com.sparkplatform.api.core.ConnectionApacheHttp.java Source code

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Here is the source code for com.sparkplatform.api.core.ConnectionApacheHttp.java

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//
//  Copyright (c) 2013 Financial Business Systems, Inc. All rights reserved.
//
//  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.sparkplatform.api.core;

import java.io.UnsupportedEncodingException;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
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.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.apache.log4j.Logger;

import com.sparkplatform.api.SparkAPIClientException;

/**
 * Connection wrapper for the Apache HTTPClient library.
 */
public class ConnectionApacheHttp extends Connection<Response> {

    @SuppressWarnings("unused")
    private static Logger logger = Logger.getLogger(ConnectionApacheHttp.class);

    private HttpClient client;
    private Configuration config;
    private HttpHost host;
    private ResponseHandler<Response> handler;

    private Map<String, String> headers;

    public ConnectionApacheHttp(Configuration config) {
        this.config = config;
        init();
    }

    private void setHeaders(HttpRequest r) {
        if (headers != null) {
            for (String key : headers.keySet())
                r.addHeader(key, headers.get(key));
        }
    }

    @Override
    public Response get(String path, Map<String, String> options) throws SparkAPIClientException {
        HttpRequest r = new HttpGet(path);
        setHeaders(r);
        return request(r);
    }

    @Override
    public Response delete(String path, Map<String, String> options) throws SparkAPIClientException {
        HttpRequest r = new HttpDelete(path);
        setHeaders(r);
        return request(r);
    }

    @Override
    public Response post(String path, String body, Map<String, String> options) throws SparkAPIClientException {
        HttpPost r = new HttpPost(path);
        setHeaders(r);
        setData(r, body);
        return request(r);
    }

    @Override
    public Response put(String path, String body, Map<String, String> options) throws SparkAPIClientException {
        HttpPut r = new HttpPut(path);
        setHeaders(r);
        setData(r, body);
        return request(r);
    }

    private static void setData(HttpEntityEnclosingRequestBase r, String body) throws SparkAPIClientException {
        HttpEntity data;
        try {
            data = new StringEntity(body);
            ((StringEntity) data).setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
            r.setEntity(data);
        } catch (UnsupportedEncodingException e) {
            throw new SparkAPIClientException(
                    "Message cannot be sent as the body is encoded in an unsupported format.", e);
        }
    }

    protected Response request(HttpRequest r) throws SparkAPIClientException {
        Response rs = null;
        try {
            rs = client.execute(host, r, handler);
        } catch (Exception e) {
            throw new SparkAPIClientException("Connection failure with HTTP.  Check your url settings.", e);
        }
        rs.checkFailures();
        return rs;
    }

    /**
     * Reset the connection configuration
     */
    public final void reset() {
        init();
        resetChild();
    }

    private void init() {
        client = new DefaultHttpClient();
        host = new HttpHost(config.getEndpoint());
        handler = new JsonResponseHandler();
    }

    /**
     * Allow inheriting classes to reset themselves
     */
    protected void resetChild() {
    }

    protected HttpClient getClient() {
        return client;
    }

    protected void setClient(HttpClient client) {
        this.client = client;
    }

    protected Configuration getConfig() {
        return config;
    }

    protected void setConfig(Configuration config) {
        this.config = config;
    }

    protected HttpHost getHost() {
        return host;
    }

    protected void setHost(HttpHost host) {
        this.host = host;
    }

    public Map<String, String> getHeaders() {
        return headers;
    }

    public void setHeaders(Map<String, String> headers) {
        this.headers = headers;
    }

}