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/*
*
* 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 <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include <string.h>
#include "src/core/lib/iomgr/resolve_address.h"
#include "src/core/lib/iomgr/sockaddr.h"
#include "test/core/end2end/cq_verifier.h"
#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
static void *tag(intptr_t i) { return (void *)i; }
static gpr_mu g_mu;
static int g_resolve_port = -1;
static grpc_error *(*iomgr_resolve_address)(const char *name,
const char *default_port,
grpc_resolved_addresses **addrs);
static void set_resolve_port(int port) {
gpr_mu_lock(&g_mu);
g_resolve_port = port;
gpr_mu_unlock(&g_mu);
}
static grpc_error *my_resolve_address(const char *name, const char *addr,
grpc_resolved_addresses **addrs) {
if (0 != strcmp(name, "test")) {
return iomgr_resolve_address(name, addr, addrs);
}
gpr_mu_lock(&g_mu);
if (g_resolve_port < 0) {
gpr_mu_unlock(&g_mu);
return GRPC_ERROR_CREATE("Forced Failure");
} else {
*addrs = gpr_malloc(sizeof(**addrs));
(*addrs)->naddrs = 1;
(*addrs)->addrs = gpr_malloc(sizeof(*(*addrs)->addrs));
memset((*addrs)->addrs, 0, sizeof(*(*addrs)->addrs));
struct sockaddr_in *sa = (struct sockaddr_in *)(*addrs)->addrs[0].addr;
sa->sin_family = AF_INET;
sa->sin_addr.s_addr = htonl(0x7f000001);
sa->sin_port = htons((uint16_t)g_resolve_port);
(*addrs)->addrs[0].len = sizeof(*sa);
gpr_mu_unlock(&g_mu);
return GRPC_ERROR_NONE;
}
}
int main(int argc, char **argv) {
grpc_completion_queue *cq;
cq_verifier *cqv;
grpc_op ops[6];
grpc_op *op;
grpc_test_init(argc, argv);
gpr_mu_init(&g_mu);
iomgr_resolve_address = grpc_blocking_resolve_address;
grpc_blocking_resolve_address = my_resolve_address;
grpc_init();
int was_cancelled1;
int was_cancelled2;
grpc_metadata_array trailing_metadata_recv1;
grpc_metadata_array request_metadata1;
grpc_call_details request_details1;
grpc_status_code status1;
char *details1 = NULL;
size_t details_capacity1 = 0;
grpc_metadata_array_init(&trailing_metadata_recv1);
grpc_metadata_array_init(&request_metadata1);
grpc_call_details_init(&request_details1);
grpc_metadata_array trailing_metadata_recv2;
grpc_metadata_array request_metadata2;
grpc_call_details request_details2;
grpc_status_code status2;
char *details2 = NULL;
size_t details_capacity2 = 0;
grpc_metadata_array_init(&trailing_metadata_recv2);
grpc_metadata_array_init(&request_metadata2);
grpc_call_details_init(&request_details2);
cq = grpc_completion_queue_create(NULL);
cqv = cq_verifier_create(cq);
/* reserve two ports */
int port1 = grpc_pick_unused_port_or_die();
int port2 = grpc_pick_unused_port_or_die();
char *addr;
/* create a channel that picks first amongst the servers */
grpc_channel *chan = grpc_insecure_channel_create("test", NULL, NULL);
/* and an initial call to them */
grpc_call *call1 = grpc_channel_create_call(
chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/foo", "127.0.0.1",
GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20), NULL);
/* send initial metadata to probe connectivity */
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++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call1, ops,
(size_t)(op - ops),
tag(0x101), NULL));
/* and receive status to probe termination */
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv1;
op->data.recv_status_on_client.status = &status1;
op->data.recv_status_on_client.status_details = &details1;
op->data.recv_status_on_client.status_details_capacity = &details_capacity1;
op->flags = 0;
op->reserved = NULL;
op++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call1, ops,
(size_t)(op - ops),
tag(0x102), NULL));
/* bring a server up on the first port */
grpc_server *server1 = grpc_server_create(NULL, NULL);
gpr_asprintf(&addr, "127.0.0.1:%d", port1);
grpc_server_add_insecure_http2_port(server1, addr);
grpc_server_register_completion_queue(server1, cq, NULL);
gpr_free(addr);
grpc_server_start(server1);
/* request a call to the server */
grpc_call *server_call1;
GPR_ASSERT(GRPC_CALL_OK ==
grpc_server_request_call(server1, &server_call1, &request_details1,
&request_metadata1, cq, cq, tag(0x301)));
set_resolve_port(port1);
/* first call should now start */
CQ_EXPECT_COMPLETION(cqv, tag(0x101), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0x301), 1);
cq_verify(cqv);
GPR_ASSERT(GRPC_CHANNEL_READY ==
grpc_channel_check_connectivity_state(chan, 0));
grpc_channel_watch_connectivity_state(chan, GRPC_CHANNEL_READY,
gpr_inf_future(GPR_CLOCK_REALTIME), cq,
tag(0x9999));
/* listen for close on the server call to probe for finishing */
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled1;
op->flags = 0;
op++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(server_call1, ops,
(size_t)(op - ops),
tag(0x302), NULL));
/* shutdown first server:
* we should see a connectivity change and then nothing */
set_resolve_port(-1);
grpc_server_shutdown_and_notify(server1, cq, tag(0xdead1));
CQ_EXPECT_COMPLETION(cqv, tag(0x9999), 1);
cq_verify(cqv);
cq_verify_empty(cqv);
/* and a new call: should go through to server2 when we start it */
grpc_call *call2 = grpc_channel_create_call(
chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/foo", "127.0.0.1",
GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20), NULL);
/* send initial metadata to probe connectivity */
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++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call2, ops,
(size_t)(op - ops),
tag(0x201), NULL));
/* and receive status to probe termination */
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv2;
op->data.recv_status_on_client.status = &status2;
op->data.recv_status_on_client.status_details = &details2;
op->data.recv_status_on_client.status_details_capacity = &details_capacity2;
op->flags = 0;
op->reserved = NULL;
op++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call2, ops,
(size_t)(op - ops),
tag(0x202), NULL));
/* and bring up second server */
set_resolve_port(port2);
grpc_server *server2 = grpc_server_create(NULL, NULL);
gpr_asprintf(&addr, "127.0.0.1:%d", port2);
grpc_server_add_insecure_http2_port(server2, addr);
grpc_server_register_completion_queue(server2, cq, NULL);
gpr_free(addr);
grpc_server_start(server2);
/* request a call to the server */
grpc_call *server_call2;
GPR_ASSERT(GRPC_CALL_OK ==
grpc_server_request_call(server2, &server_call2, &request_details2,
&request_metadata2, cq, cq, tag(0x401)));
/* second call should now start */
CQ_EXPECT_COMPLETION(cqv, tag(0x201), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0x401), 1);
cq_verify(cqv);
/* listen for close on the server call to probe for finishing */
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled2;
op->flags = 0;
op++;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(server_call2, ops,
(size_t)(op - ops),
tag(0x402), NULL));
/* shutdown second server: we should see nothing */
grpc_server_shutdown_and_notify(server2, cq, tag(0xdead2));
cq_verify_empty(cqv);
grpc_call_cancel(call1, NULL);
grpc_call_cancel(call2, NULL);
/* now everything else should finish */
CQ_EXPECT_COMPLETION(cqv, tag(0x102), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0x202), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0x302), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0x402), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0xdead1), 1);
CQ_EXPECT_COMPLETION(cqv, tag(0xdead2), 1);
cq_verify(cqv);
grpc_call_destroy(call1);
grpc_call_destroy(call2);
grpc_call_destroy(server_call1);
grpc_call_destroy(server_call2);
grpc_server_destroy(server1);
grpc_server_destroy(server2);
grpc_channel_destroy(chan);
grpc_metadata_array_destroy(&trailing_metadata_recv1);
grpc_metadata_array_destroy(&request_metadata1);
grpc_call_details_destroy(&request_details1);
gpr_free(details1);
grpc_metadata_array_destroy(&trailing_metadata_recv2);
grpc_metadata_array_destroy(&request_metadata2);
grpc_call_details_destroy(&request_details2);
gpr_free(details2);
cq_verifier_destroy(cqv);
grpc_completion_queue_destroy(cq);
grpc_shutdown();
gpr_mu_destroy(&g_mu);
return 0;
}
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