prometheus.ex

What's Changed

• fix link to monitoring article by @progsmile in https://github.com/deadtrickster/prometheus.ex/pull/30
• newer elixir and erlang versions in travis-ci config by @jlgeering in https://github.com/deadtrickster/prometheus.ex/pull/32
• Elixir 1.11 compatibility by @feld in https://github.com/deadtrickster/prometheus.ex/pull/36
• Fix elixir stacktrace warning in forgotten place by @dylan-chong in https://github.com/deadtrickster/prometheus.ex/pull/39
• Misc doc changes by @kianmeng in https://github.com/deadtrickster/prometheus.ex/pull/38
• Create prometheus_and_grafana_setup.md by @skosch in https://github.com/deadtrickster/prometheus.ex/pull/34
• Migrate from Travis CI to GitHub Actions by @zeha in https://github.com/deadtrickster/prometheus.ex/pull/41
• Fix mnesia_test by @zeha in https://github.com/deadtrickster/prometheus.ex/pull/40
• Prometheus.Erlang: Fix Kernel.Utils.defdelegate usage for Elixir 1.14 by @lanodan in https://github.com/deadtrickster/prometheus.ex/pull/47

New Contributors

• @progsmile made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/30
• @jlgeering made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/32
• @feld made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/36
• @dylan-chong made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/39
• @kianmeng made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/38
• @skosch made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/34
• @zeha made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/41
• @lanodan made their first contribution in https://github.com/deadtrickster/prometheus.ex/pull/47

Full Changelog: https://github.com/deadtrickster/prometheus.ex/compare/v3.0.5...v3.1.0

Breaking change:

All observe_duration/track_inprogress functions no longer do implicit fun execution.

def track_checked_out_sockets(checkout_fun) do
  Gauge.track_inprogress([name: :my_pool_checked_out], checkout_fun)
end

has to be rewritten as

def track_checked_out_sockets(checkout_fun) do
  Gauge.track_inprogress([name: :my_pool_checked_out], checkout_fun.())
end

Counter

New helper macros:

• count_exceptions [with optional Exception type]
• count_no_exceptions

Metrics

Metrics can be created declaratively:

@histogram [name: :http_request_duration_milliseconds,
            labels: [:method],
            buckets: [100, 300, 500, 750, 1000],
            help: "Http Request execution time"]

when used, __declare_prometheus_metrics__/0 will be auto-generated.

• Update to prometheus.erl 3.3
• Boolean metric
• Default values
• Text format rendering speedup (>30%)

Mnesia instrumentation helpers

In sync with https://github.com/deadtrickster/prometheus.erl/releases/tag/v3.0.0