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Posted to commits@logging.apache.org by rp...@apache.org on 2016/07/26 16:39:40 UTC
[09/24] logging-log4j2 git commit: LOG4J2-1010 factory to let users
specify custom ContextDataInjectors
LOG4J2-1010 factory to let users specify custom ContextDataInjectors
Project: http://git-wip-us.apache.org/repos/asf/logging-log4j2/repo
Commit: http://git-wip-us.apache.org/repos/asf/logging-log4j2/commit/9d055237
Tree: http://git-wip-us.apache.org/repos/asf/logging-log4j2/tree/9d055237
Diff: http://git-wip-us.apache.org/repos/asf/logging-log4j2/diff/9d055237
Branch: refs/heads/LOG4J2-1010&LOG4J2-1447-injectable-contextdata&better-datastructure
Commit: 9d0552375af0d8efee2dd13b6a178d3b0d3e757c
Parents: 845d4d3
Author: rpopma <rp...@apache.org>
Authored: Wed Jul 27 01:12:14 2016 +0900
Committer: rpopma <rp...@apache.org>
Committed: Wed Jul 27 01:12:14 2016 +0900
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.../core/impl/ContextDataInjectorFactory.java | 60 ++++++++++++++++++++
1 file changed, 60 insertions(+)
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http://git-wip-us.apache.org/repos/asf/logging-log4j2/blob/9d055237/log4j-core/src/main/java/org/apache/logging/log4j/core/impl/ContextDataInjectorFactory.java
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diff --git a/log4j-core/src/main/java/org/apache/logging/log4j/core/impl/ContextDataInjectorFactory.java b/log4j-core/src/main/java/org/apache/logging/log4j/core/impl/ContextDataInjectorFactory.java
new file mode 100644
index 0000000..ba9ca72
--- /dev/null
+++ b/log4j-core/src/main/java/org/apache/logging/log4j/core/impl/ContextDataInjectorFactory.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache license, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the license for the specific language governing permissions and
+ * limitations under the license.
+ */
+package org.apache.logging.log4j.core.impl;
+
+import org.apache.logging.log4j.core.LogEvent;
+import org.apache.logging.log4j.status.StatusLogger;
+import org.apache.logging.log4j.util.LoaderUtil;
+import org.apache.logging.log4j.util.PropertiesUtil;
+
+/**
+ * Factory for ContextDataInjectors.
+ *
+ * @see ContextDataInjector
+ * @see org.apache.logging.log4j.core.ContextData
+ * @see LogEvent#getContextData()
+ * @since 2.7
+ */
+public class ContextDataInjectorFactory {
+
+ /**
+ * Returns a new {@code ContextDataInjector} instance based on the value of system property
+ * {@code log4j.ContextDataInjector}. If not value was specified this method returns a new
+ * {@link ThreadContextDataInjector}.
+ * <p>
+ * Users may use this system property to specify the fully qualified class name of a class that implements the
+ * {@code ContextDataInjector} interface.
+ *
+ * @return a ContextDataInjector that populates the {@code ContextData} of all {@code LogEvent} objects
+ */
+ public static ContextDataInjector getInjector() {
+ final String className = PropertiesUtil.getProperties().getStringProperty("log4j.ContextDataInjector");
+ if (className == null) {
+ return new ThreadContextDataInjector();
+ }
+ try {
+ final Class<? extends ContextDataInjector> cls = LoaderUtil.loadClass(className).asSubclass(
+ ContextDataInjector.class);
+ return cls.newInstance();
+ } catch (final Exception dynamicFailed) {
+ StatusLogger.getLogger().warn(
+ "Could not create ContextDataInjector for '{}', using default ThreadContextDataInjector: {}",
+ className, dynamicFailed);
+ return new ThreadContextDataInjector();
+ }
+ }
+}