Java tutorial
/* This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV This program is free software; you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program; if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 */ package com.servoy.j2db.util; import org.mozilla.javascript.Context; import org.mozilla.javascript.EcmaError; import org.mozilla.javascript.ScriptRuntime; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.slf4j.MDC; import com.servoy.base.util.ILogger; import com.servoy.j2db.IServiceProvider; import com.servoy.j2db.J2DBGlobals; import com.servoy.j2db.persistence.Solution; public class Debug { public static final ILogger LOGGER = new ILogger() { public void log(String message) { Debug.log(message); } public void error(String message, Throwable t) { Debug.error(message, t); } }; private volatile static Logger log = null; private volatile static boolean trace = false; private volatile static boolean traceClient = false; static { try { // touch the LogFactory class in the init. (to avoid the webstart bug) Class<?> cls = LoggerFactory.class; if (cls != null) cls.getName(); } catch (Throwable t) { } } @SuppressWarnings("nls") public static void init() { try { System.setProperty("org.apache.commons.logging.simplelog.showdatetime", "true"); System.setProperty("org.apache.commons.logging.simplelog.dateTimeFormat", "yyyy-MM-dd HH:mm"); System.setProperty("org.apache.commons.logging.simplelog.defaultlog", "warn"); boolean st = false; try { st = Boolean.getBoolean("STACKTRACE"); //$NON-NLS-1$ } catch (Exception ex) { //ignore } boolean STACKTRACE = st; if (STACKTRACE) System.setProperty("org.apache.commons.logging.simplelog.defaultlog", "info"); boolean t = false; try { if (STACKTRACE) { t = true; } else { t = Boolean.getBoolean("TRACE"); //$NON-NLS-1$ } } catch (Exception ex) { //ignore } boolean TRACE = t; if (TRACE) System.setProperty("org.apache.commons.logging.simplelog.defaultlog", "trace"); log = LoggerFactory.getLogger(Debug.class); trace = log.isTraceEnabled(); } catch (Throwable t) { System.err.println("Error initializing Debug log class"); t.printStackTrace(); } } public static void toggleTracing() { if (log == null) { init(); } trace = !trace; traceClient = trace; if (traceClient) { log("tracing enabled"); //$NON-NLS-1$ } else { log("tracing disabled"); //$NON-NLS-1$ } } private static Boolean HASMDC = null; @SuppressWarnings("nls") private static boolean insertClientInfo(boolean insert) { if (HASMDC == null) { try { Class.forName("org.slf4j.MDC"); HASMDC = Boolean.TRUE; } catch (Exception e) { HASMDC = Boolean.FALSE; } } if (!HASMDC.booleanValue()) return false; return insetClientInfoWithMDC(insert); } /** * @param message * @return */ @SuppressWarnings("nls") private static boolean insetClientInfoWithMDC(boolean insert) { IServiceProvider serviceProvider = J2DBGlobals.getServiceProvider(); if (insert && serviceProvider != null) { Solution solution = serviceProvider.getSolution(); String clientID = serviceProvider.getClientID(); if (solution != null && clientID != null) { if (MDC.get("clientid") == null) { MDC.put("clientid", clientID); MDC.put("solution", solution.getName()); return true; } } else { MDC.remove("clientid"); MDC.remove("solution"); } } else { MDC.remove("clientid"); MDC.remove("solution"); } return false; } public static void trace(String message, Throwable throwable) { if (log == null) return; if (traceClient) { // if trace is enable on client (trace boolean is runtime toggle) // then do log instead of trace, because the default // jre logging.properties only does INFO. log(message, throwable); } else { boolean wasInserted = insertClientInfo(true); log.trace(message, throwable); if (wasInserted) insertClientInfo(false); } } public static void trace(Object s) { if (log == null) return; if (traceClient) { // if trace is enable on client (trace boolean is runtime toggle) // then do log instead of trace, because the default // jre logging.properties only does INFO. log(s); } else { if (s instanceof Throwable) { boolean wasInserted = insertClientInfo(true); log.trace("Throwable", (Throwable) s); if (wasInserted) insertClientInfo(false); } else { boolean wasInserted = insertClientInfo(true); log.trace(String.valueOf(s)); if (wasInserted) insertClientInfo(false); } } // if (TRACE) // { // System.out.println(s); // if(STACKTRACE && (s instanceof Throwable )) // { // ((Throwable)s).printStackTrace(); // logStackTraceToWindow((Throwable) s); // } // else if(s != null && !"".equals(s)) // { // logToWindow(s, TRACE_LEVEL); // } // System.out.flush(); // // if (LOG && logFile != null && s != null && !"".equals(s)) // { // logFile.print(sdf.format(new Date())); // logFile.print(" : "); // if(s instanceof Throwable ) // { // ((Throwable)s).printStackTrace(logFile); // } // else // { // logFile.println(s); // } // logFile.flush(); // } // } } public static void error(String message, Throwable s) { initIfFirstTime(); if (log == null) return; boolean wasInserted = insertClientInfo(true); log.error(message, s); if (wasInserted) insertClientInfo(false); if (Context.getCurrentContext() != null) { try { EcmaError jsError = ScriptRuntime.constructError(message, message); String scriptStackTrace = jsError.getScriptStackTrace(); if (!scriptStackTrace.equals("")) { wasInserted = insertClientInfo(true); log.error(message + ", script stacktrace:\n" + scriptStackTrace); if (wasInserted) insertClientInfo(false); } } catch (Exception e) { // just ignore } } } public static void error(Object s) { initIfFirstTime(); if (log == null) return; if (s instanceof Throwable) { error("Throwable", (Throwable) s); } else { boolean wasInserted = insertClientInfo(true); log.error(String.valueOf(s)); if (wasInserted) insertClientInfo(false); } } public static void log(String message, Throwable throwable) { if (log == null) return; if (throwable != null) { boolean wasInserted = insertClientInfo(true); log.warn(message, throwable); if (wasInserted) insertClientInfo(false); } else { boolean wasInserted = insertClientInfo(true); log.info(message); if (wasInserted) insertClientInfo(false); } } public static void log(Object s) { if (log == null) return; if (s instanceof Throwable) { boolean wasInserted = insertClientInfo(true); log.warn("Throwable", (Throwable) s); if (wasInserted) insertClientInfo(false); } else { boolean wasInserted = insertClientInfo(true); log.info(String.valueOf(s)); if (wasInserted) insertClientInfo(false); } } public static boolean tracing() { return trace; } public static void warn(Object s) { initIfFirstTime(); if (log == null) return; boolean wasInserted = insertClientInfo(true); log.warn(String.valueOf(s)); if (wasInserted) insertClientInfo(false); } public static void fatal(Object s) { initIfFirstTime(); if (log == null) return; boolean wasInserted = insertClientInfo(true); log.error(String.valueOf(s)); if (wasInserted) insertClientInfo(false); } public static void debug(Object s) { initIfFirstTime(); if (log == null) return; boolean wasInserted = insertClientInfo(true); log.debug(String.valueOf(s)); if (wasInserted) insertClientInfo(false); } private static void initIfFirstTime() { if (log == null) { init(); } } }