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ThriftHttpClientFilter.java
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ThriftHttpClientFilter.java
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/*
* Copyright (c) 2014, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.grizzly.thrift.http;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.filterchain.FilterChainContext;
import org.glassfish.grizzly.filterchain.NextAction;
import org.glassfish.grizzly.http.HttpBaseFilter;
import org.glassfish.grizzly.http.HttpContent;
import org.glassfish.grizzly.http.HttpRequestPacket;
import org.glassfish.grizzly.http.Method;
import org.glassfish.grizzly.http.Protocol;
import org.glassfish.grizzly.http.util.Header;
/**
* ThriftHttpClientFilter is a client-side filter for Thrift RPC processors over
* HTTP.
* <p>
* Usages:
*
* <pre>
* {@code
* final FilterChainBuilder clientFilterChainBuilder = FilterChainBuilder.stateless();
* clientFilterChainBuilder.add(new TransportFilter()).add(new HttpClientFilter()).add(new ThriftHttpClientFilter("/yourUriPath")).add(new ThriftClientFilter());
* <p>
* final TCPNIOTransport transport = TCPNIOTransportBuilder.newInstance().build();
* transport.setProcessor(clientFilterChainBuilder.build());
* transport.start();
* Future<Connection> future = transport.connect(ip, port);
* final Connection connection = future.get(10, TimeUnit.SECONDS);
* <p>
* final TTransport ttransport = TGrizzlyClientTransport.create(connection);
* final TProtocol tprotocol = new TBinaryProtocol(ttransport);
* user-generated.thrift.Client client = new user-generated.thrift.Client(tprotocol);
* client.ping();
* // execute more works
* // ...
* // release
* ttransport.close();
* connection.close();
* transport.shutdownNow();
* }
* </pre>
*
* @author Bongjae Chang
*/
public class ThriftHttpClientFilter extends HttpBaseFilter {
private static final String THRIFT_HTTP_CONTENT_TYPE = "application/x-thrift";
private final String uriPath;
private final Map<String, String> headers = new HashMap<>();
public ThriftHttpClientFilter(final String uriPath, Map<String, String> headers) {
this.uriPath = uriPath;
this.headers.put(Header.Connection.toString(), "keep-alive");
this.headers.put(Header.Accept.toString(), "*/*");
this.headers.put(Header.UserAgent.toString(), "grizzly-thrift");
if (headers != null && !headers.isEmpty()) {
this.headers.putAll(headers);
}
}
public ThriftHttpClientFilter(final String uriPath) {
this(uriPath, null);
}
@Override
public NextAction handleRead(FilterChainContext ctx) throws IOException {
final HttpContent httpContent = ctx.getMessage();
if (httpContent == null) {
throw new IOException("httpContent should not be null");
}
final Buffer responseBodyBuffer = httpContent.getContent();
ctx.setMessage(responseBodyBuffer);
return ctx.getInvokeAction();
}
@Override
public NextAction handleWrite(FilterChainContext ctx) throws IOException {
final Buffer requestBodyBuffer = ctx.getMessage();
if (requestBodyBuffer == null) {
throw new IOException("request body's buffer should not be null");
}
final HttpRequestPacket.Builder builder = HttpRequestPacket.builder();
builder.method(Method.POST);
builder.protocol(Protocol.HTTP_1_1);
builder.uri(uriPath);
final InetSocketAddress peerAddress = (InetSocketAddress) ctx.getConnection().getPeerAddress();
final String httpHost = peerAddress.getHostName() + ':' + peerAddress.getPort();
builder.host(httpHost);
final long contentLength = requestBodyBuffer.remaining();
if (contentLength >= 0) {
builder.contentLength(contentLength);
} else {
builder.chunked(true);
}
builder.contentType(THRIFT_HTTP_CONTENT_TYPE);
for (Entry<String, String> entry : headers.entrySet()) {
builder.header(entry.getKey(), entry.getValue());
}
final HttpRequestPacket requestPacket = builder.build();
final HttpContent content = requestPacket.httpContentBuilder().content(requestBodyBuffer).build();
content.setLast(true);
ctx.setMessage(content);
return ctx.getInvokeAction();
}
}