mirror of https://github.com/grpc/grpc-dart.git
Add a simple end-to-end gRPC-web test (#354)
We did not have any before which allowed for regressions like #306 to slip through. Unfortunately we can't test gRPC-web implementation in pure Dart because we don't have a server side implementation of the protocol. Instead we add a dependency on the third party gRPC-web proxy (grpcwebproxy by Improbable Engineering - the choice made purely based on the simplicity of installation) which forwards all request gRPC server (written in Dart).
This commit is contained in:
Vyacheslav Egorov
GitHub
parent
e2f3d74087
commit
2957ec003f
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@ -8,6 +8,8 @@ addons:
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# The Chrome addon does not work on windows
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before_install:
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- if [ $TRAVIS_OS_NAME = windows ]; then choco install googlechrome ; fi
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- ./tool/install-grpcwebproxy.sh
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- export PATH="$PATH:/tmp/grpcwebproxy"
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# Run against both the dev and stable channel.
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dart:
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@ -37,6 +37,10 @@ pub get
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pub run test
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```
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gRPC-web tests require [`grpcwebproxy`](
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https://github.com/improbable-eng/grpc-web/tree/master/go/grpcwebproxy) by
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Improbable Engineering to be available in the PATH. Pre-built binaries are [available](https://github.com/improbable-eng/grpc-web/releases).
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## Guidelines for Pull Requests
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How to get your contributions merged smoothly and quickly.
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@ -23,3 +23,4 @@ dev_dependencies:
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build_web_compilers: ^2.1.1
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mockito: ^4.1.0
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test: ^1.6.4
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stream_channel: ^2.0.0
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@ -0,0 +1,92 @@
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import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:grpc/grpc.dart';
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import 'package:stream_channel/stream_channel.dart';
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import 'src/generated/echo.pbgrpc.dart';
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/// Controls verbosity of output during the test. Flip to [true] for easier
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/// debugging.
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const verbose = false;
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class EchoService extends EchoServiceBase {
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@override
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Future<EchoResponse> echo(ServiceCall call, EchoRequest request) async {
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return EchoResponse()..message = request.message;
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}
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@override
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Stream<ServerStreamingEchoResponse> serverStreamingEcho(
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ServiceCall call, ServerStreamingEchoRequest request) async* {
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for (var i = 0; i < request.messageCount; i++) {
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yield ServerStreamingEchoResponse()..message = request.message;
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if (i < request.messageCount - 1) {
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await Future.delayed(Duration(milliseconds: request.messageInterval));
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}
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}
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}
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}
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hybridMain(StreamChannel channel) async {
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// Spawn a gRPC server.
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final server = Server([EchoService()]);
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await server.serve(port: 0);
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_info('grpc server listening on ${server.port}');
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// Spawn a proxy that would translate gRPC-web protocol into gRPC protocol
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// for us. We use grpcwebproxy by Improbable Engineering. See CONTRIBUTING.md
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// for setup.
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Process proxy;
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try {
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proxy =
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await Process.start('grpcwebproxy${Platform.isWindows ? '.exe' : ''}', [
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'--backend_addr',
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'localhost:${server.port}',
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'--run_tls_server=false',
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'--server_http_debug_port',
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'0',
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'--allow_all_origins',
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]);
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} catch (e) {
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print('''
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Failed to start grpcwebproxy: $e.
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Make sure that grpcwebproxy is available in the PATH see CONTRIBUTING.md
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if you are running tests locally.
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''');
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channel.sink.add(0);
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return;
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}
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// Parse output of the proxy process looking for a port it selected.
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final portRe = RegExp(r'listening for http on: .*:(\d+)');
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proxy.stderr
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.transform(utf8.decoder)
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.transform(const LineSplitter())
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.listen((line) {
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_info('grpcwebproxy|stderr] $line');
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});
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proxy.stdout
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.transform(utf8.decoder)
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.transform(const LineSplitter())
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.listen((line) {
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_info('grpcwebproxy|stdout] $line');
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final m = portRe.firstMatch(line);
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if (m != null) {
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final port = int.parse(m[1]);
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channel.sink.add(port);
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}
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});
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proxy.exitCode.then((value) => _info('proxy quit with ${value}'));
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}
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void _info(String line) {
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if (verbose) {
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print(line);
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}
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}
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@ -0,0 +1,64 @@
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@TestOn('browser')
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import 'dart:math' as math;
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import 'package:test/test.dart';
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import 'package:grpc/grpc_web.dart';
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import 'src/generated/echo.pbgrpc.dart';
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/// Starts gRPC server and a gRPC-web proxy (see grpc_web_server.dart for
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/// implementation.
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///
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/// Returns uri which can be used to talk to using gRPC-web channel.
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///
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/// Note: server will be shut down when the test which spawned it finishes
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/// running.
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Future<Uri> startServer() async {
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// Spawn the server code on the server side, it will send us back port
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// number we should be talking to.
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final serverChannel = spawnHybridUri('grpc_web_server.dart');
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final port = await serverChannel.stream.first;
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// Note: we would like to test https as well, but we can't easily do it
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// because browsers like chrome don't trust self-signed certificates by
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// default.
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return Uri.parse('http://localhost:$port');
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}
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void main() {
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// Test verifies that gRPC-web echo example works by talking to a gRPC
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// server (written in Dart) via gRPC-web protocol through a third party
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// gRPC-web proxy.
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test('gRPC-web echo test', () async {
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final serverUri = await startServer();
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final channel = GrpcWebClientChannel.xhr(serverUri);
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final service = EchoServiceClient(channel);
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const testMessage = 'hello from gRPC-web';
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// First test a simple echo request.
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final response = await service.echo(EchoRequest()..message = testMessage);
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expect(response.message, equals(testMessage));
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// Now test that streaming requests also works by asking echo server
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// to send us a number of messages every 100 ms. Check that we receive
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// them fast enough (if streaming is broken we will receive all of them
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// in one go).
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final sw = Stopwatch()..start();
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final timings = await service
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.serverStreamingEcho(ServerStreamingEchoRequest()
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..message = testMessage
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..messageCount = 20
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..messageInterval = 100)
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.map((response) {
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expect(response.message, equals(testMessage));
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final timing = sw.elapsedMilliseconds;
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sw.reset();
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return timing;
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}).toList();
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final maxDelay = timings.reduce(math.max);
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expect(maxDelay, lessThan(500));
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});
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}
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@ -0,0 +1,155 @@
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///
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// Generated code. Do not modify.
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// source: echo.proto
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//
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// @dart = 2.3
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// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type
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import 'dart:core' as $core;
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import 'package:protobuf/protobuf.dart' as $pb;
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class EchoRequest extends $pb.GeneratedMessage {
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static final $pb.BuilderInfo _i = $pb.BuilderInfo('EchoRequest', package: const $pb.PackageName('grpc.gateway.testing'), createEmptyInstance: create)
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..aOS(1, 'message')
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..hasRequiredFields = false
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;
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EchoRequest._() : super();
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factory EchoRequest() => create();
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factory EchoRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
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factory EchoRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
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EchoRequest clone() => EchoRequest()..mergeFromMessage(this);
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EchoRequest copyWith(void Function(EchoRequest) updates) => super.copyWith((message) => updates(message as EchoRequest));
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$pb.BuilderInfo get info_ => _i;
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@$core.pragma('dart2js:noInline')
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static EchoRequest create() => EchoRequest._();
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EchoRequest createEmptyInstance() => create();
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static $pb.PbList<EchoRequest> createRepeated() => $pb.PbList<EchoRequest>();
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@$core.pragma('dart2js:noInline')
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static EchoRequest getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<EchoRequest>(create);
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static EchoRequest _defaultInstance;
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@$pb.TagNumber(1)
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$core.String get message => $_getSZ(0);
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@$pb.TagNumber(1)
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set message($core.String v) { $_setString(0, v); }
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@$pb.TagNumber(1)
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$core.bool hasMessage() => $_has(0);
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@$pb.TagNumber(1)
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void clearMessage() => clearField(1);
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}
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class EchoResponse extends $pb.GeneratedMessage {
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static final $pb.BuilderInfo _i = $pb.BuilderInfo('EchoResponse', package: const $pb.PackageName('grpc.gateway.testing'), createEmptyInstance: create)
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..aOS(1, 'message')
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..hasRequiredFields = false
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;
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EchoResponse._() : super();
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factory EchoResponse() => create();
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factory EchoResponse.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
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factory EchoResponse.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
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EchoResponse clone() => EchoResponse()..mergeFromMessage(this);
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EchoResponse copyWith(void Function(EchoResponse) updates) => super.copyWith((message) => updates(message as EchoResponse));
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$pb.BuilderInfo get info_ => _i;
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@$core.pragma('dart2js:noInline')
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static EchoResponse create() => EchoResponse._();
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EchoResponse createEmptyInstance() => create();
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static $pb.PbList<EchoResponse> createRepeated() => $pb.PbList<EchoResponse>();
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@$core.pragma('dart2js:noInline')
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static EchoResponse getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<EchoResponse>(create);
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static EchoResponse _defaultInstance;
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@$pb.TagNumber(1)
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$core.String get message => $_getSZ(0);
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@$pb.TagNumber(1)
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set message($core.String v) { $_setString(0, v); }
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@$pb.TagNumber(1)
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$core.bool hasMessage() => $_has(0);
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@$pb.TagNumber(1)
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void clearMessage() => clearField(1);
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}
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class ServerStreamingEchoRequest extends $pb.GeneratedMessage {
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static final $pb.BuilderInfo _i = $pb.BuilderInfo('ServerStreamingEchoRequest', package: const $pb.PackageName('grpc.gateway.testing'), createEmptyInstance: create)
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..aOS(1, 'message')
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..a<$core.int>(2, 'messageCount', $pb.PbFieldType.O3)
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..a<$core.int>(3, 'messageInterval', $pb.PbFieldType.O3)
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..hasRequiredFields = false
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;
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ServerStreamingEchoRequest._() : super();
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factory ServerStreamingEchoRequest() => create();
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factory ServerStreamingEchoRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
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factory ServerStreamingEchoRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
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ServerStreamingEchoRequest clone() => ServerStreamingEchoRequest()..mergeFromMessage(this);
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ServerStreamingEchoRequest copyWith(void Function(ServerStreamingEchoRequest) updates) => super.copyWith((message) => updates(message as ServerStreamingEchoRequest));
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$pb.BuilderInfo get info_ => _i;
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@$core.pragma('dart2js:noInline')
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static ServerStreamingEchoRequest create() => ServerStreamingEchoRequest._();
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ServerStreamingEchoRequest createEmptyInstance() => create();
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static $pb.PbList<ServerStreamingEchoRequest> createRepeated() => $pb.PbList<ServerStreamingEchoRequest>();
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@$core.pragma('dart2js:noInline')
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static ServerStreamingEchoRequest getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<ServerStreamingEchoRequest>(create);
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static ServerStreamingEchoRequest _defaultInstance;
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@$pb.TagNumber(1)
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$core.String get message => $_getSZ(0);
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@$pb.TagNumber(1)
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set message($core.String v) { $_setString(0, v); }
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@$pb.TagNumber(1)
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$core.bool hasMessage() => $_has(0);
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@$pb.TagNumber(1)
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void clearMessage() => clearField(1);
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@$pb.TagNumber(2)
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$core.int get messageCount => $_getIZ(1);
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@$pb.TagNumber(2)
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set messageCount($core.int v) { $_setSignedInt32(1, v); }
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@$pb.TagNumber(2)
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$core.bool hasMessageCount() => $_has(1);
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@$pb.TagNumber(2)
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void clearMessageCount() => clearField(2);
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@$pb.TagNumber(3)
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$core.int get messageInterval => $_getIZ(2);
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@$pb.TagNumber(3)
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set messageInterval($core.int v) { $_setSignedInt32(2, v); }
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@$pb.TagNumber(3)
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$core.bool hasMessageInterval() => $_has(2);
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@$pb.TagNumber(3)
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void clearMessageInterval() => clearField(3);
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}
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class ServerStreamingEchoResponse extends $pb.GeneratedMessage {
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static final $pb.BuilderInfo _i = $pb.BuilderInfo('ServerStreamingEchoResponse', package: const $pb.PackageName('grpc.gateway.testing'), createEmptyInstance: create)
|
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..aOS(1, 'message')
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..hasRequiredFields = false
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;
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ServerStreamingEchoResponse._() : super();
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factory ServerStreamingEchoResponse() => create();
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factory ServerStreamingEchoResponse.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
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factory ServerStreamingEchoResponse.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
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ServerStreamingEchoResponse clone() => ServerStreamingEchoResponse()..mergeFromMessage(this);
|
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ServerStreamingEchoResponse copyWith(void Function(ServerStreamingEchoResponse) updates) => super.copyWith((message) => updates(message as ServerStreamingEchoResponse));
|
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$pb.BuilderInfo get info_ => _i;
|
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@$core.pragma('dart2js:noInline')
|
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static ServerStreamingEchoResponse create() => ServerStreamingEchoResponse._();
|
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ServerStreamingEchoResponse createEmptyInstance() => create();
|
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static $pb.PbList<ServerStreamingEchoResponse> createRepeated() => $pb.PbList<ServerStreamingEchoResponse>();
|
||||
@$core.pragma('dart2js:noInline')
|
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static ServerStreamingEchoResponse getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<ServerStreamingEchoResponse>(create);
|
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static ServerStreamingEchoResponse _defaultInstance;
|
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|
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@$pb.TagNumber(1)
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$core.String get message => $_getSZ(0);
|
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@$pb.TagNumber(1)
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||||
set message($core.String v) { $_setString(0, v); }
|
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@$pb.TagNumber(1)
|
||||
$core.bool hasMessage() => $_has(0);
|
||||
@$pb.TagNumber(1)
|
||||
void clearMessage() => clearField(1);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,7 @@
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///
|
||||
// Generated code. Do not modify.
|
||||
// source: echo.proto
|
||||
//
|
||||
// @dart = 2.3
|
||||
// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type
|
||||
|
||||
|
|
@ -0,0 +1,85 @@
|
|||
///
|
||||
// Generated code. Do not modify.
|
||||
// source: echo.proto
|
||||
//
|
||||
// @dart = 2.3
|
||||
// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type
|
||||
|
||||
import 'dart:async' as $async;
|
||||
|
||||
import 'dart:core' as $core;
|
||||
|
||||
import 'package:grpc/service_api.dart' as $grpc;
|
||||
import 'echo.pb.dart' as $0;
|
||||
export 'echo.pb.dart';
|
||||
|
||||
class EchoServiceClient extends $grpc.Client {
|
||||
static final _$echo = $grpc.ClientMethod<$0.EchoRequest, $0.EchoResponse>(
|
||||
'/grpc.gateway.testing.EchoService/Echo',
|
||||
($0.EchoRequest value) => value.writeToBuffer(),
|
||||
($core.List<$core.int> value) => $0.EchoResponse.fromBuffer(value));
|
||||
static final _$serverStreamingEcho = $grpc.ClientMethod<
|
||||
$0.ServerStreamingEchoRequest, $0.ServerStreamingEchoResponse>(
|
||||
'/grpc.gateway.testing.EchoService/ServerStreamingEcho',
|
||||
($0.ServerStreamingEchoRequest value) => value.writeToBuffer(),
|
||||
($core.List<$core.int> value) =>
|
||||
$0.ServerStreamingEchoResponse.fromBuffer(value));
|
||||
|
||||
EchoServiceClient($grpc.ClientChannel channel, {$grpc.CallOptions options})
|
||||
: super(channel, options: options);
|
||||
|
||||
$grpc.ResponseFuture<$0.EchoResponse> echo($0.EchoRequest request,
|
||||
{$grpc.CallOptions options}) {
|
||||
final call = $createCall(_$echo, $async.Stream.fromIterable([request]),
|
||||
options: options);
|
||||
return $grpc.ResponseFuture(call);
|
||||
}
|
||||
|
||||
$grpc.ResponseStream<$0.ServerStreamingEchoResponse> serverStreamingEcho(
|
||||
$0.ServerStreamingEchoRequest request,
|
||||
{$grpc.CallOptions options}) {
|
||||
final call = $createCall(
|
||||
_$serverStreamingEcho, $async.Stream.fromIterable([request]),
|
||||
options: options);
|
||||
return $grpc.ResponseStream(call);
|
||||
}
|
||||
}
|
||||
|
||||
abstract class EchoServiceBase extends $grpc.Service {
|
||||
$core.String get $name => 'grpc.gateway.testing.EchoService';
|
||||
|
||||
EchoServiceBase() {
|
||||
$addMethod($grpc.ServiceMethod<$0.EchoRequest, $0.EchoResponse>(
|
||||
'Echo',
|
||||
echo_Pre,
|
||||
false,
|
||||
false,
|
||||
($core.List<$core.int> value) => $0.EchoRequest.fromBuffer(value),
|
||||
($0.EchoResponse value) => value.writeToBuffer()));
|
||||
$addMethod($grpc.ServiceMethod<$0.ServerStreamingEchoRequest,
|
||||
$0.ServerStreamingEchoResponse>(
|
||||
'ServerStreamingEcho',
|
||||
serverStreamingEcho_Pre,
|
||||
false,
|
||||
true,
|
||||
($core.List<$core.int> value) =>
|
||||
$0.ServerStreamingEchoRequest.fromBuffer(value),
|
||||
($0.ServerStreamingEchoResponse value) => value.writeToBuffer()));
|
||||
}
|
||||
|
||||
$async.Future<$0.EchoResponse> echo_Pre(
|
||||
$grpc.ServiceCall call, $async.Future<$0.EchoRequest> request) async {
|
||||
return echo(call, await request);
|
||||
}
|
||||
|
||||
$async.Stream<$0.ServerStreamingEchoResponse> serverStreamingEcho_Pre(
|
||||
$grpc.ServiceCall call,
|
||||
$async.Future<$0.ServerStreamingEchoRequest> request) async* {
|
||||
yield* serverStreamingEcho(call, await request);
|
||||
}
|
||||
|
||||
$async.Future<$0.EchoResponse> echo(
|
||||
$grpc.ServiceCall call, $0.EchoRequest request);
|
||||
$async.Stream<$0.ServerStreamingEchoResponse> serverStreamingEcho(
|
||||
$grpc.ServiceCall call, $0.ServerStreamingEchoRequest request);
|
||||
}
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
///
|
||||
// Generated code. Do not modify.
|
||||
// source: echo.proto
|
||||
//
|
||||
// @dart = 2.3
|
||||
// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type
|
||||
|
||||
const EchoRequest$json = const {
|
||||
'1': 'EchoRequest',
|
||||
'2': const [
|
||||
const {'1': 'message', '3': 1, '4': 1, '5': 9, '10': 'message'},
|
||||
],
|
||||
};
|
||||
|
||||
const EchoResponse$json = const {
|
||||
'1': 'EchoResponse',
|
||||
'2': const [
|
||||
const {'1': 'message', '3': 1, '4': 1, '5': 9, '10': 'message'},
|
||||
],
|
||||
};
|
||||
|
||||
const ServerStreamingEchoRequest$json = const {
|
||||
'1': 'ServerStreamingEchoRequest',
|
||||
'2': const [
|
||||
const {'1': 'message', '3': 1, '4': 1, '5': 9, '10': 'message'},
|
||||
const {'1': 'message_count', '3': 2, '4': 1, '5': 5, '10': 'messageCount'},
|
||||
const {'1': 'message_interval', '3': 3, '4': 1, '5': 5, '10': 'messageInterval'},
|
||||
],
|
||||
};
|
||||
|
||||
const ServerStreamingEchoResponse$json = const {
|
||||
'1': 'ServerStreamingEchoResponse',
|
||||
'2': const [
|
||||
const {'1': 'message', '3': 1, '4': 1, '5': 9, '10': 'message'},
|
||||
],
|
||||
};
|
||||
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
// Copyright 2018 Google LLC
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// https://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
syntax = "proto3";
|
||||
|
||||
package grpc.gateway.testing;
|
||||
|
||||
message EchoRequest {
|
||||
string message = 1;
|
||||
}
|
||||
|
||||
message EchoResponse {
|
||||
string message = 1;
|
||||
}
|
||||
|
||||
message ServerStreamingEchoRequest {
|
||||
string message = 1;
|
||||
int32 message_count = 2;
|
||||
int32 message_interval = 3;
|
||||
}
|
||||
|
||||
message ServerStreamingEchoResponse {
|
||||
string message = 1;
|
||||
}
|
||||
|
||||
service EchoService {
|
||||
rpc Echo(EchoRequest) returns (EchoResponse);
|
||||
rpc ServerStreamingEcho(ServerStreamingEchoRequest)
|
||||
returns (stream ServerStreamingEchoResponse);
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
#!/bin/sh
|
||||
|
||||
VERSION=v0.13.0
|
||||
SUFFIX=
|
||||
|
||||
case $TRAVIS_OS_NAME in
|
||||
linux)
|
||||
VARIANT=linux-x86_64
|
||||
;;
|
||||
osx)
|
||||
VARIANT=osx-x86_64
|
||||
;;
|
||||
windows)
|
||||
VARIANT=win64.exe
|
||||
SUFFIX=.exe
|
||||
;;
|
||||
esac
|
||||
|
||||
BINARY=grpcwebproxy-${VERSION}-${VARIANT}
|
||||
|
||||
wget https://github.com/improbable-eng/grpc-web/releases/download/${VERSION}/${BINARY}.zip -O /tmp/grpcwebproxy.zip
|
||||
rm -rf /tmp/grpcwebproxy
|
||||
mkdir /tmp/grpcwebproxy
|
||||
cd /tmp/grpcwebproxy
|
||||
unzip /tmp/grpcwebproxy.zip
|
||||
mv dist/${BINARY} ./grpcwebproxy${SUFFIX}
|
||||
|
||||
Loading…
Reference in New Issue