V2 API¶

Basics¶

Workbooks¶

type Workbook¶

Workbook resource.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "definition": "HERE GOESWORKBOOK DEFINITION IN MISTRAL DSL v2",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "name": "book",
    "scope": "private",
    "tags": [
        "large",
        "expensive"
    ],
    "updated_at": "1970-01-01T00:00:00.000000"
}

definition¶

Type:	unicode

workbook definition in Mistral v2 DSL

scope¶

Type:	Enum(private, public)

‘private’ or ‘public’

name is immutable. tags is a list of values associated with a workbook that a user can use to group workbooks by some criteria (deployment workbooks, Big Data processing workbooks etc.). Note that name and tags get inferred from workbook definition when Mistral service receives a POST request. So they can’t be changed in another way.

type Workbooks¶

A collection of Workbooks.

Data samples:

Json

{
    "workbooks": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "definition": "HERE GOESWORKBOOK DEFINITION IN MISTRAL DSL v2",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "name": "book",
            "scope": "private",
            "tags": [
                "large",
                "expensive"
            ],
            "updated_at": "1970-01-01T00:00:00.000000"
        }
    ]
}

GET /v2/workbooks¶

Return a list of workbooks.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: asc. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. definition (unicode) – Optional. Keep only resources with a specific definition. tags (unicode) – Optional. Keep only resources containing specific tags. scope (Enum(private, public)) – Optional. Keep only resources with a specific scope. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date.

Return type:

Workbooks

GET /v2/workbooks¶

Return the named workbook.

Parameters:	name (unicode) – Name of workbook to retrieve
Return type:	Workbook

POST /v2/workbooks¶

Create a new workbook.

PUT /v2/workbooks¶

Update a workbook.

DELETE /v2/workbooks¶

Delete the named workbook.

Parameters:	name (unicode) – Name of workbook to delete

Workflows¶

type Workflow¶

Workflow resource.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "definition": "HERE GOESWORKFLOW DEFINITION IN MISTRAL DSL v2",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "input": "param1, param2",
    "name": "flow",
    "namespace": "",
    "project_id": "a7eb669e9819420ea4bd1453e672c0a7",
    "scope": "private",
    "tags": [
        "large",
        "expensive"
    ],
    "updated_at": "1970-01-01T00:00:00.000000"
}

definition¶

Type:	unicode

Workflow definition in Mistral v2 DSL

scope¶

Type:	Enum(private, public)

‘private’ or ‘public’

name is immutable. tags is a list of values associated with a workflow that a user can use to group workflows by some criteria. Note that name and tags get inferred from workflow definition when Mistral service receives a POST request. So they can’t be changed in another way.

type Workflows¶

A collection of workflows.

Data samples:

Json

{
    "next": "http://localhost:8989/v2/workflows?sort_keys=id,name&sort_dirs=asc,desc&limit=10&marker=123e4567-e89b-12d3-a456-426655440000",
    "workflows": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "definition": "HERE GOESWORKFLOW DEFINITION IN MISTRAL DSL v2",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "input": "param1, param2",
            "name": "flow",
            "namespace": "",
            "project_id": "a7eb669e9819420ea4bd1453e672c0a7",
            "scope": "private",
            "tags": [
                "large",
                "expensive"
            ],
            "updated_at": "1970-01-01T00:00:00.000000"
        }
    ]
}

GET /v2/workflows¶

Return a list of workflows.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: asc. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. namespace (unicode) – Optional. Keep only resources with a specific namespace input (unicode) – Optional. Keep only resources with a specific input. definition (unicode) – Optional. Keep only resources with a specific definition. tags (unicode) – Optional. Keep only resources containing specific tags. scope (Enum(private, public)) – Optional. Keep only resources with a specific scope. project_id (uuid) – Optional. The same as the requester project_id or different if the scope is public. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date. all_projects (bool) – Optional. Get resources of all projects.

Return type:

Workflows

GET /v2/workflows¶

Return the named workflow.

Parameters:	identifier (unicode) – Name or UUID of the workflow to retrieve. namespace (unicode) – Optional. Namespace of the workflow to retrieve.
Return type:	Workflow

POST /v2/workflows¶

Create a new workflow.

NOTE: The text is allowed to have definitions

of multiple workflows. In this case they all will be created.

Parameters:	namespace – Optional. The namespace to create the workflow in. Workflows with the same name can be added to a given project if are in two different namespaces.

PUT /v2/workflows¶

Update one or more workflows.

Parameters:	identifier – Optional. If provided, it’s UUID of a workflow. Only one workflow can be updated with identifier param. namespace – Optional. If provided int’s the namespace of the workflow/workflows. currently namespace cannot be changed.

The text is allowed to have definitions of multiple workflows. In this case they all will be updated.

DELETE /v2/workflows¶

Delete a workflow.

Parameters:	identifier (unicode) – Name or ID of workflow to delete. namespace (unicode) – Optional. Namespace of the workflow to delete.

Actions¶

type Action¶

Action resource.

NOTE: name is immutable. Note that name and description get inferred from action definition when Mistral service receives a POST request. So they can’t be changed in another way.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "definition": "HERE GOES ACTION DEFINITION IN MISTRAL DSL v2",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "name": "flow",
    "scope": "private",
    "tags": [
        "large",
        "expensive"
    ],
    "updated_at": "1970-01-01T00:00:00.000000"
}

type Actions¶

A collection of Actions.

Data samples:

Json

{
    "actions": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "definition": "HERE GOES ACTION DEFINITION IN MISTRAL DSL v2",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "name": "flow",
            "scope": "private",
            "tags": [
                "large",
                "expensive"
            ],
            "updated_at": "1970-01-01T00:00:00.000000"
        }
    ],
    "next": "http://localhost:8989/v2/actions?sort_keys=id,name&sort_dirs=asc,desc&limit=10&marker=123e4567-e89b-12d3-a456-426655440000"
}

GET /v2/actions¶

Return all actions.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: name. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: asc. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. scope (Enum(private, public)) – Optional. Keep only resources with a specific scope. definition (unicode) – Optional. Keep only resources with a specific definition. is_system (unicode) – Optional. Keep only system actions or ad-hoc actions (if False). input (unicode) – Optional. Keep only resources with a specific input. description (unicode) – Optional. Keep only resources with a specific description. tags (unicode) – Optional. Keep only resources containing specific tags. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date.

Return type:

Actions

GET /v2/actions¶

Return the named action.

Parameters:	identifier (unicode) – ID or name of the Action to get.
Return type:	Action

POST /v2/actions¶

Create a new action.

NOTE: This text is allowed to have definitions

of multiple actions. In this case they all will be created.

PUT /v2/actions¶

Update one or more actions.

Parameters:	identifier – Optional. If provided, it’s UUID or name of an action. Only one action can be updated with identifier param.

NOTE: This text is allowed to have definitions

of multiple actions. In this case they all will be updated.

DELETE /v2/actions¶

Delete the named action.

Parameters:	identifier (unicode) – Name or UUID of the action to delete.

Executions¶

type Execution¶

Execution resource.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "description": "this is the first execution.",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "input": "{}",
    "output": "{}",
    "params": "{\"env\": {\"k2\": 123, \"k1\": \"abc\"}}",
    "state": "SUCCESS",
    "updated_at": "1970-01-01T00:00:00.000000",
    "workflow_id": "123e4567-e89b-12d3-a456-426655441111",
    "workflow_name": "flow",
    "workflow_namespace": "some_namespace"
}

description¶

Type:	unicode

description of workflow execution.

id¶

Type:	unicode

id is immutable and auto assigned.

input¶

Type:	json

input is a JSON structure containing workflow input values.

output¶

Type:	json

output is a workflow output.

params¶

Type:	json

params define workflow type specific parameters. For example, reverse workflow takes one parameter ‘task_name’ that defines a target task.

state¶

Type:	unicode

state can be one of: IDLE, RUNNING, SUCCESS, ERROR, PAUSED

state_info¶

Type:	unicode

an optional state information string

task_execution_id¶

Type:	unicode

reference to the parent task execution

workflow_id¶

Type:	unicode

reference to workflow ID

workflow_name¶

Type:	unicode

reference to workflow definition

workflow_namespace¶

Type:	unicode

reference to workflow namespace. The workflow namespace is also saved under params and passed to all sub-workflow executions. When looking for the next sub-workflow to run, The correct workflow will be found by name and namespace, where the namespace can be the workflow namespace or the default namespace. Workflows in the same namespace as the top workflow will be given a higher priority.

type Executions¶

A collection of Execution resources.

Data samples:

Json

{
    "executions": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "description": "this is the first execution.",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "input": "{}",
            "output": "{}",
            "params": "{\"env\": {\"k2\": 123, \"k1\": \"abc\"}}",
            "state": "SUCCESS",
            "updated_at": "1970-01-01T00:00:00.000000",
            "workflow_id": "123e4567-e89b-12d3-a456-426655441111",
            "workflow_name": "flow",
            "workflow_namespace": "some_namespace"
        }
    ],
    "next": "http://localhost:8989/v2/executions?sort_keys=id,workflow_name&sort_dirs=asc,desc&limit=10&marker=123e4567-e89b-12d3-a456-426655440000"
}

GET /v2/executions¶

Return all Executions.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. workflow_name (unicode) – Optional. Keep only resources with a specific workflow name. workflow_id (uuid) – Optional. Keep only resources with a specific workflow ID. description (unicode) – Optional. Keep only resources with a specific description. params (json) – Optional. Keep only resources with specific parameters. task_execution_id (uuid) – Optional. Keep only resources with a specific task execution ID. state (Enum(IDLE, RUNNING, SUCCESS, ERROR, PAUSED, CANCELLED)) – Optional. Keep only resources with a specific state. state_info (unicode) – Optional. Keep only resources with specific state information. input (json) – Optional. Keep only resources with a specific input. output (json) – Optional. Keep only resources with a specific output. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date. include_output (bool) – Optional. Include the output for all executions in the list. project_id (uuid) – Optional. Only get exectuions belong to the project. Admin required. all_projects (bool) – Optional. Get resources of all projects. Admin required.

Return type:

Executions

GET /v2/executions¶

Return the specified Execution.

Parameters:	id (unicode) – UUID of execution to retrieve.
Return type:	Execution

POST /v2/executions¶

Create a new Execution.

Parameters:	wf_ex (Execution) – Execution object with input content.
Return type:	Execution

PUT /v2/executions¶

Update the specified workflow execution.

Parameters:	id (unicode) – UUID of execution to update. wf_ex (Execution) – Execution object.
Return type:	Execution

DELETE /v2/executions¶

Delete the specified Execution.

Parameters:	id (unicode) – UUID of execution to delete.

Tasks¶

When a workflow starts Mistral creates an execution. It in turn consists of a set of tasks. So Task is an instance of a task described in a Workflow that belongs to a particular execution.

type Task¶

Task resource.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "name": "task",
    "processed": true,
    "published": "{\"key\": \"value\"}",
    "reset": true,
    "result": "task result",
    "runtime_context": "{\"triggered_by\": [{\"event\": \"on-success\", \"task_id\": \"123-123-123\"}]}",
    "state": "SUCCESS",
    "updated_at": "1970-01-01T00:00:00.000000",
    "workflow_execution_id": "123e4567-e89b-12d3-a456-426655440000",
    "workflow_id": "123e4567-e89b-12d3-a456-426655441111",
    "workflow_name": "flow"
}

state¶

Type:	unicode

state can take one of the following values: IDLE, RUNNING, SUCCESS, ERROR, DELAYED

state_info¶

Type:	unicode

an optional state information string

type Tasks¶

A collection of tasks.

Data samples:

Json

{
    "tasks": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "name": "task",
            "processed": true,
            "published": "{\"key\": \"value\"}",
            "reset": true,
            "result": "task result",
            "runtime_context": "{\"triggered_by\": [{\"event\": \"on-success\", \"task_id\": \"123-123-123\"}]}",
            "state": "SUCCESS",
            "updated_at": "1970-01-01T00:00:00.000000",
            "workflow_execution_id": "123e4567-e89b-12d3-a456-426655440000",
            "workflow_id": "123e4567-e89b-12d3-a456-426655441111",
            "workflow_name": "flow"
        }
    ]
}

GET /v2/tasks¶

Return all tasks.

Where project_id is the same as the requester or project_id is different but the scope is public.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. workflow_name (unicode) – Optional. Keep only resources with a specific workflow name. workflow_id (uuid) – Optional. Keep only resources with a specific workflow ID. workflow_execution_id (uuid) – Optional. Keep only resources with a specific workflow execution ID. state (Enum(IDLE, RUNNING, SUCCESS, ERROR, DELAYED)) – Optional. Keep only resources with a specific state. state_info (unicode) – Optional. Keep only resources with specific state information. result (unicode) – Optional. Keep only resources with a specific result. published (json) – Optional. Keep only resources with specific published content. processed (bool) – Optional. Keep only resources which have been processed or not. reset (bool) – Optional. Keep only resources which have been reset or not. env (json) – Optional. Keep only resources with a specific environment. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date.

Return type:

Tasks

GET /v2/tasks¶

Return the specified task.

Parameters:	id (unicode) – UUID of task to retrieve
Return type:	Task

PUT /v2/tasks¶

Update the specified task execution.

Parameters:	id (unicode) – Task execution ID. task (Task) – Task execution object.
Return type:	Task

GET /v2/executions¶

Return all tasks within the execution.

Where project_id is the same as the requester or project_id is different but the scope is public.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. workflow_name (unicode) – Optional. Keep only resources with a specific workflow name. workflow_id (uuid) – Optional. Keep only resources with a specific workflow ID. workflow_execution_id (uuid) – Optional. Keep only resources with a specific workflow execution ID. state (Enum(IDLE, RUNNING, SUCCESS, ERROR, DELAYED)) – Optional. Keep only resources with a specific state. state_info (unicode) – Optional. Keep only resources with specific state information. result (unicode) – Optional. Keep only resources with a specific result. published (json) – Optional. Keep only resources with specific published content. processed (bool) – Optional. Keep only resources which have been processed or not. reset (bool) – Optional. Keep only resources which have been reset or not. env (json) – Optional. Keep only resources with a specific environment. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date.

Return type:

Tasks

Action Executions¶

When a Task starts Mistral creates a set of Action Executions. So Action Execution is an instance of an action call described in a Workflow Task that belongs to a particular execution.

type ActionExecution¶

ActionExecution resource.

Data samples:

Json

{
    "accepted": true,
    "created_at": "1970-01-01T00:00:00.000000",
    "description": "My running action",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "input": "{\"first_name\": \"John\", \"last_name\": \"Doe\"}",
    "name": "std.echo",
    "output": "{\"some_output\": \"Hello, John Doe!\"}",
    "params": "{\"save_result\": true, \"run_sync\": false}",
    "state": "SUCCESS",
    "state_info": "SUCCESS",
    "tags": [
        "foo",
        "fee"
    ],
    "task_execution_id": "343e45623-e89b-12d3-a456-426655440090",
    "task_name": "task1",
    "updated_at": "1970-01-01T00:00:00.000000",
    "workflow_name": "flow"
}

type ActionExecutions¶

A collection of action_executions.

Data samples:

Json

{
    "action_executions": [
        {
            "accepted": true,
            "created_at": "1970-01-01T00:00:00.000000",
            "description": "My running action",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "input": "{\"first_name\": \"John\", \"last_name\": \"Doe\"}",
            "name": "std.echo",
            "output": "{\"some_output\": \"Hello, John Doe!\"}",
            "params": "{\"save_result\": true, \"run_sync\": false}",
            "state": "SUCCESS",
            "state_info": "SUCCESS",
            "tags": [
                "foo",
                "fee"
            ],
            "task_execution_id": "343e45623-e89b-12d3-a456-426655440090",
            "task_name": "task1",
            "updated_at": "1970-01-01T00:00:00.000000",
            "workflow_name": "flow"
        }
    ]
}

GET /v2/action_executions¶

Return all tasks within the execution.

Where project_id is the same as the requester or project_id is different but the scope is public.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. workflow_name (unicode) – Optional. Keep only resources with a specific workflow name. task_name (unicode) – Optional. Keep only resources with a specific task name. task_execution_id (uuid) – Optional. Keep only resources within a specific task execution. state (unicode) – Optional. Keep only resources with a specific state. state_info (unicode) – Optional. Keep only resources with specific state information. accepted (bool) – Optional. Keep only resources which have been accepted or not. input (json) – Optional. Keep only resources with a specific input. output (json) – Optional. Keep only resources with a specific output. params (json) – Optional. Keep only resources with specific parameters. description (unicode) – Optional. Keep only resources with a specific description. tags (unicode) – Optional. Keep only resources containing specific tags. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date. include_output (bool) – Optional. Include the output for all executions in the list

Return type:

ActionExecutions

GET /v2/action_executions¶

Return the specified action_execution.

Parameters:	id (unicode) – UUID of action execution to retrieve
Return type:	ActionExecution

POST /v2/action_executions¶

Create new action_execution.

Parameters:	action_ex (ActionExecution) – Action to execute
Return type:	ActionExecution

PUT /v2/action_executions¶

Update the specified action_execution.

Parameters:	id (unicode) – UUID of action execution to update action_ex (ActionExecution) – Action execution for update
Return type:	ActionExecution

DELETE /v2/action_executions¶

Delete the specified action_execution.

Parameters:	id (unicode) – UUID of action execution to delete

GET /v2/tasks¶

Return all tasks within the execution.

Where project_id is the same as the requester or project_id is different but the scope is public.

Parameters:

task_execution_id (uuid) – Keep only resources within a specific task execution. marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (uniquelist) – Optional. Keep only resources with a specific name. workflow_name (unicode) – Optional. Keep only resources with a specific workflow name. task_name (unicode) – Optional. Keep only resources with a specific task name. state (unicode) – Optional. Keep only resources with a specific state. state_info (unicode) – Optional. Keep only resources with specific state information. accepted (bool) – Optional. Keep only resources which have been accepted or not. input (json) – Optional. Keep only resources with a specific input. output (json) – Optional. Keep only resources with a specific output. params (json) – Optional. Keep only resources with specific parameters. description (unicode) – Optional. Keep only resources with a specific description. tags (unicode) – Optional. Keep only resources containing specific tags. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date. include_output (bool) – Optional. Include the output for all executions in the list

Return type:

ActionExecutions

GET /v2/tasks¶

Return the specified action_execution.

Parameters:	task_execution_id (unicode) – Task execution UUID action_ex_id (unicode) – Action execution UUID
Return type:	ActionExecution

Cron Triggers¶

Cron trigger is an object that allows to run Mistral workflows according to a time pattern (Unix crontab patterns format). Once a trigger is created it will run a specified workflow according to its properties: pattern, first_execution_time and remaining_executions.

type CronTrigger¶

CronTrigger resource.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "name": "my_trigger",
    "pattern": "* * * * *",
    "remaining_executions": 42,
    "scope": "private",
    "updated_at": "1970-01-01T00:00:00.000000",
    "workflow_id": "123e4567-e89b-12d3-a456-426655441111",
    "workflow_input": "{}",
    "workflow_name": "my_wf",
    "workflow_params": "{}"
}

type CronTriggers¶

A collection of cron triggers.

Data samples:

Json

{
    "cron_triggers": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "name": "my_trigger",
            "pattern": "* * * * *",
            "remaining_executions": 42,
            "scope": "private",
            "updated_at": "1970-01-01T00:00:00.000000",
            "workflow_id": "123e4567-e89b-12d3-a456-426655441111",
            "workflow_input": "{}",
            "workflow_name": "my_wf",
            "workflow_params": "{}"
        }
    ]
}

GET /v2/cron_triggers¶

Return all cron triggers.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. workflow_name (unicode) – Optional. Keep only resources with a specific workflow name. workflow_id (uuid) – Optional. Keep only resources with a specific workflow ID. workflow_input (json) – Optional. Keep only resources with a specific workflow input. workflow_params (json) – Optional. Keep only resources with specific workflow parameters. scope (Enum(private, public)) – Optional. Keep only resources with a specific scope. pattern (unicode) – Optional. Keep only resources with a specific pattern. remaining_executions (integer) – Optional. Keep only resources with a specific number of remaining executions. first_execution_time (unicode) – Optional. Keep only resources with a specific time and date of first execution. next_execution_time (unicode) – Optional. Keep only resources with a specific time and date of next execution. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date. all_projects (bool) – Optional. Get resources of all projects.

Return type:

CronTriggers

GET /v2/cron_triggers¶

Returns the named cron_trigger.

Parameters:	name (unicode) – Name of cron trigger to retrieve
Return type:	CronTrigger

POST /v2/cron_triggers¶

Creates a new cron trigger.

Parameters:	cron_trigger (CronTrigger) – Required. Cron trigger structure.
Return type:	CronTrigger

DELETE /v2/cron_triggers¶

Delete cron trigger.

Parameters:	name (unicode) – Name of cron trigger to delete

Environments¶

Environment contains a set of variables which can be used in specific workflow. Using an Environment it is possible to create and map action default values - just provide ‘__actions’ key in ‘variables’. All these variables can be accessed using the Workflow Language with the <% $.__env %> expression.

Example of usage:

workflow:
  tasks:
    task1:
      action: std.echo output=<% $.__env.my_echo_output %>

Example of creating action defaults

...ENV...
"variables": {
  "__actions": {
    "std.echo": {
      "output": "my_output"
    }
  }
},
...ENV...

Note: using CLI, Environment can be created via JSON or YAML file.

type Environment¶

Environment resource.

Data samples:

Json

{
    "created_at": "1970-01-01T00:00:00.000000",
    "description": "example environment entry",
    "id": "123e4567-e89b-12d3-a456-426655440000",
    "name": "sample",
    "scope": "private",
    "updated_at": "1970-01-01T00:00:00.000000",
    "variables": "{\"database\": \"temp\", \"verbose\": true, \"timeout\": 600, \"server\": \"localhost\"}"
}

type Environments¶

A collection of Environment resources.

Data samples:

Json

{
    "environments": [
        {
            "created_at": "1970-01-01T00:00:00.000000",
            "description": "example environment entry",
            "id": "123e4567-e89b-12d3-a456-426655440000",
            "name": "sample",
            "scope": "private",
            "updated_at": "1970-01-01T00:00:00.000000",
            "variables": "{\"database\": \"temp\", \"verbose\": true, \"timeout\": 600, \"server\": \"localhost\"}"
        }
    ]
}

GET /v2/environments¶

Return all environments.

Where project_id is the same as the requester or project_id is different but the scope is public.

Parameters:

marker (uuid) – Optional. Pagination marker for large data sets. limit (int) – Optional. Maximum number of resources to return in a single result. Default value is None for backward compatibility. sort_keys (uniquelist) – Optional. Columns to sort results by. Default: created_at, which is backward compatible. sort_dirs (list) – Optional. Directions to sort corresponding to sort_keys, “asc” or “desc” can be chosen. Default: desc. The length of sort_dirs can be equal or less than that of sort_keys. fields (uniquelist) – Optional. A specified list of fields of the resource to be returned. ‘id’ will be included automatically in fields if it’s provided, since it will be used when constructing ‘next’ link. name (unicode) – Optional. Keep only resources with a specific name. description (unicode) – Optional. Keep only resources with a specific description. variables (json) – Optional. Keep only resources with specific variables. scope (Enum(private, public)) – Optional. Keep only resources with a specific scope. created_at (unicode) – Optional. Keep only resources created at a specific time and date. updated_at (unicode) – Optional. Keep only resources with specific latest update time and date.

Return type:

Environments

GET /v2/environments¶

Return the named environment.

Parameters:	name (unicode) – Name of environment to retrieve
Return type:	Environment

POST /v2/environments¶

Create a new environment.

Parameters:	env (Environment) – Required. Environment structure to create
Return type:	Environment

PUT /v2/environments¶

Update an environment.

Parameters:	env (Environment) – Required. Environment structure to update
Return type:	Environment

DELETE /v2/environments¶

Delete the named environment.

Parameters:	name (unicode) – Name of environment to delete

Services¶

Through service management API, system administrator or operator can retrieve Mistral services information of the system, including service group and service identifier. The internal implementation of this feature make use of tooz library, which needs coordinator backend(the most commonly used at present is Zookeeper) installed, please refer to tooz official documentation for more detailed instruction.

There are three service groups according to Mistral architecture currently, namely api_group, engine_group and executor_group. The service identifier contains name of the host the service is running on and the process identifier of the service on that host.

type Service¶

Service resource.

Data samples:

Json

{
    "name": "host1_1234",
    "type": "executor_group"
}

type Services¶

A collection of Services.

Data samples:

Json

{
    "services": [
        {
            "name": "host1_1234",
            "type": "executor_group"
        }
    ]
}

GET /v2/services¶

Return all services.

Return type:	Services

Validation¶

Validation endpoints allow to check correctness of workbook, workflow and ad-hoc action Workflow Language without having to upload them into Mistral.

POST /v2/workbooks/validation

Validate workbook content (Workflow Language grammar and semantics).

POST /v2/workflows/validation

Validate workflow content (Workflow Language grammar and semantics).

POST /v2/actions/validation

Validate ad-hoc action content (Workflow Language grammar and semantics).

These endpoints expect workbook, workflow or ad-hoc action text (Workflow Language) correspondingly in a request body.