Flow Editor

Windmill's Flow Editor allows you to build flows with a low-code builder.

Workflows

A workflow is a series of connected tasks, events, or processes that occur automatically to achieve a specific goal. These tasks are organized as a sequence of actions or steps: scripts in the case of Windmill.

Flows Quickstart

4-minute presentation of our Flow editor.

CLI and Local Development

Create scripts and flows without low-code builders.

Architecture and Data Exchange

A workflow is a JSON serializable value in the OpenFlow format.

OpenFlow Spec

OpenFlow is an open standard for defining Flows.

The Flow Editor has the following features which are the subject of specific pages:

Triggering Flows

Trigger flows on-demand, by schedule or on external events.

Flow Editor Components

Details on the flow editor's major components.

Error Handling in Flows

There are four ways to handle errors in Windmill flows.

Branches

Split the execution of the flow based on a condition.

For loops

Iterate a series of tasks.

Error Handler

Configure a script to handle errors.

Trigger Scripts

Trigger flows upon a given event with a dedicated trigger script.

Retries

Re-try a step in case of error.

Concurrency Limits

The Concurrency Limit feature allows you to define concurrency limits for scripts and inline scripts within flows.

Cache for Steps

Re-use a step's previous results.

Step Mocking

When a step is mocked, it will immediately return the mocked value without performing any computation.

Early Stop / Break

Suspend executions within a flow for a specified time.

Approval Steps in Flows

Suspend a flow until specific event(s) are received, such as approvals or cancellations.

Sleep / Delays in Flows

Stop early a flow based on a step's result.

Custom Timeout for Step

If the execution takes longer than the time limit, the execution of the step will be interrupted.

Example of a flow in Windmill.