Examples with Channel io.grpc.Channel used on opensource projects

Example 11 with Channel

use of io.grpc.Channel in project incubator-skywalking by apache.

the class AbstractStubInterceptor method onConstruct.

@Override
public void onConstruct(EnhancedInstance objInst, Object[] allArguments) {
    Channel channel = (Channel) allArguments[0];
    objInst.setSkyWalkingDynamicField(ClientInterceptors.intercept(channel, new GRPCClientInterceptor()));
}

Example 12 with Channel

use of io.grpc.Channel in project sharding-jdbc by shardingjdbc.

the class EtcdChannelFactory method getInstance.

/**
 * Get etcd channel instance.
 *
 * @param endpoints etcd endpoints
 * @return etcd channel
 */
public static Channel getInstance(final List<String> endpoints) {
    if (etcdChannels.containsKey(endpoints)) {
        return etcdChannels.get(endpoints);
    }
    Channel channel = NettyChannelBuilder.forTarget(TARGET).usePlaintext(true).nameResolverFactory(new EtcdNameSolverFactory(TARGET, endpoints)).loadBalancerFactory(RoundRobinLoadBalancerFactory.getInstance()).build();
    Channel result = etcdChannels.putIfAbsent(endpoints, channel);
    return null == result ? channel : result;
}

Example 13 with Channel

use of io.grpc.Channel in project pinpoint by naver.

the class ManagedChannelUtilsTest method testGetLogId.

@Test
public void testGetLogId() {
    Channel channel = mock(Channel.class);
    when(channel.toString()).thenReturn("ManagedChannelOrphanWrapper{delegate=ManagedChannelImpl{logId=1, target=127.0.0.1:9993}}");
    Assert.assertEquals(1, ManagedChannelUtils.getLogId(channel));
}

Example 14 with Channel

use of io.grpc.Channel in project grpc-java by grpc.

the class HandshakerServiceChannelTest method resource_lifecycleTwice.

@Test
public void resource_lifecycleTwice() {
    Channel channel = resource.create();
    try {
        doRpc(channel);
    } finally {
        resource.close(channel);
    }
    channel = resource.create();
    try {
        doRpc(channel);
    } finally {
        resource.close(channel);
    }
}

Example 15 with Channel

use of io.grpc.Channel in project grpc-java by grpc.

the class XdsTestClient method runQps.

private void runQps() throws InterruptedException, ExecutionException {
    final SettableFuture<Void> failure = SettableFuture.create();
    final class PeriodicRpc implements Runnable {

        @Override
        public void run() {
            List<RpcConfig> configs = rpcConfigs;
            for (RpcConfig cfg : configs) {
                makeRpc(cfg);
            }
        }

        private void makeRpc(final RpcConfig config) {
            final long requestId;
            final Set<XdsStatsWatcher> savedWatchers = new HashSet<>();
            synchronized (lock) {
                currentRequestId += 1;
                requestId = currentRequestId;
                savedWatchers.addAll(watchers);
            }
            ManagedChannel channel = channels.get((int) (requestId % channels.size()));
            TestServiceGrpc.TestServiceStub stub = TestServiceGrpc.newStub(channel);
            final AtomicReference<ClientCall<?, ?>> clientCallRef = new AtomicReference<>();
            final AtomicReference<String> hostnameRef = new AtomicReference<>();
            stub = stub.withDeadlineAfter(config.timeoutSec, TimeUnit.SECONDS).withInterceptors(new ClientInterceptor() {

                @Override
                public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method, CallOptions callOptions, Channel next) {
                    ClientCall<ReqT, RespT> call = next.newCall(method, callOptions);
                    clientCallRef.set(call);
                    return new SimpleForwardingClientCall<ReqT, RespT>(call) {

                        @Override
                        public void start(Listener<RespT> responseListener, Metadata headers) {
                            headers.merge(config.metadata);
                            super.start(new SimpleForwardingClientCallListener<RespT>(responseListener) {

                                @Override
                                public void onHeaders(Metadata headers) {
                                    hostnameRef.set(headers.get(XdsTestServer.HOSTNAME_KEY));
                                    super.onHeaders(headers);
                                }
                            }, headers);
                        }
                    };
                }
            });
            if (config.rpcType == RpcType.EMPTY_CALL) {
                stub.emptyCall(EmptyProtos.Empty.getDefaultInstance(), new StreamObserver<EmptyProtos.Empty>() {

                    @Override
                    public void onCompleted() {
                        handleRpcCompleted(requestId, config.rpcType, hostnameRef.get(), savedWatchers);
                    }

                    @Override
                    public void onError(Throwable t) {
                        handleRpcError(requestId, config.rpcType, Status.fromThrowable(t), savedWatchers);
                    }

                    @Override
                    public void onNext(EmptyProtos.Empty response) {
                    }
                });
            } else if (config.rpcType == RpcType.UNARY_CALL) {
                SimpleRequest request = SimpleRequest.newBuilder().setFillServerId(true).build();
                stub.unaryCall(request, new StreamObserver<SimpleResponse>() {

                    @Override
                    public void onCompleted() {
                        handleRpcCompleted(requestId, config.rpcType, hostnameRef.get(), savedWatchers);
                    }

                    @Override
                    public void onError(Throwable t) {
                        if (printResponse) {
                            logger.log(Level.WARNING, "Rpc failed", t);
                        }
                        handleRpcError(requestId, config.rpcType, Status.fromThrowable(t), savedWatchers);
                    }

                    @Override
                    public void onNext(SimpleResponse response) {
                        // service and rely on parsing stdout.
                        if (printResponse) {
                            System.out.println("Greeting: Hello world, this is " + response.getHostname() + ", from " + clientCallRef.get().getAttributes().get(Grpc.TRANSPORT_ATTR_REMOTE_ADDR));
                        }
                        // TODO(ericgribkoff) Delete when server is deployed that sets metadata value.
                        if (hostnameRef.get() == null) {
                            hostnameRef.set(response.getHostname());
                        }
                    }
                });
            } else {
                throw new AssertionError("Unknown RPC type: " + config.rpcType);
            }
            statsAccumulator.recordRpcStarted(config.rpcType);
        }

        private void handleRpcCompleted(long requestId, RpcType rpcType, String hostname, Set<XdsStatsWatcher> watchers) {
            statsAccumulator.recordRpcFinished(rpcType, Status.OK);
            notifyWatchers(watchers, rpcType, requestId, hostname);
        }

        private void handleRpcError(long requestId, RpcType rpcType, Status status, Set<XdsStatsWatcher> watchers) {
            statsAccumulator.recordRpcFinished(rpcType, status);
            notifyWatchers(watchers, rpcType, requestId, null);
        }
    }
    long nanosPerQuery = TimeUnit.SECONDS.toNanos(1) / qps;
    ListenableScheduledFuture<?> future = exec.scheduleAtFixedRate(new PeriodicRpc(), 0, nanosPerQuery, TimeUnit.NANOSECONDS);
    Futures.addCallback(future, new FutureCallback<Object>() {

        @Override
        public void onFailure(Throwable t) {
            failure.setException(t);
        }

        @Override
        public void onSuccess(Object o) {
        }
    }, MoreExecutors.directExecutor());
    failure.get();
}