124 lines
4.7 KiB
C#
124 lines
4.7 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="DefaultWorkflowTransactionService.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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using System;
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using System.Transactions;
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using System.Collections.Specialized;
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using System.Diagnostics;
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using System.Configuration;
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namespace System.Workflow.Runtime.Hosting
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{
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/// <summary> A simple TransactionService that creates
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/// <c>System.Transactions.CommittableTransaction</c>.</summary>
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[Obsolete("The System.Workflow.* types are deprecated. Instead, please use the new types from System.Activities.*")]
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public class DefaultWorkflowCommitWorkBatchService : WorkflowCommitWorkBatchService
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{
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private bool _enableRetries = false;
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private bool _ignoreCommonEnableRetries = false;
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public DefaultWorkflowCommitWorkBatchService()
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{
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}
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public DefaultWorkflowCommitWorkBatchService(NameValueCollection parameters)
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{
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if (parameters == null)
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throw new ArgumentNullException("parameters", ExecutionStringManager.MissingParameters);
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if (parameters.Count > 0)
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{
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foreach (string key in parameters.Keys)
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{
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if (0 == string.Compare("EnableRetries", key, StringComparison.OrdinalIgnoreCase))
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{
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_enableRetries = bool.Parse(parameters[key]);
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_ignoreCommonEnableRetries = true;
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}
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}
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}
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}
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public bool EnableRetries
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{
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get { return _enableRetries; }
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set
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{
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_enableRetries = value;
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_ignoreCommonEnableRetries = true;
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}
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}
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protected internal override void Start()
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{
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WorkflowTrace.Host.TraceEvent(TraceEventType.Information, 0, "DefaultWorkflowCommitWorkBatchService: Starting");
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//
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// If we didn't find a local value for enable retries
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// check in the common section
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if ((!_ignoreCommonEnableRetries) && (null != base.Runtime))
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{
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NameValueConfigurationCollection commonConfigurationParameters = base.Runtime.CommonParameters;
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if (commonConfigurationParameters != null)
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{
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// Then scan for connection string in the common configuration parameters section
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foreach (string key in commonConfigurationParameters.AllKeys)
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{
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if (string.Compare("EnableRetries", key, StringComparison.OrdinalIgnoreCase) == 0)
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{
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_enableRetries = bool.Parse(commonConfigurationParameters[key].Value);
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break;
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}
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}
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}
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}
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base.Start();
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}
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protected override void OnStopped()
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{
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WorkflowTrace.Host.TraceEvent(TraceEventType.Information, 0, "DefaultWorkflowCommitWorkBatchService: Stopping");
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base.OnStopped();
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}
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internal protected override void CommitWorkBatch(CommitWorkBatchCallback commitWorkBatchCallback)
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{
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DbRetry dbRetry = new DbRetry(_enableRetries);
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short retryCounter = 0;
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while (true)
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{
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if (null != Transaction.Current)
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{
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//
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// Can't retry as we don't own the tx
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// Set the counter to only allow one iteration
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retryCounter = dbRetry.MaxRetries;
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}
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try
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{
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base.CommitWorkBatch(commitWorkBatchCallback);
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break;
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}
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catch (Exception e)
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{
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WorkflowTrace.Host.TraceEvent(TraceEventType.Error, 0, "DefaultWorkflowCommitWorkBatchService caught exception from commitWorkBatchCallback: " + e.ToString());
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if (dbRetry.TryDoRetry(ref retryCounter))
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{
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WorkflowTrace.Host.TraceEvent(TraceEventType.Information, 0, "DefaultWorkflowCommitWorkBatchService retrying commitWorkBatchCallback (retry attempt " + retryCounter.ToString(System.Globalization.CultureInfo.InvariantCulture) + ")");
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continue;
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}
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else
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throw;
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}
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}
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}
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}
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}
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