README
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ValueCounter Aggregator Plugin
The valuecounter plugin counts the occurrence of values in fields and emits the counter once every 'period' seconds.
A use case for the valuecounter plugin is when you are processing a HTTP access log (with the logparser input) and want to count the HTTP status codes.
The fields which will be counted must be configured with the fields
configuration directive. When no fields is provided the plugin will not count
any fields. The results are emitted in fields in the format:
originalfieldname_fieldvalue = count.
Counting fields with a high number of potential values may produce significant amounts of new fields and memory usage, take care to only count fields with a limited set of values.
Configuration
# Count the occurrence of values in fields.
[[aggregators.valuecounter]]
## General Aggregator Arguments:
## The period on which to flush & clear the aggregator.
period = "30s"
## If true, the original metric will be dropped by the
## aggregator and will not get sent to the output plugins.
drop_original = false
## The fields for which the values will be counted
fields = ["status"]
Measurements & Fields
- measurement1
- field_value1
- field_value2
Tags
No tags are applied by this aggregator.
Example Output
Example for parsing a HTTP access log.
telegraf.conf:
[[inputs.logparser]]
files = ["/tmp/tst.log"]
[inputs.logparser.grok]
patterns = ['%{DATA:url:tag} %{NUMBER:response:string}']
measurement = "access"
[[aggregators.valuecounter]]
namepass = ["access"]
fields = ["response"]
/tmp/tst.log
/some/path 200
/some/path 401
/some/path 200
$ telegraf --config telegraf.conf --quiet
access,url=/some/path,path=/tmp/tst.log,host=localhost.localdomain response="200" 1511948755991487011
access,url=/some/path,path=/tmp/tst.log,host=localhost.localdomain response="401" 1511948755991522282
access,url=/some/path,path=/tmp/tst.log,host=localhost.localdomain response="200" 1511948755991531697
access,path=/tmp/tst.log,host=localhost.localdomain,url=/some/path response_200=2i,response_401=1i 1511948761000000000
Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func NewValueCounter ¶
func NewValueCounter() telegraf.Aggregator
NewValueCounter create a new aggregation plugin which counts the occurrences of fields and emits the count.
Types ¶
type ValueCounter ¶
type ValueCounter struct {
Fields []string
// contains filtered or unexported fields
}
ValueCounter an aggregation plugin
func (*ValueCounter) Add ¶
func (vc *ValueCounter) Add(in telegraf.Metric)
Add is run on every metric which passes the plugin
func (*ValueCounter) Push ¶
func (vc *ValueCounter) Push(acc telegraf.Accumulator)
Push emits the counters
func (*ValueCounter) Reset ¶
func (vc *ValueCounter) Reset()
Reset the cache, executed after each push
func (*ValueCounter) SampleConfig ¶
func (*ValueCounter) SampleConfig() string
Source Files