refactor(functions): declarative function signature for helloworld_http (GoogleCloudPlatform#1553)

Author: anniefu

functions/helloworld_http/SampleUnitTest.php

@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2020 Google LLC.
  *

functions/helloworld_http/composer.json

@@ -1,6 +1,7 @@
 {
     "require": {
-        "google/cloud-functions-framework": "^1.0"
+        "php": ">= 7.4",
+        "google/cloud-functions-framework": "^1.1"
     },
     "scripts": {
         "start": [

functions/helloworld_http/index.php

@@ -16,8 +16,15 @@
 <!-- [START functions_helloworld_http] ->
 <?php
 
+use Google\CloudFunctions\FunctionsFramework;
 use Psr\Http\Message\ServerRequestInterface;
 
+// Register the function with Functions Framework.
+// This enables omitting the `FUNCTIONS_SIGNATURE_TYPE=http` environment
+// variable when deploying. The `FUNCTION_TARGET` environment variable should
+// match the first parameter.
+FunctionsFramework::http('helloHttp', 'helloHttp');
+
 function helloHttp(ServerRequestInterface $request): string
 {
     $name = 'World';

functions/helloworld_pubsub/composer.json

@@ -1,11 +1,12 @@
 {
     "require": {
-        "google/cloud-functions-framework": "^1.0.0"
+        "cloudevents/sdk-php": "^1.0",
+        "google/cloud-functions-framework": "^1.1"
     },
     "scripts": {
         "start": [
             "Composer\\Config::disableProcessTimeout",
-            "FUNCTION_SIGNATURE_TYPE=cloudevent FUNCTION_TARGET=helloworldPubsub php -S localhost:${PORT:-8080} vendor/bin/router.php"
+            "FUNCTION_TARGET=helloworldPubsub php -S localhost:${PORT:-8080} vendor/bin/router.php"
         ]
     },
     "require-dev": {