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EnqueuedState.cs
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EnqueuedState.cs
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// This file is part of Hangfire.
// Copyright © 2013-2014 Sergey Odinokov.
//
// Hangfire is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3
// of the License, or any later version.
//
// Hangfire is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with Hangfire. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using Hangfire.Common;
using Hangfire.Storage;
namespace Hangfire.States
{
public class EnqueuedState : IState
{
public const string DefaultQueue = "default";
public static readonly string StateName = "Enqueued";
private string _queue;
public EnqueuedState()
: this(DefaultQueue)
{
}
public EnqueuedState(string queue)
{
EnqueuedAt = DateTime.UtcNow;
Queue = queue;
}
public string Queue
{
get { return _queue; }
set
{
if (String.IsNullOrWhiteSpace(value))
{
throw new ArgumentNullException("value");
}
if (!Regex.IsMatch(value, @"^[a-z0-9_]+$"))
{
throw new ArgumentException(
String.Format(
"The queue name must consist of lowercase letters, digits and underscore characters only. Given: '{0}'.", value),
"value");
}
_queue = value;
}
}
public DateTime EnqueuedAt { get; set; }
public string Name { get { return StateName; } }
public string Reason { get; set; }
public bool IsFinal { get { return false; } }
public bool IgnoreJobLoadException { get { return false; } }
public Dictionary<string, string> SerializeData()
{
return new Dictionary<string, string>
{
{ "EnqueuedAt", JobHelper.SerializeDateTime(EnqueuedAt) },
{ "Queue", Queue }
};
}
internal class Handler : IStateHandler
{
public void Apply(ApplyStateContext context, IWriteOnlyTransaction transaction)
{
var enqueuedState = context.NewState as EnqueuedState;
if (enqueuedState == null)
{
throw new InvalidOperationException(String.Format(
"`{0}` state handler can be registered only for the Enqueued state.",
typeof(Handler).FullName));
}
transaction.AddToQueue(enqueuedState.Queue, context.JobId);
}
public void Unapply(ApplyStateContext context, IWriteOnlyTransaction transaction)
{
}
public string StateName
{
get { return EnqueuedState.StateName; }
}
}
}
}