Add trigger labels support and label callables. (#273)

Author: bklimt

spec/providers/https.spec.ts

@@ -234,7 +234,10 @@ describe('callable.FunctionBuilder', () => {
       const result = https.onCall((data) => {
         return 'response';
       });
-      expect(result.__trigger).to.deep.equal({httpsTrigger: {}});
+      expect(result.__trigger).to.deep.equal({
+        httpsTrigger: {},
+        labels: { 'deployment-callable': 'true' },
+      });
     });
 
     it('should handle success', () => {

src/cloud-functions.ts

@@ -159,7 +159,8 @@ export interface TriggerAnnotated {
       eventType: string;
       resource: string;
       service: string;
-    }
+    },
+    labels?: { [key: string]: string }
   };
 }
 

src/providers/https.ts

@@ -435,7 +435,10 @@ export function onCall(
     return corsHandler(req, res, () => func(req, res));
   };
 
-  corsFunc.__trigger = {httpsTrigger: {}};
+  corsFunc.__trigger = {
+    httpsTrigger: {},
+    labels: { 'deployment-callable': 'true' },
+  };
 
   return corsFunc;
 }