enforce log retention policies

* for access logs, save meta-data about the log file itself
  in a simple format.
* implement a proof-of-concept shell script that removes
  log files after one month.
* ensure retention enforcer is started when services start
* note that retention enforcer will continue running even
  after services stop, but it has protection to ensure that
  it won't multiply endlessly.

1 files changed, 29 insertions, 0 deletions

diff --git a/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java b/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java
new file mode 100644
index 00000000000..4dd7bd0978c
--- /dev/null
+++ b/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java
@@ -0,0 +1,29 @@
+// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.log;
+
+import java.io.File;
+import static com.yahoo.vespa.defaults.Defaults.getDefaults;
+import org.junit.Test;
+
+/**
+ * @author arnej
+ */
+public class LogFileDbTest {
+
+    @Test
+    public void canSave() {
+        System.err.println("VH: "+System.getenv("VESPA_HOME"));
+        File dir = new File(getDefaults().underVespaHome(LogFileDb.DBDIR));
+        dir.mkdirs();
+        if (dir.isDirectory()) {
+            System.err.println("using directory: "+dir);
+            new File(getDefaults().underVespaHome("logs/extra")).mkdirs();
+            String fn = getDefaults().underVespaHome("logs/extra/foo-bar.log");
+            LogFileDb.nowLoggingTo(fn);
+            fn = getDefaults().underVespaHome("logs/extra/stamped-1.log");
+            LogFileDb.nowLoggingTo(fn);
+        } else {
+            System.err.println("cannot create directory: "+dir);
+        }
+    }
+}