fix: reverse the parameter order when invoking

lib/event-handler.js

@@ -1,4 +1,4 @@
-const { Receiver } = require('cloudevents');
+const { HTTP } = require('cloudevents');
 const Spec = require('./ce-constants.js').Spec;
 
 function use(fastify, opts, done) {
@@ -14,8 +14,10 @@ function use(fastify, opts, done) {
   fastify.addHook('preHandler', function(request, reply, done) {
     if (request.isCloudEvent()) {
       try {
-        const event = Receiver.accept(request.headers, request.body);
-        request.fcontext.cloudevent = event;
+        request.fcontext.cloudevent = HTTP.toEvent({
+          headers: request.headers, 
+          body: request.body
+        });
       } catch (err) {
         if (err.message.startsWith('invalid spec version')) {
           reply.code(406);

lib/invoker.js

@@ -19,7 +19,7 @@ module.exports = function invoker(func) {
       if (context.cloudevent) {
         // If there is a cloud event, provide the data
         // as the first parameter
-        payload.response = await func(context.cloudevent.data, context);
+        payload.response = await func(context, context.cloudevent.data);
       } else {
         // Invoke with context
         // TODO: Should this actually just get the Node.js request object?

test/fixtures/cloud-event/index.js

@@ -1,4 +1,4 @@
-module.exports = function testFunc(data, context) {
+module.exports = function testFunc(context, data) {
   if (context.cloudevent) return { message: data.message };
   else return new Error('No cloud event received');
 };

test/fixtures/cloud-event/with-response.js

@@ -1,4 +1,4 @@
-module.exports = function testFunc(data, context) {
+module.exports = function testFunc(context, data) {
   if (context.cloudevent) {
     const response = {
       message: data.message

test/test.js

@@ -229,12 +229,12 @@ test('Handles 1.0 CloudEvent Message responses', t => {
   { log: false });
 });
 
-test('Extracts event data as the first parameter to a function', t => {
+test('Extracts event data as the second parameter to a function', t => {
   const data = {
     lunch: "tacos"
   };
 
-  framework(menu => {
+  framework((context, menu) => {
     t.equal(menu.lunch, data.lunch);
     return menu;
   }, server => {
@@ -260,7 +260,7 @@ test('Extracts event data as the first parameter to a function', t => {
 });
 
 test('Successfully handles events with no data', t => {
-  framework((data, context) => {
+  framework((context, data) => {
     t.equal(data, undefined);
     t.true(context.cloudevent instanceof CloudEvent);
     return { status: 'done' }
@@ -279,7 +279,7 @@ test('Successfully handles events with no data', t => {
         t.end();
         server.close();
       });
-  });
+  }, { log: false });
 });
 
 test('Responds with 406 Not Acceptable to unknown cloud event versions', t => {