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TriggeredJobRunner.cs
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TriggeredJobRunner.cs
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using System;
using System.Diagnostics;
using System.IO;
using System.Threading;
using Kudu.Contracts.Jobs;
using Kudu.Contracts.Settings;
using Kudu.Core.Hooks;
using Kudu.Core.Infrastructure;
using Kudu.Core.Tracing;
namespace Kudu.Core.Jobs
{
public class TriggeredJobRunner : BaseJobRunner, IDisposable
{
private ManualResetEvent _currentRunningJobWaitHandle;
private readonly LockFile _lockFile;
public TriggeredJobRunner(string jobName, string basePath, IEnvironment environment, IDeploymentSettingsManager settings, ITraceFactory traceFactory, IAnalytics analytics)
: base(jobName, Constants.TriggeredPath, basePath, environment, settings, traceFactory, analytics)
{
_lockFile = BuildTriggeredJobRunnerLockFile(JobDataPath, TraceFactory);
}
public WaitHandle CurrentRunningJobWaitHandle
{
get { return _currentRunningJobWaitHandle; }
}
public static LockFile BuildTriggeredJobRunnerLockFile(string jobDataPath, ITraceFactory traceFactory)
{
return new LockFile(Path.Combine(jobDataPath, "triggeredJob.lock"), traceFactory, ensureLock: true);
}
protected override string JobEnvironmentKeyPrefix
{
get { return "WEBSITE_TRIGGERED_JOB_RUNNING_"; }
}
protected override TimeSpan IdleTimeout
{
get { return Settings.GetWebJobsIdleTimeout(); }
}
public string StartJobRun(TriggeredJob triggeredJob, JobSettings jobSettings, string trigger, Action<string, string> reportAction)
{
JobSettings = jobSettings;
if (Settings.IsWebJobsStopped())
{
throw new WebJobsStoppedException();
}
if (!_lockFile.Lock(String.Format("Starting {0} triggered WebJob", triggeredJob.Name)))
{
throw new ConflictException();
}
TriggeredJobRunLogger logger = TriggeredJobRunLogger.LogNewRun(triggeredJob, trigger, Environment, TraceFactory, Settings);
Debug.Assert(logger != null);
try
{
if (_currentRunningJobWaitHandle != null)
{
_currentRunningJobWaitHandle.Dispose();
_currentRunningJobWaitHandle = null;
}
_currentRunningJobWaitHandle = new ManualResetEvent(false);
var tracer = TraceFactory.GetTracer();
var step = tracer.Step("Run {0} {1}", triggeredJob.JobType, triggeredJob.Name);
ThreadPool.QueueUserWorkItem(_ =>
{
try
{
InitializeJobInstance(triggeredJob, logger);
RunJobInstance(triggeredJob, logger, logger.Id, trigger, tracer);
}
catch (Exception ex)
{
logger.LogError("WebJob run failed due to: " + ex);
}
finally
{
_lockFile.Release();
logger.ReportEndRun();
step.Dispose();
reportAction(triggeredJob.Name, logger.Id);
_currentRunningJobWaitHandle.Set();
}
});
}
catch (Exception ex)
{
logger.LogError("Failed to start job due to: " + ex);
_lockFile.Release();
throw;
}
// Return the run ID
return logger.Id;
}
protected override string RefreshShutdownNotificationFilePath(string jobName, string jobsTypePath)
{
// Since we don't use the shutdown notification file for triggered WebJobs we return null
return null;
}
protected override void UpdateStatus(IJobLogger logger, string status)
{
((TriggeredJobRunLogger)logger).ReportStatus(status);
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (_currentRunningJobWaitHandle != null)
{
_currentRunningJobWaitHandle.Dispose();
_currentRunningJobWaitHandle = null;
}
}
}
}
}