mirror of https://github.com/grpc/grpc.git
pull/5726/head
Craig Tiller
9 years ago
commit
9768457101
909 changed files with 20931 additions and 15354 deletions
@ -0,0 +1,8 @@ |
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-Ithird_party/googletest/include |
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-Ithird_party/googletest |
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-Iinclude |
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-Igens |
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-I. |
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-Ithird_party/boringssl/include |
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-Ithird_party/zlib |
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-Ithird_party/protobuf/src |
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@ -1,14 +1,28 @@ |
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# Top-level Items by language |
# Top-level Items by language |
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|
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## Bazel |
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* [grpc.bzl](grpc.bzl) |
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## Node |
## Node |
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* [binding.gyp](binding.gyp) |
* [binding.gyp](binding.gyp) |
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* [package.json](package.json) |
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|
|
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## Objective-C |
## Objective-C |
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* [gRPC.podspec](gRPC.podspec) |
* [gRPC.podspec](gRPC.podspec) |
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|
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## PHP |
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* [composer.json](composer.json) |
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* [config.m4](config.m4) |
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* [package.xml](package.xml) |
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|
|
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## Python |
## Python |
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* [requirements.txt](requirements.txt) |
* [requirements.txt](requirements.txt) |
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* [setup.cfg](setup.cfg) |
* [setup.cfg](setup.cfg) |
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* [setup.py](setup.py) |
* [setup.py](setup.py) |
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* [tox.ini](tox.ini) |
* [tox.ini](tox.ini) |
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* [PYTHON-MANIFEST.in](PYTHON-MANIFEST.in) |
* [PYTHON-MANIFEST.in](PYTHON-MANIFEST.in) |
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|
|
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## Ruby |
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|
* [Gemfile](Gemfile) |
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* [grpc.gemspec](grpc.gemspec) |
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* [Rakefile](Rakefile) |
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Load Diff
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Load Diff
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/*
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|
* |
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* Copyright 2015-2016, 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 |
||||||
|
* modification, are permitted provided that the following conditions are |
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|
* met: |
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|
* |
||||||
|
* * 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. |
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|
* |
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|
*/ |
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|
|
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|
#ifndef GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H |
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#define GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H |
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#include <grpc++/impl/codegen/config_protobuf.h> |
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#include <grpc++/impl/codegen/status.h> |
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#include <grpc/impl/codegen/grpc_types.h> |
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namespace grpc { |
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/// Interface between the codegen library and the minimal subset of core
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|
/// features required by the generated code.
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|
///
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|
/// All undocumented methods are simply forwarding the call to their namesakes.
|
||||||
|
/// Please refer to their corresponding documentation for details.
|
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|
///
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|
/// \warning This interface should be considered internal and private.
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|
class CoreCodegenInterface { |
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public: |
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|
// Serialize the msg into a buffer created inside the function. The caller
|
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|
// should destroy the returned buffer when done with it. If serialization
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|
// fails,
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|
// false is returned and buffer is left unchanged.
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|
virtual Status SerializeProto(const grpc::protobuf::Message& msg, |
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|
grpc_byte_buffer** buffer) = 0; |
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|
|
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|
// The caller keeps ownership of buffer and msg.
|
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|
virtual Status DeserializeProto(grpc_byte_buffer* buffer, |
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|
grpc::protobuf::Message* msg, |
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|
int max_message_size) = 0; |
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|
|
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|
/// Upon a failed assertion, log the error.
|
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|
virtual void assert_fail(const char* failed_assertion) = 0; |
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|
|
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virtual grpc_completion_queue* grpc_completion_queue_create( |
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|
void* reserved) = 0; |
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virtual void grpc_completion_queue_destroy(grpc_completion_queue* cq) = 0; |
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|
virtual grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq, |
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|
void* tag, |
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|
gpr_timespec deadline, |
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|
void* reserved) = 0; |
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|
|
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|
virtual void* gpr_malloc(size_t size) = 0; |
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|
virtual void gpr_free(void* p) = 0; |
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|
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|
virtual void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) = 0; |
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|
virtual void grpc_metadata_array_init(grpc_metadata_array* array) = 0; |
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|
virtual void grpc_metadata_array_destroy(grpc_metadata_array* array) = 0; |
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|
|
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virtual gpr_timespec gpr_inf_future(gpr_clock_type type) = 0; |
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|
}; |
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|
|
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|
extern CoreCodegenInterface* g_core_codegen_interface; |
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|
|
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|
/// Codegen specific version of \a GPR_ASSERT.
|
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|
#define GPR_CODEGEN_ASSERT(x) \ |
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|
do { \
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|
if (!(x)) { \
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|
grpc::g_core_codegen_interface->assert_fail(#x); \
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|
} \
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|
} while (0) |
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|
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|
} // namespace grpc
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|
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|
#endif // GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
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@ -0,0 +1,465 @@ |
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|
/*
|
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|
* |
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|
* Copyright 2015-2016, Google Inc. |
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|
* All rights reserved. |
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|
* |
||||||
|
* Redistribution and use in source and binary forms, with or without |
||||||
|
* modification, are permitted provided that the following conditions are |
||||||
|
* met: |
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|
* |
||||||
|
* * 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. |
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|
* |
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|
*/ |
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|
|
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|
#ifndef GRPCXX_IMPL_CODEGEN_IMPL_ASYNC_STREAM_H |
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#define GRPCXX_IMPL_CODEGEN_IMPL_ASYNC_STREAM_H |
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#include <grpc++/impl/codegen/call.h> |
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#include <grpc++/impl/codegen/channel_interface.h> |
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#include <grpc++/impl/codegen/core_codegen_interface.h> |
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#include <grpc++/impl/codegen/server_context.h> |
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#include <grpc++/impl/codegen/service_type.h> |
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#include <grpc++/impl/codegen/status.h> |
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namespace grpc { |
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class CompletionQueue; |
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/// Common interface for all client side asynchronous streaming.
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class ClientAsyncStreamingInterface { |
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public: |
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virtual ~ClientAsyncStreamingInterface() {} |
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/// Request notification of the reading of the initial metadata. Completion
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/// will be notified by \a tag on the associated completion queue.
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///
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/// \param[in] tag Tag identifying this request.
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virtual void ReadInitialMetadata(void* tag) = 0; |
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/// Request notification completion.
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///
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/// \param[out] status To be updated with the operation status.
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/// \param[in] tag Tag identifying this request.
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virtual void Finish(Status* status, void* tag) = 0; |
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}; |
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/// An interface that yields a sequence of messages of type \a R.
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template <class R> |
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class AsyncReaderInterface { |
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|
public: |
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virtual ~AsyncReaderInterface() {} |
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/// Read a message of type \a R into \a msg. Completion will be notified by \a
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/// tag on the associated completion queue.
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///
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/// \param[out] msg Where to eventually store the read message.
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/// \param[in] tag The tag identifying the operation.
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virtual void Read(R* msg, void* tag) = 0; |
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|
}; |
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/// An interface that can be fed a sequence of messages of type \a W.
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template <class W> |
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class AsyncWriterInterface { |
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|
public: |
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virtual ~AsyncWriterInterface() {} |
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/// Request the writing of \a msg with identifying tag \a tag.
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///
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/// Only one write may be outstanding at any given time. This means that
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/// after calling Write, one must wait to receive \a tag from the completion
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/// queue BEFORE calling Write again.
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///
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/// \param[in] msg The message to be written.
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/// \param[in] tag The tag identifying the operation.
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virtual void Write(const W& msg, void* tag) = 0; |
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}; |
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template <class R> |
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class ClientAsyncReaderInterface : public ClientAsyncStreamingInterface, |
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public AsyncReaderInterface<R> {}; |
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template <class R> |
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class ClientAsyncReader GRPC_FINAL : public ClientAsyncReaderInterface<R> { |
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public: |
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/// Create a stream and write the first request out.
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template <class W> |
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ClientAsyncReader(ChannelInterface* channel, CompletionQueue* cq, |
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const RpcMethod& method, ClientContext* context, |
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const W& request, void* tag) |
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: context_(context), call_(channel->CreateCall(method, context, cq)) { |
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init_ops_.set_output_tag(tag); |
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init_ops_.SendInitialMetadata(context->send_initial_metadata_); |
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// TODO(ctiller): don't assert
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|
GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok()); |
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init_ops_.ClientSendClose(); |
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call_.PerformOps(&init_ops_); |
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} |
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void ReadInitialMetadata(void* tag) GRPC_OVERRIDE { |
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GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
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meta_ops_.set_output_tag(tag); |
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meta_ops_.RecvInitialMetadata(context_); |
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call_.PerformOps(&meta_ops_); |
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} |
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void Read(R* msg, void* tag) GRPC_OVERRIDE { |
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read_ops_.set_output_tag(tag); |
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|
if (!context_->initial_metadata_received_) { |
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|
read_ops_.RecvInitialMetadata(context_); |
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|
} |
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|
read_ops_.RecvMessage(msg); |
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call_.PerformOps(&read_ops_); |
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} |
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void Finish(Status* status, void* tag) GRPC_OVERRIDE { |
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finish_ops_.set_output_tag(tag); |
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|
if (!context_->initial_metadata_received_) { |
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finish_ops_.RecvInitialMetadata(context_); |
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|
} |
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finish_ops_.ClientRecvStatus(context_, status); |
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call_.PerformOps(&finish_ops_); |
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} |
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|
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private: |
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ClientContext* context_; |
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Call call_; |
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CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose> |
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|
init_ops_; |
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CallOpSet<CallOpRecvInitialMetadata> meta_ops_; |
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CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_; |
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CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_; |
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|
}; |
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|
|
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|
/// Common interface for client side asynchronous writing.
|
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|
template <class W> |
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|
class ClientAsyncWriterInterface : public ClientAsyncStreamingInterface, |
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|
public AsyncWriterInterface<W> { |
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|
public: |
||||||
|
/// Signal the client is done with the writes.
|
||||||
|
///
|
||||||
|
/// \param[in] tag The tag identifying the operation.
|
||||||
|
virtual void WritesDone(void* tag) = 0; |
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|
}; |
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|
|
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|
template <class W> |
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|
class ClientAsyncWriter GRPC_FINAL : public ClientAsyncWriterInterface<W> { |
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|
public: |
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|
template <class R> |
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|
ClientAsyncWriter(ChannelInterface* channel, CompletionQueue* cq, |
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|
const RpcMethod& method, ClientContext* context, |
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|
R* response, void* tag) |
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|
: context_(context), call_(channel->CreateCall(method, context, cq)) { |
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|
finish_ops_.RecvMessage(response); |
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|
|
||||||
|
init_ops_.set_output_tag(tag); |
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|
init_ops_.SendInitialMetadata(context->send_initial_metadata_); |
||||||
|
call_.PerformOps(&init_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void ReadInitialMetadata(void* tag) GRPC_OVERRIDE { |
||||||
|
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
||||||
|
|
||||||
|
meta_ops_.set_output_tag(tag); |
||||||
|
meta_ops_.RecvInitialMetadata(context_); |
||||||
|
call_.PerformOps(&meta_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Write(const W& msg, void* tag) GRPC_OVERRIDE { |
||||||
|
write_ops_.set_output_tag(tag); |
||||||
|
// TODO(ctiller): don't assert
|
||||||
|
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok()); |
||||||
|
call_.PerformOps(&write_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void WritesDone(void* tag) GRPC_OVERRIDE { |
||||||
|
writes_done_ops_.set_output_tag(tag); |
||||||
|
writes_done_ops_.ClientSendClose(); |
||||||
|
call_.PerformOps(&writes_done_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Finish(Status* status, void* tag) GRPC_OVERRIDE { |
||||||
|
finish_ops_.set_output_tag(tag); |
||||||
|
if (!context_->initial_metadata_received_) { |
||||||
|
finish_ops_.RecvInitialMetadata(context_); |
||||||
|
} |
||||||
|
finish_ops_.ClientRecvStatus(context_, status); |
||||||
|
call_.PerformOps(&finish_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
private: |
||||||
|
ClientContext* context_; |
||||||
|
Call call_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata> init_ops_; |
||||||
|
CallOpSet<CallOpRecvInitialMetadata> meta_ops_; |
||||||
|
CallOpSet<CallOpSendMessage> write_ops_; |
||||||
|
CallOpSet<CallOpClientSendClose> writes_done_ops_; |
||||||
|
CallOpSet<CallOpRecvInitialMetadata, CallOpGenericRecvMessage, |
||||||
|
CallOpClientRecvStatus> |
||||||
|
finish_ops_; |
||||||
|
}; |
||||||
|
|
||||||
|
/// Client-side interface for asynchronous bi-directional streaming.
|
||||||
|
template <class W, class R> |
||||||
|
class ClientAsyncReaderWriterInterface : public ClientAsyncStreamingInterface, |
||||||
|
public AsyncWriterInterface<W>, |
||||||
|
public AsyncReaderInterface<R> { |
||||||
|
public: |
||||||
|
/// Signal the client is done with the writes.
|
||||||
|
///
|
||||||
|
/// \param[in] tag The tag identifying the operation.
|
||||||
|
virtual void WritesDone(void* tag) = 0; |
||||||
|
}; |
||||||
|
|
||||||
|
template <class W, class R> |
||||||
|
class ClientAsyncReaderWriter GRPC_FINAL |
||||||
|
: public ClientAsyncReaderWriterInterface<W, R> { |
||||||
|
public: |
||||||
|
ClientAsyncReaderWriter(ChannelInterface* channel, CompletionQueue* cq, |
||||||
|
const RpcMethod& method, ClientContext* context, |
||||||
|
void* tag) |
||||||
|
: context_(context), call_(channel->CreateCall(method, context, cq)) { |
||||||
|
init_ops_.set_output_tag(tag); |
||||||
|
init_ops_.SendInitialMetadata(context->send_initial_metadata_); |
||||||
|
call_.PerformOps(&init_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void ReadInitialMetadata(void* tag) GRPC_OVERRIDE { |
||||||
|
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
||||||
|
|
||||||
|
meta_ops_.set_output_tag(tag); |
||||||
|
meta_ops_.RecvInitialMetadata(context_); |
||||||
|
call_.PerformOps(&meta_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Read(R* msg, void* tag) GRPC_OVERRIDE { |
||||||
|
read_ops_.set_output_tag(tag); |
||||||
|
if (!context_->initial_metadata_received_) { |
||||||
|
read_ops_.RecvInitialMetadata(context_); |
||||||
|
} |
||||||
|
read_ops_.RecvMessage(msg); |
||||||
|
call_.PerformOps(&read_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Write(const W& msg, void* tag) GRPC_OVERRIDE { |
||||||
|
write_ops_.set_output_tag(tag); |
||||||
|
// TODO(ctiller): don't assert
|
||||||
|
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok()); |
||||||
|
call_.PerformOps(&write_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void WritesDone(void* tag) GRPC_OVERRIDE { |
||||||
|
writes_done_ops_.set_output_tag(tag); |
||||||
|
writes_done_ops_.ClientSendClose(); |
||||||
|
call_.PerformOps(&writes_done_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Finish(Status* status, void* tag) GRPC_OVERRIDE { |
||||||
|
finish_ops_.set_output_tag(tag); |
||||||
|
if (!context_->initial_metadata_received_) { |
||||||
|
finish_ops_.RecvInitialMetadata(context_); |
||||||
|
} |
||||||
|
finish_ops_.ClientRecvStatus(context_, status); |
||||||
|
call_.PerformOps(&finish_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
private: |
||||||
|
ClientContext* context_; |
||||||
|
Call call_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata> init_ops_; |
||||||
|
CallOpSet<CallOpRecvInitialMetadata> meta_ops_; |
||||||
|
CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_; |
||||||
|
CallOpSet<CallOpSendMessage> write_ops_; |
||||||
|
CallOpSet<CallOpClientSendClose> writes_done_ops_; |
||||||
|
CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_; |
||||||
|
}; |
||||||
|
|
||||||
|
template <class W, class R> |
||||||
|
class ServerAsyncReader GRPC_FINAL : public ServerAsyncStreamingInterface, |
||||||
|
public AsyncReaderInterface<R> { |
||||||
|
public: |
||||||
|
explicit ServerAsyncReader(ServerContext* ctx) |
||||||
|
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {} |
||||||
|
|
||||||
|
void SendInitialMetadata(void* tag) GRPC_OVERRIDE { |
||||||
|
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
||||||
|
|
||||||
|
meta_ops_.set_output_tag(tag); |
||||||
|
meta_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
call_.PerformOps(&meta_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Read(R* msg, void* tag) GRPC_OVERRIDE { |
||||||
|
read_ops_.set_output_tag(tag); |
||||||
|
read_ops_.RecvMessage(msg); |
||||||
|
call_.PerformOps(&read_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Finish(const W& msg, const Status& status, void* tag) { |
||||||
|
finish_ops_.set_output_tag(tag); |
||||||
|
if (!ctx_->sent_initial_metadata_) { |
||||||
|
finish_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
} |
||||||
|
// The response is dropped if the status is not OK.
|
||||||
|
if (status.ok()) { |
||||||
|
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, |
||||||
|
finish_ops_.SendMessage(msg)); |
||||||
|
} else { |
||||||
|
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status); |
||||||
|
} |
||||||
|
call_.PerformOps(&finish_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void FinishWithError(const Status& status, void* tag) { |
||||||
|
GPR_CODEGEN_ASSERT(!status.ok()); |
||||||
|
finish_ops_.set_output_tag(tag); |
||||||
|
if (!ctx_->sent_initial_metadata_) { |
||||||
|
finish_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
} |
||||||
|
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status); |
||||||
|
call_.PerformOps(&finish_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
private: |
||||||
|
void BindCall(Call* call) GRPC_OVERRIDE { call_ = *call; } |
||||||
|
|
||||||
|
Call call_; |
||||||
|
ServerContext* ctx_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata> meta_ops_; |
||||||
|
CallOpSet<CallOpRecvMessage<R>> read_ops_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, |
||||||
|
CallOpServerSendStatus> |
||||||
|
finish_ops_; |
||||||
|
}; |
||||||
|
|
||||||
|
template <class W> |
||||||
|
class ServerAsyncWriter GRPC_FINAL : public ServerAsyncStreamingInterface, |
||||||
|
public AsyncWriterInterface<W> { |
||||||
|
public: |
||||||
|
explicit ServerAsyncWriter(ServerContext* ctx) |
||||||
|
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {} |
||||||
|
|
||||||
|
void SendInitialMetadata(void* tag) GRPC_OVERRIDE { |
||||||
|
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
||||||
|
|
||||||
|
meta_ops_.set_output_tag(tag); |
||||||
|
meta_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
call_.PerformOps(&meta_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Write(const W& msg, void* tag) GRPC_OVERRIDE { |
||||||
|
write_ops_.set_output_tag(tag); |
||||||
|
if (!ctx_->sent_initial_metadata_) { |
||||||
|
write_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
} |
||||||
|
// TODO(ctiller): don't assert
|
||||||
|
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok()); |
||||||
|
call_.PerformOps(&write_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Finish(const Status& status, void* tag) { |
||||||
|
finish_ops_.set_output_tag(tag); |
||||||
|
if (!ctx_->sent_initial_metadata_) { |
||||||
|
finish_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
} |
||||||
|
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status); |
||||||
|
call_.PerformOps(&finish_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
private: |
||||||
|
void BindCall(Call* call) GRPC_OVERRIDE { call_ = *call; } |
||||||
|
|
||||||
|
Call call_; |
||||||
|
ServerContext* ctx_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata> meta_ops_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> write_ops_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_; |
||||||
|
}; |
||||||
|
|
||||||
|
/// Server-side interface for asynchronous bi-directional streaming.
|
||||||
|
template <class W, class R> |
||||||
|
class ServerAsyncReaderWriter GRPC_FINAL : public ServerAsyncStreamingInterface, |
||||||
|
public AsyncWriterInterface<W>, |
||||||
|
public AsyncReaderInterface<R> { |
||||||
|
public: |
||||||
|
explicit ServerAsyncReaderWriter(ServerContext* ctx) |
||||||
|
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {} |
||||||
|
|
||||||
|
void SendInitialMetadata(void* tag) GRPC_OVERRIDE { |
||||||
|
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
||||||
|
|
||||||
|
meta_ops_.set_output_tag(tag); |
||||||
|
meta_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
call_.PerformOps(&meta_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Read(R* msg, void* tag) GRPC_OVERRIDE { |
||||||
|
read_ops_.set_output_tag(tag); |
||||||
|
read_ops_.RecvMessage(msg); |
||||||
|
call_.PerformOps(&read_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Write(const W& msg, void* tag) GRPC_OVERRIDE { |
||||||
|
write_ops_.set_output_tag(tag); |
||||||
|
if (!ctx_->sent_initial_metadata_) { |
||||||
|
write_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
} |
||||||
|
// TODO(ctiller): don't assert
|
||||||
|
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok()); |
||||||
|
call_.PerformOps(&write_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
void Finish(const Status& status, void* tag) { |
||||||
|
finish_ops_.set_output_tag(tag); |
||||||
|
if (!ctx_->sent_initial_metadata_) { |
||||||
|
finish_ops_.SendInitialMetadata(ctx_->initial_metadata_); |
||||||
|
ctx_->sent_initial_metadata_ = true; |
||||||
|
} |
||||||
|
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status); |
||||||
|
call_.PerformOps(&finish_ops_); |
||||||
|
} |
||||||
|
|
||||||
|
private: |
||||||
|
friend class ::grpc::Server; |
||||||
|
|
||||||
|
void BindCall(Call* call) GRPC_OVERRIDE { call_ = *call; } |
||||||
|
|
||||||
|
Call call_; |
||||||
|
ServerContext* ctx_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata> meta_ops_; |
||||||
|
CallOpSet<CallOpRecvMessage<R>> read_ops_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> write_ops_; |
||||||
|
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_; |
||||||
|
}; |
||||||
|
|
||||||
|
} // namespace grpc
|
||||||
|
|
||||||
|
#endif // GRPCXX_IMPL_CODEGEN_IMPL_ASYNC_STREAM_H
|
||||||
@ -0,0 +1,152 @@ |
|||||||
|
/*
|
||||||
|
* |
||||||
|
* Copyright 2016, 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. |
||||||
|
* |
||||||
|
*/ |
||||||
|
|
||||||
|
#ifndef GRPCXX_IMPL_CODEGEN_IMPL_STATUS_CODE_ENUM_H |
||||||
|
#define GRPCXX_IMPL_CODEGEN_IMPL_STATUS_CODE_ENUM_H |
||||||
|
|
||||||
|
namespace grpc { |
||||||
|
|
||||||
|
enum StatusCode { |
||||||
|
/// Not an error; returned on success.
|
||||||
|
OK = 0, |
||||||
|
|
||||||
|
/// The operation was cancelled (typically by the caller).
|
||||||
|
CANCELLED = 1, |
||||||
|
|
||||||
|
/// Unknown error. An example of where this error may be returned is if a
|
||||||
|
/// Status value received from another address space belongs to an error-space
|
||||||
|
/// that is not known in this address space. Also errors raised by APIs that
|
||||||
|
/// do not return enough error information may be converted to this error.
|
||||||
|
UNKNOWN = 2, |
||||||
|
|
||||||
|
/// Client specified an invalid argument. Note that this differs from
|
||||||
|
/// FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are
|
||||||
|
/// problematic regardless of the state of the system (e.g., a malformed file
|
||||||
|
/// name).
|
||||||
|
INVALID_ARGUMENT = 3, |
||||||
|
|
||||||
|
/// Deadline expired before operation could complete. For operations that
|
||||||
|
/// change the state of the system, this error may be returned even if the
|
||||||
|
/// operation has completed successfully. For example, a successful response
|
||||||
|
/// from a server could have been delayed long enough for the deadline to
|
||||||
|
/// expire.
|
||||||
|
DEADLINE_EXCEEDED = 4, |
||||||
|
|
||||||
|
/// Some requested entity (e.g., file or directory) was not found.
|
||||||
|
NOT_FOUND = 5, |
||||||
|
|
||||||
|
/// Some entity that we attempted to create (e.g., file or directory) already
|
||||||
|
/// exists.
|
||||||
|
ALREADY_EXISTS = 6, |
||||||
|
|
||||||
|
/// The caller does not have permission to execute the specified operation.
|
||||||
|
/// PERMISSION_DENIED must not be used for rejections caused by exhausting
|
||||||
|
/// some resource (use RESOURCE_EXHAUSTED instead for those errors).
|
||||||
|
/// PERMISSION_DENIED must not be used if the caller can not be identified
|
||||||
|
/// (use UNAUTHENTICATED instead for those errors).
|
||||||
|
PERMISSION_DENIED = 7, |
||||||
|
|
||||||
|
/// The request does not have valid authentication credentials for the
|
||||||
|
/// operation.
|
||||||
|
UNAUTHENTICATED = 16, |
||||||
|
|
||||||
|
/// Some resource has been exhausted, perhaps a per-user quota, or perhaps the
|
||||||
|
/// entire file system is out of space.
|
||||||
|
RESOURCE_EXHAUSTED = 8, |
||||||
|
|
||||||
|
/// Operation was rejected because the system is not in a state required for
|
||||||
|
/// the operation's execution. For example, directory to be deleted may be
|
||||||
|
/// non-empty, an rmdir operation is applied to a non-directory, etc.
|
||||||
|
///
|
||||||
|
/// A litmus test that may help a service implementor in deciding
|
||||||
|
/// between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
|
||||||
|
/// (a) Use UNAVAILABLE if the client can retry just the failing call.
|
||||||
|
/// (b) Use ABORTED if the client should retry at a higher-level
|
||||||
|
/// (e.g., restarting a read-modify-write sequence).
|
||||||
|
/// (c) Use FAILED_PRECONDITION if the client should not retry until
|
||||||
|
/// the system state has been explicitly fixed. E.g., if an "rmdir"
|
||||||
|
/// fails because the directory is non-empty, FAILED_PRECONDITION
|
||||||
|
/// should be returned since the client should not retry unless
|
||||||
|
/// they have first fixed up the directory by deleting files from it.
|
||||||
|
/// (d) Use FAILED_PRECONDITION if the client performs conditional
|
||||||
|
/// REST Get/Update/Delete on a resource and the resource on the
|
||||||
|
/// server does not match the condition. E.g., conflicting
|
||||||
|
/// read-modify-write on the same resource.
|
||||||
|
FAILED_PRECONDITION = 9, |
||||||
|
|
||||||
|
/// The operation was aborted, typically due to a concurrency issue like
|
||||||
|
/// sequencer check failures, transaction aborts, etc.
|
||||||
|
///
|
||||||
|
/// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
|
||||||
|
/// and UNAVAILABLE.
|
||||||
|
ABORTED = 10, |
||||||
|
|
||||||
|
/// Operation was attempted past the valid range. E.g., seeking or reading
|
||||||
|
/// past end of file.
|
||||||
|
///
|
||||||
|
/// Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed
|
||||||
|
/// if the system state changes. For example, a 32-bit file system will
|
||||||
|
/// generate INVALID_ARGUMENT if asked to read at an offset that is not in the
|
||||||
|
/// range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from
|
||||||
|
/// an offset past the current file size.
|
||||||
|
///
|
||||||
|
/// There is a fair bit of overlap between FAILED_PRECONDITION and
|
||||||
|
/// OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error)
|
||||||
|
/// when it applies so that callers who are iterating through a space can
|
||||||
|
/// easily look for an OUT_OF_RANGE error to detect when they are done.
|
||||||
|
OUT_OF_RANGE = 11, |
||||||
|
|
||||||
|
/// Operation is not implemented or not supported/enabled in this service.
|
||||||
|
UNIMPLEMENTED = 12, |
||||||
|
|
||||||
|
/// Internal errors. Means some invariants expected by underlying System has
|
||||||
|
/// been broken. If you see one of these errors, Something is very broken.
|
||||||
|
INTERNAL = 13, |
||||||
|
|
||||||
|
/// The service is currently unavailable. This is a most likely a transient
|
||||||
|
/// condition and may be corrected by retrying with a backoff.
|
||||||
|
///
|
||||||
|
/// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
|
||||||
|
/// and UNAVAILABLE.
|
||||||
|
UNAVAILABLE = 14, |
||||||
|
|
||||||
|
/// Unrecoverable data loss or corruption.
|
||||||
|
DATA_LOSS = 15, |
||||||
|
|
||||||
|
/// Force users to include a default branch:
|
||||||
|
DO_NOT_USE = -1 |
||||||
|
}; |
||||||
|
|
||||||
|
} // namespace grpc
|
||||||
|
|
||||||
|
#endif // GRPCXX_IMPL_CODEGEN_IMPL_STATUS_CODE_ENUM_H
|
||||||
@ -1,244 +0,0 @@ |
|||||||
/*
|
|
||||||
* |
|
||||||
* Copyright 2015-2016, 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 "src/core/channel/client_uchannel.h" |
|
||||||
|
|
||||||
#include <string.h> |
|
||||||
|
|
||||||
#include "src/core/census/grpc_filter.h" |
|
||||||
#include "src/core/channel/channel_args.h" |
|
||||||
#include "src/core/channel/client_channel.h" |
|
||||||
#include "src/core/channel/compress_filter.h" |
|
||||||
#include "src/core/channel/subchannel_call_holder.h" |
|
||||||
#include "src/core/iomgr/iomgr.h" |
|
||||||
#include "src/core/support/string.h" |
|
||||||
#include "src/core/surface/channel.h" |
|
||||||
#include "src/core/transport/connectivity_state.h" |
|
||||||
|
|
||||||
#include <grpc/support/alloc.h> |
|
||||||
#include <grpc/support/log.h> |
|
||||||
#include <grpc/support/sync.h> |
|
||||||
#include <grpc/support/useful.h> |
|
||||||
|
|
||||||
/** Microchannel (uchannel) implementation: a lightweight channel without any
|
|
||||||
* load-balancing mechanisms meant for communication from within the core. */ |
|
||||||
|
|
||||||
typedef struct client_uchannel_channel_data { |
|
||||||
/** master channel - the grpc_channel instance that ultimately owns
|
|
||||||
this channel_data via its channel stack. |
|
||||||
We occasionally use this to bump the refcount on the master channel |
|
||||||
to keep ourselves alive through an asynchronous operation. */ |
|
||||||
grpc_channel_stack *owning_stack; |
|
||||||
|
|
||||||
/** connectivity state being tracked */ |
|
||||||
grpc_connectivity_state_tracker state_tracker; |
|
||||||
|
|
||||||
/** the subchannel wrapped by the microchannel */ |
|
||||||
grpc_connected_subchannel *connected_subchannel; |
|
||||||
|
|
||||||
/** the callback used to stay subscribed to subchannel connectivity
|
|
||||||
* notifications */ |
|
||||||
grpc_closure connectivity_cb; |
|
||||||
|
|
||||||
/** the current connectivity state of the wrapped subchannel */ |
|
||||||
grpc_connectivity_state subchannel_connectivity; |
|
||||||
|
|
||||||
gpr_mu mu_state; |
|
||||||
} channel_data; |
|
||||||
|
|
||||||
typedef grpc_subchannel_call_holder call_data; |
|
||||||
|
|
||||||
static void monitor_subchannel(grpc_exec_ctx *exec_ctx, void *arg, |
|
||||||
bool iomgr_success) { |
|
||||||
channel_data *chand = arg; |
|
||||||
grpc_connectivity_state_set(exec_ctx, &chand->state_tracker, |
|
||||||
chand->subchannel_connectivity, |
|
||||||
"uchannel_monitor_subchannel"); |
|
||||||
grpc_connected_subchannel_notify_on_state_change( |
|
||||||
exec_ctx, chand->connected_subchannel, NULL, |
|
||||||
&chand->subchannel_connectivity, &chand->connectivity_cb); |
|
||||||
} |
|
||||||
|
|
||||||
static char *cuc_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) { |
|
||||||
return grpc_subchannel_call_holder_get_peer(exec_ctx, elem->call_data); |
|
||||||
} |
|
||||||
|
|
||||||
static void cuc_start_transport_stream_op(grpc_exec_ctx *exec_ctx, |
|
||||||
grpc_call_element *elem, |
|
||||||
grpc_transport_stream_op *op) { |
|
||||||
GRPC_CALL_LOG_OP(GPR_INFO, elem, op); |
|
||||||
grpc_subchannel_call_holder_perform_op(exec_ctx, elem->call_data, op); |
|
||||||
} |
|
||||||
|
|
||||||
static void cuc_start_transport_op(grpc_exec_ctx *exec_ctx, |
|
||||||
grpc_channel_element *elem, |
|
||||||
grpc_transport_op *op) { |
|
||||||
channel_data *chand = elem->channel_data; |
|
||||||
|
|
||||||
grpc_exec_ctx_enqueue(exec_ctx, op->on_consumed, true, NULL); |
|
||||||
|
|
||||||
GPR_ASSERT(op->set_accept_stream == false); |
|
||||||
GPR_ASSERT(op->bind_pollset == NULL); |
|
||||||
|
|
||||||
if (op->on_connectivity_state_change != NULL) { |
|
||||||
grpc_connectivity_state_notify_on_state_change( |
|
||||||
exec_ctx, &chand->state_tracker, op->connectivity_state, |
|
||||||
op->on_connectivity_state_change); |
|
||||||
op->on_connectivity_state_change = NULL; |
|
||||||
op->connectivity_state = NULL; |
|
||||||
} |
|
||||||
|
|
||||||
if (op->disconnect) { |
|
||||||
grpc_connectivity_state_set(exec_ctx, &chand->state_tracker, |
|
||||||
GRPC_CHANNEL_FATAL_FAILURE, "disconnect"); |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
static int cuc_pick_subchannel(grpc_exec_ctx *exec_ctx, void *arg, |
|
||||||
grpc_metadata_batch *initial_metadata, |
|
||||||
uint32_t initial_metadata_flags, |
|
||||||
grpc_connected_subchannel **connected_subchannel, |
|
||||||
grpc_closure *on_ready) { |
|
||||||
channel_data *chand = arg; |
|
||||||
GPR_ASSERT(initial_metadata != NULL); |
|
||||||
*connected_subchannel = chand->connected_subchannel; |
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
/* Constructor for call_data */ |
|
||||||
static void cuc_init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
|
||||||
grpc_call_element_args *args) { |
|
||||||
grpc_subchannel_call_holder_init(elem->call_data, cuc_pick_subchannel, |
|
||||||
elem->channel_data, args->call_stack); |
|
||||||
} |
|
||||||
|
|
||||||
/* Destructor for call_data */ |
|
||||||
static void cuc_destroy_call_elem(grpc_exec_ctx *exec_ctx, |
|
||||||
grpc_call_element *elem) { |
|
||||||
grpc_subchannel_call_holder_destroy(exec_ctx, elem->call_data); |
|
||||||
} |
|
||||||
|
|
||||||
/* Constructor for channel_data */ |
|
||||||
static void cuc_init_channel_elem(grpc_exec_ctx *exec_ctx, |
|
||||||
grpc_channel_element *elem, |
|
||||||
grpc_channel_element_args *args) { |
|
||||||
channel_data *chand = elem->channel_data; |
|
||||||
memset(chand, 0, sizeof(*chand)); |
|
||||||
grpc_closure_init(&chand->connectivity_cb, monitor_subchannel, chand); |
|
||||||
GPR_ASSERT(args->is_last); |
|
||||||
GPR_ASSERT(elem->filter == &grpc_client_uchannel_filter); |
|
||||||
chand->owning_stack = args->channel_stack; |
|
||||||
grpc_connectivity_state_init(&chand->state_tracker, GRPC_CHANNEL_IDLE, |
|
||||||
"client_uchannel"); |
|
||||||
gpr_mu_init(&chand->mu_state); |
|
||||||
} |
|
||||||
|
|
||||||
/* Destructor for channel_data */ |
|
||||||
static void cuc_destroy_channel_elem(grpc_exec_ctx *exec_ctx, |
|
||||||
grpc_channel_element *elem) { |
|
||||||
channel_data *chand = elem->channel_data; |
|
||||||
/* cancel subscription */ |
|
||||||
grpc_connected_subchannel_notify_on_state_change( |
|
||||||
exec_ctx, chand->connected_subchannel, NULL, NULL, |
|
||||||
&chand->connectivity_cb); |
|
||||||
grpc_connectivity_state_destroy(exec_ctx, &chand->state_tracker); |
|
||||||
gpr_mu_destroy(&chand->mu_state); |
|
||||||
GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, chand->connected_subchannel, |
|
||||||
"uchannel"); |
|
||||||
} |
|
||||||
|
|
||||||
static void cuc_set_pollset(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
|
||||||
grpc_pollset *pollset) { |
|
||||||
call_data *calld = elem->call_data; |
|
||||||
calld->pollset = pollset; |
|
||||||
} |
|
||||||
|
|
||||||
const grpc_channel_filter grpc_client_uchannel_filter = { |
|
||||||
cuc_start_transport_stream_op, cuc_start_transport_op, sizeof(call_data), |
|
||||||
cuc_init_call_elem, cuc_set_pollset, cuc_destroy_call_elem, |
|
||||||
sizeof(channel_data), cuc_init_channel_elem, cuc_destroy_channel_elem, |
|
||||||
cuc_get_peer, "client-uchannel", |
|
||||||
}; |
|
||||||
|
|
||||||
grpc_connectivity_state grpc_client_uchannel_check_connectivity_state( |
|
||||||
grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect) { |
|
||||||
channel_data *chand = elem->channel_data; |
|
||||||
grpc_connectivity_state out; |
|
||||||
gpr_mu_lock(&chand->mu_state); |
|
||||||
out = grpc_connectivity_state_check(&chand->state_tracker); |
|
||||||
gpr_mu_unlock(&chand->mu_state); |
|
||||||
return out; |
|
||||||
} |
|
||||||
|
|
||||||
void grpc_client_uchannel_watch_connectivity_state( |
|
||||||
grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_pollset *pollset, |
|
||||||
grpc_connectivity_state *state, grpc_closure *on_complete) { |
|
||||||
channel_data *chand = elem->channel_data; |
|
||||||
gpr_mu_lock(&chand->mu_state); |
|
||||||
grpc_connectivity_state_notify_on_state_change( |
|
||||||
exec_ctx, &chand->state_tracker, state, on_complete); |
|
||||||
gpr_mu_unlock(&chand->mu_state); |
|
||||||
} |
|
||||||
|
|
||||||
grpc_channel *grpc_client_uchannel_create(grpc_subchannel *subchannel, |
|
||||||
grpc_channel_args *args) { |
|
||||||
grpc_channel *channel = NULL; |
|
||||||
#define MAX_FILTERS 3 |
|
||||||
const grpc_channel_filter *filters[MAX_FILTERS]; |
|
||||||
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
|
||||||
size_t n = 0; |
|
||||||
|
|
||||||
if (grpc_channel_args_is_census_enabled(args)) { |
|
||||||
filters[n++] = &grpc_client_census_filter; |
|
||||||
} |
|
||||||
filters[n++] = &grpc_compress_filter; |
|
||||||
filters[n++] = &grpc_client_uchannel_filter; |
|
||||||
GPR_ASSERT(n <= MAX_FILTERS); |
|
||||||
|
|
||||||
channel = |
|
||||||
grpc_channel_create_from_filters(&exec_ctx, NULL, filters, n, args, 1); |
|
||||||
|
|
||||||
return channel; |
|
||||||
} |
|
||||||
|
|
||||||
void grpc_client_uchannel_set_connected_subchannel( |
|
||||||
grpc_channel *uchannel, grpc_connected_subchannel *connected_subchannel) { |
|
||||||
grpc_channel_element *elem = |
|
||||||
grpc_channel_stack_last_element(grpc_channel_get_channel_stack(uchannel)); |
|
||||||
channel_data *chand = elem->channel_data; |
|
||||||
GPR_ASSERT(elem->filter == &grpc_client_uchannel_filter); |
|
||||||
gpr_mu_lock(&chand->mu_state); |
|
||||||
chand->connected_subchannel = connected_subchannel; |
|
||||||
GRPC_CONNECTED_SUBCHANNEL_REF(connected_subchannel, "uchannel"); |
|
||||||
gpr_mu_unlock(&chand->mu_state); |
|
||||||
} |
|
||||||
@ -1,211 +0,0 @@ |
|||||||
/*
|
|
||||||
* |
|
||||||
* 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 "src/core/httpcli/parser.h" |
|
||||||
|
|
||||||
#include <string.h> |
|
||||||
|
|
||||||
#include <grpc/support/alloc.h> |
|
||||||
#include <grpc/support/log.h> |
|
||||||
#include <grpc/support/useful.h> |
|
||||||
|
|
||||||
static int handle_response_line(grpc_httpcli_parser *parser) { |
|
||||||
uint8_t *beg = parser->cur_line; |
|
||||||
uint8_t *cur = beg; |
|
||||||
uint8_t *end = beg + parser->cur_line_length; |
|
||||||
|
|
||||||
if (cur == end || *cur++ != 'H') goto error; |
|
||||||
if (cur == end || *cur++ != 'T') goto error; |
|
||||||
if (cur == end || *cur++ != 'T') goto error; |
|
||||||
if (cur == end || *cur++ != 'P') goto error; |
|
||||||
if (cur == end || *cur++ != '/') goto error; |
|
||||||
if (cur == end || *cur++ != '1') goto error; |
|
||||||
if (cur == end || *cur++ != '.') goto error; |
|
||||||
if (cur == end || *cur < '0' || *cur++ > '1') goto error; |
|
||||||
if (cur == end || *cur++ != ' ') goto error; |
|
||||||
if (cur == end || *cur < '1' || *cur++ > '9') goto error; |
|
||||||
if (cur == end || *cur < '0' || *cur++ > '9') goto error; |
|
||||||
if (cur == end || *cur < '0' || *cur++ > '9') goto error; |
|
||||||
parser->r.status = |
|
||||||
(cur[-3] - '0') * 100 + (cur[-2] - '0') * 10 + (cur[-1] - '0'); |
|
||||||
if (cur == end || *cur++ != ' ') goto error; |
|
||||||
|
|
||||||
/* we don't really care about the status code message */ |
|
||||||
|
|
||||||
return 1; |
|
||||||
|
|
||||||
error: |
|
||||||
gpr_log(GPR_ERROR, "Failed parsing response line"); |
|
||||||
return 0; |
|
||||||
} |
|
||||||
|
|
||||||
static char *buf2str(void *buffer, size_t length) { |
|
||||||
char *out = gpr_malloc(length + 1); |
|
||||||
memcpy(out, buffer, length); |
|
||||||
out[length] = 0; |
|
||||||
return out; |
|
||||||
} |
|
||||||
|
|
||||||
static int add_header(grpc_httpcli_parser *parser) { |
|
||||||
uint8_t *beg = parser->cur_line; |
|
||||||
uint8_t *cur = beg; |
|
||||||
uint8_t *end = beg + parser->cur_line_length; |
|
||||||
grpc_httpcli_header hdr = {NULL, NULL}; |
|
||||||
|
|
||||||
GPR_ASSERT(cur != end); |
|
||||||
|
|
||||||
if (*cur == ' ' || *cur == '\t') { |
|
||||||
gpr_log(GPR_ERROR, "Continued header lines not supported yet"); |
|
||||||
goto error; |
|
||||||
} |
|
||||||
|
|
||||||
while (cur != end && *cur != ':') { |
|
||||||
cur++; |
|
||||||
} |
|
||||||
if (cur == end) { |
|
||||||
gpr_log(GPR_ERROR, "Didn't find ':' in header string"); |
|
||||||
goto error; |
|
||||||
} |
|
||||||
GPR_ASSERT(cur >= beg); |
|
||||||
hdr.key = buf2str(beg, (size_t)(cur - beg)); |
|
||||||
cur++; /* skip : */ |
|
||||||
|
|
||||||
while (cur != end && (*cur == ' ' || *cur == '\t')) { |
|
||||||
cur++; |
|
||||||
} |
|
||||||
GPR_ASSERT(end - cur >= 2); |
|
||||||
hdr.value = buf2str(cur, (size_t)(end - cur) - 2); |
|
||||||
|
|
||||||
if (parser->r.hdr_count == parser->hdr_capacity) { |
|
||||||
parser->hdr_capacity = |
|
||||||
GPR_MAX(parser->hdr_capacity + 1, parser->hdr_capacity * 3 / 2); |
|
||||||
parser->r.hdrs = gpr_realloc( |
|
||||||
parser->r.hdrs, parser->hdr_capacity * sizeof(*parser->r.hdrs)); |
|
||||||
} |
|
||||||
parser->r.hdrs[parser->r.hdr_count++] = hdr; |
|
||||||
return 1; |
|
||||||
|
|
||||||
error: |
|
||||||
gpr_free(hdr.key); |
|
||||||
gpr_free(hdr.value); |
|
||||||
return 0; |
|
||||||
} |
|
||||||
|
|
||||||
static int finish_line(grpc_httpcli_parser *parser) { |
|
||||||
switch (parser->state) { |
|
||||||
case GRPC_HTTPCLI_INITIAL_RESPONSE: |
|
||||||
if (!handle_response_line(parser)) { |
|
||||||
return 0; |
|
||||||
} |
|
||||||
parser->state = GRPC_HTTPCLI_HEADERS; |
|
||||||
break; |
|
||||||
case GRPC_HTTPCLI_HEADERS: |
|
||||||
if (parser->cur_line_length == 2) { |
|
||||||
parser->state = GRPC_HTTPCLI_BODY; |
|
||||||
break; |
|
||||||
} |
|
||||||
if (!add_header(parser)) { |
|
||||||
return 0; |
|
||||||
} |
|
||||||
break; |
|
||||||
case GRPC_HTTPCLI_BODY: |
|
||||||
GPR_UNREACHABLE_CODE(return 0); |
|
||||||
} |
|
||||||
|
|
||||||
parser->cur_line_length = 0; |
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
static int addbyte(grpc_httpcli_parser *parser, uint8_t byte) { |
|
||||||
switch (parser->state) { |
|
||||||
case GRPC_HTTPCLI_INITIAL_RESPONSE: |
|
||||||
case GRPC_HTTPCLI_HEADERS: |
|
||||||
if (parser->cur_line_length >= GRPC_HTTPCLI_MAX_HEADER_LENGTH) { |
|
||||||
gpr_log(GPR_ERROR, "HTTP client max line length (%d) exceeded", |
|
||||||
GRPC_HTTPCLI_MAX_HEADER_LENGTH); |
|
||||||
return 0; |
|
||||||
} |
|
||||||
parser->cur_line[parser->cur_line_length] = byte; |
|
||||||
parser->cur_line_length++; |
|
||||||
if (parser->cur_line_length >= 2 && |
|
||||||
parser->cur_line[parser->cur_line_length - 2] == '\r' && |
|
||||||
parser->cur_line[parser->cur_line_length - 1] == '\n') { |
|
||||||
return finish_line(parser); |
|
||||||
} else { |
|
||||||
return 1; |
|
||||||
} |
|
||||||
GPR_UNREACHABLE_CODE(return 0); |
|
||||||
case GRPC_HTTPCLI_BODY: |
|
||||||
if (parser->r.body_length == parser->body_capacity) { |
|
||||||
parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2); |
|
||||||
parser->r.body = |
|
||||||
gpr_realloc((void *)parser->r.body, parser->body_capacity); |
|
||||||
} |
|
||||||
parser->r.body[parser->r.body_length] = (char)byte; |
|
||||||
parser->r.body_length++; |
|
||||||
return 1; |
|
||||||
} |
|
||||||
GPR_UNREACHABLE_CODE(return 0); |
|
||||||
} |
|
||||||
|
|
||||||
void grpc_httpcli_parser_init(grpc_httpcli_parser *parser) { |
|
||||||
memset(parser, 0, sizeof(*parser)); |
|
||||||
parser->state = GRPC_HTTPCLI_INITIAL_RESPONSE; |
|
||||||
parser->r.status = 500; |
|
||||||
} |
|
||||||
|
|
||||||
void grpc_httpcli_parser_destroy(grpc_httpcli_parser *parser) { |
|
||||||
size_t i; |
|
||||||
gpr_free(parser->r.body); |
|
||||||
for (i = 0; i < parser->r.hdr_count; i++) { |
|
||||||
gpr_free(parser->r.hdrs[i].key); |
|
||||||
gpr_free(parser->r.hdrs[i].value); |
|
||||||
} |
|
||||||
gpr_free(parser->r.hdrs); |
|
||||||
} |
|
||||||
|
|
||||||
int grpc_httpcli_parser_parse(grpc_httpcli_parser *parser, gpr_slice slice) { |
|
||||||
size_t i; |
|
||||||
|
|
||||||
for (i = 0; i < GPR_SLICE_LENGTH(slice); i++) { |
|
||||||
if (!addbyte(parser, GPR_SLICE_START_PTR(slice)[i])) { |
|
||||||
return 0; |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
int grpc_httpcli_parser_eof(grpc_httpcli_parser *parser) { |
|
||||||
return parser->state == GRPC_HTTPCLI_BODY; |
|
||||||
} |
|
||||||
@ -0,0 +1,70 @@ |
|||||||
|
/*
|
||||||
|
* |
||||||
|
* Copyright 2015-2016, 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 "src/core/lib/census/grpc_plugin.h" |
||||||
|
|
||||||
|
#include <limits.h> |
||||||
|
|
||||||
|
#include <grpc/census.h> |
||||||
|
|
||||||
|
#include "src/core/lib/census/grpc_filter.h" |
||||||
|
#include "src/core/lib/channel/channel_stack_builder.h" |
||||||
|
#include "src/core/lib/surface/channel_init.h" |
||||||
|
|
||||||
|
static bool maybe_add_census_filter(grpc_channel_stack_builder *builder, |
||||||
|
void *arg_must_be_null) { |
||||||
|
const grpc_channel_args *args = |
||||||
|
grpc_channel_stack_builder_get_channel_arguments(builder); |
||||||
|
if (grpc_channel_args_is_census_enabled(args)) { |
||||||
|
return grpc_channel_stack_builder_prepend_filter( |
||||||
|
builder, &grpc_client_census_filter, NULL, NULL); |
||||||
|
} |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
void census_grpc_plugin_init(void) { |
||||||
|
/* Only initialize census if no one else has and some features are
|
||||||
|
* available. */ |
||||||
|
if (census_enabled() == CENSUS_FEATURE_NONE && |
||||||
|
census_supported() != CENSUS_FEATURE_NONE) { |
||||||
|
if (census_initialize(census_supported())) { /* enable all features. */ |
||||||
|
gpr_log(GPR_ERROR, "Could not initialize census."); |
||||||
|
} |
||||||
|
} |
||||||
|
grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, |
||||||
|
maybe_add_census_filter, NULL); |
||||||
|
grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, |
||||||
|
maybe_add_census_filter, NULL); |
||||||
|
} |
||||||
|
|
||||||
|
void census_grpc_plugin_destroy(void) { census_shutdown(); } |
||||||
@ -1,5 +1,5 @@ |
|||||||
/*
|
/*
|
||||||
* Copyright 2015, Google Inc. |
* Copyright 2015-2016, Google Inc. |
||||||
* All rights reserved. |
* All rights reserved. |
||||||
* |
* |
||||||
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
||||||
@ -1,6 +1,6 @@ |
|||||||
/*
|
/*
|
||||||
* |
* |
||||||
* Copyright 2015, Google Inc. |
* Copyright 2015-2016, Google Inc. |
||||||
* All rights reserved. |
* All rights reserved. |
||||||
* |
* |
||||||
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
||||||
@ -0,0 +1,258 @@ |
|||||||
|
/*
|
||||||
|
* |
||||||
|
* Copyright 2016, 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 "src/core/lib/channel/channel_stack_builder.h" |
||||||
|
|
||||||
|
#include <string.h> |
||||||
|
|
||||||
|
#include <grpc/support/alloc.h> |
||||||
|
|
||||||
|
int grpc_trace_channel_stack_builder = 0; |
||||||
|
|
||||||
|
typedef struct filter_node { |
||||||
|
struct filter_node *next; |
||||||
|
struct filter_node *prev; |
||||||
|
const grpc_channel_filter *filter; |
||||||
|
grpc_post_filter_create_init_func init; |
||||||
|
void *init_arg; |
||||||
|
} filter_node; |
||||||
|
|
||||||
|
struct grpc_channel_stack_builder { |
||||||
|
// sentinel nodes for filters that have been added
|
||||||
|
filter_node begin; |
||||||
|
filter_node end; |
||||||
|
// various set/get-able parameters
|
||||||
|
const grpc_channel_args *args; |
||||||
|
grpc_transport *transport; |
||||||
|
const char *name; |
||||||
|
}; |
||||||
|
|
||||||
|
struct grpc_channel_stack_builder_iterator { |
||||||
|
grpc_channel_stack_builder *builder; |
||||||
|
filter_node *node; |
||||||
|
}; |
||||||
|
|
||||||
|
grpc_channel_stack_builder *grpc_channel_stack_builder_create(void) { |
||||||
|
grpc_channel_stack_builder *b = gpr_malloc(sizeof(*b)); |
||||||
|
memset(b, 0, sizeof(*b)); |
||||||
|
|
||||||
|
b->begin.filter = NULL; |
||||||
|
b->end.filter = NULL; |
||||||
|
b->begin.next = &b->end; |
||||||
|
b->begin.prev = &b->end; |
||||||
|
b->end.next = &b->begin; |
||||||
|
b->end.prev = &b->begin; |
||||||
|
|
||||||
|
return b; |
||||||
|
} |
||||||
|
|
||||||
|
static grpc_channel_stack_builder_iterator *create_iterator_at_filter_node( |
||||||
|
grpc_channel_stack_builder *builder, filter_node *node) { |
||||||
|
grpc_channel_stack_builder_iterator *it = gpr_malloc(sizeof(*it)); |
||||||
|
it->builder = builder; |
||||||
|
it->node = node; |
||||||
|
return it; |
||||||
|
} |
||||||
|
|
||||||
|
void grpc_channel_stack_builder_iterator_destroy( |
||||||
|
grpc_channel_stack_builder_iterator *it) { |
||||||
|
gpr_free(it); |
||||||
|
} |
||||||
|
|
||||||
|
grpc_channel_stack_builder_iterator * |
||||||
|
grpc_channel_stack_builder_create_iterator_at_first( |
||||||
|
grpc_channel_stack_builder *builder) { |
||||||
|
return create_iterator_at_filter_node(builder, &builder->begin); |
||||||
|
} |
||||||
|
|
||||||
|
grpc_channel_stack_builder_iterator * |
||||||
|
grpc_channel_stack_builder_create_iterator_at_last( |
||||||
|
grpc_channel_stack_builder *builder) { |
||||||
|
return create_iterator_at_filter_node(builder, &builder->end); |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_move_next( |
||||||
|
grpc_channel_stack_builder_iterator *iterator) { |
||||||
|
if (iterator->node == &iterator->builder->end) return false; |
||||||
|
iterator->node = iterator->node->next; |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_move_prev( |
||||||
|
grpc_channel_stack_builder_iterator *iterator) { |
||||||
|
if (iterator->node == &iterator->builder->begin) return false; |
||||||
|
iterator->node = iterator->node->prev; |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_move_prev( |
||||||
|
grpc_channel_stack_builder_iterator *iterator); |
||||||
|
|
||||||
|
void grpc_channel_stack_builder_set_name(grpc_channel_stack_builder *builder, |
||||||
|
const char *name) { |
||||||
|
GPR_ASSERT(builder->name == NULL); |
||||||
|
builder->name = name; |
||||||
|
} |
||||||
|
|
||||||
|
void grpc_channel_stack_builder_set_channel_arguments( |
||||||
|
grpc_channel_stack_builder *builder, const grpc_channel_args *args) { |
||||||
|
GPR_ASSERT(builder->args == NULL); |
||||||
|
builder->args = args; |
||||||
|
} |
||||||
|
|
||||||
|
void grpc_channel_stack_builder_set_transport( |
||||||
|
grpc_channel_stack_builder *builder, grpc_transport *transport) { |
||||||
|
GPR_ASSERT(builder->transport == NULL); |
||||||
|
builder->transport = transport; |
||||||
|
} |
||||||
|
|
||||||
|
grpc_transport *grpc_channel_stack_builder_get_transport( |
||||||
|
grpc_channel_stack_builder *builder) { |
||||||
|
return builder->transport; |
||||||
|
} |
||||||
|
|
||||||
|
const grpc_channel_args *grpc_channel_stack_builder_get_channel_arguments( |
||||||
|
grpc_channel_stack_builder *builder) { |
||||||
|
return builder->args; |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_append_filter( |
||||||
|
grpc_channel_stack_builder *builder, const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, void *user_data) { |
||||||
|
grpc_channel_stack_builder_iterator *it = |
||||||
|
grpc_channel_stack_builder_create_iterator_at_last(builder); |
||||||
|
bool ok = grpc_channel_stack_builder_add_filter_before( |
||||||
|
it, filter, post_init_func, user_data); |
||||||
|
grpc_channel_stack_builder_iterator_destroy(it); |
||||||
|
return ok; |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_prepend_filter( |
||||||
|
grpc_channel_stack_builder *builder, const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, void *user_data) { |
||||||
|
grpc_channel_stack_builder_iterator *it = |
||||||
|
grpc_channel_stack_builder_create_iterator_at_first(builder); |
||||||
|
bool ok = grpc_channel_stack_builder_add_filter_after( |
||||||
|
it, filter, post_init_func, user_data); |
||||||
|
grpc_channel_stack_builder_iterator_destroy(it); |
||||||
|
return ok; |
||||||
|
} |
||||||
|
|
||||||
|
static void add_after(filter_node *before, const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, |
||||||
|
void *user_data) { |
||||||
|
filter_node *new = gpr_malloc(sizeof(*new)); |
||||||
|
new->next = before->next; |
||||||
|
new->prev = before; |
||||||
|
new->next->prev = new->prev->next = new; |
||||||
|
new->filter = filter; |
||||||
|
new->init = post_init_func; |
||||||
|
new->init_arg = user_data; |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_add_filter_before( |
||||||
|
grpc_channel_stack_builder_iterator *iterator, |
||||||
|
const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, void *user_data) { |
||||||
|
if (iterator->node == &iterator->builder->begin) return false; |
||||||
|
add_after(iterator->node->prev, filter, post_init_func, user_data); |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
bool grpc_channel_stack_builder_add_filter_after( |
||||||
|
grpc_channel_stack_builder_iterator *iterator, |
||||||
|
const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, void *user_data) { |
||||||
|
if (iterator->node == &iterator->builder->end) return false; |
||||||
|
add_after(iterator->node, filter, post_init_func, user_data); |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder) { |
||||||
|
filter_node *p = builder->begin.next; |
||||||
|
while (p != &builder->end) { |
||||||
|
filter_node *next = p->next; |
||||||
|
gpr_free(p); |
||||||
|
p = next; |
||||||
|
} |
||||||
|
gpr_free(builder); |
||||||
|
} |
||||||
|
|
||||||
|
void *grpc_channel_stack_builder_finish(grpc_exec_ctx *exec_ctx, |
||||||
|
grpc_channel_stack_builder *builder, |
||||||
|
size_t prefix_bytes, int initial_refs, |
||||||
|
grpc_iomgr_cb_func destroy, |
||||||
|
void *destroy_arg) { |
||||||
|
// count the number of filters
|
||||||
|
size_t num_filters = 0; |
||||||
|
for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) { |
||||||
|
num_filters++; |
||||||
|
} |
||||||
|
|
||||||
|
// create an array of filters
|
||||||
|
const grpc_channel_filter **filters = |
||||||
|
gpr_malloc(sizeof(*filters) * num_filters); |
||||||
|
size_t i = 0; |
||||||
|
for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) { |
||||||
|
filters[i++] = p->filter; |
||||||
|
} |
||||||
|
|
||||||
|
// calculate the size of the channel stack
|
||||||
|
size_t channel_stack_size = grpc_channel_stack_size(filters, num_filters); |
||||||
|
|
||||||
|
// allocate memory, with prefix_bytes followed by channel_stack_size
|
||||||
|
char *result = gpr_malloc(prefix_bytes + channel_stack_size); |
||||||
|
// fetch a pointer to the channel stack
|
||||||
|
grpc_channel_stack *channel_stack = |
||||||
|
(grpc_channel_stack *)(result + prefix_bytes); |
||||||
|
// and initialize it
|
||||||
|
grpc_channel_stack_init(exec_ctx, initial_refs, destroy, |
||||||
|
destroy_arg == NULL ? result : destroy_arg, filters, |
||||||
|
num_filters, builder->args, builder->name, |
||||||
|
channel_stack); |
||||||
|
|
||||||
|
// run post-initialization functions
|
||||||
|
i = 0; |
||||||
|
for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) { |
||||||
|
if (p->init != NULL) { |
||||||
|
p->init(channel_stack, grpc_channel_stack_element(channel_stack, i), |
||||||
|
p->init_arg); |
||||||
|
} |
||||||
|
i++; |
||||||
|
} |
||||||
|
|
||||||
|
grpc_channel_stack_builder_destroy(builder); |
||||||
|
gpr_free((grpc_channel_filter **)filters); |
||||||
|
|
||||||
|
return result; |
||||||
|
} |
||||||
@ -0,0 +1,155 @@ |
|||||||
|
/*
|
||||||
|
* |
||||||
|
* Copyright 2016, 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. |
||||||
|
* |
||||||
|
*/ |
||||||
|
|
||||||
|
#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H |
||||||
|
#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H |
||||||
|
|
||||||
|
#include <stdbool.h> |
||||||
|
|
||||||
|
#include "src/core/lib/channel/channel_args.h" |
||||||
|
#include "src/core/lib/channel/channel_stack.h" |
||||||
|
|
||||||
|
/// grpc_channel_stack_builder offers a programmatic interface to selected
|
||||||
|
/// and order channel filters
|
||||||
|
typedef struct grpc_channel_stack_builder grpc_channel_stack_builder; |
||||||
|
typedef struct grpc_channel_stack_builder_iterator |
||||||
|
grpc_channel_stack_builder_iterator; |
||||||
|
|
||||||
|
/// Create a new channel stack builder
|
||||||
|
grpc_channel_stack_builder *grpc_channel_stack_builder_create(void); |
||||||
|
|
||||||
|
/// Assign a name to the channel stack: \a name must be statically allocated
|
||||||
|
void grpc_channel_stack_builder_set_name(grpc_channel_stack_builder *builder, |
||||||
|
const char *name); |
||||||
|
|
||||||
|
/// Attach \a transport to the builder (does not take ownership)
|
||||||
|
void grpc_channel_stack_builder_set_transport( |
||||||
|
grpc_channel_stack_builder *builder, grpc_transport *transport); |
||||||
|
|
||||||
|
/// Fetch attached transport
|
||||||
|
grpc_transport *grpc_channel_stack_builder_get_transport( |
||||||
|
grpc_channel_stack_builder *builder); |
||||||
|
|
||||||
|
/// Set channel arguments: \a args must continue to exist until after
|
||||||
|
/// grpc_channel_stack_builder_finish returns
|
||||||
|
void grpc_channel_stack_builder_set_channel_arguments( |
||||||
|
grpc_channel_stack_builder *builder, const grpc_channel_args *args); |
||||||
|
|
||||||
|
/// Return a borrowed pointer to the channel arguments
|
||||||
|
const grpc_channel_args *grpc_channel_stack_builder_get_channel_arguments( |
||||||
|
grpc_channel_stack_builder *builder); |
||||||
|
|
||||||
|
/// Begin iterating over already defined filters in the builder at the beginning
|
||||||
|
grpc_channel_stack_builder_iterator * |
||||||
|
grpc_channel_stack_builder_create_iterator_at_first( |
||||||
|
grpc_channel_stack_builder *builder); |
||||||
|
|
||||||
|
/// Begin iterating over already defined filters in the builder at the end
|
||||||
|
grpc_channel_stack_builder_iterator * |
||||||
|
grpc_channel_stack_builder_create_iterator_at_last( |
||||||
|
grpc_channel_stack_builder *builder); |
||||||
|
|
||||||
|
/// Is an iterator at the first element?
|
||||||
|
bool grpc_channel_stack_builder_iterator_is_first( |
||||||
|
grpc_channel_stack_builder_iterator *iterator); |
||||||
|
|
||||||
|
/// Is an iterator at the end?
|
||||||
|
bool grpc_channel_stack_builder_iterator_is_end( |
||||||
|
grpc_channel_stack_builder_iterator *iterator); |
||||||
|
|
||||||
|
/// Move an iterator to the next item
|
||||||
|
bool grpc_channel_stack_builder_move_next( |
||||||
|
grpc_channel_stack_builder_iterator *iterator); |
||||||
|
|
||||||
|
/// Move an iterator to the previous item
|
||||||
|
bool grpc_channel_stack_builder_move_prev( |
||||||
|
grpc_channel_stack_builder_iterator *iterator); |
||||||
|
|
||||||
|
typedef void (*grpc_post_filter_create_init_func)( |
||||||
|
grpc_channel_stack *channel_stack, grpc_channel_element *elem, void *arg); |
||||||
|
|
||||||
|
/// Add \a filter to the stack, after \a iterator.
|
||||||
|
/// Call \a post_init_func(..., \a user_data) once the channel stack is
|
||||||
|
/// created.
|
||||||
|
bool grpc_channel_stack_builder_add_filter_after( |
||||||
|
grpc_channel_stack_builder_iterator *iterator, |
||||||
|
const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, |
||||||
|
void *user_data) GRPC_MUST_USE_RESULT; |
||||||
|
|
||||||
|
/// Add \a filter to the stack, before \a iterator.
|
||||||
|
/// Call \a post_init_func(..., \a user_data) once the channel stack is
|
||||||
|
/// created.
|
||||||
|
bool grpc_channel_stack_builder_add_filter_before( |
||||||
|
grpc_channel_stack_builder_iterator *iterator, |
||||||
|
const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, |
||||||
|
void *user_data) GRPC_MUST_USE_RESULT; |
||||||
|
|
||||||
|
/// Add \a filter to the beginning of the filter list.
|
||||||
|
/// Call \a post_init_func(..., \a user_data) once the channel stack is
|
||||||
|
/// created.
|
||||||
|
bool grpc_channel_stack_builder_prepend_filter( |
||||||
|
grpc_channel_stack_builder *builder, const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, |
||||||
|
void *user_data) GRPC_MUST_USE_RESULT; |
||||||
|
|
||||||
|
/// Add \a filter to the end of the filter list.
|
||||||
|
/// Call \a post_init_func(..., \a user_data) once the channel stack is
|
||||||
|
/// created.
|
||||||
|
bool grpc_channel_stack_builder_append_filter( |
||||||
|
grpc_channel_stack_builder *builder, const grpc_channel_filter *filter, |
||||||
|
grpc_post_filter_create_init_func post_init_func, |
||||||
|
void *user_data) GRPC_MUST_USE_RESULT; |
||||||
|
|
||||||
|
/// Terminate iteration and destroy \a iterator
|
||||||
|
void grpc_channel_stack_builder_iterator_destroy( |
||||||
|
grpc_channel_stack_builder_iterator *iterator); |
||||||
|
|
||||||
|
/// Destroy the builder, return the freshly minted channel stack
|
||||||
|
/// Allocates \a prefix_bytes bytes before the channel stack
|
||||||
|
/// Returns the base pointer of the allocated block
|
||||||
|
/// \a initial_refs, \a destroy, \a destroy_arg are as per
|
||||||
|
/// grpc_channel_stack_init
|
||||||
|
void *grpc_channel_stack_builder_finish(grpc_exec_ctx *exec_ctx, |
||||||
|
grpc_channel_stack_builder *builder, |
||||||
|
size_t prefix_bytes, int initial_refs, |
||||||
|
grpc_iomgr_cb_func destroy, |
||||||
|
void *destroy_arg); |
||||||
|
|
||||||
|
/// Destroy the builder without creating a channel stack
|
||||||
|
void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder); |
||||||
|
|
||||||
|
extern int grpc_trace_channel_stack_builder; |
||||||
|
|
||||||
|
#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H */ |
||||||
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