org.apache.ignite.internal.processors.cache.FetchActiveTxOwnerTraceClosure Maven / Gradle / Ivy

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Java-based middleware for in-memory processing of big data in a distributed environment.

There is a newer version: 3.0.0-beta1

/*
 * 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.ignite.internal.processors.cache;

import org.apache.ignite.lang.IgniteCallable;

import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;

/**
 * Closure that is computed on near node to get the stack trace of active transaction owner thread.
 */
public class FetchActiveTxOwnerTraceClosure implements IgniteCallable {
    /** */
    private static final long serialVersionUID = 0L;

    /** */
    private static final StackTraceElement[] STACK_TRACE_ELEMENT_EMPTY = new StackTraceElement[0];

    /** */
    private final long txOwnerThreadId;

    /** */
    public FetchActiveTxOwnerTraceClosure(long txOwnerThreadId) {
        this.txOwnerThreadId = txOwnerThreadId;
    }

    /**
     * Builds the stack trace dump of the transaction owner thread
     *
     * @return stack trace dump string
     * @throws Exception If failed
     */
    @Override public String call() throws Exception {
        StringBuilder traceDump = new StringBuilder("Stack trace of the transaction owner thread:\n");

        for (StackTraceElement stackTraceElement : getStackTrace()) {
            traceDump.append(stackTraceElement.toString());
            traceDump.append("\n");
        }

        return traceDump.toString();
    }

    /**
     * Gets the stack trace of the transaction owner thread
     *
     * @return stack trace elements
     */
    private StackTraceElement[] getStackTrace() {
        ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();

        ThreadInfo threadInfo;

        try {
            threadInfo = threadMXBean.getThreadInfo(txOwnerThreadId, Integer.MAX_VALUE);
        }
        catch (SecurityException | IllegalArgumentException ignored) {
            threadInfo = null;
        }

        return threadInfo == null ? STACK_TRACE_ELEMENT_EMPTY : threadInfo.getStackTrace();
    }
}