Import the sources for the grpc java plugin
This is a copy of the relevant sources from
https://github.com/grpc/grpc-java/ version 0.15.0
to build the grpc-java plugin.
Change-Id: Ideaf6406d8c54eaf98d0cedf74af604061622c3e
diff --git a/third_party/grpc/compiler/src/java_plugin/cpp/java_plugin.cpp b/third_party/grpc/compiler/src/java_plugin/cpp/java_plugin.cpp
new file mode 100644
index 0000000..5b4b190
--- /dev/null
+++ b/third_party/grpc/compiler/src/java_plugin/cpp/java_plugin.cpp
@@ -0,0 +1,66 @@
+// 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/descriptor.pb.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 {
+ vector<pair<string, string> > options;
+ google::protobuf::compiler::ParseGeneratorParameter(parameter, &options);
+
+ java_grpc_generator::ProtoFlavor flavor =
+ java_grpc_generator::ProtoFlavor::NORMAL;
+ 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;
+ }
+ }
+
+ 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);
+ }
+ return true;
+ }
+};
+
+int main(int argc, char* argv[]) {
+ JavaGrpcGenerator generator;
+ return google::protobuf::compiler::PluginMain(argc, argv, &generator);
+}
