Class CconfigClientImpl

java.lang.Object

org.chenile.cconfig.sdk.impl.CconfigClientImpl

All Implemented Interfaces:

CconfigClient

public class CconfigClientImpl
extends Object
implements CconfigClient

The default implementation of the CconfigClient interface. This uses an OWIZ orchestration over ConfigContext to apply multiple config retrievers.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) MemoryCache	memoryCache
private final OrchExecutor<ConfigContext>	orchExecutor

Constructor Summary

Constructors

Constructor	Description
CconfigClientImpl(OrchExecutor<ConfigContext> orchExecutor)

Method Summary

Modifier and Type	Method	Description
private Map<String,Object>	allKeysForModule(String module, String customAttribute)
protected String	customizationAttribute()	Override this in a subclass to change the default behaviour.
Map<String,Object>	value(String module, String key)

Methods inherited from class Object

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

Methods inherited from interface CconfigClient

value, value

Field Details

orchExecutor

private final OrchExecutor<ConfigContext> orchExecutor

memoryCache

@Autowired
MemoryCache memoryCache

Constructor Details

CconfigClientImpl

public CconfigClientImpl(OrchExecutor<ConfigContext> orchExecutor)

Method Details

value

public Map<String,Object> value(String module,
 String key)

Specified by:

value in interface CconfigClient

Parameters:

module - - the module under which the key is defined. Modules can be nested.

key - - the key for which value is desired.

Returns:

the value for the key. If key is null and only module name is specified, then all keys for module will be returned. Key value can be string or a map.
If a module is specified and key is null it will be a map with all the keys as keys of the map. The value can be strings or map depending on how the value was defined by any of the Config Retrievers.
Eg: The JSON config retriever defines the keys for a module can look like this:
"key1": "value1" "key2": { "valid JSON": "here", "it": { "can": {"be": { "arbitrarily": "nested"}}} }
These JSON values can be over-ridden in two ways :

1. They can be over-ridden for all "requests" whether they have a custom attribute or not (__GLOBAL__)
2. They can be over-ridden for specific "requests" that have a custom attribute (eg. all requests that belong to a client "tenant0")

The whole JSON can be over-ridden or specific portions of the JSON (given by path) can be over-ridden. Please see the test cases for more details.
New keys can be introduced by individual config retrievers.

allKeysForModule

private Map<String,Object> allKeysForModule(String module,
 String customAttribute)

Parameters:

module - name of the module

Returns:

all the keys in the module. This includes all the keys in the JSON file (if found) and also the DB keys.

customizationAttribute

protected String customizationAttribute()

Override this in a subclass to change the default behaviour.

Returns:

the value of custom attribute from request headers. Default implementation returns the value of the tenant ID header.