OneFlow Specification¶

The OpenNebula OneFlow API is a RESTfull service to create, control and monitor services composed of interconnected Virtual Machines with deployment dependencies between them. Each group of Virtual Machines is deployed and managed as a single entity, and is completely integrated with the advanced OpenNebula user and group management. There are two kind of resources; services templates and services. All data is sent and received as JSON.

This guide is intended for developers. The OpenNebula distribution includes a cli to interact with OneFlow and it is also fully integrated in the Sunstone GUI.

Authentication & Authorization¶

User authentication will be HTTP Basic access authentication. The credentials passed should be the User name and password.

curl -u "username:password" https://oneflow.server

Return Codes¶

The OneFlow API uses the following subset of HTTP Status codes:

200 OK : the request has succeeded.
201 Created : request was successful and a new resource has being created.
202 Accepted : the request has been accepted for processing, but the processing has not been completed.
204 No Content : the request has been accepted for processing, but no info in the response.
400 Bad Request : malformed syntax.
401 Unauthorized : bad authentication.
403 Forbidden : bad authorization.
404 Not Found : resource not found.
500 Internal Server Error : the server encountered an unexpected condition which prevented it from fulfilling the request.
501 Not Implemented : the functionality requested is not supported.

> POST /service_template HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: onflow.server:2474
>
< HTTP/1.1 400 Bad Request
< Content-Type: text/html;charset=utf-8
< Content-Type:application/json;charset=utf-8
< Content-Length: 40
<
{
  "error": {
    "message": "Role 'worker' 'cardinality' must be greater than or equal to 'min_vms'"
  }
}

The methods specified below are described without taking into account 4xx (can be inferred from authorization information in section above) and 5xx errors (which are method independent). HTTP verbs not defined for a particular entity will return a 501 Not Implemented.

Methods¶

Service¶

Method	URL	Meaning / Entity Body	Response
GET	`/service`	List the contents of the `SERVICE` collection.	200 OK: A JSON representation of the collection in the HTTP body.
GET	`/service/<id>`	Show the `SERVICE` resource identified by <id>.	200 OK: A JSON representation of the collection in the HTTP body.
DELETE	`/service/<id>`	Delete the `SERVICE` resource identified by <id>.	204:
POST	`/service/<id>/action`	Perform an action on the `SERVICE` resource identified by <id>. Available actions: shutdown, recover, chown, chgrp, chmod, release. It can also be used to perform an action in all the Virtual Machines. Available actions: shutdown, shutdown-hard, undeploy, undeploy-hard, hold, release, stop, suspend, resume, boot, delete, delete-recreate, reboot, reboot-hard, poweroff, poweroff-hard, snapshot-create, snapshot-revert, snapshot-delete, disk-snapshot-create, disk-snapshot-revert, disk-snapshot-delete.	204:
PUT	`/service/<id>`	Update the `SERVICE` resource identified by <id>.	204:
POST	`/service/<id>/scale`	Perform an scale operation on the `SERVICE` resource identified by <id>.	204:
POST	`/service/<id>/role/<name>/action`	Perform an action on all the Virtual Machines belonging to the `ROLE` identified by <name> of the `SERVICE` resource identified by <id>. Available actions: shutdown, shutdown-hard, undeploy, undeploy-hard, hold, release, stop, suspend, resume, boot, delete, delete-recreate, reboot, reboot-hard, poweroff, poweroff-hard, snapshot-create, snapshot-revert, snapshot-delete, disk-snapshot-create, disk-snapshot-revert, disk-snapshot-delete.	204:
POST	`/service/<id>/role_action`	Add or remove a role from running service.	204:

Service Pool¶

Method	URL	Meaning / Entity Body
POST	`/service_pool/purge_done`	Remove `SERVICES` that are in `DONE` state.

Service Template¶

Method	URL	Meaning / Entity Body	Response
GET	`/service_template`	List the contents of the `SERVICE_TEMPLATE` collection.	200 OK: A JSON representation of the collection in the HTTP body.
GET	`/service_template/<id>`	Show the `SERVICE_TEMPLATE` resource identified by <id>.	200 OK: A JSON representation of the collection in the HTTP body.
DELETE	`/service_template/<id>`	Delete the `SERVICE_TEMPLATE` resource identified by <id>.	204:
POST	`/service_template`	Create a new `SERVICE_TEMPLATE` resource.	201 Created: A JSON representation of the new `SERVICE_TEMPLATE` resource in the HTTP body.
PUT	`/service_template/<id>`	Update the `SERVICE_TEMPLATE` resource identified by <id>.	200 OK: A JSON representation of the collection in the HTTP body.
POST	`/service_template/<id>/action`	Perform an action on the `SERVICE_TEMPLATE` resource identified by <id>. Available actions: instantiate, chown, chgrp, chmod.	201:

Resource Representation¶

Service Schema¶

A Service is defined with JSON syntax templates.

Attribute	Type	Mandatory	Description
`name`	string	NO	Name of the service.
`deployment`	string	NO	Deployment strategy: none: All roles are deployed at the same time. straight: Each Role is deployed when all its parent Roles are running. Defaults to none.
`shutdown_action`	string	NO	VM shutdown action: ‘shutdown’ or ‘shutdown-hard’. If it is not set, the default set in `oneflow-server.conf` will be used.
`ready_status_gate`	boolean	NO	If ready_status_gate is set to true, a VM will only be considered to be in running state the following points are true: VM is in running state for OpenNebula. Which specifically means that LCM_STATE==3 and STATE>=3; The VM has READY=YES in the user template, this can be reported by the VM using OneGate.
`on_hold`	boolean	NO	If on_hold is set to true, all VMs of the service will be created in `HOLD` state.
`custom_attrs`	hash	NO	Hash of custom attributes to use in the service.
`networks`	hash	NO	Hash of virtual networks to use in the service.
`roles`	array of Roles	YES	Array of Roles, see below.

Each Role is defined as:

Attribute	Type	Mandatory	Description
`name`	string	YES	Role name, only word characters (letter, number, underscore) are allowed.
`cardinality`	integer	NO	Number of VMs to deploy. Defaults to 1.
`vm_template`	integer	YES	OpenNebula VM Template ID. See the OpenNebula documentation for VM Templates.
`parents`	array of string	NO	Names of the roles that must be deployed before this one.
`shutdown_action`	string	NO	VM shutdown action: ‘shutdown’ or ‘shutdown-hard’. If it is not set, the one set for the Service will be used.
`on_hold`	boolean	NO	If on_hold is set to true, all VMs of the role (and their child roles) will be created in `HOLD` state. If on_hold is already defined at the service level, it is not necessary to specify it at the role level.
`min_vms`	integer	NO (YES for elasticity)	Minimum number of VMs for elasticity adjustments.
`max_vms`	integer	NO (YES for elasticity)	Maximum number of VMs for elasticity adjustments.
`cooldown`	integer	NO	Cooldown period duration after a scale operation, in seconds. If it is not set, the default set in `oneflow-server.conf` will be used.
`elasticity_policies`	array of Policies	NO	Array of Elasticity Policies, see below.
`scheduled_policies`	array of Policies	NO	Array of Scheduled Policies, see below.

To define a elasticity policy:

Attribute	Type	Mandatory	Description
`type`	string	YES	Type of adjustment. Values: `CHANGE`, `CARDINALITY`, `PERCENTAGE_CHANGE`.
`adjust`	integer	YES	Positive or negative adjustment. Its meaning depends on ‘type’.
`min_adjust_step`	integer	NO	Optional parameter for `PERCENTAGE_CHAGE` adjustment type. If present, the policy will change the cardinality by at least the number of VMs set in this attribute.
`expression`	string	YES	Expression to trigger the elasticity.
`period_number`	integer	No	Number of periods that the expression must be true before the elasticity is triggered.
`period`	integer	NO	Duration, in seconds, of each period in `period_duration`.
`cooldown`	integer	NO	Cooldown period duration after a scale operation, in seconds. If it is not set, the one set for the Role will be used.

And each scheduled policy is defined as:

Attribute	Type	Mandatory	Description
`type`	string	YES	Type of adjustment. Values: `CHANGE`, `CARDINALITY`, `PERCENTAGE_CHANGE`.
`adjust`	integer	YES	Positive or negative adjustment. Its meaning depends on ‘type’.
`min_adjust_step`	integer	NO	Optional parameter for `PERCENTAGE_CHAGE` adjustment type. If present, the policy will change the cardinality by at least the number of VMs set in this attribute.
`recurrence`	string	NO	Time for recurring adjustments. Time is specified with the Unix cron syntax.
`start_time`	string	NO	Exact time for the adjustment.
`cooldown`	integer	NO	Cooldown period duration after a scale operation, in seconds. If it is not set, the one set for the Role will be used.

{
  :type => :object,
  :properties => {
    'name' => {
      :type => :string,
      :required => true
    },
    'deployment' => {
      :type => :string,
      :enum => %w{none straight},
      :default => 'none'
    },
    'description' => {
      :type => :string,
      :required => false
    },
    'shutdown_action' => {
      :type => :string,
      :enum => %w{terminate terminate-hard shutdown shutdown-hard},
      :required => false
    },
    'roles' => {
      :type => :array,
      :items => ROLE_SCHEMA,
      :required => true
    },
    'custom_attrs' => {
      :type => :object,
      :properties => {},
      :required => false
    },
    'custom_attrs_values' => {
      :type => :object,
      :properties => {},
      :required => false
    },
    'networks' => {
      :type => :object,
      :properties => {},
      :required => false
    },
    'networks_values' => {
      :type => :array,
      :items => {
        :type => :object,
        :properties => {}},
      :required => false
    },
    'ready_status_gate' => {
      :type => :boolean,
      :required => false
    },
    'on_hold' => {
      :type => :boolean,
      :required => false
    }
  }
}

Role Schema¶

{
  :type => :object,
  :properties => {
    'name' => {
      :type => :string,
      :required => true
    },
    'cardinality' => {
      :type => :integer,
      :default => 1,
      :minimum => 0
    },
    'vm_template' => {
      :type => :integer,
      :required => true
    },
    'vm_template_contents' => {
      :type => :string,
      :required => false
    },
    'parents' => {
      :type => :array,
      :items => {
        :type => :string
      }
    },
    'shutdown_action' => {
      :type => :string,
      :enum => ['shutdown', 'shutdown-hard']},
      :required => false
    },
    'min_vms' => {
      :type => :integer,
      :required => false,
      :minimum => 0
    },
    'max_vms' => {
      :type => :integer,
      :required => false,
      :minimum => 0
    },
    'cooldown' => {
      :type => :integer,
      :required => false,
      :minimum => 0
    },
    'on_hold' => {
      :type => :boolean,
      :required => false
    },
    'elasticity_policies' => {
      :type => :array,
      :items => {
        :type => :object,
        :properties => {
          'type' => {
            :type => :string,
            :enum => ['CHANGE', 'CARDINALITY', 'PERCENTAGE_CHANGE'],
            :required => true
          },
          'adjust' => {
            :type => :integer,
            :required => true
          },
          'min_adjust_step' => {
            :type => :integer,
            :required => false,
            :minimum => 1
          },
          'period_number' => {
            :type => :integer,
            :required => false,
            :minimum => 0
          },
          'period' => {
            :type => :integer,
            :required => false,
            :minimum => 0
          },
          'expression' => {
            :type => :string,
            :required => true
          },
          'cooldown' => {
            :type => :integer,
            :required => false,
            :minimum => 0
          }
        }
      }
    },
    'scheduled_policies' => {
      :type => :array,
      :items => {
        :type => :object,
        :properties => {
          'type' => {
            :type => :string,
            :enum => ['CHANGE', 'CARDINALITY', 'PERCENTAGE_CHANGE'],
            :required => true
          },
          'adjust' => {
            :type => :integer,
            :required => true
          },
          'min_adjust_step' => {
            :type => :integer,
            :required => false,
            :minimum => 1
          },
          'start_time' => {
            :type => :string,
            :required => false
          },
          'recurrence' => {
            :type => :string,
            :required => false
          }
        }
      }
    }
  }
}

Action Schema¶

{
  :type => :object,
  :properties => {
    'action' => {
      :type => :object,
      :properties => {
        'perform' => {
          :type => :string,
          :required => true
        },
        'params' => {
          :type => :object,
          :required => false,
          :propierties => {
            'merge_template' => {
                :type => object,
                :required => false
              }
            }
          }
        }
      }
    }
  }
}

Examples¶

Create a New Service Template¶

Method	URL	Meaning / Entity Body	Response
POST	`/service_template`	Create a new `SERVICE_TEMPLATE` resource.	201 Created: A JSON representation of the new `SERVICE_TEMPLATE` resource in the HTTP body.

curl http://127.0.0.1:2474/service_template -u 'oneadmin:password' -v --data '{
  "name":"web-application",
  "deployment":"straight",
  "roles":[
    {
      "name":"frontend",
      "cardinality":"1",
      "vm_template":"0",
      "shutdown_action":"shutdown",
      "min_vms":"1",
      "max_vms":"4",
      "cooldown":"30",
      "elasticity_policies":[
        {
          "type":"PERCENTAGE_CHANGE",
          "adjust":"20",
          "min_adjust_step":"1",
          "expression":"CUSTOM_ATT>40",
          "period":"3",
          "period_number":"30",
          "cooldown":"30"
        }
      ],
      "scheduled_policies":[
        {
          "type":"CHANGE",
          "adjust":"4",
          "recurrence":"0 2 1-10 * * "
        }
      ]
    },
    {
      "name":"worker",
      "cardinality":"2",
      "vm_template":"0",
      "shutdown_action":"shutdown",
      "parents":[
        "frontend"
      ],
      "min_vms":"2",
      "max_vms":"10",
      "cooldown":"240",
      "elasticity_policies":[
        {
          "type":"CHANGE",
          "adjust":"5",
          "expression":"ATT=3",
          "period":"5",
          "period_number":"60",
          "cooldown":"240"
        }
      ],
      "scheduled_policies":[
      ]
    }
  ],
  "shutdown_action":"shutdown"
}'

> POST /service_template HTTP/1.1
> Authorization: Basic b25lYWRtaW46b23lbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: oneflow.server:2474
> Accept: */*
> Content-Length: 771
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 201 Created
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 1990
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT": {
    "TEMPLATE": {
      "BODY": {
        "deployment": "straight",
        "name": "web-application",
        "roles": [
          {
            "scheduled_policies": [
              {
                "adjust": 4,
                "type": "CHANGE",
                "recurrence": "0 2 1-10 * * "
              }
            ],
            "vm_template": 0,
            "name": "frontend",
            "min_vms": 1,
            "max_vms": 4,
            "cardinality": 1,
            "cooldown": 30,
            "shutdown_action": "shutdown",
            "elasticity_policies": [
              {
                "expression": "CUSTOM_ATT>40",
                "adjust": 20,
                "min_adjust_step": 1,
                "cooldown": 30,
                "period": 3,
                "period_number": 30,
                "type": "PERCENTAGE_CHANGE"
              }
            ]
          },
          {
            "scheduled_policies": [

            ],
            "vm_template": 0,
            "name": "worker",
            "min_vms": 2,
            "max_vms": 10,
            "cardinality": 2,
            "parents": [
              "frontend"
            ],
            "cooldown": 240,
            "shutdown_action": "shutdown",
            "elasticity_policies": [
              {
                "expression": "ATT=3",
                "adjust": 5,
                "cooldown": 240,
                "period": 5,
                "period_number": 60,
                "type": "CHANGE"
              }
            ]
          }
        ],
        "shutdown_action": "shutdown"
      }
    },
    "TYPE": "101",
    "GNAME": "oneadmin",
    "NAME": "web-application",
    "GID": "0",
    "ID": "4",
    "UNAME": "oneadmin",
    "PERMISSIONS": {
      "OWNER_A": "0",
      "OWNER_M": "1",
      "OWNER_U": "1",
      "OTHER_A": "0",
      "OTHER_M": "0",
      "OTHER_U": "0",
      "GROUP_A": "0",
      "GROUP_M": "0",
      "GROUP_U": "0"
    },
    "UID": "0"
  }

Get Detailed Information of a Given Service Template¶

Method	URL	Meaning / Entity Body	Response
GET	`/service_template/<id>`	Show the `SERVICE_TEMPLATE` resource identified by <id>	200 OK: A JSON representation of the collection in the HTTP body.

curl -u 'oneadmin:password' http://127.0.0.1:2474/service_template/4 -v

> GET /service_template/4 HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 1990
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT": {
    "TEMPLATE": {
      "BODY": {
        "deployment": "straight",
        "name": "web-application",
        "roles": [
          {
            "scheduled_policies": [
              {
                "adjust": 4,
                "type": "CHANGE",
                "recurrence": "0 2 1-10 * * "
              }
            ],
            "vm_template": 0,
            ...

List the Available Service Templates¶

Method	URL	Meaning / Entity Body	Response
GET	`/service_template`	List the contents of the `SERVICE_TEMPLATE` collection.	200 OK: A JSON representation of the collection in the HTTP body.

curl -u 'oneadmin:password' http://127.0.0.1:2474/service_template -v

> GET /service_template HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 6929
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT_POOL": {
    "DOCUMENT": [
      {
        "TEMPLATE": {
          "BODY": {
            "deployment": "straight",
            "name": "web-server",
            "roles": [
              {
                "scheduled_policies": [
                  {
                    "adjust": 4,
                    "type": "CHANGE",
                    "recurrence": "0 2 1-10 * * "
                  }
                ],
                "vm_template": 0,
                "name": "frontend",
                "min_vms": 1,
                "max_vms": 4,
                "cardinality": 1,
                "cooldown": 30,
                "shutdown_action": "shutdown",
                "elasticity_policies": [
                  {
                ...

Update a Given Template¶

Method	URL	Meaning / Entity Body	Response
PUT	`/service_template/<id>`	Update the `SERVICE_TEMPLATE` resource identified by <id>.	200 OK:

curl http://127.0.0.1:2474/service_template/4 -u 'oneadmin:password' -v -X PUT --data '{
  "name":"web-application",
  "deployment":"straight",
  "roles":[
    {
      "name":"frontend",
      "cardinality":"1",
      "vm_template":"0",
      "shutdown_action":"shutdown-hard",
      "min_vms":"1",
      "max_vms":"4",
      "cooldown":"30",
      "elasticity_policies":[
        {
          "type":"PERCENTAGE_CHANGE",
          "adjust":"20",
          "min_adjust_step":"1",
          "expression":"CUSTOM_ATT>40",
          "period":"3",
          "period_number":"30",
          "cooldown":"30"
        }
      ],
      "scheduled_policies":[
        {
          "type":"CHANGE",
          "adjust":"4",
          "recurrence":"0 2 1-10 * * "
        }
      ]
    },
    {
      "name":"worker",
      "cardinality":"2",
      "vm_template":"0",
      "shutdown_action":"shutdown",
      "parents":[
        "frontend"
      ],
      "min_vms":"2",
      "max_vms":"10",
      "cooldown":"240",
      "elasticity_policies":[
        {
          "type":"CHANGE",
          "adjust":"5",
          "expression":"ATT=3",
          "period":"5",
          "period_number":"60",
          "cooldown":"240"
        }
      ],
      "scheduled_policies":[
      ]
    }
  ],
  "shutdown_action":"shutdown"
}'

> PUT /service_template/4 HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
> Content-Length: 1219
> Content-Type: application/x-www-form-urlencoded
> Expect: 100-continue
>
* Done waiting for 100-continue
< HTTP/1.1 200 OK
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 1995
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT": {
    "TEMPLATE": {
      "BODY": {
        "deployment": "straight",
        "name": "web-application",
        "roles": [
          {
            "scheduled_policies": [
              {
                "adjust": 4,
                "type": "CHANGE",
                "recurrence": "0 2 1-10 * * "
              }
            ],
            "vm_template": 0,
            "name": "frontend",
            "min_vms": 1,
            "max_vms": 4,
            "cardinality": 1,
            "cooldown": 30,
            "shutdown_action": "shutdown-hard",
            ...

Instantiate a Given Template¶

Method	URL	Meaning / Entity Body	Response
POST	`/service_template/<id>/action`	Perform an action on the `SERVICE_TEMPLATE` resource identified by <id>. Available actions: `instantiate`, `chown`, `chgrp`, `chmod`.	201:

curl http://127.0.0.1:2474/service_template/4/action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"instantiate"
  }
}'

> POST /service_template/4/action HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
> Content-Length: 49
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 201 Created
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 2015
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT": {
    "TEMPLATE": {
      "BODY": {
        "deployment": "straight",
        "name": "web-application",
        "roles": [
          {
            "scheduled_policies": [
              {
                "adjust": 4,
                "type": "CHANGE",
                "recurrence": "0 2 1-10 * * "
              }
            ],
            "vm_template": 0,

Additional parameters can be passed using the merge_template inside the params. For example, if we want to change the name when instantiating:

curl http://127.0.0.1:2474/service_template/4/action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"instantiate",
    "params": {"merge_template":{"name":"new_name"}}
  }
}'

The following attributes can be also passed using the merge_template:

network_values
custom_attrs_values
vm_template_contents

For example, instantiate a service template with custom VM capacity

curl http://127.0.0.1:2474/service_template/4/action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"instantiate",
    "params":{"merge_template":{"vm_template_contents":"HOT_RESIZE=[CPU_HOT_ADD_ENABLED=\"YES\",\nMEMORY_HOT_ADD_ENABLED=\"YES\"]\nMEMORY_RESIZE_MODE=\"BALLOONING\"\nVCPU_MAX= \"2\"\nMEMORY_MAX=\"128\""}}
  }
}'

Delete a Given Template¶

Method	URL	Meaning / Entity Body	Response
DELETE	`/service_template/<id>`	Delete the `SERVICE_TEMPLATE` resource identified by <id>.	204:

curl http://127.0.0.1:2474/service_template/4 -u 'oneadmin:password' -v -X DELETE

> DELETE /service_template/3 HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
>
< HTTP/1.1 204 No Content
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 0
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys

Get Detailed Information of a Given Service¶

Method	URL	Meaning / Entity Body	Response
GET	`/service/<id>`	Show the `SERVICE` resource identified by <id>.	200 OK: A JSON representation of the collection in the HTTP body.

curl http://127.0.0.1:2474/service/5 -u 'oneadmin:password' -v

> GET /service/5 HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 11092
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT": {
    "TEMPLATE": {
      "BODY": {
        "deployment": "straight",
        "name": "web-application",
        "roles": [
          {
            "scheduled_policies": [
              {
                "adjust": 4,
                "last_eval": 1374676803,
                "type": "CHANGE",
                "recurrence": "0 2 1-10 * * "
              }
            ],
            "vm_template": 0,
            "disposed_nodes": [

            ],
            "name": "frontend",
            "min_vms": 1,
            "nodes": [
              {
                "deploy_id": 12,
                "vm_info": {
                  "VM": {
                    "GNAME": "oneadmin",
                    "NAME": "frontend_0_(service_5)",
                    "GID": "0",
                    "ID": "12",
                    "UNAME": "oneadmin",
                    "UID": "0",
                  }
                }
              }
            ],
            "last_vmname": 1,
            "max_vms": 4,
            "cardinality": 1,
            "cooldown": 30,
            "shutdown_action": "shutdown-hard",
            "state": "2",
            "elasticity_policies": [
              {
                "expression": "CUSTOM_ATT>40",
                "true_evals": 0,
                "adjust": 20,
                "min_adjust_step": 1,
                "last_eval": 1374676803,
                "cooldown": 30,
                "expression_evaluated": "CUSTOM_ATT[--] > 40",
                "period": 3,
                "period_number": 30,
                "type": "PERCENTAGE_CHANGE"
              }
            ]
          },
          {
            "scheduled_policies": [

            ],
            "vm_template": 0,
            "disposed_nodes": [

            ],
            "name": "worker",
            "min_vms": 2,
            "nodes": [
              {
                "deploy_id": 13,
                "vm_info": {
                  "VM": {
                    "GNAME": "oneadmin",
                    "NAME": "worker_0_(service_5)",
                    "GID": "0",
                    "ID": "13",
                    "UNAME": "oneadmin",
                    "UID": "0",
                  }
                }
              },
              {
                "deploy_id": 14,
                "vm_info": {
                  "VM": {
                    "GNAME": "oneadmin",
                    "GID": "0",
                    "ID": "14",
                    "UNAME": "oneadmin",
                    "UID": "0",
                  }
                }
              }
            ],
            "last_vmname": 2,
            "max_vms": 10,
            "cardinality": 2,
            "parents": [
              "frontend"
            ],
            "cooldown": 240,
            "shutdown_action": "shutdown",
            "state": "2",
            "elasticity_policies": [
              {
                "expression": "ATT=3",
                "true_evals": 0,
                "adjust": 5,
                "last_eval": 1374676803,
                "cooldown": 240,
                "expression_evaluated": "ATT[--] = 3",
                "period": 5,
                "period_number": 60,
                "type": "CHANGE"
              }
            ]
          }
        ],
        "log": [
          {
            "message": "New state: DEPLOYING",
            "severity": "I",
            "timestamp": 1374676345
          },
          {
            "message": "New state: RUNNING",
            "severity": "I",
            "timestamp": 1374676406
          }
        ],
        "shutdown_action": "shutdown",
        "state": 2
      }
    },
    "TYPE": "100",
    "GNAME": "oneadmin",
    "NAME": "web-application",
    "GID": "0",
    "ID": "5",
    "UNAME": "oneadmin",
    "PERMISSIONS": {
      "OWNER_A": "0",
      "OWNER_M": "1",
      "OWNER_U": "1",
      "OTHER_A": "0",
      "OTHER_M": "0",
      "OTHER_U": "0",
      "GROUP_A": "0",
      "GROUP_M": "0",
      "GROUP_U": "0"
    },
    "UID": "0"
  }

List the Available Services¶

Method	URL	Meaning / Entity Body	Response
GET	`/service`	List the contents of the `SERVICE` collection.	200 OK: A JSON representation of the collection in the HTTP body.

curl http://127.0.0.1:2474/service -u 'oneadmin:password' -v

> GET /service HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 12456
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT_POOL": {
    "DOCUMENT": [
      {
        "TEMPLATE": {
          "BODY": {
            "deployment": "straight",
            "name": "web-application",
            "roles": [
              {
                "scheduled_policies": [
                  {
                    "adjust": 4,
                    "last_eval": 1374676986,
                    "type": "CHANGE",
                    "recurrence": "0 2 1-10 * * "
                  }
                ],
                ...

Perform an Action on a Given Service¶

Method	URL	Meaning / Entity Body	Response
POST	`/service/<id>/action`	Perform an action on the `SERVICE` resource identified by <id>.	201:

Available actions:

recover: Recover a failed service, cleaning the failed VMs.
- From FAILED_DEPLOYING continues deploying the Service.
- From FAILED_SCALING continues scaling the Service.
- From FAILED_UNDEPLOYING continues shutting down the Service.
- From COOLDOWN the Service is set to running ignoring the cooldown duration.
- "delete" : true in params will delete the service and its VMs no matter in what state the service is
chown
chmod
chgrp

curl http://127.0.0.1:2474/service/5/action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"chgrp",
    "params" : {
      "group_id" : 2
    }
  }
}'

Perform an Action on All the VMs of a Given Role¶

Method	URL	Meaning / Entity Body	Response
POST	`/service/<id>/role/<name>/action`	Perform an action on all the Virtual Machines belonging to the `ROLE` identified by <name> of the `SERVICE` resource identified by <id>.	201:

You can use this call to perform a VM action on all the Virtual Machines belonging to a role. For example, if you want to suspend the Virtual Machines of the worker Role:

These are the commands that can be performed:

shutdown
shutdown-hard
undeploy
undeploy-hard
hold
release
stop
suspend
resume
boot
delete
delete-recreate
reboot
reboot-hard
poweroff
poweroff-hard
snapshot-create
snapshot-revert
snapshot-delete
disk-snapshot-create
disk-snapshot-revert
disk-snapshot-delete

Instead of performing the action immediately on all the VMs, you can perform it on small groups of VMs with these options:

period: seconds between each group of actions.
number: number of VMs to apply the action to each period.

curl http://127.0.0.1:2474/service/5/role/frontend/action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"stop",
    "params" : {
      "period" : 60,
      "number" : 2
    }
  }
}'

Add a role to a running service¶

Method	URL	Meaning / Entity Body	Response
POST	`/service/<id>/role_action`	Add or remove a role from running service.	204:

curl http://127.0.0.1:2474/service/5/role_action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"add_role",
    "params" : {
      "role" : '{
            "name": "NEW_ROLE",
            "cardinality": 1,
            "vm_template": 0,
            "min_vms": 1,
            "max_vms": 2,
            "elasticity_policies": [],
            "scheduled_policies": []
      }'
    }
  }
}'

Remove a role from a running service¶

Method	URL	Meaning / Entity Body	Response
POST	`/service/<id>/role_action`	Add or remove a role from running service.	204:

curl http://127.0.0.1:2474/service/5/role_action -u 'oneadmin:password' -v -X POST --data '{
  "action": {
    "perform":"remove_role",
    "params" : {
      "role" : 'NEW_ROLE'
    }
  }
}'

Update a service¶

Method	URL	Meaning / Entity Body	Response
PUT	`/service/<id>`	Update the `SERVICE` resource identified by <id>.	200 OK:

Append can be used to append information to the service, in this case the request body must include the following information:

append: set to true.
template: JSON representation of the template to append.

curl http://127.0.0.1:2474/service/4 -u 'oneadmin:password' -v -X PUT --data '{
  "name":"web-application",
  "deployment":"straight",
  "roles":[
    {
      "name":"frontend",
      "cardinality":"1",
      "vm_template":"0",
      "shutdown_action":"shutdown-hard",
      "min_vms":"1",
      "max_vms":"4",
      "cooldown":"30",
      "elasticity_policies":[
        {
          "type":"PERCENTAGE_CHANGE",
          "adjust":"20",
          "min_adjust_step":"1",
          "expression":"CUSTOM_ATT>40",
          "period":"3",
          "period_number":"30",
          "cooldown":"30"
        }
      ],
      "scheduled_policies":[
        {
          "type":"CHANGE",
          "adjust":"4",
          "recurrence":"0 2 1-10 * * "
        }
      ]
    },
    {
      "name":"worker",
      "cardinality":"2",
      "vm_template":"0",
      "shutdown_action":"shutdown",
      "parents":[
        "frontend"
      ],
      "min_vms":"2",
      "max_vms":"10",
      "cooldown":"240",
      "elasticity_policies":[
        {
          "type":"CHANGE",
          "adjust":"5",
          "expression":"ATT=3",
          "period":"5",
          "period_number":"60",
          "cooldown":"240"
        }
      ],
      "scheduled_policies":[
      ]
    }
  ],
  "shutdown_action":"shutdown"
}'

> PUT /service/4 HTTP/1.1
> Authorization: Basic b25lYWRtaW46b3Blbm5lYnVsYQ==
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: 127.0.0.1:2474
> Accept: */*
> Content-Length: 1219
> Content-Type: application/x-www-form-urlencoded
> Expect: 100-continue
>
* Done waiting for 100-continue
< HTTP/1.1 200 OK
< Content-Type: text/html;charset=utf-8
< X-XSS-Protection: 1; mode=block
< Content-Length: 1995
< X-Frame-Options: sameorigin
< Connection: keep-alive
< Server: thin 1.2.8 codename Black Keys
<
{
  "DOCUMENT": {
    "TEMPLATE": {
      "BODY": {
        "deployment": "straight",
        "name": "web-application",
        "roles": [
          {
            "scheduled_policies": [
              {
                "adjust": 4,
                "type": "CHANGE",
                "recurrence": "0 2 1-10 * * "
              }
            ],
            "vm_template": 0,
            "name": "frontend",
            "min_vms": 1,
            "max_vms": 4,
            "cardinality": 1,
            "cooldown": 30,
            "shutdown_action": "shutdown-hard",
            ...