| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you 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 org.apache.calcite.runtime; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.UnsupportedEncodingException; |
| import java.io.Writer; |
| import java.net.HttpURLConnection; |
| import java.net.URL; |
| import java.net.URLEncoder; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Map; |
| |
| /** |
| * Utilities for connecting to REST services such as Splunk via HTTP. |
| */ |
| public class HttpUtils { |
| private HttpUtils() {} |
| |
| public static HttpURLConnection getURLConnection(String url) |
| throws IOException { |
| return (HttpURLConnection) new URL(url).openConnection(); |
| } |
| |
| public static void appendURLEncodedArgs( |
| StringBuilder out, Map<String, String> args) { |
| int i = 0; |
| try { |
| for (Map.Entry<String, String> me : args.entrySet()) { |
| if (i++ != 0) { |
| out.append("&"); |
| } |
| out.append(URLEncoder.encode(me.getKey(), "UTF-8")) |
| .append("=") |
| .append(URLEncoder.encode(me.getValue(), "UTF-8")); |
| } |
| } catch (UnsupportedEncodingException ignore) { |
| // ignore |
| } |
| } |
| |
| public static void appendURLEncodedArgs( |
| StringBuilder out, CharSequence... args) { |
| if (args.length % 2 != 0) { |
| throw new IllegalArgumentException( |
| "args should contain an even number of items"); |
| } |
| try { |
| int appended = 0; |
| for (int i = 0; i < args.length; i += 2) { |
| if (args[i + 1] == null) { |
| continue; |
| } |
| if (appended++ > 0) { |
| out.append("&"); |
| } |
| out.append(URLEncoder.encode(args[i].toString(), "UTF-8")) |
| .append("=") |
| .append(URLEncoder.encode(args[i + 1].toString(), "UTF-8")); |
| } |
| } catch (UnsupportedEncodingException ignore) { |
| // ignore |
| } |
| } |
| |
| public static InputStream post( |
| String url, |
| CharSequence data, |
| Map<String, String> headers) throws IOException { |
| return post(url, data, headers, 10000, 60000); |
| } |
| |
| public static InputStream post( |
| String url, |
| CharSequence data, |
| Map<String, String> headers, |
| int cTimeout, |
| int rTimeout) throws IOException { |
| return executeMethod(data == null ? "GET" : "POST", url, data, headers, |
| cTimeout, rTimeout); |
| } |
| |
| public static InputStream executeMethod( |
| String method, String url, |
| CharSequence data, Map<String, String> headers, |
| int cTimeout, int rTimeout) throws IOException { |
| // NOTE: do not log "data" or "url"; may contain user name or password. |
| final HttpURLConnection conn = getURLConnection(url); |
| conn.setRequestMethod(method); |
| conn.setReadTimeout(rTimeout); |
| conn.setConnectTimeout(cTimeout); |
| |
| if (headers != null) { |
| for (Map.Entry<String, String> me : headers.entrySet()) { |
| conn.setRequestProperty(me.getKey(), me.getValue()); |
| } |
| } |
| if (data == null) { |
| return conn.getInputStream(); |
| } |
| conn.setDoOutput(true); |
| try (Writer w = |
| new OutputStreamWriter(conn.getOutputStream(), StandardCharsets.UTF_8)) { |
| w.write(data.toString()); |
| w.flush(); // Get the response |
| return conn.getInputStream(); |
| } |
| } |
| } |