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/*
*
* Copyright 2015, 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 <grpc/support/log.h>
#include <grpc/support/sync.h>
#include <grpc/support/thd.h>
#include <grpc/support/time.h>
#include "test/core/end2end/cq_verifier.h"
static void *tag(intptr_t t) { return (void *)t; }
typedef struct {
gpr_event started;
grpc_channel *channel;
grpc_completion_queue *cq;
} child_events;
static void child_thread(void *arg) {
child_events *ce = arg;
grpc_event ev;
gpr_event_set(&ce->started, (void *)1);
gpr_log(GPR_DEBUG, "verifying");
ev = grpc_completion_queue_next(ce->cq, gpr_inf_future(GPR_CLOCK_MONOTONIC),
NULL);
GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
GPR_ASSERT(ev.tag == tag(1));
GPR_ASSERT(ev.success == 0);
}
static void test_connectivity(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
grpc_connectivity_state state;
cq_verifier *cqv = cq_verifier_create(f.cq);
child_events ce;
gpr_thd_options thdopt = gpr_thd_options_default();
gpr_thd_id thdid;
config.init_client(&f, NULL);
ce.channel = f.client;
ce.cq = f.cq;
gpr_event_init(&ce.started);
gpr_thd_options_set_joinable(&thdopt);
GPR_ASSERT(gpr_thd_new(&thdid, child_thread, &ce, &thdopt));
gpr_event_wait(&ce.started, gpr_inf_future(GPR_CLOCK_MONOTONIC));
/* channels should start life in IDLE, and stay there */
GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) ==
GRPC_CHANNEL_IDLE);
gpr_sleep_until(GRPC_TIMEOUT_MILLIS_TO_DEADLINE(100));
GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) ==
GRPC_CHANNEL_IDLE);
/* start watching for a change */
gpr_log(GPR_DEBUG, "watching");
grpc_channel_watch_connectivity_state(
f.client, GRPC_CHANNEL_IDLE, gpr_now(GPR_CLOCK_MONOTONIC), f.cq, tag(1));
/* eventually the child thread completion should trigger */
gpr_thd_join(thdid);
/* check that we're still in idle, and start connecting */
GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 1) ==
GRPC_CHANNEL_IDLE);
/* start watching for a change */
grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_IDLE,
GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
f.cq, tag(2));
/* and now the watch should trigger */
cq_expect_completion(cqv, tag(2), 1);
cq_verify(cqv);
state = grpc_channel_check_connectivity_state(f.client, 0);
GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
state == GRPC_CHANNEL_CONNECTING);
/* quickly followed by a transition to TRANSIENT_FAILURE */
grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_CONNECTING,
GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
f.cq, tag(3));
cq_expect_completion(cqv, tag(3), 1);
cq_verify(cqv);
state = grpc_channel_check_connectivity_state(f.client, 0);
GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
state == GRPC_CHANNEL_CONNECTING);
gpr_log(GPR_DEBUG, "*** STARTING SERVER ***");
/* now let's bring up a server to connect to */
config.init_server(&f, NULL);
gpr_log(GPR_DEBUG, "*** STARTED SERVER ***");
/* we'll go through some set of transitions (some might be missed), until
READY is reached */
while (state != GRPC_CHANNEL_READY) {
grpc_channel_watch_connectivity_state(
f.client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f.cq, tag(4));
cq_expect_completion(cqv, tag(4), 1);
cq_verify(cqv);
state = grpc_channel_check_connectivity_state(f.client, 0);
GPR_ASSERT(state == GRPC_CHANNEL_READY ||
state == GRPC_CHANNEL_CONNECTING ||
state == GRPC_CHANNEL_TRANSIENT_FAILURE);
}
/* bring down the server again */
/* we should go immediately to TRANSIENT_FAILURE */
gpr_log(GPR_DEBUG, "*** SHUTTING DOWN SERVER ***");
grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_READY,
GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
f.cq, tag(5));
grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
cq_expect_completion(cqv, tag(5), 1);
cq_expect_completion(cqv, tag(0xdead), 1);
cq_verify(cqv);
state = grpc_channel_check_connectivity_state(f.client, 0);
GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
state == GRPC_CHANNEL_CONNECTING || state == GRPC_CHANNEL_IDLE);
/* cleanup server */
grpc_server_destroy(f.server);
gpr_log(GPR_DEBUG, "*** SHUTDOWN SERVER ***");
grpc_channel_destroy(f.client);
grpc_completion_queue_shutdown(f.cq);
grpc_completion_queue_destroy(f.cq);
config.tear_down_data(&f);
cq_verifier_destroy(cqv);
}
void connectivity(grpc_end2end_test_config config) {
GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION);
test_connectivity(config);
}
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