LOG4J2-1858 make the MAX_REUSABLE_MESSAGE_SIZE available in log4j-api's 
Constants class


Project: http://git-wip-us.apache.org/repos/asf/logging-log4j2/repo
Commit: http://git-wip-us.apache.org/repos/asf/logging-log4j2/commit/a903427c
Tree: http://git-wip-us.apache.org/repos/asf/logging-log4j2/tree/a903427c
Diff: http://git-wip-us.apache.org/repos/asf/logging-log4j2/diff/a903427c

Branch: refs/heads/master
Commit: a903427c5f373e476736a07f259afb463a7001fd
Parents: f1b71ea
Author: rpopma <rpo...@apache.org>
Authored: Sun Apr 16 16:50:25 2017 +0900
Committer: rpopma <rpo...@apache.org>
Committed: Sun Apr 16 16:50:25 2017 +0900

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 .../org/apache/logging/log4j/util/Constants.java     | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
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http://git-wip-us.apache.org/repos/asf/logging-log4j2/blob/a903427c/log4j-api/src/main/java/org/apache/logging/log4j/util/Constants.java
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diff --git 
a/log4j-api/src/main/java/org/apache/logging/log4j/util/Constants.java 
b/log4j-api/src/main/java/org/apache/logging/log4j/util/Constants.java
index ab300bf..c20d446 100644
--- a/log4j-api/src/main/java/org/apache/logging/log4j/util/Constants.java
+++ b/log4j-api/src/main/java/org/apache/logging/log4j/util/Constants.java
@@ -43,6 +43,21 @@ public final class Constants {
     public static final int JAVA_MAJOR_VERSION = getMajorVersion();
 
     /**
+     * Maximum size of the StringBuilders used in RingBuffer LogEvents to 
store the contents of reusable Messages.
+     * After a large message has been delivered to the appenders, the 
StringBuilder is trimmed to this size.
+     * <p>
+     * The default value is {@value}, which allows the StringBuilder to resize 
three times from its initial size.
+     * Users can override with system property "log4j.maxReusableMsgSize".
+     * </p>
+     * @since 2.9
+     */
+    public static final int MAX_REUSABLE_MESSAGE_SIZE = 
size("log4j.maxReusableMsgSize", (128 * 2 + 2) * 2 + 2);
+
+    private static int size(final String property, final int defaultValue) {
+        return PropertiesUtil.getProperties().getIntegerProperty(property, 
defaultValue);
+    }
+
+    /**
      * Determines if a named Class can be loaded or not.
      *
      * @param className The class name.

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