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package com.sun.jersey.client.apache4;
import java.net.URI;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CookieStore;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.params.ClientPNames;
import org.apache.http.client.params.CookiePolicy;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.client.apache4.config.ApacheHttpClient4Config;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProviderFactory;
/**
* A {@link Client} that utilizes the Apache HTTP Client to send and receive
* HTTP request and responses.
*
* The following properties are only supported at construction of this class:
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_CONNECTION_MANAGER}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_HTTP_PARAMS}}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_CREDENTIALS_PROVIDER}}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_DISABLE_COOKIES}}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_PROXY_URI}}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_PROXY_USERNAME}}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_PROXY_PASSWORD}}
* {@link com.sun.jersey.client.apache4.config.ApacheHttpClient4Config#PROPERTY_PREEMPTIVE_BASIC_AUTHENTICATION}}
*
* The default behaviour of the client is different than what it described in the
* the property {@link ClientConfig#PROPERTY_CHUNKED_ENCODING_SIZE}. By default, the apache client
* uses chunked encoding to write the entity. In order to buffer the entity the property
* {@link ApacheHttpClient4Config#PROPERTY_ENABLE_BUFFERING} must be set to true.
*
* Using of authorization is dependent on the chunk encoding setting. If the entity
* buffering is enabled, the entity is buffered and authorization can be performed
* automatically in response to a 401 by sending the request again. When entity buffering
* is disabled (chunked encoding is used) then the property
* {@link ApacheHttpClient4Config#PROPERTY_PREEMPTIVE_BASIC_AUTHENTICATION} must
* be set to {@code true}.
*
* If a {@link com.sun.jersey.api.client.ClientResponse} is obtained and an
* entity is not read from the response then
* {@link com.sun.jersey.api.client.ClientResponse#close() } MUST be called
* after processing the response to release connection-based resources.
*
* @see ApacheHttpClient4Config#PROPERTY_CONNECTION_MANAGER
*
* @author [email protected]
* @author [email protected]
* @author [email protected]
*/
public class ApacheHttpClient4 extends Client {
private final ApacheHttpClient4Handler client4Handler;
/**
* Create a new client instance.
*
*/
public ApacheHttpClient4() {
this(createDefaultClientHandler(null), new DefaultClientConfig(), null);
}
/**
* Create a new client instance.
*
* @param root the root client handler for dispatching a request and
* returning a response.
*/
public ApacheHttpClient4(final ApacheHttpClient4Handler root) {
this(root, new DefaultClientConfig(), null);
}
/**
* Create a new client instance with a client configuration.
*
* @param root the root client handler for dispatching a request and
* returning a response.
* @param config the client configuration.
*/
public ApacheHttpClient4(final ApacheHttpClient4Handler root, final ClientConfig config) {
this(root, config, null);
}
/**
* Create a new instance with a client configuration and a
* component provider.
*
* @param root the root client handler for dispatching a request and
* returning a response.
* @param config the client configuration.
* @param provider the IoC component provider factory.
*/
public ApacheHttpClient4(final ApacheHttpClient4Handler root, final ClientConfig config,
final IoCComponentProviderFactory provider) {
super(root, config, provider);
this.client4Handler = root;
}
/**
* Get the Apache HTTP client handler.
*
* @return the Apache HTTP client handler.
*/
public ApacheHttpClient4Handler getClientHandler() {
return client4Handler;
}
/**
* Create a default client.
*
* @return a default client.
*/
public static ApacheHttpClient4 create() {
return new ApacheHttpClient4(createDefaultClientHandler(null));
}
/**
* Create a default client with client configuration.
*
* @param cc the client configuration.
* @return a default client.
*/
public static ApacheHttpClient4 create(final ClientConfig cc) {
return new ApacheHttpClient4(createDefaultClientHandler(cc), cc);
}
/**
* Create a default client with client configuration and component provider.
*
* @param cc the client configuration.
* @param provider the IoC component provider factory.
* @return a default client.
*/
public static ApacheHttpClient4 create(final ClientConfig cc, final IoCComponentProviderFactory provider) {
return new ApacheHttpClient4(createDefaultClientHandler(cc), cc, provider);
}
/**
* Create a default Apache HTTP client handler.
*
* @param cc ClientConfig instance. Might be null.
*
* @return a default Apache HTTP client handler.
*/
private static ApacheHttpClient4Handler createDefaultClientHandler(final ClientConfig cc) {
Object connectionManager = null;
Object httpParams = null;
if(cc != null) {
connectionManager = cc.getProperties().get(ApacheHttpClient4Config.PROPERTY_CONNECTION_MANAGER);
if(connectionManager != null) {
if(!(connectionManager instanceof ClientConnectionManager)) {
Logger.getLogger(ApacheHttpClient4.class.getName()).log(
Level.WARNING,
"Ignoring value of property " + ApacheHttpClient4Config.PROPERTY_CONNECTION_MANAGER +
" (" + connectionManager.getClass().getName() +
") - not instance of org.apache.http.conn.ClientConnectionManager."
);
connectionManager = null;
}
}
httpParams = cc.getProperties().get(ApacheHttpClient4Config.PROPERTY_HTTP_PARAMS);
if(httpParams != null) {
if(!(httpParams instanceof HttpParams)) {
Logger.getLogger(ApacheHttpClient4.class.getName()).log(
Level.WARNING,
"Ignoring value of property " + ApacheHttpClient4Config.PROPERTY_HTTP_PARAMS +
" (" + httpParams.getClass().getName() +
") - not instance of org.apache.http.params.HttpParams."
);
httpParams = null;
}
}
}
final DefaultHttpClient client = new DefaultHttpClient(
(ClientConnectionManager)connectionManager,
(HttpParams)httpParams
);
CookieStore cookieStore = null;
boolean preemptiveBasicAuth = false;
if(cc != null) {
for(Map.Entry entry : cc.getProperties().entrySet())
client.getParams().setParameter(entry.getKey(), entry.getValue());
if (cc.getPropertyAsFeature(ApacheHttpClient4Config.PROPERTY_DISABLE_COOKIES))
client.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.IGNORE_COOKIES);
Object credentialsProvider = cc.getProperty(ApacheHttpClient4Config.PROPERTY_CREDENTIALS_PROVIDER);
if(credentialsProvider != null && (credentialsProvider instanceof CredentialsProvider)) {
client.setCredentialsProvider((CredentialsProvider)credentialsProvider);
}
final Object proxyUri = cc.getProperties().get(ApacheHttpClient4Config.PROPERTY_PROXY_URI);
if(proxyUri != null) {
final URI u = getProxyUri(proxyUri);
final HttpHost proxy = new HttpHost(u.getHost(), u.getPort(), u.getScheme());
if(cc.getProperties().containsKey(ApacheHttpClient4Config.PROPERTY_PROXY_USERNAME) &&
cc.getProperties().containsKey(ApacheHttpClient4Config.PROPERTY_PROXY_PASSWORD)) {
client.getCredentialsProvider().setCredentials(
new AuthScope(u.getHost(), u.getPort()),
new UsernamePasswordCredentials(
cc.getProperty(ApacheHttpClient4Config.PROPERTY_PROXY_USERNAME).toString(),
cc.getProperty(ApacheHttpClient4Config.PROPERTY_PROXY_PASSWORD).toString())
);
}
client.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
}
preemptiveBasicAuth = cc.getPropertyAsFeature(ApacheHttpClient4Config.PROPERTY_PREEMPTIVE_BASIC_AUTHENTICATION);
}
if(client.getParams().getParameter(ClientPNames.COOKIE_POLICY) == null || !client.getParams().getParameter(ClientPNames.COOKIE_POLICY).equals(CookiePolicy.IGNORE_COOKIES)) {
cookieStore = new BasicCookieStore();
client.setCookieStore(cookieStore);
}
return new ApacheHttpClient4Handler(client, cookieStore, preemptiveBasicAuth);
}
private static URI getProxyUri(final Object proxy) {
if (proxy instanceof URI) {
return (URI) proxy;
} else if (proxy instanceof String) {
return URI.create((String) proxy);
} else {
throw new ClientHandlerException("The proxy URI (" + ApacheHttpClient4Config.PROPERTY_PROXY_URI +
") property MUST be an instance of String or URI");
}
}
}