1 files changed, 137 insertions, 0 deletions
diff --git a/java/com/google/gerrit/sshd/SshLogLayout.java b/java/com/google/gerrit/sshd/SshLogLayout.java
new file mode 100644
index 0000000000..442ec52cb2
--- /dev/null
+++ b/java/com/google/gerrit/sshd/SshLogLayout.java
@@ -0,0 +1,137 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// Licensed 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 com.google.gerrit.sshd;
+
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.TimeZone;
+import org.apache.log4j.Layout;
+import org.apache.log4j.spi.LoggingEvent;
+import org.eclipse.jgit.util.QuotedString;
+
+public final class SshLogLayout extends Layout {
+
+  private static final String P_SESSION = "session";
+  private static final String P_USER_NAME = "userName";
+  private static final String P_ACCOUNT_ID = "accountId";
+  private static final String P_WAIT = "queueWaitTime";
+  private static final String P_EXEC = "executionTime";
+  private static final String P_STATUS = "status";
+  private static final String P_AGENT = "agent";
+
+  private final Calendar calendar;
+  private long lastTimeMillis;
+  private final char[] lastTimeString = new char[20];
+  private final SimpleDateFormat tzFormat;
+  private char[] timeZone;
+
+  public SshLogLayout() {
+    final TimeZone tz = TimeZone.getDefault();
+    calendar = Calendar.getInstance(tz);
+
+    tzFormat = new SimpleDateFormat("Z");
+    tzFormat.setTimeZone(tz);
+  }
+
+  @Override
+  public String format(LoggingEvent event) {
+    final StringBuffer buf = new StringBuffer(128);
+
+    buf.append('[');
+    formatDate(event.getTimeStamp(), buf);
+    buf.append(']');
+
+    req(P_SESSION, buf, event);
+    req(P_USER_NAME, buf, event);
+    req(P_ACCOUNT_ID, buf, event);
+
+    buf.append(' ');
+    buf.append(event.getMessage());
+
+    opt(P_WAIT, buf, event);
+    opt(P_EXEC, buf, event);
+    opt(P_STATUS, buf, event);
+    opt(P_AGENT, buf, event);
+
+    buf.append('\n');
+    return buf.toString();
+  }
+
+  private void formatDate(long now, StringBuffer sbuf) {
+    final int millis = (int) (now % 1000);
+    final long rounded = now - millis;
+    if (rounded != lastTimeMillis) {
+      synchronized (calendar) {
+        final int start = sbuf.length();
+        calendar.setTimeInMillis(rounded);
+        sbuf.append(calendar.get(Calendar.YEAR));
+        sbuf.append('-');
+        sbuf.append(toTwoDigits(calendar.get(Calendar.MONTH) + 1));
+        sbuf.append('-');
+        sbuf.append(toTwoDigits(calendar.get(Calendar.DAY_OF_MONTH)));
+        sbuf.append(' ');
+        sbuf.append(toTwoDigits(calendar.get(Calendar.HOUR_OF_DAY)));
+        sbuf.append(':');
+        sbuf.append(toTwoDigits(calendar.get(Calendar.MINUTE)));
+        sbuf.append(':');
+        sbuf.append(toTwoDigits(calendar.get(Calendar.SECOND)));
+        sbuf.append(',');
+        sbuf.getChars(start, sbuf.length(), lastTimeString, 0);
+        lastTimeMillis = rounded;
+        timeZone = tzFormat.format(calendar.getTime()).toCharArray();
+      }
+    } else {
+      sbuf.append(lastTimeString);
+    }
+    sbuf.append(String.format("%03d", millis));
+    sbuf.append(' ');
+    sbuf.append(timeZone);
+  }
+
+  private String toTwoDigits(int input) {
+    return String.format("%02d", input);
+  }
+
+  private void req(String key, StringBuffer buf, LoggingEvent event) {
+    Object val = event.getMDC(key);
+    buf.append(' ');
+    if (val != null) {
+      String s = val.toString();
+      if (0 <= s.indexOf(' ')) {
+        buf.append(QuotedString.BOURNE.quote(s));
+      } else {
+        buf.append(val);
+      }
+    } else {
+      buf.append('-');
+    }
+  }
+
+  private void opt(String key, StringBuffer buf, LoggingEvent event) {
+    Object val = event.getMDC(key);
+    if (val != null) {
+      buf.append(' ');
+      buf.append(val);
+    }
+  }
+
+  @Override
+  public boolean ignoresThrowable() {
+    return true;
+  }
+
+  @Override
+  public void activateOptions() {}
+}