Overview

monasca-events-api is a RESTful API server that is designed with a layered architecture layered architecture.

Keystone Configuration

For secure operation of the Monasca Events API, the API must be configured to use Keystone in the configuration file under the middleware section. Monasca only works with a Keystone v3 server. The important parts of the configuration are explained below:

• serverVIP - This is the hostname or IP Address of the Keystone server
• serverPort - The port for the Keystone server
• useHttps - Whether to use https when making requests of the Keystone API
• truststore - If useHttps is true and the Keystone server is not using a certificate signed by a public CA recognized by Java, the CA certificate can be placed in a truststore so the Monasca API will trust it, otherwise it will reject the https connection. This must be a JKS truststore
• truststorePassword - The password for the above truststore
• connSSLClientAuth - If the Keystone server requires the SSL client used by the Monasca server to have a specific client certificate, this should be true, false otherwise
• keystore - The keystore holding the SSL Client certificate if connSSLClientAuth is true
• keystorePassword - The password for the keystore
• defaultAuthorizedRoles - An array of roles that authorize a user to access the complete Monasca API. User must have at least one of these roles. See below
• agentAuthorizedRoles - An array of roles that authorize only the posting of metrics. See Keystone Roles below
• adminAuthMethod - "password" if the Monasca API should adminUser and adminPassword to login to the Keystone server to check the user's token, "token" if the Monasca API should use adminToken
• adminUser - Admin user name
• adminPassword - Admin user password
• adminProjectId - Specify the project ID the api should use to request an admin token. Defaults to the admin user's default project. The adminProjectId option takes precedence over adminProjectName.
• adminProjectName - Specify the project name the api should use to request an admin token. Defaults to the admin user's default project. The adminProjectId option takes precedence over adminProjectName.
• adminToken - A valid admin user token if adminAuthMethod is token
• timeToCacheToken - How long the Monasca API should cache the user's token before checking it again

Installation

To install the events api, git clone the source and run the following commands:

sudo python setup.py install

If it installs successfully, you will need to make changes to the following two files to reflect your system settings, especially where kafka server is located:

/etc/monasca/events_api.ini
/etc/monasca/events_api.conf

Once the configurations are modified to match your environment, you can start up the server by following the following instructions.

To start the server, run the following command:

Running the server in foreground mode
gunicorn -k eventlet --worker-connections=2000 --backlog=1000 --paste /etc/monasca/events_api.ini

Running the server as daemons
gunicorn -k eventlet --worker-connections=2000 --backlog=1000
         --paste /etc/monasca/events_api.ini -D

To check if the code follows python coding style, run the following command from the root directory of this project

tox -e pep8

To run all the unit test cases, run the following command from the root directory of this project

tox -e py27   (or -e py26, -e py33)

Monasca Events API

Stream Definition Methods

POST /v2.0/stream-definitions

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

{
"fire_criteria": [
                {"event_type": "compute.instance.create.start"},
                {"event_type": "compute.instance.create.end"}
                ],
            "description": "provisioning duration",
            "name": "example",
            "group_by": ["instance_id"],
            "expiration": 3000,
            "select": [{
                "traits": {"tenant_id": "406904"},
                "event_type": "compute.instance.create.*"
                }],
            "fire_actions": [action_id],
            "expire_actions": [action_id]
            }

Request Example

POST /v2.0/stream-definitions HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

GET /v2.0/stream-definition

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

None.

Request Example

GET /v2.0/stream-definitions HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

Returns a JSON object with a 'links' array of links and an 'elements' array of stream definition objects with the following fields:

• id (string)
• name (string)
• fire_actions (string)
• description (string)
• expire_actions (string)
• created_at (datetime string)
• select
  • traits
    • tenant_id (string)
  • event_type (string)
• group_by (string)
• expiration (int)
• links - links to stream-definition
• updated_at (datetime string)
• actions_enabled (bool)
• fire_criteria - JSON list of event fire criteria

Response Body Example

{
  "links": [
    {
      "rel": "self",
      "href": "http://192.168.10.4:8072/v2.0/stream-definitions"
    }
  ],
  "elements": [
    {
      "id": "242dd5f4-2ef6-11e5-8945-0800273a0b5b",
      "fire_actions": [
        "56330521-92da-4a84-8239-73d880b978fa"
      ],
      "description": "provisioning duration",
      "expire_actions": [
        "56330521-92da-4a84-8239-73d880b978fa"
      ],
      "created_at": "2015-07-20T15:44:01",
      "select": [
        {
          "traits": {
            "tenant_id": "406904"
          },
          "event_type": "compute.instance.create.*"
        }
      ],
      "group_by": [
        "instance_id"
      ],
      "expiration": 3000,
      "links": [
        {
          "rel": "self",
          "href": "http://192.168.10.4:8072/v2.0/stream-definitions/242dd5f4-2ef6-11e5-8945-0800273a0b5b"
        }
      ],
      "updated_at": "2015-07-20T15:44:01",
      "actions_enabled": true,
      "name": "1437407040.8",
      "fire_criteria": [
        {
          "event_type": "compute.instance.create.start"
        },
        {
          "event_type": "compute.instance.create.end"
        }
      ]
    }
  ]
}

GET /v2.0/stream-definition/{definition_id}

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

None.

Request Example

GET /v2.0/stream-definitions/242dd5f4-2ef6-11e5-8945-0800273a0b5b HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

Returns a JSON object with a 'links' array of links and an 'elements' array of stream definition objects with the following fields:

• id (string)
• name (string)
• fire_actions (string)
• description (string)
• expire_actions (string)
• created_at (datetime string)
• select
  • traits
    • tenant_id (string)
  • event_type (string)
• group_by (string)
• expiration (int)
• links - links to stream-definition
• updated_at (datetime string)
• actions_enabled (bool)
• fire_criteria - JSON list of event fire criteria

Response Body Example

{
  "id": "242dd5f4-2ef6-11e5-8945-0800273a0b5b",
  "fire_actions": [
    "56330521-92da-4a84-8239-73d880b978fa"
  ],
  "description": "provisioning duration",
  "expire_actions": [
    "56330521-92da-4a84-8239-73d880b978fa"
  ],
  "created_at": "2015-07-20T15:44:01",
  "select": [
    {
      "traits": {
        "tenant_id": "406904"
      },
      "event_type": "compute.instance.create.*"
    }
  ],
  "group_by": [
    "instance_id"
  ],
  "expiration": 3000,
  "links": [
    {
      "rel": "self",
      "href": "http://192.168.10.4:8072/v2.0/stream-definitions/242dd5f4-2ef6-11e5-8945-0800273a0b5b"
    }
  ],
  "updated_at": "2015-07-20T15:44:01",
  "actions_enabled": true,
  "name": "1437407040.8",
  "fire_criteria": [
    {
      "event_type": "compute.instance.create.start"
    },
    {
      "event_type": "compute.instance.create.end"
    }
  ]
}

DELETE /v2.0/stream-definition/{definition_id}

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

None.

Request Example

DELETE /v2.0/stream-definitions/242dd5f4-2ef6-11e5-8945-0800273a0b5b HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

None.

Response Body Example

None.

POST /v2.0/transforms/

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

{
    "name": 'example',
    "description": 'an example definition',
    "specification": YAML_data
}

Request Example

POST /v2.0/transforms/ HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

None.

Response Body Example

None.

GET /v2.0/transforms/

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

None.

Request Example

GET /v2.0/transforms/ HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

Returns a JSON object with a 'links' array of links and an 'elements' array of stream definition objects with the following fields:

• id (string)
• name (string)
• description (string)
• enabled (bool)
• tenant_id (string)
• deleted_at (datetime)
• specification (string YAML data)
• created_at (datetime)
• updated_at (datetime)

Response Body Example

{
  "links": [
    {
      "rel": "self",
      "href": "http://192.168.10.4:8072/v2.0/transforms"
    }
  ],
  "elements": [
    {
      "enabled": 0,
      "id": "a794f22f-a231-47a0-8618-37f12b7a6f77",
      "tenant_id": "d502aac2388b43f392c302b37a401ae5",
      "deleted_at": null,
      "specification": YAML_data,
      "created_at": 1437407042,
      "updated_at": 1437407042,
      "description": "an example definition",
      "name": "func test2"
    }
  ]
}

GET /v2.0/transforms/{transform_id}

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

None.

Request Example

GET /v2.0/transforms/a794f22f-a231-47a0-8618-37f12b7a6f77 HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

Returns a JSON object with a 'links' array of links and an 'elements' array of stream definition objects with the following fields:

• id (string)
• name (string)
• description (string)
• enabled (bool)
• tenant_id (string)
• deleted_at (datetime)
• specification (string YAML data)
• links - links to transform definition
• created_at (datetime)
• updated_at (datetime)

Response Body Example

{
  "enabled": 0,
  "id": "a794f22f-a231-47a0-8618-37f12b7a6f77",
  "tenant_id": "d502aac2388b43f392c302b37a401ae5",
  "created_at": 1437407042,
  "specification": "YAML_data",
  "links": [
    {
      "rel": "self",
      "href": "http://192.168.10.4:8072/v2.0/transforms/a794f22f-a231-47a0-8618-37f12b7a6f77"
    }
  ],
  "deleted_at": null,
  "updated_at": 1437407042,
  "description": "an example definition",
  "name": "func test2"
}

DELETE /v2.0/transforms/{transform_id}

Headers

• X-Auth-Token (string, required) - Keystone auth token
• Accept (string) - application/json

Request Body

None.

Request Example

DELETE /v2.0/transforms/a794f22f-a231-47a0-8618-37f12b7a6f77 HTTP/1.1
Host: 192.168.10.4:8072
X-Auth-Token: 2b8882ba2ec44295bf300aecb2caa4f7
Accept: application/json
Cache-Control: no-cache

Response Body

None.

Response Body Example

None.

License

Copyright (c) 2015 Hewlett-Packard Development Company, L.P.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.