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• HTTPBuilder.java

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com.jayway.restassured.internal.http.HTTPBuilder Maven / Gradle / Ivy

/*
 * Copyright 2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.jayway.restassured.internal.http;

import com.jayway.restassured.config.EncoderConfig;
import com.jayway.restassured.http.ContentType;
import groovy.lang.Closure;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPatch;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.AbstractHttpClient;
import org.apache.http.protocol.HttpContext;
import org.codehaus.groovy.runtime.DefaultGroovyMethods;
import org.codehaus.groovy.runtime.MethodClosure;

import java.io.*;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Map;

/** 

 * Groovy DSL for easily making HTTP requests, and handling request and response
 * data.  This class adds a number of convenience mechanisms built on top of 
 * Apache HTTPClient for things like URL-encoded POSTs and REST requests that 
 * require building and parsing JSON or XML.  Convenient access to a few common
 * authentication methods is also available.
 *
 *
 * 
Conventions
 * 
HTTPBuilder has properties for default headers, URI, contentType, etc.  
 * All of these values are also assignable (and in many cases, in much finer 
 * detail) from the {@link RequestConfigDelegate} as well.  In any cases where the value
 * is not set on the delegate (from within a request closure,) the builder's 
 * default value is used.  
 *
 * 
For instance, any methods that do not take a uri parameter 
 * assume you will set the uri property in the request closure or 
 * use HTTPBuilder's assigned {@link #getUri() default URI}.
 *
 *
 * 
Response Parsing
 * 
By default, HTTPBuilder uses {@link com.jayway.restassured.http.ContentType#ANY} as the default
 * content-type.  This means the value of the request's Accept 
 * header is */*, and the response parser is determined 
 * based on the response content-type header. 
 *
 * 
If any contentType is given (either in 
 * {@link #setContentType(Object)} or as a request method parameter), the 
 * builder will attempt to parse the response using that content-type, 
 * regardless of what the server actually responds with.  
 *
 *
 * 
Examples:
 * Perform an HTTP GET and print the response:
 * 
 *   def http = new HTTPBuilder('http://www.google.com')
 *
 *   http.get( path : '/search', 
 *             contentType : TEXT,
 *             query : [q:'Groovy'] ) { resp, reader ->
 *     println "response status: ${resp.statusLine}"
 *     println 'Response data: -----'
 *     System.out << reader
 *     println '\n--------------------'
 *   }
 * 
 *
 * Long form for other HTTP methods, and response-code-specific handlers.  
 * This is roughly equivalent to the above example.
 *
 * 
 *   def http = new HTTPBuilder('http://www.google.com/search?q=groovy')
 *
 *   http.request( GET, TEXT ) { req ->
 *
 *     // executed for all successful responses:
 *     response.success = { resp, reader ->
 *       println 'my response handler!'
 *       assert resp.statusLine.statusCode == 200
 *       println resp.statusLine
 *       System.out << reader // print response stream
 *     }
 *
 *     // executed only if the response status code is 401:
 *     response.'404' = { resp -> 
 *       println 'not found!'
 *     }
 *   }
 * 
 *
 * You can also set a default response handler called for any status
 * code > 399 that is not matched to a specific handler. Setting the value
 * outside a request closure means it will apply to all future requests with
 * this HTTPBuilder instance:
 * 
 *   http.handler.failure = { resp ->
 *     println "Unexpected failure: ${resp.statusLine}"
 *   }
 * 
 *
 *
 * And...  Automatic response parsing for registered content types!
 *
 * 
 *   http.request( 'http://ajax.googleapis.com', GET, JSON ) {
 *     uri.path = '/ajax/services/search/web'
 *     uri.query = [ v:'1.0', q: 'Calvin and Hobbes' ]
 *
 *     response.success = { resp, json ->
 *       assert json.size() == 3
 *       println "Query response: "
 *       json.responseData.results.each {
 *         println "  ${it.titleNoFormatting} : ${it.visibleUrl}"
 *       }
 *     }
 *   }
 * 
 *
 *
 * @author Tom Nichols
 */
public abstract class HTTPBuilder {

    protected AbstractHttpClient client;
    protected URIBuilder defaultURI = null;
    protected AuthConfig auth = new AuthConfig( this );

    protected final Log log = LogFactory.getLog( getClass() );

    protected Object defaultContentType = ContentType.ANY;
    protected Object defaultRequestContentType = null;
    protected final Map defaultResponseHandlers =
            new StringHashMap( buildDefaultResponseHandlers() );
    protected ContentEncodingRegistry contentEncodingHandler = new ContentEncodingRegistry();

    protected final Map defaultRequestHeaders = new StringHashMap