diff options
author | ncteisen <ncteisen@gmail.com> | 2018-10-10 16:56:07 -0700 |
---|---|---|
committer | ncteisen <ncteisen@gmail.com> | 2018-10-10 17:00:44 -0700 |
commit | 17b6c04b8910dca993a52c24794dd78b26410068 (patch) | |
tree | 81aeb89566b8ed46d72f2ed490f67cf57665b17e /src/core/ext/filters/client_channel | |
parent | 73c99f890a42479bc82e2c0ab132a97cbcf8434a (diff) |
Intercept trailing in subchannel, not client_channel
Diffstat (limited to 'src/core/ext/filters/client_channel')
-rw-r--r-- | src/core/ext/filters/client_channel/client_channel.cc | 80 | ||||
-rw-r--r-- | src/core/ext/filters/client_channel/subchannel.cc | 70 |
2 files changed, 70 insertions, 80 deletions
diff --git a/src/core/ext/filters/client_channel/client_channel.cc b/src/core/ext/filters/client_channel/client_channel.cc index 35c8bb27ee..bb3ea400d1 100644 --- a/src/core/ext/filters/client_channel/client_channel.cc +++ b/src/core/ext/filters/client_channel/client_channel.cc @@ -933,11 +933,6 @@ typedef struct client_channel_call_data { grpc_closure pick_closure; grpc_closure pick_cancel_closure; - // state needed to support channelz interception of recv trailing metadata. - grpc_closure recv_trailing_metadata_ready_channelz; - grpc_closure* original_recv_trailing_metadata; - grpc_metadata_batch* recv_trailing_metadata; - grpc_polling_entity* pollent; bool pollent_added_to_interested_parties; @@ -999,8 +994,6 @@ static void start_internal_recv_trailing_metadata(grpc_call_element* elem); static void on_complete(void* arg, grpc_error* error); static void start_retriable_subchannel_batches(void* arg, grpc_error* ignored); static void start_pick_locked(void* arg, grpc_error* ignored); -static void maybe_intercept_recv_trailing_metadata_for_channelz( - grpc_call_element* elem, grpc_transport_stream_op_batch* batch); // // send op data caching @@ -1299,7 +1292,6 @@ static void pending_batches_resume(grpc_call_element* elem) { pending_batch* pending = &calld->pending_batches[i]; grpc_transport_stream_op_batch* batch = pending->batch; if (batch != nullptr) { - maybe_intercept_recv_trailing_metadata_for_channelz(elem, batch); batch->handler_private.extra_arg = calld->subchannel_call; GRPC_CLOSURE_INIT(&batch->handler_private.closure, resume_pending_batch_in_call_combiner, batch, @@ -1977,15 +1969,6 @@ static void recv_trailing_metadata_ready(void* arg, grpc_error* error) { batch_data->batch.payload->recv_trailing_metadata.recv_trailing_metadata; get_call_status(elem, md_batch, GRPC_ERROR_REF(error), &status, &server_pushback_md); - grpc_core::channelz::SubchannelNode* channelz_subchannel = - calld->pick.connected_subchannel->channelz_subchannel(); - if (channelz_subchannel != nullptr) { - if (status == GRPC_STATUS_OK) { - channelz_subchannel->RecordCallSucceeded(); - } else { - channelz_subchannel->RecordCallFailed(); - } - } if (grpc_client_channel_trace.enabled()) { gpr_log(GPR_INFO, "chand=%p calld=%p: call finished, status=%s", chand, calld, grpc_status_code_to_string(status)); @@ -2590,69 +2573,6 @@ static void start_retriable_subchannel_batches(void* arg, grpc_error* ignored) { } // -// Channelz -// - -static void recv_trailing_metadata_ready_channelz(void* arg, - grpc_error* error) { - grpc_call_element* elem = static_cast<grpc_call_element*>(arg); - channel_data* chand = static_cast<channel_data*>(elem->channel_data); - call_data* calld = static_cast<call_data*>(elem->call_data); - if (grpc_client_channel_trace.enabled()) { - gpr_log(GPR_INFO, - "chand=%p calld=%p: got recv_trailing_metadata_ready_channelz, " - "error=%s", - chand, calld, grpc_error_string(error)); - } - GPR_ASSERT(calld->recv_trailing_metadata != nullptr); - grpc_status_code status = GRPC_STATUS_OK; - grpc_metadata_batch* md_batch = calld->recv_trailing_metadata; - get_call_status(elem, md_batch, GRPC_ERROR_REF(error), &status, nullptr); - grpc_core::channelz::SubchannelNode* channelz_subchannel = - calld->pick.connected_subchannel->channelz_subchannel(); - GPR_ASSERT(channelz_subchannel != nullptr); - if (status == GRPC_STATUS_OK) { - channelz_subchannel->RecordCallSucceeded(); - } else { - channelz_subchannel->RecordCallFailed(); - } - calld->recv_trailing_metadata = nullptr; - GRPC_CLOSURE_RUN(calld->original_recv_trailing_metadata, error); -} - -// If channelz is enabled, intercept recv_trailing so that we may check the -// status and associate it to a subchannel. -// Returns true if callback was intercepted, false otherwise. -static void maybe_intercept_recv_trailing_metadata_for_channelz( - grpc_call_element* elem, grpc_transport_stream_op_batch* batch) { - call_data* calld = static_cast<call_data*>(elem->call_data); - // only intercept payloads with recv trailing. - if (!batch->recv_trailing_metadata) { - return; - } - // only add interceptor is channelz is enabled. - if (calld->pick.connected_subchannel->channelz_subchannel() == nullptr) { - return; - } - if (grpc_client_channel_trace.enabled()) { - gpr_log(GPR_INFO, - "calld=%p batch=%p: intercepting recv trailing for channelz", calld, - batch); - } - GRPC_CLOSURE_INIT(&calld->recv_trailing_metadata_ready_channelz, - recv_trailing_metadata_ready_channelz, elem, - grpc_schedule_on_exec_ctx); - // save some state needed for the interception callback. - GPR_ASSERT(calld->recv_trailing_metadata == nullptr); - calld->recv_trailing_metadata = - batch->payload->recv_trailing_metadata.recv_trailing_metadata; - calld->original_recv_trailing_metadata = - batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready; - batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready = - &calld->recv_trailing_metadata_ready_channelz; -} - -// // LB pick // diff --git a/src/core/ext/filters/client_channel/subchannel.cc b/src/core/ext/filters/client_channel/subchannel.cc index 4a668b0fa7..38d7a5a6e3 100644 --- a/src/core/ext/filters/client_channel/subchannel.cc +++ b/src/core/ext/filters/client_channel/subchannel.cc @@ -49,6 +49,8 @@ #include "src/core/lib/surface/channel.h" #include "src/core/lib/surface/channel_init.h" #include "src/core/lib/transport/connectivity_state.h" +#include "src/core/lib/transport/error_utils.h" +#include "src/core/lib/transport/status_metadata.h" #define INTERNAL_REF_BITS 16 #define STRONG_REF_MASK (~(gpr_atm)((1 << INTERNAL_REF_BITS) - 1)) @@ -144,6 +146,11 @@ struct grpc_subchannel { struct grpc_subchannel_call { grpc_core::ConnectedSubchannel* connection; grpc_closure* schedule_closure_after_destroy; + // state needed to support channelz interception of recv trailing metadata. + grpc_closure recv_trailing_metadata_ready_channelz; + grpc_closure* original_recv_trailing_metadata; + grpc_metadata_batch* recv_trailing_metadata; + grpc_millis deadline; }; #define SUBCHANNEL_CALL_TO_CALL_STACK(call) \ @@ -745,12 +752,74 @@ void grpc_subchannel_call_unref( GRPC_CALL_STACK_UNREF(SUBCHANNEL_CALL_TO_CALL_STACK(c), REF_REASON); } +// Sets *status and *server_pushback_md based on md_batch and error. +// Only sets *server_pushback_md if server_pushback_md != nullptr. +static void get_call_status(grpc_subchannel_call* call, + grpc_metadata_batch* md_batch, grpc_error* error, + grpc_status_code* status) { + if (error != GRPC_ERROR_NONE) { + grpc_error_get_status(error, call->deadline, status, nullptr, nullptr, + nullptr); + } else { + GPR_ASSERT(md_batch->idx.named.grpc_status != nullptr); + *status = + grpc_get_status_code_from_metadata(md_batch->idx.named.grpc_status->md); + } + GRPC_ERROR_UNREF(error); +} + +static void recv_trailing_metadata_ready_channelz(void* arg, + grpc_error* error) { + grpc_subchannel_call* call = static_cast<grpc_subchannel_call*>(arg); + GPR_ASSERT(call->recv_trailing_metadata != nullptr); + grpc_status_code status = GRPC_STATUS_OK; + grpc_metadata_batch* md_batch = call->recv_trailing_metadata; + get_call_status(call, md_batch, GRPC_ERROR_REF(error), &status); + grpc_core::channelz::SubchannelNode* channelz_subchannel = + call->connection->channelz_subchannel(); + GPR_ASSERT(channelz_subchannel != nullptr); + if (status == GRPC_STATUS_OK) { + channelz_subchannel->RecordCallSucceeded(); + } else { + channelz_subchannel->RecordCallFailed(); + } + call->recv_trailing_metadata = nullptr; + GRPC_CLOSURE_RUN(call->original_recv_trailing_metadata, + GRPC_ERROR_REF(error)); +} + +// If channelz is enabled, intercept recv_trailing so that we may check the +// status and associate it to a subchannel. +static void maybe_intercept_recv_trailing_metadata_for_channelz( + grpc_subchannel_call* call, grpc_transport_stream_op_batch* batch) { + // only intercept payloads with recv trailing. + if (!batch->recv_trailing_metadata) { + return; + } + // only add interceptor is channelz is enabled. + if (call->connection->channelz_subchannel() == nullptr) { + return; + } + GRPC_CLOSURE_INIT(&call->recv_trailing_metadata_ready_channelz, + recv_trailing_metadata_ready_channelz, call, + grpc_schedule_on_exec_ctx); + // save some state needed for the interception callback. + GPR_ASSERT(call->recv_trailing_metadata == nullptr); + call->recv_trailing_metadata = + batch->payload->recv_trailing_metadata.recv_trailing_metadata; + call->original_recv_trailing_metadata = + batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready; + batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready = + &call->recv_trailing_metadata_ready_channelz; +} + void grpc_subchannel_call_process_op(grpc_subchannel_call* call, grpc_transport_stream_op_batch* batch) { GPR_TIMER_SCOPE("grpc_subchannel_call_process_op", 0); grpc_call_stack* call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(call); grpc_call_element* top_elem = grpc_call_stack_element(call_stack, 0); GRPC_CALL_LOG_OP(GPR_INFO, top_elem, batch); + maybe_intercept_recv_trailing_metadata_for_channelz(call, batch); top_elem->filter->start_transport_stream_op_batch(top_elem, batch); } @@ -872,6 +941,7 @@ grpc_error* ConnectedSubchannel::CreateCall(const CallArgs& args, Ref(DEBUG_LOCATION, "subchannel_call"); connection.release(); // Ref is passed to the grpc_subchannel_call object. (*call)->connection = this; + (*call)->deadline = args.deadline; const grpc_call_element_args call_args = { callstk, /* call_stack */ nullptr, /* server_transport_data */ |