Merge 145824 "IndexedDB: Histogram leveldb open errors."

Source/WebCore/platform/leveldb/LevelDBDatabase.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 10 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "LevelDBDatabase.h"
 
 #if USE(LEVELDB)
 
+#include "HistogramSupport.h"
 #include "LevelDBComparator.h"
 #include "LevelDBIterator.h"
 #include "LevelDBSlice.h"
 #include "LevelDBWriteBatch.h"
 #include "Logging.h"
 #include <helpers/memenv/memenv.h>
 #include <leveldb/comparator.h>
 #include <leveldb/db.h>
 #include <leveldb/env.h>
 #include <leveldb/slice.h>
@@ skipping 108 matching lines @@
 }
 
 PassOwnPtr<LevelDBDatabase> LevelDBDatabase::open(const String& fileName, const LevelDBComparator* comparator)
 {
     OwnPtr<ComparatorAdapter> comparatorAdapter = adoptPtr(new ComparatorAdapter(comparator));
 
     leveldb::DB* db;
     const leveldb::Status s = openDB(comparatorAdapter.get(), leveldb::IDBEnv(), fileName, &db);
 
     if (!s.ok()) {
+        enum {
+            LevelDBNotFound,
+            LevelDBCorruption,
+            LevelDBIOError,
+            LevelDBOther,
+            LevelDBMaxError
+        };
+        int levelDBError = LevelDBOther;
+        if (s.IsNotFound())
+            levelDBError = LevelDBNotFound;
+        else if (s.IsCorruption())
+            levelDBError = LevelDBCorruption;
+        else if (s.IsIOError())
+            levelDBError = LevelDBIOError;
+        HistogramSupport::histogramEnumeration("WebCore.IndexedDB.LevelDBOpenErrors", levelDBError, LevelDBMaxError);
+
         LOG_ERROR("Failed to open LevelDB database from %s: %s", fileName.ascii().data(), s.ToString().c_str());
         return nullptr;
     }
 
     OwnPtr<LevelDBDatabase> result = adoptPtr(new LevelDBDatabase);
     result->m_db = adoptPtr(db);
     result->m_comparatorAdapter = comparatorAdapter.release();
     result->m_comparator = comparator;
 
     return result.release();
@@ skipping 168 matching lines @@
 }
 
 const LevelDBComparator* LevelDBDatabase::comparator() const
 {
     return m_comparator;
 }
 
 }
 
 #endif