api

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Published: Feb 16, 2018 License: Apache-2.0 Imports: 0 Imported by: 0

README

Working on the Engine API

The Engine API is an HTTP API used by the command-line client to communicate with the daemon. It can also be used by third-party software to control the daemon.

It consists of various components in this repository:

  • api/swagger.yaml A Swagger definition of the API.
  • api/types/ Types shared by both the client and server, representing various objects, options, responses, etc. Most are written manually, but some are automatically generated from the Swagger definition. See #27919 for progress on this.
  • cli/ The command-line client.
  • client/ The Go client used by the command-line client. It can also be used by third-party Go programs.
  • daemon/ The daemon, which serves the API.

Swagger definition

The API is defined by the Swagger definition in api/swagger.yaml. This definition can be used to:

  1. Automatically generate documentation.
  2. Automatically generate the Go server and client. (A work-in-progress.)
  3. Provide a machine readable version of the API for introspecting what it can do, automatically generating clients for other languages, etc.

Updating the API documentation

The API documentation is generated entirely from api/swagger.yaml. If you make updates to the API, edit this file to represent the change in the documentation.

The file is split into two main sections:

  • definitions, which defines re-usable objects used in requests and responses
  • paths, which defines the API endpoints (and some inline objects which don't need to be reusable)

To make an edit, first look for the endpoint you want to edit under paths, then make the required edits. Endpoints may reference reusable objects with $ref, which can be found in the definitions section.

There is hopefully enough example material in the file for you to copy a similar pattern from elsewhere in the file (e.g. adding new fields or endpoints), but for the full reference, see the Swagger specification.

swagger.yaml is validated by hack/validate/swagger to ensure it is a valid Swagger definition. This is useful when making edits to ensure you are doing the right thing.

Viewing the API documentation

When you make edits to swagger.yaml, you may want to check the generated API documentation to ensure it renders correctly.

Run make swagger-docs and a preview will be running at http://localhost. Some of the styling may be incorrect, but you'll be able to ensure that it is generating the correct documentation.

The production documentation is generated by vendoring swagger.yaml into docker/docker.github.io.

Documentation

Index

Constants

View Source
const (
	// DefaultVersion of Current REST API
	DefaultVersion string = "1.36"

	// NoBaseImageSpecifier is the symbol used by the FROM
	// command to specify that no base image is to be used.
	NoBaseImageSpecifier string = "scratch"
)

Common constants for daemon and client.

View Source
const MinVersion string = "1.12"

MinVersion represents Minimum REST API version supported

Variables

This section is empty.

Functions

This section is empty.

Types

This section is empty.

Directories

Path Synopsis
Package types is used for API stability in the types and response to the consumers of the API stats endpoint.
Package types is used for API stability in the types and response to the consumers of the API stats endpoint.
backend
Package backend includes types to send information to server backends.
Package backend includes types to send information to server backends.
filters
Package filters provides tools for encoding a mapping of keys to a set of multiple values.
Package filters provides tools for encoding a mapping of keys to a set of multiple values.
plugins/logdriver
Package logdriver is a generated protocol buffer package.
Package logdriver is a generated protocol buffer package.
swarm/runtime
Package runtime is a generated protocol buffer package.
Package runtime is a generated protocol buffer package.
versions/v1p19
Package v1p19 provides specific API types for the API version 1, patch 19.
Package v1p19 provides specific API types for the API version 1, patch 19.
versions/v1p20
Package v1p20 provides specific API types for the API version 1, patch 20.
Package v1p20 provides specific API types for the API version 1, patch 20.

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