Hi All,
I have a simple .proto file
syntax = "proto3";
package helloworld.v1;
option java_package = "helloworld.v1";
option java_multiple_files = true;
import "google/api/annotations.proto";
service HelloWorldService {
rpc sayHello (SayHelloRequest) returns (SayHelloResponse) {
option (google.api.http) = {
post: "/v1/example/echo"
body: "*"
};
}
}
message SayHelloRequest {
string favourite_thing = 1;
}
message SayHelloResponse {
string reply = 1;
}
I am generating a proto descriptor set from it using the proto compiler.
After that I am trying to read the proto descriptor programatically in the
java code like this
FileDescriptorSet Hello = FileDescriptorSet.parseFrom(new
FileInputStream(new File("D:\\temp\\descriptor\\Hello.pb")));
FileDescriptorSet Annotations = FileDescriptorSet.parseFrom(new
FileInputStream(new File("D:\\temp\\descriptor\\annotations.pb")));
FileDescriptorSet Http = FileDescriptorSet.parseFrom(new
FileInputStream(new File("D:\\temp\\descriptor\\http.pb")));
FileDescriptorSet Descriptor = FileDescriptorSet.parseFrom(new
FileInputStream(new File("D:\\temp\\descriptor\\descriptor.pb")));
FileDescriptor httpD = FileDescriptor.buildFrom(Http.getFile(0), new
FileDescriptor[] {}, true);
FileDescriptor descriptorD =
FileDescriptor.buildFrom(Descriptor.getFile(0), new FileDescriptor[] {},
true);
FileDescriptor annotationsD =
FileDescriptor.buildFrom(Annotations.getFile(0), new FileDescriptor[]
{httpD, descriptorD});
ExtensionRegistry registry = ExtensionRegistry.newInstance();
FieldDescriptor httpFD = annotationsD.findExtensionByName("http");
Message httpRuleM =
DynamicMessage.newBuilder(httpD.findMessageTypeByName("HttpRule")).build();
registry.add(httpFD, httpRuleM);
FileDescriptor helloD = FileDescriptor.buildFrom(Hello.getFile(0), new
FileDescriptor[] {annotationsD});
FileDescriptor.internalUpdateFileDescriptor(helloD, registry);
helloD.findServiceByName("HelloWorldService").findMethodByName("sayHello").getOptions();
The api call in the last line puts the "http" in the unknown field, and the
reason is because its a custom option and not registered. But as you can
see I am doing that.
Can someone please guide me on what am I doing wrong?
Thanks!
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