Examples with LastHttpContent com.couchbase.client.core.deps.io.netty.handler.codec.http.LastHttpContent used on opensource projects

Example 1 with LastHttpContent

use of com.couchbase.client.core.deps.io.netty.handler.codec.http.LastHttpContent in project couchbase-jvm-clients by couchbase.

the class QueryMessageHandlerTest method reportsCompletionOnlyOnceStreamingEnds.

/**
 * To avoid accidentally pipelining requests, we need to make sure that the handler only reports completion
 * once the streaming is fully completed, and not just the response completable future initially completed.
 *
 * <p>We send a request, make sure it is encoded correctly and then stream back the chunks, making sure the
 * final completion is only signaled once the last chunk arrived.</p>
 */
@Test
void reportsCompletionOnlyOnceStreamingEnds() {
    BaseEndpoint endpoint = mock(BaseEndpoint.class);
    EmbeddedChannel channel = new EmbeddedChannel(new QueryMessageHandler(endpoint, ENDPOINT_CTX));
    byte[] query = "doesn'tmatter".getBytes(CharsetUtil.UTF_8);
    QueryRequest request = new QueryRequest(ENV.timeoutConfig().queryTimeout(), CORE_CTX, ENV.retryStrategy(), CORE_CTX.authenticator(), "statement", query, false, null, null, null, null, null);
    channel.writeAndFlush(request);
    FullHttpRequest encodedRequest = channel.readOutbound();
    assertEquals("doesn'tmatter", encodedRequest.content().toString(CharsetUtil.UTF_8));
    ReferenceCountUtil.release(encodedRequest);
    verify(endpoint, never()).markRequestCompletion();
    assertFalse(request.response().isDone());
    ByteBuf fullResponse = Unpooled.copiedBuffer(readResource("success_response.json", QueryMessageHandlerTest.class), CharsetUtil.UTF_8);
    // send the header back first
    HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
    channel.writeInbound(response);
    assertFalse(request.response().isDone());
    // send first chunk, should complete the future but not mark the endpoint completion
    HttpContent firstChunk = new DefaultHttpContent(fullResponse.readBytes(500));
    channel.writeInbound(firstChunk);
    assertTrue(request.response().isDone());
    verify(endpoint, never()).markRequestCompletion();
    // send the second chunk, no change
    HttpContent secondChunk = new DefaultHttpContent(fullResponse.readBytes(500));
    channel.writeInbound(secondChunk);
    verify(endpoint, never()).markRequestCompletion();
    // send the last chunk, mark for completion finally
    LastHttpContent lastChunk = new DefaultLastHttpContent(fullResponse.readBytes(fullResponse.readableBytes()));
    channel.writeInbound(lastChunk);
    verify(endpoint, times(1)).markRequestCompletion();
    channel.finishAndReleaseAll();
}

Example 2 with LastHttpContent

use of com.couchbase.client.core.deps.io.netty.handler.codec.http.LastHttpContent in project couchbase-jvm-clients by couchbase.

the class ManagerMessageHandler method channelRead.

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    if (msg instanceof HttpResponse) {
        currentResponse = ((HttpResponse) msg);
        if (isStreamingConfigRequest()) {
            streamingResponse = (BucketConfigStreamingResponse) currentRequest.decode(currentResponse, null);
            currentRequest.succeed(streamingResponse);
            ctx.pipeline().addFirst(new IdleStateHandler(coreContext.environment().ioConfig().configIdleRedialTimeout().toMillis(), 0, 0, TimeUnit.MILLISECONDS));
        }
    } else if (msg instanceof HttpContent) {
        currentContent.writeBytes(((HttpContent) msg).content());
        if (isStreamingConfigRequest()) {
            // there might be more than one config in the full batch, so keep iterating until all are pushed
            while (true) {
                String encodedConfig = currentContent.toString(StandardCharsets.UTF_8);
                int separatorIndex = encodedConfig.indexOf("\n\n\n\n");
                // if -1 is returned it means that no full config has been located yet, need to wait for more chunks
                if (separatorIndex >= 0) {
                    String content = encodedConfig.substring(0, separatorIndex);
                    streamingResponse.pushConfig(content.trim());
                    currentContent.clear();
                    currentContent.writeBytes(encodedConfig.substring(separatorIndex + 4).getBytes(StandardCharsets.UTF_8));
                } else {
                    break;
                }
            }
        }
        if (msg instanceof LastHttpContent) {
            if (isStreamingConfigRequest()) {
                streamingResponse.completeStream();
                streamingResponse = null;
                ctx.pipeline().remove(IdleStateHandler.class);
            } else {
                byte[] copy = new byte[currentContent.readableBytes()];
                currentContent.readBytes(copy);
                Response response = currentRequest.decode(currentResponse, copy);
                currentRequest.succeed(response);
            }
            currentRequest = null;
            if (endpoint != null) {
                endpoint.markRequestCompletion();
            }
        }
    } else {
        ioContext.environment().eventBus().publish(new UnsupportedResponseTypeReceivedEvent(ioContext, msg));
    }
    ReferenceCountUtil.release(msg);
}