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Joe Beda
2014-06-06 16:40:48 -07:00
commit 2c4b3a562c
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50
api/doc/controller-schema.json Normal file
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{
"$schema": "http://json-schema.org/draft-03/schema",
"type": "object",
"required": false,
"description": "A replicationController resource. A replicationController helps to create and manage a set of tasks. It acts as a factory to create new tasks based on a template. It ensures that there are a specific number of tasks running. If fewer tasks are running than `replicas` then the needed tasks are generated using `taskTemplate`. If more tasks are running than `replicas`, then excess tasks are deleted.",
"properties": {
"kind": {
"type": "string",
"required": false
},
"id": {
"type": "string",
"required": false
},
"creationTimestamp": {
"type": "string",
"required": false
},
"selfLink": {
"type": "string",
"required": false
},
"desiredState": {
"type": "object",
"required": false,
"description": "The desired configuration of the replicationController",
"properties": {
"replicas": {
"type": "number",
"required": false,
"description": "Number of tasks desired in the set"
},
"replicasInSet": {
"type": "object",
"required": false,
"description": "Required labels used to identify tasks in the set"
},
"taskTemplate": {
"type": "object",
"required": false,
"description": "Template from which to create new tasks, as necessary. Identical to task schema."
}
}
},
"labels": {
"type": "object",
"required": false
}
}
}

36
api/doc/service-schema.json Normal file
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{
"$schema": "http://json-schema.org/draft-03/schema",
"type": "object",
"required": false,
"description": "A service resource.",
"properties": {
"kind": {
"type": "string",
"required": false
},
"id": {
"type": "string",
"required": false
},
"creationTimestamp": {
"type": "string",
"required": false
},
"selfLink": {
"type": "string",
"required": false
},
"name": {
"type": "string",
"required": false
},
"port": {
"type": "number",
"required": false
},
"labels": {
"type": "object",
"required": false
}
}
}

87
api/doc/task-schema.json Normal file
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{
"$schema": "http://json-schema.org/draft-03/schema",
"type": "object",
"required": false,
"description": "Task resource. A task corresponds to a colocated group of [Docker containers](http://docker.io).",
"properties": {
"kind": {
"type": "string",
"required": false
},
"id": {
"type": "string",
"required": false
},
"creationTimestamp": {
"type": "string",
"required": false
},
"selfLink": {
"type": "string",
"required": false
},
"desiredState": {
"type": "object",
"required": false,
"description": "The desired configuration of the task",
"properties": {
"manifest": {
"type": "object",
"required": false,
"description": "Manifest describing group of [Docker containers](http://docker.io); compatible with format used by [Google Cloud Platform's container-vm images](https://developers.google.com/compute/docs/containers)"
},
"status": {
"type": "string",
"required": false,
"description": ""
},
"host": {
"type": "string",
"required": false,
"description": ""
},
"hostIP": {
"type": "string",
"required": false,
"description": ""
},
"info": {
"type": "object",
"required": false,
"description": ""
}
}
},
"currentState": {
"type": "object",
"required": false,
"description": "The current configuration and status of the task. Fields in common with desiredState have the same meaning.",
"properties": {
"manifest": {
"type": "object",
"required": false
},
"status": {
"type": "string",
"required": false
},
"host": {
"type": "string",
"required": false
},
"hostIP": {
"type": "string",
"required": false
},
"info": {
"type": "object",
"required": false
}
}
},
"labels": {
"type": "object",
"required": false
}
}
}

30
api/examples/controller-list.json Normal file
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{
"items": [
{
"id": "testRun",
"desiredState": {
"replicas": 2,
"replicasInSet": {
"name": "testRun"
},
"taskTemplate": {
"desiredState": {
"image": "dockerfile/nginx",
"networkPorts": [
{
"hostPort": 8080,
"containerPort": 80
}
]
},
"labels": {
"name": "testRun"
}
}
},
"labels": {
"name": "testRun"
}
}
]
}

18
api/examples/controller.json Normal file
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{
"id": "nginxController",
"desiredState": {
"replicas": 2,
"replicasInSet": {"name": "nginx"},
"taskTemplate": {
"desiredState": {
"manifest": {
"containers": [{
"image": "dockerfile/nginx",
"ports": [{"containerPort": 80, "hostPort": 8080}]
}]
}
},
"labels": {"name": "nginx"}
}},
"labels": {"name": "nginx"}
}

19
api/examples/service-list.json Normal file
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{
"items": [
{
"id": "example1",
"port": 8000,
"labels": {
"name": "nginx"
}
},
{
"id": "example2",
"port": 8080,
"labels": {
"env": "prod",
"name": "jetty"
}
}
]
}

7
api/examples/service.json Normal file
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{
"id": "example2",
"port": 8000,
"labels": {
"name": "nginx"
}
}

46
api/examples/task-list.json Normal file
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{
"items": [
{
"id": "my-task-1",
"labels": {
"name": "testRun",
"replicationController": "testRun"
},
"desiredState": {
"manifest": {
"containers": [{
"image": "dockerfile/nginx",
"ports": [{
"hostPort": 8080,
"containerPort": 80
}]
}
}
},
"currentState": {
"host": "host-1"
}
},
{
"id": "my-task-2",
"labels": {
"name": "testRun",
"replicationController": "testRun"
},
"desiredState": {
"manifest": {
"containers": [{
"image": "dockerfile/nginx",
"ports": [{
"hostPort": 8080,
"containerPort": 80
}]
}
}
},
"currentState": {
"host": "host-2"
}
}
]
}

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api/examples/task.json Normal file
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{
"id": "php",
"desiredState": {
"manifest": {
"containers": [{
"image": "dockerfile/nginx",
"ports": [{
"containerPort": 80,
"hostPort": 8080
}]
}]
}
},
"labels": {
"name": "foo"
}
}

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#%RAML 0.8
baseUri: http://server/api/{version}
title: Kubernetes
version: v1beta1
mediaType: application/json
documentation:
- title: Overview
content: |
The Kubernetes API currently manages 3 main resources: `tasks`,
`replicationControllers`, and `services`. Tasks correspond to
colocated groups of [Docker containers](http://docker.io) with
shared volumes, as supported by [Google Cloud Platform's
container-vm
images](https://developers.google.com/compute/docs/containers).
Singleton tasks can be created directly via the `/tasks`
endpoint. Sets of tasks may created, maintained, and scaled using
replicationControllers. Services create load-balanced targets
for sets of tasks.
- title: Resource identifiers
content: |
Each resource has a string `id` and list of key-value
`labels`. The `id` is generated by the system and is guaranteed
to be unique in space and time across all resources. `labels`
is a map of string (key) to string (value). Each resource may
have at most one label with a particular key. Individual labels
are used to specify identifying metadata that can be used to
define sets of resources by specifying required labels. Examples
of typical task label keys include `stage`, `service`, `name`,
`tier`, `partition`, and `track`, but you are free to develop
your own conventions.
- title: Creation semantics
content: |
Creation is currently not idempotent. We plan to add a
modification token to each resource. A unique value for the token
should be provided by the user during creation. If the user
specifies a duplicate token at creation time, the system should
return an error with a pointer to the exiting resource with that
token. In this way a user can deterministically recover from a
dropped connection during a resource creation request.
- title: Update semantics
content: |
Custom verbs are minimized and are used only for 'edge triggered'
actions such as a reboot. Resource descriptions are generally set
up with `desiredState` for the user provided parameters and
`currentState` for the actual system state. While consistent
terminology is used across these two stanzas they do not match
member for member.
When a new version of a resource is PUT the `desiredState` is
updated and available immediately. Over time the system will work
to bring the `currentState` into line with the `desiredState`. The
system will drive toward the most recent `desiredState` regardless
of previous versions of that stanza. In other words, if a value
is changed from 2 to 5 in one PUT and then back down to 3 in
another PUT the system isn't required to 'touch base' at 5 before
making 3 the `currentState`.
When doing an update, we assume that the entire `desiredState`
stanza is specified. If a field is omitted it is assumed that the
user is looking to delete that field. It is viable for a user to
GET the resource, modify what they like in the `desiredState` or
labels stanzas and then PUT it back. If the `currentState` is
included in the PUT it will be silently ignored.
While currently unspecified, it is intended that concurrent
modification should be accomplished with optimistic locking of
resources. We plan to add a modification token to each resource. If
this is included with the PUT operation the system will verify
that there haven't been other successful mutations to the
resource during a read/modify/write cycle. The correct client
action at this point is to GET the resource again, apply the
changes afresh and try submitting again.
Note that updates currently only work for replicationControllers
and services, but not for tasks. Label updates have not yet been
implemented, either.
/tasks:
get:
description: List all tasks on this cluster
responses:
200:
body:
application/json:
example: !include examples/task-list.json
post:
description: Create a new task. currentState is ignored if present.
body:
json/application:
schema: !include doc/task-schema.json
example: !include examples/task.json
/{taskId}:
get:
description: Get a specific task
responses:
200:
body:
application/json:
example: !include examples/task.json
put:
description: Update a task
body:
json/application:
schema: !include doc/task-schema.json
example: !include examples/task.json
delete:
description: Delete a specific task
responses:
200:
body:
application/json:
example: |
{
"success": true
}
/replicationControllers:
get:
description: List all replicationControllers on this cluster
responses:
200:
body:
application/json:
example: !include examples/controller-list.json
post:
description: Create a new controller. currentState is ignored if present.
body:
json/application:
schema: !include doc/controller-schema.json
example: !include examples/controller.json
/{controllerId}:
get:
description: Get a specific controller
responses:
200:
body:
application/json:
example: !include examples/controller.json
put:
description: Update a controller
body:
json/application:
schema: !include doc/controller-schema.json
example: !include examples/controller.json
delete:
description: Delete a specific controller
responses:
200:
body:
application/json:
example: |
{
"success": true
}
/services:
get:
description: List all services on this cluster
responses:
200:
body:
application/json:
example: !include examples/service-list.json
post:
description: Create a new service
body:
json/application:
schema: !include doc/service-schema.json
example: !include examples/service.json
/{serviceId}:
get:
description: Get a specific service
responses:
200:
body:
application/json:
example: !include examples/service.json
put:
description: Update a service
body:
json/application:
schema: !include doc/service-schema.json
example: !include examples/service.json
delete:
description: Delete a specific service
responses:
200:
body:
application/json:
example: |
{
"success": true
}