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Learning Docker

You're reading from   Learning Docker Build, ship, and scale faster

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Product type Paperback
Published in May 2017
Publisher
ISBN-13 9781786462923
Length 300 pages
Edition 2nd Edition
Tools
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Authors (3):
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Jeeva S. Chelladhurai Jeeva S. Chelladhurai
Author Profile Icon Jeeva S. Chelladhurai
Jeeva S. Chelladhurai
Pethuru Raj Pethuru Raj
Author Profile Icon Pethuru Raj
Pethuru Raj
Vinod Singh Vinod Singh
Author Profile Icon Vinod Singh
Vinod Singh
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Toc

Table of Contents (13) Chapters Close

Preface 1. Getting Started with Docker 2. Handling Docker Containers FREE CHAPTER 3. Building Images 4. Publishing Images 5. Running Your Private Docker Infrastructure 6. Running Services in a Container 7. Sharing Data with Containers 8. Orchestrating Containers 9. Testing with Docker 10. Debugging Containers 11. Securing Docker Containers 12. The Docker Platform – Distinct Capabilities and Use Cases

Webhook notifications

Docker Registry has the in-built capability of sending notifications based on registry activities:

Notifications are sent to the endpoints via HTTP. This complete notification is based on the listener and broadcaster architecture. Each endpoint has its own queue and all actions (push/pull/delete) trigger the events. These events are queued and once the event reaches the end of the queue, it triggers an HTTP request to the endpoint. The events are sent to each endpoint, but the order is not guaranteed.

Events have a well-defined JSON structure and are sent as the body of the notification. One or more events are sent in the structure and are called an envelope. An envelope may contain one or more events. The registry is also capable of receiving responses from endpoints. The responses with 2XX or 3XX response codes are considered as valid responses and consider the message delivered.

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