Learning Apache OpenWhisk. Developing Open Serverless Solutions

Spis treści ebooka

• Foreword
• Preface
  • Why Serverless?
  • Conventions Used in This Book
  • Using Code Examples
  • OReilly Online Learning
  • How to Contact Us
• I. Introducing OpenWhisk Development
• 1. Serverless and OpenWhisk Architecture
  • OpenWhisk Architecture
    • Functions and Events
    • Architecture Overview
    • Programming Languages for OpenWhisk
    • Actions and Action Composition
    • Action Chaining
  • How OpenWhisk Works
    • Nginx
    • Controller
    • Load Balancer
    • Invoker
    • Client
  • Serverless Execution Constraints
    • Actions Are Functional
    • Actions Are Event-Driven
    • Actions Do Not Have Local State
    • Actions Are Time-Bound
    • Actions Are Not Ordered
  • From Java EE to Serverless
    • Classic Java EE Architecture
    • Serverless Equivalent of Java EE
      • Tiers
      • Components
      • APIs
      • Connectors
      • Application servers
  • Summary
• 2. A Simple OpenWhisk Application
  • Getting Started
    • The Bash CLI
    • The IBM Cloud
  • Creating a Simple Contact Form
  • Form Validation
    • Address Validation
    • Returning the Result
  • Saving Form Data
    • Invoking Actions
    • Storing in the Database
  • Sending an Email
    • Configuring Mailgun
    • Writing an Action to Send Email
    • Creating an Action Sequence
  • Summary
• 3. The OpenWhisk CLI and JavaScript API
  • The wsk Command
    • Configuring the wsk Command
    • OpenWhisk Entity Names
  • Defining Packages
    • Package Binding
  • Creating Actions
    • Chaining Sequences of Actions
    • Including Some Code of Your Own as a Library
  • Inspecting Activations
  • Managing Triggers and Rules
    • Putting the Trigger to Work
  • Using a Feed
  • Generic JavaScript APIs
    • Asynchronous Invocation
    • Using Promises
    • Creating a Promise
  • Using the OpenWhisk API
    • Invoking OpenWhisk Actions
      • Accessing OpenWhisk from the outside
      • Invoking multiple promises
    • Firing Triggers
    • Inspecting Activations
  • Summary
• 4. Common Design Patterns in OpenWhisk
  • Built-in Patterns
    • Singleton
    • Facade
    • Prototype
    • Decorator
  • Patterns Commonly Implemented with Actions
    • Strategy
    • Chain of Responsibility
    • Command
  • Summary
• 5. Integration Design Patterns in OpenWhisk
  • Integration Patterns
    • Proxy
    • Adapter
    • Bridge
    • Observer
  • User Interaction Patterns
    • Composite
    • Visitor
    • MVC
  • Summary
• 6. Unit Testing OpenWhisk Applications
  • Using the Jest Test Runner
    • Using Jest
    • Running Tests Locally
      • Matching versions and packages
      • Loading the code
      • Setting environment variables
    • Snapshot Testing
      • Updating a snapshot
  • Mocking
    • What Is a Mock?
    • Mocking an HTTPS Request
      • An action to be tested by mocking
      • Using a mock to test the action
      • Writing a mock for https
  • Mocking the OpenWhisk API
    • Using the Mocking Library to Invoke an Action
    • Mocking Action Parameters
    • Mocking a Sequence
  • Summary
• II. Advanced OpenWhisk Development
• 7. Developing OpenWhisk Actions in Python
  • The Python Runtime
    • Whats in the Python Runtime?
    • Libraries Available in the Runtime
  • Using Third-Party Libraries
    • Packaging a Python Application in a Zip File
    • Using virtualenv
    • How Virtualenv and Pip Work
    • Automating the Virtual Environment
    • Using the yattag Library
    • Building the Virtualenv, Including a Library
  • Using the OpenWhisk REST API
    • Authentication
    • Connecting to the API with curl
  • Using the OpenWhisk REST API in Python
  • Invocations, Activations, and Triggers in Python
    • Blocking Action Invocation
    • Nonblocking Trigger Invocation
    • Retrieving the Result of an Invocation
  • Testing Python Actions
    • Recreating the Python Runtime Environment Locally
    • Unit Test Examples
    • Invoking the OpenWhisk API Locally
    • Mocking Requests
  • Summary
• 8. Using CouchDB with OpenWhisk
  • How to Query CouchDB
  • Exploring CouchDB on the Command Line
    • How CouchDB works
    • Creating Database
    • Create
    • Retrieve
    • Update
    • Delete
    • Attachments
  • Querying CouchDB
    • Searching the Database
    • Indexes
    • Fields
    • Pagination Support
    • Bookmark Feature
    • Selectors
    • Operators
  • CouchDB Design Documents
    • Creating a Design Document
  • View Functions
    • Extracting Data with map Functions
    • Implementing a Join with map Functions
    • Joining with a Single Document
    • Aggregations with reduce Functions
  • Validation Functions
  • Using the Cloudant Package
    • CRUD Actions in the Cloudant Package
    • Queries and Views with Packages
  • Summary
• 9. An OpenWhisk Web Application in Python
  • CRUD Application Architecture
    • Deploying the Action
  • Abstracting Database Access
    • Implementing model.init()
    • Implementing model.insert()
    • Implementing model.find()
    • Testing insert and find
    • Implementing model.update() and model.delete()
    • Testing update and delete
  • The User Interface
    • Testing
      • The wrapper
      • BeautifulSoup
    • Rendering the Table with view.table
    • Rendering the Form with view.form
  • The Controller
    • Processing Operations
      • Testing the controller using mocking
    • Side Effects
  • Advanced Web Actions
  • Improving the CRUD Application
  • Validation and Error Reporting
    • Storing Error Messages
  • Pagination
    • Creating an Index
    • Using Bookmarks and Limits
    • Pagination
    • Processing the Bookmark
  • Uploading and Displaying Images
    • File Upload Form
    • Parsing the File Upload
    • Saving Data in the Database
    • Generating an <IMG> Tag
    • Generating a URL to Retrieve an Image
    • Rendering the Image with an HTTP Request
  • Summary
• 10. Developing OpenWhisk Actions in Go
  • Your First Golang Action
    • From Echo to Hello
  • Packaging Multiple Files
    • Imports, GOPATH, and the vendor Folder
    • Actions with Multiple Files in main
    • Actions with Multiple Packages
  • Actions Using Third-Party Libraries
    • How Go Uses Third-Party Open Source Libraries
    • Selecting a Given Version of a Library
    • Action Precompilation
  • Testing Go Actions
    • Writing Tests
    • Testing Using Examples
  • Embedding Resources
    • Using packr
  • Serving Resources with Web Actions
  • Accessing the OpenWhisk API in Go
    • Utilities
    • HTTP Requests
    • Invoking an OpenWhisk Action
    • Firing a Trigger
    • Retrieving the Data Associated with the Activation ID
  • Summary
• 11. Using Kafka with OpenWhisk
  • Introducing Apache Kafka
    • Kafka Brokers and Protocol
    • Messages and Keys
    • Topics and Partitions
    • Offsets and Client Groups
  • Creating a Kafka Instance in the IBM Cloud
    • Creating an Instance
    • Creating a Topic
    • Get Credentials
  • Using the messaging Package
    • Creating a Binding and a Feed
    • Receiving Messages with an Action
    • Sending Messages Using kafkacat
    • Testing the Kafka Broker
  • A Kafka Producer in Go
    • Creating a Producer
    • Sending a Kafka Message
    • Writing a Sender Action
    • Deploying and Testing the Producer
  • A Kafka Consumer in Go
    • Creating a Consumer
    • Receiving a Message
    • Writing a Receiver Action
    • Testing the Consumer
  • Implementing the Web Chat Application
    • Overview
    • User Interface
    • Initializing
    • Joining
    • Receiving
    • Sending
  • Summary
• 12. Deploying OpenWhisk with Kubernetes
  • Installing Kubernetes
    • Installation Types
  • Installing kubectl and Helm
  • Installing Kubernetes Locally
  • Installing Kubernetes in the Cloud
    • Architecture of a Kubernetes Cloud Deployment
    • Generic Procedure for Installing Kubernetes with cloud-init
      • Provisioning
        • IP and DNS name
        • Rook and Traefik
    • Installing on Hetzner Cloud
    • Installing on AWS Cloud
  • Installing Kubernetes on a Bare Metal Server
    • Collecting the Required Software
    • Network Configuration
    • Scripts for the Installation
    • Creating the Cluster
  • Installing OpenWhisk
    • Configuring Kubectl
    • Configuring Helm
    • Installing in Docker Desktop
      • Label the master
      • Get the internal IP
      • Write a parameter file
      • Deploy the chart
    • Installing in the Kubernetes Cluster
      • Label the workers
      • Generate credentials
      • Write a parameter file
      • Deploy the chart
  • Configuring the OpenWhisk Command-Line Interface
    • Configuring wsk Insecurely for Docker Desktop
    • Creating a New Namespace
  • Summary
  • Conclusion
• Index

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