/Logger ODB tree: Difference between revisions

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(The midas documentation has moved to https://midas.triumf.ca/docs/)
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{{Pagelinks}}
The midas documentation has moved. See [https://midas.triumf.ca/docs/develop/reference/reference/odb_keys/#logger /Logger] on the ODB keys page and [https://midas.triumf.ca/docs/develop/features/storing_data/data_logging/ Data logging: overview] for the new documentation about the /Logger ODB keys.
 
=== Links ===
<div style="column-count:3;-moz-column-count:3;-webkit-column-count:3">
* [[Keys in the ODB /Logger tree| keys in /Logger tree]]
* [[Keys in the ODB /Logger/Channels subtree |keys in /Logger/Channels subtree]]
* [[Keys in the ODB /Logger/Runlog subtree |keys in /Logger/Runlog subtree]]
* [[Keys in the ODB /Logger/History subtree |keys in /Logger/History subtree]]
* [[/History ODB tree|/History tree]]
* [[mlogger |MIDAS logger utility (mlogger)]]
</div>
 
=== Creating the /logger tree ===
The <span style="color:purple; font-style:italic">/Logger</span>  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 <span style="color:purple; font-style:italic;">/Logger</span>  ODB tree are used to '''customize logging''' of the data. There are also keys to customize the [[Message System |Messaging]] system.  
The <span style="color:purple; font-style:italic;">/Logger</span>  tree also may contain optional keys
[[Keys in the ODB /Logger tree #/Logger/Elog dir|/Logger/Elog dir ]] and [[Keys in the ODB /Logger tree #/Logger/History dir |/Logger/History dir]]
relevent to storing the [[History System | History]] and [[Elog]] data files.
 
The optional subtrees [[Keys in the ODB /Logger/Runlog/SQL subtree|/Logger/Runlog/SQL]] is used when [[logging to a mySQL database]] and [[Keys in the ODB /Logger/Runlog/ASCII subtree|/Logger/Runlog/ASCII]]for writing to an ASCII file.
 
=== Example  ===
The following example shows a typical <span style="color:purple; font-style:italic">/Logger</span>  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
* [[Keys in the ODB /Logger tree|keys in the /Logger tree]]
* [[Keys in the ODB /Logger/Channels subtree |keys in /Logger/Channels subtree]]
* [[Keys in the ODB /Logger/Runlog subtree |keys in /Logger/Runlog subtree]]
* [[Keys in the ODB /Logger/History subtree |keys in /Logger/History subtree]]
 
[[Category:ODB Tree]] [[Category:Data Logging]]

Latest revision as of 22:00, 30 October 2026

The midas documentation has moved. See /Logger on the ODB keys page and Data logging: overview for the new documentation about the /Logger ODB keys.

Retrieved from "https://daq00.triumf.ca/MidasWiki/index.php?title=/Logger_ODB_tree&oldid=3656"