Back Midas Rome Roody Rootana
  Midas DAQ System, Page 3 of 122  Not logged in ELOG logo
ID Date Authordown Topic Subject
  1114   22 Sep 2015 Zaher SalmanForumStarting program from custom page
Just in case anyone needs this in the future I am adding a comment about this issue. After a few months of working
with this solution we noticed that when using

request.open('GET', url, false);

on firefox it could cause the javascript to stop at that point, possibly due to a delayed response from the
server. A simple solution is to send an asynchronous requests

request.open('GET', url, true);

Zaher

> Thank you very much, this is exactly what I need and it works.
> 
> Zaher
> 
> > All functions in midas are controlled through special URLs. So the URL
> > 
> > http://<host:port>/?cmd=Start&value=10
> > 
> > will start run #10. Similarly with ?cmd=Stop. Now all you need is to set up a custom button, and use the 
> > OnClick="" JavaScript method to fire off an Ajax request with the above URL. 
> > 
> > To send an Ajax request, you can use the function XMLHttpRequestGeneric which ships as part of midas in the 
> > mhttpd.js file. Then the code would be
> > 
> > <input type="button" onclick="start()">
> > 
> > and in your JavaScript code:
> > 
> > ...
> > function start()
> > {
> >    var request = XMLHttpRequestGeneric();
> > 
> >    url = '?cmd=Start&value=10';
> >    request.open('GET', url, false);
> >    request.send(null);
> > }
> > ...
> > 
> > 
> > Cheers,
> > Stefan
  1369   17 May 2018 Zaher SalmanForumembedding history in SVG
I am embedding histories into a custom page within an SVG,

<image x="21000" y="1000" width="6000" height="6000"
href="../HS/SampleCryo/SampleTemp.gif?width=230&scale=0.5h"/>

this works fine. However, I would like to update this regularly without
refreshing the full page via

<meta http-equiv="Refresh" content="60">

is there a good way to do that? By the way, the "Periodic update of parts of a
custom page" from the documentation does not seem to work here.
  1993   08 Sep 2020 Zaher SalmanForumjson parser error
I am getting the following error alert in a custom page whenever a run starts

json parser exception: SyntaxError: Unexpected token < in JSON at position 985, batch request: method: "db_get_values", params: [object Object], id: 1598691925697 method: "get_alarms", params: null, id: 1598691925697 method: "cm_msg_retrieve", params: [object Object], id: 1598691925697 method: "cm_msg_retrieve", params: [object Object], id: 1598691925697

Does anyone know why and what causes this? This does not affect anything and things seem to continue running fine.

thanks.
  2096   24 Feb 2021 Zaher SalmanBug Reporthistory reload
I have a history that is embedded in a custom page using

<div class="mjshistory" data-group="SampleCryo" data-panel="SampleTemp" data-scale="30m" style="'+size+' position: relative;left: 640px;top: -205px;"></div>

this works fine when I load the page but seems to cause a timeout when reloading (F5) the page. It used to work fine last year but since a midas update this year it does not work. 

When I manually stop the script when firefox reports that it is slowing down the browse I get the following in the console:

Script terminated by timeout at:
binarySearch@http://xxx.psi.ch:8081/mhistory.js:1051:11
MhistoryGraph.prototype.findMinMax@http://xxx.psi.ch:8081/mhistory.js:1583:28
MhistoryGraph.prototype.loadInitialData/<@http://xxx.psi.ch:8081/mhistory.js:780:15

any ideas what may be causing this?

thanks.

Another hint to the problem, the custom page is accessible via 
http://xxx.psi.ch:8081/?cmd=custom&page=SampleCryo&
once loaded the address changes to where A and B change values as time passes (I guess B-A=30m).
http://xxx.psi.ch:8081/?cmd=custom&page=SampleCryo&&A=1614173369&B=1614175169
  2128   10 Mar 2021 Zaher SalmanSuggestionembed modbvalue in SVG
Is it possible to embed modbvalue in an SVG for use within a custom page?

thanks.
  2156   26 Apr 2021 Zaher SalmanSuggestionembed modbvalue in SVG
I found a way to embed modbvalue into a SVG:

<text x="100" y="100" font-size="30rem">
Run=<tspan class="modbvalue" data-odb-path="/Runinfo/Run number"></tspan>
</text>

This seems to behave better that the suggestion below.

> You can't really embed it, but you can overlay it. You tag the SVG with a 
> "relative" position and then move the modbvalue with an "absolute" position over 
> it:
> 
> <svg style="position:relative" width="400" height="100">
>   <rect width="300" height="100" style="fill:rgb(255,0,0);stroke-width:3;stroke:rgb(0,0,0)" />
>   <div class="modbvalue" style="position:absolute;top:50px;left:50px" data-odb-path="/Runinfo/Run number"></div>
> </svg>
  2158   05 May 2021 Zaher SalmanForumm is not defined error
We had the same issue here, which comes from mhttpd.js line 2395 on the current git version. This seems to happen mostly when there is an alarm triggered or when there is an error message.

Anyway, the easiest solution for us was to define m at the beginning of mhttpd_message function 

let m;

and replace line 2395 with

if (m !== undefined) {


> > I see this mhttpd error starting MSL-script: 
> > Uncaught (in promise) ReferenceError: m is not defined
> > at mhttpd_message (VM2848 mhttpd.js:2304)
> > at VM2848 mhttpd.js:2122
> 
> your line numbers do not line up with my copy of mhttpd.js. what version of midas 
> do you run?
> 
> please give me the output of odbedit "ver" command (GIT revision, looks like this: 
> IT revision:       Wed Feb 3 11:47:02 2021 -0800 - midas-2020-08-a-84-g78d18b1c on 
> branch feature/midas-2020-12).
> 
> same info is in the midas "help" page (GIT revision).
> 
> to decipher the git revision string:
> 
> midas-2020-08-a-84-g78d18b1c means:
> is commit 78d18b1c
> which is 84 commits after git tag midas-2020-08-a
> 
> "on branch feature/midas-2020-12" confirms that I have the midas-2020-12 pre-
> release version without having to do all the decoding above.
> 
> if you also have "-dirty" it means you changed something in the source code 
>  and warranty is voided. (just joking! we can debug even modified midas source 
> code)
> 
> K.O.
  2161   07 May 2021 Zaher SalmanBug Reportmodbselect trigget hotlink
It seems that a modbselect triggers a "change" in an ODB which has a hot link. This happens onload (or whenever the custom page is reloaded) and otherwise it behaves as expected, i.e. no change unless the modbselect is actually changed. Is this the intended behaviour? can this be modified?
  2309   16 Dec 2021 Zaher SalmanForumDevice driver for modbus
Dear all, does anyone have an example of for a device driver using modbus or modbus tcp to communicate with a device and willing to share it? Thanks.
  2424   15 Aug 2022 Zaher SalmanBug Reportfirefox hangs due to mhistory
Firefox is hanging/becoming unresponsive due to javascript code. After stopping the script manually to get firefox back in control I have the following message in the console

17:21:28.821 Script terminated by timeout at:
MhistoryGraph.prototype.drawTAxis@http://lem03.psi.ch:8081/mhistory.js:2828:7
MhistoryGraph.prototype.draw@http://lem03.psi.ch:8081/mhistory.js:1792:9
mhistory.js:2828:7

Any ideas how to resolve this??
  2426   16 Aug 2022 Zaher SalmanBug Reportfirefox hangs due to mhistory
> > Firefox is hanging/becoming unresponsive due to javascript code. After stopping the script manually to get firefox back in control I have the following message in the console
> > 
> > 17:21:28.821 Script terminated by timeout at:
> > MhistoryGraph.prototype.drawTAxis@http://lem03.psi.ch:8081/mhistory.js:2828:7
> > MhistoryGraph.prototype.draw@http://lem03.psi.ch:8081/mhistory.js:1792:9
> > mhistory.js:2828:7
> > 
> > Any ideas how to resolve this??
> 
> I have to reproduce the problem. Can you send me the full URL from your browser when you see that problem? Probably you have some "special" axis limits, so we don't see that 
> problem anywhere else.
> 
> Stefan

Hi Stefan and Konstantin,

The URL (reachable only within PSI) is http://lem03.psi.ch:8081/?cmd=custom&page=Mudas
Firefox is version 91.12.0esr (64-bit), but I had similar issues with chrome/chromium too.
The hangs seem to happen randomly so I have not been able to reproduce it yet. 
I have histories here  http://lem03.psi.ch:8081/?cmd=custom&page=Mudas&tab=3 (30 minutes each), but I have also histories popping up in modals though they do not cause any issues. 
I'll try to reproduce it in the coming few days and report again.

thanks,
Zaher
  2427   16 Aug 2022 Zaher SalmanBug Reportfirefox hangs due to mhistory
I found the bug. The problem is triggered by changing the firefox window. This calls a function that is supposed to change the size of the history plot and it works well when the history plots are visible but not if the history plots are hidden in a javascript tab (not another firefox tab).

Is there a clean way to resize the history plot if the parent div changes size?? The offending code is
mhist[i].mhg = new MhistoryGraph(mhist[i]);
mhist[i].mhg.initializePanel(i);
mhist[i].mhg.resize();
mhist[i].resize = function () {
   mhis.mhg.resize();
};
  2430   17 Aug 2022 Zaher SalmanBug Reportfirefox hangs due to mhistory
> The problem lies in your function mhistory_init_one() in Mudas.js:1965. You can only call "new MhistoryGraph(e)" with an element "e" which is something like
> 
> <div class="mjshistory" data-group="..." data-panel="..." data-base-u-r-l="https://host.psi.ch/?cmd=history" title="">
> 
> Please note the "data-base-u-r-l". This gets automatically added by the function mhistory_init() in mhistory.js:48. The URL is necessary sot that the upper right button in a history graph works which goes to a history page only showing the current graph.
> 
> In you function mhistory_init_one() you forgot the call
> 
>    mhist.dataset.baseURL = baseURL; 
> 
> where baseURL has to come from the current address bar like
> 
>    let baseURL = window.location.href;
>    if (baseURL.indexOf("?cmd") > 0)
>       baseURL = baseURL.substr(0, baseURL.indexOf("?cmd"));
>    baseURL += "?cmd=history";
> 
> If you duplicate some functionality from mhistory.js, please make sure to duplicate it completely.
> 

Thanks Stefan, but this was not the problem since I am setting the baseURL. You may have looked at the code during my debugging.

Some of my histories are placed in an IFrame object. I eventually realized that my code fails when it tries to resize a history which is placed in an invisible IFrame. I resolved the issue by making sure that I am resizing plots only if they are in a visible IFrame.
  
  2437   10 Oct 2022 Zaher SalmanSuggestionJSON-RPC function to read files
Hello ,

The midas sequencer uses the function js_seq_list_files to get a list of files in the /Sequencer/State/Path with extension *.msl. It would be nice to generalize this function to be able to read files with other (or any) extension.

Based on the js_seq_list_files I added a function in js_any_list_files mjsonrpc_user.cxx (attached) which does the job. Maybe a better/safer implementation can be made in midas. Are there any plans to do this?

thanks.
Attachment 1: mjsonrpc_user.cxx
/********************************************************************\

  Name:         mjsonrpc_user.cxx
  Created by:   Konstantin Olchanski

  Contents:     handler of user-provided and experimental JSON-RPC requests

\********************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <map>

#include "mjson.h"
#include "midas.h"
#include "msystem.h"

#include "mjsonrpc.h"

#include <mutex> // std::mutex

//
// example 1: extract request parameters, return up to 3 results
//

static MJsonNode* user_example1(const MJsonNode* params)
{
   if (!params) {
      MJSO* doc = MJSO::I();
      doc->D("example of user defined RPC method that returns up to 3 results");
      doc->P("arg", MJSON_STRING, "example string argment");
      doc->P("optional_arg?", MJSON_INT, "optional example integer argument");
      doc->R("string", MJSON_STRING, "returns the value of \"arg\" parameter");
      doc->R("integer", MJSON_INT, "returns the value of \"optional_arg\" parameter");
      return doc;
   }

   MJsonNode* error = NULL;

   std::string arg  = mjsonrpc_get_param(params, "arg", &error)->GetString(); if (error) return error;
   int optional_arg = mjsonrpc_get_param(params, "optional_arg", NULL)->GetInt();

   if (mjsonrpc_debug)
      printf("user_example1(%s,%d)\n", arg.c_str(), optional_arg);

   return mjsonrpc_make_result("string", MJsonNode::MakeString(arg.c_str()), "integer", MJsonNode::MakeInt(optional_arg));
}

//
// example 2: extract request parameters, return more than 3 results
//

static MJsonNode* user_example2(const MJsonNode* params)
{
   if (!params) {
      MJSO* doc = MJSO::I();
      doc->D("example of user defined RPC method that returns more than 3 results");
      doc->P("arg", MJSON_STRING, "example string argment");
      doc->P("optional_arg?", MJSON_INT, "optional example integer argument");
      doc->R("string1", MJSON_STRING, "returns the value of \"arg\" parameter");
      doc->R("string2", MJSON_STRING, "returns \"hello\"");
      doc->R("string3", MJSON_STRING, "returns \"world!\"");
      doc->R("value1", MJSON_INT, "returns the value of \"optional_arg\" parameter");
      doc->R("value2", MJSON_NUMBER, "returns 3.14");
      return doc;
   }

   MJsonNode* error = NULL;

   std::string arg  = mjsonrpc_get_param(params, "arg", &error)->GetString(); if (error) return error;
   int optional_arg = mjsonrpc_get_param(params, "optional_arg", NULL)->GetInt();

   if (mjsonrpc_debug)
      printf("user_example2(%s,%d)\n", arg.c_str(), optional_arg);

   MJsonNode* result = MJsonNode::MakeObject();

   result->AddToObject("string1", MJsonNode::MakeString(arg.c_str()));
   result->AddToObject("string2", MJsonNode::MakeString("hello"));
   result->AddToObject("string3", MJsonNode::MakeString("world!"));
   result->AddToObject("value1", MJsonNode::MakeInt(optional_arg));
   result->AddToObject("value2", MJsonNode::MakeNumber(3.14));

   return mjsonrpc_make_result(result);
}

//
// example 3: return an error
//

static MJsonNode* user_example3(const MJsonNode* params)
{
   if (!params) {
      MJSO* doc = MJSO::I();
      doc->D("example of user defined RPC method that returns an error");
      doc->P("arg", MJSON_INT, "integer value, if zero, throws a JSON-RPC error");
      doc->R("status", MJSON_INT, "returns the value of \"arg\" parameter");
      return doc;
   }

   MJsonNode* error = NULL;

   int arg  = mjsonrpc_get_param(params, "arg", &error)->GetInt(); if (error) return error;

   if (mjsonrpc_debug)
      printf("user_example3(%d)\n", arg);

   if (arg)
      return mjsonrpc_make_result("status", MJsonNode::MakeInt(arg));
   else
      return mjsonrpc_make_error(15, "example error message", "example error data");
}

static MJsonNode* js_any_list_files(const MJsonNode* params)
{
   if (!params) {
      MJSO* doc = MJSO::I();
      doc->D("js_any_list_files");
      doc->P("subdir", MJSON_STRING, "List files in /Seq/State/Path/subdir");
      doc->R("status", MJSON_INT, "return status of midas library calls");
      doc->R("path", MJSON_STRING, "Search path");
      doc->R("fileext", MJSON_STRING, "Filename extension");
      doc->R("subdirs[]", MJSON_STRING, "list of subdirectories");
      doc->R("files[].filename", MJSON_STRING, "script filename");
      doc->R("files[].description", MJSON_STRING, "script description");
      return doc;
   }

   MJsonNode* error = NULL;

   std::string subdir = mjsonrpc_get_param(params, "subdir", &error)->GetString(); if (error) return error;
   std::string fileext  = mjsonrpc_get_param(params, "fileext", &error)->GetString(); if (error) return error;
   std::string path  = mjsonrpc_get_param(params, "path", NULL)->GetString(); 

   if (subdir.find("..") != std::string::npos) {
      return mjsonrpc_make_result("status", MJsonNode::MakeInt(DB_INVALID_PARAM));
   }

   int status;
   HNDLE hDB;

   status = cm_get_experiment_database(&hDB, NULL);

   if (status != DB_SUCCESS) {
      return mjsonrpc_make_result("status", MJsonNode::MakeInt(status));
   }

   //   std::string path;
   // If path is not provided get from ODB
   if (path == "") {
      status = db_get_value_string(hDB, 0, "/Sequencer/State/Path", 0, &path, FALSE);
   }
   
   if (status != DB_SUCCESS) {
      return mjsonrpc_make_result("status", MJsonNode::MakeInt(status));
   }

   path = cm_expand_env(path.c_str());

   if (subdir.length() > 0) {
      if (path[path.length()-1] != DIR_SEPARATOR) {
         path += DIR_SEPARATOR_STR;
      }
      path += subdir;
   }

   char* flist = NULL;

   //printf("path: [%s]\n", path.c_str());

   MJsonNode* s = MJsonNode::MakeArray();
   
   /*---- go over subdirectories ----*/
   int n = ss_dir_find(path.c_str(), "*", &flist);

   for (int i=0 ; i<n ; i++) {
      if (flist[i*MAX_STRING_LENGTH] != '.') {
         //printf("subdir %d: [%s]\n", i, flist+i*MAX_STRING_LENGTH);
         ss_repair_utf8(flist+i*MAX_STRING_LENGTH);
         s->AddToArray(MJsonNode::MakeString(flist+i*MAX_STRING_LENGTH));
      }
   }
   
   MJsonNode* f = MJsonNode::MakeArray();

   /*---- go over files in path ----*/
   n = ss_file_find(path.c_str(), fileext.c_str(), &flist);
   for (int i=0 ; i<n ; i++) {
      //printf("file %d: [%s]\n", i, flist+i*MAX_STRING_LENGTH);
      MJsonNode* o = MJsonNode::MakeObject();
      ss_repair_utf8(flist+i*MAX_STRING_LENGTH);
      o->AddToObject("filename", MJsonNode::MakeString(flist+i*MAX_STRING_LENGTH));
      o->AddToObject("description", MJsonNode::MakeString("description"));
      f->AddToArray(o);
#if 0
      char comment[512];
      comment[0] = 0;
      strlcpy(str, path, sizeof(str));
      if (strlen(str)>1 && str[strlen(str)-1] != DIR_SEPARATOR)
         strlcat(str, DIR_SEPARATOR_STR, sizeof(str));
      strlcat(str, flist+i*MAX_STRING_LENGTH, sizeof(str));
      
      if (msl_parse(str, error, sizeof(error), &error_line)) {
         if (strchr(str, '.')) {
            *strchr(str, '.') = 0;
            strlcat(str, ".xml", sizeof(str));
         }
         comment[0] = 0;
         if (pnseq) {
            mxml_free_tree(pnseq);
            pnseq = NULL;
         }
         pnseq = mxml_parse_file(str, error, sizeof(error), &error_line);
         if (error[0]) {
            strlcpy(comment, error, sizeof(comment));
         } else {
            if (pnseq) {
               pn = mxml_find_node(pnseq, "RunSequence/Comment");
               if (pn)
                  strlcpy(comment, mxml_get_value(pn), sizeof(comment));
               else
                  strcpy(comment, "<No description in XML file>");
            }
         }
         if (pnseq) {
            mxml_free_tree(pnseq);
            pnseq = NULL;
         }
      } else {
         sprintf(comment, "Error in MSL: %s", error);
      }
      
      strsubst(comment, sizeof(comment), "\"", "\\\'");
      r->rsprintf("<option onClick=\"document.getElementById('cmnt').innerHTML='%s'\"", comment);
      r->rsprintf(" onDblClick=\"load();\">%s</option>\n", flist+i*MAX_STRING_LENGTH);
#endif
   }

   free(flist);
   flist = NULL;

   MJsonNode* r = MJsonNode::MakeObject();
   r->AddToObject("status", MJsonNode::MakeInt(SUCCESS));
   ss_repair_utf8(path);
   r->AddToObject("path", MJsonNode::MakeString(path.c_str()));
   r->AddToObject("subdirs", s);
   r->AddToObject("files", f);
   
   return mjsonrpc_make_result(r);

}

//
// to create your own rpc method handler, copy one of the examples here, register it in user_init below
//


//
// user_init function is called at startup time to register user rpc method handlers
//

void mjsonrpc_user_init()
{
   if (mjsonrpc_debug) {
      printf("mjsonrpc_user_init!\n");
   }

   // add user functions to the rpc list

   mjsonrpc_add_handler("user_example1", user_example1);
   mjsonrpc_add_handler("user_example2", user_example2);
   mjsonrpc_add_handler("user_example3", user_example3);
   mjsonrpc_add_handler("any_list_files", js_any_list_files, true);
}



/* emacs
 * Local Variables:
 * tab-width: 8
 * c-basic-offset: 3
 * indent-tabs-mode: nil
 * End:
 */

  2446   05 Nov 2022 Zaher SalmanSuggestionhistories capture 'ruy'
The histories capture key events from 'r' 'u' 'y' and 'Escape' for various functions like rescaling etc. However, this also means that if we include an editable modbvalue and a history in the same custom page then changing the modbvalue to something that includes 'ruy' is not possible.

In mhistory.js we have

// Keyboard event handler (has to be on the window!)
window.addEventListener("keydown", this.keyDown.bind(this));

I am not sure why it "has to be on the window". For now, I am bypassing this issue by changing the event listener to "keyup" but maybe there is a more elegant solution for this. Adding the event listener to the div element that includes the history does not seem to work.
  1888   26 Apr 2020 Yu Chen (SYSU)ForumQuestions and discussions on the Frontend ODB tree structure.
Dear MIDAS developers and colleagues,

    This is Yu CHEN of School of Physics, Sun Yat-sen University, China, working in the PandaX-III collaboration, an experiment under development to search the neutrinoless double 
beta decay. We are working on the DAQ and slow control systems and would like to use Midas framework to communicate with the custom hardware systems, generally via Ethernet 
interfaces. So currently we are focusing on the development of the FRONTEND program of Midas and have some questions and discussions on its ODB structure. Since I’m still not 
experienced in the framework, it would be precious that you can provide some suggestions on the topic.
    The current structure of the frontend ODB tree we have designed, together with our understanding on them, is as follows:
      /Equipment/<frontend_name>/
        ->  /Common/: Basic controls and left unchanged.
        ->  /Variables/: (ODB records with MODE_READ) Monitored values that are AUTOMATICALLY updated from the bank data within each packed event. It is done by the update_odb() 
function in mfe.cxx.
        ->  /Statistics/: (ODB records with MODE_WRITE) Default status values that are AUTOMATICALLY updated by the calling of db_send_changed_records() within the mfe.cxx.
        ->  /Settings/: All the user defined data can be located here. 
            -> /stat/: (ODB records with MODE_WRITE) All the monitored values as well as program internal status. The update operation is done simultaneously when 
db_send_changed_records() is called within the mfe.cxx.
            -> /set/: (ODB records with MODE_READ) All the “Control” data used to configure the custom program and custom hardware.

    For our application, some of the our detector equipment outputs small amount of status and monitored data together with the event data, so we currently choose not to use EQ_SLOW 
and 3-layer drivers for the readout. Our solution is to create two ODB sub-trees in the /Settings/ similar to what the device_driver does. However, this could introduce two 
troubles:
    1) For /Settings/stat/: To prevent the potential destroy on the hot-links of /Variables/ and /Statistics/ sub-trees, all our status and monitored data are stored separately in 
the /Settings/stat/ sub-tree. Another consideration is that some monitored data are not directly from the raw data, so packaging them into the Bank for later showing in /Variables/ 
could somehow lead to a complicated readout() function. However, this solution may be complicated for history loggings. I have find that the ANALYZER modules could provide some 
processes for writing to the /Variables/ sub-tree, so I would like to know whether an analyzer should be used in this case.
    2) For /Settings/set/: The “control” data (similar to the “demand” data in the EQ_SLOW equipment) are currently put in several /Settings/set/ sub-trees where each key in 
them is hot-linked to a pre-defined hardware configuration function. However, some control operations are not related to a certain ODB key or related to several ODB keys (e.g. 
configuration the Ethernet sockets), so the dispatcher function should be assigned to the whole sub-tree, which I think can slow the response speed of the software. What we are 
currently using is to setup a dedicated “control key”, and then the input of different value means different operations (e.g. 1 means socket opening, 2 means sending the UDP 
packets to the target hardware, et al.). This “control key” is also used to develop the buttons to be shown on the Status/Custom webpage. However, we would like to have your 
suggestions or better solutions on that, considering the stability and fast response of the control.

    We are not sure whether the above understanding and troubles on the Midas framework are correct or they are just due to our limits on the knowledge of the framework, so we 
really appreciate your knowledge and help for a better using on Midas. Thank you so much!
  1981   12 Aug 2020 Yan LiuSuggestionadding db_get_mode ti check access mode for keys
Hello,

I am wondering if there is a function that checks the access mode for a key? I 
found the db_set_mode() function that allows me to set the access mode for a key, 
but failed to find its counterpart get function.

Thanks in advance,
Yan
  1983   13 Aug 2020 Yan LiuSuggestionadding db_get_mode ti check access mode for keys
Thank you!

Yan

> > Hello,
> > 
> > I am wondering if there is a function that checks the access mode for a key? I 
> > found the db_set_mode() function that allows me to set the access mode for a key, 
> > but failed to find its counterpart get function.
> > 
> > Thanks in advance,
> > Yan
> 
> 
>   KEY k;
>   db_get_key(hDB, handle, &k);
>   std::cout << k.access_mode << std::endl;
> 
> /Stefan
  968   23 Feb 2014 William PageForumdb_check_record() for verifying structure of ODB subtree
Hi,

I have been trying to use db_check_record() in order to verify that a subtree in the ODB has the correct 
variables, variable order, and overall size. I'm going off the documentation 
(https://midas.psi.ch/htmldoc/group__odbfunctionc.html) and use a string to compare against the ODB 
structure.  Since the string format is not specified for db_check_record(), I'm formatting my string 
according to the db_create_record() example.

Instead of db_check_record() checking the entire ODB subtree against all the variables represented in the 
string, I'm finding that only the first variable is checked.  The later variables in the string can be 
misspelled, out of order, or inexistent, and db_check_record() will still return 1.

Am I using db_check_record incorrectly?  

Thank you for any help with this issue.


I also believe that some of the documentation for db_check_record is outdated.  For example, init_string 
is referenced in the documentation but isn't part of the function definition.
  1170   18 Mar 2016 William PageBug Reportincomplete copy using odbedit copy
Hi,

Attempting to copy a subtree to a new location in the ODB using odbedit with "copy <src> <dest>" is 
occasionally not copying the entire <src> subtree.

I am experiencing this issue consistently when trying to copy subtrees from the "/Equipment" ODB tree to 
a new location.  The first 2-3 variables/directories of the <src> subtree will be copied to <dest> but the 
full subtree will not be copied over.
ELOG V3.1.4-2e1708b5