specs, LRO, use pollingOperation to customize non-standard LRO

.changeset/popular-tables-yawn.md

@@ -0,0 +1,5 @@
+---
+"@azure-tools/cadl-ranch-specs": patch
+---
+
+Use pollingOperation to customize non-standard LRO

packages/cadl-ranch-specs/cadl-ranch-summary.md

@@ -359,7 +359,9 @@ Expected response body:
 
 ### Azure_Core_Lro_Rpc_Legacy_CreateResourcePollViaOperationLocation
 
-- Endpoint: `post /azure/core/lro/rpc/legacy/create-resource-poll-via-operation-location/jobs`
+- Endpoints:
+  - `get /azure/core/lro/rpc/legacy/create-resource-poll-via-operation-location`
+  - `get /azure/core/lro/rpc/legacy/create-resource-poll-via-operation-location/jobs`
 
 POST to create resource.
 Poll URL via operation-location header in response.

packages/cadl-ranch-specs/http/azure/core/lro/rpc-legacy/main.tsp

@@ -2,7 +2,6 @@ import "@azure-tools/typespec-azure-core";
 import "@azure-tools/cadl-ranch-expect";
 import "@typespec/rest";
 import "@typespec/versioning";
-import "./util.tsp";
 
 using TypeSpec.Rest;
 using TypeSpec.Http;
@@ -138,10 +137,12 @@ Expected response body:
 """)
 @route("/create-resource-poll-via-operation-location")
 interface CreateResourcePollViaOperationLocation {
+  @doc("Poll a Job")
+  getJob is ResourceOperations.ResourceRead<JobResult>;
+
   #suppress "@azure-tools/typespec-azure-core/use-standard-operations" "Legacy LRO uses local template"
-  #suppress "@azure-tools/typespec-azure-core/long-running-polling-operation-required" "Operation link pollingOperation is not required for getLroMetadata"
+  @pollingOperation(CreateResourcePollViaOperationLocation.getJob)
   @doc("Creates a Job")
   @route("/jobs")
-  @post
-  createJob is Local.LongRunningLegacyOperation<JobData, JobResult, JobResult>;
+  createJob is LongRunningRpcOperation<JobData, JobResult, JobResult>;
 }