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Let's Chat is a persistent messaging application that runs on SAP Cloud platform Cloud Foundry services. It used Node.js buildpack and MongoDB service.

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Let's Chat on SAP Cloud Platform

Let's Chat is a simple chat application like slack that runs on SAP Cloud Platform - Cloud Foundry services. It uses Node.js buildpack and MongoDB services from SAP Cloud Platform.

This repository demonstrates how to build and deploy Let's chat app to SAP Cloud Platform.

What is Cloud Foundry?

Cloud Foundry is an open source cloud platform as a service (PaaS) on which developers can build, deploy, run and scale applications on public and private cloud models.

SAP is a Founding Platinum Level Member of the Cloud Foundry Foundation, an independent not for profit Linux Foundation Collaborative Project, whose purpose is to drive global awareness and adoption of the Cloud Foundry open source project and foster a vibrant community of contributors. More Details: Cloud Foundry in SAP Cloud Platform

Requirements and Installation

You need to download and install Command line client for Cloud Foundry cli. Please refer Getting started with cli for more information.

You can sign-up for the free SAP Cloud Platform trial here - Login and Click “Start Cloud Foundry Trial” on the home screen. For more information on account creation, refer tutorial on account creation

Configuration

Let's Chat can be configured by YAML (manifest.yml). Although you can deploy apps without a manifest, manifests provide consistency and reproducibility. This can be useful when when you want your apps to be portable between different clouds.

Manifests are written in YAML. The manifest in this project illustrates some YAML conventions, as follows:

  • The manifest begins with three dashes.
  • The applications block begins with a heading followed by a colon.
  • The application name is preceded by a single dash and one space.
  • Subsequent lines in the block are indented two spaces to align with name.

Deployment on Cloud Foundry

Download the Project zip file and extract it. Navigate inside the folder which has the manifest file.

To Set the API endpoint of CLI to the cloud controller of SAP trial instance, Please use the following command.

cf api https://api.cf.eu10.hana.ondemand.com

Check the Regions and Hosts available for Cloud foundry environment here - API

For more help in cf commands,

cf help

Log on to the trial instance with your SAP ID and password. (The login command may ask you for your organization and space. You can find this information in the SAP Cloud cockpit.)

cf login    

Let’s create a service instance you may want to use within your application, e.g. to store data.

To list all services managed by service brokers execute the following command:

cf marketplace

Now, let’s create a service instance of mongodb using an available service plan.

cf create-service mongodb v3.0-dev mongodb

Since binding of mongodb service is already configured in manifest, you can deploy the application by executing the following command in the root folder of the project where manifest file is kept.

cf push

Known Issues

The URL for your app must be unique from other apps hosted by Cloud Foundry. Use the following options with the cf CLI to help create a unique URL:

-n to assign a different HOST name for the app

--random-route to create a URL that includes the app name and random words

(or)

please add a suffix or prefix (or change the entire name) to the host attribute within the manifest.yml file to avoid 'The host is taken' error.

Features and Stuff

  • BYOS (bring your own server)
  • Persistent messages
  • Multiple rooms
  • Private and password-protected rooms
  • New message alerts / notifications
  • Mentions (hey @you/@all)
  • Image embeds / Giphy search
  • Code pasting
  • File uploads (Local / Amazon S3 / [Azure][azure])
  • Transcripts / Chat History (with search)
  • XMPP Multi-user chat (MUC)
  • 1-to-1 chat between XMPP users
  • Local / Kerberos / LDAP authentication
  • [Hubot Adapter][hubot]
  • REST-like API
  • Basic i18n support

License

Copyright (c) 2017 SAP SE or an SAP affiliate company. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at: http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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Let's Chat is a persistent messaging application that runs on SAP Cloud platform Cloud Foundry services. It used Node.js buildpack and MongoDB service.

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