org.hawkular.metrics.tasks.api

Class TaskServiceBuilder

java.lang.Object

org.hawkular.metrics.tasks.api.TaskServiceBuilder

public class TaskServiceBuilder
extends Object

A builder for creating and configuring a TaskService instance.

Author:

jsanda

Constructor Summary

Constructors

Constructor and Description
TaskServiceBuilder()

Method Summary

Modifier and Type	Method and Description
TaskService	build()
TaskServiceBuilder	withSession(com.datastax.driver.core.Session session) The session object to use for querying Cassandra.
TaskServiceBuilder	withTaskTypes(List<TaskType> taskTypes) Specifies the types of tasks that the TaskService will execute.
TaskServiceBuilder	withTimeUnit(TimeUnit timeUnit) The time unit determines a couple things.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TaskServiceBuilder

public TaskServiceBuilder()

Method Detail

withTimeUnit

public TaskServiceBuilder withTimeUnit(TimeUnit timeUnit)

The time unit determines a couple things. First, it determines the frequency for scheduling jobs. If TimeUnit.MINUTES is used for instance, then jobs are scheduled every minute. In this context, a job refers to finding and executing tasks in the queue for a particular time slice, which brings up the second thing that timeUnit determines - time slice interval. Time slices are set along fixed intervals, e.g., 13:00, 13:01, 13:02, etc.

withSession

public TaskServiceBuilder withSession(com.datastax.driver.core.Session session)

The session object to use for querying Cassandra.

withTaskTypes

public TaskServiceBuilder withTaskTypes(List<TaskType> taskTypes)

Specifies the types of tasks that the TaskService will execute. The order is significant as it determines the order in which tasks are executed.

build

public TaskService build()