com.cloudera.director.aws.ec2

Class EphemeralDeviceMappings

java.lang.Object

com.cloudera.director.aws.ec2.EphemeralDeviceMappings

All Implemented Interfaces:

com.google.common.base.Function<String,List<com.amazonaws.services.ec2.model.BlockDeviceMapping>>

public class EphemeralDeviceMappings
extends Object
implements com.google.common.base.Function<String,List<com.amazonaws.services.ec2.model.BlockDeviceMapping>>

Maps an instance type to a list of block device mappings for ephemeral storage. EC2 does not provide a means through the API to discover mappings. This class looks up mappings using a built-in list and an override list that the user can easily modify.

See Also:

Amazon EC2 Instance Stor, Block Device Mapping

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EphemeralDeviceMappings.EphemeralDeviceMappingsConfig
static class	EphemeralDeviceMappings.EphemeralDeviceMappingsConfigProperties

Constructor Summary

Constructors

Constructor and Description
EphemeralDeviceMappings(com.cloudera.director.spi.v1.model.Configured configuration, File configurationDirectory, com.cloudera.director.spi.v1.model.LocalizationContext launcherLocalizationContext) Creates ephemeral device mappings with the specified parameters.
EphemeralDeviceMappings(EphemeralDeviceMappings.EphemeralDeviceMappingsConfigProperties ephemeralDeviceMappingsConfigProperties) Creates ephemeral device mappings with the specified parameters.

Method Summary

Modifier and Type	Method and Description
List<com.amazonaws.services.ec2.model.BlockDeviceMapping>	apply(String instanceType) Generates a list of block device mappings for all ephemeral drives for the given instance type.
static EphemeralDeviceMappings	getTestInstance(Map<String,Integer> counts, com.cloudera.director.spi.v1.model.LocalizationContext launcherLocalizationContext) Gets a test instance of this class that uses only the given mapping.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.common.base.Function

equals

Constructor Detail

EphemeralDeviceMappings

public EphemeralDeviceMappings(com.cloudera.director.spi.v1.model.Configured configuration,
                               File configurationDirectory,
                               com.cloudera.director.spi.v1.model.LocalizationContext launcherLocalizationContext)

Creates ephemeral device mappings with the specified parameters.

Parameters:

configuration - the configuration

configurationDirectory - the plugin configuration directory

launcherLocalizationContext - the parent launcher localization context

EphemeralDeviceMappings

public EphemeralDeviceMappings(EphemeralDeviceMappings.EphemeralDeviceMappingsConfigProperties ephemeralDeviceMappingsConfigProperties)

Creates ephemeral device mappings with the specified parameters.

Parameters:

ephemeralDeviceMappingsConfigProperties - the config properties

Method Detail

apply

@Nonnull
public List<com.amazonaws.services.ec2.model.BlockDeviceMapping> apply(String instanceType)

Generates a list of block device mappings for all ephemeral drives for the given instance type.

Specified by:

apply in interface com.google.common.base.Function<String,List<com.amazonaws.services.ec2.model.BlockDeviceMapping>>

Parameters:

instanceType - EC2 instance type

Returns:

list of block device mappings

See Also:

Block Device Mapping

getTestInstance

public static EphemeralDeviceMappings getTestInstance(Map<String,Integer> counts,
                                                      com.cloudera.director.spi.v1.model.LocalizationContext launcherLocalizationContext)

Gets a test instance of this class that uses only the given mapping.

Parameters:

counts - map of instance types to counts

launcherLocalizationContext - the parent launcher localization context

Returns:

new mapping object