* Update to Go 1.18.
* Update minimum Go version to 1.17.
* Update Go modules for 1.17 format.
* Bump Go modules
* Enable dependabot.
* Update Prometheus common files.
* Fixup yamllint.
Signed-off-by: SuperQ <superq@gmail.com>
* Introduce histogram support
Prior to this change, the custom queries were restricted to counters and
gauges.
This change introduces a new ColumnUsage, namely HISTOGRAM, that expects
the column to contain an array of upper inclusive bounds for each
observation bucket in the emitted metric. It also expects three more
columns to be present with the suffixes:
- `_bucket`, containing an array of cumulative counters for the
observation buckets;
- `_sum`, the total sum of all observed values; and
- `_count`, the count of events that have been observed.
A flag has been added to the MetricMap struct to easily identify metrics
that should emit a histogram and the construction of a histogram metric
is aided by the pg.Array function and a new helper dbToUint64 function.
Finally, and example of usage is given in queries.yaml.
fixes#402
Signed-off-by: Corin Lawson <corin@responsight.com>
* Introduces tests for histogram support
Prior to this change, the histogram support was untested.
This change introduces a new integration test that reads a user query
containing a number of histogram metrics. Also, additional checks have
been added to TestBooleanConversionToValueAndString to test dbToUint64.
Signed-off-by: Corin Lawson <corin@responsight.com>
* Use struct instead of interface{} when parsing query user
* Use MappingOptions
* Split function to be more testable
* Rename function to parseUserQueries
* Start to add test about query parsing
This commit implements a massive refactor of the repository, and
moves the build system over to use Mage (magefile.org) which should
allow seamless building across multiple platforms.
