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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Handling Transactions ...
Microsoft Dynamics CRM (Archived)

Handling Transactions in plugin when interacting with another system

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Posted on by D365developer

I believe that if you have ever written a CRM plugin, you are aware of the event execution pipeline (https://msdn.microsoft.com/en-us/library/gg327941.aspx) and that the operation is run in transaction which means that if there will be any exception, the whole transaction will be rolled back. Pre-operation plugins and Post-Operation plugins are also run in transaction, so if there will be an exception raised by the plugin, changes will not be reflected in CRM.

However when the plugin is writing events to another system (like service bus, eventhub, kafka etc), this creates an issue, rollback happened in CRM database however the external systems have no way of knowing it. Is there a way to trigger a plugin (or custom code) on the commit or rollback of these transactions. So that it helps to send a compensation transaction to the external system?

When I decompiled the Microsoft.Crm.Core.dll I find CrmTransactionEventManager where we I see functionality to add PostCommitTransactionEventHandler, however not sure if we can utilize this as of now.

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  • D365developer Profile Picture
    D365developer on at
    RE: Handling Transactions in plugin when interacting with another system

    I am able to register a postcommit eventhandler and tested it with CRM 2016. It seems to be working.

    However as this is not officially supported, I may not go with this. However posting code here incase someone finds it useful.

    protected override void Execute(IPluginExecutionContext context)
            {
                ((PipelineExecutionContext)context).PlatformContext.Transaction.TryRegisterForPostCommitTransactionEvent(EventHandler(), context);
                ((PipelineExecutionContext)context).PlatformContext.Transaction.TryRegisterForRollbackTransactionEvent(RollbackEventHandler(), context);

           }

    private CrmTransactionEventManager.RollbackTransactionEventHandler RollbackEventHandler()
            {
                return (sender, args) =>
                {
                    LogContext.Log.Info("custom rollback handler");
                };
            }

            private CrmTransactionEventManager.PostCommitTransactionEventHandler EventHandler()
            {
                return (sender, args) =>
                {
                    LogContext.Log.Info("custom post commit handler");
                };
            }

  • Suggested answer
    Arun Vinoth Profile Picture
    Arun Vinoth 11,615 Moderator on at
    RE: Handling Transactions in plugin when interacting with another system

    Unfortunately, all the external integrations has to be handled from our side if any rollback needed or stop the external transaction, CRM platform cannot do anything about it. Any method like PostCommitTransactionEventHandler for platform specific operations (I don't see any documentation around this) cannot be repurposed for our need, this is highly unsupported.

    On a side note, I also need a better way to handle this.

    For time being, I am thinking about adding a flag in CRM record, on successful transaction - I can use that flag for external integration in timely fashion using ETL or Console app but definitely not inside Plugin or Workflow.

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