文件列表:

.dir-locals.el (392, 2020-02-16)
.travis.yml (298, 2020-02-16)
LICENSE (1449, 2020-02-16)
doc/ (0, 2020-02-16)
doc/edoc-info (102, 2020-02-16)
doc/elli_prometheus.md (1235, 2020-02-16)
doc/elli_prometheus_config.md (1260, 2020-02-16)
doc/erlang.png (2109, 2020-02-16)
doc/stylesheet.css (869, 2020-02-16)
elvis.config (1342, 2020-02-16)
rebar.config (1057, 2020-02-16)
rebar.config.script (226, 2020-02-16)
rebar.lock (169, 2020-02-16)
src/ (0, 2020-02-16)
src/elli_prometheus.app.src (383, 2020-02-16)
src/elli_prometheus.erl (13726, 2020-02-16)
src/elli_prometheus_config.erl (1708, 2020-02-16)
test/ (0, 2020-02-16)
test/elli_prometheus_test_callback.erl (488, 2020-02-16)
test/elli_prometheus_tests.erl (13731, 2020-02-16)

# elli_prometheus [![Hex.pm][hex badge]][hex package] [![Documentation][docs badge]][docs] [![Erlang][erlang badge]][erlang downloads] [![Travis CI][build badge]][travis link] [![Coveralls][coverage badge]][coveralls link] [![BSD-3 License][license badge]](https://github.com/elli-lib/elli_prometheus/blob/master/LICENSE) *[Elli][] middleware for collecting stats via [Prometheus][].* ## Metrics How Elli represents timings: ``` request_start headers_start ...headers receiving & parsing... headers_end body_start ...body receiving & parsing... body_end user_start ...callback code... user_end send_start ...sending reply.... send_end request_end ``` How Elli represents sizes: Each request has `resp_headers` key and, depending on response type, `resp_body` or `file` or `chunks` key. - `resp_header` is always present and denotes response headers wire size; - `resp_body` set for regular responses; - `file` set for file responses; - `chunks` set for chunked responses, wire size too. Elli_prometheus exports the following metrics: - `http_requests_total`, counter. Total count of requests; - `http_request_duration_microseconds`, histogram. The difference between `request_end` and `request_start`; - `http_request_headers_microseconds`, histogram. The difference between `headers_end` and `headers_start`; - `http_request_body_microseconds`, histogram. The difference between `body_end` and `body_start`; - `http_request_user_microseconds`, histogram. The difference between `user_end` and `user_start`; - `http_request_send_microseconds`, histogram. The difference between `send_end` and `send_start`; - `http_response_size_bytes`, summary. Total size of the response, includes headers, body|file|chuncks; - `http_response_headers_size_bytes`, summary. Size of the response headers; - `http_response_body_size`, summary. Size of the response body; For failed requests: - `http_requests_failed_total{reason}`, Total count of failed requests. Reasons: - `request_closed` - the client closes the connection when Elli is waiting for the next request; - `request_timeout` - the client times out when Elli is waiting for the request; - `request_parse_error` - the request is invalid and cannot be parsed or it contains a path Elli cannot parse or doesn't support; - `client_closed` - the client closes the connection or socket closed unexpectedly; - `client_timeout` - data can't be received within a timeout; - `bad_request` - Elli detects a request isn't well formatted or doesn't conform to the configured limits. - `http_bad_requests_total{reason}` - Total count of `bad_request` errors. Reasons: - `too_many_headers`; - `body_size`. - `http_client_closed_total{request_part}` - Total count of `client_closed` errors. Parts: - `receiving_headers`; - `receiving_body`; - `before_response`. - `http_client_timeout_total{request_part}` Total count of `client_timeout` errors. Parts: - `receiving_headers`; - `receiving_body`. Exporter metrics: * `telemetry_scrape_duration_seconds`
Type: summary.
Labels: `registry`, `content_type`.
Scrape duration. * `telemetry_scrape_size_bytes`
Type: summary.
Labels: `registry`, `content_type`.
Scrape size, not encoded. * `telemetry_scrape_encoded_size_bytes`
Type: summary.
Labels: `registry`, `content_type`, `encoding`.
Scrape size, encoded. ## Dependencies `elli_prometheus` requires [Elli][] and [Prometheus][], but neither are included in this project. It has been tested and is known to work with `{elli, "2.0.1"}` and `{prometheus, "3.1.1"}`. [hex badge]: https://img.shields.io/hexpm/v/elli_prometheus.svg?maxAge=2592000 [hex package]: https://hex.pm/packages/elli_prometheus [erlang badge]: https://img.shields.io/badge/erlang-%E2%89%A518.0-red.svg [erlang downloads]: http://www.erlang.org/downloads [build badge]: https://travis-ci.org/elli-lib/elli_prometheus.svg?branch=develop [travis link]: https://travis-ci.org/elli-lib/elli_prometheus [docs badge]: https://img.shields.io/badge/docs-edown-green.svg [docs]: doc/README.md [coverage badge]: https://coveralls.io/repos/github/elli-lib/elli_prometheus/badge.svg?branch=develop [coveralls link]: https://coveralls.io/github/elli-lib/elli_prometheus?branch=develop [license badge]: https://img.shields.io/badge/license-BSD--3-blue.svg [Elli]: https://github.com/elli-lib/elli [Prometheus]: https://github.com/deadtrickster/prometheus.erl

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