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/*
*
* 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.
*
*/
// Generates a Python gRPC service interface out of Protobuf IDL.
#include <memory>
#include <string>
#include "src/compiler/python_generator.h"
#include <google/protobuf/compiler/code_generator.h>
#include <google/protobuf/compiler/plugin.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/descriptor.h>
using google::protobuf::FileDescriptor;
using google::protobuf::compiler::CodeGenerator;
using google::protobuf::compiler::GeneratorContext;
using google::protobuf::compiler::PluginMain;
using google::protobuf::io::CodedOutputStream;
using google::protobuf::io::ZeroCopyOutputStream;
using std::string;
class PythonGrpcGenerator : public CodeGenerator {
public:
PythonGrpcGenerator() {}
~PythonGrpcGenerator() override {}
bool Generate(const FileDescriptor* file,
const string& parameter,
GeneratorContext* context,
string* error) const override {
// Get output file name.
string file_name;
static const int proto_suffix_length = 6; // length of ".proto"
if (file->name().size() > static_cast<size_t>(proto_suffix_length) &&
file->name().find_last_of(".proto") == file->name().size() - 1) {
file_name = file->name().substr(
0, file->name().size() - proto_suffix_length) + "_pb2.py";
} else {
*error = "Invalid proto file name. Proto file must end with .proto";
return false;
}
std::unique_ptr<ZeroCopyOutputStream> output(
context->OpenForInsert(file_name, "module_scope"));
CodedOutputStream coded_out(output.get());
string code = grpc_python_generator::GetServices(file);
coded_out.WriteRaw(code.data(), code.size());
return true;
}
};
int main(int argc, char* argv[]) {
PythonGrpcGenerator generator;
return PluginMain(argc, argv, &generator);
}
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