/Logger ODB tree
Links
Creating the /logger tree
The /Logger ODB tree is created when the mlogger utility is started for the first time. The keys will be filled with default values which users may change as required to customize their experiments. See keys in the ODB /Logger tree for more information on each key.
Purpose
Most of the keys in the /Logger ODB tree are used to customize logging of the data. There are also keys to customize the Messaging system. The /Logger tree also may contain optional keys /Logger/Elog dir and /Logger/History dir relevent to storing the History and Elog data files.
The optional subtrees /Logger/Runlog/SQL is used when logging to a mySQL database and /Logger/Runlog/ASCIIfor writing to an ASCII file.
Example
The following example shows a typical /Logger ODB tree obtained using the odbedit ls command. See keys in the ODB /Logger tree for more information on each key.
Logger
Data dir /home/expt/online/data
Write data n
ODB Dump n
ODB Dump File run%05d.json
ODB Last Dump File last.json
Auto restart n
Auto restart delay 0
Tape message y
Channels
0
Settings
Active y
Type Disk
Filename run%05d.mid
Format MIDAS
Compression 0
ODB dump y
ODB dump format json
Log messages 0
Buffer SYSTEM
Event ID -1
Trigger mask -1
Event limit 0
Byte limit 0
Subrun Byte limi0
Tape capacity 0
Subdir format
Current filenamerun01434.mid.lz4
Data checksum CRC32C (one of: NONE CRC32C SHA256 SHA512 ZLIB)
File checksum CRC32C (one of: NONE CRC32C SHA256 SHA512 ZLIB)
Compress lz4 (one of: none gzip lz4 bzip2 pbzip2)
Output FILE (one of: NULL FILE FTP ROOT PIPE)
Gzip compression0
Bzip2 compressio0
Pbzip2 num cpu 0
Pbzip2 compressi0
Pbzip2 options
Statistics
Events written 0
Bytes written 0
Bytes written un0
Bytes written to14419470360
Bytes written su0
Files written 31
Disk level 0.8555651332246208
Runlog
SQL
Create database n
Write data n
Hostname localhost
Username root
Password
Database vslice
Table Runlog
Logfile sql.log
Links BOR
Run number -> /Runinfo/Run number
1521
Start time -> /Runinfo/Start time
Thu Nov 17 03:13:10 2022
Links EOR
Stop time -> /Runinfo/Stop time
Thu Nov 17 03:00:39 2022
ASCII
Write data y
filename runlog.log
Links BOR
Start time -> /Runinfo/Start time
Thu Nov 17 03:13:10 2022
Run number -> /Runinfo/Run number
1521
Links EOR
Stop time -> /Runinfo/Stop time
Thu Nov 17 03:00:39 2022
Comment -> /Experiment/Edit on start/Comment
FEP Hit Finder
History
MIDAS
Type MIDAS
Active y
Debug 0
PerVariableHistory 0
History dir
ODBC
Type ODBC
Active n
Debug 0
Writer_ODBC_DSN history_writer
Reader_ODBC_DSN history_reader
SQLITE
Type SQLITE
Active n
Debug 0
Sqlite dir
History dir
MYSQL
Type MYSQL
Active n
Debug 0
MYSQL Writer mysql_writer.txt
MYSQL Reader mysql_reader.txt
FILE
Type FILE
Active n
Debug 0
History dir
Run duration 0
Next subrun n
Subrun duration 0
Message file date format json
Message dir
History dir
Keys in the /Logger tree
Click on the following links for a description of the