private async Task ExecuteProcess(CancellationToken token)
{
while (true)
{
Job job = null;
try
{
_queue.JobsInQueue.Wait(token);
if (!_queue.TryGetJob(out job))
{
continue;
}
_queue.ExecuteJob(job, token);
await Delay(_executePeriod, token).ConfigureAwait(false);
}
catch (JobAttemptException exception)
{
_logger?.Warning(exception.Message);
_logger?.Error(exception.InnerException);
if (job is null)
{
return;
}
await Delay(job.Attempt.Period, token).ConfigureAwait(false);
_queue.JobUnWork(job);
}
catch (JobExecutionException exception)
{
_logger?.Error(exception);
_queue.ArchiveJob(job);
await Delay(_executePeriod, token).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
_logger?.Information($"Worker {_id} has canceled.");
break;
}
catch (Exception exception)
{
_logger?.Error(exception);
await Delay(_executePeriod, token).ConfigureAwait(false);
}
}
}
private async Task RemoveOldJobsProcess(CancellationToken token)
{
while (true)
{
try
{
await Task.Delay(_options.CleaningInMemoryStoragePeriod, token).ConfigureAwait(false);
lock (_locker)
{
var jobs = _jobs.Where(x => x.IsArchived && DateTime.Now - x.Job.CreationTimestamp > _options.MaximumInMemoryStorageTime).ToArray();
foreach (var job in jobs)
{
_jobs.Remove(job);
}
_logger?.Debug($"Removed {jobs.Length} jobs from queue {Name}.");
}
}
catch (OperationCanceledException)
{
break;
}
catch (Exception exception)
{
_logger?.Error(exception);
}
}
}
private static void ReadRepositoryProcess(CancellationToken token)
{
while (true)
{
try
{
var jobs = _repository.Get();
DistributeOnQueues(jobs);
ClearRepository(jobs);
_logger?.Verbose("Read jobs from the repository.");
Task.Delay(_options.PollingPeriod, token).Wait(token);
}
catch (OperationCanceledException)
{
_logger?.Information("Scheduler read repository process has stopped.");
break;
}
catch (Exception exception)
{
_logger?.Error(exception);
}
}
}
/// <inheritdoc />
public TJob Get <TJob>(string jobName) where TJob : Job
{
if (string.IsNullOrWhiteSpace(jobName))
{
throw new ArgumentException("Value cannot be null or whitespace.", nameof(jobName));
}
try
{
using (var db = new LiteDatabase(_connectionString))
{
var fullName = typeof(TJob).FullName;
if (fullName == null)
{
return(null);
}
var collection = db.GetCollection <TJob>(fullName.Replace(".", "_"));
return(collection.FindOne(x => x.JobName == jobName));
}
}
catch (Exception exception)
{
_logger?.Error(exception);
throw;
}
}
private void Init(string path)
{
try
{
var directory = Directory.GetParent(path);
if (!directory.Exists)
{
directory.Create();
}
if (File.Exists(path))
{
return;
}
var executeString =
@"CREATE TABLE Jobs
(
Id INTEGER PRIMARY KEY AUTOINCREMENT,
JobName VARCHAR(100) NOT NULL,
JobType VARCHAR(100) NOT NULL,
Data VARCHAR(10240) NOT NULL
);
CREATE INDEX jobName_index ON Jobs (
JobName
);";
using (var cn = new SQLiteConnection(ConnectionString))
{
cn.Open();
cn.Execute(executeString);
}
}
catch (Exception exception)
{
_logger?.Error(exception);
throw;
}
}
public async Task Execute(IJobExecutionContext context)
{
var jobId = context.JobDetail.JobDataMap["id"];
Logger.JobId = jobId == null ? Guid.Empty : Guid.Parse(jobId.ToString());
await Logger.Info("任务开始");
try
{
await Execute(new JobTaskContext
{
JobId = Logger.JobId,
JobExecutionContext = context
});
}
catch (Exception ex)
{
await Logger.Error("任务异常：" + ex);
}
await Logger.Info("任务结束");
}