com.stackify.api.common.http.HttpClient Maven / Gradle / Ivy
/*
* Copyright 2014 Stackify
*
* 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.stackify.api.common.http;
import com.stackify.api.common.ApiConfiguration;
import com.stackify.api.common.util.CharStreams;
import com.stackify.api.common.util.Preconditions;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.Proxy;
import java.net.URL;
import java.util.zip.GZIPOutputStream;
/**
* HttpClient
* @author Eric Martin
*/
public class HttpClient {
/**
* CONNECT_TIMEOUT
*/
private static final int CONNECT_TIMEOUT = 5000;
/**
* READ_TIMEOUT
*/
private static final int READ_TIMEOUT = 15000;
/**
* API configuration
*/
private final ApiConfiguration apiConfig;
/**
* HTTP proxy
*/
private final Proxy proxy;
/**
* Constructor
* @param apiConfig API configuration
*/
public HttpClient(final ApiConfiguration apiConfig) {
Preconditions.checkNotNull(apiConfig);
this.apiConfig = apiConfig;
if (apiConfig.getHttpProxyHost() != null &&
!apiConfig.getHttpProxyHost().isEmpty() &&
apiConfig.getHttpProxyPort() != null &&
!apiConfig.getHttpProxyPort().isEmpty()) {
this.proxy = HttpProxy.build(apiConfig.getHttpProxyHost(), apiConfig.getHttpProxyPort());
} else {
this.proxy = HttpProxy.fromSystemProperties();
}
}
/**
* Posts data to stackify
* @param path REST path
* @param jsonBytes JSON bytes
* @return Response string
* @throws IOException
* @throws HttpException
*/
public String post(final String path, final byte[] jsonBytes) throws IOException, HttpException {
return post(path, jsonBytes, false);
}
/**
* Posts data to stackify
* @param path REST path
* @param jsonBytes JSON bytes
* @param gzip True if the post should be gzipped, false otherwise
* @return Response string
* @throws IOException
* @throws HttpException
*/
public String post(final String path, final byte[] jsonBytes, final boolean gzip) throws IOException, HttpException {
Preconditions.checkNotNull(path);
Preconditions.checkArgument(!path.isEmpty());
Preconditions.checkNotNull(jsonBytes);
Preconditions.checkArgument(0 < jsonBytes.length);
HttpURLConnection connection = null;
try {
URL url = new URL(apiConfig.getApiUrl() + path);
// request properties
connection = (HttpURLConnection) url.openConnection(proxy);
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/json");
if (gzip) {
connection.setRequestProperty("Content-Encoding", "gzip");
}
connection.setRequestProperty("X-Stackify-Key", apiConfig.getApiKey());
connection.setRequestProperty("X-Stackify-PV", "V1");
connection.setRequestMethod("POST");
connection.setConnectTimeout(CONNECT_TIMEOUT);
connection.setReadTimeout(READ_TIMEOUT);
// write the post body
OutputStream stream = null;
if (gzip) {
stream = new BufferedOutputStream(new GZIPOutputStream(connection.getOutputStream()));
} else {
stream = new BufferedOutputStream(connection.getOutputStream());
}
stream.write(jsonBytes);
stream.flush();
stream.close();
// read the response
int statusCode = connection.getResponseCode();
if (statusCode != HttpURLConnection.HTTP_OK) {
throw new HttpException(statusCode);
}
return readAndClose(connection.getInputStream());
} finally {
if (connection != null) {
// read and close the input stream
try {
readAndClose(connection.getInputStream());
} catch (Throwable t) {
// do nothing
}
// read and close the error stream
try {
readAndClose(connection.getErrorStream());
} catch (Throwable t) {
// do nothing
}
}
}
}
/**
* Reads all remaining contents from the stream and closes it
* @param stream The stream
* @return The contents of the stream
* @throws IOException
*/
private String readAndClose(final InputStream stream) throws IOException {
String contents = null;
if (stream != null) {
contents = CharStreams.toString(new InputStreamReader(new BufferedInputStream(stream), "UTF-8"));
stream.close();
}
return contents;
}
}
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