static void channel_op(grpc_channel_element *elem,
grpc_channel_element *from_elem, grpc_channel_op *op) {
channel_data *chand = elem->channel_data;
grpc_server *server = chand->server;
switch (op->type) {
case GRPC_ACCEPT_CALL:
/* create a call */
grpc_call_create(chand->channel, NULL,
op->data.accept_call.transport_server_data, NULL, 0,
gpr_inf_future);
break;
case GRPC_TRANSPORT_CLOSED:
/* if the transport is closed for a server channel, we destroy the
channel */
gpr_mu_lock(&server->mu);
server_ref(server);
destroy_channel(chand);
gpr_mu_unlock(&server->mu);
server_unref(server);
break;
case GRPC_TRANSPORT_GOAWAY:
gpr_slice_unref(op->data.goaway.message);
break;
default:
GPR_ASSERT(op->dir == GRPC_CALL_DOWN);
grpc_channel_next_op(elem, op);
break;
}
}
static void destroy_channel(channel_data *chand) {
if (is_channel_orphaned(chand)) return;
GPR_ASSERT(chand->server != NULL);
orphan_channel(chand);
server_ref(chand->server);
grpc_iomgr_add_callback(finish_destroy_channel, chand);
}
static void maybe_finish_shutdown(grpc_exec_ctx *exec_ctx,
grpc_server *server) {
size_t i;
if (!gpr_atm_acq_load(&server->shutdown_flag) || server->shutdown_published) {
return;
}
kill_pending_work_locked(exec_ctx, server,
GRPC_ERROR_CREATE("Server Shutdown"));
if (server->root_channel_data.next != &server->root_channel_data ||
server->listeners_destroyed < num_listeners(server)) {
if (gpr_time_cmp(gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME),
server->last_shutdown_message_time),
gpr_time_from_seconds(1, GPR_TIMESPAN)) >= 0) {
server->last_shutdown_message_time = gpr_now(GPR_CLOCK_REALTIME);
gpr_log(GPR_DEBUG,
"Waiting for %d channels and %d/%d listeners to be destroyed"
" before shutting down server",
num_channels(server),
num_listeners(server) - server->listeners_destroyed,
num_listeners(server));
}
return;
}
server->shutdown_published = 1;
for (i = 0; i < server->num_shutdown_tags; i++) {
server_ref(server);
grpc_cq_end_op(exec_ctx, server->shutdown_tags[i].cq,
server->shutdown_tags[i].tag, GRPC_ERROR_NONE,
done_shutdown_event, server,
&server->shutdown_tags[i].completion);
}
}
/* initializes server record but doesn't start connecting */
void server_connect_init(SERVER_REC *server)
{
const char *str;
g_return_if_fail(server != NULL);
MODULE_DATA_INIT(server);
server->type = module_get_uniq_id("SERVER", 0);
server_ref(server);
server->nick = g_strdup(server->connrec->nick);
if (server->connrec->username == NULL || *server->connrec->username == '\0') {
g_free_not_null(server->connrec->username);
str = g_get_user_name();
if (*str == '\0') str = "unknown";
server->connrec->username = g_strdup(str);
}
if (server->connrec->realname == NULL || *server->connrec->realname == '\0') {
g_free_not_null(server->connrec->realname);
str = g_get_real_name();
if (*str == '\0') str = server->connrec->username;
server->connrec->realname = g_strdup(str);
}
server->tag = server_create_tag(server->connrec);
server->connect_tag = -1;
}
static void fail_call(grpc_exec_ctx *exec_ctx, grpc_server *server,
requested_call *rc) {
*rc->call = NULL;
rc->initial_metadata->count = 0;
server_ref(server);
grpc_cq_end_op(exec_ctx, rc->cq_for_notification, rc->tag, 0,
done_request_event, rc, &rc->completion);
}
static void fail_call(grpc_exec_ctx *exec_ctx, grpc_server *server,
size_t cq_idx, requested_call *rc, grpc_error *error) {
*rc->call = NULL;
rc->initial_metadata->count = 0;
GPR_ASSERT(error != GRPC_ERROR_NONE);
server_ref(server);
grpc_cq_end_op(exec_ctx, server->cqs[cq_idx], rc->tag, error,
done_request_event, rc, &rc->completion);
}
static void destroy_channel(channel_data *chand) {
if (is_channel_orphaned(chand)) return;
GPR_ASSERT(chand->server != NULL);
orphan_channel(chand);
server_ref(chand->server);
maybe_finish_shutdown(chand->server);
chand->finish_destroy_channel_closure.cb = finish_destroy_channel;
chand->finish_destroy_channel_closure.cb_arg = chand;
grpc_iomgr_add_callback(&chand->finish_destroy_channel_closure);
}
struct condef *condef_new (struct server *s) {
struct condef *con;
con = g_malloc0 (sizeof (struct condef));
con->s = s;
server_ref (s);
return con;
}
static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand) {
if (is_channel_orphaned(chand)) return;
GPR_ASSERT(chand->server != NULL);
orphan_channel(chand);
server_ref(chand->server);
maybe_finish_shutdown(exec_ctx, chand->server);
chand->finish_destroy_channel_closure.cb = finish_destroy_channel;
chand->finish_destroy_channel_closure.cb_arg = chand;
grpc_exec_ctx_enqueue(exec_ctx, &chand->finish_destroy_channel_closure, 1);
}
static void publish_registered_or_batch(grpc_exec_ctx *exec_ctx, void *prc,
bool success) {
requested_call *rc = prc;
grpc_call *call = *rc->call;
grpc_call_element *elem =
grpc_call_stack_element(grpc_call_get_call_stack(call), 0);
call_data *calld = elem->call_data;
channel_data *chand = elem->channel_data;
server_ref(chand->server);
grpc_cq_end_op(exec_ctx, calld->cq_new, rc->tag, success, done_request_event,
rc, &rc->completion);
GRPC_CALL_INTERNAL_UNREF(exec_ctx, call, "server");
}
static void test_server_destroy_flood(ServerDestroyFloodData *fixture, const void *data)
{
SERVER_REC *server; /* = g_new0(IRC_SERVER_REC, 1); */
CHAT_PROTOCOL_REC *proto;
SERVER_CONNECT_REC *conn;
GLogLevelFlags loglev;
g_test_bug("796");
/* for the purpose of this exercise, we are ignoring the
errors of g_hash_table_lookup failure */
loglev = g_log_set_always_fatal(G_LOG_FATAL_MASK);
proto = chat_protocol_find("IRC");
conn = server_create_conn(proto->id, "localhost", 0, "", "", "user");
server = proto->server_init_connect(conn);
server->session_reconnect = TRUE;
server->tag = g_strdup("testserver");
g_test_message("created server: %p", server);
/* we skip some initialisations that would try to send data */
/* irc_servers_deinit(); */
irc_session_deinit();
irc_irc_deinit();
server_connect_finished(server);
/* make up for the skipped session init */
irc_server_init_bare_minimum(IRC_SERVER(server));
irc_irc_init();
irc_session_init();
/* irc_servers_init(); */
/* simulate failing irc_server_send_data() */
server->connection_lost = TRUE;
/*
chat_completion_deinit();
fe_messages_deinit();
irc_notifylist_deinit();
*/
server_ref(server);
signal_emit("event privmsg", 4, server, "#someroom :test message", "nick", "user@host");
server_unref(server);
g_log_set_always_fatal(loglev);
}
static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
grpc_call_element_args *args) {
call_data *calld = elem->call_data;
channel_data *chand = elem->channel_data;
memset(calld, 0, sizeof(call_data));
calld->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
calld->call = grpc_call_from_top_element(elem);
gpr_mu_init(&calld->mu_state);
grpc_closure_init(&calld->server_on_recv_initial_metadata,
server_on_recv_initial_metadata, elem);
server_ref(chand->server);
}
static void init_call_elem(grpc_call_element *elem,
const void *server_transport_data) {
call_data *calld = elem->call_data;
channel_data *chand = elem->channel_data;
memset(calld, 0, sizeof(call_data));
calld->deadline = gpr_inf_future;
calld->call = grpc_call_from_top_element(elem);
gpr_mu_lock(&chand->server->mu);
call_list_join(&chand->server->lists[ALL_CALLS], calld, ALL_CALLS);
gpr_mu_unlock(&chand->server->mu);
server_ref(chand->server);
}
static void fail_call(grpc_exec_ctx *exec_ctx, grpc_server *server,
requested_call *rc) {
*rc->call = NULL;
switch (rc->type) {
case BATCH_CALL:
rc->data.batch.initial_metadata->count = 0;
break;
case REGISTERED_CALL:
rc->data.registered.initial_metadata->count = 0;
break;
}
server_ref(server);
grpc_cq_end_op(exec_ctx, rc->cq_for_notification, rc->tag, 0,
done_request_event, rc, &rc->completion);
}
static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
const void *server_transport_data,
grpc_transport_stream_op *initial_op) {
call_data *calld = elem->call_data;
channel_data *chand = elem->channel_data;
memset(calld, 0, sizeof(call_data));
calld->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
calld->call = grpc_call_from_top_element(elem);
gpr_mu_init(&calld->mu_state);
grpc_closure_init(&calld->server_on_recv, server_on_recv, elem);
server_ref(chand->server);
if (initial_op) server_mutate_op(elem, initial_op);
}
static void client_attach (pid_t pid, int fd, struct server *s) {
struct running_client *cl;
cl = g_malloc0 (sizeof (struct running_client));
cl->pid = pid;
cl->fd = fd;
cl->tag = gdk_input_add (cl->fd, GDK_INPUT_READ | GDK_INPUT_EXCEPTION,
(GdkInputFunction) client_input_callback, cl);
cl->server = s;
server_ref (s);
debug (3, "client attached (pid:%d)", cl->pid);
clients = g_slist_append (clients, cl);
}
static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand) {
if (is_channel_orphaned(chand)) return;
GPR_ASSERT(chand->server != NULL);
orphan_channel(chand);
server_ref(chand->server);
maybe_finish_shutdown(exec_ctx, chand->server);
chand->finish_destroy_channel_closure.cb = finish_destroy_channel;
chand->finish_destroy_channel_closure.cb_arg = chand;
grpc_transport_op op;
memset(&op, 0, sizeof(op));
op.set_accept_stream = true;
op.on_consumed = &chand->finish_destroy_channel_closure;
grpc_channel_next_op(exec_ctx,
grpc_channel_stack_element(
grpc_channel_get_channel_stack(chand->channel), 0),
&op);
}
static void sig_window_press(Window *window, const char *word,
GtkTextTag *tag, GdkEventButton *event)
{
NickMenuData *data;
Server *server;
if (event->button != 3)
return;
server = tag_get_server(tag);
if (server == NULL)
return;
data = g_new(NickMenuData, 1);
data->server = server;
data->channel = CHANNEL(active_win->active);
data->nick = g_strdup(word);
server_ref(server);
gui_menu_nick_popup(get_nicks, data, event->button);
}
static void publish_call(grpc_exec_ctx *exec_ctx, grpc_server *server,
call_data *calld, size_t cq_idx, requested_call *rc) {
grpc_call_set_completion_queue(exec_ctx, calld->call, rc->cq_bound_to_call);
grpc_call *call = calld->call;
*rc->call = call;
calld->cq_new = server->cqs[cq_idx];
GPR_SWAP(grpc_metadata_array, *rc->initial_metadata, calld->initial_metadata);
switch (rc->type) {
case BATCH_CALL:
GPR_ASSERT(calld->host != NULL);
GPR_ASSERT(calld->path != NULL);
cpstr(&rc->data.batch.details->host,
&rc->data.batch.details->host_capacity, calld->host);
cpstr(&rc->data.batch.details->method,
&rc->data.batch.details->method_capacity, calld->path);
rc->data.batch.details->deadline = calld->deadline;
rc->data.batch.details->flags =
0 | (calld->recv_idempotent_request
? GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST
: 0);
break;
case REGISTERED_CALL:
*rc->data.registered.deadline = calld->deadline;
if (rc->data.registered.optional_payload) {
*rc->data.registered.optional_payload = calld->payload;
}
break;
default:
GPR_UNREACHABLE_CODE(return );
}
grpc_call_element *elem =
grpc_call_stack_element(grpc_call_get_call_stack(call), 0);
channel_data *chand = elem->channel_data;
server_ref(chand->server);
grpc_cq_end_op(exec_ctx, calld->cq_new, rc->tag, GRPC_ERROR_NONE,
done_request_event, rc, &rc->completion);
}
grpc_transport_setup_result grpc_server_setup_transport(
grpc_server *s, grpc_transport *transport,
grpc_channel_filter const **extra_filters, size_t num_extra_filters,
grpc_mdctx *mdctx) {
size_t num_filters = s->channel_filter_count + num_extra_filters + 1;
grpc_channel_filter const **filters =
gpr_malloc(sizeof(grpc_channel_filter *) * num_filters);
size_t i;
size_t num_registered_methods;
size_t alloc;
registered_method *rm;
channel_registered_method *crm;
grpc_channel *channel;
channel_data *chand;
grpc_mdstr *host;
grpc_mdstr *method;
gpr_uint32 hash;
gpr_uint32 slots;
gpr_uint32 probes;
gpr_uint32 max_probes = 0;
grpc_transport_setup_result result;
for (i = 0; i < s->channel_filter_count; i++) {
filters[i] = s->channel_filters[i];
}
for (; i < s->channel_filter_count + num_extra_filters; i++) {
filters[i] = extra_filters[i - s->channel_filter_count];
}
filters[i] = &grpc_connected_channel_filter;
for (i = 0; i < s->cq_count; i++) {
grpc_transport_add_to_pollset(transport, grpc_cq_pollset(s->cqs[i]));
}
channel = grpc_channel_create_from_filters(filters, num_filters,
s->channel_args, mdctx, 0);
chand = (channel_data *)grpc_channel_stack_element(
grpc_channel_get_channel_stack(channel), 0)
->channel_data;
chand->server = s;
server_ref(s);
chand->channel = channel;
num_registered_methods = 0;
for (rm = s->registered_methods; rm; rm = rm->next) {
num_registered_methods++;
}
/* build a lookup table phrased in terms of mdstr's in this channels context
to quickly find registered methods */
if (num_registered_methods > 0) {
slots = 2 * num_registered_methods;
alloc = sizeof(channel_registered_method) * slots;
chand->registered_methods = gpr_malloc(alloc);
memset(chand->registered_methods, 0, alloc);
for (rm = s->registered_methods; rm; rm = rm->next) {
host = rm->host ? grpc_mdstr_from_string(mdctx, rm->host) : NULL;
method = grpc_mdstr_from_string(mdctx, rm->method);
hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
for (probes = 0; chand->registered_methods[(hash + probes) % slots]
.server_registered_method != NULL;
probes++)
;
if (probes > max_probes) max_probes = probes;
crm = &chand->registered_methods[(hash + probes) % slots];
crm->server_registered_method = rm;
crm->host = host;
crm->method = method;
}
chand->registered_method_slots = slots;
chand->registered_method_max_probes = max_probes;
}
result = grpc_connected_channel_bind_transport(
grpc_channel_get_channel_stack(channel), transport);
gpr_mu_lock(&s->mu);
chand->next = &s->root_channel_data;
chand->prev = chand->next->prev;
chand->next->prev = chand->prev->next = chand;
gpr_mu_unlock(&s->mu);
gpr_free(filters);
return result;
}
void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
grpc_transport *transport,
grpc_channel_filter const **extra_filters,
size_t num_extra_filters,
const grpc_channel_args *args) {
size_t num_filters = s->channel_filter_count + num_extra_filters + 1;
grpc_channel_filter const **filters =
gpr_malloc(sizeof(grpc_channel_filter *) * num_filters);
size_t i;
size_t num_registered_methods;
size_t alloc;
registered_method *rm;
channel_registered_method *crm;
grpc_channel *channel;
channel_data *chand;
grpc_mdstr *host;
grpc_mdstr *method;
uint32_t hash;
size_t slots;
uint32_t probes;
uint32_t max_probes = 0;
grpc_transport_op op;
for (i = 0; i < s->channel_filter_count; i++) {
filters[i] = s->channel_filters[i];
}
for (; i < s->channel_filter_count + num_extra_filters; i++) {
filters[i] = extra_filters[i - s->channel_filter_count];
}
filters[i] = &grpc_connected_channel_filter;
for (i = 0; i < s->cq_count; i++) {
memset(&op, 0, sizeof(op));
op.bind_pollset = grpc_cq_pollset(s->cqs[i]);
grpc_transport_perform_op(exec_ctx, transport, &op);
}
channel = grpc_channel_create_from_filters(exec_ctx, NULL, filters,
num_filters, args, 0);
chand = (channel_data *)grpc_channel_stack_element(
grpc_channel_get_channel_stack(channel), 0)->channel_data;
chand->server = s;
server_ref(s);
chand->channel = channel;
num_registered_methods = 0;
for (rm = s->registered_methods; rm; rm = rm->next) {
num_registered_methods++;
}
/* build a lookup table phrased in terms of mdstr's in this channels context
to quickly find registered methods */
if (num_registered_methods > 0) {
slots = 2 * num_registered_methods;
alloc = sizeof(channel_registered_method) * slots;
chand->registered_methods = gpr_malloc(alloc);
memset(chand->registered_methods, 0, alloc);
for (rm = s->registered_methods; rm; rm = rm->next) {
host = rm->host ? grpc_mdstr_from_string(rm->host) : NULL;
method = grpc_mdstr_from_string(rm->method);
hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
for (probes = 0; chand->registered_methods[(hash + probes) % slots]
.server_registered_method != NULL;
probes++)
;
if (probes > max_probes) max_probes = probes;
crm = &chand->registered_methods[(hash + probes) % slots];
crm->server_registered_method = rm;
crm->host = host;
crm->method = method;
}
GPR_ASSERT(slots <= UINT32_MAX);
chand->registered_method_slots = (uint32_t)slots;
chand->registered_method_max_probes = max_probes;
}
grpc_connected_channel_bind_transport(grpc_channel_get_channel_stack(channel),
transport);
gpr_mu_lock(&s->mu_global);
chand->next = &s->root_channel_data;
chand->prev = chand->next->prev;
chand->next->prev = chand->prev->next = chand;
gpr_mu_unlock(&s->mu_global);
gpr_free((void *)filters);
GRPC_CHANNEL_INTERNAL_REF(channel, "connectivity");
memset(&op, 0, sizeof(op));
op.set_accept_stream = accept_stream;
op.set_accept_stream_user_data = chand;
op.on_connectivity_state_change = &chand->channel_connectivity_changed;
op.connectivity_state = &chand->connectivity_state;
op.disconnect = gpr_atm_acq_load(&s->shutdown_flag) != 0;
grpc_transport_perform_op(exec_ctx, transport, &op);
}
void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
grpc_transport *transport,
grpc_pollset *accepting_pollset,
const grpc_channel_args *args) {
size_t num_registered_methods;
size_t alloc;
registered_method *rm;
channel_registered_method *crm;
grpc_channel *channel;
channel_data *chand;
grpc_mdstr *host;
grpc_mdstr *method;
uint32_t hash;
size_t slots;
uint32_t probes;
uint32_t max_probes = 0;
grpc_transport_op op;
channel =
grpc_channel_create(exec_ctx, NULL, args, GRPC_SERVER_CHANNEL, transport);
chand = (channel_data *)grpc_channel_stack_element(
grpc_channel_get_channel_stack(channel), 0)
->channel_data;
chand->server = s;
server_ref(s);
chand->channel = channel;
size_t cq_idx;
grpc_completion_queue *accepting_cq = grpc_cq_from_pollset(accepting_pollset);
for (cq_idx = 0; cq_idx < s->cq_count; cq_idx++) {
if (s->cqs[cq_idx] == accepting_cq) break;
}
if (cq_idx == s->cq_count) {
/* completion queue not found: pick a random one to publish new calls to */
cq_idx = (size_t)rand() % s->cq_count;
}
chand->cq_idx = cq_idx;
num_registered_methods = 0;
for (rm = s->registered_methods; rm; rm = rm->next) {
num_registered_methods++;
}
/* build a lookup table phrased in terms of mdstr's in this channels context
to quickly find registered methods */
if (num_registered_methods > 0) {
slots = 2 * num_registered_methods;
alloc = sizeof(channel_registered_method) * slots;
chand->registered_methods = gpr_malloc(alloc);
memset(chand->registered_methods, 0, alloc);
for (rm = s->registered_methods; rm; rm = rm->next) {
host = rm->host ? grpc_mdstr_from_string(rm->host) : NULL;
method = grpc_mdstr_from_string(rm->method);
hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
for (probes = 0; chand->registered_methods[(hash + probes) % slots]
.server_registered_method != NULL;
probes++)
;
if (probes > max_probes) max_probes = probes;
crm = &chand->registered_methods[(hash + probes) % slots];
crm->server_registered_method = rm;
crm->flags = rm->flags;
crm->host = host;
crm->method = method;
}
GPR_ASSERT(slots <= UINT32_MAX);
chand->registered_method_slots = (uint32_t)slots;
chand->registered_method_max_probes = max_probes;
}
gpr_mu_lock(&s->mu_global);
chand->next = &s->root_channel_data;
chand->prev = chand->next->prev;
chand->next->prev = chand->prev->next = chand;
gpr_mu_unlock(&s->mu_global);
GRPC_CHANNEL_INTERNAL_REF(channel, "connectivity");
memset(&op, 0, sizeof(op));
op.set_accept_stream = true;
op.set_accept_stream_fn = accept_stream;
op.set_accept_stream_user_data = chand;
op.on_connectivity_state_change = &chand->channel_connectivity_changed;
op.connectivity_state = &chand->connectivity_state;
if (gpr_atm_acq_load(&s->shutdown_flag) != 0) {
op.disconnect_with_error = GRPC_ERROR_CREATE("Server shutdown");
}
grpc_transport_perform_op(exec_ctx, transport, &op);
}
