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370 lines
12 KiB
Java
370 lines
12 KiB
Java
/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package ch.boye.httpclientandroidlib.impl.conn;
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import java.io.IOException;
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import java.io.InterruptedIOException;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.util.concurrent.TimeUnit;
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import javax.net.ssl.SSLSession;
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import javax.net.ssl.SSLSocket;
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import ch.boye.httpclientandroidlib.HttpConnectionMetrics;
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import ch.boye.httpclientandroidlib.HttpEntityEnclosingRequest;
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import ch.boye.httpclientandroidlib.HttpException;
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import ch.boye.httpclientandroidlib.HttpRequest;
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import ch.boye.httpclientandroidlib.HttpResponse;
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import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
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import ch.boye.httpclientandroidlib.conn.ClientConnectionManager;
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import ch.boye.httpclientandroidlib.conn.ManagedClientConnection;
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import ch.boye.httpclientandroidlib.conn.OperatedClientConnection;
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import ch.boye.httpclientandroidlib.protocol.HttpContext;
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/**
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* Abstract adapter from {@link OperatedClientConnection operated} to
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* {@link ManagedClientConnection managed} client connections.
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* Read and write methods are delegated to the wrapped connection.
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* Operations affecting the connection state have to be implemented
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* by derived classes. Operations for querying the connection state
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* are delegated to the wrapped connection if there is one, or
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* return a default value if there is none.
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* <p>
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* This adapter tracks the checkpoints for reusable communication states,
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* as indicated by {@link #markReusable markReusable} and queried by
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* {@link #isMarkedReusable isMarkedReusable}.
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* All send and receive operations will automatically clear the mark.
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* <p>
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* Connection release calls are delegated to the connection manager,
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* if there is one. {@link #abortConnection abortConnection} will
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* clear the reusability mark first. The connection manager is
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* expected to tolerate multiple calls to the release method.
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*
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* @since 4.0
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*
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* @deprecated (4.2) do not use
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*/
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@Deprecated
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@NotThreadSafe
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public abstract class AbstractClientConnAdapter implements ManagedClientConnection, HttpContext {
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/**
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* The connection manager.
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*/
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private final ClientConnectionManager connManager;
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/** The wrapped connection. */
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private volatile OperatedClientConnection wrappedConnection;
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/** The reusability marker. */
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private volatile boolean markedReusable;
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/** True if the connection has been shut down or released. */
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private volatile boolean released;
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/** The duration this is valid for while idle (in ms). */
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private volatile long duration;
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/**
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* Creates a new connection adapter.
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* The adapter is initially <i>not</i>
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* {@link #isMarkedReusable marked} as reusable.
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*
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* @param mgr the connection manager, or <code>null</code>
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* @param conn the connection to wrap, or <code>null</code>
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*/
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protected AbstractClientConnAdapter(final ClientConnectionManager mgr,
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final OperatedClientConnection conn) {
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super();
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connManager = mgr;
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wrappedConnection = conn;
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markedReusable = false;
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released = false;
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duration = Long.MAX_VALUE;
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}
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/**
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* Detaches this adapter from the wrapped connection.
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* This adapter becomes useless.
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*/
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protected synchronized void detach() {
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wrappedConnection = null;
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duration = Long.MAX_VALUE;
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}
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protected OperatedClientConnection getWrappedConnection() {
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return wrappedConnection;
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}
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protected ClientConnectionManager getManager() {
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return connManager;
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}
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/**
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* @deprecated (4.1) use {@link #assertValid(OperatedClientConnection)}
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*/
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@Deprecated
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protected final void assertNotAborted() throws InterruptedIOException {
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if (isReleased()) {
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throw new InterruptedIOException("Connection has been shut down");
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}
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}
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/**
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* @since 4.1
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* @return value of released flag
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*/
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protected boolean isReleased() {
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return released;
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}
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/**
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* Asserts that there is a valid wrapped connection to delegate to.
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*
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* @throws ConnectionShutdownException if there is no wrapped connection
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* or connection has been aborted
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*/
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protected final void assertValid(
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final OperatedClientConnection wrappedConn) throws ConnectionShutdownException {
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if (isReleased() || wrappedConn == null) {
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throw new ConnectionShutdownException();
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}
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}
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public boolean isOpen() {
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final OperatedClientConnection conn = getWrappedConnection();
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if (conn == null) {
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return false;
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}
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return conn.isOpen();
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}
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public boolean isStale() {
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if (isReleased()) {
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return true;
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}
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final OperatedClientConnection conn = getWrappedConnection();
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if (conn == null) {
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return true;
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}
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return conn.isStale();
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}
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public void setSocketTimeout(final int timeout) {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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conn.setSocketTimeout(timeout);
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}
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public int getSocketTimeout() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.getSocketTimeout();
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}
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public HttpConnectionMetrics getMetrics() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.getMetrics();
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}
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public void flush() throws IOException {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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conn.flush();
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}
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public boolean isResponseAvailable(final int timeout) throws IOException {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.isResponseAvailable(timeout);
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}
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public void receiveResponseEntity(final HttpResponse response)
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throws HttpException, IOException {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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unmarkReusable();
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conn.receiveResponseEntity(response);
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}
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public HttpResponse receiveResponseHeader()
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throws HttpException, IOException {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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unmarkReusable();
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return conn.receiveResponseHeader();
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}
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public void sendRequestEntity(final HttpEntityEnclosingRequest request)
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throws HttpException, IOException {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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unmarkReusable();
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conn.sendRequestEntity(request);
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}
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public void sendRequestHeader(final HttpRequest request)
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throws HttpException, IOException {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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unmarkReusable();
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conn.sendRequestHeader(request);
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}
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public InetAddress getLocalAddress() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.getLocalAddress();
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}
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public int getLocalPort() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.getLocalPort();
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}
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public InetAddress getRemoteAddress() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.getRemoteAddress();
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}
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public int getRemotePort() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.getRemotePort();
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}
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public boolean isSecure() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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return conn.isSecure();
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}
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public void bind(final Socket socket) throws IOException {
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throw new UnsupportedOperationException();
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}
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public Socket getSocket() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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if (!isOpen()) {
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return null;
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}
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return conn.getSocket();
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}
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public SSLSession getSSLSession() {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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if (!isOpen()) {
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return null;
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}
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SSLSession result = null;
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final Socket sock = conn.getSocket();
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if (sock instanceof SSLSocket) {
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result = ((SSLSocket)sock).getSession();
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}
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return result;
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}
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public void markReusable() {
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markedReusable = true;
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}
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public void unmarkReusable() {
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markedReusable = false;
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}
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public boolean isMarkedReusable() {
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return markedReusable;
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}
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public void setIdleDuration(final long duration, final TimeUnit unit) {
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if(duration > 0) {
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this.duration = unit.toMillis(duration);
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} else {
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this.duration = -1;
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}
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}
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public synchronized void releaseConnection() {
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if (released) {
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return;
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}
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released = true;
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connManager.releaseConnection(this, duration, TimeUnit.MILLISECONDS);
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}
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public synchronized void abortConnection() {
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if (released) {
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return;
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}
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released = true;
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unmarkReusable();
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try {
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shutdown();
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} catch (final IOException ignore) {
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}
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connManager.releaseConnection(this, duration, TimeUnit.MILLISECONDS);
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}
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public Object getAttribute(final String id) {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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if (conn instanceof HttpContext) {
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return ((HttpContext) conn).getAttribute(id);
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} else {
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return null;
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}
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}
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public Object removeAttribute(final String id) {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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if (conn instanceof HttpContext) {
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return ((HttpContext) conn).removeAttribute(id);
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} else {
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return null;
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}
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}
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public void setAttribute(final String id, final Object obj) {
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final OperatedClientConnection conn = getWrappedConnection();
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assertValid(conn);
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if (conn instanceof HttpContext) {
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((HttpContext) conn).setAttribute(id, obj);
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}
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}
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}
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