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// Generates Java gRPC service interface out of Protobuf IDL.
//
// This is a Proto2 compiler plugin. See net/proto2/compiler/proto/plugin.proto
// and net/proto2/compiler/public/plugin.h for more information on plugins.
#include <memory>
#include "java_generator.h"
#include <google/protobuf/compiler/code_generator.h>
#include <google/protobuf/compiler/plugin.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/io/zero_copy_stream.h>
static string JavaPackageToDir(const string& package_name) {
string package_dir = package_name;
for (size_t i = 0; i < package_dir.size(); ++i) {
if (package_dir[i] == '.') {
package_dir[i] = '/';
}
}
if (!package_dir.empty()) package_dir += "/";
return package_dir;
}
class JavaGrpcGenerator : public google::protobuf::compiler::CodeGenerator {
public:
JavaGrpcGenerator() {}
virtual ~JavaGrpcGenerator() {}
virtual bool Generate(const google::protobuf::FileDescriptor* file,
const string& parameter,
google::protobuf::compiler::GeneratorContext* context,
string* error) const {
std::vector<std::pair<string, string> > options;
google::protobuf::compiler::ParseGeneratorParameter(parameter, &options);
java_grpc_generator::ProtoFlavor flavor =
java_grpc_generator::ProtoFlavor::NORMAL;
bool enable_deprecated = false;
for (int i = 0; i < options.size(); i++) {
if (options[i].first == "nano") {
flavor = java_grpc_generator::ProtoFlavor::NANO;
} else if (options[i].first == "lite") {
flavor = java_grpc_generator::ProtoFlavor::LITE;
} else if (options[i].first == "enable_deprecated") {
enable_deprecated = options[i].second == "true";
}
}
string package_name = java_grpc_generator::ServiceJavaPackage(
file, flavor == java_grpc_generator::ProtoFlavor::NANO);
string package_filename = JavaPackageToDir(package_name);
for (int i = 0; i < file->service_count(); ++i) {
const google::protobuf::ServiceDescriptor* service = file->service(i);
string filename = package_filename
+ java_grpc_generator::ServiceClassName(service) + ".java";
std::unique_ptr<google::protobuf::io::ZeroCopyOutputStream> output(
context->Open(filename));
java_grpc_generator::GenerateService(service, output.get(), flavor, enable_deprecated);
}
return true;
}
};
int main(int argc, char* argv[]) {
JavaGrpcGenerator generator;
return google::protobuf::compiler::PluginMain(argc, argv, &generator);
}
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