Create a serverless Python application

We have similar applications available for Swift and Node.js.

This repository has code to create a serverless Backend for Frontend (BFF) using Python and IBM Cloud Functions, backed by a NoSQL database. Cloud Functions supplies basic Create, Read, Update, and Delete operations in a serverless environment. These functions can be mapped to an API gateway, then integrated into an iOS app for example, to enable persistence of data into a Cloudant NoSQL Database.

Cloudant NoSQL DB provides access to a fully managed NoSQL JSON data layer that's always-on. This service is compatible with CouchDB, and accessible through a simple to use HTTP interface for mobile and web application models.

Included Components

• Cloudant NoSQL DB: A fully managed data layer designed for modern web and mobile applications that leverages a flexible JSON schema.
• Continuous Delivery: Enable tool integrations that support your development, deployment, and operation tasks.
• GitLab: GitLab unifies issues, code review, CI, and CD into a single UI.

Featured Technologies

• IBM Cloud Functions: An event-action platform that allows you to execute code in response to an event.
• Python: A general purpose programming language.

Steps

While you can use the individual actions locally, this collection of endpoints is meant to be deployed to IBM Cloud Functions. You can deploy this application to IBM Cloud or deploy it manually by cloning this repo first.

You can then review the Actions in the IBM Cloud Console interface, along with your Cloud Functions APIs.

Method	HTTP request	Description
Create	POST /database	Inserts an object
Read	GET /database/objectId	Retrieves an object
ReadAll	GET /database	Retrieves all objects
Delete	DELETE /database/objectId	Deletes an object
DeleteAll	DELETE /database	Deletes all objects
update	PUT /database/objectId	Updates content of an object

Deploying to IBM Cloud

Use the button above to deploy this same application to IBM Cloud. This option will create a deployment pipeline, complete with a hosted Git lab project and DevOps toolchain. IBM Cloud DevOps services provides toolchains as a set of tool integrations that support development and deployment to IBM Cloud Functions.

Deploying Manually

To deploy this application to IBM Cloud using the command line, you can leverage IBM Cloud Developer Tools. You will need to have the credentials for a Cloudant or CouchDB service, and need to update the feilds in the localdev-config.json file

• Install the IBM Cloud Developer Tools on your machine by running the following command:

  curl -sL https://ibm.biz/idt-installer | bash
  

• Install the Whisk Deploy CLI.

  If on a Mac or Linux, ensure the deploy.sh script is executable and run it:

  chmod +x deploy.sh
  ./deploy.sh
  

  Alternatively, you can run the wskdeploy command directly, you use the --param command line flags to provide values for the services.cloudant.database and services.cloudant.url values.

  /wskdeploy -m "manifest.yml" --param "services.cloudant.url" "<url>" --param "services.cloudant.database" "products"

  Where <url> is the URL value from your Cloudant service credentials.

Next Steps

• Explore other sample applications on IBM Cloud.

License

Apache 2.0