/ 
ETL-Yertl-0.044
River stage zero No dependents
/ ETL::Yertl::Adapter::influxdb

NAME

ETL::Yertl::Adapter::influxdb - Adapter to read/write from InfluxDB time series database

VERSION

version 0.044

SYNOPSIS

my $db = ETL::Yertl::Adapter::influxdb->new( 'influxdb://localhost:8086' );
my @points = $db->read_ts( { metric => 'db.cpu_load.1m' } );
$db->write_ts( { metric => 'db.cpu_load.1m', value => 1.23 } );

DESCRIPTION

This class allows Yertl to read and write time series from the InfluxDB time series database.

This adapter is used by the yts command.

Metric Name Format

InfluxDB has databases, metrics, and fields. In Yertl, the time series is identified by joining the database, metric, and field with periods (.). The field is optional, and defaults to value.

# Database "foo", metric "bar", field "baz"
yts influxdb://localhost foo.bar.baz

# Database "foo", metric "bar", field "value"
yts influxdb://localhost foo.bar

METHODS

new

my $db = ETL::Yertl::Adapter::influxdb->new( 'influxdb://localhost' );
my $db = ETL::Yertl::Adapter::influxdb->new( 'influxdb://localhost:8086' );

Construct a new InfluxDB adapter for the database on the given host and port. Port is optional and defaults to 8086.

read_ts

my @points = $db->read_ts( $query );

Read a time series from the database. $query is a hash reference with the following keys:

metric

The time series to read. For InfluxDB, this is the database, metric, and field separated by dots (.). Field defaults to value.

start

An ISO8601 date/time for the start of the series points to return, inclusive.

end

An ISO8601 date/time for the end of the series points to return, inclusive.

tags

An optional hashref of tags. If specified, only points matching all of these tags will be returned.

write_ts

$db->write_ts( @points );

Write time series points to the database. @points is an array of hashrefs with the following keys:

metric

The metric to write. For InfluxDB, this is the database, metric, and field separated by dots (.). Field defaults to value.

timestamp

An ISO8601 timestamp or UNIX epoch time. Optional. Defaults to the current time.

value

The metric value.

SEE ALSO

ETL::Yertl, yts, Reading data from InfluxDB, Writing data to InfluxDB, InfluxDB Query language

AUTHOR

Doug Bell <preaction@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by Doug Bell.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.