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WebAHCClient.java
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WebAHCClient.java
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/*******************************************************************************
* Copyright (c) 2010-2011 Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
* The Apache License v2.0 is available at
* http://www.apache.org/licenses/LICENSE-2.0.html
* You may elect to redistribute this code under either of these licenses.
*******************************************************************************/
package org.sonatype.restsimple.client;
import com.ning.http.client.ProxyServer;
import com.ning.http.client.Realm;
import com.ning.http.client.Realm.RealmBuilder;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.UniformInterfaceException;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.json.JSONConfiguration;
import com.sun.jersey.api.representation.Form;
import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.sonatype.restsimple.api.DefaultServiceDefinition;
import org.sonatype.restsimple.api.DeleteServiceHandler;
import org.sonatype.restsimple.api.GetServiceHandler;
import org.sonatype.restsimple.api.MediaType;
import org.sonatype.restsimple.api.PostServiceHandler;
import org.sonatype.restsimple.api.PutServiceHandler;
import org.sonatype.restsimple.api.ServiceDefinition;
import org.sonatype.restsimple.api.ServiceHandler;
import org.sonatype.restsimple.spi.ServiceHandlerMapper;
import org.sonatype.spice.jersey.client.ahc.AhcHttpClient;
import org.sonatype.spice.jersey.client.ahc.config.DefaultAhcConfig;
import javax.ws.rs.core.UriBuilder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* A simple HTTP client which support {@link ServiceDefinition} as a source of information when executing the request.
* The information contained in {@link ServiceDefinition} will be used when setting the content-type, accept, etc. and
* will also be used to serialize and de-serialize the request/response. As an example, you can create a simple petstore
* application by doing
* <pre>
* {@code
*
* Web web = new WebAHCClient(serviceDefinition);
Map<String, String> m = new HashMap<String, String>();
m.put("Content-Type", acceptHeader);
Pet pet = web.clientOf(targetUrl + "/addPet/myPet")
.headers(m)
.post(new Pet("pouetpouet"), Pet.class);
* }
* </pre>
* The class can also be used without a service definition. All the request information must be "manually" configured.
* <pre>
* <p><blockquote><pre>
*
Web web = new WebAHCClient();
Map<String, String> m = new HashMap<String, String>();
m.put("Content-Type", acceptHeader);
m.put("Accept", acceptHeader);
Pet pet = web.clientOf(targetUrl + "/addPet/myPet")
.headers(m)
.post(new Pet("pouetpouet"), Pet.class);
*
* }
* </pre></blockquote>
* The client support content negotiation as defined in RFC 2295 via the
* {@link WebAHCClient#supportedContentType(org.sonatype.restsimple.api.MediaType)}
*
* This client build on top of the Sonatype's Jersey AHC Client.
*/
public class WebAHCClient implements WebClient {
public final boolean compatWithSitebricks;
private String uri;
private final ServiceDefinition serviceDefinition;
private Map<String, String> headers = Collections.emptyMap();
private Map<String, String> queryString = Collections.emptyMap();
private Map<String, String> matrixParams = Collections.emptyMap();
private List<MediaType> supportedContentType = new ArrayList<MediaType>();
private NegotiationHandler negotiateHandler;
private Realm realm;
private ProxyServer proxyServer;
/**
* Create a WebAHCClient Client
*/
public WebAHCClient() {
this(new DefaultServiceDefinition());
}
/**
* Create a WebAHCClient Client and populate it using the {@link ServiceDefinition}
*
* @param serviceDefinition a {@link ServiceDefinition}
*/
public WebAHCClient(ServiceDefinition serviceDefinition) {
this(serviceDefinition, new RFC2295NegotiationHandler());
}
/**
* Create a WebAHCClient Client and populate it using the {@link ServiceDefinition}
*
* @param serviceDefinition a {@link ServiceDefinition}
*/
public WebAHCClient(ServiceDefinition serviceDefinition, boolean compatWithSitebricks) {
this(serviceDefinition, new RFC2295NegotiationHandler(), compatWithSitebricks);
}
/**
* Create a WebAHCClient Client and populate it using the {@link ServiceDefinition}.
*
* @param serviceDefinition a {@link ServiceDefinition}
* @param negotiateHandler an implementation of {@link NegotiationHandler}
*/
public WebAHCClient(ServiceDefinition serviceDefinition, NegotiationHandler negotiateHandler) {
this(serviceDefinition, negotiateHandler, false);
}
/**
* Create a WebAHCClient Client and populate it using the {@link ServiceDefinition}.
*
* @param serviceDefinition a {@link ServiceDefinition}
* @param negotiateHandler an implementation of {@link NegotiationHandler}
*/
public WebAHCClient(ServiceDefinition serviceDefinition, NegotiationHandler negotiateHandler, boolean compatWithSitebricks) {
this.serviceDefinition = serviceDefinition;
this.negotiateHandler = negotiateHandler;
this.compatWithSitebricks = compatWithSitebricks;
}
/**
* {@inheritDoc}
*/
@Override
public WebClient headers(Map<String, String> headers) {
this.headers = headers;
return this;
}
/**
* {@inheritDoc}
*/
@Override
public WebClient queryString(Map<String, String> queryString) {
this.queryString = queryString;
return this;
}
/**
* {@inheritDoc}
*/
@Override
public WebClient matrixParams(Map<String, String> matrixParams) {
this.matrixParams = matrixParams;
return this;
}
/**
* {@inheritDoc}
*/
@Override
public WebClient clientOf(String uri) {
this.uri = uri;
return this;
}
/**
* {@inheritDoc}
*/
@Override
public <T> T post(Map<String, String> formParams, Class<T> t) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
try {
Form form = new Form();
for (Map.Entry<String, String> e : formParams.entrySet()) {
form.add(e.getKey(), e.getValue());
}
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.POST, true).post(t, form);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return post(formParams, t);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public <T> T post(Object o, Class<T> responseEntity) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
o = quoteString(o);
try {
WebResource r = buildRequest(asyncClient);
ClientResponse response = headers(r, TYPE.POST).post(ClientResponse.class, o);
checkStatus(response);
return checkVoid(response, responseEntity);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return post(o, responseEntity);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public Object post(Object o) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
o = quoteString(o);
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.POST).post(findEntity(r, TYPE.POST), o);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return post(o);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public Object delete(Object o) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
o = quoteString(o);
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.DELETE).delete(findEntity(r, TYPE.DELETE), o);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return delete(o);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public <T> T delete(Class<T> t) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.DELETE).delete(t);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return delete(t);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public Object delete() {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.DELETE).delete(findEntity(r, TYPE.DELETE));
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return delete();
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public <T> T delete(Object o, Class<T> responseEntity) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
o = quoteString(o);
try {
WebResource r = buildRequest(asyncClient);
ClientResponse response = headers(r, TYPE.DELETE).delete(ClientResponse.class, o);
checkStatus(response);
return checkVoid(response, responseEntity);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return delete(o, responseEntity);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public <T> T get(Class<T> t) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.GET).get(t);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return get(t);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public Object get() {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.GET).get(findEntity(r, TYPE.GET));
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return get();
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public <T> T put(Object o, Class<T> responseEntity) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
o = quoteString(o);
try {
WebResource r = buildRequest(asyncClient);
r.entity(o);
ClientResponse response = headers(r, TYPE.PUT).put(ClientResponse.class, o);
checkStatus(response);
return checkVoid(response, responseEntity);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return put(o, responseEntity);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public Object put(Object o) {
AhcHttpClient asyncClient = AhcHttpClient.create(createAhcConfig());
o = quoteString(o);
try {
WebResource r = buildRequest(asyncClient);
return headers(r, TYPE.PUT).put(findEntity(r, TYPE.PUT), o);
} catch (UniformInterfaceException u) {
headers.put(negotiateHandler.challengedHeaderName(), negotiate(u));
return put(o);
} finally {
asyncClient.destroy();
}
}
/**
* {@inheritDoc}
*/
@Override
public WebClient supportedContentType(MediaType mediaType) {
supportedContentType.add(mediaType);
return this;
}
/**
* {@inheritDoc}
*/
@Override
public WebClient auth(final AuthScheme scheme, final String user, final String password) {
realm = new RealmBuilder().setPrincipal(user).setPassword(password).setScheme(mapScheme(scheme)).build();
return this;
}
/**
* {@inheritDoc}
*/
@Override
public WebClient proxyWith(final ProxyScheme scheme, String host, int port, String user, String password) {
proxyServer = new ProxyServer(mapProxyScheme(scheme), host, port, user, password);
return null;
}
private DefaultAhcConfig createAhcConfig(){
DefaultAhcConfig ahcConfig = new DefaultAhcConfig();
ahcConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
ahcConfig.getClasses().add(JacksonJsonProvider.class);
ahcConfig.getAsyncHttpClientConfigBuilder().setAllowPoolingConnection(false);
if (realm != null) {
ahcConfig.getAsyncHttpClientConfigBuilder().setRealm(realm);
}
if (proxyServer != null) {
ahcConfig.getAsyncHttpClientConfigBuilder().setProxyServer(proxyServer);
}
return ahcConfig;
}
private Realm.AuthScheme mapScheme(AuthScheme scheme) {
switch (scheme) {
case BASIC:
return Realm.AuthScheme.BASIC;
case DIGEST:
return Realm.AuthScheme.DIGEST;
case KERBEROS:
return Realm.AuthScheme.KERBEROS;
case SPNEGO:
return Realm.AuthScheme.SPNEGO;
default:
throw new IllegalStateException();
}
}
private ProxyServer.Protocol mapProxyScheme(ProxyScheme scheme) {
switch (scheme) {
case HTTP:
return ProxyServer.Protocol.HTTP;
case HTTPS:
return ProxyServer.Protocol.HTTPS;
case NTLM:
return ProxyServer.Protocol.NTLM;
case KERBEROS:
return ProxyServer.Protocol.KERBEROS;
case SPNEGO:
return ProxyServer.Protocol.SPNEGO;
default:
throw new IllegalStateException();
}
}
private String negotiate(UniformInterfaceException u) {
return negotiateHandler.negotiate(supportedContentType,
u.getResponse().getHeaders(),
u.getResponse().getStatus(),
u.getResponse().getClientResponseStatus().getReasonPhrase());
}
private WebResource buildRequest(AhcHttpClient asyncClient) {
UriBuilder u = UriBuilder.fromUri(uri);
if (matrixParams.size() > 0) {
for (Map.Entry<String, String> e : matrixParams.entrySet()) {
u.matrixParam(e.getKey(), e.getValue());
}
}
WebResource r = asyncClient.resource(u.build());
if (queryString != null && queryString.size() > 0) {
for (Map.Entry<String, String> e : queryString.entrySet()) {
r = r.queryParam(e.getKey(), e.getValue());
}
}
return r;
}
private Class<?> findEntity(WebResource r, TYPE type) {
Class<?> clazz;
for (ServiceHandler s : serviceDefinition.serviceHandlers()) {
clazz = s.consumeClass();
// The latest entity as the one associated with the proper service handler.
if (type == TYPE.GET && GetServiceHandler.class.isAssignableFrom(s.getClass())) {
return clazz;
} else if (type == TYPE.POST && PostServiceHandler.class.isAssignableFrom(s.getClass())) {
return clazz;
} else if (type == TYPE.PUT && PutServiceHandler.class.isAssignableFrom(s.getClass())) {
return clazz;
} else if (type == TYPE.DELETE && DeleteServiceHandler.class.isAssignableFrom(s.getClass())) {
return clazz;
}
}
return String.class;
}
private WebResource.Builder headers(WebResource r, TYPE type) {
return headers(r, type, false);
}
@Override
public String toString() {
return "WebAHCClient{" +
"uri='" + uri + '\'' +
", serviceDefinition=" + serviceDefinition +
", headers=" + headers +
", queryString=" + queryString +
", matrixParams=" + matrixParams +
", supportedContentType=" + supportedContentType +
'}';
}
private WebResource.Builder headers(WebResource r, TYPE type, boolean formEncoded) {
WebResource.Builder builder = r.getRequestBuilder();
ServiceHandlerMapper mapper = new ServiceHandlerMapper(serviceDefinition.serviceHandlers());
boolean contentTypeSet = false;
boolean acceptTypeSet = false;
String urlPath = r.getURI().getPath();
String path = serviceDefinition.path();
if (!path.equals("") || !path.equals("/")) {
urlPath = urlPath.substring(urlPath.indexOf(path) + path.length());
}
ServiceHandler sh = null;
for (String p : urlPath.split("/")) {
sh = mapper.map(type.name().toLowerCase(), p);
if (sh != null) break;
}
if (sh == null) {
sh = mapper.map(type.name().toLowerCase(), urlPath);
}
List<MediaType> list;
if (sh != null) {
list = sh.mediaToProduce();
} else {
list = new ArrayList<MediaType>();
list = serviceDefinition.mediaToProduce();
}
if (sh != null && sh.consumeMediaType() != null) {
builder.header("Accept", sh.consumeMediaType().toMediaType());
acceptTypeSet = true;
}
if (list.size() > 0) {
for (MediaType m : list) {
if (headers.get("Content-Type") == null && !formEncoded) {
builder.header("Content-Type", m.toMediaType());
contentTypeSet = true;
}
}
}
if (headers.size() > 0) {
for (Map.Entry<String, String> e : headers.entrySet()) {
builder.header(e.getKey(), e.getValue());
if (e.getKey().equalsIgnoreCase("Content-Type")) {
contentTypeSet = true;
} else if (e.getKey().equalsIgnoreCase("Accept")) {
acceptTypeSet = true;
}
}
}
if (!contentTypeSet && !formEncoded) {
builder.header("Content-Type", "text/json");
}
if (!acceptTypeSet) {
builder.header("Accept", "*/*");
}
return builder;
}
private void checkStatus(ClientResponse response) {
if (response.getStatus() > 299) {
String reasonPhrase = "";
if (response.getClientResponseStatus() != null) {
reasonPhrase = response.getClientResponseStatus().getReasonPhrase();
}
throw new WebException(response.getStatus(), reasonPhrase);
}
}
private <T> T checkVoid(ClientResponse response, Class<T> responseEntity) {
if (Void.class.isAssignableFrom(responseEntity) || responseEntity == void.class) {
return null;
} else {
return response.getEntity(responseEntity);
}
}
protected Object quoteString(Object s) {
if (compatWithSitebricks && String.class.isAssignableFrom(s.getClass())) {
return "\"" + s + "\"";
} else {
return s;
}
}
}