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Version: 4.4.0

Dependencies between tasks

Another powerful feature of the Scheduler module is the possibility of adding dependencies to a task. The dependencies are tasks that will be launched just after the parent task finishes. These dependencies can also contain other dependencies, creating a workflow.

Types

There are two main types of dependencies.

Synchronous dependencies

The synchronous dependencies are, as their name suggest, executed in a synchronous way, in a configurable order.

The synchronous dependencies are created by setting the Blocking=Yes option.

Setting blocking to yes means that, in case that any of the dependencies ends with an error, it will cancel the entire synchronous execution stack.

To manage the stack, there is the Order criterion, which is used to set the order in which the synchronous dependencies are going to be executed.

Asynchronous dependencies

The asynchronous dependencies are executed in bulk and their execution order can't be configured.

As the dependencies are executed in bulk, they are not going to block each other

Dependencies configuration

The dependency configuration screen allows to create two type of dependencies, synchronous and asynchronous.

The difference between them is just that one is blocking whereas the other is not.

In order to add a task as a dependency, its launch type must be set to Manual.

ElementoDefinitionUso
TaskThe task the dependency is going to executeObligatorio
BlockingUsed to define if the dependency is going to be synchronous or asynchronous, and if it can cancel the synchronous dependencies execution stackObligatorio
OrderSynchronous dependency execution order, only needed if the Blocking option is set to Yes, otherwise it will be disabledObligatorio

Workflows

Workflow example

This image shows an example on how to create a workflow using the scheduler dependencies concatenation.