/* Watch for a change in connectivity state.
Once the channel connectivity state is different from the last observed
state, tag will be enqueued on cq with success=1
If deadline expires BEFORE the state is changed, tag will be enqueued on
the completion queue with success=0 */
static VALUE grpc_rb_channel_watch_connectivity_state(VALUE self,
VALUE last_state,
VALUE cqueue,
VALUE deadline,
VALUE tag) {
grpc_rb_channel *wrapper = NULL;
grpc_channel *ch = NULL;
grpc_completion_queue *cq = NULL;
cq = grpc_rb_get_wrapped_completion_queue(cqueue);
TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
ch = wrapper->wrapped;
if (ch == NULL) {
rb_raise(rb_eRuntimeError, "closed!");
return Qnil;
}
grpc_channel_watch_connectivity_state(
ch,
(grpc_connectivity_state)NUM2LONG(last_state),
grpc_rb_time_timeval(deadline, /* absolute time */ 0),
cq,
ROBJECT(tag));
return Qnil;
}
// Needs to be called under global_connection_poolling_mu
static void grpc_rb_channel_try_register_connection_polling(
bg_watched_channel* bg) {
grpc_connectivity_state conn_state;
watch_state_op* op = NULL;
GPR_ASSERT(channel_polling_thread_started || abort_channel_polling);
if (bg->refcount == 0) {
GPR_ASSERT(bg->channel_destroyed);
bg_watched_channel_list_free_and_remove(bg);
return;
}
GPR_ASSERT(bg->refcount == 1);
if (bg->channel_destroyed || abort_channel_polling) {
return;
}
conn_state = grpc_channel_check_connectivity_state(bg->channel, 0);
if (conn_state == GRPC_CHANNEL_SHUTDOWN) {
return;
}
GPR_ASSERT(bg_watched_channel_list_lookup(bg));
// prevent bg from being free'd by GC while background thread is watching it
bg->refcount++;
op = gpr_zalloc(sizeof(watch_state_op));
op->op_type = CONTINUOUS_WATCH;
op->op.continuous_watch_callback_args.bg = bg;
grpc_channel_watch_connectivity_state(bg->channel, conn_state,
gpr_inf_future(GPR_CLOCK_REALTIME),
channel_polling_cq, op);
}
GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_watch_connectivity_state(
grpc_channel* channel, grpc_connectivity_state last_observed_state,
gpr_timespec deadline, grpc_completion_queue* cq,
grpcsharp_batch_context* ctx) {
grpc_channel_watch_connectivity_state(channel, last_observed_state, deadline,
cq, ctx);
}
static void* wait_for_watch_state_op_complete_without_gvl(void* arg) {
watch_state_stack* stack = (watch_state_stack*)arg;
watch_state_op* op = NULL;
void* success = (void*)0;
gpr_mu_lock(&global_connection_polling_mu);
// its unsafe to do a "watch" after "channel polling abort" because the cq has
// been shut down.
if (abort_channel_polling || stack->bg_wrapped->channel_destroyed) {
gpr_mu_unlock(&global_connection_polling_mu);
return (void*)0;
}
op = gpr_zalloc(sizeof(watch_state_op));
op->op_type = WATCH_STATE_API;
grpc_channel_watch_connectivity_state(stack->bg_wrapped->channel,
stack->last_state, stack->deadline,
channel_polling_cq, op);
while (!op->op.api_callback_args.called_back) {
gpr_cv_wait(&global_connection_polling_cv, &global_connection_polling_mu,
gpr_inf_future(GPR_CLOCK_REALTIME));
}
if (op->op.api_callback_args.success) {
success = (void*)1;
}
gpr_free(op);
gpr_mu_unlock(&global_connection_polling_mu);
return success;
}
// Either start polling channel connection state or signal that it's free to
// destroy.
// Not safe to call while a channel's connection state is polled.
static void grpc_rb_channel_try_register_connection_polling(
grpc_rb_channel *wrapper) {
grpc_connectivity_state conn_state;
gpr_timespec sleep_time = gpr_time_add(
gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(20, GPR_TIMESPAN));
GPR_ASSERT(wrapper);
GPR_ASSERT(wrapper->wrapped);
gpr_mu_lock(&wrapper->channel_mu);
if (wrapper->request_safe_destroy) {
wrapper->safe_to_destroy = 1;
gpr_cv_broadcast(&wrapper->channel_cv);
gpr_mu_unlock(&wrapper->channel_mu);
return;
}
gpr_mu_lock(&global_connection_polling_mu);
conn_state = grpc_channel_check_connectivity_state(wrapper->wrapped, 0);
if (conn_state != wrapper->current_connectivity_state) {
wrapper->current_connectivity_state = conn_state;
gpr_cv_broadcast(&wrapper->channel_cv);
}
// avoid posting work to the channel polling cq if it's been shutdown
if (!abort_channel_polling && conn_state != GRPC_CHANNEL_SHUTDOWN) {
grpc_channel_watch_connectivity_state(
wrapper->wrapped, conn_state, sleep_time, channel_polling_cq, wrapper);
} else {
wrapper->safe_to_destroy = 1;
gpr_cv_broadcast(&wrapper->channel_cv);
}
gpr_mu_unlock(&global_connection_polling_mu);
gpr_mu_unlock(&wrapper->channel_mu);
}
/**
* Watch the connectivity state of the channel until it changed
* @param long The previous connectivity state of the channel
* @param Timeval The deadline this function should wait until
* @return bool If the connectivity state changes from last_state
* before deadline
*/
PHP_METHOD(Channel, watchConnectivityState) {
wrapped_grpc_channel *channel = Z_WRAPPED_GRPC_CHANNEL_P(getThis());
zend_long last_state;
zval *deadline_obj;
/* "lO" == 1 long 1 object */
#ifndef FAST_ZPP
if (zend_parse_parameters(ZEND_NUM_ARGS(), "lO",
&last_state, &deadline_obj, grpc_ce_timeval) == FAILURE) {
zend_throw_exception(spl_ce_InvalidArgumentException,
"watchConnectivityState expects 1 long 1 timeval", 1);
return;
}
#else
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_LONG(last_state)
Z_PARAM_OBJECT_OF_CLASS(deadline_obj, grpc_ce_timeval)
ZEND_PARSE_PARAMETERS_END();
#endif
wrapped_grpc_timeval *deadline = Z_WRAPPED_GRPC_TIMEVAL_P(deadline_obj);
grpc_channel_watch_connectivity_state(
channel->wrapped, (grpc_connectivity_state)last_state,
deadline->wrapped, completion_queue, NULL);
grpc_event event = grpc_completion_queue_pluck(
completion_queue, NULL,
gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
RETURN_BOOL(event.success);
}
static void test_ping(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
cq_verifier *cqv = cq_verifier_create(f.cq);
grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
int i;
config.init_client(&f, NULL, NULL);
config.init_server(&f, NULL);
grpc_channel_ping(f.client, f.cq, tag(0), NULL);
CQ_EXPECT_COMPLETION(cqv, tag(0), 0);
/* check that we're still in idle, and start connecting */
GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 1) ==
GRPC_CHANNEL_IDLE);
/* 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(99));
CQ_EXPECT_COMPLETION(cqv, tag(99), 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);
}
for (i = 1; i <= 5; i++) {
grpc_channel_ping(f.client, f.cq, tag(i), NULL);
CQ_EXPECT_COMPLETION(cqv, tag(i), 1);
cq_verify(cqv);
}
grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
cq_verify(cqv);
/* cleanup server */
grpc_server_destroy(f.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);
}
static void test_ping() {
grpc_channel *client;
request_data rdata;
servers_fixture *f;
cq_verifier *cqv;
grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
const size_t num_servers = 1;
int i;
rdata.call_details = gpr_malloc(sizeof(grpc_call_details) * num_servers);
f = setup_servers("127.0.0.1", &rdata, num_servers);
cqv = cq_verifier_create(f->cq);
client = create_client(f);
grpc_channel_ping(client, f->cq, tag(0), NULL);
cq_expect_completion(cqv, tag(0), 0);
/* check that we're still in idle, and start connecting */
GPR_ASSERT(grpc_channel_check_connectivity_state(client, 1) ==
GRPC_CHANNEL_IDLE);
/* 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(
client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f->cq, tag(99));
cq_expect_completion(cqv, tag(99), 1);
cq_verify(cqv);
state = grpc_channel_check_connectivity_state(client, 0);
GPR_ASSERT(state == GRPC_CHANNEL_READY ||
state == GRPC_CHANNEL_CONNECTING ||
state == GRPC_CHANNEL_TRANSIENT_FAILURE);
}
for (i = 1; i <= 5; i++) {
grpc_channel_ping(client, f->cq, tag(i), NULL);
cq_expect_completion(cqv, tag(i), 1);
cq_verify(cqv);
}
gpr_free(rdata.call_details);
grpc_channel_destroy(client);
teardown_servers(f);
cq_verifier_destroy(cqv);
}
void create_loop_destroy(void *addr) {
for (int i = 0; i < NUM_OUTER_LOOPS; ++i) {
grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
grpc_channel *chan = grpc_insecure_channel_create((char *)addr, NULL, NULL);
for (int j = 0; j < NUM_INNER_LOOPS; ++j) {
gpr_timespec later_time = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(DELAY_MILLIS);
grpc_connectivity_state state =
grpc_channel_check_connectivity_state(chan, 1);
grpc_channel_watch_connectivity_state(chan, state, later_time, cq, NULL);
gpr_timespec poll_time = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(POLL_MILLIS);
GPR_ASSERT(grpc_completion_queue_next(cq, poll_time, NULL).type ==
GRPC_OP_COMPLETE);
}
grpc_channel_destroy(chan);
grpc_completion_queue_destroy(cq);
}
}
void create_loop_destroy(void *addr) {
for (int i = 0; i < NUM_OUTER_LOOPS; ++i) {
grpc_completion_queue *cq = grpc_completion_queue_create_for_next(NULL);
grpc_channel *chan = grpc_insecure_channel_create((char *)addr, NULL, NULL);
for (int j = 0; j < NUM_INNER_LOOPS; ++j) {
gpr_timespec later_time =
grpc_timeout_milliseconds_to_deadline(DELAY_MILLIS);
grpc_connectivity_state state =
grpc_channel_check_connectivity_state(chan, 1);
grpc_channel_watch_connectivity_state(chan, state, later_time, cq, NULL);
gpr_timespec poll_time =
grpc_timeout_milliseconds_to_deadline(POLL_MILLIS);
GPR_ASSERT(grpc_completion_queue_next(cq, poll_time, NULL).type ==
GRPC_OP_COMPLETE);
/* check that the watcher from "watch state" was free'd */
GPR_ASSERT(grpc_channel_num_external_connectivity_watchers(chan) == 0);
}
grpc_channel_destroy(chan);
grpc_completion_queue_destroy(cq);
}
}
void watches_with_short_timeouts(void *addr) {
for (int i = 0; i < NUM_OUTER_LOOPS_SHORT_TIMEOUTS; ++i) {
grpc_completion_queue *cq = grpc_completion_queue_create_for_next(NULL);
grpc_channel *chan = grpc_insecure_channel_create((char *)addr, NULL, NULL);
for (int j = 0; j < NUM_INNER_LOOPS_SHORT_TIMEOUTS; ++j) {
gpr_timespec later_time =
grpc_timeout_milliseconds_to_deadline(DELAY_MILLIS_SHORT_TIMEOUTS);
grpc_connectivity_state state =
grpc_channel_check_connectivity_state(chan, 0);
GPR_ASSERT(state == GRPC_CHANNEL_IDLE);
grpc_channel_watch_connectivity_state(chan, state, later_time, cq, NULL);
gpr_timespec poll_time =
grpc_timeout_milliseconds_to_deadline(POLL_MILLIS_SHORT_TIMEOUTS);
grpc_event ev = grpc_completion_queue_next(cq, poll_time, NULL);
GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
GPR_ASSERT(ev.success == false);
/* check that the watcher from "watch state" was free'd */
GPR_ASSERT(grpc_channel_num_external_connectivity_watchers(chan) == 0);
}
grpc_channel_destroy(chan);
grpc_completion_queue_destroy(cq);
}
}
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);
}
// This test launches a minimal TLS server on a separate thread and then
// establishes a TLS handshake via the core library to the server. The TLS
// server validates ALPN aspects of the handshake and supplies the protocol
// specified in the server_alpn_preferred argument to the client.
static bool client_ssl_test(char *server_alpn_preferred) {
bool success = true;
grpc_init();
// Find a port we can bind to. Retries added to handle flakes in port server
// and port picking.
int port = -1;
int server_socket = -1;
int socket_retries = 10;
while (server_socket == -1 && socket_retries-- > 0) {
port = grpc_pick_unused_port_or_die();
server_socket = create_socket(port);
if (server_socket == -1) {
sleep(1);
}
}
GPR_ASSERT(server_socket > 0);
// Launch the TLS server thread.
gpr_thd_options thdopt = gpr_thd_options_default();
gpr_thd_id thdid;
gpr_thd_options_set_joinable(&thdopt);
server_args args = {.socket = server_socket,
.alpn_preferred = server_alpn_preferred};
GPR_ASSERT(gpr_thd_new(&thdid, server_thread, &args, &thdopt));
// Load key pair and establish client SSL credentials.
grpc_ssl_pem_key_cert_pair pem_key_cert_pair;
gpr_slice ca_slice, cert_slice, key_slice;
GPR_ASSERT(GRPC_LOG_IF_ERROR("load_file",
grpc_load_file(SSL_CA_PATH, 1, &ca_slice)));
GPR_ASSERT(GRPC_LOG_IF_ERROR("load_file",
grpc_load_file(SSL_CERT_PATH, 1, &cert_slice)));
GPR_ASSERT(GRPC_LOG_IF_ERROR("load_file",
grpc_load_file(SSL_KEY_PATH, 1, &key_slice)));
const char *ca_cert = (const char *)GPR_SLICE_START_PTR(ca_slice);
pem_key_cert_pair.private_key = (const char *)GPR_SLICE_START_PTR(key_slice);
pem_key_cert_pair.cert_chain = (const char *)GPR_SLICE_START_PTR(cert_slice);
grpc_channel_credentials *ssl_creds =
grpc_ssl_credentials_create(ca_cert, &pem_key_cert_pair, NULL);
// Establish a channel pointing at the TLS server. Since the gRPC runtime is
// lazy, this won't necessarily establish a connection yet.
char *target;
gpr_asprintf(&target, "127.0.0.1:%d", port);
grpc_arg ssl_name_override = {GRPC_ARG_STRING,
GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,
{"foo.test.google.fr"}};
grpc_channel_args grpc_args;
grpc_args.num_args = 1;
grpc_args.args = &ssl_name_override;
grpc_channel *channel =
grpc_secure_channel_create(ssl_creds, target, &grpc_args, NULL);
GPR_ASSERT(channel);
gpr_free(target);
// Initially the channel will be idle, the
// grpc_channel_check_connectivity_state triggers an attempt to connect.
GPR_ASSERT(grpc_channel_check_connectivity_state(
channel, 1 /* try_to_connect */) == GRPC_CHANNEL_IDLE);
// Wait a bounded number of times for the channel to be ready. When the
// channel is ready, the initial TLS handshake will have successfully
// completed and we know that the client's ALPN list satisfied the server.
int retries = 10;
grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
while (state != GRPC_CHANNEL_READY && retries-- > 0) {
grpc_channel_watch_connectivity_state(
channel, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), cq, NULL);
gpr_timespec cq_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5);
grpc_event ev = grpc_completion_queue_next(cq, cq_deadline, NULL);
GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
state =
grpc_channel_check_connectivity_state(channel, 0 /* try_to_connect */);
}
grpc_completion_queue_destroy(cq);
if (retries < 0) {
success = false;
}
grpc_channel_destroy(channel);
grpc_channel_credentials_release(ssl_creds);
gpr_slice_unref(cert_slice);
gpr_slice_unref(key_slice);
gpr_slice_unref(ca_slice);
gpr_thd_join(thdid);
grpc_shutdown();
return success;
}
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
grpc_test_only_set_metadata_hash_seed(0);
if (squelch) gpr_set_log_function(dont_log);
input_stream inp = {data, data + size};
grpc_resolve_address = my_resolve_address;
grpc_tcp_client_connect_impl = my_tcp_client_connect;
gpr_now_impl = now_impl;
grpc_init();
GPR_ASSERT(g_channel == NULL);
GPR_ASSERT(g_server == NULL);
bool server_shutdown = false;
int pending_server_shutdowns = 0;
int pending_channel_watches = 0;
int pending_pings = 0;
g_active_call = new_call(NULL, ROOT);
grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
while (!is_eof(&inp) || g_channel != NULL || g_server != NULL ||
pending_channel_watches > 0 || pending_pings > 0 ||
g_active_call->type != ROOT || g_active_call->next != g_active_call) {
if (is_eof(&inp)) {
if (g_channel != NULL) {
grpc_channel_destroy(g_channel);
g_channel = NULL;
}
if (g_server != NULL) {
if (!server_shutdown) {
grpc_server_shutdown_and_notify(
g_server, cq, create_validator(assert_success_and_decrement,
&pending_server_shutdowns));
server_shutdown = true;
pending_server_shutdowns++;
} else if (pending_server_shutdowns == 0) {
grpc_server_destroy(g_server);
g_server = NULL;
}
}
call_state *s = g_active_call;
do {
if (s->type != PENDING_SERVER && s->call != NULL) {
s = destroy_call(s);
} else {
s = s->next;
}
} while (s != g_active_call);
g_now = gpr_time_add(g_now, gpr_time_from_seconds(1, GPR_TIMESPAN));
}
switch (next_byte(&inp)) {
// terminate on bad bytes
default:
end(&inp);
break;
// tickle completion queue
case 0: {
grpc_event ev = grpc_completion_queue_next(
cq, gpr_inf_past(GPR_CLOCK_REALTIME), NULL);
switch (ev.type) {
case GRPC_OP_COMPLETE: {
validator *v = ev.tag;
v->validate(v->arg, ev.success);
gpr_free(v);
break;
}
case GRPC_QUEUE_TIMEOUT:
break;
case GRPC_QUEUE_SHUTDOWN:
abort();
break;
}
break;
}
// increment global time
case 1: {
g_now = gpr_time_add(
g_now, gpr_time_from_micros(read_uint32(&inp), GPR_TIMESPAN));
break;
}
// create an insecure channel
case 2: {
if (g_channel == NULL) {
char *target = read_string(&inp);
char *target_uri;
gpr_asprintf(&target_uri, "dns:%s", target);
grpc_channel_args *args = read_args(&inp);
g_channel = grpc_insecure_channel_create(target_uri, args, NULL);
GPR_ASSERT(g_channel != NULL);
grpc_channel_args_destroy(args);
gpr_free(target_uri);
gpr_free(target);
} else {
end(&inp);
}
break;
}
// destroy a channel
case 3: {
if (g_channel != NULL) {
grpc_channel_destroy(g_channel);
g_channel = NULL;
} else {
end(&inp);
}
break;
}
// bring up a server
case 4: {
if (g_server == NULL) {
grpc_channel_args *args = read_args(&inp);
g_server = grpc_server_create(args, NULL);
GPR_ASSERT(g_server != NULL);
grpc_channel_args_destroy(args);
grpc_server_register_completion_queue(g_server, cq, NULL);
grpc_server_start(g_server);
server_shutdown = false;
GPR_ASSERT(pending_server_shutdowns == 0);
} else {
end(&inp);
}
}
// begin server shutdown
case 5: {
if (g_server != NULL) {
grpc_server_shutdown_and_notify(
g_server, cq, create_validator(assert_success_and_decrement,
&pending_server_shutdowns));
pending_server_shutdowns++;
server_shutdown = true;
} else {
end(&inp);
}
break;
}
// cancel all calls if shutdown
case 6: {
if (g_server != NULL && server_shutdown) {
grpc_server_cancel_all_calls(g_server);
} else {
end(&inp);
}
break;
}
// destroy server
case 7: {
if (g_server != NULL && server_shutdown &&
pending_server_shutdowns == 0) {
grpc_server_destroy(g_server);
g_server = NULL;
} else {
end(&inp);
}
break;
}
// check connectivity
case 8: {
if (g_channel != NULL) {
uint8_t try_to_connect = next_byte(&inp);
if (try_to_connect == 0 || try_to_connect == 1) {
grpc_channel_check_connectivity_state(g_channel, try_to_connect);
} else {
end(&inp);
}
} else {
end(&inp);
}
break;
}
// watch connectivity
case 9: {
if (g_channel != NULL) {
grpc_connectivity_state st =
grpc_channel_check_connectivity_state(g_channel, 0);
if (st != GRPC_CHANNEL_FATAL_FAILURE) {
gpr_timespec deadline = gpr_time_add(
gpr_now(GPR_CLOCK_REALTIME),
gpr_time_from_micros(read_uint32(&inp), GPR_TIMESPAN));
grpc_channel_watch_connectivity_state(
g_channel, st, deadline, cq,
create_validator(validate_connectivity_watch,
make_connectivity_watch(
deadline, &pending_channel_watches)));
pending_channel_watches++;
}
} else {
end(&inp);
}
break;
}
// create a call
case 10: {
bool ok = true;
if (g_channel == NULL) ok = false;
grpc_call *parent_call = NULL;
if (g_active_call->type != ROOT) {
if (g_active_call->call == NULL || g_active_call->type == CLIENT) {
end(&inp);
break;
}
parent_call = g_active_call->call;
}
uint32_t propagation_mask = read_uint32(&inp);
char *method = read_string(&inp);
char *host = read_string(&inp);
gpr_timespec deadline =
gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
gpr_time_from_micros(read_uint32(&inp), GPR_TIMESPAN));
if (ok) {
call_state *cs = new_call(g_active_call, CLIENT);
cs->call =
grpc_channel_create_call(g_channel, parent_call, propagation_mask,
cq, method, host, deadline, NULL);
} else {
end(&inp);
}
gpr_free(method);
gpr_free(host);
break;
}
// switch the 'current' call
case 11: {
g_active_call = g_active_call->next;
break;
}
// queue some ops on a call
case 12: {
if (g_active_call->type == PENDING_SERVER ||
g_active_call->type == ROOT || g_active_call->call == NULL) {
end(&inp);
break;
}
size_t num_ops = next_byte(&inp);
if (num_ops > 6) {
end(&inp);
break;
}
grpc_op *ops = gpr_malloc(sizeof(grpc_op) * num_ops);
bool ok = true;
size_t i;
grpc_op *op;
for (i = 0; i < num_ops; i++) {
op = &ops[i];
switch (next_byte(&inp)) {
default:
/* invalid value */
op->op = (grpc_op_type)-1;
ok = false;
break;
case GRPC_OP_SEND_INITIAL_METADATA:
op->op = GRPC_OP_SEND_INITIAL_METADATA;
read_metadata(&inp, &op->data.send_initial_metadata.count,
&op->data.send_initial_metadata.metadata,
g_active_call);
break;
case GRPC_OP_SEND_MESSAGE:
op->op = GRPC_OP_SEND_MESSAGE;
op->data.send_message = read_message(&inp);
break;
case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
break;
case GRPC_OP_SEND_STATUS_FROM_SERVER:
op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
read_metadata(
&inp,
&op->data.send_status_from_server.trailing_metadata_count,
&op->data.send_status_from_server.trailing_metadata,
g_active_call);
op->data.send_status_from_server.status = next_byte(&inp);
op->data.send_status_from_server.status_details =
read_string(&inp);
break;
case GRPC_OP_RECV_INITIAL_METADATA:
op->op = GRPC_OP_RECV_INITIAL_METADATA;
op->data.recv_initial_metadata =
&g_active_call->recv_initial_metadata;
break;
case GRPC_OP_RECV_MESSAGE:
op->op = GRPC_OP_RECV_MESSAGE;
op->data.recv_message = &g_active_call->recv_message;
break;
case GRPC_OP_RECV_STATUS_ON_CLIENT:
op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
op->data.recv_status_on_client.status = &g_active_call->status;
op->data.recv_status_on_client.trailing_metadata =
&g_active_call->recv_trailing_metadata;
op->data.recv_status_on_client.status_details =
&g_active_call->recv_status_details;
op->data.recv_status_on_client.status_details_capacity =
&g_active_call->recv_status_details_capacity;
break;
case GRPC_OP_RECV_CLOSE_ON_SERVER:
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled =
&g_active_call->cancelled;
break;
}
op->reserved = NULL;
op->flags = read_uint32(&inp);
}
if (ok) {
validator *v = create_validator(finished_batch, g_active_call);
g_active_call->pending_ops++;
grpc_call_error error =
grpc_call_start_batch(g_active_call->call, ops, num_ops, v, NULL);
if (error != GRPC_CALL_OK) {
v->validate(v->arg, false);
gpr_free(v);
}
} else {
end(&inp);
}
for (i = 0; i < num_ops; i++) {
op = &ops[i];
switch (op->op) {
case GRPC_OP_SEND_INITIAL_METADATA:
break;
case GRPC_OP_SEND_MESSAGE:
grpc_byte_buffer_destroy(op->data.send_message);
break;
case GRPC_OP_SEND_STATUS_FROM_SERVER:
gpr_free((void *)op->data.send_status_from_server.status_details);
break;
case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
case GRPC_OP_RECV_INITIAL_METADATA:
case GRPC_OP_RECV_MESSAGE:
case GRPC_OP_RECV_STATUS_ON_CLIENT:
case GRPC_OP_RECV_CLOSE_ON_SERVER:
break;
}
}
gpr_free(ops);
break;
}
// cancel current call
case 13: {
if (g_active_call->type != ROOT && g_active_call->call != NULL) {
grpc_call_cancel(g_active_call->call, NULL);
} else {
end(&inp);
}
break;
}
// get a calls peer
case 14: {
if (g_active_call->type != ROOT && g_active_call->call != NULL) {
free_non_null(grpc_call_get_peer(g_active_call->call));
} else {
end(&inp);
}
break;
}
// get a channels target
case 15: {
if (g_channel != NULL) {
free_non_null(grpc_channel_get_target(g_channel));
} else {
end(&inp);
}
break;
}
// send a ping on a channel
case 16: {
if (g_channel != NULL) {
pending_pings++;
grpc_channel_ping(g_channel, cq,
create_validator(decrement, &pending_pings), NULL);
} else {
end(&inp);
}
break;
}
// enable a tracer
case 17: {
char *tracer = read_string(&inp);
grpc_tracer_set_enabled(tracer, 1);
gpr_free(tracer);
break;
}
// disable a tracer
case 18: {
char *tracer = read_string(&inp);
grpc_tracer_set_enabled(tracer, 0);
gpr_free(tracer);
break;
}
// request a server call
case 19: {
if (g_server == NULL) {
end(&inp);
break;
}
call_state *cs = new_call(g_active_call, PENDING_SERVER);
cs->pending_ops++;
validator *v = create_validator(finished_request_call, cs);
grpc_call_error error =
grpc_server_request_call(g_server, &cs->call, &cs->call_details,
&cs->recv_initial_metadata, cq, cq, v);
if (error != GRPC_CALL_OK) {
v->validate(v->arg, false);
gpr_free(v);
}
break;
}
// destroy a call
case 20: {
if (g_active_call->type != ROOT &&
g_active_call->type != PENDING_SERVER &&
g_active_call->call != NULL) {
destroy_call(g_active_call);
} else {
end(&inp);
}
break;
}
}
}
GPR_ASSERT(g_channel == NULL);
GPR_ASSERT(g_server == NULL);
GPR_ASSERT(g_active_call->type == ROOT);
GPR_ASSERT(g_active_call->next == g_active_call);
gpr_free(g_active_call);
grpc_completion_queue_shutdown(cq);
GPR_ASSERT(
grpc_completion_queue_next(cq, gpr_inf_past(GPR_CLOCK_REALTIME), NULL)
.type == GRPC_QUEUE_SHUTDOWN);
grpc_completion_queue_destroy(cq);
grpc_shutdown();
return 0;
}