1 files changed, 51 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/loggerjnicallback.h b/src/rocksdb/java/rocksjni/loggerjnicallback.h
new file mode 100644
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--- /dev/null
+++ b/src/rocksdb/java/rocksjni/loggerjnicallback.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+//
+// This file implements the callback "bridge" between Java and C++ for
+// ROCKSDB_NAMESPACE::Logger
+
+#ifndef JAVA_ROCKSJNI_LOGGERJNICALLBACK_H_
+#define JAVA_ROCKSJNI_LOGGERJNICALLBACK_H_
+
+#include <jni.h>
+
+#include <memory>
+#include <string>
+
+#include "port/port.h"
+#include "rocksdb/env.h"
+#include "rocksjni/jnicallback.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+class LoggerJniCallback : public JniCallback, public Logger {
+ public:
+  LoggerJniCallback(JNIEnv* env, jobject jLogger);
+  ~LoggerJniCallback();
+
+  using Logger::GetInfoLogLevel;
+  using Logger::SetInfoLogLevel;
+  // Write an entry to the log file with the specified format.
+  virtual void Logv(const char* format, va_list ap);
+  // Write an entry to the log file with the specified log level
+  // and format.  Any log with level under the internal log level
+  // of *this (see @SetInfoLogLevel and @GetInfoLogLevel) will not be
+  // printed.
+  virtual void Logv(const InfoLogLevel log_level, const char* format,
+                    va_list ap);
+
+ private:
+  jmethodID m_jLogMethodId;
+  jobject m_jdebug_level;
+  jobject m_jinfo_level;
+  jobject m_jwarn_level;
+  jobject m_jerror_level;
+  jobject m_jfatal_level;
+  jobject m_jheader_level;
+  std::unique_ptr<char[]> format_str(const char* format, va_list ap) const;
+};
+}  // namespace ROCKSDB_NAMESPACE
+
+#endif  // JAVA_ROCKSJNI_LOGGERJNICALLBACK_H_