Add links in signal and signal-with-start responses

Author: long-nt-tran

openapi/openapiv2.json

@@ -16426,11 +16426,25 @@
         "started": {
           "type": "boolean",
           "description": "If true, a new workflow was started."
+        },
+        "signalLink": {
+          "$ref": "#/definitions/v1Link",
+          "description": "Link to be associated with the WorkflowExecutionSignaled event.\nAdded on the response to propagate the backlink."
+        },
+        "workflowStartLink": {
+          "$ref": "#/definitions/v1Link",
+          "description": "Workflow start link to be associated with the WorkflowExecutionStarted event."
         }
       }
     },
     "v1SignalWorkflowExecutionResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "link": {
+          "$ref": "#/definitions/v1Link",
+          "description": "Link to be associated with the WorkflowExecutionSignaled event.\nAdded on the response to propagate the backlink."
+        }
+      }
     },
     "v1StartActivityExecutionResponse": {
       "type": "object",

openapi/openapiv3.yaml

@@ -14155,6 +14155,16 @@ components:
         started:
           type: boolean
           description: If true, a new workflow was started.
+        signalLink:
+          allOf:
+            - $ref: '#/components/schemas/Link'
+          description: |-
+            Link to be associated with the WorkflowExecutionSignaled event.
+             Added on the response to propagate the backlink.
+        workflowStartLink:
+          allOf:
+            - $ref: '#/components/schemas/Link'
+          description: Workflow start link to be associated with the WorkflowExecutionStarted event.
     SignalWorkflowExecutionRequest:
       type: object
       properties:
@@ -14195,7 +14205,13 @@ components:
            - temporal.api.workflow.v1.PostResetOperation.SignalWorkflow.
     SignalWorkflowExecutionResponse:
       type: object
-      properties: {}
+      properties:
+        link:
+          allOf:
+            - $ref: '#/components/schemas/Link'
+          description: |-
+            Link to be associated with the WorkflowExecutionSignaled event.
+             Added on the response to propagate the backlink.
     StartActivityExecutionRequest:
       type: object
       properties:

temporal/api/workflowservice/v1/request_response.proto

@@ -793,6 +793,9 @@ message SignalWorkflowExecutionRequest {
 }
 
 message SignalWorkflowExecutionResponse {
+    // Link to be associated with the WorkflowExecutionSignaled event.
+    // Added on the response to propagate the backlink.
+    temporal.api.common.v1.Link link = 1;
 }
 
 message SignalWithStartWorkflowExecutionRequest {
@@ -865,6 +868,11 @@ message SignalWithStartWorkflowExecutionResponse {
     string run_id = 1;
     // If true, a new workflow was started.
     bool started = 2;
+    // Link to be associated with the WorkflowExecutionSignaled event.
+    // Added on the response to propagate the backlink.
+    temporal.api.common.v1.Link signal_link = 3;
+    // Workflow start link to be associated with the WorkflowExecutionStarted event.
+    temporal.api.common.v1.Link workflow_start_link = 4;
 }
 
 message ResetWorkflowExecutionRequest {