mirror of https://github.com/grpc/grpc.git
Craig Tiller
8 years ago
parent
b0f15ff23b
commit
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53 changed files with 436 additions and 355 deletions
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/*
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* |
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* Copyright 2017, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include <string.h> |
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#include "src/core/ext/filters/http/client/http_client_filter.h" |
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#include "src/core/ext/filters/http/compress/compress_filter.h" |
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#include "src/core/ext/filters/http/server/http_server_filter.h" |
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#include "src/core/lib/channel/channel_stack_builder.h" |
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#include "src/core/lib/surface/channel_init.h" |
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#include "src/core/lib/transport/transport_impl.h" |
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typedef struct { |
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const grpc_channel_filter *filter; |
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const char *control_channel_arg; |
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} optional_filter; |
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static optional_filter compress_filter = { |
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&grpc_compress_filter, GRPC_ARG_ENABLE_PER_MESSAGE_COMPRESSION}; |
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static bool is_building_http_like_transport( |
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grpc_channel_stack_builder *builder) { |
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grpc_transport *t = grpc_channel_stack_builder_get_transport(builder); |
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return t && strstr(t->vtable->name, "http"); |
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} |
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static bool maybe_add_optional_filter(grpc_exec_ctx *exec_ctx, |
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grpc_channel_stack_builder *builder, |
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void *arg) { |
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if (!is_building_http_like_transport(builder)) return true; |
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optional_filter *filtarg = arg; |
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const grpc_channel_args *channel_args = |
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grpc_channel_stack_builder_get_channel_arguments(builder); |
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bool enable = !grpc_channel_args_want_minimal_stack(channel_args); |
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const grpc_arg *ctlarg = |
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grpc_channel_args_find(channel_args, filtarg->control_channel_arg); |
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if (ctlarg != NULL) { |
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enable = !(ctlarg->type == GRPC_ARG_INTEGER && ctlarg->value.integer == 0); |
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} |
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return enable ? grpc_channel_stack_builder_prepend_filter( |
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builder, filtarg->filter, NULL, NULL) |
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: true; |
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} |
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static bool maybe_add_required_filter(grpc_exec_ctx *exec_ctx, |
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grpc_channel_stack_builder *builder, |
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void *arg) { |
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return is_building_http_like_transport(builder) |
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? grpc_channel_stack_builder_prepend_filter( |
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builder, (const grpc_channel_filter *)arg, NULL, NULL) |
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: true; |
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} |
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void grpc_http_filters_init(void) { |
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grpc_register_tracer("compression", &grpc_compression_trace); |
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grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, |
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GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, |
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maybe_add_optional_filter, &compress_filter); |
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grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, |
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GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, |
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maybe_add_optional_filter, &compress_filter); |
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grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, |
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GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, |
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maybe_add_optional_filter, &compress_filter); |
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grpc_channel_init_register_stage( |
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GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, |
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maybe_add_required_filter, (void *)&grpc_http_client_filter); |
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grpc_channel_init_register_stage( |
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GRPC_CLIENT_DIRECT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, |
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maybe_add_required_filter, (void *)&grpc_http_client_filter); |
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grpc_channel_init_register_stage( |
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GRPC_SERVER_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, |
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maybe_add_required_filter, (void *)&grpc_http_server_filter); |
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} |
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void grpc_http_filters_shutdown(void) {} |
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