AMQP message annotations can provide further information about the server event and allows for event filtering without having to deserialize the payload, as follows:
Reply-To: The URL of the server that sent the event message.
Message-ID: The unique identifier (UID) of the event message.
Content-Type: The content type of the payload.
Subject: The information about the event which allows the subscriber to evaluate whether the event is of interest or not:
|
Component |
Description |
|
Subject component 1 |
The product. For example, SDX |
|
Subject component 2 |
The server name. For example, SPFServer |
|
Subject component 3 |
The event type. For example, OnCreated |
|
Subject component 4 and so on |
A value that depends on the value type. For example, PL_PlantA/SPFFolder/IObject,ISPFFolder |
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The components of the subject value are separated by a forward slash /.
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The first three components are always the same regardless of the event type.
Object Event Subject Definition:
The Object Event Subject Definition is made up of the following:
Product/ServerName/EventType/ConfigUID/ClassDefUID/InterfaceDefUIDs
For example, this results on the following Subject Definition:
SDX/SDXServer/OnCreated/PL_PlantA/SPFFolder/IObject,ISPFFolder
Object Update Event Subject Definition:
The Object Event Subject Definition is made up of the following:
Product/ServerName/EventType/ConfigUID/ClassDefUID/InterfaceDefUIDs/UpdatedProperties
For example, this results on the following Subject Definition:
SDX/SDXServer/OnUpdated/PL_APIPlantA/SPFFolder/ISPFFTRItem,ISPFExportableItem,ISPFSubscribableItem,ISPFOwnedObj,ISPFWorkflowItem,ISPFFolder,ISPFSupportItem,IObject/IObject|LastUpdatedDate,IObject|Description
Relationship Event Subject Definition:
The Object Event Subject Definition is made up of the following:
Product/ServerName/EventType/ConfigUID/RelDefUID/InterfaceDefUIDs
Relationship Update Event Subject Definition:
The Object Event Subject Definition is made up of the following:
Product/ServerName/EventType/ConfigUID/RelDefUID/InterfaceDefUIDs/UpdatedProperties
Custom Process Step Event Subject Definition:
The Custom Process Step Event Subject Definition is made up of the following:
Product/ServerName/EventType/ConfigUID/ WorkflowStepClassName
For example, this results in the following Subject Definition:
SDX/SDXServer/Execute/PL_PlantA/ExampleProcessStepClassName
Change Action Event Subject Definition:
The change action event subject definition is made of the following:
Product/ServerName/EventType/ToolSignature/ConfigUID
For example,
SDx/SDXServer/OnChangeActionUpdated/AAAD/PR_DEMOPROJ2