[Feature Request] Add Metric Parser for some Hardware specific "strange" values about snmpcollector

[toni-moreno]

We can Add a metric type STRINGPARSER, this new type will need 2 extra data.

1. A Regex with capturing groups
2. A capturing group MAP with declaration of data type per group

Example:

We can extract data from this string

FAN 1: 8725 RPM

with this regex

^([^:*]*)*: *([0-9]*)* *RPM

And we will get 2 values

a) FAN 1
b) 8725

Now we need to map these to values as fields or tags , by example

TAG["fan_number"];FIELD["GAUGE"]

[toni-moreno]

In the above case there is not a really need to add a new tag , in that case the measurement will be..

Measurement: Temp => Fields [ "cpu","sys" ]
Measurement: RPMFan => Fields ["fan1","fan2","fan3","fan4" ,"fan5"]

Both cases has no sense add fan_number as TAG, also each tag will be added to complete measurement. So adding tags at metric("field") level is dangerous.

Taking all these considerations I will remove the TAG option per metric.

In the same way I have doubts about needs of more than one Fields defined in each metric, since a snmpcollector metric is indeed a single field.

Finally the STRINGPARSER metric will have 2 options

1.- REGEXP with only one capturing group for the final value
2.- VALUE TYPE

by example in the above examples

a) for FAN X

REGEXP = ".*: *([0-9]*)* *RPM"
VALUE=INTEGER

b) for TEMP

REGEXP = "[^+]*\+([.0-9]*).*"
VALUE=FLOAT

[toni-moreno]

Thinking a littler more.

Snmpcollector always send numeric data as Floating point numbers. so It is not need to configure the type. We will assume it will be or INTEGER or FLOAT and both will be automatically converted to float.

The only configuration parameter needed is REGEXP !!!