Java tutorial
/* * Copyright WSO2, Inc. (http://wso2.com) * * 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 org.wso2.carbon.cloud.gateway.common; import java.io.*; import java.net.Socket; import java.net.SocketException; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.concurrent.BlockingQueue; import org.apache.axis2.AxisFault; import org.apache.axis2.transport.http.HTTPConstants; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.thrift.protocol.TBinaryProtocol; import org.apache.thrift.protocol.TProtocol; import org.apache.thrift.transport.TSSLTransportFactory; import org.apache.thrift.transport.TTransport; import org.apache.thrift.transport.TTransportException; import org.wso2.carbon.base.ServerConfiguration; import org.wso2.carbon.cloud.gateway.common.thrift.gen.CloudGatewayService; import org.wso2.carbon.cloud.gateway.common.thrift.gen.Message; import org.wso2.carbon.core.RegistryResources; import org.wso2.carbon.core.util.CryptoException; import org.wso2.carbon.core.util.CryptoUtil; import org.wso2.carbon.utils.NetworkUtils; public class CGUtils { private static final Log log = LogFactory.getLog(CGUtils.class); private static Properties prop; static { prop = loadProperties("cg.properties"); } /** * Prevents this utility class being instantiated */ private CGUtils() { } /** * Returns an instance of CG_TRANSPORT_NAME thrift client * * @param hostName thrift server host name * @param port thrift server port client should connect to * @param timeOut the thrift client timeout * @param trustStorePath the trust store to use for this client * @param trustStorePassWord the password of the trust store * @return a CG_TRANSPORT_NAME thrift client */ public static CloudGatewayService.Client getCGThriftClient(final String hostName, final int port, final int timeOut, final String trustStorePath, final String trustStorePassWord) { try { TSSLTransportFactory.TSSLTransportParameters params = new TSSLTransportFactory.TSSLTransportParameters(); params.setTrustStore(trustStorePath, trustStorePassWord); TTransport transport = TSSLTransportFactory.getClientSocket(hostName, port, timeOut, params); TProtocol protocol = new TBinaryProtocol(transport); return new CloudGatewayService.Client(protocol); } catch (TTransportException e) { handleException("Could not initialize the Thrift client. " + e.getMessage(), e); } return null; } /** * Move elements between buffers. No need of additional synchronization locks, * BlockingQueue#drainTo is thread safe, but not atomic, which is not a problem. * See {@link BlockingQueue#drainTo(java.util.Collection, int)} * * @param src source buffer * @param dest destination buffer * @param blockSize blockSize of message bulk that need to move * @throws AxisFault in case of drains fails */ public static void moveElements(BlockingQueue<Message> src, List<Message> dest, final int blockSize) throws AxisFault { try { src.drainTo(dest, blockSize); } catch (Exception e) { throw new AxisFault(e.getMessage(), e); } } public static String getKeyStoreFilePath() { return CGUtils.getStringProperty(CGConstant.KEY_STORE_FILE_LOCATION, null) != null ? CGUtils.getStringProperty(CGConstant.KEY_STORE_FILE_LOCATION, null) : getWSO2KeyStoreFilePath(); } public static String getWSO2KeyStoreFilePath() { ServerConfiguration config = ServerConfiguration.getInstance(); return config.getFirstProperty(RegistryResources.SecurityManagement.SERVER_PRIMARY_KEYSTORE_FILE); } public static String getTrustStoreFilePath() { return CGUtils.getStringProperty(CGConstant.TRUST_STORE_FILE_LOCATION, null) != null ? CGUtils.getStringProperty(CGConstant.TRUST_STORE_FILE_LOCATION, null) : getWSO2TrustStoreFilePath(); } public static String getWSO2TrustStoreFilePath() { ServerConfiguration config = ServerConfiguration.getInstance(); return config.getFirstProperty("Security.TrustStore.Location"); } public static String getKeyStorePassWord() { return CGUtils.getStringProperty(CGConstant.KEY_STORE_PASSWORD, null) != null ? CGUtils.getStringProperty(CGConstant.KEY_STORE_PASSWORD, null) : getWSO2KeyStorePassword(); } public static String getWSO2KeyStorePassword() { ServerConfiguration config = ServerConfiguration.getInstance(); String password = config.getFirstProperty(RegistryResources.SecurityManagement.SERVER_PRIVATE_KEY_PASSWORD); if (password == null) { password = "wso2carbon"; } return password; } public static String getTrustStorePassWord() { return CGUtils.getStringProperty(CGConstant.TRUST_STORE_PASSWORD, null) != null ? CGUtils.getStringProperty(CGConstant.TRUST_STORE_PASSWORD, null) : getWSO2TrustStorePassword(); } public static String getWSO2TrustStorePassword() { ServerConfiguration config = ServerConfiguration.getInstance(); String password = config.getFirstProperty("Security.TrustStore.Password"); if (password == null) { password = "wso2carbon"; } return password; } public static void handleException(String msg, Throwable t) { log.error(msg, t); throw new RuntimeException(msg, t); } public static String getStringProperty(String name, String def) { String val = System.getProperty(name); return val == null ? (prop.get(name) == null ? def : (String) prop.get(name)) : val; } public static int getIntProperty(String name, int def) { String val = System.getProperty(name); return val == null ? (prop.get(name) == null ? def : Integer.parseInt((String) prop.get(name))) : Integer.parseInt(val); } public static long getLongProperty(String name, long def) { String val = System.getProperty(name); return val == null ? (prop.get(name) == null ? def : Long.parseLong((String) prop.get(name))) : Long.parseLong(val); } public static double getDoubleProperty(String name, double def) { String val = System.getProperty(name); return val == null ? (prop.get(name) == null ? def : Double.parseDouble((String) prop.get(name))) : Double.parseDouble(val); } public static Boolean getBooleanProperty(String name, boolean def) { String val = System.getProperty(name); return val == null ? (prop.get(name) == null ? def : Boolean.parseBoolean((String) prop.get(name))) : Boolean.parseBoolean(val); } public static String getQueueNameFromEPR(String targetEPR) { return targetEPR.substring(CGConstant.CG_TRANSPORT_PREFIX.length()); } public static String getFullUserName(String userName, String domainName) { return domainName == null || "".equals(domainName) ? userName : userName + "@" + domainName; } public static String getCSGServiceName(String serviceName, String userName) { // default will be; // test1@test1.org-SimpleStockQuoteService-Proxy // admin-SimpleStockQuoteService-Proxy userName = getStringProperty(CGConstant.CG_PROXY_PREFIX, userName); String delimiter = getStringProperty(CGConstant.CG_PROXY_DELIMITER, "-"); return userName + delimiter + serviceName; } public static String getCGEPR(String tenantName, String serverName, String serviceName) { // multi-tenant case -> cg://tenant-name/server-name/service-name // standalone case -> cg://server-name/service-name return CGConstant.CG_TRANSPORT_PREFIX + (tenantName != null ? tenantName + "/" : "") + serverName + "/" + serviceName; } public static String getCGThriftServerHostName() throws SocketException { String hostName = CGUtils.getStringProperty(CGConstant.THRIFT_SERVER_HOST_NAME, null); if (hostName == null) { hostName = NetworkUtils.getLocalHostname(); } return hostName; } public static int getCGThriftServerPort() { int port = CGUtils.getIntProperty(CGConstant.THRIFT_SERVER_PORT, -1); if (port == -1) { // user haven't provided any port via a system property ServerConfiguration config = ServerConfiguration.getInstance(); String portStr = config.getFirstProperty(CGConstant.CG_CARBON_PORT); if (!"".equals(portStr) && portStr != null) { try { port = Integer.parseInt(portStr); } catch (NumberFormatException e) { port = CGConstant.DEFAULT_PORT; } } else { port = CGConstant.DEFAULT_PORT; } } return port; } public static String getPortFromServerURL(String serverURL) { //https://localhost:9443/ or //https://localhost:9444 String socket = getSocketStringFromServerURL(serverURL); return socket.substring(socket.indexOf(':') + 1); } public static String getHostFromServerURL(String serverURL) { String socket = getSocketStringFromServerURL(serverURL); return socket.substring(0, socket.indexOf(':')); } public static String getUserNameFromTenantUserName(String tenantUserName) { return tenantUserName.contains("@") ? tenantUserName.substring(0, tenantUserName.indexOf('@')) : tenantUserName; } public static String getDomainNameFromTenantUserName(String tenantUserName) { return tenantUserName.contains("@") ? tenantUserName.substring(tenantUserName.indexOf('@') + 1) : null; } public static String getTryItURLFromWSDLURL(String wsdlURL) { //http://localhost:8280/services/SimpleStockQuoteService?wsdl -> //http://localhost:8280/services/SimpleStockQuoteService?tryit return wsdlURL.substring(0, wsdlURL.indexOf("?wsdl")) + "?tryit"; } private static String getSocketStringFromServerURL(String serverURL) { String socket = serverURL.substring("https://".length()); if (socket.contains("/")) { socket = socket.replace("/", ""); } return socket; } private static Properties loadProperties(String filePath) { Properties properties = new Properties(); ClassLoader cl = Thread.currentThread().getContextClassLoader(); if (log.isDebugEnabled()) { log.debug("Loading a file '" + filePath + "' from classpath"); } InputStream in = cl.getResourceAsStream(filePath); if (in == null) { if (log.isDebugEnabled()) { log.debug("Unable to load file ' " + filePath + " '"); } filePath = "repository/conf" + File.separatorChar + filePath; if (log.isDebugEnabled()) { log.debug("Loading a file '" + filePath + "' from classpath"); } in = cl.getResourceAsStream(filePath); if (in == null) { if (log.isDebugEnabled()) { log.debug("Unable to load file ' " + filePath + " '"); } } } if (in != null) { try { properties.load(in); } catch (IOException e) { String msg = "Error loading properties from a file at :" + filePath; log.error(msg, e); } } return properties; } public static String getContentType(Map<String, String> trpHeaders) { // Following constant seems to be incorrectly deprecated, see source, // org.apache.axis2.transport.http.HTTPConstants.CONTENT_TYPE return trpHeaders.get(HTTPConstants.CONTENT_TYPE); } public static String getPlainToken(String encryptedToken) throws CryptoException { CryptoUtil cryptoUtil = CryptoUtil.getDefaultCryptoUtil(); String token = ""; if (encryptedToken != null) { token = new String(cryptoUtil.base64DecodeAndDecrypt(encryptedToken)); } return token; } public static boolean isServerAlive(String host, int port) { Socket s = null; boolean isAlive = true; try { s = new Socket(host, port); } catch (IOException e) { isAlive = false; } finally { if (s != null) { try { s.close(); } catch (IOException e) { // ignore } } } return isAlive; } public static String[] getPermissionsList() { String[] permissionList; String permissionString = CGUtils.getStringProperty(CGConstant.CG_USER_PERMISSION_LIST, null); if (permissionString == null) { permissionList = CGConstant.CG_USER_DEFAULT_PERMISSION_LIST; } else { // permission string can be configured as a system property as // csg-user-permission-list=permission1,permission2,permission3 etc.. permissionList = new String[] {}; int i = 0; for (String permission : permissionString.split(",")) { permissionList[++i] = permission.trim(); } } return permissionList; } public static void dumpBytesAsString(ByteArrayOutputStream baos) { byte b[] = baos.toByteArray(); for (byte i : b) { System.out.print((char) i); } System.out.println(); } public static void dumpInputStreamAsString(InputStream is) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(is)); StringBuilder sb = new StringBuilder(); String line; while ((line = br.readLine()) != null) { sb.append(line); } System.out.println(sb.toString()); } public static void dumpStringMap(Map<String, String> map) { for (Map.Entry<String, String> entry : map.entrySet()) { System.out.println(entry.getKey() + "/" + entry.getValue()); } } }