diff options
Diffstat (limited to 'src/core/ext/client_channel/client_channel_plugin.c')
-rw-r--r-- | src/core/ext/client_channel/client_channel_plugin.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/core/ext/client_channel/client_channel_plugin.c b/src/core/ext/client_channel/client_channel_plugin.c new file mode 100644 index 0000000000..a3e5079843 --- /dev/null +++ b/src/core/ext/client_channel/client_channel_plugin.c @@ -0,0 +1,91 @@ +/* + * + * Copyright 2015, 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 <limits.h> +#include <stdbool.h> +#include <string.h> + +#include <grpc/support/alloc.h> + +#include "src/core/ext/client_channel/client_channel.h" +#include "src/core/ext/client_channel/lb_policy_registry.h" +#include "src/core/ext/client_channel/resolver_registry.h" +#include "src/core/ext/client_channel/subchannel_index.h" +#include "src/core/lib/surface/channel_init.h" + +static bool append_filter(grpc_channel_stack_builder *builder, void *arg) { + return grpc_channel_stack_builder_append_filter( + builder, (const grpc_channel_filter *)arg, NULL, NULL); +} + +static bool set_default_host_if_unset(grpc_channel_stack_builder *builder, + void *unused) { + const grpc_channel_args *args = + grpc_channel_stack_builder_get_channel_arguments(builder); + for (size_t i = 0; i < args->num_args; i++) { + if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY) || + 0 == strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) { + return true; + } + } + char *default_authority = grpc_get_default_authority( + grpc_channel_stack_builder_get_target(builder)); + if (default_authority != NULL) { + grpc_arg arg; + arg.type = GRPC_ARG_STRING; + arg.key = GRPC_ARG_DEFAULT_AUTHORITY; + arg.value.string = default_authority; + grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1); + grpc_channel_stack_builder_set_channel_arguments(builder, new_args); + gpr_free(default_authority); + grpc_channel_args_destroy(new_args); + } + return true; +} + +void grpc_client_channel_init(void) { + grpc_lb_policy_registry_init(); + grpc_resolver_registry_init(); + grpc_subchannel_index_init(); + grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MIN, + set_default_host_if_unset, NULL); + grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, append_filter, + (void *)&grpc_client_channel_filter); +} + +void grpc_client_channel_shutdown(void) { + grpc_subchannel_index_shutdown(); + grpc_channel_init_shutdown(); + grpc_resolver_registry_shutdown(); + grpc_lb_policy_registry_shutdown(); +} |