Android Open Source - robo-remote Event Manager

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License

The source code is released under:
Copyright (c) 2012, 2013, 2014, Groupon, Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provi...
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Java Source Code

/*
        Copyright (c) 2012, 2013, 2014, Groupon, Inc.
        All rights reserved.//  w  ww.ja  v  a  2  s  . com

        Redistribution and use in source and binary forms, with or without
        modification, are permitted provided that the following conditions
        are met:

        Redistributions of source code must retain the above copyright notice,
        this list of conditions and the following disclaimer.

        Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.

        Neither the name of GROUPON nor the names of its contributors may be
        used to endorse or promote products derived from this software without
        specific prior written permission.

        THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
        IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
        PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
        HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
        SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
        TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
        PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
        LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
        NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
        SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.groupon.roboremote.roboremoteclientcommon.logging;

import com.android.ddmlib.MultiLineReceiver;
import com.groupon.roboremote.roboremoteclientcommon.DebugBridge;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.Arrays;
import java.io.*;

public class EventManager {
    public static final Logger logger = LoggerFactory.getLogger(EventManager.class);

    private ArrayList<String> args = null;
    private long startTime;
    private long lastEventTime;

    InputStream is = null;
    InputStreamReader isr = null;
    BufferedReader br = null;

    ArrayList<LogEvent> events = new ArrayList<LogEvent>();
    ArrayList<String> logLines = new ArrayList<String>();

    private LogThread loggerThread = null;

    public EventManager() throws Exception {
        args = new ArrayList<String>(Arrays.asList("-v", "time"));

        try {
            // start logcat
            startADB();
            gatherEvents();
            setCheckPoint();
        } catch (Exception e) {
            throw new Exception("Could not start event manager");
        }
    }

    public void setCheckPoint() throws Exception
    {
        gatherEvents();
        startTime = lastEventTime;

        // clear events list
        events.clear();

        TestLogger.get().info("Set checkpoint!");
    }

    public void startADB() throws Exception {
        startLogListener();

        Thread.sleep(1000);
    }

    /**
     * closes the file stream/adb
     */
    public void close() throws Exception{
        is = null;
        isr = null;
        br = null;

        stopLogListener();
    }

    public LogEvent checkEvent(String filter) throws Exception {
        ArrayList<LogEvent> events = gatherEvents();

        for(LogEvent event: events){
            if(event.checkMsgSubstring(filter)){
                return event;
            }
        }

        return null;
    }

    public LogEvent waitForEvent(String filter, int timeout) throws Exception
    {
        return waitForEvent(filter, timeout, true);
    }

    public LogEvent waitForEvent(String filter, int timeout, boolean removeEvent) throws Exception
    {
        TestLogger.get().info(String.format("Waiting for event: %s...", filter.substring(0, filter.length()-1)));
        int retries = timeout/1000 == 0 ? 1 : timeout/1000;
        for(int i = 0; i < retries; i++)
        {
            LogEvent event = checkEvent(filter);
            if(event != null){
                TestLogger.get().info(String.format("Found event: %s", filter.substring(0, filter.length()-1)));

                if (removeEvent)
                    events.remove(event);

                return event;
            }
            Thread.sleep(1000);
        }
        return null;
    }

    public ArrayList<LogEvent> getEvents() {
        return gatherEvents();
    }

    public void clearEvents() throws Exception{
        events.clear();
    }

    protected ArrayList<LogEvent> gatherEvents() {
        final StringBuilder log = new StringBuilder();

        try {
            synchronized (logLines) {
                for (String line: logLines) {
                    // Add events to the events arraylist if they occur after the LogCollector has started to run
                    LogEvent event = new LogEvent(line);

                    if (event.peekTimeMS() > 0)
                        lastEventTime = event.peekTimeMS();

                    if(event.peekTimeMS() > startTime)
                    {
                        events.add(event);
                    }
                }

                // clear the queue
                logLines.clear();
            }
        } catch (Exception e) {
            TestLogger.get().error(String.format("gatherEvents doInBackground failed: %s", e.toString()));
        }

        return events;
    }

    public void startLogListener() throws Exception {
        if (loggerThread == null) {
            loggerThread = new LogThread();
            loggerThread.start();
        }
    }

    public void stopLogListener() throws Exception {
        if (loggerThread != null) {
            loggerThread.close();
            loggerThread.interrupt();
        }

        loggerThread = null;
    }

    /**
     * This is the multi line receiver for the log listener
     * It stores lines in an arraylist that are consumed by the event manager
     */
    public class MultiReceiver extends MultiLineReceiver {
        boolean closed = false;

        public MultiReceiver() {

        }

        public void processNewLines(java.lang.String[] lines) {
            try {
                synchronized (logLines) {
                    for(String line : lines) {
                        logLines.add(line);
                    }
                }
            } catch (Exception e) {

            }
        }

        public boolean isCancelled() {
            return closed;
        }

        public void close() {
            closed = true;
        }
    }

    /**
     * This thread contains the running the log listener
     * DebugBridge does not return until the logcat finishes(never) so we have to run it in its own thread
     */
    private class LogThread extends Thread {
        MultiReceiver _receiver = null;

        public LogThread() {
        }

        public void run() {
            try {
                _receiver = new MultiReceiver();
                DebugBridge.get().runShellCommand("logcat -c");
                DebugBridge.get().runShellCommand("logcat -v time", _receiver, 0);
            } catch (Exception e) {
                logger.error("LogThread interrupted: {}", e);
            }

            logger.info("LogThread exited");
        }

        public void close() {
            // cause an exception in the receiver to kill the command
            _receiver.close();
        }
    }
}
Java Source Code List
