package org.apache.logging.log4j.core.appender.nosql;
import java.io.Serializable;
import org.apache.logging.log4j.Marker;
import org.apache.logging.log4j.ThreadContext;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.appender.AppenderLoggingException;
import org.apache.logging.log4j.core.appender.ManagerFactory;
import org.apache.logging.log4j.core.appender.db.AbstractDatabaseManager;
import org.apache.logging.log4j.core.util.Closer;
import org.apache.logging.log4j.message.MapMessage;
import org.apache.logging.log4j.util.BiConsumer;
import org.apache.logging.log4j.util.ReadOnlyStringMap;
public final class NoSqlDatabaseManager<W> extends AbstractDatabaseManager {
private static final NoSQLDatabaseManagerFactory FACTORY = new NoSQLDatabaseManagerFactory();
private final NoSqlProvider<NoSqlConnection<W, ? extends NoSqlObject<W>>> provider;
private NoSqlConnection<W, ? extends NoSqlObject<W>> connection;
private NoSqlDatabaseManager(final String name, final int bufferSize,
final NoSqlProvider<NoSqlConnection<W, ? extends NoSqlObject<W>>> provider) {
super(name, bufferSize);
this.provider = provider;
}
@Override
protected void startupInternal() {
}
@Override
protected boolean shutdownInternal() {
return Closer.closeSilently(this.connection);
}
@Override
protected void connectAndStart() {
try {
this.connection = this.provider.getConnection();
} catch (final Exception e) {
throw new AppenderLoggingException("Failed to get connection from NoSQL connection provider.", e);
}
}
@Override
protected void writeInternal(final LogEvent event, final Serializable serializable) {
if (!this.isRunning() || this.connection == null || this.connection.isClosed()) {
throw new AppenderLoggingException(
"Cannot write logging event; NoSQL manager not connected to the database.");
}
final NoSqlObject<W> entity = this.connection.createObject();
if (serializable instanceof MapMessage) {
setFields((MapMessage<?, ?>) serializable, entity);
} else {
setFields(event, entity);
}
this.connection.insertObject(entity);
}
private void setFields(final MapMessage<?, ?> mapMessage, final NoSqlObject<W> noSqlObject) {
mapMessage.forEach(new BiConsumer<String, Object>() {
@Override
public void accept(final String key, final Object value) {
noSqlObject.set(key, value);
}
});
}
private void setFields(final LogEvent event, final NoSqlObject<W> entity) {
entity.set("level", event.getLevel());
entity.set("loggerName", event.getLoggerName());
entity.set("message", event.getMessage() == null ? null : event.getMessage().getFormattedMessage());
final StackTraceElement source = event.getSource();
if (source == null) {
entity.set("source", (Object) null);
} else {
entity.set("source", this.convertStackTraceElement(source));
}
final Marker marker = event.getMarker();
if (marker == null) {
entity.set("marker", (Object) null);
} else {
entity.set("marker", buildMarkerEntity(marker));
}
entity.set("threadId", event.getThreadId());
entity.set("threadName", event.getThreadName());
entity.set("threadPriority", event.getThreadPriority());
entity.set("millis", event.getTimeMillis());
entity.set("date", new java.util.Date(event.getTimeMillis()));
@SuppressWarnings("ThrowableResultOfMethodCallIgnored")
Throwable thrown = event.getThrown();
if (thrown == null) {
entity.set("thrown", (Object) null);
} else {
final NoSqlObject<W> originalExceptionEntity = this.connection.createObject();
NoSqlObject<W> exceptionEntity = originalExceptionEntity;
exceptionEntity.set("type", thrown.getClass().getName());
exceptionEntity.set("message", thrown.getMessage());
exceptionEntity.set("stackTrace", this.convertStackTrace(thrown.getStackTrace()));
while (thrown.getCause() != null) {
thrown = thrown.getCause();
final NoSqlObject<W> causingExceptionEntity = this.connection.createObject();
causingExceptionEntity.set("type", thrown.getClass().getName());
causingExceptionEntity.set("message", thrown.getMessage());
causingExceptionEntity.set("stackTrace", this.convertStackTrace(thrown.getStackTrace()));
exceptionEntity.set("cause", causingExceptionEntity);
exceptionEntity = causingExceptionEntity;
}
entity.set("thrown", originalExceptionEntity);
}
final ReadOnlyStringMap contextMap = event.getContextData();
if (contextMap == null) {
entity.set("contextMap", (Object) null);
} else {
final NoSqlObject<W> contextMapEntity = this.connection.createObject();
contextMap.forEach(new BiConsumer<String, String>() {
@Override
public void accept(final String key, final String val) {
contextMapEntity.set(key, val);
}
});
entity.set("contextMap", contextMapEntity);
}
final ThreadContext.ContextStack contextStack = event.getContextStack();
if (contextStack == null) {
entity.set("contextStack", (Object) null);
} else {
entity.set("contextStack", contextStack.asList().toArray());
}
}
private NoSqlObject<W> buildMarkerEntity(final Marker marker) {
final NoSqlObject<W> entity = this.connection.createObject();
entity.set("name", marker.getName());
final Marker[] parents = marker.getParents();
if (parents != null) {
@SuppressWarnings("unchecked")
final NoSqlObject<W>[] parentEntities = new NoSqlObject[parents.length];
for (int i = 0; i < parents.length; i++) {
parentEntities[i] = buildMarkerEntity(parents[i]);
}
entity.set("parents", parentEntities);
}
return entity;
}
@Override
protected boolean commitAndClose() {
return true;
}
private NoSqlObject<W>[] convertStackTrace(final StackTraceElement[] stackTrace) {
final NoSqlObject<W>[] stackTraceEntities = this.connection.createList(stackTrace.length);
for (int i = 0; i < stackTrace.length; i++) {
stackTraceEntities[i] = this.convertStackTraceElement(stackTrace[i]);
}
return stackTraceEntities;
}
private NoSqlObject<W> convertStackTraceElement(final StackTraceElement element) {
final NoSqlObject<W> elementEntity = this.connection.createObject();
elementEntity.set("className", element.getClassName());
elementEntity.set("methodName", element.getMethodName());
elementEntity.set("fileName", element.getFileName());
elementEntity.set("lineNumber", element.getLineNumber());
return elementEntity;
}
public static NoSqlDatabaseManager<?> getNoSqlDatabaseManager(final String name, final int bufferSize,
final NoSqlProvider<?> provider) {
return AbstractDatabaseManager.getManager(name, new FactoryData(bufferSize, provider), FACTORY);
}
private static final class FactoryData extends AbstractDatabaseManager.AbstractFactoryData {
private final NoSqlProvider<?> provider;
protected FactoryData(final int bufferSize, final NoSqlProvider<?> provider) {
super(bufferSize, null);
this.provider = provider;
}
}
private static final class NoSQLDatabaseManagerFactory implements
ManagerFactory<NoSqlDatabaseManager<?>, FactoryData> {
@Override
@SuppressWarnings("unchecked")
public NoSqlDatabaseManager<?> createManager(final String name, final FactoryData data) {
return new NoSqlDatabaseManager(name, data.getBufferSize(), data.provider);
}
}
}