Search results

The purpose of the [[mhttpd]] Start page is to ...Edit-on-start Parameters]]'' for the user to optionally edit, prior to the run starting.

== Note on Programs auto start, auto stop, auto restart == ...n has been added to the documentation on page [[/Programs ODB tree]] (Auto start,Auto stop, Auto restart).

* [[Edit-on-start Parameters]] ...is started (similar to the [[Edit-on-start Parameters]] that appear when a run is started). Edit-on-sequence parameters may be defined in the

...or: purple;">''/Logger/Runlog/ASCII''</span> ODB subtree is a subdirectory of the [[/Logger ODB tree]]. The ODB <span style="color: purple;">''/Logger/Ru ...DB that are to be saved in the ASCII file at Begin-of-run and or at End-of-run.

* [[Run States and Transitions]] ..."Start" and "Stop" are issued from the [[ODB|ODBedit command]]. Refer to [[Run States and Transitions]] for more details.

about the state of the current run. Several time fields are available for run time statistics. Run number INT 1 4 2h 0 RWD 8521

predefined links exist which will be used at begin-of-run (BOR) and end-of-run (EOR) respectively for storing parameter values into an ASCII file. These e ...tree |ODB /Logger/Runlog/ASCII subtree]] for an explanation of the meaning of each key.

=== Creation of run log file === ..., number of events, hardware settings etc. One possibility is to write the run log to a MySQL database through the ODB settings as described under [[Loggi

* mhttpd [[Start Page]] When a run is started, by default only the

* key <span style="color:purple; font-style:italic">Execute on start run</span> * key <span style="color:purple; font-style:italic">Execute on stop run</span>

Three Run States define the states of the MIDAS DAQ system: [[File:Transition.gif|center|frame|Representation of run states and associated transitions]]

...olor: purple;">''/Logger/Runlog/SQL''</span> ODB subtree is a subdirectory of the [[/Logger ODB tree]]. The ODB <span style="color: purple;">''/Logger/Ru The following sections explain the purpose of the keys in this subtree.

...ual data files. This feature might be helpful if a data file from a single run gets too large (>4 GB for example) and if shorter runs are not wanted for e ** or after a certain '''number of bytes''' :

...tyle:italic;">/Logger</span> ODB tree are used to '''customize logging''' of the data. There are also keys to customize the [[Message System |Messaging] ODB Dump File run%05d.json

...log.log''' file handled by the [[MIDAS Analyzer]]. The two main advantages of using the SQL are: * The recording is done by the logger and therefore is independent of the user analyzer.

...log.log''' file handled by the [[MIDAS Analyzer]]. The two main advantages of using the SQL are: * The recording is done by the logger and therefore is independent of the user analyzer.

This key in the [[#top|/System ODB tree]] controls the format of the prompt of the [[odbedit]] utility. The default prompt is The meanings of the prompt symbols are

...Sequencer Page, [[Sequencer|Sequencer scripts]] can be loaded, edited and run. : As of summer 2018, the sequencer runs as a separate process and must be started b

...ont-style:italic">Command</span> directory allows for programmatic control of the Sequencer. ...</span> ODB tree is created the first time that the msequencer program is run. It will be filled with default values.

The purpose of the [[mhttpd]] status page is to allow the user to control and monitor the ...ent can be accessed from the web (see [[mhttpd#Usage|usage]]). An example of the status page is shown in [[#Figure 1|Figure 1]]. By default, anyone can

...ut has limited editing capability and does not support all of the features of {{Utility|name=odbedit}}. The features of {{Utility|name=odbedit}} include

Running odbedit and issuing the command "help" displays the list of commands: chmod <mode> <key> - change access mode of a key

* '''Default:''' <Path of experiment given in [[exptab]] > ...tyle="color: purple;">''Data dir''</span> will be pointing to the location of

...splay. It presents the most useful information about the current condition of the MIDAS Acquisition system in a compact form. The display is composed at the most of 5 sections depending on the current status

...k is the possiblity to access it remotely, and provide a general knowledge of the experiment. = Installation of External Elog =

{{Utility|name=mserver}} is needed when one or more of an experiment's MIDAS clients are running on a different host. In this case <li> the user must take action to allow programs on remote machines to run on the host machine by following these instructions: [[Security#MIDAS progr

Therefore, documentation for old and/or obsolete versions of the MIDAS code and utilities will be moved to this area. ...The only way to secure this version was to run behind a firewall. As part of the May 2015 upgrade to MIDAS [[Security]], a secure alternative to running

Start-Stop Buttons BOOL 1 4 8h 0 RWD y <span style="color: purple;">edit on start</span> DIR

Many experiments want to monitor the CPU usage and network throughput of their computers. {{Utility|name=msysmon}} provides a pre-built [[Frontend_A ...eated without conflict. The code is based on htop, and parses the contents of /proc/stat, /proc/meminfo and /proc/net/dev. It automatically builds histor

...nctions are invoked using the "cmd" parameter with value equal to the name of the AJAX request, for example, to call "jmsg", do: ...s is consistent with mhttpd.js which does not urlEncode the values. Values of "format0", etc used by ODBMGet() are decoded as expected.

...unicate with an experiment using any web browser. It is used primarily for run control. For '''maximum web security''', {{Utility|name=mhttpd}} should be run behind a password-protected '''Apache/nginx HTTPS proxy''' (see [[Security]

...nnel (e.g. Tape, Disk) when started. Multiple instances of the program can run concurrently, connecting to a different channel (see [[lazylogger]]). ...created after the first successful operation of the channel. The contents of these sub-trees is discussed below (see

...nfused with MIDAS (Multi Instance Data Acquisition System) from UK, or any of the MIDAS (Mobile Instrumentation Data Acquisition System), or MIDAS digita ...ready in use in many laboratories, the development continues with addition of new features and tools. Recent developments involve multi-threading, FGPA/L

A Sequencer for starting and stopping runs is part of the MIDAS distribution. It uses a simple Midas Script Language (MSL) for co ...aram/Value''' before the sequencer is started. To start the script, set '''Start script''' to '''yes'''. This can be done in a combined way on a custom page

...tion of [[Online Database#The ODB Structure|the ODB Structure]] and a list of all the ODB trees used by the system can be found in [[Online Database]]. ...such as: byte, words, double words, float, strings, etc. or arrays of any of those.

The [[ROOTANA]] analyzer framework is set of classes that provides the following functionality * A class TRootanaEventLoop that handles most of the functionality associated with an event loop. The user creates a derived

The purpose of <span style="color:darkcyan;">''mlogger''</span> is to save data from the e a full list of what <span style="color:darkcyan;">''mlogger''</span> can do.

...ystem to perform various functions e.g. data logging, web server etc. They run as MIDAS [[#Clients]]. ...h the MIDAS libraries and runs under the MIDAS system to allow the user to run a MIDAS [[#Experiment]]. MIDAS clients can be ''Local'' or ''Remote''.

requires the definition of an equipment structure which describes its mode of operation. The set of parameters for this equipment is limited to:

run_number = odb["Runinfo"]["Run number"] * It does not require the rest of midas to be compiled.

...=$HOME/online}} and the MIDAS ''experiment name'' will be "e777". The name of the ''experiment host'' will be "mhostpc". ...access to any hardware required, and all frontends, logger, analyzer etc. run on the one computer.

...a remote data storage. While there are many ways to do this independently of the acquisition system, the lazylogger provides a simple way to manage this ...> can be running simultaneously on the same computer, each one taking care of a particular channel.

Recent versions of elogd (ELOG) do support SSL https:// connections, and ...er (Mongoose)]] for more information. This option provides a similar level of security to an HTTP proxy.

The ''Equipment List'' is a declaration of the equipment(s) in a frontend using the ''EQUIPMENT structure'' defined in ...these parameters determine the properties of each equipment. More examples of equipment declarations can be found in the ..midas/examples subdirectories

* '''MIDASSYS''' Base directory of the MIDAS package, midas and mxml should be at the same level. == Standard layout of MIDAS experiment ==

...larm system includes several other features such as sequencing and control of the experiment. The alarm capabilities are: * Selection of Alarm check frequency

...FC-7159] (read more at http://www.json.org/). When necessary, the overhead of text encoded JSON is reduced by compressing JSON documents (using gzip), or { "Runinfo" : { "State" : 1, "Online Mode" : 1, "Run number" : 13585 } }

: Since 2018, many of the features described here can now be implemented more simply using the m : '''If writing a new web page, it is strongly recommended you make use of the mod*JS features. '''

Internally, midas uses the RPC system to handle run transitions, ODB hotlinks and more. ...C_RC_TRANSITION</code> message to clients that want to handle the begin-of-run transition. Each client responds with whether it's okay for the transition

This section describes the features of the user-written part of a "C-style" [[Frontend Operation#Frontend|Frontend]], referred to here as ' ...lightly more user-friendly wrapper (mfed.cxx) that helps reduce the amount of boiler-plate needed for a new frontend.

{{Utility|name=mchart}} is a periodic data retriever of a specific path in the ODB, which can be used in conjunction with a stripch ...t a fixed time interval) a refreshed '''data file''' containing the values of the numerical data specified in the configuration file.

We are exploring ways of being able to view rootana histograms and plots on webpages, rather than in The rootana analyzer has a command line option to allow the initialization of a THttpServer. For instance, you can try doing

...don't need to produce data, you can write midas clients without using one of the frontend frameworks. ...rk you write your own <code>main()</code> function (generally just 2 lines of code).

...using the [[mhttpd]] MIDAS webserver utility, giving the user an easy way of seeing how experimental variables have changed with time. ...each variable in its own file, making it much easier to trace the history of a particular variable.

...exibility. For example, a custom page may present the essential parameters of the controlled experiment in a more compact way. A custom page may even rep Custom web pages provide the user with a means of creating secondary user-created web page(s) activated within the standard M

...ks that were severely affecting the T2K/ND280 experiment in Japan. Removal of these problems was an important improvement to MIDAS. To remember lessons l * https://midas.triumf.ca/elog/Midas/734 - start of thread

The midas git repository uses tags to denote specific releases. Tags are of the format <code>midas-YEAR-MONTH-SUFFIX</code>, e.g. <code>midas-2019-06-b ...code or the current ODB values take precendence for the "Common" settings of an equipment when starting a frontend. See [https://midas.triumf.ca/elog/M