Hooks Workflow Plugin

Cloudify Utilities: hooks-workflow

This plugin enables to run a workflow as an actionable event(The example demonstrates run an uninstall workflow when install workflow failed).

Firstly, in order to hook an event, Add event handler to /opt/mgmtworker/config/hooks.conf(An example event provided on the example section).

Supported parameters(inputs):

• inputs: passed from cloudify hooks (or first param hooks).
• logger_file: duplicate logger output to separate file.
• client_config: custom credentials for manager, by default is not required for use.
• filter_by: key-value list, where:
  • path: path to field for validate,
  • values: list of possible values
• workflow_for_run: name workflow to run on deployment.
• workflow_params: additional parameter for workflow.

Deployment properties combined for filter_by:

• deployment_inputs: deployment inputs.
• deployment_outputs: deployment outputs.
• deployment_capabilities: deployment capabilities.

Additionally inputs for filter:

• execution_parameters: parameters originaly received for execution.
• is_system_workflow: type workflow, e.g.: True/False.
• blueprint_id: blueprint id.
• tenant_name: tenant name.
• rest_token: rest token.
• workflow_id: workflow id, e.g.: install
• arguments: resulted arguments.
• timestamp: current time stamp.
• deployment_id: deployment id.
• message_type: type of hooks message.
• execution_id: execution id.
• event_type: hooks type, e.g.: workflow_failed.

workflow_params(in the actionable event inputs) can be:

• parameters: Parameters for the workflow execution.
• allow_custom_parameters: Determines whether to allow parameters which weren’t defined in the workflow parameters schema in the blueprint.
• force: Determines whether to force the execution of the workflow in a case where there’s an already running execution for this deployment.
• dry_run: If set to true, no actual actions will be performed. This is a dry run of the execution
• queue: If set, blocked executions will be queued and automatically run when possible
• schedule: A string representing the date and time this workflow should be executed at. If not passed this workflow will be executed immediately.

example:

• Add event handler to /opt/mgmtworker/config/hooks.conf

See the documentation for more information.

hooks:
- event_type: workflow_failed
  implementation: cloudify-utilities-plugin.cloudify_hooks_workflow.tasks.run_workflow
  inputs:
    logger_file: /tmp/workflow_failed.log
    workflow_for_run: uninstall
    workflow_params: {}
    filter_by:
    - path: ["workflow_id"]
      values: ["install"]
    - path: ["deployment_capabilities", "autouninstall", "value"]
      values: [true, "yes"]
  description: A hook for workflow_failed

• Clone cloudify_hooks_workflow folder from Blueprint examples repo.

• check that all deployments with autouninstall prefix uninstalled.

# will be uninstalled after install
cfy install check-failure.yaml -b check1
# will save alive as deployments is not failed
cfy install check-failure.yaml -b check2 -i raise_failure_first=ignore_action
# will be stay failed
cfy install check-failure.yaml -b check3 -i autouninstall=no

For more examples, see hooks workflow examples.