BrooklynFeatureEnablement (Apache Brooklyn)

java.lang.Object
- org.apache.brooklyn.core.BrooklynFeatureEnablement

```
@Beta
public class BrooklynFeatureEnablement
extends java.lang.Object
```
For enabling/disabling experimental features. They can be enabled via java system properties, or by explicitly calling setEnablement(String, boolean).
For example, start brooklyn with -Dbrooklyn.experimental.feature.policyPersistence=true

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`FEATURE_AUTO_FIX_CATALOG_REF_ON_REBIND` When rebinding, an entity could reference a catalog item that no longer exists.
`static java.lang.String`	`FEATURE_BACKWARDS_COMPATIBILITY_INFER_CATALOG_ITEM_ON_REBIND` When rebinding to state created from very old versions, the catalogItemId properties will be missing which results in errors when OSGi bundles are used.
`static java.lang.String`	`FEATURE_CATALOG_PERSISTENCE_PROPERTY`
`static java.lang.String`	`FEATURE_DEFAULT_STANDBY_IS_HOT_PROPERTY` whether the default standby mode is `HighAvailabilityMode.HOT_STANDBY` or falling back to the traditional `HighAvailabilityMode.STANDBY`
`static java.lang.String`	`FEATURE_ENRICHER_PERSISTENCE_PROPERTY`
`static java.lang.String`	`FEATURE_FEED_PERSISTENCE_PROPERTY`
`static java.lang.String`	`FEATURE_FEED_REGISTRATION_PROPERTY` whether feeds are automatically registered when set on entities, so that they are persisted
`static java.lang.String`	`FEATURE_POLICY_PERSISTENCE_PROPERTY`
`static java.lang.String`	`FEATURE_PROPERTY_PREFIX`
`static java.lang.String`	`FEATURE_RENAME_THREADS` Renaming threads can really helps with debugging etc; however it's a massive performance hit (2x)
`static java.lang.String`	`FEATURE_SSH_ASYNC_EXEC` When executing over ssh, whether to support the "async exec" approach, or only the classic approach.
`static java.lang.String`	`FEATURE_USE_BROOKLYN_LIVE_OBJECTS_DATAGRID_STORAGE` whether to attempt to use `BrooklynStorage` (datagrid) as a backing store for data; note this is not compatible with `FEATURE_DEFAULT_STANDBY_IS_HOT_PROPERTY` which uses a blob/file store and a larger-granularity rebind process than was intended with the datagrid
`static java.lang.String`	`FEATURE_VALIDATE_LOCATION_SSH_KEYS`

Constructor Summary

Constructors
Constructor and Description

BrooklynFeatureEnablement()

Constructors
Constructor and Description
`BrooklynFeatureEnablement()`

Method Summary

Methods
Modifier and Type	Method and Description
`static boolean`	`disable(java.lang.String property)`
`static boolean`	`enable(java.lang.String property)`
`static void`	`init(BrooklynProperties props)` Initialises the feature-enablement from brooklyn properties.
`static boolean`	`isEnabled(java.lang.String property)`
`static boolean`	`setEnablement(java.lang.String property, boolean val)`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - FEATURE_PROPERTY_PREFIX
```
public static final java.lang.String FEATURE_PROPERTY_PREFIX
```
    See Also:
    Constant Field Values
  - FEATURE_POLICY_PERSISTENCE_PROPERTY
```
public static final java.lang.String FEATURE_POLICY_PERSISTENCE_PROPERTY
```
    See Also:
    Constant Field Values
  - FEATURE_ENRICHER_PERSISTENCE_PROPERTY
```
public static final java.lang.String FEATURE_ENRICHER_PERSISTENCE_PROPERTY
```
    See Also:
    Constant Field Values
  - FEATURE_FEED_PERSISTENCE_PROPERTY
```
public static final java.lang.String FEATURE_FEED_PERSISTENCE_PROPERTY
```
    See Also:
    Constant Field Values
  - FEATURE_FEED_REGISTRATION_PROPERTY
```
public static final java.lang.String FEATURE_FEED_REGISTRATION_PROPERTY
```
    whether feeds are automatically registered when set on entities, so that they are persisted
    
    See Also:
    Constant Field Values
  - FEATURE_CATALOG_PERSISTENCE_PROPERTY
```
public static final java.lang.String FEATURE_CATALOG_PERSISTENCE_PROPERTY
```
    See Also:
    Constant Field Values
  - FEATURE_DEFAULT_STANDBY_IS_HOT_PROPERTY
```
public static final java.lang.String FEATURE_DEFAULT_STANDBY_IS_HOT_PROPERTY
```
    whether the default standby mode is HighAvailabilityMode.HOT_STANDBY or falling back to the traditional HighAvailabilityMode.STANDBY
    
    See Also:
    Constant Field Values
  - FEATURE_USE_BROOKLYN_LIVE_OBJECTS_DATAGRID_STORAGE
```
public static final java.lang.String FEATURE_USE_BROOKLYN_LIVE_OBJECTS_DATAGRID_STORAGE
```
    whether to attempt to use BrooklynStorage (datagrid) as a backing store for data; note this is not compatible with FEATURE_DEFAULT_STANDBY_IS_HOT_PROPERTY which uses a blob/file store and a larger-granularity rebind process than was intended with the datagrid
    
    See Also:
    Constant Field Values
  - FEATURE_RENAME_THREADS
```
public static final java.lang.String FEATURE_RENAME_THREADS
```
    Renaming threads can really helps with debugging etc; however it's a massive performance hit (2x)
    We get 55000 tasks per sec with this off, 28k/s with this on.
    Defaults to false if system property is not set.
    
    See Also:
    Constant Field Values
  - FEATURE_BACKWARDS_COMPATIBILITY_INFER_CATALOG_ITEM_ON_REBIND
```
public static final java.lang.String FEATURE_BACKWARDS_COMPATIBILITY_INFER_CATALOG_ITEM_ON_REBIND
```
    When rebinding to state created from very old versions, the catalogItemId properties will be missing which results in errors when OSGi bundles are used. When enabled the code tries to infer the catalogItemId from
    - parent entities
    - catalog items matching the type that needs to be deserialized
    - iterating through all catalog items and checking if they can provide the needed type
    See Also:
    Constant Field Values
  - FEATURE_AUTO_FIX_CATALOG_REF_ON_REBIND
```
public static final java.lang.String FEATURE_AUTO_FIX_CATALOG_REF_ON_REBIND
```
    When rebinding, an entity could reference a catalog item that no longer exists. This option will automatically update the catalog item reference to what is inferred as the most suitable catalog symbolicName:version.
    
    See Also:
    Constant Field Values
  - FEATURE_SSH_ASYNC_EXEC
```
public static final java.lang.String FEATURE_SSH_ASYNC_EXEC
```
    When executing over ssh, whether to support the "async exec" approach, or only the classic approach. If this feature is disabled, then even if the ShellTool.PROP_EXEC_ASYNC is configured it will still use the classic ssh approach.
    
    See Also:
    Constant Field Values
  - FEATURE_VALIDATE_LOCATION_SSH_KEYS
```
public static final java.lang.String FEATURE_VALIDATE_LOCATION_SSH_KEYS
```
    See Also:
    Constant Field Values
- Constructor Detail
  - BrooklynFeatureEnablement
```
public BrooklynFeatureEnablement()
```
- Method Detail
  - init
```
public static void init(BrooklynProperties props)
```
    Initialises the feature-enablement from brooklyn properties. For each property, prefer a system-property if present; otherwise use the value from brooklyn properties.
  - isEnabled
```
public static boolean isEnabled(java.lang.String property)
```
  - enable
```
public static boolean enable(java.lang.String property)
```
  - disable
```
public static boolean disable(java.lang.String property)
```
  - setEnablement
```
public static boolean setEnablement(java.lang.String property,
                    boolean val)
```

Class BrooklynFeatureEnablement

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

FEATURE_PROPERTY_PREFIX

FEATURE_POLICY_PERSISTENCE_PROPERTY

FEATURE_ENRICHER_PERSISTENCE_PROPERTY

FEATURE_FEED_PERSISTENCE_PROPERTY

FEATURE_FEED_REGISTRATION_PROPERTY

FEATURE_CATALOG_PERSISTENCE_PROPERTY

FEATURE_DEFAULT_STANDBY_IS_HOT_PROPERTY

FEATURE_USE_BROOKLYN_LIVE_OBJECTS_DATAGRID_STORAGE

FEATURE_RENAME_THREADS

FEATURE_BACKWARDS_COMPATIBILITY_INFER_CATALOG_ITEM_ON_REBIND

FEATURE_AUTO_FIX_CATALOG_REF_ON_REBIND

FEATURE_SSH_ASYNC_EXEC

FEATURE_VALIDATE_LOCATION_SSH_KEYS

Constructor Detail

BrooklynFeatureEnablement

Method Detail

init

isEnabled

enable

disable

setEnablement