Weatherbug XML API script and templates

[Mondo1287]

Cool, thanks. I swapped out your modified script in the main zip.

[Mondo1287]

All,

Reviewing Mondo1287's script, I noted an issue relative to the outputing of the script results. The method chosen will cause problems with Cactid. Therefore, I have revised the code attached.

TheWitness

In the foreach loop, the commas need replaced with periods for it to work.

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$out_string .= "humidity:" . $stat->humidity . " ";

[TheWitness]

Oops. I never noticed that

TheWitness

[rsaeks]

When I am trying to run this in the CLI to test why I am getting nan's in my graph, I get the following error:

Fatal error: Call to undefined function: simplexml_load_string() in /path/cacti/scripts/wbugxml.php on line 9

Any ideas?

[Mondo1287]

You need to recompile php with simplexml support.

[apperrault]

I am having a problem with the temperature graph. All of the other graphs are working great, I am getting the data that i expect. I imported the template, and I see it as an option, but the graph never shows up. When i do a Graph Debug i get:

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  RRDTool Command:

E:/rrdtool/rrdtool.exe graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="WeatherBug API Temperature" \
--base=1000 \
--height=120 \
--width=530 \
--alt-autoscale \
--vertical-label="" \
--slope-mode \
DEF:a="E\:/cacti/rra/emeryville_office_weather_temperature_5358.rrd":Temperature:AVERAGE \
DEF:b="E\:/cacti/rra/emeryville_office_weather_temperature_5358.rrd":FeelsLike:AVERAGE \
AREA:a#00004D:"Temperature"  \
GPRINT:a:LAST:"Current\:%8.2lf%s"  \
GPRINT:a:AVERAGE:"Average\:%8.2lf%s"  \
GPRINT:a:MIN:"Min\:%8.2lf%s"  \
GPRINT:a:MAX:"Max\:%8.2lf%s\n"  \
LINE1:b#FF0000:"Feels Like"  \
GPRINT:b:LAST:" Current\:%8.2lf%s"  \
GPRINT:b:AVERAGE:"Average\:%8.2lf%s"  \
GPRINT:b:MIN:"Min\:%8.2lf%s"  \
GPRINT:b:MAX:"Max\:%8.2lf%s\n" 

RRDTool Says:

ERROR: opening 'E:/cacti/rra/emeryville_office_weather_temperature_5358.rrd': No such file or directory 

Does anyone have any ideas?

When i run the script from the CLI i get:

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 temp:69.7 humidity:36 dewpoint:42 feelslike:70 light:55 pressure:29.9 wind:6 gus
t:10 raintoday:0.00 rainmonth:0.76 rainyear:10.12 rainrate:0.00 rainratemax:0.00

thanks much

app

[rsaeks]

You need to recompile php with simplexml support.

I just re-compiled php 5.2.2 with the --with-simplexml option and I still receive the same error message.

[Mondo1287]

I am having a problem with the temperature graph. All of the other graphs are working great, I am getting the data that i expect. I imported the template, and I see it as an option, but the graph never shows up.

thanks much

app

Did you assign a device to the graphs? If you did, set the device's hostname/ip to any device that it can use snmp to reach. I've seen this behavior before but only if I assign a script based graph to a device that doesn't exist or respond to snmp. It seems that if a data source has a device assigned to it, it will not create the rra's unless it can talk to the device, even if it doesn't need to.

[apperrault]

I got it to work. Not sure what i did, but i deleted everything and re-created it, and all works just fine.

I had asked earlier if it would be possible to use these scripts to monitor multiple locations. At the time, you had said no, but going through the forum, and looking at the other weatherbug script that has been posted (sorry I don't have the link handy) it looks like that one you enter the necesary data (the Location Code) into the page as you are creating the location. I assume that the template then passes that information to the script when it runs. Couldn't we do that with this one, hard code in the API code to the script, so we wouldn't have to remember that every time, but then be prompted when creating the graph for the location code and the Zip code?

If i get some time in the evenings, I will look at the two scripts, and the XML files, and see if i can figure it out, beware, I am not a programmer!!! I know just enough to be dangerous to myself and to others in my vicinity

Would this work?

Let me know

app

[fri]

Thanks for the great script.

I added a bit to check for a valid xml result (just see if the return starts with '<')

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if ($awsdata[0] != "<") {
	echo "result not valid:\n";
	echo $awsdata . "\n";
	exit;
	}

inserted right before this call:
$xml = simplexml_load_string($awsdata);

thanks.

[paulbeard206]

Question, is there a way to setup multiple locations? I have 5 across the country, and one in Canada, and I would love to be able to add all of my sites to my Weather graph group.

Thanks much

app

I can't think of a simple solution for this. I wouldn't mind being able to graph multiple locations myself, so if I get around to it I'll post a write up and probably some updated templates and a script.

Why not take arguments to the script, like the station ID?

[paulbeard206]

The README seems a little vague to me as I have not been mucking about in cacti lately.

This looks OK:

Import all templates
Click Data Sources
Click Add
Selected Data Template: Weatherbug API
Host: None
Click Create
OPTIONAL: Change Data Source rrd filename and internal data source name
Click Save
Click Graph Management from the left

But then it gets a little murky.

When I go to the Graph Mgmt area, I don't see how that all works. I have tried to set up the Data Sources but it doesn't look right to me. The Data Source Item field is WindSpeed, no matter what I do.

[jpingle]

I found this script while looking to update or replace my current weatherbug script, which has been pulling invalid data off the AWS site since they changed it a few months ago.

I followed the directions to install, import the graphs, setup the data sources, get the API key, etc, and everything went without error. However, I couldn't seem to get any data into the RRD files.

When I ran the script at the command line, there were some extra symbols after the dewpoint and feelslike data:

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temp:16.8 humidity:77 dewpoint:11� feelslike:17� light:52 pressure:30.74 wind:3 gust:9 raintoday:0.00 rainmonth:0.00 rainyear:0.00 rainrate:0.00 rainratemax:0.00

I'm not sure if it will show up in that output, but it is an "i" with umlauts, and upside down '?' and "1/2" (0xEF, 0xBF, 0xBD in hex). I tried casting those values to (float) and the extra symbols disappeared, but I still get no data.

I looked at the data input method for the script, and there were two output fields listed for "raidtoday" - I deleted one of them, but still saw no data.

I turned logging up to DEBUG and saw this in the log:

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01/03/2008 12:50:01 PM - CMDPHP: Poller[0] Host[0] DS[996] WARNING: Result from CMD not valid.  Partial Result: 
01/03/2008 12:50:01 PM - CMDPHP: Poller[0] Host[0] DS[996] CMD: php /usr/local/share/cacti/scripts/wbugxml.php, output: U
01/03/2008 12:50:01 PM - CMDPHP: Poller[0] DEBUG: SQL Exec: "insert into poller_output (local_data_id, rrd_name, time, output) values (996, '', '2008-01-03 12:50:01', 'U')"

And there was nothing printed after "Partial result:" or after "U". Checking some other threads here I saw that it may have been a problem executing the script, so I tried increasing the number of concurrent polling processes. I also tried switching from executing it as "php /path/to/script" to using #! and making it an executable script. Neither worked.

Other graphs I have that use script output work just fine.

Any ideas?

FYI- This is on FreeBSD 6.2-STABLE. Using cmd.php as the poller. Cacti 0.8.6i (server is only accessible on local LAN, so it doesn't get updated much.) I may still try updating to 0.8.7a if I get some more time.

[jpingle]

I went ahead and updated cacti to 0.8.7a, and now I am seeing data on the graphs.

Go figure, my very out of date install wasn't working like it should with a new feature

[gandalf]

I found this script while looking to update or replace my current weatherbug script, which has been pulling invalid data off the AWS site since they changed it a few months ago.

Just as a side: There's an updated script that copes with those changes; I'm using it successfully
Reinhard