@Override
public TypeSpec.Builder newServiceClassBuilder(final ServiceDescriptorProto serviceProto) {
    final String className = deconflictJavaTypeName(sanitizeClassName(serviceProto.getName()));

    final TypeSpec.Builder builder = TypeSpec.classBuilder(className)
            .addModifiers(PUBLIC, FINAL)
            .addMethod(constructorBuilder()
                    .addModifiers(PRIVATE)
                    .addComment("no instances")
                    .build());

    if (deprecated || serviceProto.hasOptions() && serviceProto.getOptions().hasDeprecated() &&
            serviceProto.getOptions().getDeprecated()) {
        builder.addAnnotation(Deprecated.class);
    }

    serviceClassBuilders.add(builder);
    return builder;
}
 

void generate(final ServiceDescriptorProto serviceProto) {
    final State state = new State(serviceProto);
    final TypeSpec.Builder serviceClassBuilder = context.newServiceClassBuilder(serviceProto);

    addSerializationProviderInit(state, serviceClassBuilder);

    addServiceRpcInterfaces(state, serviceClassBuilder);
    addServiceInterfaces(state, serviceClassBuilder);
    addServiceFilter(state, serviceClassBuilder);
    addServiceFilterFactory(state, serviceClassBuilder);
    addServiceFactory(state, serviceClassBuilder);

    addClientMetadata(state, serviceClassBuilder);
    addClientInterfaces(state, serviceClassBuilder);
    addClientFilter(state, serviceClassBuilder);
    addClientFilterFactory(state, serviceClassBuilder);
    addClientFactory(state, serviceClassBuilder);
}
 

private ServiceDescriptor(final ServiceDescriptorProto proto,
                          final FileDescriptor file,
                          final int index)
                   throws DescriptorValidationException {
  this.index = index;
  this.proto = proto;
  fullName = computeFullName(file, null, proto.getName());
  this.file = file;

  methods = new MethodDescriptor[proto.getMethodCount()];
  for (int i = 0; i < proto.getMethodCount(); i++) {
    methods[i] = new MethodDescriptor(
      proto.getMethod(i), file, this, i);
  }

  file.pool.addSymbol(this);
}
 

public void decompile(FileDescriptorProto fileDescriptor) throws IOException {
    if (fileDescriptor.hasPackage()) {
        indentedFormat("package %s;", fileDescriptor.getPackage());
        absolutePackage = "." + fileDescriptor.getPackage() + ".";
    }
    for (String dependency : fileDescriptor.getDependencyList()) {
        indentedFormat("import \"%s\";", dependency);
    }
    if (fileDescriptor.hasOptions()) {
        decompileOptions(fileDescriptor.getOptions());
    }
    decompileMembers(fileDescriptor.getEnumTypeList(),
                     fileDescriptor.getMessageTypeList(),
                     Collections.<FieldDescriptorProto>emptyList(),
                     Collections.<DescriptorProto.ExtensionRange>emptyList(),
                     fileDescriptor.getExtensionList());
    for (ServiceDescriptorProto serviceDescriptor : fileDescriptor.getServiceList()) {
        decompile(serviceDescriptor);
    }
    newline();
    flush();
}
 

protected void decompile(ServiceDescriptorProto serviceDescriptor) throws IOException {
    indentedFormat("service %s {", serviceDescriptor.getName());
    indent++;
    if (serviceDescriptor.hasOptions()) {
        decompileOptions(serviceDescriptor.getOptions());
    }
    for (MethodDescriptorProto methodDescriptor : serviceDescriptor.getMethodList()) {
        indentedFormat("rpc %s (%s) returns (%s)",
                       methodDescriptor.getName(), methodDescriptor.getInputType(), methodDescriptor.getOutputType());
        if (methodDescriptor.hasOptions()) {
            write("{ ");
            indent++;
            decompileOptions(methodDescriptor.getOptions());
            indent--;
            indentedFormat("}");
        }
        else {
            write(";");
        }
    }
    indent--;
    indentedFormat("}");
}
 

@Nullable
private static String getFullName(FileDescriptorProto descriptor, List<Integer> path) {
    String fullNameSoFar = descriptor.getPackage();
    switch (path.get(0)) {
        case FileDescriptorProto.MESSAGE_TYPE_FIELD_NUMBER:
            final DescriptorProto message = descriptor.getMessageType(path.get(1));
            return appendMessageToFullName(message, path, fullNameSoFar);
        case FileDescriptorProto.ENUM_TYPE_FIELD_NUMBER:
            final EnumDescriptorProto enumDescriptor = descriptor.getEnumType(path.get(1));
            return appendEnumToFullName(enumDescriptor, path, fullNameSoFar);
        case FileDescriptorProto.SERVICE_FIELD_NUMBER:
            final ServiceDescriptorProto serviceDescriptor = descriptor.getService(path.get(1));
            fullNameSoFar = appendNameComponent(fullNameSoFar, serviceDescriptor.getName());
            if (path.size() > 2) {
                fullNameSoFar = appendFieldComponent(
                        fullNameSoFar, serviceDescriptor.getMethod(path.get(3)).getName());
            }
            return fullNameSoFar;
        default:
            return null;
    }
}
 

@Override
public String methodPath(final ServiceDescriptorProto serviceProto, final MethodDescriptorProto methodProto) {
    final StringBuilder sb = new StringBuilder(128).append('/');
    if (isNotNullNorEmpty(protoPackageName)) {
        sb.append(protoPackageName).append('.');
    }
    sb.append(serviceProto.getName()).append('/').append(methodProto.getName());
    return sb.toString();
}
 

private ServiceContext buildServiceContext(ServiceDescriptorProto serviceProto, ProtoTypeMap typeMap, List<Location> locations, int serviceNumber) {
    ServiceContext serviceContext = new ServiceContext();
    serviceContext.fileName = getClassPrefix() + serviceProto.getName() + "Grpc.java";
    serviceContext.className = getClassPrefix() + serviceProto.getName() + "Grpc";
    serviceContext.serviceName = serviceProto.getName();
    serviceContext.deprecated = serviceProto.getOptions() != null && serviceProto.getOptions().getDeprecated();

    List<Location> allLocationsForService = locations.stream()
            .filter(location ->
                location.getPathCount() >= 2 &&
                   location.getPath(0) == FileDescriptorProto.SERVICE_FIELD_NUMBER &&
                   location.getPath(1) == serviceNumber
            )
            .collect(Collectors.toList());

    Location serviceLocation = allLocationsForService.stream()
            .filter(location -> location.getPathCount() == SERVICE_NUMBER_OF_PATHS)
            .findFirst()
            .orElseGet(Location::getDefaultInstance);
    serviceContext.javaDoc = getJavaDoc(getComments(serviceLocation), getServiceJavaDocPrefix());

    for (int methodNumber = 0; methodNumber < serviceProto.getMethodCount(); methodNumber++) {
        MethodContext methodContext = buildMethodContext(
            serviceProto.getMethod(methodNumber),
            typeMap,
            locations,
            methodNumber
        );

        serviceContext.methods.add(methodContext);
    }
    return serviceContext;
}
 

private void doPrint(FileDescriptorProto fdp, String javaPackage, String outerClassName) {
  List<DescriptorProto> messageDescList = Lists.newArrayList(fdp.getMessageTypeList());
  List<ServiceDescriptorProto> serviceDescList = Lists.newArrayList(fdp.getServiceList());
  List<EnumDescriptorProto> enumDescList = Lists.newArrayList(fdp.getEnumTypeList());
  messageDescList.stream().filter(temp -> temp.getEnumTypeList() != null)
      .forEach(temp -> enumDescList.addAll(temp.getEnumTypeList()));
  printEnum(enumDescList, javaPackage, outerClassName);
  printMessage(messageDescList, javaPackage, outerClassName);
  printService(serviceDescList, javaPackage);
}
 

private void printService(List<ServiceDescriptorProto> serviceDescList, String javaPackage) {
  for (ServiceDescriptorProto serviceDesc : serviceDescList) {
    PrintServiceFile serviceFile =
        new PrintServiceFile(generatePath, javaPackage, serviceDesc.getName());
    try {
      serviceFile.setServiceMethods(serviceDesc.getMethodList());
      serviceFile.setPojoTypeCache(pojoTypes);
    } finally {
      serviceFile.print();
    }
  }
}
 

private ServiceDescriptorProto generateApi(Api api) {
  ServiceDescriptorProto.Builder builder = ServiceDescriptorProto.newBuilder();
  builder.setName(getSimpleName(api.getName()));
  for (Method method : api.getMethodsList()) {
    builder.addMethod(generateMethod(method));
  }
  if (!api.getOptionsList().isEmpty()) {
    builder.setOptions(generateServiceOptions(api));
  }
  return builder.build();
}
 

private Interface(ProtoFile parent, ServiceDescriptorProto proto, String path) {
  super(parent, proto.getName(), path);
  this.proto = proto;

  // Build methods.
  ImmutableList.Builder<Method> methodsBuilder = ImmutableList.builder();
  List<MethodDescriptorProto> methodProtos = proto.getMethodList();
  for (int i = 0; i < methodProtos.size(); i++) {
    String childPath = buildPath(path, ServiceDescriptorProto.METHOD_FIELD_NUMBER, i);
    methodsBuilder.add(Method.create(this, methodProtos.get(i), childPath));
  }

  methods = methodsBuilder.build();
}
 

@Accepts
protected void accept(ServiceDescriptorProto.Builder service) {
  pushParent(BuilderVisitorNodeInfo.create(service, currentFile));
  visitRepeated(ServiceDescriptorProto.METHOD_FIELD_NUMBER);
  visit(service.getOptionsBuilder());
  popExpectedParent(service);
}
 

/** See {@link FileDescriptor#setProto}. */
private void setProto(final ServiceDescriptorProto proto) {
  this.proto = proto;

  for (int i = 0; i < methods.length; i++) {
    methods[i].setProto(proto.getMethod(i));
  }
}
 

List<ServiceDescriptorProto> protoServices() {
    return protoFile.getServiceList();
}
 

private State(final ServiceDescriptorProto serviceProto) {
    this.serviceProto = serviceProto;
}
 

private static String serviceFactoryBuilderInitChain(final ServiceDescriptorProto serviceProto,
                                                     final boolean blocking) {
    return serviceProto.getMethodList().stream()
            .map(methodProto -> routeName(methodProto) + (blocking ? Blocking : "") + '(' + service + ')')
            .collect(joining("."));
}
 

public static List<Option> getOptions(ServiceDescriptorProto descriptor) {
  return getOptions(descriptor, true);
}
 

public static List<Option> getOptions(ServiceDescriptorProto descriptor, boolean withDefaults) {
  return toCoreOptions(maybeCombineOptionsWithDefault(withDefaults,
      descriptor.getOptions().getAllFields(), DEFAULT_SERVICE_OPTIONS));
}
 

/**
 * Creates a interface backed up by the given proto.
 */
public static Interface create(ProtoFile parent, ServiceDescriptorProto proto, String path) {
  return new Interface(parent, proto, path);
}
 

/**
 * Returns the underlying proto representation.
 */
public ServiceDescriptorProto getProto() {
  return proto;
}
 

private void restify(MethodKind httpKind, String simpleName, String template) {
  Model model = Model.create(FileDescriptorSet.getDefaultInstance());

  model.setServiceConfig(
      ConfigSource.newBuilder(Service.getDefaultInstance())
          .setValue(
              Service.getDescriptor().findFieldByNumber(Service.CONFIG_VERSION_FIELD_NUMBER),
              null,
              UInt32Value.newBuilder().setValue(configVersion).build(),
              new SimpleLocation("from test"))
          .build());
  HttpConfigAspect aspect = HttpConfigAspect.create(model);
  ProtoFile file =
      ProtoFile.create(
          model, FileDescriptorProto.getDefaultInstance(), true, ExtensionPool.EMPTY);
  Interface iface = Interface.create(file, ServiceDescriptorProto.getDefaultInstance(), "");
  Method method =
      Method.create(iface, MethodDescriptorProto.newBuilder().setName(simpleName).build(), "");
  RestMethod restMethod;
  ImmutableList<PathSegment> path = parse(model, template);
  if (!model.getDiagReporter().getDiagCollector().getDiags().isEmpty()) {
    restMethod = RestMethod.create(method, RestKind.CUSTOM, "*error*", "*error*", null);
  } else {
    HttpRule httpRule = HttpRule.getDefaultInstance();
    HttpAttribute httpConfig =
        new HttpAttribute(
            httpRule,
            httpKind,
            MessageType.create(file, Empty.getDescriptor().toProto(), "", ExtensionPool.EMPTY),
            path,
            "",
            false,
            ImmutableList.<HttpAttribute>of(),
            false);
    RestAnalyzer analyzer = new RestAnalyzer(aspect);
    restMethod = analyzer.analyzeMethod(method, httpConfig);
  }

  PrintWriter pw = testOutput();
  pw.print(httpKind.toString());
  pw.print(" ");
  pw.print(simpleName);
  pw.print(" ");
  pw.print(template.isEmpty() ? "(empty)" : template);
  pw.println();
  pw.println(Strings.repeat("=", 70));
  pw.printf("Rest Kind:   %s\n", restMethod.getRestKind());
  pw.printf(
      "Version:  %s\n", restMethod.getVersion().isEmpty() ? "(empty)" : restMethod.getVersion());
  pw.printf(
      "Version with default:  %s\n",
      restMethod.getVersionWithDefault().isEmpty()
          ? "(empty)"
          : restMethod.getVersionWithDefault());
  pw.printf(
      "Simple collection:  %s\n",
      restMethod.getRestCollectionName().isEmpty()
          ? "(empty)"
          : restMethod.getSimpleRestCollectionName());
  pw.printf(
      "Versioned collection:  %s\n",
      restMethod.getRestCollectionName().isEmpty()
      ? "(empty)" : restMethod.getRestCollectionName());
   pw.printf("Base collection:  %s\n",
      restMethod.getBaseRestCollectionName().isEmpty()
      ? "(empty)" : restMethod.getBaseRestCollectionName());
  pw.printf("Custom Name: %s\n",
      restMethod.getRestKind() == RestKind.CUSTOM
      ? restMethod.getRestMethodName() : "(null)");

  List<Diag> diags = model.getDiagReporter().getDiagCollector().getDiags();
  if (diags.size() > 0) {
    pw.println("Diagnostics:");
    for (Diag d : diags) {
      pw.printf("  %s\n", DiagUtils.getDiagToPrint(d, true));
    }
  }
  pw.println();
}
 

/** Convert the descriptor to its protocol message representation. */
@Override
public ServiceDescriptorProto toProto() {
  return proto;
}
 

TypeSpec.Builder newServiceClassBuilder(ServiceDescriptorProto serviceProto); 

String methodPath(ServiceDescriptorProto serviceProto, MethodDescriptorProto methodProto);