diff options
Diffstat (limited to 'src/core/lib/client_config')
37 files changed, 143 insertions, 2684 deletions
diff --git a/src/core/lib/client_config/client_config.c b/src/core/lib/client_config/client_config.c index 82c8d68099..2521023364 100644 --- a/src/core/lib/client_config/client_config.c +++ b/src/core/lib/client_config/client_config.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/client_config.h b/src/core/lib/client_config/client_config.h index 404ec0d3a5..8dc2f6b299 100644 --- a/src/core/lib/client_config/client_config.h +++ b/src/core/lib/client_config/client_config.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/connector.c b/src/core/lib/client_config/connector.c index f51d862c6d..4c7b823dac 100644 --- a/src/core/lib/client_config/connector.c +++ b/src/core/lib/client_config/connector.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/connector.h b/src/core/lib/client_config/connector.h index 21b925aade..39870a261c 100644 --- a/src/core/lib/client_config/connector.h +++ b/src/core/lib/client_config/connector.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/default_initial_connect_string.c b/src/core/lib/client_config/default_initial_connect_string.c index 86eb37de77..a70da4a84a 100644 --- a/src/core/lib/client_config/default_initial_connect_string.c +++ b/src/core/lib/client_config/default_initial_connect_string.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/initial_connect_string.c b/src/core/lib/client_config/initial_connect_string.c index 95ae728316..4034ea2e87 100644 --- a/src/core/lib/client_config/initial_connect_string.c +++ b/src/core/lib/client_config/initial_connect_string.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/initial_connect_string.h b/src/core/lib/client_config/initial_connect_string.h index eec42fa240..51302768c6 100644 --- a/src/core/lib/client_config/initial_connect_string.h +++ b/src/core/lib/client_config/initial_connect_string.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/lb_policies/load_balancer_api.c b/src/core/lib/client_config/lb_policies/load_balancer_api.c deleted file mode 100644 index 4cbed200df..0000000000 --- a/src/core/lib/client_config/lb_policies/load_balancer_api.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "src/core/lib/client_config/lb_policies/load_balancer_api.h" -#include "third_party/nanopb/pb_decode.h" -#include "third_party/nanopb/pb_encode.h" - -#include <grpc/support/alloc.h> - -typedef struct decode_serverlist_arg { - int first_pass; - int i; - size_t num_servers; - grpc_grpclb_server **servers; -} decode_serverlist_arg; - -/* invoked once for every Server in ServerList */ -static bool decode_serverlist(pb_istream_t *stream, const pb_field_t *field, - void **arg) { - decode_serverlist_arg *dec_arg = *arg; - if (dec_arg->first_pass != 0) { /* first pass */ - grpc_grpclb_server server; - if (!pb_decode(stream, grpc_lb_v0_Server_fields, &server)) { - return false; - } - dec_arg->num_servers++; - } else { /* second pass */ - grpc_grpclb_server *server = gpr_malloc(sizeof(grpc_grpclb_server)); - GPR_ASSERT(dec_arg->num_servers > 0); - if (dec_arg->i == 0) { /* first iteration of second pass */ - dec_arg->servers = - gpr_malloc(sizeof(grpc_grpclb_server *) * dec_arg->num_servers); - } - if (!pb_decode(stream, grpc_lb_v0_Server_fields, server)) { - return false; - } - dec_arg->servers[dec_arg->i++] = server; - } - - return true; -} - -grpc_grpclb_request *grpc_grpclb_request_create(const char *lb_service_name) { - grpc_grpclb_request *req = gpr_malloc(sizeof(grpc_grpclb_request)); - - req->has_client_stats = 0; /* TODO(dgq): add support for stats once defined */ - req->has_initial_request = 1; - req->initial_request.has_name = 1; - strncpy(req->initial_request.name, lb_service_name, - GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH); - return req; -} - -gpr_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request) { - size_t encoded_length; - pb_ostream_t sizestream; - pb_ostream_t outputstream; - gpr_slice slice; - memset(&sizestream, 0, sizeof(pb_ostream_t)); - pb_encode(&sizestream, grpc_lb_v0_LoadBalanceRequest_fields, request); - encoded_length = sizestream.bytes_written; - - slice = gpr_slice_malloc(encoded_length); - outputstream = - pb_ostream_from_buffer(GPR_SLICE_START_PTR(slice), encoded_length); - GPR_ASSERT(pb_encode(&outputstream, grpc_lb_v0_LoadBalanceRequest_fields, - request) != 0); - return slice; -} - -void grpc_grpclb_request_destroy(grpc_grpclb_request *request) { - gpr_free(request); -} - -grpc_grpclb_response *grpc_grpclb_response_parse(gpr_slice encoded_response) { - bool status; - pb_istream_t stream = - pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_response), - GPR_SLICE_LENGTH(encoded_response)); - grpc_grpclb_response *res = gpr_malloc(sizeof(grpc_grpclb_response)); - memset(res, 0, sizeof(*res)); - status = pb_decode(&stream, grpc_lb_v0_LoadBalanceResponse_fields, res); - GPR_ASSERT(status == true); - return res; -} - -grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist( - gpr_slice encoded_response) { - grpc_grpclb_serverlist *sl = gpr_malloc(sizeof(grpc_grpclb_serverlist)); - bool status; - decode_serverlist_arg arg; - pb_istream_t stream = - pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_response), - GPR_SLICE_LENGTH(encoded_response)); - pb_istream_t stream_at_start = stream; - grpc_grpclb_response *res = gpr_malloc(sizeof(grpc_grpclb_response)); - memset(res, 0, sizeof(*res)); - memset(&arg, 0, sizeof(decode_serverlist_arg)); - - res->server_list.servers.funcs.decode = decode_serverlist; - res->server_list.servers.arg = &arg; - arg.first_pass = 1; - status = pb_decode(&stream, grpc_lb_v0_LoadBalanceResponse_fields, res); - GPR_ASSERT(status == true); - GPR_ASSERT(arg.num_servers > 0); - - arg.first_pass = 0; - status = - pb_decode(&stream_at_start, grpc_lb_v0_LoadBalanceResponse_fields, res); - GPR_ASSERT(status == true); - GPR_ASSERT(arg.servers != NULL); - - sl->num_servers = arg.num_servers; - sl->servers = arg.servers; - if (res->server_list.has_expiration_interval) { - sl->expiration_interval = res->server_list.expiration_interval; - } - grpc_grpclb_response_destroy(res); - return sl; -} - -void grpc_grpclb_destroy_serverlist(grpc_grpclb_serverlist *serverlist) { - size_t i; - for (i = 0; i < serverlist->num_servers; i++) { - gpr_free(serverlist->servers[i]); - } - gpr_free(serverlist->servers); - gpr_free(serverlist); -} - -void grpc_grpclb_response_destroy(grpc_grpclb_response *response) { - gpr_free(response); -} diff --git a/src/core/lib/client_config/lb_policies/load_balancer_api.h b/src/core/lib/client_config/lb_policies/load_balancer_api.h deleted file mode 100644 index 83299adfa9..0000000000 --- a/src/core/lib/client_config/lb_policies/load_balancer_api.h +++ /dev/null @@ -1,85 +0,0 @@ -/* - * - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H -#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H - -#include <grpc/support/slice_buffer.h> - -#include "src/core/lib/client_config/lb_policy_factory.h" -#include "src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#define GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH 128 - -typedef grpc_lb_v0_LoadBalanceRequest grpc_grpclb_request; -typedef grpc_lb_v0_LoadBalanceResponse grpc_grpclb_response; -typedef grpc_lb_v0_Server grpc_grpclb_server; -typedef grpc_lb_v0_Duration grpc_grpclb_duration; -typedef struct grpc_grpclb_serverlist { - grpc_grpclb_server **servers; - size_t num_servers; - grpc_grpclb_duration expiration_interval; -} grpc_grpclb_serverlist; - -/** Create a request for a gRPC LB service under \a lb_service_name */ -grpc_grpclb_request *grpc_grpclb_request_create(const char *lb_service_name); - -/** Protocol Buffers v3-encode \a request */ -gpr_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request); - -/** Destroy \a request */ -void grpc_grpclb_request_destroy(grpc_grpclb_request *request); - -/** Parse (ie, decode) the bytes in \a encoded_response as a \a - * grpc_grpclb_response */ -grpc_grpclb_response *grpc_grpclb_response_parse(gpr_slice encoded_response); - -/** Destroy \a serverlist */ -void grpc_grpclb_destroy_serverlist(grpc_grpclb_serverlist *serverlist); - -/** Parse the list of servers from an encoded \a grpc_grpclb_response */ -grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist( - gpr_slice encoded_response); - -/** Destroy \a response */ -void grpc_grpclb_response_destroy(grpc_grpclb_response *response); - -#ifdef __cplusplus -} -#endif - -#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H */ diff --git a/src/core/lib/client_config/lb_policies/pick_first.c b/src/core/lib/client_config/lb_policies/pick_first.c deleted file mode 100644 index 2e399b73f9..0000000000 --- a/src/core/lib/client_config/lb_policies/pick_first.c +++ /dev/null @@ -1,421 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "src/core/lib/client_config/lb_policies/pick_first.h" -#include "src/core/lib/client_config/lb_policy_factory.h" - -#include <string.h> - -#include <grpc/support/alloc.h> -#include "src/core/lib/transport/connectivity_state.h" - -typedef struct pending_pick { - struct pending_pick *next; - grpc_pollset *pollset; - grpc_connected_subchannel **target; - grpc_closure *on_complete; -} pending_pick; - -typedef struct { - /** base policy: must be first */ - grpc_lb_policy base; - /** all our subchannels */ - grpc_subchannel **subchannels; - size_t num_subchannels; - - grpc_closure connectivity_changed; - - /** the selected channel (a grpc_connected_subchannel) */ - gpr_atm selected; - - /** mutex protecting remaining members */ - gpr_mu mu; - /** have we started picking? */ - int started_picking; - /** are we shut down? */ - int shutdown; - /** which subchannel are we watching? */ - size_t checking_subchannel; - /** what is the connectivity of that channel? */ - grpc_connectivity_state checking_connectivity; - /** list of picks that are waiting on connectivity */ - pending_pick *pending_picks; - - /** our connectivity state tracker */ - grpc_connectivity_state_tracker state_tracker; -} pick_first_lb_policy; - -#define GET_SELECTED(p) \ - ((grpc_connected_subchannel *)gpr_atm_acq_load(&(p)->selected)) - -void pf_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - grpc_connected_subchannel *selected = GET_SELECTED(p); - size_t i; - GPR_ASSERT(p->pending_picks == NULL); - for (i = 0; i < p->num_subchannels; i++) { - GRPC_SUBCHANNEL_UNREF(exec_ctx, p->subchannels[i], "pick_first"); - } - if (selected != NULL) { - GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, selected, "picked_first"); - } - grpc_connectivity_state_destroy(exec_ctx, &p->state_tracker); - gpr_free(p->subchannels); - gpr_mu_destroy(&p->mu); - gpr_free(p); -} - -void pf_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - pending_pick *pp; - grpc_connected_subchannel *selected; - gpr_mu_lock(&p->mu); - selected = GET_SELECTED(p); - p->shutdown = 1; - pp = p->pending_picks; - p->pending_picks = NULL; - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_FATAL_FAILURE, "shutdown"); - /* cancel subscription */ - if (selected != NULL) { - grpc_connected_subchannel_notify_on_state_change( - exec_ctx, selected, NULL, NULL, &p->connectivity_changed); - } else { - grpc_subchannel_notify_on_state_change( - exec_ctx, p->subchannels[p->checking_subchannel], NULL, NULL, - &p->connectivity_changed); - } - gpr_mu_unlock(&p->mu); - while (pp != NULL) { - pending_pick *next = pp->next; - *pp->target = NULL; - grpc_pollset_set_del_pollset(exec_ctx, p->base.interested_parties, - pp->pollset); - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, true, NULL); - gpr_free(pp); - pp = next; - } -} - -static void pf_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, - grpc_connected_subchannel **target) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - pending_pick *pp; - gpr_mu_lock(&p->mu); - pp = p->pending_picks; - p->pending_picks = NULL; - while (pp != NULL) { - pending_pick *next = pp->next; - if (pp->target == target) { - grpc_pollset_set_del_pollset(exec_ctx, p->base.interested_parties, - pp->pollset); - *target = NULL; - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, false, NULL); - gpr_free(pp); - } else { - pp->next = p->pending_picks; - p->pending_picks = pp; - } - pp = next; - } - gpr_mu_unlock(&p->mu); -} - -static void start_picking(grpc_exec_ctx *exec_ctx, pick_first_lb_policy *p) { - p->started_picking = 1; - p->checking_subchannel = 0; - p->checking_connectivity = GRPC_CHANNEL_IDLE; - GRPC_LB_POLICY_WEAK_REF(&p->base, "pick_first_connectivity"); - grpc_subchannel_notify_on_state_change( - exec_ctx, p->subchannels[p->checking_subchannel], - p->base.interested_parties, &p->checking_connectivity, - &p->connectivity_changed); -} - -void pf_exit_idle(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - gpr_mu_lock(&p->mu); - if (!p->started_picking) { - start_picking(exec_ctx, p); - } - gpr_mu_unlock(&p->mu); -} - -int pf_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, grpc_pollset *pollset, - grpc_metadata_batch *initial_metadata, - grpc_connected_subchannel **target, grpc_closure *on_complete) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - pending_pick *pp; - - /* Check atomically for a selected channel */ - grpc_connected_subchannel *selected = GET_SELECTED(p); - if (selected != NULL) { - *target = selected; - return 1; - } - - /* No subchannel selected yet, so acquire lock and then attempt again */ - gpr_mu_lock(&p->mu); - selected = GET_SELECTED(p); - if (selected) { - gpr_mu_unlock(&p->mu); - *target = selected; - return 1; - } else { - if (!p->started_picking) { - start_picking(exec_ctx, p); - } - grpc_pollset_set_add_pollset(exec_ctx, p->base.interested_parties, pollset); - pp = gpr_malloc(sizeof(*pp)); - pp->next = p->pending_picks; - pp->pollset = pollset; - pp->target = target; - pp->on_complete = on_complete; - p->pending_picks = pp; - gpr_mu_unlock(&p->mu); - return 0; - } -} - -static void destroy_subchannels(grpc_exec_ctx *exec_ctx, void *arg, - bool iomgr_success) { - pick_first_lb_policy *p = arg; - size_t i; - size_t num_subchannels = p->num_subchannels; - grpc_subchannel **subchannels; - - gpr_mu_lock(&p->mu); - subchannels = p->subchannels; - p->num_subchannels = 0; - p->subchannels = NULL; - gpr_mu_unlock(&p->mu); - GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "destroy_subchannels"); - - for (i = 0; i < num_subchannels; i++) { - GRPC_SUBCHANNEL_UNREF(exec_ctx, subchannels[i], "pick_first"); - } - - gpr_free(subchannels); -} - -static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg, - bool iomgr_success) { - pick_first_lb_policy *p = arg; - grpc_subchannel *selected_subchannel; - pending_pick *pp; - grpc_connected_subchannel *selected; - - gpr_mu_lock(&p->mu); - - selected = GET_SELECTED(p); - - if (p->shutdown) { - gpr_mu_unlock(&p->mu); - GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "pick_first_connectivity"); - return; - } else if (selected != NULL) { - if (p->checking_connectivity == GRPC_CHANNEL_TRANSIENT_FAILURE) { - /* if the selected channel goes bad, we're done */ - p->checking_connectivity = GRPC_CHANNEL_FATAL_FAILURE; - } - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - p->checking_connectivity, "selected_changed"); - if (p->checking_connectivity != GRPC_CHANNEL_FATAL_FAILURE) { - grpc_connected_subchannel_notify_on_state_change( - exec_ctx, selected, p->base.interested_parties, - &p->checking_connectivity, &p->connectivity_changed); - } else { - GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "pick_first_connectivity"); - } - } else { - loop: - switch (p->checking_connectivity) { - case GRPC_CHANNEL_READY: - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_READY, "connecting_ready"); - selected_subchannel = p->subchannels[p->checking_subchannel]; - selected = - grpc_subchannel_get_connected_subchannel(selected_subchannel); - GPR_ASSERT(selected != NULL); - GRPC_CONNECTED_SUBCHANNEL_REF(selected, "picked_first"); - /* drop the pick list: we are connected now */ - GRPC_LB_POLICY_WEAK_REF(&p->base, "destroy_subchannels"); - gpr_atm_rel_store(&p->selected, (gpr_atm)selected); - grpc_exec_ctx_enqueue( - exec_ctx, grpc_closure_create(destroy_subchannels, p), true, NULL); - /* update any calls that were waiting for a pick */ - while ((pp = p->pending_picks)) { - p->pending_picks = pp->next; - *pp->target = selected; - grpc_pollset_set_del_pollset(exec_ctx, p->base.interested_parties, - pp->pollset); - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, true, NULL); - gpr_free(pp); - } - grpc_connected_subchannel_notify_on_state_change( - exec_ctx, selected, p->base.interested_parties, - &p->checking_connectivity, &p->connectivity_changed); - break; - case GRPC_CHANNEL_TRANSIENT_FAILURE: - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_TRANSIENT_FAILURE, - "connecting_transient_failure"); - p->checking_subchannel = - (p->checking_subchannel + 1) % p->num_subchannels; - p->checking_connectivity = grpc_subchannel_check_connectivity( - p->subchannels[p->checking_subchannel]); - if (p->checking_connectivity == GRPC_CHANNEL_TRANSIENT_FAILURE) { - grpc_subchannel_notify_on_state_change( - exec_ctx, p->subchannels[p->checking_subchannel], - p->base.interested_parties, &p->checking_connectivity, - &p->connectivity_changed); - } else { - goto loop; - } - break; - case GRPC_CHANNEL_CONNECTING: - case GRPC_CHANNEL_IDLE: - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_CONNECTING, - "connecting_changed"); - grpc_subchannel_notify_on_state_change( - exec_ctx, p->subchannels[p->checking_subchannel], - p->base.interested_parties, &p->checking_connectivity, - &p->connectivity_changed); - break; - case GRPC_CHANNEL_FATAL_FAILURE: - p->num_subchannels--; - GPR_SWAP(grpc_subchannel *, p->subchannels[p->checking_subchannel], - p->subchannels[p->num_subchannels]); - GRPC_SUBCHANNEL_UNREF(exec_ctx, p->subchannels[p->num_subchannels], - "pick_first"); - if (p->num_subchannels == 0) { - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_FATAL_FAILURE, - "no_more_channels"); - while ((pp = p->pending_picks)) { - p->pending_picks = pp->next; - *pp->target = NULL; - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, true, NULL); - gpr_free(pp); - } - GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, - "pick_first_connectivity"); - } else { - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_TRANSIENT_FAILURE, - "subchannel_failed"); - p->checking_subchannel %= p->num_subchannels; - p->checking_connectivity = grpc_subchannel_check_connectivity( - p->subchannels[p->checking_subchannel]); - goto loop; - } - } - } - - gpr_mu_unlock(&p->mu); -} - -static grpc_connectivity_state pf_check_connectivity(grpc_exec_ctx *exec_ctx, - grpc_lb_policy *pol) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - grpc_connectivity_state st; - gpr_mu_lock(&p->mu); - st = grpc_connectivity_state_check(&p->state_tracker); - gpr_mu_unlock(&p->mu); - return st; -} - -void pf_notify_on_state_change(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, - grpc_connectivity_state *current, - grpc_closure *notify) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - gpr_mu_lock(&p->mu); - grpc_connectivity_state_notify_on_state_change(exec_ctx, &p->state_tracker, - current, notify); - gpr_mu_unlock(&p->mu); -} - -void pf_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, - grpc_closure *closure) { - pick_first_lb_policy *p = (pick_first_lb_policy *)pol; - grpc_connected_subchannel *selected = GET_SELECTED(p); - if (selected) { - grpc_connected_subchannel_ping(exec_ctx, selected, closure); - } else { - grpc_exec_ctx_enqueue(exec_ctx, closure, false, NULL); - } -} - -static const grpc_lb_policy_vtable pick_first_lb_policy_vtable = { - pf_destroy, - pf_shutdown, - pf_pick, - pf_cancel_pick, - pf_ping_one, - pf_exit_idle, - pf_check_connectivity, - pf_notify_on_state_change}; - -static void pick_first_factory_ref(grpc_lb_policy_factory *factory) {} - -static void pick_first_factory_unref(grpc_lb_policy_factory *factory) {} - -static grpc_lb_policy *create_pick_first(grpc_lb_policy_factory *factory, - grpc_lb_policy_args *args) { - if (args->num_subchannels == 0) return NULL; - pick_first_lb_policy *p = gpr_malloc(sizeof(*p)); - memset(p, 0, sizeof(*p)); - grpc_lb_policy_init(&p->base, &pick_first_lb_policy_vtable); - p->subchannels = - gpr_malloc(sizeof(grpc_subchannel *) * args->num_subchannels); - p->num_subchannels = args->num_subchannels; - grpc_connectivity_state_init(&p->state_tracker, GRPC_CHANNEL_IDLE, - "pick_first"); - memcpy(p->subchannels, args->subchannels, - sizeof(grpc_subchannel *) * args->num_subchannels); - grpc_closure_init(&p->connectivity_changed, pf_connectivity_changed, p); - gpr_mu_init(&p->mu); - return &p->base; -} - -static const grpc_lb_policy_factory_vtable pick_first_factory_vtable = { - pick_first_factory_ref, pick_first_factory_unref, create_pick_first, - "pick_first"}; - -static grpc_lb_policy_factory pick_first_lb_policy_factory = { - &pick_first_factory_vtable}; - -grpc_lb_policy_factory *grpc_pick_first_lb_factory_create() { - return &pick_first_lb_policy_factory; -} diff --git a/src/core/lib/client_config/lb_policies/pick_first.h b/src/core/lib/client_config/lb_policies/pick_first.h deleted file mode 100644 index dba86ea7ad..0000000000 --- a/src/core/lib/client_config/lb_policies/pick_first.h +++ /dev/null @@ -1,43 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H -#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H - -#include "src/core/lib/client_config/lb_policy_factory.h" - -/** Returns a load balancing factory for the pick first policy, which picks up - * the first subchannel from \a subchannels to succesfully connect */ -grpc_lb_policy_factory *grpc_pick_first_lb_factory_create(); - -#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H */ diff --git a/src/core/lib/client_config/lb_policies/round_robin.c b/src/core/lib/client_config/lb_policies/round_robin.c deleted file mode 100644 index c904c5f921..0000000000 --- a/src/core/lib/client_config/lb_policies/round_robin.c +++ /dev/null @@ -1,542 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "src/core/lib/client_config/lb_policies/round_robin.h" - -#include <string.h> - -#include <grpc/support/alloc.h> -#include "src/core/lib/transport/connectivity_state.h" - -typedef struct round_robin_lb_policy round_robin_lb_policy; - -int grpc_lb_round_robin_trace = 0; - -/** List of entities waiting for a pick. - * - * Once a pick is available, \a target is updated and \a on_complete called. */ -typedef struct pending_pick { - struct pending_pick *next; - grpc_pollset *pollset; - grpc_connected_subchannel **target; - grpc_closure *on_complete; -} pending_pick; - -/** List of subchannels in a connectivity READY state */ -typedef struct ready_list { - grpc_subchannel *subchannel; - struct ready_list *next; - struct ready_list *prev; -} ready_list; - -typedef struct { - /** index within policy->subchannels */ - size_t index; - /** backpointer to owning policy */ - round_robin_lb_policy *policy; - /** subchannel itself */ - grpc_subchannel *subchannel; - /** notification that connectivity has changed on subchannel */ - grpc_closure connectivity_changed_closure; - /** this subchannels current position in subchannel->ready_list */ - ready_list *ready_list_node; - /** last observed connectivity */ - grpc_connectivity_state connectivity_state; -} subchannel_data; - -struct round_robin_lb_policy { - /** base policy: must be first */ - grpc_lb_policy base; - - /** all our subchannels */ - size_t num_subchannels; - subchannel_data **subchannels; - - /** mutex protecting remaining members */ - gpr_mu mu; - /** have we started picking? */ - int started_picking; - /** are we shutting down? */ - int shutdown; - /** List of picks that are waiting on connectivity */ - pending_pick *pending_picks; - - /** our connectivity state tracker */ - grpc_connectivity_state_tracker state_tracker; - - /** (Dummy) root of the doubly linked list containing READY subchannels */ - ready_list ready_list; - /** Last pick from the ready list. */ - ready_list *ready_list_last_pick; -}; - -/** Returns the next subchannel from the connected list or NULL if the list is - * empty. - * - * Note that this function does *not* advance p->ready_list_last_pick. Use \a - * advance_last_picked_locked() for that. */ -static ready_list *peek_next_connected_locked(const round_robin_lb_policy *p) { - ready_list *selected; - selected = p->ready_list_last_pick->next; - - while (selected != NULL) { - if (selected == &p->ready_list) { - GPR_ASSERT(selected->subchannel == NULL); - /* skip dummy root */ - selected = selected->next; - } else { - GPR_ASSERT(selected->subchannel != NULL); - return selected; - } - } - return NULL; -} - -/** Advance the \a ready_list picking head. */ -static void advance_last_picked_locked(round_robin_lb_policy *p) { - if (p->ready_list_last_pick->next != NULL) { /* non-empty list */ - p->ready_list_last_pick = p->ready_list_last_pick->next; - if (p->ready_list_last_pick == &p->ready_list) { - /* skip dummy root */ - p->ready_list_last_pick = p->ready_list_last_pick->next; - } - } else { /* should be an empty list */ - GPR_ASSERT(p->ready_list_last_pick == &p->ready_list); - } - - if (grpc_lb_round_robin_trace) { - gpr_log(GPR_DEBUG, "[READYLIST] ADVANCED LAST PICK. NOW AT NODE %p (SC %p)", - p->ready_list_last_pick, p->ready_list_last_pick->subchannel); - } -} - -/** Prepends (relative to the root at p->ready_list) the connected subchannel \a - * csc to the list of ready subchannels. */ -static ready_list *add_connected_sc_locked(round_robin_lb_policy *p, - grpc_subchannel *sc) { - ready_list *new_elem = gpr_malloc(sizeof(ready_list)); - new_elem->subchannel = sc; - if (p->ready_list.prev == NULL) { - /* first element */ - new_elem->next = &p->ready_list; - new_elem->prev = &p->ready_list; - p->ready_list.next = new_elem; - p->ready_list.prev = new_elem; - } else { - new_elem->next = &p->ready_list; - new_elem->prev = p->ready_list.prev; - p->ready_list.prev->next = new_elem; - p->ready_list.prev = new_elem; - } - if (grpc_lb_round_robin_trace) { - gpr_log(GPR_DEBUG, "[READYLIST] ADDING NODE %p (SC %p)", new_elem, sc); - } - return new_elem; -} - -/** Removes \a node from the list of connected subchannels */ -static void remove_disconnected_sc_locked(round_robin_lb_policy *p, - ready_list *node) { - if (node == NULL) { - return; - } - if (node == p->ready_list_last_pick) { - /* If removing the lastly picked node, reset the last pick pointer to the - * dummy root of the list */ - p->ready_list_last_pick = &p->ready_list; - } - - /* removing last item */ - if (node->next == &p->ready_list && node->prev == &p->ready_list) { - GPR_ASSERT(p->ready_list.next == node); - GPR_ASSERT(p->ready_list.prev == node); - p->ready_list.next = NULL; - p->ready_list.prev = NULL; - } else { - node->prev->next = node->next; - node->next->prev = node->prev; - } - - if (grpc_lb_round_robin_trace) { - gpr_log(GPR_DEBUG, "[READYLIST] REMOVED NODE %p (SC %p)", node, - node->subchannel); - } - - node->next = NULL; - node->prev = NULL; - node->subchannel = NULL; - - gpr_free(node); -} - -void rr_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - size_t i; - ready_list *elem; - for (i = 0; i < p->num_subchannels; i++) { - subchannel_data *sd = p->subchannels[i]; - GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "round_robin"); - gpr_free(sd); - } - - grpc_connectivity_state_destroy(exec_ctx, &p->state_tracker); - gpr_free(p->subchannels); - gpr_mu_destroy(&p->mu); - - elem = p->ready_list.next; - while (elem != NULL && elem != &p->ready_list) { - ready_list *tmp; - tmp = elem->next; - elem->next = NULL; - elem->prev = NULL; - elem->subchannel = NULL; - gpr_free(elem); - elem = tmp; - } - gpr_free(p); -} - -void rr_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - pending_pick *pp; - size_t i; - - gpr_mu_lock(&p->mu); - - p->shutdown = 1; - while ((pp = p->pending_picks)) { - p->pending_picks = pp->next; - *pp->target = NULL; - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, false, NULL); - gpr_free(pp); - } - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_FATAL_FAILURE, "shutdown"); - for (i = 0; i < p->num_subchannels; i++) { - subchannel_data *sd = p->subchannels[i]; - grpc_subchannel_notify_on_state_change(exec_ctx, sd->subchannel, NULL, NULL, - &sd->connectivity_changed_closure); - } - gpr_mu_unlock(&p->mu); -} - -static void rr_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, - grpc_connected_subchannel **target) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - pending_pick *pp; - gpr_mu_lock(&p->mu); - pp = p->pending_picks; - p->pending_picks = NULL; - while (pp != NULL) { - pending_pick *next = pp->next; - if (pp->target == target) { - grpc_pollset_set_del_pollset(exec_ctx, p->base.interested_parties, - pp->pollset); - *target = NULL; - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, false, NULL); - gpr_free(pp); - } else { - pp->next = p->pending_picks; - p->pending_picks = pp; - } - pp = next; - } - gpr_mu_unlock(&p->mu); -} - -static void start_picking(grpc_exec_ctx *exec_ctx, round_robin_lb_policy *p) { - size_t i; - p->started_picking = 1; - - gpr_log(GPR_DEBUG, "LB_POLICY: p=%p num_subchannels=%d", p, - p->num_subchannels); - - for (i = 0; i < p->num_subchannels; i++) { - subchannel_data *sd = p->subchannels[i]; - sd->connectivity_state = GRPC_CHANNEL_IDLE; - grpc_subchannel_notify_on_state_change( - exec_ctx, sd->subchannel, p->base.interested_parties, - &sd->connectivity_state, &sd->connectivity_changed_closure); - GRPC_LB_POLICY_WEAK_REF(&p->base, "round_robin_connectivity"); - } -} - -void rr_exit_idle(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - gpr_mu_lock(&p->mu); - if (!p->started_picking) { - start_picking(exec_ctx, p); - } - gpr_mu_unlock(&p->mu); -} - -int rr_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, grpc_pollset *pollset, - grpc_metadata_batch *initial_metadata, - grpc_connected_subchannel **target, grpc_closure *on_complete) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - pending_pick *pp; - ready_list *selected; - gpr_mu_lock(&p->mu); - if ((selected = peek_next_connected_locked(p))) { - gpr_mu_unlock(&p->mu); - *target = grpc_subchannel_get_connected_subchannel(selected->subchannel); - if (grpc_lb_round_robin_trace) { - gpr_log(GPR_DEBUG, - "[RR PICK] TARGET <-- CONNECTED SUBCHANNEL %p (NODE %p)", - selected->subchannel, selected); - } - /* only advance the last picked pointer if the selection was used */ - advance_last_picked_locked(p); - return 1; - } else { - if (!p->started_picking) { - start_picking(exec_ctx, p); - } - grpc_pollset_set_add_pollset(exec_ctx, p->base.interested_parties, pollset); - pp = gpr_malloc(sizeof(*pp)); - pp->next = p->pending_picks; - pp->pollset = pollset; - pp->target = target; - pp->on_complete = on_complete; - p->pending_picks = pp; - gpr_mu_unlock(&p->mu); - return 0; - } -} - -static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg, - bool iomgr_success) { - subchannel_data *sd = arg; - round_robin_lb_policy *p = sd->policy; - pending_pick *pp; - ready_list *selected; - - int unref = 0; - - gpr_mu_lock(&p->mu); - - if (p->shutdown) { - unref = 1; - } else { - switch (sd->connectivity_state) { - case GRPC_CHANNEL_READY: - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_READY, "connecting_ready"); - /* add the newly connected subchannel to the list of connected ones. - * Note that it goes to the "end of the line". */ - sd->ready_list_node = add_connected_sc_locked(p, sd->subchannel); - /* at this point we know there's at least one suitable subchannel. Go - * ahead and pick one and notify the pending suitors in - * p->pending_picks. This preemtively replicates rr_pick()'s actions. */ - selected = peek_next_connected_locked(p); - if (p->pending_picks != NULL) { - /* if the selected subchannel is going to be used for the pending - * picks, update the last picked pointer */ - advance_last_picked_locked(p); - } - while ((pp = p->pending_picks)) { - p->pending_picks = pp->next; - *pp->target = - grpc_subchannel_get_connected_subchannel(selected->subchannel); - if (grpc_lb_round_robin_trace) { - gpr_log(GPR_DEBUG, - "[RR CONN CHANGED] TARGET <-- SUBCHANNEL %p (NODE %p)", - selected->subchannel, selected); - } - grpc_pollset_set_del_pollset(exec_ctx, p->base.interested_parties, - pp->pollset); - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, true, NULL); - gpr_free(pp); - } - grpc_subchannel_notify_on_state_change( - exec_ctx, sd->subchannel, p->base.interested_parties, - &sd->connectivity_state, &sd->connectivity_changed_closure); - break; - case GRPC_CHANNEL_CONNECTING: - case GRPC_CHANNEL_IDLE: - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - sd->connectivity_state, - "connecting_changed"); - grpc_subchannel_notify_on_state_change( - exec_ctx, sd->subchannel, p->base.interested_parties, - &sd->connectivity_state, &sd->connectivity_changed_closure); - break; - case GRPC_CHANNEL_TRANSIENT_FAILURE: - /* renew state notification */ - grpc_subchannel_notify_on_state_change( - exec_ctx, sd->subchannel, p->base.interested_parties, - &sd->connectivity_state, &sd->connectivity_changed_closure); - - /* remove from ready list if still present */ - if (sd->ready_list_node != NULL) { - remove_disconnected_sc_locked(p, sd->ready_list_node); - sd->ready_list_node = NULL; - } - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_TRANSIENT_FAILURE, - "connecting_transient_failure"); - break; - case GRPC_CHANNEL_FATAL_FAILURE: - if (sd->ready_list_node != NULL) { - remove_disconnected_sc_locked(p, sd->ready_list_node); - sd->ready_list_node = NULL; - } - - p->num_subchannels--; - GPR_SWAP(subchannel_data *, p->subchannels[sd->index], - p->subchannels[p->num_subchannels]); - GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "round_robin"); - p->subchannels[sd->index]->index = sd->index; - gpr_free(sd); - - unref = 1; - if (p->num_subchannels == 0) { - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_FATAL_FAILURE, - "no_more_channels"); - while ((pp = p->pending_picks)) { - p->pending_picks = pp->next; - *pp->target = NULL; - grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, true, NULL); - gpr_free(pp); - } - } else { - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_TRANSIENT_FAILURE, - "subchannel_failed"); - } - } /* switch */ - } /* !unref */ - - gpr_mu_unlock(&p->mu); - - if (unref) { - GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "round_robin_connectivity"); - } -} - -static grpc_connectivity_state rr_check_connectivity(grpc_exec_ctx *exec_ctx, - grpc_lb_policy *pol) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - grpc_connectivity_state st; - gpr_mu_lock(&p->mu); - st = grpc_connectivity_state_check(&p->state_tracker); - gpr_mu_unlock(&p->mu); - return st; -} - -static void rr_notify_on_state_change(grpc_exec_ctx *exec_ctx, - grpc_lb_policy *pol, - grpc_connectivity_state *current, - grpc_closure *notify) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - gpr_mu_lock(&p->mu); - grpc_connectivity_state_notify_on_state_change(exec_ctx, &p->state_tracker, - current, notify); - gpr_mu_unlock(&p->mu); -} - -static void rr_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, - grpc_closure *closure) { - round_robin_lb_policy *p = (round_robin_lb_policy *)pol; - ready_list *selected; - grpc_connected_subchannel *target; - gpr_mu_lock(&p->mu); - if ((selected = peek_next_connected_locked(p))) { - gpr_mu_unlock(&p->mu); - target = grpc_subchannel_get_connected_subchannel(selected->subchannel); - grpc_connected_subchannel_ping(exec_ctx, target, closure); - } else { - gpr_mu_unlock(&p->mu); - grpc_exec_ctx_enqueue(exec_ctx, closure, false, NULL); - } -} - -static const grpc_lb_policy_vtable round_robin_lb_policy_vtable = { - rr_destroy, - rr_shutdown, - rr_pick, - rr_cancel_pick, - rr_ping_one, - rr_exit_idle, - rr_check_connectivity, - rr_notify_on_state_change}; - -static void round_robin_factory_ref(grpc_lb_policy_factory *factory) {} - -static void round_robin_factory_unref(grpc_lb_policy_factory *factory) {} - -static grpc_lb_policy *create_round_robin(grpc_lb_policy_factory *factory, - grpc_lb_policy_args *args) { - size_t i; - round_robin_lb_policy *p = gpr_malloc(sizeof(*p)); - GPR_ASSERT(args->num_subchannels > 0); - memset(p, 0, sizeof(*p)); - grpc_lb_policy_init(&p->base, &round_robin_lb_policy_vtable); - p->num_subchannels = args->num_subchannels; - p->subchannels = gpr_malloc(sizeof(*p->subchannels) * p->num_subchannels); - memset(p->subchannels, 0, sizeof(*p->subchannels) * p->num_subchannels); - grpc_connectivity_state_init(&p->state_tracker, GRPC_CHANNEL_IDLE, - "round_robin"); - - gpr_mu_init(&p->mu); - for (i = 0; i < args->num_subchannels; i++) { - subchannel_data *sd = gpr_malloc(sizeof(*sd)); - memset(sd, 0, sizeof(*sd)); - p->subchannels[i] = sd; - sd->policy = p; - sd->index = i; - sd->subchannel = args->subchannels[i]; - grpc_closure_init(&sd->connectivity_changed_closure, - rr_connectivity_changed, sd); - } - - /* The (dummy node) root of the ready list */ - p->ready_list.subchannel = NULL; - p->ready_list.prev = NULL; - p->ready_list.next = NULL; - p->ready_list_last_pick = &p->ready_list; - - return &p->base; -} - -static const grpc_lb_policy_factory_vtable round_robin_factory_vtable = { - round_robin_factory_ref, round_robin_factory_unref, create_round_robin, - "round_robin"}; - -static grpc_lb_policy_factory round_robin_lb_policy_factory = { - &round_robin_factory_vtable}; - -grpc_lb_policy_factory *grpc_round_robin_lb_factory_create() { - return &round_robin_lb_policy_factory; -} diff --git a/src/core/lib/client_config/lb_policies/round_robin.h b/src/core/lib/client_config/lb_policies/round_robin.h deleted file mode 100644 index 52db1caa0c..0000000000 --- a/src/core/lib/client_config/lb_policies/round_robin.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H -#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H - -#include "src/core/lib/client_config/lb_policy.h" - -extern int grpc_lb_round_robin_trace; - -#include "src/core/lib/client_config/lb_policy_factory.h" - -/** Returns a load balancing factory for the round robin policy */ -grpc_lb_policy_factory *grpc_round_robin_lb_factory_create(); - -#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H */ diff --git a/src/core/lib/client_config/lb_policy.c b/src/core/lib/client_config/lb_policy.c index ee20ccd76a..3d23669ec2 100644 --- a/src/core/lib/client_config/lb_policy.c +++ b/src/core/lib/client_config/lb_policy.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/lb_policy.h b/src/core/lib/client_config/lb_policy.h index 58a0a04d85..a63e8e68df 100644 --- a/src/core/lib/client_config/lb_policy.h +++ b/src/core/lib/client_config/lb_policy.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/lb_policy_factory.c b/src/core/lib/client_config/lb_policy_factory.c index 2ca6f42f89..92e1f5f08b 100644 --- a/src/core/lib/client_config/lb_policy_factory.c +++ b/src/core/lib/client_config/lb_policy_factory.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -42,7 +42,8 @@ void grpc_lb_policy_factory_unref(grpc_lb_policy_factory* factory) { } grpc_lb_policy* grpc_lb_policy_factory_create_lb_policy( - grpc_lb_policy_factory* factory, grpc_lb_policy_args* args) { + grpc_exec_ctx* exec_ctx, grpc_lb_policy_factory* factory, + grpc_lb_policy_args* args) { if (factory == NULL) return NULL; - return factory->vtable->create_lb_policy(factory, args); + return factory->vtable->create_lb_policy(exec_ctx, factory, args); } diff --git a/src/core/lib/client_config/lb_policy_factory.h b/src/core/lib/client_config/lb_policy_factory.h index 36eaf178d9..6f21912821 100644 --- a/src/core/lib/client_config/lb_policy_factory.h +++ b/src/core/lib/client_config/lb_policy_factory.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -35,7 +35,10 @@ #define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H #include "src/core/lib/client_config/lb_policy.h" -#include "src/core/lib/client_config/subchannel.h" +#include "src/core/lib/client_config/subchannel_factory.h" +#include "src/core/lib/iomgr/resolve_address.h" + +#include "src/core/lib/iomgr/exec_ctx.h" typedef struct grpc_lb_policy_factory grpc_lb_policy_factory; typedef struct grpc_lb_policy_factory_vtable grpc_lb_policy_factory_vtable; @@ -47,8 +50,8 @@ struct grpc_lb_policy_factory { }; typedef struct grpc_lb_policy_args { - grpc_subchannel **subchannels; - size_t num_subchannels; + grpc_resolved_addresses *addresses; + grpc_subchannel_factory *subchannel_factory; } grpc_lb_policy_args; struct grpc_lb_policy_factory_vtable { @@ -56,7 +59,8 @@ struct grpc_lb_policy_factory_vtable { void (*unref)(grpc_lb_policy_factory *factory); /** Implementation of grpc_lb_policy_factory_create_lb_policy */ - grpc_lb_policy *(*create_lb_policy)(grpc_lb_policy_factory *factory, + grpc_lb_policy *(*create_lb_policy)(grpc_exec_ctx *exec_ctx, + grpc_lb_policy_factory *factory, grpc_lb_policy_args *args); /** Name for the LB policy this factory implements */ @@ -68,6 +72,7 @@ void grpc_lb_policy_factory_unref(grpc_lb_policy_factory *factory); /** Create a lb_policy instance. */ grpc_lb_policy *grpc_lb_policy_factory_create_lb_policy( - grpc_lb_policy_factory *factory, grpc_lb_policy_args *args); + grpc_exec_ctx *exec_ctx, grpc_lb_policy_factory *factory, + grpc_lb_policy_args *args); #endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H */ diff --git a/src/core/lib/client_config/lb_policy_registry.c b/src/core/lib/client_config/lb_policy_registry.c index 13acfe78cd..af396362a1 100644 --- a/src/core/lib/client_config/lb_policy_registry.c +++ b/src/core/lib/client_config/lb_policy_registry.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -40,12 +40,7 @@ static grpc_lb_policy_factory *g_all_of_the_lb_policies[MAX_POLICIES]; static int g_number_of_lb_policies = 0; -static grpc_lb_policy_factory *g_default_lb_policy_factory; - -void grpc_lb_policy_registry_init(grpc_lb_policy_factory *default_factory) { - g_number_of_lb_policies = 0; - g_default_lb_policy_factory = default_factory; -} +void grpc_lb_policy_registry_init(void) { g_number_of_lb_policies = 0; } void grpc_lb_policy_registry_shutdown(void) { int i; @@ -79,10 +74,10 @@ static grpc_lb_policy_factory *lookup_factory(const char *name) { return NULL; } -grpc_lb_policy *grpc_lb_policy_create(const char *name, +grpc_lb_policy *grpc_lb_policy_create(grpc_exec_ctx *exec_ctx, const char *name, grpc_lb_policy_args *args) { grpc_lb_policy_factory *factory = lookup_factory(name); grpc_lb_policy *lb_policy = - grpc_lb_policy_factory_create_lb_policy(factory, args); + grpc_lb_policy_factory_create_lb_policy(exec_ctx, factory, args); return lb_policy; } diff --git a/src/core/lib/client_config/lb_policy_registry.h b/src/core/lib/client_config/lb_policy_registry.h index c251fd9f08..4b8495d8a1 100644 --- a/src/core/lib/client_config/lb_policy_registry.h +++ b/src/core/lib/client_config/lb_policy_registry.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -35,10 +35,11 @@ #define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_REGISTRY_H #include "src/core/lib/client_config/lb_policy_factory.h" +#include "src/core/lib/iomgr/exec_ctx.h" /** Initialize the registry and set \a default_factory as the factory to be * returned when no name is provided in a lookup */ -void grpc_lb_policy_registry_init(grpc_lb_policy_factory *default_factory); +void grpc_lb_policy_registry_init(void); void grpc_lb_policy_registry_shutdown(void); /** Register a LB policy factory. */ @@ -48,7 +49,7 @@ void grpc_register_lb_policy(grpc_lb_policy_factory *factory); * * If \a name is NULL, the default factory from \a grpc_lb_policy_registry_init * will be returned. */ -grpc_lb_policy *grpc_lb_policy_create(const char *name, +grpc_lb_policy *grpc_lb_policy_create(grpc_exec_ctx *exec_ctx, const char *name, grpc_lb_policy_args *args); #endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_REGISTRY_H */ diff --git a/src/core/lib/client_config/resolver.c b/src/core/lib/client_config/resolver.c index 32f0643adb..b9eef5575f 100644 --- a/src/core/lib/client_config/resolver.c +++ b/src/core/lib/client_config/resolver.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/resolver.h b/src/core/lib/client_config/resolver.h index 1ee879293a..cf0bb2bc7a 100644 --- a/src/core/lib/client_config/resolver.h +++ b/src/core/lib/client_config/resolver.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/resolver_factory.c b/src/core/lib/client_config/resolver_factory.c index 0f76c664fa..001fa28536 100644 --- a/src/core/lib/client_config/resolver_factory.c +++ b/src/core/lib/client_config/resolver_factory.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/resolver_factory.h b/src/core/lib/client_config/resolver_factory.h index 7765c3c844..a5bca06475 100644 --- a/src/core/lib/client_config/resolver_factory.h +++ b/src/core/lib/client_config/resolver_factory.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/resolver_registry.c b/src/core/lib/client_config/resolver_registry.c index 29bd00c284..5f3db273b5 100644 --- a/src/core/lib/client_config/resolver_registry.c +++ b/src/core/lib/client_config/resolver_registry.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -70,14 +70,11 @@ void grpc_register_resolver_type(grpc_resolver_factory *factory) { g_all_of_the_resolvers[g_number_of_resolvers++] = factory; } -static grpc_resolver_factory *lookup_factory(grpc_uri *uri) { +static grpc_resolver_factory *lookup_factory(const char *name) { int i; - /* handling NULL uri's here simplifies grpc_resolver_create */ - if (!uri) return NULL; - for (i = 0; i < g_number_of_resolvers; i++) { - if (0 == strcmp(uri->scheme, g_all_of_the_resolvers[i]->vtable->scheme)) { + if (0 == strcmp(name, g_all_of_the_resolvers[i]->vtable->scheme)) { return g_all_of_the_resolvers[i]; } } @@ -85,6 +82,17 @@ static grpc_resolver_factory *lookup_factory(grpc_uri *uri) { return NULL; } +grpc_resolver_factory *grpc_resolver_factory_lookup(const char *name) { + grpc_resolver_factory *f = lookup_factory(name); + if (f) grpc_resolver_factory_ref(f); + return f; +} + +static grpc_resolver_factory *lookup_factory_by_uri(grpc_uri *uri) { + if (!uri) return NULL; + return lookup_factory(uri->scheme); +} + static grpc_resolver_factory *resolve_factory(const char *target, grpc_uri **uri) { char *tmp; @@ -92,13 +100,13 @@ static grpc_resolver_factory *resolve_factory(const char *target, GPR_ASSERT(uri != NULL); *uri = grpc_uri_parse(target, 1); - factory = lookup_factory(*uri); + factory = lookup_factory_by_uri(*uri); if (factory == NULL) { if (g_default_resolver_prefix != NULL) { grpc_uri_destroy(*uri); gpr_asprintf(&tmp, "%s%s", g_default_resolver_prefix, target); *uri = grpc_uri_parse(tmp, 1); - factory = lookup_factory(*uri); + factory = lookup_factory_by_uri(*uri); if (factory == NULL) { grpc_uri_destroy(grpc_uri_parse(target, 0)); grpc_uri_destroy(grpc_uri_parse(tmp, 0)); diff --git a/src/core/lib/client_config/resolver_registry.h b/src/core/lib/client_config/resolver_registry.h index 22289ca6bd..36c4f2fe03 100644 --- a/src/core/lib/client_config/resolver_registry.h +++ b/src/core/lib/client_config/resolver_registry.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -58,6 +58,10 @@ void grpc_register_resolver_type(grpc_resolver_factory *factory); grpc_resolver *grpc_resolver_create( const char *target, grpc_subchannel_factory *subchannel_factory); +/** Find a resolver factory given a name and return an (owned-by-the-caller) + * reference to it */ +grpc_resolver_factory *grpc_resolver_factory_lookup(const char *name); + /** Given a target, return a (freshly allocated with gpr_malloc) string representing the default authority to pass from a client. */ char *grpc_get_default_authority(const char *target); diff --git a/src/core/lib/client_config/resolvers/dns_resolver.c b/src/core/lib/client_config/resolvers/dns_resolver.c deleted file mode 100644 index ab445730ad..0000000000 --- a/src/core/lib/client_config/resolvers/dns_resolver.c +++ /dev/null @@ -1,309 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "src/core/lib/client_config/resolvers/dns_resolver.h" - -#include <string.h> - -#include <grpc/support/alloc.h> -#include <grpc/support/host_port.h> -#include <grpc/support/string_util.h> - -#include "src/core/lib/client_config/lb_policy_registry.h" -#include "src/core/lib/iomgr/resolve_address.h" -#include "src/core/lib/iomgr/timer.h" -#include "src/core/lib/support/backoff.h" -#include "src/core/lib/support/string.h" - -#define BACKOFF_MULTIPLIER 1.6 -#define BACKOFF_JITTER 0.2 -#define BACKOFF_MIN_SECONDS 1 -#define BACKOFF_MAX_SECONDS 120 - -typedef struct { - /** base class: must be first */ - grpc_resolver base; - /** refcount */ - gpr_refcount refs; - /** name to resolve */ - char *name; - /** default port to use */ - char *default_port; - /** subchannel factory */ - grpc_subchannel_factory *subchannel_factory; - /** load balancing policy name */ - char *lb_policy_name; - - /** mutex guarding the rest of the state */ - gpr_mu mu; - /** are we currently resolving? */ - int resolving; - /** which version of resolved_config have we published? */ - int published_version; - /** which version of resolved_config is current? */ - int resolved_version; - /** pending next completion, or NULL */ - grpc_closure *next_completion; - /** target config address for next completion */ - grpc_client_config **target_config; - /** current (fully resolved) config */ - grpc_client_config *resolved_config; - /** retry timer */ - bool have_retry_timer; - grpc_timer retry_timer; - /** retry backoff state */ - gpr_backoff backoff_state; -} dns_resolver; - -static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *r); - -static void dns_start_resolving_locked(dns_resolver *r); -static void dns_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx, - dns_resolver *r); - -static void dns_shutdown(grpc_exec_ctx *exec_ctx, grpc_resolver *r); -static void dns_channel_saw_error(grpc_exec_ctx *exec_ctx, grpc_resolver *r); -static void dns_next(grpc_exec_ctx *exec_ctx, grpc_resolver *r, - grpc_client_config **target_config, - grpc_closure *on_complete); - -static const grpc_resolver_vtable dns_resolver_vtable = { - dns_destroy, dns_shutdown, dns_channel_saw_error, dns_next}; - -static void dns_shutdown(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver) { - dns_resolver *r = (dns_resolver *)resolver; - gpr_mu_lock(&r->mu); - if (r->have_retry_timer) { - grpc_timer_cancel(exec_ctx, &r->retry_timer); - } - if (r->next_completion != NULL) { - *r->target_config = NULL; - grpc_exec_ctx_enqueue(exec_ctx, r->next_completion, true, NULL); - r->next_completion = NULL; - } - gpr_mu_unlock(&r->mu); -} - -static void dns_channel_saw_error(grpc_exec_ctx *exec_ctx, - grpc_resolver *resolver) { - dns_resolver *r = (dns_resolver *)resolver; - gpr_mu_lock(&r->mu); - if (!r->resolving) { - gpr_backoff_reset(&r->backoff_state); - dns_start_resolving_locked(r); - } - gpr_mu_unlock(&r->mu); -} - -static void dns_next(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver, - grpc_client_config **target_config, - grpc_closure *on_complete) { - dns_resolver *r = (dns_resolver *)resolver; - gpr_mu_lock(&r->mu); - GPR_ASSERT(!r->next_completion); - r->next_completion = on_complete; - r->target_config = target_config; - if (r->resolved_version == 0 && !r->resolving) { - gpr_backoff_reset(&r->backoff_state); - dns_start_resolving_locked(r); - } else { - dns_maybe_finish_next_locked(exec_ctx, r); - } - gpr_mu_unlock(&r->mu); -} - -static void dns_on_retry_timer(grpc_exec_ctx *exec_ctx, void *arg, - bool success) { - dns_resolver *r = arg; - - gpr_mu_lock(&r->mu); - r->have_retry_timer = false; - if (success) { - if (!r->resolving) { - dns_start_resolving_locked(r); - } - } - gpr_mu_unlock(&r->mu); - - GRPC_RESOLVER_UNREF(exec_ctx, &r->base, "retry-timer"); -} - -static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg, - grpc_resolved_addresses *addresses) { - dns_resolver *r = arg; - grpc_client_config *config = NULL; - grpc_subchannel **subchannels; - grpc_subchannel_args args; - grpc_lb_policy *lb_policy; - size_t i; - gpr_mu_lock(&r->mu); - GPR_ASSERT(r->resolving); - r->resolving = 0; - if (addresses != NULL) { - grpc_lb_policy_args lb_policy_args; - config = grpc_client_config_create(); - subchannels = gpr_malloc(sizeof(grpc_subchannel *) * addresses->naddrs); - size_t naddrs = 0; - for (i = 0; i < addresses->naddrs; i++) { - memset(&args, 0, sizeof(args)); - args.addr = (struct sockaddr *)(addresses->addrs[i].addr); - args.addr_len = (size_t)addresses->addrs[i].len; - grpc_subchannel *subchannel = grpc_subchannel_factory_create_subchannel( - exec_ctx, r->subchannel_factory, &args); - if (subchannel != NULL) { - subchannels[naddrs++] = subchannel; - } - } - memset(&lb_policy_args, 0, sizeof(lb_policy_args)); - lb_policy_args.subchannels = subchannels; - lb_policy_args.num_subchannels = naddrs; - lb_policy = grpc_lb_policy_create(r->lb_policy_name, &lb_policy_args); - if (lb_policy != NULL) { - grpc_client_config_set_lb_policy(config, lb_policy); - GRPC_LB_POLICY_UNREF(exec_ctx, lb_policy, "construction"); - } - grpc_resolved_addresses_destroy(addresses); - gpr_free(subchannels); - } else { - gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC); - gpr_timespec next_try = gpr_backoff_step(&r->backoff_state, now); - gpr_timespec timeout = gpr_time_sub(next_try, now); - gpr_log(GPR_DEBUG, "dns resolution failed: retrying in %d.%09d seconds", - timeout.tv_sec, timeout.tv_nsec); - GPR_ASSERT(!r->have_retry_timer); - r->have_retry_timer = true; - GRPC_RESOLVER_REF(&r->base, "retry-timer"); - grpc_timer_init(exec_ctx, &r->retry_timer, next_try, dns_on_retry_timer, r, - now); - } - if (r->resolved_config) { - grpc_client_config_unref(exec_ctx, r->resolved_config); - } - r->resolved_config = config; - r->resolved_version++; - dns_maybe_finish_next_locked(exec_ctx, r); - gpr_mu_unlock(&r->mu); - - GRPC_RESOLVER_UNREF(exec_ctx, &r->base, "dns-resolving"); -} - -static void dns_start_resolving_locked(dns_resolver *r) { - GRPC_RESOLVER_REF(&r->base, "dns-resolving"); - GPR_ASSERT(!r->resolving); - r->resolving = 1; - grpc_resolve_address(r->name, r->default_port, dns_on_resolved, r); -} - -static void dns_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx, - dns_resolver *r) { - if (r->next_completion != NULL && - r->resolved_version != r->published_version) { - *r->target_config = r->resolved_config; - if (r->resolved_config) { - grpc_client_config_ref(r->resolved_config); - } - grpc_exec_ctx_enqueue(exec_ctx, r->next_completion, true, NULL); - r->next_completion = NULL; - r->published_version = r->resolved_version; - } -} - -static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) { - dns_resolver *r = (dns_resolver *)gr; - gpr_mu_destroy(&r->mu); - if (r->resolved_config) { - grpc_client_config_unref(exec_ctx, r->resolved_config); - } - grpc_subchannel_factory_unref(exec_ctx, r->subchannel_factory); - gpr_free(r->name); - gpr_free(r->default_port); - gpr_free(r->lb_policy_name); - gpr_free(r); -} - -static grpc_resolver *dns_create(grpc_resolver_args *args, - const char *default_port, - const char *lb_policy_name) { - dns_resolver *r; - const char *path = args->uri->path; - - if (0 != strcmp(args->uri->authority, "")) { - gpr_log(GPR_ERROR, "authority based dns uri's not supported"); - return NULL; - } - - if (path[0] == '/') ++path; - - r = gpr_malloc(sizeof(dns_resolver)); - memset(r, 0, sizeof(*r)); - gpr_ref_init(&r->refs, 1); - gpr_mu_init(&r->mu); - grpc_resolver_init(&r->base, &dns_resolver_vtable); - r->name = gpr_strdup(path); - r->default_port = gpr_strdup(default_port); - r->subchannel_factory = args->subchannel_factory; - gpr_backoff_init(&r->backoff_state, BACKOFF_MULTIPLIER, BACKOFF_JITTER, - BACKOFF_MIN_SECONDS * 1000, BACKOFF_MAX_SECONDS * 1000); - grpc_subchannel_factory_ref(r->subchannel_factory); - r->lb_policy_name = gpr_strdup(lb_policy_name); - return &r->base; -} - -/* - * FACTORY - */ - -static void dns_factory_ref(grpc_resolver_factory *factory) {} - -static void dns_factory_unref(grpc_resolver_factory *factory) {} - -static grpc_resolver *dns_factory_create_resolver( - grpc_resolver_factory *factory, grpc_resolver_args *args) { - return dns_create(args, "https", "pick_first"); -} - -char *dns_factory_get_default_host_name(grpc_resolver_factory *factory, - grpc_uri *uri) { - const char *path = uri->path; - if (path[0] == '/') ++path; - return gpr_strdup(path); -} - -static const grpc_resolver_factory_vtable dns_factory_vtable = { - dns_factory_ref, dns_factory_unref, dns_factory_create_resolver, - dns_factory_get_default_host_name, "dns"}; -static grpc_resolver_factory dns_resolver_factory = {&dns_factory_vtable}; - -grpc_resolver_factory *grpc_dns_resolver_factory_create() { - return &dns_resolver_factory; -} diff --git a/src/core/lib/client_config/resolvers/dns_resolver.h b/src/core/lib/client_config/resolvers/dns_resolver.h deleted file mode 100644 index eb46e41c77..0000000000 --- a/src/core/lib/client_config/resolvers/dns_resolver.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H -#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H - -#include "src/core/lib/client_config/resolver_factory.h" - -/** Create a dns resolver factory */ -grpc_resolver_factory *grpc_dns_resolver_factory_create(void); - -#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H */ diff --git a/src/core/lib/client_config/resolvers/sockaddr_resolver.c b/src/core/lib/client_config/resolvers/sockaddr_resolver.c deleted file mode 100644 index 66cddc3ed9..0000000000 --- a/src/core/lib/client_config/resolvers/sockaddr_resolver.c +++ /dev/null @@ -1,372 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <grpc/support/port_platform.h> - -#include "src/core/lib/client_config/resolvers/sockaddr_resolver.h" - -#include <stdio.h> -#include <string.h> - -#include <grpc/support/alloc.h> -#include <grpc/support/host_port.h> -#include <grpc/support/string_util.h> - -#include "src/core/lib/client_config/lb_policy_registry.h" -#include "src/core/lib/iomgr/resolve_address.h" -#include "src/core/lib/iomgr/unix_sockets_posix.h" -#include "src/core/lib/support/string.h" - -typedef struct { - /** base class: must be first */ - grpc_resolver base; - /** refcount */ - gpr_refcount refs; - /** subchannel factory */ - grpc_subchannel_factory *subchannel_factory; - /** load balancing policy name */ - char *lb_policy_name; - - /** the addresses that we've 'resolved' */ - struct sockaddr_storage *addrs; - /** the corresponding length of the addresses */ - size_t *addrs_len; - /** how many elements in \a addrs */ - size_t num_addrs; - - /** mutex guarding the rest of the state */ - gpr_mu mu; - /** have we published? */ - int published; - /** pending next completion, or NULL */ - grpc_closure *next_completion; - /** target config address for next completion */ - grpc_client_config **target_config; -} sockaddr_resolver; - -static void sockaddr_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *r); - -static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx, - sockaddr_resolver *r); - -static void sockaddr_shutdown(grpc_exec_ctx *exec_ctx, grpc_resolver *r); -static void sockaddr_channel_saw_error(grpc_exec_ctx *exec_ctx, - grpc_resolver *r); -static void sockaddr_next(grpc_exec_ctx *exec_ctx, grpc_resolver *r, - grpc_client_config **target_config, - grpc_closure *on_complete); - -static const grpc_resolver_vtable sockaddr_resolver_vtable = { - sockaddr_destroy, sockaddr_shutdown, sockaddr_channel_saw_error, - sockaddr_next}; - -static void sockaddr_shutdown(grpc_exec_ctx *exec_ctx, - grpc_resolver *resolver) { - sockaddr_resolver *r = (sockaddr_resolver *)resolver; - gpr_mu_lock(&r->mu); - if (r->next_completion != NULL) { - *r->target_config = NULL; - grpc_exec_ctx_enqueue(exec_ctx, r->next_completion, true, NULL); - r->next_completion = NULL; - } - gpr_mu_unlock(&r->mu); -} - -static void sockaddr_channel_saw_error(grpc_exec_ctx *exec_ctx, - grpc_resolver *resolver) { - sockaddr_resolver *r = (sockaddr_resolver *)resolver; - gpr_mu_lock(&r->mu); - r->published = 0; - sockaddr_maybe_finish_next_locked(exec_ctx, r); - gpr_mu_unlock(&r->mu); -} - -static void sockaddr_next(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver, - grpc_client_config **target_config, - grpc_closure *on_complete) { - sockaddr_resolver *r = (sockaddr_resolver *)resolver; - gpr_mu_lock(&r->mu); - GPR_ASSERT(!r->next_completion); - r->next_completion = on_complete; - r->target_config = target_config; - sockaddr_maybe_finish_next_locked(exec_ctx, r); - gpr_mu_unlock(&r->mu); -} - -static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx, - sockaddr_resolver *r) { - grpc_client_config *cfg; - grpc_lb_policy *lb_policy; - grpc_lb_policy_args lb_policy_args; - grpc_subchannel **subchannels; - grpc_subchannel_args args; - - if (r->next_completion != NULL && !r->published) { - size_t i; - cfg = grpc_client_config_create(); - subchannels = gpr_malloc(sizeof(grpc_subchannel *) * r->num_addrs); - for (i = 0; i < r->num_addrs; i++) { - memset(&args, 0, sizeof(args)); - args.addr = (struct sockaddr *)&r->addrs[i]; - args.addr_len = r->addrs_len[i]; - subchannels[i] = grpc_subchannel_factory_create_subchannel( - exec_ctx, r->subchannel_factory, &args); - } - memset(&lb_policy_args, 0, sizeof(lb_policy_args)); - lb_policy_args.subchannels = subchannels; - lb_policy_args.num_subchannels = r->num_addrs; - lb_policy = grpc_lb_policy_create(r->lb_policy_name, &lb_policy_args); - gpr_free(subchannels); - grpc_client_config_set_lb_policy(cfg, lb_policy); - GRPC_LB_POLICY_UNREF(exec_ctx, lb_policy, "sockaddr"); - r->published = 1; - *r->target_config = cfg; - grpc_exec_ctx_enqueue(exec_ctx, r->next_completion, true, NULL); - r->next_completion = NULL; - } -} - -static void sockaddr_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) { - sockaddr_resolver *r = (sockaddr_resolver *)gr; - gpr_mu_destroy(&r->mu); - grpc_subchannel_factory_unref(exec_ctx, r->subchannel_factory); - gpr_free(r->addrs); - gpr_free(r->addrs_len); - gpr_free(r->lb_policy_name); - gpr_free(r); -} - -static char *ip_get_default_authority(grpc_uri *uri) { - const char *path = uri->path; - if (path[0] == '/') ++path; - return gpr_strdup(path); -} - -static char *ipv4_get_default_authority(grpc_resolver_factory *factory, - grpc_uri *uri) { - return ip_get_default_authority(uri); -} - -static char *ipv6_get_default_authority(grpc_resolver_factory *factory, - grpc_uri *uri) { - return ip_get_default_authority(uri); -} - -static int parse_ipv4(grpc_uri *uri, struct sockaddr_storage *addr, - size_t *len) { - const char *host_port = uri->path; - char *host; - char *port; - int port_num; - int result = 0; - struct sockaddr_in *in = (struct sockaddr_in *)addr; - - if (*host_port == '/') ++host_port; - if (!gpr_split_host_port(host_port, &host, &port)) { - return 0; - } - - memset(in, 0, sizeof(*in)); - *len = sizeof(*in); - in->sin_family = AF_INET; - if (inet_pton(AF_INET, host, &in->sin_addr) == 0) { - gpr_log(GPR_ERROR, "invalid ipv4 address: '%s'", host); - goto done; - } - - if (port != NULL) { - if (sscanf(port, "%d", &port_num) != 1 || port_num < 0 || - port_num > 65535) { - gpr_log(GPR_ERROR, "invalid ipv4 port: '%s'", port); - goto done; - } - in->sin_port = htons((uint16_t)port_num); - } else { - gpr_log(GPR_ERROR, "no port given for ipv4 scheme"); - goto done; - } - - result = 1; -done: - gpr_free(host); - gpr_free(port); - return result; -} - -static int parse_ipv6(grpc_uri *uri, struct sockaddr_storage *addr, - size_t *len) { - const char *host_port = uri->path; - char *host; - char *port; - int port_num; - int result = 0; - struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr; - - if (*host_port == '/') ++host_port; - if (!gpr_split_host_port(host_port, &host, &port)) { - return 0; - } - - memset(in6, 0, sizeof(*in6)); - *len = sizeof(*in6); - in6->sin6_family = AF_INET6; - if (inet_pton(AF_INET6, host, &in6->sin6_addr) == 0) { - gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host); - goto done; - } - - if (port != NULL) { - if (sscanf(port, "%d", &port_num) != 1 || port_num < 0 || - port_num > 65535) { - gpr_log(GPR_ERROR, "invalid ipv6 port: '%s'", port); - goto done; - } - in6->sin6_port = htons((uint16_t)port_num); - } else { - gpr_log(GPR_ERROR, "no port given for ipv6 scheme"); - goto done; - } - - result = 1; -done: - gpr_free(host); - gpr_free(port); - return result; -} - -static void do_nothing(void *ignored) {} - -static grpc_resolver *sockaddr_create( - grpc_resolver_args *args, const char *default_lb_policy_name, - int parse(grpc_uri *uri, struct sockaddr_storage *dst, size_t *len)) { - size_t i; - int errors_found = 0; /* GPR_FALSE */ - sockaddr_resolver *r; - gpr_slice path_slice; - gpr_slice_buffer path_parts; - - if (0 != strcmp(args->uri->authority, "")) { - gpr_log(GPR_ERROR, "authority based uri's not supported by the %s scheme", - args->uri->scheme); - return NULL; - } - - r = gpr_malloc(sizeof(sockaddr_resolver)); - memset(r, 0, sizeof(*r)); - - r->lb_policy_name = NULL; - if (0 != strcmp(args->uri->query, "")) { - gpr_slice query_slice; - gpr_slice_buffer query_parts; - - query_slice = - gpr_slice_new(args->uri->query, strlen(args->uri->query), do_nothing); - gpr_slice_buffer_init(&query_parts); - gpr_slice_split(query_slice, "=", &query_parts); - GPR_ASSERT(query_parts.count == 2); - if (0 == gpr_slice_str_cmp(query_parts.slices[0], "lb_policy")) { - r->lb_policy_name = gpr_dump_slice(query_parts.slices[1], GPR_DUMP_ASCII); - } - gpr_slice_buffer_destroy(&query_parts); - gpr_slice_unref(query_slice); - } - if (r->lb_policy_name == NULL) { - r->lb_policy_name = gpr_strdup(default_lb_policy_name); - } - - path_slice = - gpr_slice_new(args->uri->path, strlen(args->uri->path), do_nothing); - gpr_slice_buffer_init(&path_parts); - - gpr_slice_split(path_slice, ",", &path_parts); - r->num_addrs = path_parts.count; - r->addrs = gpr_malloc(sizeof(struct sockaddr_storage) * r->num_addrs); - r->addrs_len = gpr_malloc(sizeof(*r->addrs_len) * r->num_addrs); - - for (i = 0; i < r->num_addrs; i++) { - grpc_uri ith_uri = *args->uri; - char *part_str = gpr_dump_slice(path_parts.slices[i], GPR_DUMP_ASCII); - ith_uri.path = part_str; - if (!parse(&ith_uri, &r->addrs[i], &r->addrs_len[i])) { - errors_found = 1; /* GPR_TRUE */ - } - gpr_free(part_str); - if (errors_found) break; - } - - gpr_slice_buffer_destroy(&path_parts); - gpr_slice_unref(path_slice); - if (errors_found) { - gpr_free(r->lb_policy_name); - gpr_free(r->addrs); - gpr_free(r->addrs_len); - gpr_free(r); - return NULL; - } - - gpr_ref_init(&r->refs, 1); - gpr_mu_init(&r->mu); - grpc_resolver_init(&r->base, &sockaddr_resolver_vtable); - r->subchannel_factory = args->subchannel_factory; - grpc_subchannel_factory_ref(r->subchannel_factory); - - return &r->base; -} - -/* - * FACTORY - */ - -static void sockaddr_factory_ref(grpc_resolver_factory *factory) {} - -static void sockaddr_factory_unref(grpc_resolver_factory *factory) {} - -#define DECL_FACTORY(name, prefix) \ - static grpc_resolver *name##_factory_create_resolver( \ - grpc_resolver_factory *factory, grpc_resolver_args *args) { \ - return sockaddr_create(args, "pick_first", prefix##parse_##name); \ - } \ - static const grpc_resolver_factory_vtable name##_factory_vtable = { \ - sockaddr_factory_ref, sockaddr_factory_unref, \ - name##_factory_create_resolver, prefix##name##_get_default_authority, \ - #name}; \ - static grpc_resolver_factory name##_resolver_factory = { \ - &name##_factory_vtable}; \ - grpc_resolver_factory *grpc_##name##_resolver_factory_create() { \ - return &name##_resolver_factory; \ - } - -#ifdef GPR_HAVE_UNIX_SOCKET -DECL_FACTORY(unix, grpc_) -#endif -DECL_FACTORY(ipv4, ) DECL_FACTORY(ipv6, ) diff --git a/src/core/lib/client_config/resolvers/sockaddr_resolver.h b/src/core/lib/client_config/resolvers/sockaddr_resolver.h deleted file mode 100644 index 45c55bd160..0000000000 --- a/src/core/lib/client_config/resolvers/sockaddr_resolver.h +++ /dev/null @@ -1,50 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H -#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H - -#include <grpc/support/port_platform.h> - -#include "src/core/lib/client_config/resolver_factory.h" - -grpc_resolver_factory *grpc_ipv4_resolver_factory_create(void); - -grpc_resolver_factory *grpc_ipv6_resolver_factory_create(void); - -#ifdef GPR_POSIX_SOCKET -/** Create a unix resolver factory */ -grpc_resolver_factory *grpc_unix_resolver_factory_create(void); -#endif - -#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H */ diff --git a/src/core/lib/client_config/resolvers/zookeeper_resolver.c b/src/core/lib/client_config/resolvers/zookeeper_resolver.c deleted file mode 100644 index 3bb0bbdf5c..0000000000 --- a/src/core/lib/client_config/resolvers/zookeeper_resolver.c +++ /dev/null @@ -1,520 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "src/core/lib/client_config/resolvers/zookeeper_resolver.h" - -#include <string.h> - -#include <grpc/support/alloc.h> -#include <grpc/support/string_util.h> - -#include <grpc/grpc_zookeeper.h> -#include <zookeeper/zookeeper.h> - -#include "src/core/lib/client_config/lb_policy_registry.h" -#include "src/core/lib/client_config/resolver_registry.h" -#include "src/core/lib/iomgr/resolve_address.h" -#include "src/core/lib/json/json.h" -#include "src/core/lib/support/string.h" -#include "src/core/lib/surface/api_trace.h" - -/** Zookeeper session expiration time in milliseconds */ -#define GRPC_ZOOKEEPER_SESSION_TIMEOUT 15000 - -typedef struct { - /** base class: must be first */ - grpc_resolver base; - /** refcount */ - gpr_refcount refs; - /** name to resolve */ - char *name; - /** subchannel factory */ - grpc_subchannel_factory *subchannel_factory; - /** load balancing policy name */ - char *lb_policy_name; - - /** mutex guarding the rest of the state */ - gpr_mu mu; - /** are we currently resolving? */ - int resolving; - /** which version of resolved_config have we published? */ - int published_version; - /** which version of resolved_config is current? */ - int resolved_version; - /** pending next completion, or NULL */ - grpc_closure *next_completion; - /** target config address for next completion */ - grpc_client_config **target_config; - /** current (fully resolved) config */ - grpc_client_config *resolved_config; - - /** zookeeper handle */ - zhandle_t *zookeeper_handle; - /** zookeeper resolved addresses */ - grpc_resolved_addresses *resolved_addrs; - /** total number of addresses to be resolved */ - int resolved_total; - /** number of addresses resolved */ - int resolved_num; -} zookeeper_resolver; - -static void zookeeper_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *r); - -static void zookeeper_start_resolving_locked(zookeeper_resolver *r); -static void zookeeper_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx, - zookeeper_resolver *r); - -static void zookeeper_shutdown(grpc_exec_ctx *exec_ctx, grpc_resolver *r); -static void zookeeper_channel_saw_error(grpc_exec_ctx *exec_ctx, - grpc_resolver *r); -static void zookeeper_next(grpc_exec_ctx *exec_ctx, grpc_resolver *r, - grpc_client_config **target_config, - grpc_closure *on_complete); - -static const grpc_resolver_vtable zookeeper_resolver_vtable = { - zookeeper_destroy, zookeeper_shutdown, zookeeper_channel_saw_error, - zookeeper_next}; - -static void zookeeper_shutdown(grpc_exec_ctx *exec_ctx, - grpc_resolver *resolver) { - zookeeper_resolver *r = (zookeeper_resolver *)resolver; - grpc_closure *call = NULL; - gpr_mu_lock(&r->mu); - if (r->next_completion != NULL) { - *r->target_config = NULL; - call = r->next_completion; - r->next_completion = NULL; - } - zookeeper_close(r->zookeeper_handle); - gpr_mu_unlock(&r->mu); - if (call != NULL) { - call->cb(exec_ctx, call->cb_arg, 1); - } -} - -static void zookeeper_channel_saw_error(grpc_exec_ctx *exec_ctx, - grpc_resolver *resolver) { - zookeeper_resolver *r = (zookeeper_resolver *)resolver; - gpr_mu_lock(&r->mu); - if (r->resolving == 0) { - zookeeper_start_resolving_locked(r); - } - gpr_mu_unlock(&r->mu); -} - -static void zookeeper_next(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver, - grpc_client_config **target_config, - grpc_closure *on_complete) { - zookeeper_resolver *r = (zookeeper_resolver *)resolver; - gpr_mu_lock(&r->mu); - GPR_ASSERT(r->next_completion == NULL); - r->next_completion = on_complete; - r->target_config = target_config; - if (r->resolved_version == 0 && r->resolving == 0) { - zookeeper_start_resolving_locked(r); - } else { - zookeeper_maybe_finish_next_locked(exec_ctx, r); - } - gpr_mu_unlock(&r->mu); -} - -/** Zookeeper global watcher for connection management - TODO: better connection management besides logs */ -static void zookeeper_global_watcher(zhandle_t *zookeeper_handle, int type, - int state, const char *path, - void *watcher_ctx) { - if (type == ZOO_SESSION_EVENT) { - if (state == ZOO_EXPIRED_SESSION_STATE) { - gpr_log(GPR_ERROR, "Zookeeper session expired"); - } else if (state == ZOO_AUTH_FAILED_STATE) { - gpr_log(GPR_ERROR, "Zookeeper authentication failed"); - } - } -} - -/** Zookeeper watcher triggered by changes to watched nodes - Once triggered, it tries to resolve again to get updated addresses */ -static void zookeeper_watcher(zhandle_t *zookeeper_handle, int type, int state, - const char *path, void *watcher_ctx) { - if (watcher_ctx != NULL) { - zookeeper_resolver *r = (zookeeper_resolver *)watcher_ctx; - if (state == ZOO_CONNECTED_STATE) { - gpr_mu_lock(&r->mu); - if (r->resolving == 0) { - zookeeper_start_resolving_locked(r); - } - gpr_mu_unlock(&r->mu); - } - } -} - -/** Callback function after getting all resolved addresses - Creates a subchannel for each address */ -static void zookeeper_on_resolved(grpc_exec_ctx *exec_ctx, void *arg, - grpc_resolved_addresses *addresses) { - zookeeper_resolver *r = arg; - grpc_client_config *config = NULL; - grpc_subchannel **subchannels; - grpc_subchannel_args args; - grpc_lb_policy *lb_policy; - size_t i; - if (addresses != NULL) { - grpc_lb_policy_args lb_policy_args; - config = grpc_client_config_create(); - subchannels = gpr_malloc(sizeof(grpc_subchannel *) * addresses->naddrs); - for (i = 0; i < addresses->naddrs; i++) { - memset(&args, 0, sizeof(args)); - args.addr = (struct sockaddr *)(addresses->addrs[i].addr); - args.addr_len = addresses->addrs[i].len; - subchannels[i] = grpc_subchannel_factory_create_subchannel( - exec_ctx, r->subchannel_factory, &args); - } - lb_policy_args.subchannels = subchannels; - lb_policy_args.num_subchannels = addresses->naddrs; - lb_policy = grpc_lb_policy_create(r->lb_policy_name, &lb_policy_args); - grpc_client_config_set_lb_policy(config, lb_policy); - GRPC_LB_POLICY_UNREF(exec_ctx, lb_policy, "construction"); - grpc_resolved_addresses_destroy(addresses); - gpr_free(subchannels); - } - gpr_mu_lock(&r->mu); - GPR_ASSERT(r->resolving == 1); - r->resolving = 0; - if (r->resolved_config != NULL) { - grpc_client_config_unref(exec_ctx, r->resolved_config); - } - r->resolved_config = config; - r->resolved_version++; - zookeeper_maybe_finish_next_locked(exec_ctx, r); - gpr_mu_unlock(&r->mu); - - GRPC_RESOLVER_UNREF(exec_ctx, &r->base, "zookeeper-resolving"); -} - -/** Callback function for each DNS resolved address */ -static void zookeeper_dns_resolved(grpc_exec_ctx *exec_ctx, void *arg, - grpc_resolved_addresses *addresses) { - size_t i; - zookeeper_resolver *r = arg; - int resolve_done = 0; - - gpr_mu_lock(&r->mu); - r->resolved_num++; - r->resolved_addrs->addrs = - gpr_realloc(r->resolved_addrs->addrs, - sizeof(grpc_resolved_address) * - (r->resolved_addrs->naddrs + addresses->naddrs)); - for (i = 0; i < addresses->naddrs; i++) { - memcpy(r->resolved_addrs->addrs[i + r->resolved_addrs->naddrs].addr, - addresses->addrs[i].addr, addresses->addrs[i].len); - r->resolved_addrs->addrs[i + r->resolved_addrs->naddrs].len = - addresses->addrs[i].len; - } - - r->resolved_addrs->naddrs += addresses->naddrs; - grpc_resolved_addresses_destroy(addresses); - - /** Wait for all addresses to be resolved */ - resolve_done = (r->resolved_num == r->resolved_total); - gpr_mu_unlock(&r->mu); - if (resolve_done) { - zookeeper_on_resolved(exec_ctx, r, r->resolved_addrs); - } -} - -/** Parses JSON format address of a zookeeper node */ -static char *zookeeper_parse_address(const char *value, size_t value_len) { - grpc_json *json; - grpc_json *cur; - const char *host; - const char *port; - char *buffer; - char *address = NULL; - - buffer = gpr_malloc(value_len); - memcpy(buffer, value, value_len); - json = grpc_json_parse_string_with_len(buffer, value_len); - if (json != NULL) { - host = NULL; - port = NULL; - for (cur = json->child; cur != NULL; cur = cur->next) { - if (!strcmp(cur->key, "host")) { - host = cur->value; - if (port != NULL) { - break; - } - } else if (!strcmp(cur->key, "port")) { - port = cur->value; - if (host != NULL) { - break; - } - } - } - if (host != NULL && port != NULL) { - gpr_asprintf(&address, "%s:%s", host, port); - } - grpc_json_destroy(json); - } - gpr_free(buffer); - - return address; -} - -static void zookeeper_get_children_node_completion(int rc, const char *value, - int value_len, - const struct Stat *stat, - const void *arg) { - char *address = NULL; - zookeeper_resolver *r = (zookeeper_resolver *)arg; - int resolve_done = 0; - grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; - - if (rc != 0) { - gpr_log(GPR_ERROR, "Error in getting a child node of %s", r->name); - grpc_exec_ctx_finish(&exec_ctx); - return; - } - - address = zookeeper_parse_address(value, (size_t)value_len); - if (address != NULL) { - /** Further resolves address by DNS */ - grpc_resolve_address(address, NULL, zookeeper_dns_resolved, r); - gpr_free(address); - } else { - gpr_log(GPR_ERROR, "Error in resolving a child node of %s", r->name); - gpr_mu_lock(&r->mu); - r->resolved_total--; - resolve_done = (r->resolved_num == r->resolved_total); - gpr_mu_unlock(&r->mu); - if (resolve_done) { - zookeeper_on_resolved(&exec_ctx, r, r->resolved_addrs); - } - } - - grpc_exec_ctx_finish(&exec_ctx); -} - -static void zookeeper_get_children_completion( - int rc, const struct String_vector *children, const void *arg) { - char *path; - int status; - int i; - zookeeper_resolver *r = (zookeeper_resolver *)arg; - - if (rc != 0) { - gpr_log(GPR_ERROR, "Error in getting zookeeper children of %s", r->name); - return; - } - - if (children->count == 0) { - gpr_log(GPR_ERROR, "Error in resolving zookeeper address %s", r->name); - return; - } - - r->resolved_addrs = gpr_malloc(sizeof(grpc_resolved_addresses)); - r->resolved_addrs->addrs = NULL; - r->resolved_addrs->naddrs = 0; - r->resolved_total = children->count; - - /** TODO: Replace expensive heap allocation with stack - if we can get maximum length of zookeeper path */ - for (i = 0; i < children->count; i++) { - gpr_asprintf(&path, "%s/%s", r->name, children->data[i]); - status = zoo_awget(r->zookeeper_handle, path, zookeeper_watcher, r, - zookeeper_get_children_node_completion, r); - gpr_free(path); - if (status != 0) { - gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", path); - } - } -} - -static void zookeeper_get_node_completion(int rc, const char *value, - int value_len, - const struct Stat *stat, - const void *arg) { - int status; - char *address = NULL; - zookeeper_resolver *r = (zookeeper_resolver *)arg; - r->resolved_addrs = NULL; - r->resolved_total = 0; - r->resolved_num = 0; - - if (rc != 0) { - gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", r->name); - return; - } - - /** If zookeeper node of path r->name does not have address - (i.e. service node), get its children */ - address = zookeeper_parse_address(value, (size_t)value_len); - if (address != NULL) { - r->resolved_addrs = gpr_malloc(sizeof(grpc_resolved_addresses)); - r->resolved_addrs->addrs = NULL; - r->resolved_addrs->naddrs = 0; - r->resolved_total = 1; - /** Further resolves address by DNS */ - grpc_resolve_address(address, NULL, zookeeper_dns_resolved, r); - gpr_free(address); - return; - } - - status = zoo_awget_children(r->zookeeper_handle, r->name, zookeeper_watcher, - r, zookeeper_get_children_completion, r); - if (status != 0) { - gpr_log(GPR_ERROR, "Error in getting zookeeper children of %s", r->name); - } -} - -static void zookeeper_resolve_address(zookeeper_resolver *r) { - int status; - status = zoo_awget(r->zookeeper_handle, r->name, zookeeper_watcher, r, - zookeeper_get_node_completion, r); - if (status != 0) { - gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", r->name); - } -} - -static void zookeeper_start_resolving_locked(zookeeper_resolver *r) { - GRPC_RESOLVER_REF(&r->base, "zookeeper-resolving"); - GPR_ASSERT(r->resolving == 0); - r->resolving = 1; - zookeeper_resolve_address(r); -} - -static void zookeeper_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx, - zookeeper_resolver *r) { - if (r->next_completion != NULL && - r->resolved_version != r->published_version) { - *r->target_config = r->resolved_config; - if (r->resolved_config != NULL) { - grpc_client_config_ref(r->resolved_config); - } - grpc_exec_ctx_enqueue(exec_ctx, r->next_completion, true, NULL); - r->next_completion = NULL; - r->published_version = r->resolved_version; - } -} - -static void zookeeper_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) { - zookeeper_resolver *r = (zookeeper_resolver *)gr; - gpr_mu_destroy(&r->mu); - if (r->resolved_config != NULL) { - grpc_client_config_unref(exec_ctx, r->resolved_config); - } - grpc_subchannel_factory_unref(exec_ctx, r->subchannel_factory); - gpr_free(r->name); - gpr_free(r->lb_policy_name); - gpr_free(r); -} - -static grpc_resolver *zookeeper_create(grpc_resolver_args *args, - const char *lb_policy_name) { - zookeeper_resolver *r; - size_t length; - char *path = args->uri->path; - - if (0 == strcmp(args->uri->authority, "")) { - gpr_log(GPR_ERROR, "No authority specified in zookeeper uri"); - return NULL; - } - - /** Removes the trailing slash if exists */ - length = strlen(path); - if (length > 1 && path[length - 1] == '/') { - path[length - 1] = 0; - } - - r = gpr_malloc(sizeof(zookeeper_resolver)); - memset(r, 0, sizeof(*r)); - gpr_ref_init(&r->refs, 1); - gpr_mu_init(&r->mu); - grpc_resolver_init(&r->base, &zookeeper_resolver_vtable); - r->name = gpr_strdup(path); - - r->subchannel_factory = args->subchannel_factory; - grpc_subchannel_factory_ref(r->subchannel_factory); - - r->lb_policy_name = gpr_strdup(lb_policy_name); - - /** Initializes zookeeper client */ - zoo_set_debug_level(ZOO_LOG_LEVEL_WARN); - r->zookeeper_handle = - zookeeper_init(args->uri->authority, zookeeper_global_watcher, - GRPC_ZOOKEEPER_SESSION_TIMEOUT, 0, 0, 0); - if (r->zookeeper_handle == NULL) { - gpr_log(GPR_ERROR, "Unable to connect to zookeeper server"); - return NULL; - } - - return &r->base; -} - -static void zookeeper_plugin_init() { - grpc_register_resolver_type(grpc_zookeeper_resolver_factory_create()); -} - -void grpc_zookeeper_register() { - GRPC_API_TRACE("grpc_zookeeper_register(void)", 0, ()); - grpc_register_plugin(zookeeper_plugin_init, NULL); -} - -/* - * FACTORY - */ - -static void zookeeper_factory_ref(grpc_resolver_factory *factory) {} - -static void zookeeper_factory_unref(grpc_resolver_factory *factory) {} - -static char *zookeeper_factory_get_default_hostname( - grpc_resolver_factory *factory, grpc_uri *uri) { - return NULL; -} - -static grpc_resolver *zookeeper_factory_create_resolver( - grpc_resolver_factory *factory, grpc_resolver_args *args) { - return zookeeper_create(args, "pick_first"); -} - -static const grpc_resolver_factory_vtable zookeeper_factory_vtable = { - zookeeper_factory_ref, zookeeper_factory_unref, - zookeeper_factory_create_resolver, zookeeper_factory_get_default_hostname, - "zookeeper"}; - -static grpc_resolver_factory zookeeper_resolver_factory = { - &zookeeper_factory_vtable}; - -grpc_resolver_factory *grpc_zookeeper_resolver_factory_create() { - return &zookeeper_resolver_factory; -} diff --git a/src/core/lib/client_config/resolvers/zookeeper_resolver.h b/src/core/lib/client_config/resolvers/zookeeper_resolver.h deleted file mode 100644 index 7ee7604360..0000000000 --- a/src/core/lib/client_config/resolvers/zookeeper_resolver.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H -#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H - -#include "src/core/lib/client_config/resolver_factory.h" - -/** Create a zookeeper resolver factory */ -grpc_resolver_factory *grpc_zookeeper_resolver_factory_create(void); - -#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H */ diff --git a/src/core/lib/client_config/subchannel.c b/src/core/lib/client_config/subchannel.c index 41242f0dd7..47c53a16ba 100644 --- a/src/core/lib/client_config/subchannel.c +++ b/src/core/lib/client_config/subchannel.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/subchannel.h b/src/core/lib/client_config/subchannel.h index b4f545be52..68aeff39a1 100644 --- a/src/core/lib/client_config/subchannel.h +++ b/src/core/lib/client_config/subchannel.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/subchannel_factory.c b/src/core/lib/client_config/subchannel_factory.c index 727a48a6c8..541368ec96 100644 --- a/src/core/lib/client_config/subchannel_factory.c +++ b/src/core/lib/client_config/subchannel_factory.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/subchannel_factory.h b/src/core/lib/client_config/subchannel_factory.h index 3ba2f860fe..96d68a2079 100644 --- a/src/core/lib/client_config/subchannel_factory.h +++ b/src/core/lib/client_config/subchannel_factory.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/src/core/lib/client_config/uri_parser.c b/src/core/lib/client_config/uri_parser.c index d3228dec5f..6bec70da2d 100644 --- a/src/core/lib/client_config/uri_parser.c +++ b/src/core/lib/client_config/uri_parser.c @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -38,8 +38,12 @@ #include <grpc/support/alloc.h> #include <grpc/support/log.h> #include <grpc/support/port_platform.h> +#include <grpc/support/slice.h> +#include <grpc/support/slice_buffer.h> #include <grpc/support/string_util.h> +#include "src/core/lib/support/string.h" + /** a size_t default value... maps to all 1's */ #define NOT_SET (~(size_t)0) @@ -133,6 +137,51 @@ static int parse_fragment_or_query(const char *uri_text, size_t *i) { return 1; } +static void do_nothing(void *ignored) {} +static void parse_query_parts(grpc_uri *uri) { + static const char *QUERY_PARTS_SEPARATOR = "&"; + static const char *QUERY_PARTS_VALUE_SEPARATOR = "="; + GPR_ASSERT(uri->query != NULL); + if (uri->query[0] == '\0') { + uri->query_parts = NULL; + uri->query_parts_values = NULL; + uri->num_query_parts = 0; + return; + } + gpr_slice query_slice = + gpr_slice_new(uri->query, strlen(uri->query), do_nothing); + gpr_slice_buffer query_parts; /* the &-separated elements of the query */ + gpr_slice_buffer query_param_parts; /* the =-separated subelements */ + + gpr_slice_buffer_init(&query_parts); + gpr_slice_buffer_init(&query_param_parts); + + gpr_slice_split(query_slice, QUERY_PARTS_SEPARATOR, &query_parts); + uri->query_parts = gpr_malloc(query_parts.count * sizeof(char *)); + uri->query_parts_values = gpr_malloc(query_parts.count * sizeof(char *)); + uri->num_query_parts = query_parts.count; + for (size_t i = 0; i < query_parts.count; i++) { + gpr_slice_split(query_parts.slices[i], QUERY_PARTS_VALUE_SEPARATOR, + &query_param_parts); + GPR_ASSERT(query_param_parts.count > 0); + uri->query_parts[i] = + gpr_dump_slice(query_param_parts.slices[0], GPR_DUMP_ASCII); + if (query_param_parts.count > 1) { + /* TODO(dgq): only the first value after the separator is considered. + * Perhaps all chars after the first separator for the query part should + * be included, even if they include the separator. */ + uri->query_parts_values[i] = + gpr_dump_slice(query_param_parts.slices[1], GPR_DUMP_ASCII); + } else { + uri->query_parts_values[i] = NULL; + } + gpr_slice_buffer_reset_and_unref(&query_param_parts); + } + gpr_slice_buffer_destroy(&query_parts); + gpr_slice_buffer_destroy(&query_param_parts); + gpr_slice_unref(query_slice); +} + grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) { grpc_uri *uri; size_t scheme_begin = 0; @@ -227,16 +276,35 @@ grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) { uri->path = copy_component(uri_text, path_begin, path_end); uri->query = copy_component(uri_text, query_begin, query_end); uri->fragment = copy_component(uri_text, fragment_begin, fragment_end); + parse_query_parts(uri); return uri; } +const char *grpc_uri_get_query_arg(const grpc_uri *uri, const char *key) { + GPR_ASSERT(key != NULL); + if (key[0] == '\0') return NULL; + + for (size_t i = 0; i < uri->num_query_parts; ++i) { + if (0 == strcmp(key, uri->query_parts[i])) { + return uri->query_parts_values[i]; + } + } + return NULL; +} + void grpc_uri_destroy(grpc_uri *uri) { if (!uri) return; gpr_free(uri->scheme); gpr_free(uri->authority); gpr_free(uri->path); gpr_free(uri->query); + for (size_t i = 0; i < uri->num_query_parts; ++i) { + gpr_free(uri->query_parts[i]); + gpr_free(uri->query_parts_values[i]); + } + gpr_free(uri->query_parts); + gpr_free(uri->query_parts_values); gpr_free(uri->fragment); gpr_free(uri); } diff --git a/src/core/lib/client_config/uri_parser.h b/src/core/lib/client_config/uri_parser.h index d70d451e60..5d6785d293 100644 --- a/src/core/lib/client_config/uri_parser.h +++ b/src/core/lib/client_config/uri_parser.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015-2016, Google Inc. + * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -34,17 +34,29 @@ #ifndef GRPC_CORE_LIB_CLIENT_CONFIG_URI_PARSER_H #define GRPC_CORE_LIB_CLIENT_CONFIG_URI_PARSER_H +#include <stddef.h> + typedef struct { char *scheme; char *authority; char *path; char *query; + /** Query substrings separated by '&' */ + char **query_parts; + /** Number of elements in \a query_parts and \a query_parts_values */ + size_t num_query_parts; + /** Split each query part by '='. NULL if not present. */ + char **query_parts_values; char *fragment; } grpc_uri; /** parse a uri, return NULL on failure */ grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors); +/** return the part of a query string after the '=' in "?key=xxx&...", or NULL + * if key is not present */ +const char *grpc_uri_get_query_arg(const grpc_uri *uri, const char *key); + /** destroy a uri */ void grpc_uri_destroy(grpc_uri *uri); |