com.netflix.priam.configSource

Class CompositeConfigSource

java.lang.Object

com.netflix.priam.configSource.AbstractConfigSource

com.netflix.priam.configSource.CompositeConfigSource

All Implemented Interfaces:

IConfigSource

Direct Known Subclasses:

PriamConfigSource

public class CompositeConfigSource
extends AbstractConfigSource

A IConfigSource that delegates method calls to the underline sources. The order in which values are provided depend on the IConfigSources provided. If user asks for key 'foo', and this composite has three sources, it will first check if the key is found in the first source, if not it will check the second and if not, the third, else return null or false if contains(String) was called.

Implementation note: get methods with a default are implemented in AbstractConfigSource, if the underlying source overrides one of these methods, then that implementation will be ignored.

Constructor Summary

Constructors

Constructor and Description
CompositeConfigSource(java.util.Collection<? extends IConfigSource> sources)
CompositeConfigSource(IConfigSource... sources)
CompositeConfigSource(com.google.common.collect.ImmutableCollection<? extends IConfigSource> sources)
CompositeConfigSource(java.lang.Iterable<? extends IConfigSource> sources)

Method Summary

Modifier and Type	Method and Description
boolean	contains(java.lang.String key) Check if the given key can be found in the config.
java.lang.String	get(java.lang.String key) Get a String associated with the given configuration key.
void	initialize(java.lang.String asgName, java.lang.String region) Must be called before any other method.
boolean	isEmpty() Returns true if the size is zero.
void	set(java.lang.String key, java.lang.String value) Set the value for the given key.
int	size() A non-negative integer indicating a count of elements.

Methods inherited from class com.netflix.priam.configSource.AbstractConfigSource

get, get, get, get, get, get, get, get, getAsgName, getList, getList, getRegion

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeConfigSource

public CompositeConfigSource(com.google.common.collect.ImmutableCollection<? extends IConfigSource> sources)

CompositeConfigSource

public CompositeConfigSource(java.util.Collection<? extends IConfigSource> sources)

CompositeConfigSource

public CompositeConfigSource(java.lang.Iterable<? extends IConfigSource> sources)

CompositeConfigSource

public CompositeConfigSource(IConfigSource... sources)

Method Detail

initialize

public void initialize(java.lang.String asgName,
                       java.lang.String region)

Description copied from interface: IConfigSource

Must be called before any other method. This method will allow implementations to do any setup that they require before being called.

Specified by:

initialize in interface IConfigSource

Overrides:

initialize in class AbstractConfigSource

size

public int size()

Description copied from interface: IConfigSource

A non-negative integer indicating a count of elements.

Returns:

non-negative integer indicating a count of elements.

isEmpty

public boolean isEmpty()

Description copied from interface: IConfigSource

Returns true if the size is zero. May be more efficient than calculating size.

Specified by:

isEmpty in interface IConfigSource

Overrides:

isEmpty in class AbstractConfigSource

Returns:

true if the size is zero otherwise false.

contains

public boolean contains(java.lang.String key)

Description copied from interface: IConfigSource

Check if the given key can be found in the config.

Specified by:

contains in interface IConfigSource

Overrides:

contains in class AbstractConfigSource

Parameters:

key - to look up value.

Returns:

if the key is present

get

public java.lang.String get(java.lang.String key)

Description copied from interface: IConfigSource

Get a String associated with the given configuration key.

Parameters:

key - to look up value.

Returns:

value from config or null if not present.

set

public void set(java.lang.String key,
                java.lang.String value)

Description copied from interface: IConfigSource

Set the value for the given key.

Parameters:

key - to set value for.

value - to set.