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Import javascript library
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Hi,
Its been a while but i'm encountering a new issue that is very related to what we discussed here before. I developed the code and everything was working fine in the test box and i left it for few months. Didn't pay much attention until now.
I have an HTTP Retriever that calls a local url (my file is in /opt/mango/web). This url, reads bunch of XIDs and then does some calculations and then sets bunch of other XIDs.
My HTTP Retriever runs fine with no error (set on update every 2 minutes and I see it under Polls) but my values dont get updated. Its as if the code is not running. I dont see any errors in ma.log and so far i coudln't see any indication of an issue. Even when i enable/disable the data source, i still dont see the data being updated (in ma.log, i see the data source being disabled/enabled with no issue).
To test the url for the http retriever, i manually ran it in a browser and it actually updated the values but if i do "curl" from the mango command prompt, i dont see the values being updated.
Where can i see the actual result from HTTP Retriever, is there a log for it? Thanks. -
Hi arvand,
It doesn't look like there's more logging to be enabled. Be sure to keep an eye on your events, as I would expect an event to be raised in Mango if there was an error. It's possible an error is escaping to stderr, but I wouldn't think so. You can launch Mango manually with /opt/mango/bin/ma.sh start and then trigger a poll to see if there's an exception escaping.
More likely than not, if the checkmark on the data source fetches the data (unless your browser has some authenticating cookie), it's going to be a problem with a point of some kind. If you've made recent edits, I would try disabling those points, or all but one, and trying again.
I do not know what you mean, "but if I do curl from the mango command prompt." I don't refer to anything as the Mango command prompt. Do you mean you SSH'ed into the device?
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@phildunlap said in Import javascript library:
I do not know what you mean, "but if I do curl from the mango command prompt." I don't refer to anything as the Mango command prompt. Do you mean you SSH'ed into the device?
What imeant was that if i ssh to the box and run curl with the url, i still dont see the values being updated. The only case that it works is to run the url through a web browser.
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Running curl on the command line doesn't do anything to Mango.
So, the checkmark opens the page successfully, the checkmark on the edit point for the value regex gets the right value, curl gets the data but it doesn't update in Mango (and was never supposed to), but when polling on its own the data source gets no values? Any chance you have an authentication cookie in your browser?
You can email in your json for the Http retriever and a sample document to support@infiniteautomation.com or you can post it here and I'll look at it.
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@phildunlap ok thanks. im trying it on a newer box now (version 3). If it doesnt work on this one either, i will let you know. It was working fine on the old box until it stopped.
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when i look at the poll data for the http retriever data source i see the poll time is 0 second. is this right?
2017/09/28 18:46:40.849 0ms
2017/09/28 18:48:40.849 0ms
2017/09/28 18:50:40.849 0ms -
here is the json. The box has access to the url. i confirmed by issuing wget and curl from ssh.
"dataSources":[
{
"xid":"DS_608664",
"name":"CoolPropRet",
"enabled":true,
"type":"HTTP_RETRIEVER",
"alarmLevels":{
"DATA_RETRIEVAL_FAILURE":"URGENT",
"POLL_ABORTED":"URGENT",
"SET_POINT_FAILURE":"URGENT",
"PARSE_EXCEPTION":"URGENT"
},
"purgeType":"YEARS",
"updatePeriodType":"MINUTES",
"quantize":false,
"retries":3,
"setPointUrl":"",
"timeoutSeconds":40,
"updatePeriods":2,
"url":"http://IPADDRESS:85/coolprop4.html",
"editPermission":"",
"purgeOverride":false,
"purgePeriod":1
}
]
} -
and here is the html for coolprop4.html
<!DOCTYPE html> <html> <head> <title>Set Point Value</title> <!-- Add the Mango Favicon --> <link rel="icon" href="/images/favicon.ico"> <!-- Page Style --> <style></style> <link href="/resources/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <link href="/modules/dashboards/web/private/css/dashboard.css" rel="stylesheet"> <!-- Base Library --> <script type="text/javascript" src="/resources/loaderConfig.js"></script> <script type="text/javascript" src="/resources/require.js"></script> <script type="text/javascript" src="/resources/main.js"></script> <script type="text/javascript" src="coolprop.js"></script> <script type="text/javascript"> require(['jquery', 'mango/api'], function($, MangoAPI) { //defaiult numbers for pressure and temperature //The temperatures are in *F and pressures are in var Pressure = 40; var Temprature = 500; $('#document').ready(function(){ MangoAPI.defaultApi.getCurrentValue('DP_962596').then(function(currentValue){ var statusRow = []; statusRow.push('System Start time is' + currentValue.value+' minutes ago.'); statusRow.push(new Date()); $('#status').append(createRow(statusRow)); if(currentValue.value>0.1){ MangoAPI.defaultApi.getCurrentValue('DP_833148').then(function(currentValue){ Pressure=currentValue.value; MangoAPI.defaultApi.getCurrentValue('DP_529391').then(function(currentValue){ Temprature=currentValue.value; var xid = 'DP_274226'; //S_Nitrogen var Gas_Type='Nitrogen'; SetValues(xid,Pressure,Temprature,Gas_Type); xid = 'DP_540483'; //S_R134a Gas_Type='R134a'; SetValues(xid,Pressure,Temprature,Gas_Type); xid = 'DP_499589'; //S_R404A Gas_Type='R404A'; SetValues(xid,Pressure,Temprature,Gas_Type); xid = 'DP_052405'; //S_R410A Gas_Type='R410A'; SetValues(xid,Pressure,Temprature,Gas_Type); xid = 'DP_403680'; //S_R507A Gas_Type='R507A'; SetValues(xid,Pressure,Temprature,Gas_Type); }).fail(MangoAPI.logError); }).fail(MangoAPI.logError); } }).fail(MangoAPI.logError); }); function SetValues(xid,Pressure,Temprature,Gas_Type){ //We need the data type for the point MangoAPI.defaultApi.getPoint(xid).then(function(point){ //Check to see if settable if(point.pointLocator.settable === false){ var statusRow = []; statusRow.push(xid + ' not settable.'); statusRow.push(new Date()); //Append a status row $('#status').append(createRow(statusRow)); return; } var pvt = getPointValueTime(point,Pressure,Temprature,Gas_Type); MangoAPI.defaultApi.putValue(xid, pvt).then(function(response){ var statusRow = []; statusRow.push('Set Value For ' + xid +'('+Gas_Type+')'+' to ' + pvt.value); statusRow.push(new Date()); //Append a status row $('#status').append(createRow(statusRow)); }).fail(MangoAPI.logError); }).fail(MangoAPI.logError); } function createRow(columns){ var tr = $('<tr>'); for(var i=0; i<columns.length; i++){ var td = $('<td>'); td.text(columns*); tr.append(td); } return tr; } function getPointValueTime(dataPoint,Pressure,Temprature,Gas_Type){ var value = null; value= Module.PropsSI('S', 'P', Pressure, 'T', Temprature, Gas_Type); return { value: value, timestamp: new Date().getTime(), annotation: 'Set by custom dashboard', dataType: dataPoint.pointLocator.dataType, }; } }); </script> </head> <body> <div id="main"> <div class="row"> <div class="col-md-12"> <table class="table"> <tr><th>Status</th><th>Time</th></tr> <tbody id="status"></tbody> </table> </div> </div> </div> </body> </html> -
The detail that is missing is the regex you are trying to use to get values from this. You didn't put any data points in your export.
I must say, I'm confused. Why would you have a data source regex'ing a script for constant content? The JavaScript and HTML (or whatever content) are not interpreted beyond the data points you create to parse it.
A 0ms poll isn't that surprising, as it's loading a file locally. Here were my poll times reading the regex Set(.*) for group 1 (which gives me value,
Point Value</title>)from that content saved as you describe,2017/09/28 20:53:15.311 16ms
2017/09/28 20:53:20.311 8ms
2017/09/28 20:53:25.311 0ms
2017/09/28 20:53:30.311 0ms
2017/09/28 20:53:35.311 0ms
2017/09/28 20:53:40.311 0ms
2017/09/28 20:53:45.311 0ms
2017/09/28 20:53:50.311 8ms
2017/09/28 20:53:55.311 4ms
2017/09/28 20:54:00.311 0msBecause it's doing the same thing every time. It will definitely be 0ms if you don't have any data points.
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@phildunlap I agree. What im trying to do is a bit confusing but here is my attempt for a s simple explanation...
I have a javascript library named coolprop.js that is about 7mb in size and too big to use inside a mango script. So what i ended up to do was to create an html page that:
Step 1: retrieves bunch of data points value by XID then
Step 2: passes those data points value to a function provided by coolprop to do some calculation, then
Step 3: use mango api to assign values calculated in above step to some other Data points.I then use the url pointed to this html file into httpretriever to simply run this html file every 2 minutes. Once html is ran, it should set the values as detailed out in the above steps. I know the html works because if i run it through my browser, it perfectly does what it suppose to but when i run it through httpretreiver, nothing happens (as if the whole URL is not even being called every 2 minutes). This script used to work before but suddenly stopped working. and unfortunately i cant really debug it. When running in the browser, i can see the output and errors written in the chrome devtool but i have no visibility to errors when using http retriever.
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@phildunlap i hope that my explanation above made sense. Thanks.
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The HTTP Retriever doesn't execute or interpret the content it retrieves. You would end up in the same boat as before, where coolprop runs Java out of memory in your instance. That's what this is an effort to circumvent, right?
I think what you're looking for is to have a node js running on a machine with sufficient memory that executes these calculations and sets the values back to Mango through the API.
It is certainly possible, though, that you can leave this page open on the other computer in a browser (something which is executing it). You can create an automatic login for the user and just leave that page open somewhere. It's not the most robust solution, but it should work.
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@phildunlap I understand but are you 100% certain that this wont work? Im pretty sure it was updating the values before.
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Are you saying when you had the page open in a browser?
I am certain the HTTP retriever is basically treating it as text content for regex parsing, yes. It doesn't treat it as a webpage and execute its content.
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@phildunlap said in Import javascript library:
Are you saying when you had the page open in a browser?
I am certain the HTTP retriever is basically treating it as text content for regex parsing, yes. It doesn't treat it as a webpage and execute its content.
running the script through another browser is not an option. Any other ways you can think of? Thanks.
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@phildunlap how about running the url through something like phantomjs from command prompt?
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I don't have experience with phantomjs but it looks like it might work. It will at least execute the JavaScript. It should be the same idea as using node, right?
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@phildunlap said in Import javascript library:
I don't have experience with phantomjs but it looks like it might work. It will at least execute the JavaScript. It should be the same idea as using node, right?
Well,i just tried phantom and it wont work as it does not have arm distribution. I will tried node.js see what happens.
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@phildunlap now with Node.js i need to convert my html file that references java script inside to full javascript!
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@phildunlap do we have any sample javascripts that cna be used in node.js that use mangoapi? like retrieving values by XID and setting values? Thanks.
