com.google.resting.rest.client.BaseRESTClient.java Source code

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Here is the source code for com.google.resting.rest.client.BaseRESTClient.java

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/*
* Copyright (C) 2013 Google Code.
*
* 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.google.resting.rest.client;

import java.util.List;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpRequest;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.Credentials;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.impl.client.DefaultHttpClient;
//import org.apache.http.impl.nio.client.DefaultHttpAsyncClient;
//import org.apache.http.nio.client.HttpAsyncClient;
//import org.apache.http.nio.reactor.IOReactorException;
import org.apache.http.params.HttpParams;

import com.google.resting.component.ServiceContext;
import com.google.resting.component.Verb;

/**
 * Base class for REST client
 * 
 * @author sujata.de
 * @since resting 0.7
 *
 */
public abstract class BaseRESTClient {

    protected static HttpRequest buildHttpRequest(ServiceContext serviceContext) {

        String path = serviceContext.getPath();
        Verb verb = serviceContext.getVerb();
        HttpEntity httpEntity = serviceContext.getHttpEntity();
        List<Header> headers = serviceContext.getHeaders();

        if (verb == Verb.GET) {
            HttpGet httpGet = new HttpGet(path);
            if (headers != null) {
                for (Header header : headers)
                    httpGet.addHeader(header);
            }
            return httpGet;

        } else if (verb == Verb.POST) {
            HttpPost httpPost = new HttpPost(path);
            if (headers != null) {
                for (Header header : headers)
                    httpPost.addHeader(header);
            }
            if (httpEntity != null)
                httpPost.setEntity(httpEntity);
            return httpPost;

        } else if (verb == Verb.DELETE) {
            HttpDelete httpDelete = new HttpDelete(path);
            if (headers != null) {
                for (Header header : headers)
                    httpDelete.addHeader(header);
            }
            return httpDelete;

        } else {
            HttpPut httpPut = new HttpPut(path);
            if (headers != null) {
                for (Header header : headers)
                    httpPut.addHeader(header);
            }
            if (httpEntity != null)
                httpPut.setEntity(httpEntity);
            return httpPut;
        } //if
    }//buildHttpRequest

    protected static DefaultHttpClient buildHttpClient(ServiceContext serviceContext) {
        DefaultHttpClient httpClient = null;
        HttpParams httpParams = null;
        HttpContext httpContext = serviceContext.getHttpContext();
        Credentials credentials = null;
        if (httpContext != null) {
            httpParams = httpContext.getHttpParams();
            credentials = httpContext.getCredentials();
        }
        if (httpParams != null)
            httpClient = new DefaultHttpClient(httpParams);
        else
            httpClient = new DefaultHttpClient();

        if (credentials != null)
            httpClient.getCredentialsProvider().setCredentials(AuthScope.ANY, credentials);

        return httpClient;
    }//buildHttpClient

}//BaseRESTClient