| /* |
| * |
| * 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 "test/core/end2end/end2end_tests.h" |
| |
| #include <limits.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <grpc/byte_buffer.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/time.h> |
| #include <grpc/support/useful.h> |
| |
| #include "src/core/lib/channel/channel_stack_builder.h" |
| #include "src/core/lib/surface/channel_init.h" |
| #include "test/core/end2end/cq_verifier.h" |
| |
| enum { TIMEOUT = 200000 }; |
| |
| static bool g_enable_filter = false; |
| static gpr_mu g_mu; |
| static gpr_timespec g_client_latency; |
| static gpr_timespec g_server_latency; |
| |
| static void *tag(intptr_t t) { return (void *)t; } |
| |
| static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config, |
| const char *test_name, |
| grpc_channel_args *client_args, |
| grpc_channel_args *server_args) { |
| grpc_end2end_test_fixture f; |
| gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name); |
| f = config.create_fixture(client_args, server_args); |
| config.init_server(&f, server_args); |
| config.init_client(&f, client_args); |
| return f; |
| } |
| |
| static gpr_timespec n_seconds_time(int n) { |
| return grpc_timeout_seconds_to_deadline(n); |
| } |
| |
| static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); } |
| |
| static void drain_cq(grpc_completion_queue *cq) { |
| grpc_event ev; |
| do { |
| ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL); |
| } while (ev.type != GRPC_QUEUE_SHUTDOWN); |
| } |
| |
| static void shutdown_server(grpc_end2end_test_fixture *f) { |
| if (!f->server) return; |
| grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000)); |
| GPR_ASSERT(grpc_completion_queue_pluck( |
| f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL) |
| .type == GRPC_OP_COMPLETE); |
| grpc_server_destroy(f->server); |
| f->server = NULL; |
| } |
| |
| static void shutdown_client(grpc_end2end_test_fixture *f) { |
| if (!f->client) return; |
| grpc_channel_destroy(f->client); |
| f->client = NULL; |
| } |
| |
| static void end_test(grpc_end2end_test_fixture *f) { |
| shutdown_server(f); |
| shutdown_client(f); |
| |
| grpc_completion_queue_shutdown(f->cq); |
| drain_cq(f->cq); |
| grpc_completion_queue_destroy(f->cq); |
| } |
| |
| // Simple request via a server filter that saves the reported latency value. |
| static void test_request(grpc_end2end_test_config config) { |
| grpc_call *c; |
| grpc_call *s; |
| grpc_slice request_payload_slice = |
| grpc_slice_from_copied_string("hello world"); |
| grpc_byte_buffer *request_payload = |
| grpc_raw_byte_buffer_create(&request_payload_slice, 1); |
| gpr_timespec deadline = five_seconds_time(); |
| grpc_end2end_test_fixture f = |
| begin_test(config, "filter_latency", NULL, NULL); |
| cq_verifier *cqv = cq_verifier_create(f.cq); |
| grpc_op ops[6]; |
| grpc_op *op; |
| grpc_metadata_array initial_metadata_recv; |
| grpc_metadata_array trailing_metadata_recv; |
| grpc_metadata_array request_metadata_recv; |
| grpc_byte_buffer *request_payload_recv = NULL; |
| grpc_call_details call_details; |
| grpc_status_code status; |
| grpc_call_error error; |
| grpc_slice details; |
| int was_cancelled = 2; |
| |
| gpr_mu_lock(&g_mu); |
| g_client_latency = gpr_time_0(GPR_TIMESPAN); |
| g_server_latency = gpr_time_0(GPR_TIMESPAN); |
| gpr_mu_unlock(&g_mu); |
| const gpr_timespec start_time = gpr_now(GPR_CLOCK_MONOTONIC); |
| |
| c = grpc_channel_create_call( |
| f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, |
| grpc_slice_from_static_string("/foo"), |
| get_host_override_slice("foo.test.google.fr", config), deadline, NULL); |
| GPR_ASSERT(c); |
| |
| grpc_metadata_array_init(&initial_metadata_recv); |
| grpc_metadata_array_init(&trailing_metadata_recv); |
| grpc_metadata_array_init(&request_metadata_recv); |
| grpc_call_details_init(&call_details); |
| |
| memset(ops, 0, sizeof(ops)); |
| op = ops; |
| op->op = GRPC_OP_SEND_INITIAL_METADATA; |
| op->data.send_initial_metadata.count = 0; |
| op->data.send_initial_metadata.metadata = NULL; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| op->op = GRPC_OP_SEND_MESSAGE; |
| op->data.send_message.send_message = request_payload; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| op->op = GRPC_OP_RECV_INITIAL_METADATA; |
| op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| op->op = GRPC_OP_RECV_STATUS_ON_CLIENT; |
| op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv; |
| op->data.recv_status_on_client.status = &status; |
| op->data.recv_status_on_client.status_details = &details; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL); |
| GPR_ASSERT(GRPC_CALL_OK == error); |
| |
| error = |
| grpc_server_request_call(f.server, &s, &call_details, |
| &request_metadata_recv, f.cq, f.cq, tag(101)); |
| GPR_ASSERT(GRPC_CALL_OK == error); |
| |
| CQ_EXPECT_COMPLETION(cqv, tag(101), 1); |
| cq_verify(cqv); |
| |
| memset(ops, 0, sizeof(ops)); |
| op = ops; |
| op->op = GRPC_OP_SEND_INITIAL_METADATA; |
| op->data.send_initial_metadata.count = 0; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| op->op = GRPC_OP_SEND_STATUS_FROM_SERVER; |
| op->data.send_status_from_server.trailing_metadata_count = 0; |
| op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED; |
| grpc_slice status_string = grpc_slice_from_static_string("xyz"); |
| op->data.send_status_from_server.status_details = &status_string; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| op->op = GRPC_OP_RECV_CLOSE_ON_SERVER; |
| op->data.recv_close_on_server.cancelled = &was_cancelled; |
| op->flags = 0; |
| op->reserved = NULL; |
| op++; |
| error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL); |
| GPR_ASSERT(GRPC_CALL_OK == error); |
| |
| CQ_EXPECT_COMPLETION(cqv, tag(102), 1); |
| CQ_EXPECT_COMPLETION(cqv, tag(1), 1); |
| cq_verify(cqv); |
| |
| GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED); |
| GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz")); |
| |
| grpc_slice_unref(details); |
| grpc_metadata_array_destroy(&initial_metadata_recv); |
| grpc_metadata_array_destroy(&trailing_metadata_recv); |
| grpc_metadata_array_destroy(&request_metadata_recv); |
| grpc_call_details_destroy(&call_details); |
| |
| grpc_call_destroy(s); |
| grpc_call_destroy(c); |
| |
| cq_verifier_destroy(cqv); |
| |
| grpc_byte_buffer_destroy(request_payload); |
| grpc_byte_buffer_destroy(request_payload_recv); |
| |
| end_test(&f); |
| config.tear_down_data(&f); |
| |
| const gpr_timespec end_time = gpr_now(GPR_CLOCK_MONOTONIC); |
| const gpr_timespec max_latency = gpr_time_sub(end_time, start_time); |
| |
| // Perform checks after test tear-down |
| // Guards against the case that there's outstanding channel-related work on a |
| // call prior to verification |
| gpr_mu_lock(&g_mu); |
| GPR_ASSERT(gpr_time_cmp(max_latency, g_client_latency) >= 0); |
| GPR_ASSERT(gpr_time_cmp(gpr_time_0(GPR_TIMESPAN), g_client_latency) <= 0); |
| GPR_ASSERT(gpr_time_cmp(max_latency, g_server_latency) >= 0); |
| GPR_ASSERT(gpr_time_cmp(gpr_time_0(GPR_TIMESPAN), g_server_latency) <= 0); |
| // Server latency should always be smaller than client latency, however since |
| // we only calculate latency at destruction time, and that might mean that we |
| // need to wait for outstanding channel-related work, this isn't verifiable |
| // right now (the server MAY hold on to the call for longer than the client). |
| // GPR_ASSERT(gpr_time_cmp(g_server_latency, g_client_latency) < 0); |
| gpr_mu_unlock(&g_mu); |
| } |
| |
| /******************************************************************************* |
| * Test latency filter |
| */ |
| |
| static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx, |
| grpc_call_element *elem, |
| const grpc_call_element_args *args) { |
| return GRPC_ERROR_NONE; |
| } |
| |
| static void client_destroy_call_elem(grpc_exec_ctx *exec_ctx, |
| grpc_call_element *elem, |
| const grpc_call_final_info *final_info, |
| grpc_closure *ignored) { |
| gpr_mu_lock(&g_mu); |
| g_client_latency = final_info->stats.latency; |
| gpr_mu_unlock(&g_mu); |
| } |
| |
| static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx, |
| grpc_call_element *elem, |
| const grpc_call_final_info *final_info, |
| grpc_closure *ignored) { |
| gpr_mu_lock(&g_mu); |
| g_server_latency = final_info->stats.latency; |
| gpr_mu_unlock(&g_mu); |
| } |
| |
| static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx, |
| grpc_channel_element *elem, |
| grpc_channel_element_args *args) { |
| return GRPC_ERROR_NONE; |
| } |
| |
| static void destroy_channel_elem(grpc_exec_ctx *exec_ctx, |
| grpc_channel_element *elem) {} |
| |
| static const grpc_channel_filter test_client_filter = { |
| grpc_call_next_op, |
| grpc_channel_next_op, |
| 0, |
| init_call_elem, |
| grpc_call_stack_ignore_set_pollset_or_pollset_set, |
| client_destroy_call_elem, |
| 0, |
| init_channel_elem, |
| destroy_channel_elem, |
| grpc_call_next_get_peer, |
| grpc_channel_next_get_info, |
| "client_filter_latency"}; |
| |
| static const grpc_channel_filter test_server_filter = { |
| grpc_call_next_op, |
| grpc_channel_next_op, |
| 0, |
| init_call_elem, |
| grpc_call_stack_ignore_set_pollset_or_pollset_set, |
| server_destroy_call_elem, |
| 0, |
| init_channel_elem, |
| destroy_channel_elem, |
| grpc_call_next_get_peer, |
| grpc_channel_next_get_info, |
| "server_filter_latency"}; |
| |
| /******************************************************************************* |
| * Registration |
| */ |
| |
| static bool maybe_add_filter(grpc_exec_ctx *exec_ctx, |
| grpc_channel_stack_builder *builder, void *arg) { |
| grpc_channel_filter *filter = arg; |
| if (g_enable_filter) { |
| // Want to add the filter as close to the end as possible, to make |
| // sure that all of the filters work well together. However, we |
| // can't add it at the very end, because the connected channel filter |
| // must be the last one. So we add it right before the last one. |
| grpc_channel_stack_builder_iterator *it = |
| grpc_channel_stack_builder_create_iterator_at_last(builder); |
| GPR_ASSERT(grpc_channel_stack_builder_move_prev(it)); |
| const bool retval = |
| grpc_channel_stack_builder_add_filter_before(it, filter, NULL, NULL); |
| grpc_channel_stack_builder_iterator_destroy(it); |
| return retval; |
| } else { |
| return true; |
| } |
| } |
| |
| static void init_plugin(void) { |
| gpr_mu_init(&g_mu); |
| grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, |
| maybe_add_filter, |
| (void *)&test_client_filter); |
| grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX, |
| maybe_add_filter, |
| (void *)&test_client_filter); |
| grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, |
| maybe_add_filter, |
| (void *)&test_server_filter); |
| } |
| |
| static void destroy_plugin(void) { gpr_mu_destroy(&g_mu); } |
| |
| void filter_latency(grpc_end2end_test_config config) { |
| g_enable_filter = true; |
| test_request(config); |
| g_enable_filter = false; |
| } |
| |
| void filter_latency_pre_init(void) { |
| grpc_register_plugin(init_plugin, destroy_plugin); |
| } |