// Constructor for channel_data.
static void init_channel_elem(grpc_exec_ctx* exec_ctx,
grpc_channel_element* elem,
grpc_channel_element_args* args) {
GPR_ASSERT(!args->is_last);
channel_data* chand = elem->channel_data;
memset(chand, 0, sizeof(*chand));
chand->max_send_size = DEFAULT_MAX_SEND_MESSAGE_LENGTH;
chand->max_recv_size = DEFAULT_MAX_RECV_MESSAGE_LENGTH;
for (size_t i = 0; i < args->channel_args->num_args; ++i) {
if (strcmp(args->channel_args->args[i].key,
GRPC_ARG_MAX_SEND_MESSAGE_LENGTH) == 0) {
const grpc_integer_options options = {DEFAULT_MAX_SEND_MESSAGE_LENGTH, 0,
INT_MAX};
chand->max_send_size =
grpc_channel_arg_get_integer(&args->channel_args->args[i], options);
}
if (strcmp(args->channel_args->args[i].key,
GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH) == 0) {
const grpc_integer_options options = {DEFAULT_MAX_RECV_MESSAGE_LENGTH, 0,
INT_MAX};
chand->max_recv_size =
grpc_channel_arg_get_integer(&args->channel_args->args[i], options);
}
}
// Get method config table from channel args.
const grpc_arg* channel_arg =
grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVICE_CONFIG);
if (channel_arg != NULL) {
GPR_ASSERT(channel_arg->type == GRPC_ARG_POINTER);
chand->method_limit_table = grpc_method_config_table_convert(
(grpc_method_config_table*)channel_arg->value.pointer.p,
method_config_convert_value, &message_size_limits_vtable);
}
}
grpc_endpoint *grpc_tcp_client_create_from_fd(
grpc_exec_ctx *exec_ctx, grpc_fd *fd, const grpc_channel_args *channel_args,
const char *addr_str) {
size_t tcp_read_chunk_size = GRPC_TCP_DEFAULT_READ_SLICE_SIZE;
grpc_resource_quota *resource_quota = grpc_resource_quota_create(NULL);
if (channel_args != NULL) {
for (size_t i = 0; i < channel_args->num_args; i++) {
if (0 ==
strcmp(channel_args->args[i].key, GRPC_ARG_TCP_READ_CHUNK_SIZE)) {
grpc_integer_options options = {(int)tcp_read_chunk_size, 1,
8 * 1024 * 1024};
tcp_read_chunk_size = (size_t)grpc_channel_arg_get_integer(
&channel_args->args[i], options);
} else if (0 ==
strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
resource_quota = grpc_resource_quota_internal_ref(
channel_args->args[i].value.pointer.p);
}
}
}
grpc_endpoint *ep =
grpc_tcp_create(fd, resource_quota, tcp_read_chunk_size, addr_str);
grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
return ep;
}
message_size_limits get_message_size_limits(
const grpc_channel_args* channel_args) {
message_size_limits lim;
lim.max_send_size =
default_size(channel_args, GRPC_DEFAULT_MAX_SEND_MESSAGE_LENGTH);
lim.max_recv_size =
default_size(channel_args, GRPC_DEFAULT_MAX_RECV_MESSAGE_LENGTH);
for (size_t i = 0; i < channel_args->num_args; ++i) {
if (strcmp(channel_args->args[i].key, GRPC_ARG_MAX_SEND_MESSAGE_LENGTH) ==
0) {
const grpc_integer_options options = {lim.max_send_size, -1, INT_MAX};
lim.max_send_size =
grpc_channel_arg_get_integer(&channel_args->args[i], options);
}
if (strcmp(channel_args->args[i].key,
GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH) == 0) {
const grpc_integer_options options = {lim.max_recv_size, -1, INT_MAX};
lim.max_recv_size =
grpc_channel_arg_get_integer(&channel_args->args[i], options);
}
}
return lim;
}
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;
}