86 lines
3.4 KiB
Java
86 lines
3.4 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.tomcat.dbcp.pool2.impl;
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import java.security.AccessControlException;
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/**
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* Utility methods for {@link CallStack}.
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*
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* @since 2.4.3
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*/
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public final class CallStackUtils {
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/**
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* Returns whether the caller can create a security manager in the current environment.
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*
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* @return {@code true} if it is able to create a security manager in the current environment, {@code false}
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* otherwise.
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*/
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private static boolean canCreateSecurityManager() {
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final SecurityManager manager = System.getSecurityManager();
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if (manager == null) {
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return true;
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}
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try {
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manager.checkPermission(new RuntimePermission("createSecurityManager"));
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return true;
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} catch (final AccessControlException ignored) {
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return false;
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}
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}
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/**
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* Constructs a new {@link CallStack} using the fastest allowed strategy.
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*
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* @param messageFormat message (or format) to print first in stack traces
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* @param useTimestamp if true, interpret message as a SimpleDateFormat and print the created timestamp; otherwise,
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* print message format literally
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* @return a new CallStack
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* @deprecated use {@link #newCallStack(String, boolean, boolean)}
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*/
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@Deprecated
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public static CallStack newCallStack(final String messageFormat, final boolean useTimestamp) {
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return newCallStack(messageFormat, useTimestamp, false);
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}
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/**
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* Constructs a new {@link CallStack} using the fasted allowed strategy.
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*
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* @param messageFormat message (or format) to print first in stack traces
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* @param useTimestamp if true, interpret message as a SimpleDateFormat and print the created timestamp;
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* otherwise, print message format literally
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* @param requireFullStackTrace if true, forces the use of a stack walking mechanism that includes full stack trace
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* information; otherwise, uses a faster implementation if possible
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* @return a new CallStack
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* @since 2.5
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*/
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public static CallStack newCallStack(final String messageFormat,
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final boolean useTimestamp,
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final boolean requireFullStackTrace) {
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return canCreateSecurityManager() && !requireFullStackTrace
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? new SecurityManagerCallStack(messageFormat, useTimestamp)
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: new ThrowableCallStack(messageFormat, useTimestamp);
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}
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/**
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* Hidden constructor.
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*/
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private CallStackUtils() {
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}
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}
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