Add initial code for notesApp example. Fix isFromExt detection.

examples/notesAppJS/README.md

@@ -0,0 +1,14 @@
+A Notes app
+===========
+
+To run this example
+
+```bash
+$ docker run -p 172.17.0.1:27017:27017 --name notes-mongo -d mongo
+
+$ cd notesBackend
+$ npm install
+$ lever deploy
+```
+
+... To be continued.

examples/notesAppJS/notesBackend/backend.js

@@ -0,0 +1,67 @@
+
+'use strict';
+
+const MongoClient = require('mongodb').MongoClient;
+const lodash = require('lodash');
+
+const mongoUrl = 'mongodb://172.17.0.1:27017/notesApp'
+
+module.exports.addNote = (note, callback) => {
+    getDb((err, db) => {
+        if (err) {
+            callback(err);
+            return;
+        }
+
+        db.collection('notes').insertOne({
+            note,
+        }, (err, result) => {
+            if (err) {
+                console.log(err);
+                callback(err);
+                return;
+            }
+
+            callback(null, null);
+        });
+    });
+};
+
+module.exports.getNotes = (callback) => {
+    getDb((err, db) => {
+        if (err) {
+            callback(err);
+            return;
+        }
+
+        db.collection('notes').find({}).toArray((err, docs) => {
+            if (err) {
+                console.log(err);
+                callback(err);
+                return;
+            }
+
+            const notes = lodash.map(docs, (doc) => {
+                return doc.note;
+            });
+            callback(null, notes);
+        });
+    });
+};
+
+let cachedDb = null;
+function getDb(callback) {
+    if (cachedDb !== null) {
+        callback(null, cachedDb);
+        return;
+    }
+    MongoClient.connect(mongoUrl, (err, db) => {
+        if (err) {
+            console.log(err);
+            callback(err);
+            return;
+        }
+        cachedDb = db;
+        callback(null, db);
+    });
+}

examples/notesAppJS/notesBackend/lever.json

@@ -0,0 +1,4 @@
+{
+    "name": "notesBackend",
+    "jsEntry": "backend.js"
+}

examples/notesAppJS/notesBackend/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "notes-backend",
+  "version": "0.0.0",
+  "description": "",
+  "main": "backend.js",
+  "author": "",
+  "license": "Apache-2.0",
+  "private": true,
+  "dependencies": {
+    "lodash": "^4.13.1",
+    "mongodb": "^2.1.21"
+  }
+}

host/proxyextout.go

@@ -102,7 +102,7 @@ func (proxy *LeverProxy) handleExtOutStream(
 	).Debug("Receiving stream")
 	streamLogger = streamLogger.WithFields("streamID", streamID)
 
-	isFromExt := core.IsInternalEnvironment(srcEnv)
+	isFromExt := !core.IsInternalEnvironment(srcEnv)
 	hostInfo, err := proxy.finder.GetHost(
 		leverURL.Environment, leverURL.Service, leverURL.Resource, isFromExt)
 	if err != nil {