com.mesosphere.sdk.offer.taskdata

Class LabelReader

java.lang.Object

com.mesosphere.sdk.offer.taskdata.LabelReader

class LabelReader
extends java.lang.Object

Implements common logic for read access to a task's Labels. Any access to component-specific values is provided by subclasses.

Constructor Summary

Constructors

Constructor and Description
LabelReader(java.lang.String taskName, Labels labels) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
protected java.util.Optional<java.lang.String>	getOptional(java.lang.String key) Returns the requested label value, or an empty Optional if the value was not found.
protected java.lang.String	getOrThrow(java.lang.String key) Returns the requested label value, or throws an exception if the value was not found.

Methods inherited from class java.lang.Object

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

Constructor Detail

LabelReader

LabelReader(java.lang.String taskName,
            Labels labels)

Creates a new instance.

Parameters:

taskName - the name of the task, only used in error messages if there are problems with the label content

labels - the labels to be read from

Method Detail

getOrThrow

protected java.lang.String getOrThrow(java.lang.String key)
                               throws TaskException

Returns the requested label value, or throws an exception if the value was not found.

Throws:

TaskException

getOptional

protected java.util.Optional<java.lang.String> getOptional(java.lang.String key)

Returns the requested label value, or an empty Optional if the value was not found.