svn commit: r1232293 - /hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java

[te...@apache.org]

Author: tedyu
Date: Tue Jan 17 04:13:19 2012
New Revision: 1232293

URL: http://svn.apache.org/viewvc?rev=1232293&view=rev
Log:
HBASE-5153 Add new file - ConnectionUtils.java

Added:
    hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java

Added: hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java
URL: http://svn.apache.org/viewvc/hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java?rev=1232293&view=auto
==============================================================================
--- hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java (added)
+++ hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/ConnectionUtils.java Tue Jan 17 04:13:19 2012
@@ -0,0 +1,42 @@
+/**
+ * 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.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HConstants;
+
+
+/**
+ * Utility used by client connections such as {@link HConnection} and
+ * {@link ServerCallable}
+ */
+public class ConnectionUtils {
+  /**
+   * Calculate pause time.
+   * Built on {@link HConstants#RETRY_BACKOFF}.
+   * @param pause
+   * @param tries
+   * @return How long to wait after <code>tries</code> retries
+   */
+  public static long getPauseTime(final long pause, final int tries) {
+    int ntries = tries;
+    if (ntries >= HConstants.RETRY_BACKOFF.length) {
+      ntries = HConstants.RETRY_BACKOFF.length - 1;
+    }
+    return pause * HConstants.RETRY_BACKOFF[ntries];
+  }
+}