diff options
Diffstat (limited to 'src/core/lib/iomgr/tcp_client_uv.c')
| -rw-r--r-- | src/core/lib/iomgr/tcp_client_uv.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/tcp_client_uv.c b/src/core/lib/iomgr/tcp_client_uv.c new file mode 100644 index 0000000000..b07f9ceffa --- /dev/null +++ b/src/core/lib/iomgr/tcp_client_uv.c @@ -0,0 +1,173 @@ +/* + * + * 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/iomgr/port.h" + +#ifdef GRPC_UV + +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> + +#include "src/core/lib/iomgr/error.h" +#include "src/core/lib/iomgr/sockaddr_utils.h" +#include "src/core/lib/iomgr/tcp_client.h" +#include "src/core/lib/iomgr/tcp_uv.h" +#include "src/core/lib/iomgr/timer.h" + +typedef struct grpc_uv_tcp_connect { + uv_connect_t connect_req; + grpc_timer alarm; + uv_tcp_t *tcp_handle; + grpc_closure *closure; + grpc_endpoint **endpoint; + int refs; + char *addr_name; + grpc_resource_quota *resource_quota; +} grpc_uv_tcp_connect; + +static void uv_tcp_connect_cleanup(grpc_exec_ctx *exec_ctx, + grpc_uv_tcp_connect *connect) { + grpc_resource_quota_internal_unref(exec_ctx, connect->resource_quota); + gpr_free(connect); +} + +static void tcp_close_callback(uv_handle_t *handle) { gpr_free(handle); } + +static void uv_tc_on_alarm(grpc_exec_ctx *exec_ctx, void *acp, + grpc_error *error) { + int done; + grpc_uv_tcp_connect *connect = acp; + if (error == GRPC_ERROR_NONE) { + /* error == NONE implies that the timer ran out, and wasn't cancelled. If + it was cancelled, then the handler that cancelled it also should close + the handle, if applicable */ + uv_close((uv_handle_t *)connect->tcp_handle, tcp_close_callback); + } + done = (--connect->refs == 0); + if (done) { + uv_tcp_connect_cleanup(exec_ctx, connect); + } +} + +static void uv_tc_on_connect(uv_connect_t *req, int status) { + grpc_uv_tcp_connect *connect = req->data; + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; + grpc_error *error = GRPC_ERROR_NONE; + int done; + grpc_closure *closure = connect->closure; + grpc_timer_cancel(&exec_ctx, &connect->alarm); + if (status == 0) { + *connect->endpoint = grpc_tcp_create( + connect->tcp_handle, connect->resource_quota, connect->addr_name); + } else { + error = GRPC_ERROR_CREATE("Failed to connect to remote host"); + error = grpc_error_set_int(error, GRPC_ERROR_INT_ERRNO, -status); + error = + grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status)); + if (status == UV_ECANCELED) { + error = grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, + "Timeout occurred"); + // This should only happen if the handle is already closed + } else { + error = grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, + uv_strerror(status)); + uv_close((uv_handle_t *)connect->tcp_handle, tcp_close_callback); + } + } + done = (--connect->refs == 0); + if (done) { + uv_tcp_connect_cleanup(&exec_ctx, connect); + } + grpc_exec_ctx_sched(&exec_ctx, closure, error, NULL); + grpc_exec_ctx_finish(&exec_ctx); +} + +static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx, + grpc_closure *closure, grpc_endpoint **ep, + grpc_pollset_set *interested_parties, + const grpc_channel_args *channel_args, + const grpc_resolved_address *resolved_addr, + gpr_timespec deadline) { + grpc_uv_tcp_connect *connect; + grpc_resource_quota *resource_quota = grpc_resource_quota_create(NULL); + (void)channel_args; + (void)interested_parties; + + if (channel_args != NULL) { + for (size_t i = 0; i < channel_args->num_args; i++) { + if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) { + grpc_resource_quota_internal_unref(exec_ctx, resource_quota); + resource_quota = grpc_resource_quota_internal_ref( + channel_args->args[i].value.pointer.p); + } + } + } + + connect = gpr_malloc(sizeof(grpc_uv_tcp_connect)); + memset(connect, 0, sizeof(grpc_uv_tcp_connect)); + connect->closure = closure; + connect->endpoint = ep; + connect->tcp_handle = gpr_malloc(sizeof(uv_tcp_t)); + connect->addr_name = grpc_sockaddr_to_uri(resolved_addr); + connect->resource_quota = resource_quota; + uv_tcp_init(uv_default_loop(), connect->tcp_handle); + connect->connect_req.data = connect; + // TODO(murgatroid99): figure out what the return value here means + uv_tcp_connect(&connect->connect_req, connect->tcp_handle, + (const struct sockaddr *)resolved_addr->addr, + uv_tc_on_connect); + grpc_timer_init(exec_ctx, &connect->alarm, + gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC), + uv_tc_on_alarm, connect, gpr_now(GPR_CLOCK_MONOTONIC)); +} + +// overridden by api_fuzzer.c +void (*grpc_tcp_client_connect_impl)( + grpc_exec_ctx *exec_ctx, grpc_closure *closure, grpc_endpoint **ep, + grpc_pollset_set *interested_parties, const grpc_channel_args *channel_args, + const grpc_resolved_address *addr, + gpr_timespec deadline) = tcp_client_connect_impl; + +void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure, + grpc_endpoint **ep, + grpc_pollset_set *interested_parties, + const grpc_channel_args *channel_args, + const grpc_resolved_address *addr, + gpr_timespec deadline) { + grpc_tcp_client_connect_impl(exec_ctx, closure, ep, interested_parties, + channel_args, addr, deadline); +} + +#endif /* GRPC_UV */ |