Class BaseTriggerTask

The base task for implementing any type of custom action that runs as a task against a IActionTrigger task

Inheritance
object
BaseTriggerTask
TriggerTask
Implements
Inherited Members
Namespace: LemonEdge.API.Core.Tasks.Processors.Triggers
Assembly: LemonEdge.API.dll
Syntax
public abstract class BaseTriggerTask : ITaskProcessor, IProcessor, IDisposable

Constructors

BaseTriggerTask()

Declaration
protected BaseTriggerTask()

Properties

Action

A custom action string for matching against a TriggeredActionParameter

Declaration
protected abstract string Action { get; }
Property Value
Type Description
string

Cache

A local cache for performance

Declaration
public IReadOnlyCache Cache { get; }
Property Value
Type Description
IReadOnlyCache

ForID

The list of entitiy ids this action is triggered against

Declaration
protected abstract Guid? ForID { get; }
Property Value
Type Description
Guid?

ForTypes

The types of entities this action is triggered against

Declaration
protected abstract Guid[] ForTypes { get; }
Property Value
Type Description
Guid[]

Param

The trigger action parameters inheriting from BaseTriggerParameter

Declaration
protected ServerTaskParameter Param { get; }
Property Value
Type Description
ServerTaskParameter

Reporter

A reporter to provide feedback to a log, or client depending on the context the process is running under

Declaration
public BusyProgressReporter Reporter { get; set; }
Property Value
Type Description
BusyProgressReporter

Runner

The host that is running this action trigger task

Declaration
public ITaskRunner Runner { get; }
Property Value
Type Description
ITaskRunner

TimeStamp

The timestamp of the changes that occured that triggered this action

Declaration
protected abstract DateTimeOffset? TimeStamp { get; }
Property Value
Type Description
DateTimeOffset?

TriggerID

The IActionTrigger that triggered this action

Declaration
protected abstract Guid? TriggerID { get; }
Property Value
Type Description
Guid?

TriggeredContexts

A list of the contexts that triggered this action

Declaration
protected abstract IDictionary<IActionTrigger, List<TriggerContext>> TriggeredContexts { get; }
Property Value
Type Description
IDictionary<IActionTrigger, List<TriggerContext>>

Updater

A context to ensure the process can query, load and modify all LemonEdge data

Declaration
public IEntityUpdater Updater { get; }
Property Value
Type Description
IEntityUpdater

User

The current logged in user the process is running under

Declaration
public UserInfo User { get; }
Property Value
Type Description
UserInfo

Methods

Dispose()

Declaration
public void Dispose()

Dispose(bool)

Declaration
protected virtual void Dispose(bool disposing)
Parameters
Type Name Description
bool disposing

Init(ITaskRunner, ServerTaskParameter)

Initializes the task processor with the trigger action parameters for processing the task

Declaration
public Task Init(ITaskRunner runner, ServerTaskParameter ProcessTaskParameter)
Parameters
Type Name Description
ITaskRunner runner

The context within which the task is being processed
ServerTaskParameter ProcessTaskParameter

The trigger action parameters inheriting from BaseTriggerParameter
Returns
Type Description
Task

A task indicating the completion of the operation

ProcessTask(CancellationToken)

If TriggeredContexts is null then this is the IActionTrigger task that determines which, if any, actions should be triggered.

It then populates TriggeredContexts for every matching action, and creates the appropriate triggered action task to process the action. These tasks inherit from BaseTriggerTask too, and are marked with TriggerTask

Each triggered action task has its TriggeredContexts set to the contexts that created the action, passes the parameters from TriggeredActionParameter and executes the action.

Both then call ProcessTriggers(IDictionary<IActionTrigger, List<TriggerContext>>, CancellationToken) with the TriggeredContexts values (either calculated or passed)

All implementations simply have to implement ProcessTriggers to perform the custom action required now IActionTrigger has triggered them
Declaration
public Task<object> ProcessTask(CancellationToken cancel)
Parameters
Type Name Description
CancellationToken cancel
Returns
Type Description
Task<object>

ProcessTriggers(IDictionary<IActionTrigger, List<TriggerContext>>, CancellationToken)

Processes the items that have been triggered by the IActionTrigger

Declaration
protected abstract Task ProcessTriggers(IDictionary<IActionTrigger, List<TriggerContext>> triggeredItem, CancellationToken cancel)
Parameters
Type Name Description
IDictionary<IActionTrigger, List<TriggerContext>> triggeredItem

A dictionary of each triggered item and the contexts that triggered it
CancellationToken cancel

A cancellation token for cancelling the task process
Returns
Type Description
Task

A task indicating the completion of the operation

Implements

Extension Methods