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Open Service Broker API Profile (master - might contain changes that are not yet released)

Abstract

The Open Service Broker API specification allows for extensions and variations based on the environments in which it is being used; this document contains the suggested usage pattern for some of those variants.

While use of this profile is OPTIONAL, an implementation is not compliant with this profile if it fails to satisfy one or more of the MUST, SHALL or REQUIRED level requirements defined herein.

Table of Contents

Notations and Terminology

Notational Conventions

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

Terminology

Please refer to terminology defined by the Open Service Broker API specification.

Originating Identity Header

In the Open Service Broker API specification it defines an additional HTTP Header that can be included in messages from the Platform to identify the user that requested the action to be taken.

The header consists of two parts: a platform string and value string, where the value is a Base64 encoded serialized JSON object. Both parts will vary based on the Platform which is being used. The following sections define the values to be used based on the Platform and which properties are expected to appear in the value JSON.

Note that when both the originating identity HTTP Header and the Context object appear in the same message the platform value MUST be the same for both.

Cloud Foundry Originating Identity Header

platform Value: cloudfoundry

The following properties MUST appear within the JSON encoded value:

Property Type Description
user_id string The user_id value from the Cloud Foundry JWT token.

Platforms MAY include additional properties.

For example, a value of:

{
  "user_id": "683ea748-3092-4ff4-b656-39cacc4d5360"
}

would appear in the HTTP Header as:

X-Broker-API-Originating-Identity: cloudfoundry eyANCiAgInVzZXJfaWQiOiAiNjgzZWE3NDgtMzA5Mi00ZmY0LWI2NTYtMzljYWNjNGQ1MzYwIiwNCiAgInVzZXJfbmFtZSI6ICJqb2VAZXhhbXBsZS5jb20iDQp9

Kubernetes Originating Identity Header

platform Value: kubernetes

The following properties MUST appear within the JSON encoded value:

Property Type Description
username string The username property from the Kubenernetes user.info object.
uid string The uid property from the Kubenernetes user.info object.
groups array-of-strings The groups property from the Kubenernetes user.info object.
extra map-of-array-of-strings The extra property from the Kubernetes user.info object.

Platforms MAY include additional properties.

For example, a value of:

{
  "username": "duke",
  "uid": "c2dde242-5ce4-11e7-988c-000c2946f14f",
  "groups": [ "admin", "dev" ],
  "extra": {
    "mydata": [ "data1", "data3" ]
  }
}

would appear in the HTTP Header as:

X-Broker-API-Originating-Identity: kubernetes eyANCiAgInVzZXJuYW1lIjogImR1a2UiLA0KICAidWlkIjogImMyZGRlMjQyLTVjZTQtMTFlNy05ODhjLTAwMGMyOTQ2ZjE0ZiIsDQogICJncm91cHMiOiB7ICJhZG1pbiIsICJkZXYiIH0NCn0=

Context Object

In the Open Service Broker API specification there are certain message flows that include a context property. This property is defined as an opaque JSON object that is meant to contain contextual information about the environment in which the Platform or Application is executing.

While the context property is defined as an opaque JSON object, in practice, it is often useful and necessary for there to be an agreed upon set of properties to ensure a common understanding of this data between the Platform and the Service Brokers.

Context Object Properties

The list of properties within the Context Object can vary depending on which Service Broker API is being invoked and which Platform is being used. This section will define a set of properties for each Platform and specify when each is meant to be used. Platforms MAY choose to provide additional properties beyond the ones defined in this document.

Each property will include the version of the Open Service Broker API in which it was introduced. For any API call in which that property is mandatory, it is only mandatory for the specified version of the specification or higher.

Aside from the Platform specific properties, defined in the following sections, there is one common property called platform that MUST also appear within context to indicate which Platform is being used.

The platform property MUST be a string and serialized as follows:

"platform": "platform-string-here"

Each section below will define the platform value that MUST be used based on the Platform and the set of additional properties that MUST be present.

Note that when both the originating identity HTTP Header and the Context object appear in the same message the platform value MUST be the same for both.

Cloud Foundry Context Object

platform Property Value: cloudfoundry

The following properties are defined for usage within a Cloud Foundry deployment:

  • organization_guid

    Version: 2.11

    The GUID of the organization that a Service Instance is associated with. This property MUST be a non-empty string serialized as follows:

    "organization_guid": "organization-guid-here"
    

    For example:

    "organization_guid": "1113aa0-124e-4af2-1526-6bfacf61b111"
    
  • space_guid

    Version: 2.11

    The GUID of the space that a Service Instance is associated with. This property MUST be a non-empty string serialized as follows:

    "space_guid": "space-guid-here"
    

    For example:

    "space_guid": "aaaa1234-da91-4f12-8ffa-b51d0336aaaa"
    

The following table specifies which properties will appear in each API. All properties specified are REQUIRED unless otherwise noted.

Request API Properties
PUT /v2/service_instances/:instance_id organization_guid, space_guid
PATCH /v2/service_instances/:instance_id organization_guid, space_guid
PUT /v2/service_instances/:instance_id/service_bindings/:binding_id organization_guid, space_guid

The following example shows a context object that might appear as part of a Cloud Foundry API call:

"context": {
  "platform": "cloudfoundry",
  "organization_guid": "1113aa0-124e-4af2-1526-6bfacf61b111",
  "space_guid": "aaaa1234-da91-4f12-8ffa-b51d0336aaaa"
}

Kubernetes Context Object

platform Property Value: kubernetes

The following properties are defined for usage within a Kubernetes deployment:

  • namespace

    Version: 2.11

    The name of the Kubernetes namespace in which the Service Instance will be visible. This property MUST be a non-empty string serialized as follows:

    "namespace": "namespace-name-here"
    

    For example:

    "namespace": "testing"
    
  • clusterid

    Version: 2.14

    The unique identifier for the Kubernetes cluster from which the request was sent. This property can be useful when a Service Broker tries to call back to a Platform that is managing multiple Kubernetes clusters. Typically this value will be static for the lifetime of the cluster, however, that is a Platform implementation choice. Brokers ought to take care that, while atypical, it is possible for the value to change over time.

    This property MUST be a non-empty string serialized as follows:

    "clusterid": "id-goes-here"
    

    For example:

    "clusterid": "644e1dd7-2a7f-18fb-b8ed-ed78c3f92c2b"
    

The following table specifies which properties will appear in each API. All properties specified are REQUIRED unless otherwise noted.

Request API Properties
PUT /v2/service_instances/:instance_id namespace, clusterid
PATCH /v2/service_instances/:instance_id namespace, clusterid
PUT /v2/service_instances/:instance_id/service_bindings/:binding_id namespace, clusterid

Example:

The following example shows a context property that might appear as part of a Kubernetes API call:

"context": {
  "platform": "kubernetes",
  "namespace": "development",
  "clusterid": "8263feba-9b8a-23ae-99ed-abcd1234feda"
}

Bind Resource Object

In the Open Service Broker API specification, requests to create a Service Binding can contain a bind_resource object in which Platforms MAY choose to add additional fields.

Cloud Foundry Bind Resource Object

The following properties are defined for usage within a Cloud Foundry deployment:

  • space_guid This OPTIONAL property is the GUID of a space that a Service Binding is associated with. If present, this property MUST be a non-empty string serialized as follows:
    "space_guid": "space-guid-here"
    
    For example:
    "space_guid": "15823972-c216-4ba5-9f3f-e75b0b891297"
    

The following example shows a bind_resource object that might appear as part of a Cloud Foundry API call:

"bind_resource": {
  "app_guid": "5e76c9bf-d5e3-46bf-9877-6d8dddfc8a45",
  "space_guid": "15823972-c216-4ba5-9f3f-e75b0b891297"
}

Service Metadata

While the specification does not mandate the property names used in the metadata objects, it is RECOMMENDED that the following names be used when possible in an attempt to provide some degree of interoperability and consistency.

Service Metadata Fields

Service Broker API Field Type Description
metadata.displayName string The name of the service to be displayed in graphical clients.
metadata.imageUrl string The URL to an image or a data URL containing an image.
metadata.longDescription string Long description.
metadata.providerDisplayName string The name of the upstream entity providing the actual service.
metadata.documentationUrl string Link to documentation page for the service.
metadata.supportUrl string Link to support page for the service.

Plan Metadata Fields

Service Broker API Field Type Description
metadata.bullets array-of-strings Features of this plan, to be displayed in a bulleted-list.
metadata.costs array-of-objects An array-of-objects that describes the costs of a service, in what currency, and the unit of measure. If there are multiple costs, all of them could be billed to the user (such as a monthly + usage costs at once).
metadata.displayName string Name of the plan to be displayed to clients.

Cost Object

This object describes the costs of a service, in what currency, and the unit of measure.

Field Type Description
amount* object An array of pricing in various currencies for the cost type as key-value pairs where key is currency code and value (as a float) is currency amount.
unit* string Display name for type of cost, e.g. Monthly, Hourly, Request, GB.

* Fields with an asterisk are REQUIRED.

For example:

"costs": [
  {
    "amount": {
      "usd": 649.0
    },
    "unit": "MONTHLY"
  }
]

Example Service Broker Response Body

The example below contains a catalog of one service, having one Service Plan. Of course, a Service Broker can offer a catalog of many services, each having many plans.

{
  "services":[
    {
      "id":"766fa866-a950-4b12-adff-c11fa4cf8fdc",
      "name":"cloudamqp",
      "description":"Managed HA RabbitMQ servers in the cloud.",
      "requires":[],
      "tags":[
        "amqp",
        "rabbitmq",
        "messaging"
      ],
      "metadata":{
        "displayName":"CloudAMQP",
        "imageUrl":"https://d33na3ni6eqf5j.cloudfront.net/app_resources/18492/thumbs_112/img9069612145282015279.png",
        "longDescription":"Managed, highly available, RabbitMQ clusters in the cloud.",
        "providerDisplayName":"84codes AB",
        "documentationUrl":"http://docs.cloudfoundry.com/docs/dotcom/marketplace/services/cloudamqp.html",
        "supportUrl":"http://www.cloudamqp.com/support.html"
      },
      "dashboard_client":{
        "id":"p-mysql-client",
        "secret":"p-mysql-secret",
        "redirect_uri":"http://p-mysql.example.com/auth/create"
      },
      "plans":[
        {
          "id":"024f3452-67f8-40bc-a724-a20c4ea24b1c",
          "name":"bunny",
          "description":"A mid-sided plan.",
          "metadata":{
            "bullets":[
              "20 GB of messages",
              "20 connections"
            ],
            "costs":[
              {
                "amount":{
                  "usd":99.0
                },
                "unit":"MONTHLY"
              },
              {
                "amount":{
                  "usd":0.99
                },
                "unit":"1GB of messages over 20GB"
              }
            ],
            "displayName":"Big Bunny"
          }
        }
      ]
    }
  ]
}

Cloud Foundry Service Metadata

In addition to the metadata described in Service Metadata, Service Brokers MAY also expose the following fields to enable Cloud Foundry specific behaviour.

Service Metadata Fields

Broker API Field Type Description
metadata.shareable string Allows Service Instances to be shared across orgs and spaces.

Catalog Extensions

In addition to the fields described in the Catalog, Service Brokers MAY also expose the following fields to enable Platform specific behaviour.

Cloud Foundry Catalog Extensions

Field Type Description
services[n].dashboard_client DashboardClient Contains the data necessary to activate the Dashboard SSO feature for this service.
Dashboard Client Object
Response Field Type Description
id string The id of the OAuth client that the dashboard will use. If present, MUST be a non-empty string.
secret string A secret for the dashboard client. If present, MUST be a non-empty string.
redirect_uri string A URI for the service dashboard. Validated by the OAuth token server when the dashboard requests a token.

Example Catalog

{
  "services": [{
    "name": "fake-service",
    "id": "acb56d7c-XXXX-XXXX-XXXX-feb140a59a66",
    "description": "A fake service.",
    "dashboard_client": {
      "id": "398e2f8e-XXXX-XXXX-XXXX-19a71ecbcf64",
      "secret": "277cabb0-XXXX-XXXX-XXXX-7822c0a90e5d",
      "redirect_uri": "http://localhost:1234"
    }
  }]
}