void grpc_channel_internal_unref(grpc_exec_ctx *exec_ctx, grpc_channel *channel,
const char *reason) {
gpr_log(GPR_DEBUG, "CHANNEL: unref %p %d -> %d [%s]", channel,
channel->refs.count, channel->refs.count - 1, reason);
#else
void grpc_channel_internal_unref(grpc_exec_ctx *exec_ctx,
grpc_channel *channel) {
#endif
if (gpr_unref(&channel->refs)) {
destroy_channel(exec_ctx, channel);
}
}
void grpc_channel_destroy(grpc_channel *channel) {
grpc_transport_op op;
grpc_channel_element *elem;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_API_TRACE("grpc_channel_destroy(channel=%p)", 1, (channel));
memset(&op, 0, sizeof(op));
op.disconnect = 1;
elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
elem->filter->start_transport_op(&exec_ctx, elem, &op);
GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, channel, "channel");
grpc_exec_ctx_finish(&exec_ctx);
}
static void destroy_channel(grpc_exec_ctx *exec_ctx, grpc_channel *channel) {
size_t i;
grpc_channel_stack_destroy(exec_ctx, CHANNEL_STACK_FROM_CHANNEL(channel));
for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) {
GRPC_MDELEM_UNREF(channel->grpc_status_elem[i]);
}
GRPC_MDSTR_UNREF(channel->grpc_status_string);
GRPC_MDSTR_UNREF(channel->grpc_compression_algorithm_string);
GRPC_MDSTR_UNREF(channel->grpc_encodings_accepted_by_peer_string);
GRPC_MDSTR_UNREF(channel->grpc_message_string);
GRPC_MDSTR_UNREF(channel->path_string);
GRPC_MDSTR_UNREF(channel->authority_string);
while (channel->registered_calls) {
registered_call *rc = channel->registered_calls;
channel->registered_calls = rc->next;
GRPC_MDELEM_UNREF(rc->path);
if (rc->authority) {
GRPC_MDELEM_UNREF(rc->authority);
}
gpr_free(rc);
}
if (channel->default_authority != NULL) {
GRPC_MDELEM_UNREF(channel->default_authority);
}
grpc_mdctx_unref(channel->metadata_context);
gpr_mu_destroy(&channel->registered_call_mu);
gpr_free(channel->target);
gpr_free(channel);
}
void grpc_channel_get_info(grpc_channel *channel,
const grpc_channel_info *channel_info) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_channel_element *elem =
grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
elem->filter->get_channel_info(&exec_ctx, elem, channel_info);
grpc_exec_ctx_finish(&exec_ctx);
}
grpc_channel *grpc_channel_create_from_filters(
const char *target, const grpc_channel_filter **filters, size_t num_filters,
const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client) {
size_t i;
size_t size =
sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
grpc_channel *channel = gpr_malloc(size);
memset(channel, 0, sizeof(*channel));
channel->target = gpr_strdup(target);
GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
channel->is_client = is_client;
/* decremented by grpc_channel_destroy */
gpr_ref_init(&channel->refs, 1);
channel->metadata_context = mdctx;
channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status", 0);
channel->grpc_compression_algorithm_string =
grpc_mdstr_from_string(mdctx, "grpc-encoding", 0);
channel->grpc_message_string = grpc_mdstr_from_string(mdctx, "grpc-message", 0);
for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) {
char buf[GPR_LTOA_MIN_BUFSIZE];
gpr_ltoa(i, buf);
channel->grpc_status_elem[i] = grpc_mdelem_from_metadata_strings(
mdctx, GRPC_MDSTR_REF(channel->grpc_status_string),
grpc_mdstr_from_string(mdctx, buf, 0));
}
channel->path_string = grpc_mdstr_from_string(mdctx, ":path", 0);
channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority", 0);
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
channel->max_message_length = DEFAULT_MAX_MESSAGE_LENGTH;
if (args) {
for (i = 0; i < args->num_args; i++) {
if (0 == strcmp(args->args[i].key, GRPC_ARG_MAX_MESSAGE_LENGTH)) {
if (args->args[i].type != GRPC_ARG_INTEGER) {
gpr_log(GPR_ERROR, "%s ignored: it must be an integer",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else if (args->args[i].value.integer < 0) {
gpr_log(GPR_ERROR, "%s ignored: it must be >= 0",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else {
channel->max_message_length = args->args[i].value.integer;
}
}
}
}
grpc_channel_stack_init(filters, num_filters, channel, args,
channel->metadata_context,
CHANNEL_STACK_FROM_CHANNEL(channel));
return channel;
}
void grpc_channel_destroy(grpc_channel *channel) {
grpc_channel_op op;
grpc_channel_element *elem;
elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
op.type = GRPC_CHANNEL_GOAWAY;
op.dir = GRPC_CALL_DOWN;
op.data.goaway.status = GRPC_STATUS_OK;
op.data.goaway.message = gpr_slice_from_copied_string("Client disconnect");
elem->filter->channel_op(elem, NULL, &op);
op.type = GRPC_CHANNEL_DISCONNECT;
op.dir = GRPC_CALL_DOWN;
elem->filter->channel_op(elem, NULL, &op);
grpc_channel_internal_unref(channel);
}
static void destroy_channel(void *p, int ok) {
grpc_channel *channel = p;
grpc_channel_stack_destroy(CHANNEL_STACK_FROM_CHANNEL(channel));
grpc_mdstr_unref(channel->grpc_status_string);
grpc_mdstr_unref(channel->grpc_message_string);
grpc_mdstr_unref(channel->path_string);
grpc_mdstr_unref(channel->authority_string);
while (channel->registered_calls) {
registered_call *rc = channel->registered_calls;
channel->registered_calls = rc->next;
grpc_mdelem_unref(rc->path);
grpc_mdelem_unref(rc->authority);
gpr_free(rc);
}
grpc_mdctx_unref(channel->metadata_context);
gpr_mu_destroy(&channel->registered_call_mu);
gpr_free(channel);
}
static void destroy_channel(grpc_exec_ctx *exec_ctx, grpc_channel *channel) {
grpc_channel_stack_destroy(exec_ctx, CHANNEL_STACK_FROM_CHANNEL(channel));
while (channel->registered_calls) {
registered_call *rc = channel->registered_calls;
channel->registered_calls = rc->next;
GRPC_MDELEM_UNREF(rc->path);
if (rc->authority) {
GRPC_MDELEM_UNREF(rc->authority);
}
gpr_free(rc);
}
if (channel->default_authority != NULL) {
GRPC_MDELEM_UNREF(channel->default_authority);
}
gpr_mu_destroy(&channel->registered_call_mu);
gpr_free(channel->target);
gpr_free(channel);
}
grpc_channel *grpc_channel_create_from_filters(
const grpc_channel_filter **filters, size_t num_filters,
const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client) {
size_t i;
size_t size =
sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
grpc_channel *channel = gpr_malloc(size);
GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
channel->is_client = is_client;
/* decremented by grpc_channel_destroy, and grpc_client_channel_closed if
* is_client */
gpr_ref_init(&channel->refs, 1 + is_client);
channel->metadata_context = mdctx;
channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status");
channel->grpc_message_string = grpc_mdstr_from_string(mdctx, "grpc-message");
channel->path_string = grpc_mdstr_from_string(mdctx, ":path");
channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority");
grpc_channel_stack_init(filters, num_filters, args, channel->metadata_context,
CHANNEL_STACK_FROM_CHANNEL(channel));
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
channel->max_message_length = DEFAULT_MAX_MESSAGE_LENGTH;
if (args) {
for (i = 0; i < args->num_args; i++) {
if (0 == strcmp(args->args[i].key, GRPC_ARG_MAX_MESSAGE_LENGTH)) {
if (args->args[i].type != GRPC_ARG_INTEGER) {
gpr_log(GPR_ERROR, "%s ignored: it must be an integer",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else if (args->args[i].value.integer < 0) {
gpr_log(GPR_ERROR, "%s ignored: it must be >= 0",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else {
channel->max_message_length = args->args[i].value.integer;
}
}
}
}
return channel;
}
grpc_channel *grpc_channel_create_from_filters(
const grpc_channel_filter **filters, size_t num_filters,
const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client) {
size_t size =
sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
grpc_channel *channel = gpr_malloc(size);
GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
channel->is_client = is_client;
/* decremented by grpc_channel_destroy, and grpc_client_channel_closed if
* is_client */
gpr_ref_init(&channel->refs, 1 + is_client);
channel->metadata_context = mdctx;
channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status");
channel->grpc_message_string = grpc_mdstr_from_string(mdctx, "grpc-message");
channel->path_string = grpc_mdstr_from_string(mdctx, ":path");
channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority");
grpc_channel_stack_init(filters, num_filters, args, channel->metadata_context,
CHANNEL_STACK_FROM_CHANNEL(channel));
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
return channel;
}
void grpc_channel_internal_unref(grpc_channel *channel, const char *reason) {
gpr_log(GPR_DEBUG, "CHANNEL: unref %p %d -> %d [%s]", channel,
channel->refs.count, channel->refs.count - 1, reason);
#else
void grpc_channel_internal_unref(grpc_channel *channel) {
#endif
if (gpr_unref(&channel->refs)) {
channel->destroy_closure.cb = destroy_channel;
channel->destroy_closure.cb_arg = channel;
grpc_iomgr_add_callback(&channel->destroy_closure);
}
}
void grpc_channel_destroy(grpc_channel *channel) {
grpc_transport_op op;
grpc_channel_element *elem;
memset(&op, 0, sizeof(op));
op.disconnect = 1;
elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
elem->filter->start_transport_op(elem, &op);
GRPC_CHANNEL_INTERNAL_UNREF(channel, "channel");
}
static void destroy_channel(void *p, int ok) {
grpc_channel *channel = p;
size_t i;
grpc_channel_stack_destroy(CHANNEL_STACK_FROM_CHANNEL(channel));
for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) {
grpc_mdelem_unref(channel->grpc_status_elem[i]);
}
grpc_mdstr_unref(channel->grpc_status_string);
grpc_mdstr_unref(channel->grpc_compression_level_string);
grpc_mdstr_unref(channel->grpc_message_string);
grpc_mdstr_unref(channel->path_string);
grpc_mdstr_unref(channel->authority_string);
while (channel->registered_calls) {
registered_call *rc = channel->registered_calls;
channel->registered_calls = rc->next;
grpc_mdelem_unref(rc->path);
grpc_mdelem_unref(rc->authority);
gpr_free(rc);
}
grpc_mdctx_unref(channel->metadata_context);
gpr_mu_destroy(&channel->registered_call_mu);
gpr_free(channel);
}
grpc_channel_stack *grpc_channel_get_channel_stack(grpc_channel *channel) {
return CHANNEL_STACK_FROM_CHANNEL(channel);
}
grpc_channel *grpc_channel_create_from_filters(
grpc_exec_ctx *exec_ctx, const char *target,
const grpc_channel_filter **filters, size_t num_filters,
const grpc_channel_args *args, int is_client) {
size_t i;
size_t size =
sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
grpc_channel *channel = gpr_malloc(size);
memset(channel, 0, sizeof(*channel));
channel->target = gpr_strdup(target);
GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
channel->is_client = is_client;
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
channel->max_message_length = DEFAULT_MAX_MESSAGE_LENGTH;
if (args) {
for (i = 0; i < args->num_args; i++) {
if (0 == strcmp(args->args[i].key, GRPC_ARG_MAX_MESSAGE_LENGTH)) {
if (args->args[i].type != GRPC_ARG_INTEGER) {
gpr_log(GPR_ERROR, "%s ignored: it must be an integer",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else if (args->args[i].value.integer < 0) {
gpr_log(GPR_ERROR, "%s ignored: it must be >= 0",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else {
channel->max_message_length = (gpr_uint32)args->args[i].value.integer;
}
} else if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) {
if (args->args[i].type != GRPC_ARG_STRING) {
gpr_log(GPR_ERROR, "%s ignored: it must be a string",
GRPC_ARG_DEFAULT_AUTHORITY);
} else {
if (channel->default_authority) {
/* setting this takes precedence over anything else */
GRPC_MDELEM_UNREF(channel->default_authority);
}
channel->default_authority = grpc_mdelem_from_strings(
":authority", args->args[i].value.string);
}
} else if (0 ==
strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) {
if (args->args[i].type != GRPC_ARG_STRING) {
gpr_log(GPR_ERROR, "%s ignored: it must be a string",
GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
} else {
if (channel->default_authority) {
/* other ways of setting this (notably ssl) take precedence */
gpr_log(GPR_ERROR,
"%s ignored: default host already set some other way",
GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
} else {
channel->default_authority = grpc_mdelem_from_strings(
":authority", args->args[i].value.string);
}
}
}
}
}
if (channel->is_client && channel->default_authority == NULL &&
target != NULL) {
char *default_authority = grpc_get_default_authority(target);
if (default_authority) {
channel->default_authority =
grpc_mdelem_from_strings(":authority", default_authority);
}
gpr_free(default_authority);
}
grpc_channel_stack_init(exec_ctx, 1, destroy_channel, channel, filters,
num_filters, args,
is_client ? "CLIENT_CHANNEL" : "SERVER_CHANNEL",
CHANNEL_STACK_FROM_CHANNEL(channel));
return channel;
}
grpc_channel *grpc_channel_create_with_builder(
grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder,
grpc_channel_stack_type channel_stack_type) {
char *target = gpr_strdup(grpc_channel_stack_builder_get_target(builder));
grpc_channel_args *args = grpc_channel_args_copy(
grpc_channel_stack_builder_get_channel_arguments(builder));
grpc_channel *channel;
grpc_error *error = grpc_channel_stack_builder_finish(
exec_ctx, builder, sizeof(grpc_channel), 1, destroy_channel, NULL,
(void **)&channel);
if (error != GRPC_ERROR_NONE) {
gpr_log(GPR_ERROR, "channel stack builder failed: %s",
grpc_error_string(error));
GRPC_ERROR_UNREF(error);
gpr_free(target);
goto done;
}
memset(channel, 0, sizeof(*channel));
channel->target = target;
channel->is_client = grpc_channel_stack_type_is_client(channel_stack_type);
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
gpr_atm_no_barrier_store(
&channel->call_size_estimate,
(gpr_atm)CHANNEL_STACK_FROM_CHANNEL(channel)->call_stack_size);
grpc_compression_options_init(&channel->compression_options);
for (size_t i = 0; i < args->num_args; i++) {
if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) {
if (args->args[i].type != GRPC_ARG_STRING) {
gpr_log(GPR_ERROR, "%s ignored: it must be a string",
GRPC_ARG_DEFAULT_AUTHORITY);
} else {
if (!GRPC_MDISNULL(channel->default_authority)) {
/* setting this takes precedence over anything else */
GRPC_MDELEM_UNREF(exec_ctx, channel->default_authority);
}
channel->default_authority = grpc_mdelem_from_slices(
exec_ctx, GRPC_MDSTR_AUTHORITY,
grpc_slice_intern(
grpc_slice_from_static_string(args->args[i].value.string)));
}
} else if (0 ==
strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) {
if (args->args[i].type != GRPC_ARG_STRING) {
gpr_log(GPR_ERROR, "%s ignored: it must be a string",
GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
} else {
if (!GRPC_MDISNULL(channel->default_authority)) {
/* other ways of setting this (notably ssl) take precedence */
gpr_log(GPR_ERROR,
"%s ignored: default host already set some other way",
GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
} else {
channel->default_authority = grpc_mdelem_from_slices(
exec_ctx, GRPC_MDSTR_AUTHORITY,
grpc_slice_intern(
grpc_slice_from_static_string(args->args[i].value.string)));
}
}
} else if (0 == strcmp(args->args[i].key,
GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) {
channel->compression_options.default_level.is_set = true;
channel->compression_options.default_level.level =
(grpc_compression_level)grpc_channel_arg_get_integer(
&args->args[i],
(grpc_integer_options){GRPC_COMPRESS_LEVEL_NONE,
GRPC_COMPRESS_LEVEL_NONE,
GRPC_COMPRESS_LEVEL_COUNT - 1});
} else if (0 == strcmp(args->args[i].key,
GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
channel->compression_options.default_algorithm.is_set = true;
channel->compression_options.default_algorithm.algorithm =
(grpc_compression_algorithm)grpc_channel_arg_get_integer(
&args->args[i],
(grpc_integer_options){GRPC_COMPRESS_NONE, GRPC_COMPRESS_NONE,
GRPC_COMPRESS_ALGORITHMS_COUNT - 1});
} else if (0 ==
strcmp(args->args[i].key,
GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
channel->compression_options.enabled_algorithms_bitset =
(uint32_t)args->args[i].value.integer |
0x1; /* always support no compression */
}
}
done:
grpc_channel_args_destroy(exec_ctx, args);
return channel;
}
grpc_channel *grpc_channel_create_from_filters(
grpc_exec_ctx *exec_ctx, const char *target,
const grpc_channel_filter **filters, size_t num_filters,
const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client) {
size_t i;
size_t size =
sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
grpc_channel *channel = gpr_malloc(size);
memset(channel, 0, sizeof(*channel));
channel->target = gpr_strdup(target);
GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
channel->is_client = is_client;
/* decremented by grpc_channel_destroy */
gpr_ref_init(&channel->refs, 1);
channel->metadata_context = mdctx;
channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status", 0);
channel->grpc_compression_algorithm_string =
grpc_mdstr_from_string(mdctx, "grpc-encoding", 0);
channel->grpc_encodings_accepted_by_peer_string =
grpc_mdstr_from_string(mdctx, "grpc-accept-encoding", 0);
channel->grpc_message_string =
grpc_mdstr_from_string(mdctx, "grpc-message", 0);
for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) {
char buf[GPR_LTOA_MIN_BUFSIZE];
gpr_ltoa((long)i, buf);
channel->grpc_status_elem[i] = grpc_mdelem_from_metadata_strings(
mdctx, GRPC_MDSTR_REF(channel->grpc_status_string),
grpc_mdstr_from_string(mdctx, buf, 0));
}
channel->path_string = grpc_mdstr_from_string(mdctx, ":path", 0);
channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority", 0);
gpr_mu_init(&channel->registered_call_mu);
channel->registered_calls = NULL;
channel->max_message_length = DEFAULT_MAX_MESSAGE_LENGTH;
if (args) {
for (i = 0; i < args->num_args; i++) {
if (0 == strcmp(args->args[i].key, GRPC_ARG_MAX_MESSAGE_LENGTH)) {
if (args->args[i].type != GRPC_ARG_INTEGER) {
gpr_log(GPR_ERROR, "%s ignored: it must be an integer",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else if (args->args[i].value.integer < 0) {
gpr_log(GPR_ERROR, "%s ignored: it must be >= 0",
GRPC_ARG_MAX_MESSAGE_LENGTH);
} else {
channel->max_message_length = (gpr_uint32)args->args[i].value.integer;
}
} else if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) {
if (args->args[i].type != GRPC_ARG_STRING) {
gpr_log(GPR_ERROR, "%s: must be an string",
GRPC_ARG_DEFAULT_AUTHORITY);
} else {
if (channel->default_authority) {
/* setting this takes precedence over anything else */
GRPC_MDELEM_UNREF(channel->default_authority);
}
channel->default_authority = grpc_mdelem_from_strings(
mdctx, ":authority", args->args[i].value.string);
}
} else if (0 ==
strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) {
if (args->args[i].type != GRPC_ARG_STRING) {
gpr_log(GPR_ERROR, "%s: must be an string",
GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
} else {
if (channel->default_authority) {
/* other ways of setting this (notably ssl) take precedence */
gpr_log(GPR_ERROR, "%s: default host already set some other way",
GRPC_ARG_DEFAULT_AUTHORITY);
} else {
channel->default_authority = grpc_mdelem_from_strings(
mdctx, ":authority", args->args[i].value.string);
}
}
}
}
}
if (channel->is_client && channel->default_authority == NULL &&
target != NULL) {
char *default_authority = grpc_get_default_authority(target);
if (default_authority) {
channel->default_authority = grpc_mdelem_from_strings(
channel->metadata_context, ":authority", default_authority);
}
gpr_free(default_authority);
}
grpc_channel_stack_init(exec_ctx, filters, num_filters, channel, args,
channel->metadata_context,
CHANNEL_STACK_FROM_CHANNEL(channel));
return channel;
}
