Chaining of service interceptors is important because it enables a modular, ordered, and maintainable way to handle multiple layers of custom logic within ArcGIS Enterprise. Instead of placing all interception logic into a single interceptor, chaining allows each interceptor to handle a specific responsibility and ensures that logic is executed in the correct sequence.
Key benefits of chaining include:
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Separation of Concerns
Each interceptor can focus on a single task — for example:
- Interceptor A: Authentication.
- Interceptor B: Audit logging.
- Interceptor C: Payload modification.
This leads to cleaner, reusable, and testable code.
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Controlled Execution Flow
The chaining order ensures that interceptors run in a predictable sequence. For example, an authentication interceptor should run before one that logs access or modifies the request payload.
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Flexibility in Configuration
Administrators can change the order of execution without modifying the interceptor code, just by updating the
chainingconfiguration via the ArcGIS Server Admin API or updating theOrder chainingelement in service interceptor project.Order -
Scalability for Complex Use Cases
In enterprise environments, different teams may develop different interceptors. Chaining allows these to be composed together systematically, supporting scalable customization across many services.
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Ease of Debugging and Maintenance
Isolating logic into separate interceptors makes it easier to troubleshoot and maintain—if one fails or behaves unexpectedly, it can be diagnosed independently without affecting the others.
Once multiple service interceptors are registered with ArcGIS Server, administrator can edit chaining order using ArcGIS Server admin API.