Java tutorial
/** * 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.stratos.logging.view.ui; import java.io.InputStream; import java.rmi.RemoteException; import javax.activation.DataHandler; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import org.apache.axis2.AxisFault; import org.apache.axis2.Constants; import org.apache.axis2.client.Options; import org.apache.axis2.client.ServiceClient; import org.apache.axis2.context.ConfigurationContext; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.stratos.manager.stub.ApplicationManagementServiceStub; import org.wso2.carbon.logging.view.stub.LogViewerLogViewerException; import org.wso2.carbon.logging.view.stub.LogViewerStub; import org.wso2.carbon.logging.view.stub.types.carbon.LogEvent; import org.wso2.carbon.logging.view.stub.types.carbon.PaginatedLogInfo; import org.wso2.carbon.logging.view.stub.types.carbon.PaginatedLogEvent; public class LogViewerClient { private static final Log log = LogFactory.getLog(LogViewerClient.class); public LogViewerStub stub; public ApplicationManagementServiceStub appMgtStub; public LogViewerClient(String cookie, String backendServerURL, ConfigurationContext configCtx) throws AxisFault { String serviceURL = backendServerURL + "LogViewer"; stub = new LogViewerStub(configCtx, serviceURL); ServiceClient client = stub._getServiceClient(); Options option = client.getOptions(); option.setManageSession(true); option.setProperty(org.apache.axis2.transport.http.HTTPConstants.COOKIE_STRING, cookie); option.setProperty(Constants.Configuration.ENABLE_MTOM, Constants.VALUE_TRUE); String appServiceURL = backendServerURL + "ApplicationManagementService"; appMgtStub = new ApplicationManagementServiceStub(configCtx, appServiceURL); ServiceClient appMgtClient = appMgtStub._getServiceClient(); Options appMgtClientOptions = appMgtClient.getOptions(); appMgtClientOptions.setManageSession(true); appMgtClientOptions.setProperty(org.apache.axis2.transport.http.HTTPConstants.COOKIE_STRING, cookie); appMgtClientOptions.setProperty(Constants.Configuration.ENABLE_MTOM, Constants.VALUE_TRUE); } public void cleaLogs() throws Exception { stub.clearLogs(); } public void downloadArchivedLogFiles(String logFile, HttpServletResponse response, String domain, String serverKey) throws Exception { try { logFile = logFile.replace(".gz", ""); ServletOutputStream outputStream = response.getOutputStream(); response.setContentType("application/txt"); response.setHeader("Content-Disposition", "attachment;filename=" + logFile.replaceAll("\\s", "_")); DataHandler data = stub.downloadArchivedLogFiles(logFile, domain, serverKey); InputStream fileToDownload = data.getInputStream(); int c; while ((c = fileToDownload.read()) != -1) { outputStream.write(c); } outputStream.flush(); outputStream.flush(); } catch (Exception e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public int getLineNumbers(String logFile) throws Exception { try { return stub.getLineNumbers(logFile); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public PaginatedLogInfo getPaginatedLogInfo(int pageNumber, String tenantDomain, String serviceName) throws Exception { try { return stub.getPaginatedLogInfo(pageNumber, tenantDomain, serviceName); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public LogEvent[] getLogs(String type, String keyword, String domain, String serverkey) throws Exception { if (type == null || type.equals("")) { type = "ALL"; } try { return stub.getLogs(type, keyword, domain, serverkey); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public LogEvent[] getApplicationLogs(String type, String keyword, String applicationName, String domain, String serverKey) throws Exception { if (type == null || type.equals("")) { type = "ALL"; } if (applicationName == null || applicationName.equals("")) { applicationName = "FIRST"; } try { return stub.getApplicationLogs(type, keyword, applicationName, domain, serverKey); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public String[] getLogLinesFromFile(String logFile, int maxLogs, int start, int end) throws Exception { try { return stub.getLogLinesFromFile(logFile, maxLogs, start, end); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public String[] getSubscribedCartridgeList() throws Exception { try { return appMgtStub.getSubscribedCartridgeAliases(); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public String[] getApplicationNames(String domain, String serverKey) throws LogViewerLogViewerException, RemoteException { try { return stub.getApplicationNames(domain, serverKey); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public int getNoOfLogEvents() throws Exception { try { return 20;// stub.getNoOfLogEvents(); } catch (Exception e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public String[] getServiceNames() throws RemoteException, LogViewerLogViewerException { try { return stub.getServiceNames(); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public boolean isFileAppenderConfiguredForST() throws RemoteException { try { return stub.isFileAppenderConfiguredForST(); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public PaginatedLogEvent getPaginatedLogEvents(int pageNumber, String type, String keyword, String domain, String serverKey) throws Exception { try { return stub.getPaginatedLogEvents(pageNumber, type, keyword, domain, serverKey); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public PaginatedLogEvent getPaginatedApplicationLogEvents(int pageNumber, String type, String keyword, String appName, String domain, String serverKey) throws Exception { try { return stub.getPaginatedApplicationLogEvents(pageNumber, type, keyword, appName, domain, serverKey); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public PaginatedLogInfo getLocalLogFiles(int pageNo, String domain, String serverKey) throws Exception { try { return stub.getLocalLogFiles(pageNo, domain, serverKey); } catch (Exception e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public boolean isLogEventReciverConfigured() throws RemoteException { try { return stub.isLogEventReciverConfigured(); } catch (RemoteException e) { String msg = "Error occurred while getting logger data. Backend service may be unavailable"; log.error(msg, e); throw e; } } public String getImageName(String type) { if (type.equals("INFO")) { return "images/information.gif"; } else if (type.equals("ERROR")) { return "images/error.png"; } else if (type.equals("WARN")) { return "images/warn.png"; } else if (type.equals("DEBUG")) { return "images/debug.png"; } else if (type.equals("TRACE")) { return "images/trace.png"; } else if (type.equals("FATAL")) { return "images/fatal.png"; } return ""; } public String[] getLogLevels() { return new String[] { "ALL", "FATAL", "ERROR", "WARN", "INFO", "DEBUG", "TRACE" }; } public boolean isManager() throws RemoteException { return stub.isManager(); } public boolean isValidTenant(String domain) throws RemoteException { return stub.isValidTenant(domain); } }