Support log compression & max retention time (#294)

deps/oblib/src/lib/CMakeLists.txt

@@ -136,6 +136,7 @@ ob_set_subtarget(oblib_lib common
   oblog/ob_log_module.ipp
   oblog/ob_trace_log.cpp
   oblog/ob_warning_buffer.cpp
+  oblog/ob_log_compressor.cpp
   ob_name_id_def.cpp
   ob_replica_define.cpp
   profile/ob_atomic_event.cpp
@@ -234,6 +235,7 @@ ob_lib_add_pchs(lib
   oblog/ob_log.h
   oblog/ob_base_log_writer.h
   oblog/ob_async_log_struct.h
+  oblog/ob_log_compressor.h
   hash/fnv_hash.h
   coro/co_var.h
   time/Time.h

deps/oblib/src/lib/allocator/ob_mod_define.h

@@ -144,6 +144,7 @@ LABEL_ITEM_DEF(OB_BUFFER, Buffer)
 LABEL_ITEM_DEF(OB_THREAD_STORE, ThreadStore)
 LABEL_ITEM_DEF(OB_LOG_WRITER, LogWriter)
 LABEL_ITEM_DEF(OB_LOG_READER, LogReader)
+LABEL_ITEM_DEF(OB_LOG_COMPRESSOR, LogCompressor)
 LABEL_ITEM_DEF(OB_REGEX, Regex)
 LABEL_ITEM_DEF(OB_SLAB, Slab)
 LABEL_ITEM_DEF(OB_SLAVE_MGR, SlaveMgr)

deps/oblib/src/lib/oblog/ob_base_log_writer.cpp

@@ -63,10 +63,13 @@ int ObBaseLogWriter::init(const ObBaseLogWriterCfg& log_cfg)
     LOG_STDERR("Fail to allocate memory, max_buffer_item_cnt=%lu.\n", log_cfg.max_buffer_item_cnt_);
   } else if (0 != pthread_mutex_init(&log_mutex_, NULL)) {
     ret = OB_ERR_SYS;
+    LOG_STDERR("Failed to pthread_mutex_init.\n");
   } else if (0 != pthread_cond_init(&log_write_cond_, NULL)) {
     ret = OB_ERR_SYS;
+    LOG_STDERR("Failed to pthread_cond_init.\n");
   } else if (0 != pthread_cond_init(&log_flush_cond_, NULL)) {
     ret = OB_ERR_SYS;
+    LOG_STDERR("Failed to pthread_cond_init.\n");
   } else {
     flush_tid_ = 0;
     log_item_push_idx_ = 0;

deps/oblib/src/lib/oblog/ob_log.cpp

@@ -31,6 +31,8 @@
 #include "lib/container/ob_vector.h"
 #include "lib/coro/co.h"
 #include "lib/allocator/ob_fifo_allocator.h"
+#include "lib/oblog/ob_log_compressor.h"
+#include "lib/string/ob_string.h"
 
 using namespace oceanbase::lib;
 
@@ -62,6 +64,7 @@ static const int64_t POP_COMPENSATED_TIME[5] = {0, 1, 2, 3, 4};  // for pop time
 static int64_t last_check_file_ts = 0;  // last file sample timestamps
 static int64_t last_check_disk_ts = 0;  // last disk sample timestamps
 static const int64_t NORMAL_LOG_SIZE = 1 << 10;
+static const int64_t FILE_TIME_STR_LEN = 14;  // xxxx-xx-xx xx:xx:xx
 
 #if defined TC_REACH_TIME_INTERVAL
 #undef TC_REACH_TIME_INTERVAL
@@ -127,6 +130,41 @@ int process_thread_log_id_level_map(const char* str, const int32_t str_length)
   return ret;
 }
 
+inline void ob_log_unlink(const char *file_cstr)
+{
+  unlink(file_cstr);
+  ObString file_name(file_cstr);
+  unlink(ObLogCompressor::get_compression_file_name(file_name).ptr());
+}
+
+time_t get_file_time(const ObString &file_name)
+{
+  time_t ret_time = 0;
+  ObString time_str;
+  ObString remaining_string = file_name;
+  // Walk through the string from back to front until the timestamp found.
+  while (time_str.empty() && !remaining_string.empty()) {
+    const char *idx = remaining_string.reverse_find('.');
+    if (NULL != idx) {
+      ObString suffix_string = remaining_string.after(idx);
+      remaining_string = remaining_string.split_on(idx);
+      if (isdigit(suffix_string[0]) && suffix_string.length() == FILE_TIME_STR_LEN) {
+        time_str = suffix_string;
+      }
+    } else {
+      remaining_string.reset();
+    }
+  }
+  if (!time_str.empty()) {
+    struct tm tm;
+    strptime(time_str.ptr(), "%Y%m%d%H%M%S", &tm);
+    if (0 > (ret_time = mktime(&tm))) {
+      ret_time = 0;
+    }
+  }
+  return ret_time;
+}
+
 void ObLogIdLevelMap::set_level(const int8_t level)
 {
   non_mod_level_ = level;
@@ -410,8 +448,11 @@ const char* const ObLogger::errstr_[] = {"ERROR", "USER_ERR", "WARN", "INFO", "T
 ObLogger::ObLogger()
     : ObBaseLogWriter(),
       log_file_(),
+      log_compressor_(nullptr),
       max_file_size_(DEFAULT_MAX_FILE_SIZE),
       max_file_index_(0),
+      max_file_time_(0),
+      enable_file_compress_(false),
       name_id_map_(),
       id_level_map_(),
       wf_level_(OB_LOG_LEVEL_WARN),
@@ -866,6 +907,48 @@ void ObLogger::log_data(const char* mod_name, int32_t level, LogLocation locatio
   }
 }
 
+void ObLogger::remove_outdated_file(std::deque<std::string> &file_list)
+{
+  if (file_list.size() > 0 && max_file_time_ > 0) {
+    time_t min_time = time(NULL) - max_file_time_;
+
+    if (OB_LIKELY(0 == pthread_mutex_lock(&file_index_mutex_))) {
+      for (int i = 0; i < file_list.size(); i++) {
+        ObString file_name(file_list.front().c_str());
+        time_t file_time = get_file_time(file_name);
+        if (file_time < min_time) {
+          file_list.pop_front();
+          ob_log_unlink(file_name.ptr());
+        } else {
+          i = file_list.size();
+        }
+      }
+      (void)pthread_mutex_unlock(&file_index_mutex_);
+    }
+  }
+}
+
+void ObLogger::update_compression_file(std::deque<std::string> &file_list)
+{
+  if (enable_file_compress_ && NULL != log_compressor_) {
+    if (OB_LIKELY(0 == pthread_mutex_lock(&file_index_mutex_))) {
+      for (auto iter = file_list.begin(); iter != file_list.end(); iter++) {
+        ObString file_name(iter->c_str());
+        if (isdigit(file_name[file_name.length() - 1])) {
+          ObString compression_file_name = ObLogCompressor::get_compression_file_name(file_name).ptr();
+          if (0 != access(file_name.ptr(), F_OK) && 0 == access(compression_file_name.ptr(), F_OK)) {
+            iter->clear();
+            iter->assign(compression_file_name.ptr());
+          } else {
+            log_compressor_->append_log(file_name);
+          }
+        }
+      }
+      (void)pthread_mutex_unlock(&file_index_mutex_);
+    }
+  }
+}
+
 void ObLogger::rotate_log(
     const int64_t size, const bool redirect_flag, ObPLogFileStruct& log_struct, const ObPLogFDType fd_type)
 {
@@ -923,12 +1006,12 @@ void ObLogger::rotate_log(const char* filename, const ObPLogFDType fd_type, cons
           tm.tm_min,
           tm.tm_sec);
 
-      if (max_file_index_ > 0) {
+      if (max_file_index_ > 0 || max_file_time_ > 0) {
         if (OB_LIKELY(0 == pthread_mutex_lock(&file_index_mutex_))) {
-          if (file_list.size() >= max_file_index_) {
+          if (max_file_index_ > 0 && file_list.size() >= max_file_index_) {
             std::string oldFile = file_list.front();
             file_list.pop_front();
-            unlink(oldFile.c_str());
+            ob_log_unlink(oldFile.c_str());
           }
           file_list.push_back(old_log_file);
           (void)pthread_mutex_unlock(&file_index_mutex_);
@@ -958,12 +1041,12 @@ void ObLogger::rotate_log(const char* filename, const ObPLogFDType fd_type, cons
       }
 
       if (open_wf_flag_ && enable_wf_flag_) {
-        if (max_file_index_ > 0) {
+        if (max_file_index_ > 0 || max_file_time_ > 0) {
           if (OB_LIKELY(0 == pthread_mutex_lock(&file_index_mutex_))) {
-            if (wf_file_list.size() >= max_file_index_) {
+            if (max_file_index_ > 0 && wf_file_list.size() >= max_file_index_) {
               std::string old_wf_file = wf_file_list.front();
               wf_file_list.pop_front();
-              unlink(old_wf_file.c_str());
+              ob_log_unlink(old_wf_file.c_str());
             }
             wf_file_list.push_back(old_wf_log_file);
             (void)pthread_mutex_unlock(&file_index_mutex_);
@@ -980,6 +1063,20 @@ void ObLogger::rotate_log(const char* filename, const ObPLogFDType fd_type, cons
           }
         }
       }
+
+      if (max_file_time_ > 0) {
+        remove_outdated_file(file_list);
+        if (open_wf_flag_ && enable_wf_flag_) {
+          remove_outdated_file(wf_file_list);
+        }
+      }
+
+      if (enable_file_compress_ && NULL != log_compressor_) {
+        log_compressor_->append_log(ObString::make_string(old_log_file));
+        if (open_wf_flag_ && enable_wf_flag_) {
+          log_compressor_->append_log(ObString::make_string(old_wf_log_file));
+        }
+      }
     }
   }
   UNUSED(fd_type);
@@ -1053,11 +1150,38 @@ int ObLogger::set_max_file_index(int64_t max_file_index)
   return ret;
 }
 
+int ObLogger::set_max_file_time(int64_t max_file_time)
+{
+  int ret = OB_SUCCESS;
+  if (max_file_time < 0) {
+    max_file_time = 0;
+  }
+  max_file_time_ = max_file_time / 1000000L;  // usecond to second
+  if (max_file_time_ > 0 && rec_old_file_flag_) {
+    if (OB_FAIL(record_old_log_file())) {
+      LOG_WARN("Record old log file error", K(ret));
+    }
+  }
+  return ret;
+}
+
+int ObLogger::set_enable_file_compress(bool enable_file_compress)
+{
+  int ret = OB_SUCCESS;
+  enable_file_compress_ = enable_file_compress;
+  if (rec_old_file_flag_ && enable_file_compress_) {
+    if (OB_FAIL(record_old_log_file())) {
+      LOG_WARN("Record old log file error", K(ret));
+    }
+  }
+  return ret;
+}
+
 int ObLogger::set_record_old_log_file(bool rec_old_file_flag)
 {
   int ret = OB_SUCCESS;
   rec_old_file_flag_ = rec_old_file_flag;
-  if (rec_old_file_flag_ && max_file_index_ > 0) {
+  if (rec_old_file_flag_ && (max_file_index_ > 0 || max_file_time_ > 0)) {
     if (OB_FAIL(record_old_log_file())) {
       LOG_WARN("Record old log file error", K(ret));
     }
@@ -1065,6 +1189,17 @@ int ObLogger::set_record_old_log_file(bool rec_old_file_flag)
   return ret;
 }
 
+int ObLogger::set_log_compressor(ObLogCompressor *log_compressor)
+{
+  int ret = OB_SUCCESS;
+  if (NULL == log_compressor) {
+    ret = OB_INVALID_ARGUMENT;
+  } else {
+    log_compressor_ = log_compressor;
+  }
+  return ret;
+}
+
 //@brief string copy with dst's length and src's length checking and src trim.
 int64_t str_copy_trim(char* dst, const int64_t dst_length, const char* src, const int64_t src_length)
 {
@@ -1371,7 +1506,7 @@ void ObLogger::log_user_error_line_column(const UserMsgLevel user_msg_level, con
 int ObLogger::record_old_log_file()
 {
   int ret = OB_SUCCESS;
-  if (max_file_index_ <= 0 || !rec_old_file_flag_) {
+  if ((max_file_index_ <= 0 && max_file_time_ <= 0) || !rec_old_file_flag_) {
   } else {
     ObSEArray<FileName, 20> files;
     ObSEArray<FileName, 20> wf_files;
@@ -1509,25 +1644,38 @@ int ObLogger::add_files_to_list(
       file_list.clear();
       std::string oldFile;
       for (int64_t i = 0; OB_SUCC(ret) && i < files_arr->count(); ++i) {
-        if (file_list.size() >= max_file_index_) {
+        if (max_file_index_ > 0 && file_list.size() >= max_file_index_) {
           oldFile = file_list.front();
           file_list.pop_front();
-          unlink(oldFile.c_str());
+          ob_log_unlink(oldFile.c_str());
         }
         file_list.push_back(files_arr->at(i).file_name_);
       }
       wf_file_list.clear();
       std::string old_wf_file;
       for (int64_t i = 0; OB_SUCC(ret) && i < wf_files_arr->count(); ++i) {
-        if (wf_file_list.size() >= max_file_index_) {
+        if (max_file_index_ > 0 && wf_file_list.size() >= max_file_index_) {
           old_wf_file = wf_file_list.front();
           wf_file_list.pop_front();
-          unlink(old_wf_file.c_str());
+          ob_log_unlink(old_wf_file.c_str());
         }
         wf_file_list.push_back(wf_files_arr->at(i).file_name_);
       }
       (void)pthread_mutex_unlock(&file_index_mutex_);
     }
+
+    if (max_file_time_ > 0) {
+      remove_outdated_file(file_list);
+      if (open_wf_flag_ && enable_wf_flag_) {
+        remove_outdated_file(wf_file_list);
+      }
+    }
+    if (enable_file_compress_) {
+      update_compression_file(file_list);
+      if (open_wf_flag_ && enable_wf_flag_) {
+        update_compression_file(wf_file_list);
+      }
+    }
   }
   return ret;
 }

deps/oblib/src/lib/oblog/ob_log.h

@@ -54,6 +54,8 @@ namespace oceanbase {
 namespace common {
 class ObFIFOAllocator;
 class ObPLogItem;
+class ObString;
+class ObLogCompressor;
 
 #define OB_LOGGER ::oceanbase::common::ObLogger::get_logger()
 #define OB_LOG_NEED_TO_PRINT(level) (OB_UNLIKELY(OB_LOGGER.need_to_print(OB_LOG_LEVEL_##level)))
@@ -866,10 +868,16 @@ public:
   void set_max_file_size(int64_t max_file_size);
   //@brief Set the max number of log-files. If max_file_index = 0, no limit.
   int set_max_file_index(int64_t max_file_index = 0x0F);
+  //@brief Set the max retention time of log-files. If max_file_time = 0, no limit.
+  int set_max_file_time(int64_t max_file_time);
+  //@brief Set whether compress log-files. If this flag set, will compress all log files.
+  int set_enable_file_compress(bool enable_file_compress);
   //@brief Set whether record old log file. If this flag and max_file_index set,
   // will record log files in the directory for log file
   int set_record_old_log_file(bool rec_old_file_flag = false);
 
+  int set_log_compressor(ObLogCompressor *log_compressor);
+
   //@brief Get current time.
   static struct timeval get_cur_tv();
 
@@ -1012,6 +1020,9 @@ private:
   int add_files_to_list(void* files /*ObIArray<FileName> * */, void* wf_files /*ObIArray<FileName> * */,
       std::deque<std::string>& file_list, std::deque<std::string>& wf_file_list);
 
+  void remove_outdated_file(std::deque<std::string> &file_list);
+  void update_compression_file(std::deque<std::string> &file_list);
+
   void rotate_log(
       const int64_t size, const bool redirect_flag, ObPLogFileStruct& log_struct, const ObPLogFDType fd_type);
   //@brief Rename the log to a filename with fmt. And open a new file with the old, then add old file to file_list.
@@ -1061,9 +1072,12 @@ private:
   static RLOCAL(bool, disable_logging_);
 
   ObPLogFileStruct log_file_[MAX_FD_FILE];
+  ObLogCompressor *log_compressor_;
 
   int64_t max_file_size_;
   int64_t max_file_index_;
+  int64_t max_file_time_;         // max retention time(second) of log-file
+  int32_t enable_file_compress_;  // percentage of log-file to compress
 
   pthread_mutex_t file_size_mutex_;
   pthread_mutex_t file_index_mutex_;

deps/oblib/src/lib/oblog/ob_log_compressor.cpp

@@ -0,0 +1,265 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "lib/oblog/ob_log_compressor.h"
+#include "lib/ob_errno.h"
+#include "lib/utility/ob_macro_utils.h"
+#include "lib/oblog/ob_log_module.h"
+#include "lib/compress/ob_compressor_pool.h"
+#include "lib/string/ob_string.h"
+#include "lib/ob_define.h"
+#include "lib/thread/thread_pool.h"
+#include "lib/lock/ob_thread_cond.h"
+#include "lib/list/ob_list.h"
+#include "lib/lock/ob_mutex.h"
+#include "lib/allocator/ob_malloc.h"
+#include "lib/oblog/ob_async_log_struct.h"
+
+using namespace oceanbase::lib;
+
+namespace oceanbase {
+namespace common {
+/* Log files are divided into blocks and then compressed. The default block size is (2M - 1K).*/
+static const int32_t DEFAULT_COMPRESSION_BLOCK_SIZE = OB_MALLOC_BIG_BLOCK_SIZE;
+/* To prevent extreme cases where the files become larger after compression,
+ * the size of the decompression buffer needs to be larger than the original data.
+ * Specific size can refer to the ZSTD code implementation. */
+static const int32_t DEFAULT_COMPRESSION_BUFFER_SIZE =
+    DEFAULT_COMPRESSION_BLOCK_SIZE + DEFAULT_COMPRESSION_BLOCK_SIZE / 128 + 512 + 19;
+static const int32_t DEFAULT_FILE_NAME_SIZE = ObPLogFileStruct::MAX_LOG_FILE_NAME_SIZE;
+static const int32_t DEFAULT_LOG_QUEUE_DEPTH = 100000;
+
+ObLogCompressor::ObLogCompressor() : is_inited_(false), has_stoped_(true), compressor_(NULL)
+{}
+
+ObLogCompressor::~ObLogCompressor()
+{}
+
+int ObLogCompressor::init()
+{
+  int ret = OB_SUCCESS;
+  if (OB_UNLIKELY(is_inited_)) {
+    ret = OB_INIT_TWICE;
+    LOG_STDERR("The ObLogCompressor has been inited.\n");
+  } else if (OB_FAIL(file_list_.init(DEFAULT_LOG_QUEUE_DEPTH))) {
+    ret = OB_ERR_SYS;
+    LOG_STDERR("Failed to init file_list_.\n");
+  } else if (OB_FAIL(log_compress_cond_.init(ObWaitEventIds::DEFAULT_COND_WAIT))) {
+    ret = OB_ERR_SYS;
+    LOG_STDERR("Failed to init ObThreadCond.\n");
+  } else {
+    ObCompressor *ptr = NULL;
+    if (OB_FAIL(ObCompressorPool::get_instance().get_compressor(ZSTD_1_3_8_COMPRESSOR, ptr))) {
+      LOG_STDERR("Fail to get_compressor, err_code=%d.\n", ret);
+    } else {
+      compressor_ = ptr;
+      has_stoped_ = false;
+      if (OB_FAIL(start())) {
+        ret = OB_ERR_SYS;
+        LOG_STDERR("Fail to create log compression thread.\n");
+      } else {
+        is_inited_ = true;
+        LOG_STDOUT("Success to create thread.\n");
+      }
+    }
+    if (ret) {
+      log_compress_cond_.destroy();
+    }
+  }
+  if (!is_inited_) {
+    destroy();
+  }
+
+  return ret;
+}
+
+void ObLogCompressor::destroy()
+{
+  if (is_inited_) {
+    is_inited_ = false;
+    log_compress_cond_.lock();
+    file_list_.destroy();
+    has_stoped_ = true;
+    log_compress_cond_.signal();
+    log_compress_cond_.unlock();
+    wait();
+    log_compress_cond_.destroy();
+  }
+}
+
+ObString ObLogCompressor::get_compression_file_name(const ObString &file_name)
+{
+  ObString compression_file_name;
+  ObString suffix_str = ".zst";
+  int size = file_name.length();
+  if (size && 0 == file_name[size - 1]) {
+    size -= 1;
+  }
+  if (size > 0 && size + 1 + suffix_str.length() <= DEFAULT_FILE_NAME_SIZE) {
+    const char *idx = NULL;
+    if (size > 4 && NULL != (idx = file_name.reverse_find('.')) && idx != file_name.ptr() &&
+        0 == file_name.after(--idx).compare(suffix_str)) {
+    } else {
+      char *buf = (char *)ob_malloc(size + 1 + suffix_str.length(), ObModIds::OB_LOG_COMPRESSOR);
+      if (buf) {
+        compression_file_name.assign_buffer(buf, DEFAULT_FILE_NAME_SIZE);
+        if (size != compression_file_name.write(file_name.ptr(), size)) {
+          ob_free(buf);
+        } else {
+          compression_file_name.write(".zst\0", 5);
+        }
+      }
+    }
+  }
+  return compression_file_name;
+}
+
+ObCompressor *ObLogCompressor::get_compressor()
+{
+  return compressor_;
+}
+
+int ObLogCompressor::append_log(const ObString &file_name)
+{
+  int ret = OB_SUCCESS;
+  if (!is_inited_) {
+    ret = OB_NOT_INIT;
+    LOG_STDERR("The ObLogCompressor has not been inited.\n");
+  } else if (file_name.empty()) {
+    ret = OB_INVALID_ARGUMENT;
+  } else {
+    char *buf = (char *)ob_malloc(file_name.length() + 1 + sizeof(ObString), ObModIds::OB_LOG_COMPRESSOR);
+    if (buf) {
+      ObString *file_name_ptr = (ObString *)buf;
+      file_name_ptr->assign_buffer(buf + sizeof(ObString), file_name.length() + 1);
+      if (file_name.length() != file_name_ptr->write(file_name.ptr(), file_name.length()) ||
+          (0 != file_name[file_name.length() - 1] && 1 != file_name_ptr->write("\0", 1))) {
+        ob_free(buf);
+      } else {
+        log_compress_cond_.lock();
+        file_list_.push(file_name_ptr);
+        log_compress_cond_.signal();
+        log_compress_cond_.unlock();
+      }
+    }
+  }
+  return ret;
+}
+
+int ObLogCompressor::log_compress_block(
+    char *dest, size_t dest_size, const char *src, size_t src_size, size_t &return_size)
+{
+  int ret = OB_SUCCESS;
+  int64_t size = -1;
+  if (OB_FAIL(((ObCompressor *)compressor_)->compress(src, src_size, dest, dest_size, size))) {
+    LOG_STDERR("Failed to compress, err_code=%d.\n", ret);
+  } else {
+    return_size = size;
+  }
+  return ret;
+}
+
+void ObLogCompressor::log_compress()
+{
+  int ret = OB_SUCCESS;
+  static int sleep_us = 100 * 1000;  // 100ms
+  int src_size = DEFAULT_COMPRESSION_BLOCK_SIZE;
+  int dest_size = DEFAULT_COMPRESSION_BUFFER_SIZE;
+  char *src_buf = (char *)ob_malloc(src_size + dest_size, ObModIds::OB_LOG_COMPRESSOR);
+  char *dest_buf = src_buf + src_size;
+  if (!src_buf) {
+    LOG_STDERR("Failed to ob_malloc.\n");
+  } else {
+    while (!has_stoped_) {
+      ObString *file_name = NULL;
+      log_compress_cond_.lock();
+      while (0 >= file_list_.get_total() && !has_stoped_) {
+        log_compress_cond_.wait(0);
+      }
+      if (!has_stoped_) {
+        ret = file_list_.pop(file_name);
+      }
+      log_compress_cond_.unlock();
+
+      if (has_stoped_ || NULL == file_name || file_name->empty() || 0 != access(file_name->ptr(), F_OK)) {
+      } else {
+        ObString compression_file_name = get_compression_file_name(*file_name);
+        FILE *input_file = NULL;
+        FILE *output_file = NULL;
+        if (compression_file_name.empty()) {
+          LOG_STDERR("Failed to get_compression_file_name.\n");
+        } else if (NULL == (input_file = fopen(file_name->ptr(), "r"))) {
+          LOG_STDERR("Failed to fopen, err_code=%d.\n", errno);
+        } else if (NULL == (output_file = fopen(compression_file_name.ptr(), "w"))) {
+          fclose(input_file);
+          LOG_STDERR("Failed to fopen, err_code=%d.\n", errno);
+        } else {
+          size_t read_size = 0;
+          size_t write_size = 0;
+          while (OB_SUCC(ret) && !feof(input_file)) {
+            if ((read_size = fread(src_buf, 1, src_size, input_file)) > 0) {
+              if (OB_FAIL(log_compress_block(dest_buf, dest_size, src_buf, read_size, write_size))) {
+                LOG_STDERR("Failed to log_compress_block, err_code=%d.\n", ret);
+              } else if (write_size != fwrite(dest_buf, 1, write_size, output_file)) {
+                ret = OB_ERR_SYS;
+                LOG_STDERR("Failed to fwrite, err_code=%d.\n", errno);
+              }
+            }
+            usleep(sleep_us);
+          }
+          fclose(input_file);
+          fclose(output_file);
+          if (0 != access(file_name->ptr(), F_OK) || OB_SUCCESS != ret) {
+            unlink(compression_file_name.ptr());
+          } else {
+            unlink(file_name->ptr());
+          }
+        }
+      }
+    }
+  }
+  if (src_buf) {
+    ob_free(src_buf);
+  }
+}
+
+void ObLogCompressor::run1()
+{
+  lib::set_thread_name("syslog_compress");
+  log_compress();
+}
+
+int ObLogCompressor::start()
+{
+  ThreadPool::start();
+  return OB_SUCCESS;
+}
+
+void ObLogCompressor::stop()
+{
+  ThreadPool::stop();
+}
+
+void ObLogCompressor::wait()
+{
+  ThreadPool::wait();
+}
+
+}  // namespace common
+}  // namespace oceanbase

deps/oblib/src/lib/oblog/ob_log_compressor.h

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef OB_LOG_COMPRESSOR_H_
+#define OB_LOG_COMPRESSOR_H_
+
+#include "lib/thread/thread_pool.h"
+#include "lib/lock/ob_thread_cond.h"
+#include "lib/list/ob_list.h"
+#include "lib/queue/ob_fixed_queue.h"
+
+namespace oceanbase {
+namespace common {
+
+class ObCompressor;
+class ObString;
+class ObMalloc;
+
+class ObLogCompressor final : public lib::ThreadPool {
+public:
+  ObLogCompressor();
+  virtual ~ObLogCompressor();
+  static ObString get_compression_file_name(const ObString &file_name);
+  int init();
+  void destroy();
+  int append_log(const ObString &file_name);
+  ObCompressor *get_compressor();
+
+private:
+  int log_compress_block(char *dest, size_t dest_size, const char *src, size_t src_size, size_t &return_size);
+  void log_compress();
+  void run1() override;
+  int start() override;
+  void stop() override;
+  void wait() override;
+
+private:
+  bool is_inited_;
+  bool has_stoped_;
+  ObFixedQueue<ObString> file_list_;
+  ObThreadCond log_compress_cond_;
+  ObCompressor *compressor_;
+};
+
+}  // namespace common
+}  // namespace oceanbase
+
+#endif /* OB_LOG_COMPRESSOR_H_ */

deps/oblib/unittest/CMakeLists.txt

@@ -5,7 +5,7 @@ target_link_libraries(oblib_testbase INTERFACE -lgmock -lgtest)
 function(oblib_addtest mainfile)
   get_filename_component(testname ${mainfile} NAME_WE)
   add_executable(${testname} ${ARGV})
-  target_link_libraries(${testname} PRIVATE oblib oblib_testbase -static-libgcc -static-libstdc++)
+  target_link_libraries(${testname} PRIVATE easy aio -L${DEP_DIR}/lib/mariadb mariadb oblib oblib_testbase -static-libgcc -static-libstdc++)
 endfunction()
 
 add_subdirectory(lib)

deps/oblib/unittest/lib/CMakeLists.txt

@@ -92,6 +92,7 @@ oblib_addtest(net/test_ob_addr.cpp)
 oblib_addtest(number/test_number_v2.cpp)
 oblib_addtest(oblog/test_base_log_buffer.cpp)
 oblib_addtest(oblog/test_base_log_writer.cpp)
+oblib_addtest(oblog/test_ob_log_compressor.cpp)
 oblib_addtest(oblog/test_ob_log_obj.cpp)
 oblib_addtest(oblog/test_ob_log_performance.cpp)
 oblib_addtest(profile/test_ob_trace_id.cpp)

deps/oblib/unittest/lib/oblog/test_ob_log_compressor.cpp

@@ -0,0 +1,108 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#include <gtest/gtest.h>
+#include "lib/oblog/ob_log_compressor.h"
+#include "lib/compress/ob_compressor_pool.h"
+#include "lib/ob_errno.h"
+#include "lib/string/ob_string.h"
+
+using namespace oceanbase::lib;
+
+namespace oceanbase {
+namespace common {
+
+TEST(ObLogCompressor, normal)
+{
+  int ret = OB_SUCCESS;
+  int test_count = 1000;
+  int test_size = test_count * sizeof(int);
+  ObLogCompressor log_compressor;
+  ObCompressor *compressor;
+
+  // normal init
+  ret = log_compressor.init();
+  ASSERT_EQ(OB_SUCCESS, ret);
+
+  // repeat init
+  ret = log_compressor.init();
+  ASSERT_EQ(OB_INIT_TWICE, ret);
+
+  // prepare data
+  ObString file_name = "test_ob_log_compressor_file";
+  FILE *input_file = fopen(file_name.ptr(), "w");
+  ASSERT_EQ(true, NULL != input_file);
+  int data[test_count];
+  for (int i = 0; i < test_count; i++) {
+    data[i] = i;
+  }
+  ret = fwrite(data, 1, test_size, input_file);
+  ASSERT_EQ(test_size, ret);
+  fclose(input_file);
+
+  // normal append
+  ret = log_compressor.append_log(file_name);
+  ASSERT_EQ(OB_SUCCESS, ret);
+
+  // get compression result
+  sleep(2);
+  ObString compression_file_name = log_compressor.get_compression_file_name(file_name);
+  ASSERT_EQ(0, access(compression_file_name.ptr(), F_OK));
+  FILE *output_file = fopen(compression_file_name.ptr(), "r");
+  ASSERT_EQ(true, NULL != output_file);
+  int buf_size = test_size + 512;
+  int read_size = 0;
+  void *buf = malloc(buf_size);
+  ASSERT_EQ(true, NULL != buf);
+  read_size = fread(buf, 1, buf_size, output_file);
+  ASSERT_GT(read_size, 0);
+  fclose(output_file);
+
+  // check decompression result
+  int64_t decomp_size = 0;
+  int decomp_buf_size = buf_size;
+  int *decomp_buf = (int *)malloc(decomp_buf_size);
+  ASSERT_EQ(true, NULL != decomp_buf);
+  compressor = (ObCompressor *)log_compressor.get_compressor();
+  ASSERT_EQ(true, NULL != compressor);
+  ret = compressor->decompress((char *)buf, read_size, (char *)decomp_buf, decomp_buf_size, decomp_size);
+  ASSERT_EQ(OB_SUCCESS, ret);
+  ASSERT_EQ(test_size, decomp_size);
+  for (int i = 0; i < test_count; i++) {
+    ASSERT_EQ(*(decomp_buf + i), i);
+  }
+
+  // clear environment
+  free(buf);
+  free(decomp_buf);
+  ASSERT_NE(0, access(file_name.ptr(), F_OK));
+  ASSERT_EQ(0, access(compression_file_name.ptr(), F_OK));
+  unlink(compression_file_name.ptr());
+
+  // destroy and init
+  log_compressor.destroy();
+  ret = log_compressor.init();
+  ASSERT_EQ(OB_SUCCESS, ret);
+
+  // repeat destroy
+  log_compressor.destroy();
+  log_compressor.destroy();
+}
+
+}  // namespace common
+}  // namespace oceanbase
+
+int main(int argc, char **argv)
+{
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}

src/observer/ob_server.cpp

@@ -74,6 +74,7 @@
 #include "observer/ob_server_memory_cutter.h"
 #include "share/ob_bg_thread_monitor.h"
 #include "observer/omt/ob_tenant_timezone_mgr.h"
+#include "lib/oblog/ob_log_compressor.h"
 //#include "share/ob_ofs.h"
 
 using namespace oceanbase::lib;
@@ -172,10 +173,19 @@ int ObServer::init(const ObServerOptions& opts, const ObPLogWriterCfg& log_cfg)
   // set large page param
   ObLargePageHelper::set_param(config_.use_large_pages);
 
+  if (OB_SUCC(ret)) {
+    if (OB_FAIL(log_compressor_.init())) {
+      LOG_ERROR("log compressor init error.", K(ret));
+    }
+  }
+
   if (OB_SUCC(ret)) {
     if (OB_FAIL(OB_LOGGER.init(log_cfg))) {
       LOG_ERROR("async log init error.", K(ret));
       ret = OB_ELECTION_ASYNC_LOG_WARN_INIT;
+    } else if (OB_FAIL(OB_LOGGER.set_log_compressor(&log_compressor_))) {
+      LOG_ERROR("set log compressor error.", K(ret));
+      ret = OB_ELECTION_ASYNC_LOG_WARN_INIT;
     }
   }
 
@@ -420,6 +430,8 @@ void ObServer::destroy()
     LOG_WARN("memory dump destroyed");
     tenant_timezone_mgr_.destroy();
     LOG_WARN("tenant timezone manager destroyed");
+    log_compressor_.destroy();
+    LOG_WARN("log compressor destroyed");
     LOG_WARN("destroy observer end");
     has_destroy_ = true;
   }
@@ -951,10 +963,14 @@ int ObServer::init_pre_setting()
   // oblog configuration
   if (OB_SUCC(ret)) {
     const int max_log_cnt = static_cast<int32_t>(config_.max_syslog_file_count);
+    const int64_t max_log_time = config_.max_syslog_file_time;
+    const bool enable_log_compress = config_.enable_syslog_file_compress;
     const bool record_old_log_file = config_.enable_syslog_recycle;
     const bool log_warn = config_.enable_syslog_wf;
     const bool enable_async_syslog = config_.enable_async_syslog;
     OB_LOGGER.set_max_file_index(max_log_cnt);
+    OB_LOGGER.set_max_file_time(max_log_time);
+    OB_LOGGER.set_enable_file_compress(enable_log_compress);
     OB_LOGGER.set_record_old_log_file(record_old_log_file);
     LOG_INFO("Whether record old log file", K(record_old_log_file));
     OB_LOGGER.set_log_warn(log_warn);

src/observer/ob_server.h

@@ -46,6 +46,7 @@
 #include "observer/ob_service.h"
 #include "observer/ob_server_reload_config.h"
 #include "observer/ob_root_service_monitor.h"
+#include "lib/oblog/ob_log_compressor.h"
 
 namespace oceanbase {
 namespace omt {
@@ -426,6 +427,7 @@ private:
   blocksstable::ObStorageEnv storage_env_;
   share::ObSchemaStatusProxy schema_status_proxy_;
   ObSignalWorker sig_worker_;
+  common::ObLogCompressor log_compressor_;
 
   bool is_log_dir_empty_;
   sql::ObConnectResourceMgr conn_res_mgr_;

src/share/config/ob_reload_config.cpp

@@ -32,6 +32,10 @@ int ObReloadConfig::reload_ob_logger_set()
           K(ret));
     } else if (OB_FAIL(OB_LOGGER.set_max_file_index(static_cast<int32_t>(conf_->max_syslog_file_count)))) {
       OB_LOG(ERROR, "fail to set_max_file_index", K(conf_->max_syslog_file_count.get()), K(ret));
+    } else if (OB_FAIL(OB_LOGGER.set_max_file_time(conf_->max_syslog_file_time))) {
+      OB_LOG(ERROR, "fail to set_max_file_time", K(conf_->max_syslog_file_time.get()), K(ret));
+    } else if (OB_FAIL(OB_LOGGER.set_enable_file_compress(conf_->enable_syslog_file_compress))) {
+      OB_LOG(ERROR, "fail to set_enable_file_compress", K(conf_->enable_syslog_file_compress.str()), K(ret));
     } else if (OB_FAIL(OB_LOGGER.set_record_old_log_file(conf_->enable_syslog_recycle))) {
       OB_LOG(ERROR, "fail to set_record_old_log_file", K(conf_->enable_syslog_recycle.str()), K(ret));
     } else {

src/share/parameter/ob_parameter_seed.ipp

@@ -203,6 +203,15 @@ DEF_INT(cluster_id, OB_CLUSTER_PARAMETER, "0", "[1,4294901759]", "ID of the clus
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
 DEF_STR(obconfig_url, OB_CLUSTER_PARAMETER, "", "URL for OBConfig service",
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
+DEF_BOOL(enable_syslog_file_compress, OB_CLUSTER_PARAMETER, "False",
+    "specifies whether to compress archive log files"
+    "Value: True:turned on; False: turned off",
+    ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
+DEF_TIME(max_syslog_file_time, OB_CLUSTER_PARAMETER, "0s", "[0s, 3650d]",
+    "specifies the maximum retention time of the log files. "
+    "When this value is set to 0s, no log file will be removed due to time. "
+    "with default 0s. Range: [0s, 3650d]",
+    ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
 DEF_LOG_LEVEL(syslog_level, OB_CLUSTER_PARAMETER, "INFO",
     "specifies the current level of logging. There are DEBUG, TRACE, INFO, WARN, USER_ERR, ERROR, six different log "
     "levels.",
@@ -214,7 +223,7 @@ DEF_INT(max_syslog_file_count, OB_CLUSTER_PARAMETER, "0", "[0,]",
     "specifies the maximum number of the log files "
     "that can co-exist before the log file recycling kicks in. "
     "Each log file can occupy at most 256MB disk space. "
-    "When this value is set to 0, no log file will be removed. Range: [0, +∞) in integer",
+    "When this value is set to 0, no log file will be removed due to the file count. Range: [0, +∞) in integer",
     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
 DEF_BOOL(enable_async_syslog, OB_CLUSTER_PARAMETER, "True",
     "specifies whether use async log for observer.log, elec.log and rs.log",

test/mysql_test/test_suite/inner_table/r/mysql/all_virtual_sys_parameter_stat.result

@@ -98,6 +98,7 @@ enable_separate_sys_clog
 enable_smooth_leader_switch
 enable_sql_audit
 enable_sql_operator_dump
+enable_syslog_file_compress
 enable_syslog_recycle
 enable_syslog_wf
 enable_sys_table_ddl
@@ -145,6 +146,7 @@ max_px_worker_count
 max_stale_time_for_weak_consistency
 max_string_print_length
 max_syslog_file_count
+max_syslog_file_time
 memory_chunk_cache_size
 memory_limit
 memory_limit_percentage