Move async support to log4j-async-logger

This moves the main code for `AsyncLogger` and `AsyncLoggerConfig` to
`log4j-async-logger`.

Further tasks such as proper encapsulation into internal packages and
removal of the optional dependency guards, will be performed in a future
task.

Author: ppkarwasz

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AbstractAsyncExceptionHandler.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AbstractAsyncExceptionHandler.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import com.lmax.disruptor.ExceptionHandler;
 

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLogger.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLogger.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import java.util.List;
 import org.apache.logging.log4j.Level;
@@ -24,6 +24,8 @@
 import org.apache.logging.log4j.core.Logger;
 import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.ReusableLogEvent;
+import org.apache.logging.log4j.core.async.AsyncQueueFullMessageUtil;
+import org.apache.logging.log4j.core.async.EventRoute;
 import org.apache.logging.log4j.core.config.Configuration;
 import org.apache.logging.log4j.core.config.LoggerConfig;
 import org.apache.logging.log4j.core.config.Property;

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerConfig.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerConfig.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import java.util.List;
 import java.util.concurrent.TimeUnit;
@@ -23,6 +23,8 @@
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.core.Filter;
 import org.apache.logging.log4j.core.LogEvent;
+import org.apache.logging.log4j.core.async.AsyncQueueFullMessageUtil;
+import org.apache.logging.log4j.core.async.EventRoute;
 import org.apache.logging.log4j.core.config.AppenderRef;
 import org.apache.logging.log4j.core.config.Configuration;
 import org.apache.logging.log4j.core.config.LoggerConfig;

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerConfigDefaultExceptionHandler.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerConfigDefaultExceptionHandler.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 /**
  * Default disruptor exception handler for errors that occur in the AsyncLogger background thread.

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerConfigDelegate.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerConfigDelegate.java

@@ -14,10 +14,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.core.LogEvent;
+import org.apache.logging.log4j.core.async.EventRoute;
 import org.apache.logging.log4j.core.impl.LogEventFactory;
 
 /**

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerConfigDisruptor.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerConfigDisruptor.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import com.lmax.disruptor.EventFactory;
 import com.lmax.disruptor.EventHandler;
@@ -34,6 +34,11 @@
 import org.apache.logging.log4j.core.AbstractLifeCycle;
 import org.apache.logging.log4j.core.LogEvent;
 import org.apache.logging.log4j.core.ReusableLogEvent;
+import org.apache.logging.log4j.core.async.AsyncQueueFullPolicy;
+import org.apache.logging.log4j.core.async.AsyncQueueFullPolicyFactory;
+import org.apache.logging.log4j.core.async.DiscardingAsyncQueueFullPolicy;
+import org.apache.logging.log4j.core.async.EventRoute;
+import org.apache.logging.log4j.core.async.InternalAsyncUtil;
 import org.apache.logging.log4j.core.impl.Log4jLogEvent;
 import org.apache.logging.log4j.core.impl.Log4jPropertyKey;
 import org.apache.logging.log4j.core.impl.LogEventFactory;

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerContext.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerContext.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import java.net.URI;
 import java.util.concurrent.TimeUnit;

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerContextSelector.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerContextSelector.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import java.net.URI;
 import org.apache.logging.log4j.core.LoggerContext;

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerDefaultExceptionHandler.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerDefaultExceptionHandler.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 /**
  * Default disruptor exception handler for errors that occur in the AsyncLogger background thread.

log4j-core/src/main/java/org/apache/logging/log4j/core/async/AsyncLoggerDisruptor.java renamed to log4j-async-logger/src/main/java/org/apache/logging/log4j/async/logger/AsyncLoggerDisruptor.java

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.logging.log4j.core.async;
+package org.apache.logging.log4j.async.logger;
 
 import com.lmax.disruptor.ExceptionHandler;
 import com.lmax.disruptor.RingBuffer;
@@ -30,6 +30,10 @@
 import java.util.function.Supplier;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.core.AbstractLifeCycle;
+import org.apache.logging.log4j.core.async.AsyncQueueFullPolicy;
+import org.apache.logging.log4j.core.async.AsyncQueueFullPolicyFactory;
+import org.apache.logging.log4j.core.async.DiscardingAsyncQueueFullPolicy;
+import org.apache.logging.log4j.core.async.EventRoute;
 import org.apache.logging.log4j.core.impl.Log4jPropertyKey;
 import org.apache.logging.log4j.core.util.Log4jThread;
 import org.apache.logging.log4j.core.util.Log4jThreadFactory;