With Client REQUEST
I have a REST web service that runs on Jetty. I want to write a Java client that chunks along a huge batch of documents to that rest service using the same web connection.
I was able to establish an Iterator based streaming approach here:
Sending a stream of documents to a Jersey @POST endpoint
This does not work unless you set clientConfig.property(ClientProperties.REQUEST_ENTITY_PROCESSING, RequestEntityProcessing.CHUNKED);
because the Content-length
is unknown.
While somewhat working, the chunked transfer seems to lose a few documents. For example:
num_docs 500000
numFound 499249
Maybe it's sending chunks like:
{some:doc}, {some:doc}, {some:doc}, {some:doc}, {some:doc}, {some:doc}, {some:do
So I'm losing some each time at the ends? UPDATE: I was wrong about this.
How do I make it not do that? Any ideas what else might be happening?
ClientConfig clientConfig = new ClientConfig();
clientConfig.property(ClientProperties.CONNECT_TIMEOUT, (int)TimeUnit.SECONDS.toMillis(60));
clientConfig.property(ClientProperties.REQUEST_ENTITY_PROCESSING, RequestEntityProcessing.CHUNKED);
clientConfig.property(ClientProperties.ASYNC_THREADPOOL_SIZE, 100);
clientConfig.property(ApacheClientProperties.CONNECTION_MANAGER, HttpClientFactory.createConnectionManager(name,
metricRegistry, configuration));
ApacheConnectorProvider connector = new ApacheConnectorProvider();
clientConfig.connectorProvider(connector);
clientConfig.register(new ClientRequestFilter() {
@Override
public void filter(ClientRequestContext requestContext) throws IOException {
List<Object> orig = requestContext.getHeaders().remove(HttpHeaders.CONTENT_LENGTH);
if (orig != null && !orig.isEmpty()) {
requestContext.getHeaders().addAll("Length", orig);
}
}
});
clientConfig.register(new ClientRequestFilter() {
@Override
public void filter(ClientRequestContext requestContext) throws IOException {
if (requestContext.getMediaType() != null &&
requestContext.getMediaType().getType() != null &&
requestContext.getMediaType().getType().equalsIgnoreCase("multipart")) {
final MediaType boundaryMediaType = Boundary.addBoundary(requestContext.getMediaType());
if (boundaryMediaType != requestContext.getMediaType()) {
requestContext.getHeaders().putSingle(HttpHeaders.CONTENT_TYPE, boundaryMediaType.toString());
}
if (!requestContext.getHeaders().containsKey("MIME-Version")) {
requestContext.getHeaders().putSingle("MIME-Version", "1.0");
}
}
}
});
关闭这个 - 我不小心关闭了流,所以它真的在最后丢失了文档,这让我暗示在关闭执行程序之前等待阻塞队列为空。
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