Add generic durable triggers

package.json

@@ -10,16 +10,17 @@
         "test": "mocha 'dist/test/**/*.test.js'"
     },
     "dependencies": {
-        "@azure/functions": "^4.0.0-alpha.2"
+        "@azure/functions": "^4.0.0-alpha.2",
+        "durable-functions": "^2.0.2"
     },
     "devDependencies": {
         "@types/chai": "^4.0.0",
         "@types/mocha": "^9.0.0",
         "@types/node": "^18.0.0",
         "chai": "^4.0.0",
+        "func-cli-nodejs-v4": "4.0.4764",
         "mocha": "^9.0.0",
-        "typescript": "^4.0.0",
-        "func-cli-nodejs-v4": "4.0.4764"
+        "typescript": "^4.0.0"
     },
     "main": "dist/src/index.js"
-}
+}

src/functions/durable-generic.ts

@@ -0,0 +1,51 @@
+import { app, HttpRequest, input, InvocationContext, trigger } from "@azure/functions";
+import * as df from "durable-functions";
+
+app.generic('DurableFunctionsOrchestratorJS', {
+    trigger: trigger.generic({
+        type: 'orchestrationTrigger'
+    }),
+    handler: df.orchestrator(function* (context) {
+        const outputs = [];
+        outputs.push(yield context.df.callActivity("Hello", "Tokyo"));
+        outputs.push(yield context.df.callActivity("Hello", "Seattle"));
+        outputs.push(yield context.df.callActivity("Hello", "Cairo"));
+
+        return outputs;
+    })
+})
+
+app.generic('Hello', {
+    trigger: trigger.generic({
+        type: 'activityTrigger',
+    }),
+    handler: async function(context: InvocationContext, name: string): Promise<string> {
+        return `Hello ${name}`
+    }
+})
+
+const clientInput = input.generic({
+    type: 'orchestrationClient'
+});
+
+app.generic('DurableFunctionsHttpStart', {
+    trigger: trigger.generic({
+        type: 'httpTrigger',
+        authLevel: 'function',
+        route: 'orchestrators/{functionName}',
+        methods: [
+            'post', 'get'
+        ],
+    }),
+    extraInputs: [clientInput],
+    return: {name: "$return", type:'http'},
+    handler: async function (context: InvocationContext, req: HttpRequest): Promise<any> {
+        // @ts-expect-error: whatever
+        const client = df.getClient(context, clientInput);
+        const instanceId = await client.startNew(req.params.functionName, undefined, req.body);
+
+        context.log(`Started orchestration with ID = '${instanceId}'.`);
+
+        return client.createCheckStatusResponse(req, instanceId);
+    }
+})

src/index.ts

@@ -13,7 +13,5 @@ app.timer('timerTrigger1', {
     handler: (context: InvocationContext, myTimer: Timer) => {
         var timeStamp = new Date().toISOString();
         context.log('The current time is: ', timeStamp);
-    }
-});
-
-
+    } 
+});