Craig Tiller
1 year ago
commit
853c11f144
39 changed files with 1099 additions and 215 deletions
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// Copyright 2022 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <grpc/support/port_platform.h> |
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#include "src/core/ext/filters/http/message_compress/legacy_compression_filter.h" |
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#include <inttypes.h> |
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#include <functional> |
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#include <memory> |
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#include <utility> |
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#include "absl/status/status.h" |
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#include "absl/strings/str_cat.h" |
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#include "absl/strings/str_format.h" |
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#include "absl/types/optional.h" |
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#include <grpc/compression.h> |
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#include <grpc/grpc.h> |
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#include <grpc/impl/channel_arg_names.h> |
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#include <grpc/impl/compression_types.h> |
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#include <grpc/support/log.h> |
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#include "src/core/ext/filters/message_size/message_size_filter.h" |
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#include "src/core/lib/channel/call_tracer.h" |
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#include "src/core/lib/channel/channel_args.h" |
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#include "src/core/lib/channel/channel_stack.h" |
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#include "src/core/lib/channel/context.h" |
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#include "src/core/lib/channel/promise_based_filter.h" |
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#include "src/core/lib/compression/compression_internal.h" |
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#include "src/core/lib/compression/message_compress.h" |
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#include "src/core/lib/debug/trace.h" |
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#include "src/core/lib/promise/activity.h" |
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#include "src/core/lib/promise/context.h" |
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#include "src/core/lib/promise/latch.h" |
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#include "src/core/lib/promise/pipe.h" |
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#include "src/core/lib/promise/prioritized_race.h" |
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#include "src/core/lib/resource_quota/arena.h" |
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#include "src/core/lib/slice/slice_buffer.h" |
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#include "src/core/lib/surface/call.h" |
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#include "src/core/lib/surface/call_trace.h" |
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#include "src/core/lib/transport/metadata_batch.h" |
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#include "src/core/lib/transport/transport.h" |
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namespace grpc_core { |
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const grpc_channel_filter LegacyClientCompressionFilter::kFilter = |
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MakePromiseBasedFilter< |
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LegacyClientCompressionFilter, FilterEndpoint::kClient, |
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kFilterExaminesServerInitialMetadata | kFilterExaminesInboundMessages | |
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kFilterExaminesOutboundMessages>("compression"); |
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const grpc_channel_filter LegacyServerCompressionFilter::kFilter = |
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MakePromiseBasedFilter< |
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LegacyServerCompressionFilter, FilterEndpoint::kServer, |
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kFilterExaminesServerInitialMetadata | kFilterExaminesInboundMessages | |
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kFilterExaminesOutboundMessages>("compression"); |
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absl::StatusOr<LegacyClientCompressionFilter> |
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LegacyClientCompressionFilter::Create(const ChannelArgs& args, |
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ChannelFilter::Args) { |
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return LegacyClientCompressionFilter(args); |
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} |
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absl::StatusOr<LegacyServerCompressionFilter> |
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LegacyServerCompressionFilter::Create(const ChannelArgs& args, |
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ChannelFilter::Args) { |
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return LegacyServerCompressionFilter(args); |
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} |
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LegacyCompressionFilter::LegacyCompressionFilter(const ChannelArgs& args) |
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: max_recv_size_(GetMaxRecvSizeFromChannelArgs(args)), |
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message_size_service_config_parser_index_( |
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MessageSizeParser::ParserIndex()), |
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default_compression_algorithm_( |
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DefaultCompressionAlgorithmFromChannelArgs(args).value_or( |
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GRPC_COMPRESS_NONE)), |
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enabled_compression_algorithms_( |
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CompressionAlgorithmSet::FromChannelArgs(args)), |
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enable_compression_( |
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args.GetBool(GRPC_ARG_ENABLE_PER_MESSAGE_COMPRESSION).value_or(true)), |
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enable_decompression_( |
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args.GetBool(GRPC_ARG_ENABLE_PER_MESSAGE_DECOMPRESSION) |
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.value_or(true)) { |
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// Make sure the default is enabled.
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if (!enabled_compression_algorithms_.IsSet(default_compression_algorithm_)) { |
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const char* name; |
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if (!grpc_compression_algorithm_name(default_compression_algorithm_, |
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&name)) { |
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name = "<unknown>"; |
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} |
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gpr_log(GPR_ERROR, |
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"default compression algorithm %s not enabled: switching to none", |
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name); |
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default_compression_algorithm_ = GRPC_COMPRESS_NONE; |
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} |
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} |
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MessageHandle LegacyCompressionFilter::CompressMessage( |
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MessageHandle message, grpc_compression_algorithm algorithm) const { |
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if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) { |
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gpr_log(GPR_INFO, "CompressMessage: len=%" PRIdPTR " alg=%d flags=%d", |
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message->payload()->Length(), algorithm, message->flags()); |
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} |
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auto* call_context = GetContext<grpc_call_context_element>(); |
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auto* call_tracer = static_cast<CallTracerInterface*>( |
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call_context[GRPC_CONTEXT_CALL_TRACER].value); |
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if (call_tracer != nullptr) { |
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call_tracer->RecordSendMessage(*message->payload()); |
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} |
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// Check if we're allowed to compress this message
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// (apps might want to disable compression for certain messages to avoid
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// crime/beast like vulns).
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uint32_t& flags = message->mutable_flags(); |
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if (algorithm == GRPC_COMPRESS_NONE || !enable_compression_ || |
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(flags & (GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_INTERNAL_COMPRESS))) { |
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return message; |
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} |
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// Try to compress the payload.
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SliceBuffer tmp; |
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SliceBuffer* payload = message->payload(); |
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bool did_compress = grpc_msg_compress(algorithm, payload->c_slice_buffer(), |
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tmp.c_slice_buffer()); |
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// If we achieved compression send it as compressed, otherwise send it as (to
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// avoid spending cycles on the receiver decompressing).
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if (did_compress) { |
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if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) { |
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const char* algo_name; |
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const size_t before_size = payload->Length(); |
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const size_t after_size = tmp.Length(); |
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const float savings_ratio = 1.0f - static_cast<float>(after_size) / |
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static_cast<float>(before_size); |
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GPR_ASSERT(grpc_compression_algorithm_name(algorithm, &algo_name)); |
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gpr_log(GPR_INFO, |
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"Compressed[%s] %" PRIuPTR " bytes vs. %" PRIuPTR |
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" bytes (%.2f%% savings)", |
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algo_name, before_size, after_size, 100 * savings_ratio); |
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} |
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tmp.Swap(payload); |
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flags |= GRPC_WRITE_INTERNAL_COMPRESS; |
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if (call_tracer != nullptr) { |
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call_tracer->RecordSendCompressedMessage(*message->payload()); |
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} |
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} else { |
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if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) { |
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const char* algo_name; |
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GPR_ASSERT(grpc_compression_algorithm_name(algorithm, &algo_name)); |
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gpr_log(GPR_INFO, |
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"Algorithm '%s' enabled but decided not to compress. Input size: " |
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"%" PRIuPTR, |
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algo_name, payload->Length()); |
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} |
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} |
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return message; |
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} |
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absl::StatusOr<MessageHandle> LegacyCompressionFilter::DecompressMessage( |
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MessageHandle message, DecompressArgs args) const { |
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if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) { |
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gpr_log(GPR_INFO, "DecompressMessage: len=%" PRIdPTR " max=%d alg=%d", |
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message->payload()->Length(), |
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args.max_recv_message_length.value_or(-1), args.algorithm); |
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} |
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auto* call_context = GetContext<grpc_call_context_element>(); |
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auto* call_tracer = static_cast<CallTracerInterface*>( |
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call_context[GRPC_CONTEXT_CALL_TRACER].value); |
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if (call_tracer != nullptr) { |
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call_tracer->RecordReceivedMessage(*message->payload()); |
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} |
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// Check max message length.
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if (args.max_recv_message_length.has_value() && |
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message->payload()->Length() > |
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static_cast<size_t>(*args.max_recv_message_length)) { |
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return absl::ResourceExhaustedError(absl::StrFormat( |
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"Received message larger than max (%u vs. %d)", |
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message->payload()->Length(), *args.max_recv_message_length)); |
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} |
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// Check if decompression is enabled (if not, we can just pass the message
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// up).
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if (!enable_decompression_ || |
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(message->flags() & GRPC_WRITE_INTERNAL_COMPRESS) == 0) { |
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return std::move(message); |
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} |
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// Try to decompress the payload.
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SliceBuffer decompressed_slices; |
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if (grpc_msg_decompress(args.algorithm, message->payload()->c_slice_buffer(), |
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decompressed_slices.c_slice_buffer()) == 0) { |
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return absl::InternalError( |
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absl::StrCat("Unexpected error decompressing data for algorithm ", |
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CompressionAlgorithmAsString(args.algorithm))); |
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} |
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// Swap the decompressed slices into the message.
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message->payload()->Swap(&decompressed_slices); |
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message->mutable_flags() &= ~GRPC_WRITE_INTERNAL_COMPRESS; |
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message->mutable_flags() |= GRPC_WRITE_INTERNAL_TEST_ONLY_WAS_COMPRESSED; |
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if (call_tracer != nullptr) { |
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call_tracer->RecordReceivedDecompressedMessage(*message->payload()); |
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} |
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return std::move(message); |
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} |
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grpc_compression_algorithm LegacyCompressionFilter::HandleOutgoingMetadata( |
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grpc_metadata_batch& outgoing_metadata) { |
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const auto algorithm = outgoing_metadata.Take(GrpcInternalEncodingRequest()) |
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.value_or(default_compression_algorithm()); |
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// Convey supported compression algorithms.
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outgoing_metadata.Set(GrpcAcceptEncodingMetadata(), |
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enabled_compression_algorithms()); |
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if (algorithm != GRPC_COMPRESS_NONE) { |
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outgoing_metadata.Set(GrpcEncodingMetadata(), algorithm); |
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} |
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return algorithm; |
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} |
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LegacyCompressionFilter::DecompressArgs |
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LegacyCompressionFilter::HandleIncomingMetadata( |
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const grpc_metadata_batch& incoming_metadata) { |
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// Configure max receive size.
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auto max_recv_message_length = max_recv_size_; |
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const MessageSizeParsedConfig* limits = |
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MessageSizeParsedConfig::GetFromCallContext( |
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GetContext<grpc_call_context_element>(), |
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message_size_service_config_parser_index_); |
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if (limits != nullptr && limits->max_recv_size().has_value() && |
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(!max_recv_message_length.has_value() || |
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*limits->max_recv_size() < *max_recv_message_length)) { |
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max_recv_message_length = *limits->max_recv_size(); |
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} |
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return DecompressArgs{incoming_metadata.get(GrpcEncodingMetadata()) |
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.value_or(GRPC_COMPRESS_NONE), |
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max_recv_message_length}; |
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} |
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ArenaPromise<ServerMetadataHandle> |
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LegacyClientCompressionFilter::MakeCallPromise( |
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CallArgs call_args, NextPromiseFactory next_promise_factory) { |
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auto compression_algorithm = |
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HandleOutgoingMetadata(*call_args.client_initial_metadata); |
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call_args.client_to_server_messages->InterceptAndMap( |
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[compression_algorithm, |
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this](MessageHandle message) -> absl::optional<MessageHandle> { |
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return CompressMessage(std::move(message), compression_algorithm); |
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}); |
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auto* decompress_args = GetContext<Arena>()->New<DecompressArgs>( |
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DecompressArgs{GRPC_COMPRESS_ALGORITHMS_COUNT, absl::nullopt}); |
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auto* decompress_err = |
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GetContext<Arena>()->New<Latch<ServerMetadataHandle>>(); |
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call_args.server_initial_metadata->InterceptAndMap( |
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[decompress_args, this](ServerMetadataHandle server_initial_metadata) |
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-> absl::optional<ServerMetadataHandle> { |
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if (server_initial_metadata == nullptr) return absl::nullopt; |
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*decompress_args = HandleIncomingMetadata(*server_initial_metadata); |
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return std::move(server_initial_metadata); |
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}); |
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call_args.server_to_client_messages->InterceptAndMap( |
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[decompress_err, decompress_args, |
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this](MessageHandle message) -> absl::optional<MessageHandle> { |
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auto r = DecompressMessage(std::move(message), *decompress_args); |
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if (!r.ok()) { |
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decompress_err->Set(ServerMetadataFromStatus(r.status())); |
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return absl::nullopt; |
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} |
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return std::move(*r); |
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}); |
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// Run the next filter, and race it with getting an error from decompression.
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return PrioritizedRace(decompress_err->Wait(), |
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next_promise_factory(std::move(call_args))); |
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} |
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ArenaPromise<ServerMetadataHandle> |
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LegacyServerCompressionFilter::MakeCallPromise( |
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CallArgs call_args, NextPromiseFactory next_promise_factory) { |
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auto decompress_args = |
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HandleIncomingMetadata(*call_args.client_initial_metadata); |
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auto* decompress_err = |
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GetContext<Arena>()->New<Latch<ServerMetadataHandle>>(); |
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call_args.client_to_server_messages->InterceptAndMap( |
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[decompress_err, decompress_args, |
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this](MessageHandle message) -> absl::optional<MessageHandle> { |
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auto r = DecompressMessage(std::move(message), decompress_args); |
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if (grpc_call_trace.enabled()) { |
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gpr_log(GPR_DEBUG, "%s[compression] DecompressMessage returned %s", |
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Activity::current()->DebugTag().c_str(), |
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r.status().ToString().c_str()); |
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} |
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if (!r.ok()) { |
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decompress_err->Set(ServerMetadataFromStatus(r.status())); |
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return absl::nullopt; |
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} |
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return std::move(*r); |
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}); |
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auto* compression_algorithm = |
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GetContext<Arena>()->New<grpc_compression_algorithm>(); |
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call_args.server_initial_metadata->InterceptAndMap( |
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[this, compression_algorithm](ServerMetadataHandle md) { |
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if (grpc_call_trace.enabled()) { |
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gpr_log(GPR_INFO, "%s[compression] Write metadata", |
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Activity::current()->DebugTag().c_str()); |
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} |
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// Find the compression algorithm.
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*compression_algorithm = HandleOutgoingMetadata(*md); |
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return md; |
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}); |
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call_args.server_to_client_messages->InterceptAndMap( |
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[compression_algorithm, |
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this](MessageHandle message) -> absl::optional<MessageHandle> { |
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return CompressMessage(std::move(message), *compression_algorithm); |
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}); |
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// Run the next filter, and race it with getting an error from decompression.
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return PrioritizedRace(decompress_err->Wait(), |
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next_promise_factory(std::move(call_args))); |
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} |
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} // namespace grpc_core
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@ -0,0 +1,139 @@ |
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//
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//
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// Copyright 2020 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//
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#ifndef GRPC_SRC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_LEGACY_COMPRESSION_FILTER_H |
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#define GRPC_SRC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_LEGACY_COMPRESSION_FILTER_H |
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#include <grpc/support/port_platform.h> |
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#include <stddef.h> |
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#include <stdint.h> |
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#include "absl/status/statusor.h" |
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#include "absl/types/optional.h" |
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#include <grpc/impl/compression_types.h> |
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#include "src/core/lib/channel/channel_args.h" |
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#include "src/core/lib/channel/channel_fwd.h" |
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#include "src/core/lib/channel/promise_based_filter.h" |
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#include "src/core/lib/compression/compression_internal.h" |
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#include "src/core/lib/promise/arena_promise.h" |
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#include "src/core/lib/transport/metadata_batch.h" |
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#include "src/core/lib/transport/transport.h" |
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namespace grpc_core { |
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/// Compression filter for messages.
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///
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/// See <grpc/compression.h> for the available compression settings.
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///
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/// Compression settings may come from:
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/// - Channel configuration, as established at channel creation time.
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/// - The metadata accompanying the outgoing data to be compressed. This is
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/// taken as a request only. We may choose not to honor it. The metadata key
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/// is given by \a GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY.
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///
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/// Compression can be disabled for concrete messages (for instance in order to
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/// prevent CRIME/BEAST type attacks) by having the GRPC_WRITE_NO_COMPRESS set
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/// in the MessageHandle flags.
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///
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/// The attempted compression mechanism is added to the resulting initial
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/// metadata under the 'grpc-encoding' key.
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///
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/// If compression is actually performed, the MessageHandle's flag is modified
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/// to incorporate GRPC_WRITE_INTERNAL_COMPRESS. Otherwise, and regardless of
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/// the aforementioned 'grpc-encoding' metadata value, data will pass through
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/// uncompressed.
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class LegacyCompressionFilter : public ChannelFilter { |
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protected: |
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struct DecompressArgs { |
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grpc_compression_algorithm algorithm; |
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absl::optional<uint32_t> max_recv_message_length; |
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}; |
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explicit LegacyCompressionFilter(const ChannelArgs& args); |
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grpc_compression_algorithm default_compression_algorithm() const { |
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return default_compression_algorithm_; |
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} |
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CompressionAlgorithmSet enabled_compression_algorithms() const { |
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return enabled_compression_algorithms_; |
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} |
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grpc_compression_algorithm HandleOutgoingMetadata( |
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grpc_metadata_batch& outgoing_metadata); |
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DecompressArgs HandleIncomingMetadata( |
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const grpc_metadata_batch& incoming_metadata); |
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// Compress one message synchronously.
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MessageHandle CompressMessage(MessageHandle message, |
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grpc_compression_algorithm algorithm) const; |
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// Decompress one message synchronously.
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absl::StatusOr<MessageHandle> DecompressMessage(MessageHandle message, |
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DecompressArgs args) const; |
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private: |
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// Max receive message length, if set.
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absl::optional<uint32_t> max_recv_size_; |
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size_t message_size_service_config_parser_index_; |
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// The default, channel-level, compression algorithm.
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grpc_compression_algorithm default_compression_algorithm_; |
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// Enabled compression algorithms.
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CompressionAlgorithmSet enabled_compression_algorithms_; |
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// Is compression enabled?
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bool enable_compression_; |
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// Is decompression enabled?
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bool enable_decompression_; |
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}; |
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class LegacyClientCompressionFilter final : public LegacyCompressionFilter { |
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public: |
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static const grpc_channel_filter kFilter; |
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static absl::StatusOr<LegacyClientCompressionFilter> Create( |
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const ChannelArgs& args, ChannelFilter::Args filter_args); |
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|
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// Construct a promise for one call.
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ArenaPromise<ServerMetadataHandle> MakeCallPromise( |
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CallArgs call_args, NextPromiseFactory next_promise_factory) override; |
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private: |
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using LegacyCompressionFilter::LegacyCompressionFilter; |
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}; |
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class LegacyServerCompressionFilter final : public LegacyCompressionFilter { |
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public: |
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static const grpc_channel_filter kFilter; |
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static absl::StatusOr<LegacyServerCompressionFilter> Create( |
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const ChannelArgs& args, ChannelFilter::Args filter_args); |
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|
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// Construct a promise for one call.
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ArenaPromise<ServerMetadataHandle> MakeCallPromise( |
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CallArgs call_args, NextPromiseFactory next_promise_factory) override; |
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private: |
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using LegacyCompressionFilter::LegacyCompressionFilter; |
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}; |
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} // namespace grpc_core
|
||||
|
||||
#endif // GRPC_SRC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_LEGACY_COMPRESSION_FILTER_H
|
||||
@ -0,0 +1,51 @@ |
||||
api_actions { |
||||
create_call { |
||||
propagation_mask: 6 |
||||
method { |
||||
value: "~" |
||||
} |
||||
timeout: 34816 |
||||
} |
||||
} |
||||
api_actions { |
||||
queue_batch { |
||||
operations { |
||||
send_initial_metadata { |
||||
} |
||||
} |
||||
operations { |
||||
send_message { |
||||
} |
||||
} |
||||
operations { |
||||
receive_message { |
||||
} |
||||
} |
||||
} |
||||
} |
||||
api_actions { |
||||
create_server { |
||||
} |
||||
} |
||||
api_actions { |
||||
disable_tracer: "(" |
||||
} |
||||
api_actions { |
||||
destroy_call { |
||||
} |
||||
} |
||||
api_actions { |
||||
poll_cq { |
||||
} |
||||
} |
||||
api_actions { |
||||
} |
||||
api_actions { |
||||
shutdown_server { |
||||
} |
||||
} |
||||
config_vars { |
||||
verbosity: "\364\204\204\204\364\204\204\204\364\204\204\204\364\204\204\204\364\204\204\204\364\204\204\204\364\204\204\204\364\204\204\204\004" |
||||
stacktrace_minloglevel: "yyyyyyyyyyyyy&yyyyyyy\177\014" |
||||
experiments: 1099511626496 |
||||
} |
||||
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