Turn on LevelDB logging

third_party/leveldatabase/env_chromium.cc

 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
 #include <deque>
 #include <errno.h>
 #include <stdio.h>
 #include "base/at_exit.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "base/platform_file.h"
 #include "base/process_util.h"
 #include "base/stringprintf.h"
 #include "base/synchronization/lock.h"
 #include "base/sys_info.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
+#include "chromium_logger.h"
 #include "leveldb/env.h"
 #include "leveldb/slice.h"
 #include "port/port.h"
 #include "util/logging.h"
 
 #if defined(OS_WIN)
 #include <io.h>
 #include "base/win/win_util.h"
 #endif
 
@@ skipping 384 matching lines @@
                                                &test_directory_)) {
         mu_.Release();
         return Status::IOError("Could not create temp directory.");
       }
     }
     *path = FilePathToString(test_directory_);
     mu_.Release();
     return Status::OK();
   }
 
-  class ChromiumLogger : public Logger {
-   public:
-    ChromiumLogger(const std::string& filename) : filename_(filename) {
+  virtual Status NewLogger(const std::string& fname, Logger** result) {
+    FILE* f = fopen_internal(fname.c_str(), "w");
+    if (f == NULL) {
+      *result = NULL;
+      return Status::IOError(fname, strerror(errno));
+    } else {
+      *result = new ChromiumLogger(f);
+      return Status::OK();
     }
-
-    virtual void Logv(const char* format, va_list ap) {
-      VLOG(5) << "LevelDB: " << filename_ << " " << base::StringPrintV(format, ap);
-    }
-
-   private:
-    std::string filename_;
-  };
-
-  virtual Status NewLogger(const std::string& fname, Logger** result) {
-    *result = new ChromiumLogger(fname);
-    return Status::OK();
   }
 
   virtual uint64_t NowMicros() {
     return ::base::TimeTicks::Now().ToInternalValue();
   }
 
   virtual void SleepForMicroseconds(int micros) {
     // Round up to the next millisecond.
     ::base::PlatformThread::Sleep(::base::TimeDelta::FromMicroseconds(micros));
   }
@@ skipping 94 matching lines @@
 ::base::LazyInstance<ChromiumEnv>::Leaky
     default_env = LAZY_INSTANCE_INITIALIZER;
 
 }
 
 Env* Env::Default() {
   return default_env.Pointer();
 }
 
 }