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// <copyright>
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
namespace System.ServiceModel.Activities
{
using System;
using System.Collections.Specialized;
using System.Configuration;
internal static class AppSettings
{
private static volatile bool settingsInitialized = false;
private static object appSettingsLock = new object();
// false [default] to NOT have InstanceKeys automatically disassociated by default, so that they stay around until the completion of the workflow.
// true to have InstanceKeys automatically dissociated by default. Doing this affects the extensibility point WorkflowInstance.OnDisassociateKeys.
// <add key="microsoft:WorkflowServices:DefaultAutomaticInstanceKeyDisassociation" value="true"/>
//
// NOTE - There is a similar setting in System.Activities because the changes affected by this are in both assemblies.
private static bool defaultAutomaticInstanceKeyDisassociation;
// The number of seconds to wait for non-protocol bookmarks if we receive a request, but the protocol bookmark for that Receive activity is not ready.
// Default = 60 (1 minute).
// A value of 0 implies that we should not wait at all and the "out of order" exception should be thrown, rather than the timeout exception.
// <add key="microsoft:WorkflowServices:FilterResumeTimeoutInSeconds" value="60"/>
private static int filterResumeTimeoutInSeconds;
internal static bool DefaultAutomaticInstanceKeyDisassociation
{
get
{
EnsureSettingsLoaded();
return defaultAutomaticInstanceKeyDisassociation;
}
}
internal static int FilterResumeTimeoutInSeconds
{
get
{
EnsureSettingsLoaded();
return filterResumeTimeoutInSeconds;
}
}
private static void EnsureSettingsLoaded()
{
if (!settingsInitialized)
{
lock (appSettingsLock)
{
if (!settingsInitialized)
{
NameValueCollection settings = null;
try
{
settings = ConfigurationManager.AppSettings;
}
finally
{
if (settings == null || !bool.TryParse(settings["microsoft:WorkflowServices:DefaultAutomaticInstanceKeyDisassociation"], out defaultAutomaticInstanceKeyDisassociation))
{
defaultAutomaticInstanceKeyDisassociation = false;
}
if (settings == null || !int.TryParse(settings["microsoft:WorkflowServices:FilterResumeTimeoutInSeconds"], out filterResumeTimeoutInSeconds) ||
(filterResumeTimeoutInSeconds < 0))
{
filterResumeTimeoutInSeconds = 60;
}
settingsInitialized = true;
}
}
}
}
}
}
}
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