Help Needed in Writing New exporter for CSV file(comma separated value)

[Navjyot Ramteke]

Hi All,

          We have a process which periodically writes all the stats into a CSV file in one folder(in linux virtual machine). The name of the file will contain the date and timestamp to distinguish different files. 

folder contents:

stats_13_12_12_00.csv >>> 13th dec, 12 am

stats_13_12_12_05.csv

stats_13_12_12_10.csv

stats_13_12_12_15.csv

stats_13_12_12_20.csv

stats_13_12_12_25.csv

in this example, our process will keep writing new file every 5 min. so next file will be written at time 12:30.

the format of the file is given below.

csv file format:

720,500,300,10,"abc",0,,120

this file will contains values corresponding to various stats. the ordering is fixed.

in this example

total_bytes = 720

input_bytes =  500

output_bytes = 300

dropped_bytes =  10

interface_name = abc

error_count = 0

invalid_pkt =  <not applicable. hence its value is NULL>

charged_bytes = 120

we will have 3000-5000 such variables in each file.

Now we wanted to fed these variables in Prometheus so that it can be viewed on Grafana.

is there any existing exporter which we can use it?

if no, can we enhance some existing exporter?

else any help in writing exporter from scratch.

Regards

Navjyot.

[Benjamin Ridley]

One easy way might be to utilise the Textfile Collector, which is part of the Node Exporter, and allows you to expose files on your system for collection by Prometheus.

In this case, you would need to write some kind of script that reads your statistics files, then spits out textfile that contains the metrics, and Node exporter will then serve them.

You can find example scripts here that will give you examples of how to create the text file.

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