@Plugin(name="docker", category="Lookup") public class DockerLookup extends AbstractLookup
Modifier and Type | Field and Description |
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private Container |
container |
private static java.lang.String |
DOCKER_URI |
private static java.lang.String |
HTTP |
private static Logger |
LOGGER |
Constructor and Description |
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DockerLookup() |
Modifier and Type | Method and Description |
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java.lang.String |
lookup(LogEvent event,
java.lang.String key)
Looks up a String key to a String value possibly using the current LogEvent.
|
lookup
private static final Logger LOGGER
private static final java.lang.String DOCKER_URI
private static final java.lang.String HTTP
private final Container container
public java.lang.String lookup(LogEvent event, java.lang.String key)
StrLookup
The internal implementation may use any mechanism to return the value. The simplest implementation is to use a Map. However, virtually any implementation is possible.
For example, it would be possible to implement a lookup that used the key as a primary key, and looked up the value on demand from the database Or, a numeric based implementation could be created that treats the key as an integer, increments the value and return the result as a string - converting 1 to 2, 15 to 16 etc.
This method always returns a String, regardless of the underlying data, by converting it as necessary. For example:
Map<String, Object> map = new HashMap<String, Object>(); map.put("number", new Integer(2)); assertEquals("2", StrLookup.mapLookup(map).lookup("number"));
event
- The current LogEvent.key
- the key to be looked up, may be null