add start_delay to ActivityExecutionInfo

openapi/openapiv2.json

@@ -13358,6 +13358,10 @@
         "sdkVersion": {
           "type": "string",
           "description": "The version of the SDK of the worker that most recently picked up an attempt of this activity.\nOverwritten on each new attempt. Empty if unknown."
+        },
+        "startDelay": {
+          "type": "string",
+          "description": "Time to wait before dispatching the first activity task. This delay is not applied to retry attempts."
         }
       },
       "description": "Information about a standalone activity."

openapi/openapiv3.yaml

@@ -9770,6 +9770,10 @@ components:
           description: |-
             The version of the SDK of the worker that most recently picked up an attempt of this activity.
              Overwritten on each new attempt. Empty if unknown.
+        startDelay:
+          pattern: ^-?(?:0|[1-9][0-9]{0,11})(?:\.[0-9]{1,9})?s$
+          type: string
+          description: Time to wait before dispatching the first activity task. This delay is not applied to retry attempts.
       description: Information about a standalone activity.
     ActivityExecutionListInfo:
       type: object

temporal/api/activity/v1/message.proto

@@ -178,6 +178,9 @@ message ActivityExecutionInfo {
     // The version of the SDK of the worker that most recently picked up an attempt of this activity.
     // Overwritten on each new attempt. Empty if unknown.
     string sdk_version = 36;
+
+    // Time to wait before dispatching the first activity task. This delay is not applied to retry attempts.
+    google.protobuf.Duration start_delay = 37;
 }
 
 // Limited activity information returned in the list response.