Java tutorial
// Modified or written by Luca Marrocco for inclusion with airbrake. // Copyright (c) 2009 Luca Marrocco. // Licensed under the Apache License, Version 2.0 (the "License") package com.itelis.worker.dev.airbrake; import static com.itelis.worker.dev.airbrake.ValidBacktraces.*; import java.text.*; import java.util.*; import java.util.regex.*; public class Backtrace implements Iterable<String> { public static boolean isValidBacktrace(String string) { return string.matches("[^:]*:\\d+.*"); } public static boolean notValidBacktrace(String string) { return !isValidBacktrace(string); } private final List<String> backtrace = new LinkedList<String>(); private final List<String> ignoreRules = new LinkedList<String>(); private final List<String> filteredBacktrace = new LinkedList<String>(); protected Backtrace() { } public Backtrace(final List<String> backtrace) { this.backtrace.addAll(backtrace); ignore(); filter(); } public Backtrace(final Throwable throwable) { toBacktrace(throwable); ignore(".*" + Pattern.quote(messageIn(throwable)) + ".*"); ignore(); filter(); } private String causedBy(final Throwable throwable) { return MessageFormat.format("Caused by {0}", messageIn(throwable)); } protected void filter() { filter(backtrace); } private final List<String> filter(final List<String> backtrace) { final ListIterator<String> iterator = backtrace.listIterator(); while (iterator.hasNext()) { String string = iterator.next(); if (mustBeIgnored(string)) { continue; } if (notValidBacktrace(string)) { string = removeDobuleDot(string); } filteredBacktrace.add(string); } return filteredBacktrace; } protected void ignore() { ignoreEmptyCause(); } protected void ignore(final String ignoreRule) { ignoreRules.add(ignoreRule); } protected void ignoreJetty() { ignore(".*org.eclipse.jetty.*"); } protected void ignoreCocoon() { ignore(".*org.apache.cocoon.components.expression.*"); ignore(".*org.apache.cocoon.template.script.*"); ignore(".*org.apache.cocoon.template.instruction.*"); ignore(".*org.apache.cocoon.template.JXTemplateGenerator.*"); ignore(".*org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.*"); ignore(".*org.apache.cocoon.components.treeprocessor.*"); ignore(".*org.apache.cocoon.environment.ForwardRedirector.*"); ignore(".*org.apache.cocoon.components.flow.AbstractInterpreter.*"); ignore(".*org.apache.cocoon.components.flow.javascript.fom.FOM_JavaScriptInterpreter.*"); ignore(".*org.apache.cocoon.components.flow.javascript.fom.FOM_Cocoon.*"); ignore(".*org.apache.commons.jexl.util.introspection.*"); ignore(".*org.apache.commons.jexl.parser.ASTMethod.*"); ignore(".*org.apache.commons.jexl.parser.ASTReference.*"); ignore(".*org.apache.commons.jexl.ExpressionImpl.*"); ignore(".*org.apache.cocoon.template.expression.*"); ignore(".*org.apache.cocoon.Cocoon.*"); ignore(".*org.apache.cocoon.servlet.*"); } protected void ignoreEclipse() { ignore(".*org.eclipse.jdt.internal.junit4.runner.*"); ignore(".*org.eclipse.jdt.internal.junit.runner.*"); } private void ignoreEmptyCause() { ignore("^Caused by $"); } protected void ignoreJunit() { ignore(".*.*org.junit.internal.runners.*"); } protected void ignoreMortbayJetty() { ignore(".*org.mortbay.jetty.handler.ContextHandlerCollection.*"); ignore(".*org.mortbay.jetty.handler.ContextHandler.*"); ignore(".*org.mortbay.jetty.handler.HandlerCollection.*"); ignore(".*org.mortbay.jetty.handler.HandlerWrapper.*"); ignore(".*org.mortbay.jetty.HttpConnection.*"); ignore(".*org.mortbay.jetty.HttpParser.*"); ignore(".*org.mortbay.jetty.security.SecurityHandler.*"); ignore(".*org.mortbay.jetty.Server.*"); ignore(".*org.mortbay.jetty.servlet.ServletHandler.*"); ignore(".*org.mortbay.jetty.servlet.ServletHolder.*"); ignore(".*org.mortbay.jetty.servlet.SessionHandler.*"); ignore(".*org.mortbay.jetty.webapp.WebAppContext.*"); ignore(".*org.mortbay.io.nio.*"); ignore(".*org.mortbay.thread.*"); } protected void ignoreMozilla() { ignore(".*org.mozilla.javascript.FunctionObject.*"); ignore(".*org.mozilla.javascript.ScriptRuntime.*"); ignore(".*org.mozilla.javascript.continuations.*"); ignore(".*org.mozilla.javascript.ScriptRuntime.*"); ignore(".*org.mozilla.javascript.ScriptableObject.*"); ignore(".*org.mozilla.javascript.FunctionObject.*"); } protected void ignoreNoise() { ignore(".*inv1.invoke.*"); ignore(".*javax.servlet.http.HttpServlet.*"); ignore(".*sun.reflect.*"); ignore(".*java.lang.reflect.Method.*"); } protected void ignoreSpringSecurity() { ignore(".*org.springframework.security.context.HttpSessionContextIntegrationFilter.*"); ignore(".*org.springframework.security.intercept.web.FilterSecurityInterceptor.*"); ignore(".*org.springframework.security.providers.anonymous.AnonymousProcessingFilter.*"); ignore(".*org.springframework.security.ui.AbstractProcessingFilter.*"); ignore(".*org.springframework.security.ui.basicauth.BasicProcessingFilter.*"); ignore(".*org.springframework.security.ui.ExceptionTranslationFilter.*"); ignore(".*org.springframework.security.ui.logout.LogoutFilter.*"); ignore(".*org.springframework.security.ui.rememberme.RememberMeProcessingFilter.*"); ignore(".*org.springframework.security.ui.SessionFixationProtectionFilter.*"); ignore(".*org.springframework.security.ui.SpringSecurityFilter.*"); ignore(".*org.springframework.security.util.FilterChainProxy.*"); ignore(".*org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.*"); ignore(".*org.springframework.web.filter.DelegatingFilterProxy.*"); } public Iterator<String> iterator() { if (needToBeFiltered()) { filter(backtrace); } return filteredBacktrace.iterator(); } private String messageIn(final Throwable throwable) { String message = throwable.getMessage(); if (message == null) { message = throwable.getClass().getName(); } return message; } private boolean mustBeIgnored(final String string) { for (final String ignore : ignoreRules) { if (string.matches(ignore)) return true; } return false; } private boolean needToBeFiltered() { return filteredBacktrace.isEmpty(); } public Backtrace newBacktrace(final Throwable throwable) { return new Backtrace(throwable); } private String removeDobuleDot(final String string) { return string.replaceAll(":", ""); } private String toBacktrace(final StackTraceElement element) { return toBacktrace(element.getClassName(), element.getFileName(), element.getLineNumber(), element.getMethodName()); } protected String toBacktrace(final String className, final String fileName, final int lineNumber, final String methodName) { return new BacktraceLine(className, fileName, lineNumber, methodName).toString(); } private void toBacktrace(final Throwable throwable) { if (throwable == null) return; backtrace.add(causedBy(throwable)); for (final StackTraceElement element : throwable.getStackTrace()) { backtrace.add(toBacktrace(element)); } toBacktrace(throwable.getCause()); } @Override public String toString() { final StringBuilder stringBuilder = new StringBuilder(); for (final String string : filteredBacktrace) { stringBuilder.append(string).append("\n"); } return stringBuilder.toString(); } }