OpenSAF LOG

1. Introduction.

In OpenSAF, the Log Service (LOGSv) provides a standardized means for applications to write log messages.

There are two options to configure LOGSv:

The saflogger program is used to write OpenSAF log.

2. Configure.

2.1. Using IMM object.

The configurations can be specified through an object of OpenSafLogConfig class. The object name is logConfig=1,safApp=safLogService.

   
$ immfind -c OpenSafLogConfig
logConfig=1,safApp=safLogService

$ immlist logConfig=1,safApp=safLogService
Name                                               Type         Value(s)
========================================================================
logStreamSystemLowLimit                            SA_UINT32_T  0 (0x0)
logStreamSystemHighLimit                           SA_UINT32_T  0 (0x0)
logStreamFileFormat                                SA_STRING_T  <Empty>
logStreamAppLowLimit                               SA_UINT32_T  0 (0x0)
logStreamAppHighLimit                              SA_UINT32_T  0 (0x0)
logRootDirectory                                   SA_STRING_T  /var/log/opensaf/saflog 
logRecordDestinationConfiguration                  SA_STRING_T  <Empty>
logMaxLogrecsize                                   SA_UINT32_T  1024 (0x400)
logMaxApplicationStreams                           SA_UINT32_T  64 (0x40)
logFileSysConfig                                   SA_UINT32_T  1 (0x1)
logFileIoTimeout                                   SA_UINT32_T  500 (0x1f4)
logDataGroupname                                   SA_STRING_T  <Empty>
logConfig                                          SA_STRING_T  logConfig=1 
SaImmAttrImplementerName                           SA_STRING_T  safLogService 
SaImmAttrClassName                                 SA_STRING_T  OpenSafLogConfig 
SaImmAttrAdminOwnerName                            SA_STRING_T  IMMLOADER

2.1. Using environment variable.

The configurations can be set in the /etc/opensaf/logd.conf file.

  
export LGSV_ENV_HEALTHCHECK_KEY="Default"
export LOGSV_ROOT_DIRECTORY=$pkglogdir/saflog
export LOGSV_MAX_LOGRECSIZE=1024
args="--loglevel=info"

3. saflogger.

Make an alarm log message.

  
$ saflogger --alarm "hello alarm"

$ grep -r "hello alarm" /var/log/opensaf/saflog
/var/log/opensaf/saflog/saLogAlarm_20241013_140309.log: ... "hello alarm"

Make a system log message.

  
$ saflogger --system "hello system"

Make an application log message.

  
$ saflogger --application -f myApp "hello application"
/var/log/opensaf/saflog/saflogger/TestApp_20241013_150159_20241013_150159.log: ... "hello application"

References