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-rw-r--r--test/core/end2end/end2end_nosec_tests.c8
-rw-r--r--test/core/end2end/end2end_tests.c8
-rwxr-xr-xtest/core/end2end/gen_build_yaml.py1
-rw-r--r--test/core/end2end/tests/binary_metadata.c38
-rw-r--r--test/core/end2end/tests/filter_latency.c361
5 files changed, 414 insertions, 2 deletions
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index 457c188ce5..663489082f 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -75,6 +75,8 @@ extern void filter_call_init_fails(grpc_end2end_test_config config);
extern void filter_call_init_fails_pre_init(void);
extern void filter_causes_close(grpc_end2end_test_config config);
extern void filter_causes_close_pre_init(void);
+extern void filter_latency(grpc_end2end_test_config config);
+extern void filter_latency_pre_init(void);
extern void graceful_server_shutdown(grpc_end2end_test_config config);
extern void graceful_server_shutdown_pre_init(void);
extern void high_initial_seqno(grpc_end2end_test_config config);
@@ -153,6 +155,7 @@ void grpc_end2end_tests_pre_init(void) {
empty_batch_pre_init();
filter_call_init_fails_pre_init();
filter_causes_close_pre_init();
+ filter_latency_pre_init();
graceful_server_shutdown_pre_init();
high_initial_seqno_pre_init();
hpack_size_pre_init();
@@ -207,6 +210,7 @@ void grpc_end2end_tests(int argc, char **argv,
empty_batch(config);
filter_call_init_fails(config);
filter_causes_close(config);
+ filter_latency(config);
graceful_server_shutdown(config);
high_initial_seqno(config);
hpack_size(config);
@@ -304,6 +308,10 @@ void grpc_end2end_tests(int argc, char **argv,
filter_causes_close(config);
continue;
}
+ if (0 == strcmp("filter_latency", argv[i])) {
+ filter_latency(config);
+ continue;
+ }
if (0 == strcmp("graceful_server_shutdown", argv[i])) {
graceful_server_shutdown(config);
continue;
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index dc2d68a486..25c7c62fde 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -77,6 +77,8 @@ extern void filter_call_init_fails(grpc_end2end_test_config config);
extern void filter_call_init_fails_pre_init(void);
extern void filter_causes_close(grpc_end2end_test_config config);
extern void filter_causes_close_pre_init(void);
+extern void filter_latency(grpc_end2end_test_config config);
+extern void filter_latency_pre_init(void);
extern void graceful_server_shutdown(grpc_end2end_test_config config);
extern void graceful_server_shutdown_pre_init(void);
extern void high_initial_seqno(grpc_end2end_test_config config);
@@ -156,6 +158,7 @@ void grpc_end2end_tests_pre_init(void) {
empty_batch_pre_init();
filter_call_init_fails_pre_init();
filter_causes_close_pre_init();
+ filter_latency_pre_init();
graceful_server_shutdown_pre_init();
high_initial_seqno_pre_init();
hpack_size_pre_init();
@@ -211,6 +214,7 @@ void grpc_end2end_tests(int argc, char **argv,
empty_batch(config);
filter_call_init_fails(config);
filter_causes_close(config);
+ filter_latency(config);
graceful_server_shutdown(config);
high_initial_seqno(config);
hpack_size(config);
@@ -312,6 +316,10 @@ void grpc_end2end_tests(int argc, char **argv,
filter_causes_close(config);
continue;
}
+ if (0 == strcmp("filter_latency", argv[i])) {
+ filter_latency(config);
+ continue;
+ }
if (0 == strcmp("graceful_server_shutdown", argv[i])) {
graceful_server_shutdown(config);
continue;
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 5f54b821a7..201a92a1fd 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -111,6 +111,7 @@ END2END_TESTS = {
'empty_batch': default_test_options,
'filter_causes_close': default_test_options,
'filter_call_init_fails': default_test_options,
+ 'filter_latency': default_test_options,
'graceful_server_shutdown': default_test_options._replace(cpu_cost=LOWCPU),
'hpack_size': default_test_options._replace(proxyable=False,
traceable=False),
diff --git a/test/core/end2end/tests/binary_metadata.c b/test/core/end2end/tests/binary_metadata.c
index bfdc7be544..004cc9e2af 100644
--- a/test/core/end2end/tests/binary_metadata.c
+++ b/test/core/end2end/tests/binary_metadata.c
@@ -237,7 +237,22 @@ static void test_request_response_with_metadata_and_payload(
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_OK;
- grpc_slice status_string = grpc_slice_from_static_string("xyz");
+ grpc_slice status_string = grpc_slice_from_static_string(
+ "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12"
+ "\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20\x21\x22\x23\x24"
+ "\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31\x32\x33\x34\x35\x36"
+ "\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40\x41\x42\x43\x44\x45\x46\x47\x48"
+ "\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a"
+ "\x5b\x5c\x5d\x5e\x5f\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c"
+ "\x6d\x6e\x6f\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e"
+ "\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
+ "\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2"
+ "\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4"
+ "\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6"
+ "\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8"
+ "\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea"
+ "\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc"
+ "\xfd\xfe\xff");
op->data.send_status_from_server.status_details = &status_string;
op->flags = 0;
op->reserved = NULL;
@@ -250,7 +265,26 @@ static void test_request_response_with_metadata_and_payload(
cq_verify(cqv);
GPR_ASSERT(status == GRPC_STATUS_OK);
- GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
+ GPR_ASSERT(
+ 0 ==
+ grpc_slice_str_cmp(
+ details,
+ "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10"
+ "\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20"
+ "\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30"
+ "\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40"
+ "\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50"
+ "\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60"
+ "\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70"
+ "\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80"
+ "\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
+ "\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0"
+ "\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0"
+ "\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0"
+ "\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0"
+ "\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
+ "\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0"
+ "\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"));
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
validate_host_override_string("foo.test.google.fr:1234", call_details.host,
config);
diff --git a/test/core/end2end/tests/filter_latency.c b/test/core/end2end/tests/filter_latency.c
new file mode 100644
index 0000000000..e5288d5ef7
--- /dev/null
+++ b/test/core/end2end/tests/filter_latency.c
@@ -0,0 +1,361 @@
+/*
+ *
+ * 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, "%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 = 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 = &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);
+
+ const gpr_timespec end_time = gpr_now(GPR_CLOCK_MONOTONIC);
+ const gpr_timespec max_latency = gpr_time_sub(end_time, start_time);
+
+ 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.
+ GPR_ASSERT(gpr_time_cmp(g_server_latency, g_client_latency) < 0);
+ gpr_mu_unlock(&g_mu);
+
+ 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);
+}
+
+/*******************************************************************************
+ * Test latency filter
+ */
+
+static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
+ grpc_call_element *elem,
+ 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,
+ void *and_free_memory) {
+ 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,
+ void *and_free_memory) {
+ gpr_mu_lock(&g_mu);
+ g_server_latency = final_info->stats.latency;
+ gpr_mu_unlock(&g_mu);
+}
+
+static void init_channel_elem(grpc_exec_ctx *exec_ctx,
+ grpc_channel_element *elem,
+ grpc_channel_element_args *args) {}
+
+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);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-07 09:02:49 +0000