serial-data_passing

Implicit Serial Workflow

Workflow Description

By default, multiple steps in a workflow will be run in parallel if there is no data dependency between the steps. When the input of a step relies on the output of another step, an implicit serial relationshp is created.

This workflow runs a metadata collection plugin step and then an example plugin (in this case using the template plugin) that takes its name input from the fqdn output returned by the metadata plugin. All steps are run via the default deployer, and their success outputs are reported.

Note

This workflow does not require an input file.

Files

• workflow.yaml -- Defines the workflow input schema, the plugins to run and their data relationships, and the output to present to the user

Running the Workflow

Download the Arcaflow engine from: https://github.com/arcalot/arcaflow-engine/releases

Tip

Because this workflow takes no input and uses the default workflow.yaml file name, we do not need to pass any parameters to the arcaflow command.

Run the workflow:

arcaflow

Example output:

output_data:
    example:
        message: Hello, 6db47e48105d!
output_id: success

Workflow Diagram

%% Mermaid markdown workflow
flowchart LR
%% Success path
steps.metadata.disabled-->steps.metadata.disabled.output
steps.metadata.outputs-->steps.metadata.outputs.success
steps.example.enabling-->steps.example.disabled
steps.example.enabling-->steps.example.enabling.resolved
steps.example.enabling-->steps.example.starting
steps.example.disabled-->steps.example.disabled.output
steps.metadata.deploy-->steps.metadata.starting
steps.metadata.outputs.success-->steps.example.starting
steps.example.cancelled-->steps.example.outputs
steps.metadata.enabling-->steps.metadata.enabling.resolved
steps.metadata.enabling-->steps.metadata.starting
steps.metadata.enabling-->steps.metadata.disabled
steps.metadata.running-->steps.metadata.outputs
steps.example.running-->steps.example.outputs
steps.example.starting-->steps.example.starting.started
steps.example.starting-->steps.example.running
steps.metadata.starting-->steps.metadata.starting.started
steps.metadata.starting-->steps.metadata.running
steps.example.outputs-->steps.example.outputs.success
steps.example.outputs.success-->outputs.success
steps.metadata.cancelled-->steps.metadata.outputs
steps.example.deploy-->steps.example.starting

Loading