​Workflow ​Components

Flow is a container for tasks and and their orchestration logic, as well as labels, variables, inputs, outputs and triggers.

Components of a flow

A flow is a container for tasks, their inputs, outputs, handling errors and overall orchestration logic. It defines the order in which tasks are executed and how they are executed, e.g. sequentially, in parallel, based on upstream task dependencies and their state, etc.

You can define a flow declaratively using a YAML file.

A flow must have:

• identifier (id)
• namespace
• list of tasks

Flows can also have a variety of optional properties, which you can read more about below:

Flow

Flow is a container for tasks and their orchestration logic.

Tasks

Tasks are the steps within a flow.

Namespace

Namespace is a logical grouping of flows.

Execution

Execute your flows and view the outcome.

Variables

Variables are key-value pairs that help reuse some values across tasks.

Inputs

Inputs is a list of dynamic values passed to the flow at runtime.

Outputs

Outputs allow you to pass data between tasks and flows.

Triggers

Trigger is a mechanism that automates the execution of a flow.

Labels

Labels are key-value pairs used to organize flows and executions.

Plugin Defaults

Plugin defaults are a list of default values applied to each task of a certain type within your flow(s).

Subflows

Subflows allow you to build modular and reusable workflow components.

Errors

Allow your flow to continue to operate despite errors.

Retries

Retries handle transient failures in your workflows.

Timeout

Timeout allows you to set a maximum duration for a task run.

Concurrency limits

Control concurrent executions of a given flow.

Descriptions

You can document your flows, inputs, outputs, tasks and triggers by adding a description property.

Disabled flag

The disabled flag is a boolean property that allows you to skip a flow, task or trigger.

States

States control the status of your workflow execution.