From 8c20acd50f36f475f34f9699bf45f45241d7b4da Mon Sep 17 00:00:00 2001
From: Henning Baldersheim <balder@yahoo-inc.com>
Date: Wed, 10 Oct 2018 13:29:05 +0200
Subject: LogFileDB must ensure directory exists.

---
 .../src/main/java/com/yahoo/log/LogFileDb.java     | 14 ++++++++++---
 .../src/test/java/com/yahoo/log/LogFileDbTest.java | 23 +++++++++++-----------
 2 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/vespalog/src/main/java/com/yahoo/log/LogFileDb.java b/vespalog/src/main/java/com/yahoo/log/LogFileDb.java
index d0fa64805bf..4d26f7c0da9 100644
--- a/vespalog/src/main/java/com/yahoo/log/LogFileDb.java
+++ b/vespalog/src/main/java/com/yahoo/log/LogFileDb.java
@@ -4,6 +4,7 @@ package com.yahoo.log;
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static java.nio.file.StandardOpenOption.*;
 
+import java.io.File;
 import java.io.OutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -28,12 +29,18 @@ public class LogFileDb {
     }
 
     private static OutputStream metaFile() throws java.io.IOException {
-        String fn = getDefaults().underVespaHome(DBDIR + "logfiles." + dayStamp());
+        File dir = new File(getDefaults().underVespaHome(DBDIR));
+        if (!dir.exists()) {
+            if (!dir.mkdirs()) {
+                System.err.println("Failed creating logfiledb directory '" + dir.getPath() + "'.");
+            }
+        }
+        String fn = dir + "logfiles." + dayStamp();
         Path path = Paths.get(fn);
         return Files.newOutputStream(path, CREATE, APPEND);
     }
 
-    public static void nowLoggingTo(String filename) {
+    public static boolean nowLoggingTo(String filename) {
         if (filename.contains("\n")) {
             throw new IllegalArgumentException("Cannot use filename with newline: "+filename);
         }
@@ -44,7 +51,8 @@ public class LogFileDb {
             out.write(data);
         } catch (java.io.IOException e) {
             System.err.println("Saving meta-data about logfile "+filename+" failed: "+e);
-            // ignore
+            return false;
         }
+        return true;
     }
 }
diff --git a/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java b/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java
index 4dd7bd0978c..021a12774e9 100644
--- a/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java
+++ b/vespalog/src/test/java/com/yahoo/log/LogFileDbTest.java
@@ -3,8 +3,12 @@ package com.yahoo.log;
 
 import java.io.File;
 import static com.yahoo.vespa.defaults.Defaults.getDefaults;
+
+import com.yahoo.io.IOUtils;
 import org.junit.Test;
 
+import static org.junit.Assert.assertTrue;
+
 /**
  * @author arnej
  */
@@ -14,16 +18,13 @@ public class LogFileDbTest {
     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);
-        }
+        assertTrue(!dir.exists() || IOUtils.recursiveDeleteDir(dir));
+        System.err.println("using directory: "+dir);
+        File extraDir = new File(getDefaults().underVespaHome("logs/extra"));
+        assertTrue(!extraDir.exists() || IOUtils.recursiveDeleteDir(extraDir));
+        String fn = getDefaults().underVespaHome("logs/extra/foo-bar.log");
+        assertTrue(LogFileDb.nowLoggingTo(fn));
+        fn = getDefaults().underVespaHome("logs/extra/stamped-1.log");
+        assertTrue(LogFileDb.nowLoggingTo(fn));
     }
 }
-- 
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