ceph/src/rocksdb/java/rocksjni/loggerjnicallback.h

   1 // Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5 //
   6 // This file implements the callback "bridge" between Java and C++ for
   7 // rocksdb::Logger
   8
   9 #ifndef JAVA_ROCKSJNI_LOGGERJNICALLBACK_H_
  10 #define JAVA_ROCKSJNI_LOGGERJNICALLBACK_H_
  11
  12 #include <jni.h>
  13 #include <memory>
  14 #include <string>
  15 #include "rocksjni/jnicallback.h"
  16 #include "port/port.h"
  17 #include "rocksdb/env.h"
  18
  19 namespace rocksdb {
  20
  21   class LoggerJniCallback : public JniCallback, public Logger {
  22    public:
  23      LoggerJniCallback(JNIEnv* env, jobject jLogger);
  24      ~LoggerJniCallback();
  25
  26      using Logger::SetInfoLogLevel;
  27      using Logger::GetInfoLogLevel;
  28      // Write an entry to the log file with the specified format.
  29      virtual void Logv(const char* format, va_list ap);
  30      // Write an entry to the log file with the specified log level
  31      // and format.  Any log with level under the internal log level
  32      // of *this (see @SetInfoLogLevel and @GetInfoLogLevel) will not be
  33      // printed.
  34      virtual void Logv(const InfoLogLevel log_level,
  35          const char* format, va_list ap);
  36
  37    private:
  38      jmethodID m_jLogMethodId;
  39      jobject m_jdebug_level;
  40      jobject m_jinfo_level;
  41      jobject m_jwarn_level;
  42      jobject m_jerror_level;
  43      jobject m_jfatal_level;
  44      jobject m_jheader_level;
  45      std::unique_ptr<char[]> format_str(const char* format, va_list ap) const;
  46   };
  47 }  // namespace rocksdb
  48
  49 #endif  // JAVA_ROCKSJNI_LOGGERJNICALLBACK_H_