svn commit: r1811851 - /uima/uv3/uimaj-v3/trunk/uimaj-core/src/main/java/org/apache/uima/util/MessageReport.java

[sc...@apache.org]

Author: schor
Date: Wed Oct 11 17:24:31 2017
New Revision: 1811851

URL: http://svn.apache.org/viewvc?rev=1811851&view=rev
Log:
no Jira - copy from v2 - for backwards compatibility

Added:
    uima/uv3/uimaj-v3/trunk/uimaj-core/src/main/java/org/apache/uima/util/MessageReport.java

Added: uima/uv3/uimaj-v3/trunk/uimaj-core/src/main/java/org/apache/uima/util/MessageReport.java
URL: http://svn.apache.org/viewvc/uima/uv3/uimaj-v3/trunk/uimaj-core/src/main/java/org/apache/uima/util/MessageReport.java?rev=1811851&view=auto
==============================================================================
--- uima/uv3/uimaj-v3/trunk/uimaj-core/src/main/java/org/apache/uima/util/MessageReport.java (added)
+++ uima/uv3/uimaj-v3/trunk/uimaj-core/src/main/java/org/apache/uima/util/MessageReport.java Wed Oct 11 17:24:31 2017
@@ -0,0 +1,57 @@
+/*
+ * 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.uima.util;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.util.concurrent.atomic.AtomicInteger;
+
+// not used in v3, kept for backwards compatibility
+public class MessageReport {
+
+  /**
+   * Issues message at warning or fine level (fine if enabled, includes stack trace)
+   * @param errorCount the count of errors used to decrease the frequency
+   * @param message the message
+   * @param logger the logger to use
+   */
+  public static void decreasingWithTrace(AtomicInteger errorCount, String message, Logger logger) {
+    if (logger != null) {
+      final int c = errorCount.incrementAndGet();
+      final int cTruncated = Integer.highestOneBit(c); 
+      // log with decreasing frequency
+      if (cTruncated == c) {
+        if (logger.isLoggable(Level.FINE)) {
+          try { throw new Throwable();}
+          catch (Throwable e) {
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            PrintStream ps = new PrintStream(baos);
+            e.printStackTrace(ps);
+            message = "Message count: " + c + "; " + message + " Message count indicates messages skipped to avoid potential flooding.\n" + baos.toString();
+            logger.log(Level.FINE, message);
+          }
+        } else {
+          message = "Message count: " + c + "; " + message + " Message count indicates messages skipped to avoid potential flooding. Set FINE logging level for stacktrace.";
+          logger.log(Level.WARNING, message);
+        }
+      }
+    }
+  }
+}