Elukey has uploaded a new change for review. ( https://gerrit.wikimedia.org/r/389475 )
Change subject: [WIP] First commit ...................................................................... [WIP] First commit Change-Id: I90d3d84304c5f9f783e1b52afa203f04eb066a05 --- A LICENSE A README.md A debian/changelog A debian/compact A debian/control A debian/copyright A debian/init A debian/rules A debian/service A debian/source/format A druid_exporter/__init__.py A druid_exporter/collector.py A druid_exporter/exporter.py A setup.py A test/test_collector.py A tox.ini 16 files changed, 736 insertions(+), 0 deletions(-) git pull ssh://gerrit.wikimedia.org:29418/operations/software/druid_exporter refs/changes/75/389475/1 diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..261eeb9 --- /dev/null +++ b/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/README.md b/README.md new file mode 100644 index 0000000..709abac --- /dev/null +++ b/README.md @@ -0,0 +1,16 @@ +# Prometheus exporter for Druid (http://druid.io/) + +Collects HTTP POST JSON data coming from Druid daemons and expose them formatted +following the [Prometheus](https://prometheus.io) standards. + +## Running + +The easiest way to run `druid_exporter` is via a virtualenv: + + virtualenv .venv + .venv/bin/python setup.py develop + .venv/bin/druid_exporter + +By default metrics are exposed on TCP port `8000`: + +TODO diff --git a/debian/changelog b/debian/changelog new file mode 100644 index 0000000..c4a7d75 --- /dev/null +++ b/debian/changelog @@ -0,0 +1,5 @@ +prometheus-hhvm-exporter (0.1-1) unstable; urgency=low + + * Initial packaging + + -- Luca Toscano <[email protected]> Fri, 06 Oct 2017 13:53:36 +0000 diff --git a/debian/compact b/debian/compact new file mode 100644 index 0000000..ec63514 --- /dev/null +++ b/debian/compact @@ -0,0 +1 @@ +9 diff --git a/debian/control b/debian/control new file mode 100644 index 0000000..b659314 --- /dev/null +++ b/debian/control @@ -0,0 +1,19 @@ +Source: prometheus-druid-exporter +Maintainer: Luca Toscano <[email protected]> +Section: python +Priority: optional +Build-Depends: debhelper (>= 9), + dh-python, + dh-systemd, + python3-setuptools (>= 0.6b3), + python3-all, + python3-nose, + python3-prometheus-client, + python3-requests +Standards-Version: 3.9.8 + +Package: prometheus-druid-exporter +Architecture: all +Depends: ${misc:Depends}, ${python3:Depends} +Description: Prometheus exporter for Druid (http://druid.io/) + diff --git a/debian/copyright b/debian/copyright new file mode 100644 index 0000000..0dcd8d2 --- /dev/null +++ b/debian/copyright @@ -0,0 +1,24 @@ +Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ +Upstream-Name: hhvm_exporter +Source: https://gerrit.wikimedia.org/r/operations/software/hhvm_exporter + +Files: * +Copyright: 2017 Luca Toscano <[email protected]> + 2017 Wikimedia Foundation +License: Apache-2.0 + +License: Apache-2.0 + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + . + http://www.apache.org/licenses/LICENSE-2.0 + . + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + . + On Debian systems, the full text of the Apache License version 2 can be found + in the file `/usr/share/common-licenses/Apache-2.0'. diff --git a/debian/init b/debian/init new file mode 100755 index 0000000..90bf685 --- /dev/null +++ b/debian/init @@ -0,0 +1,64 @@ +#!/bin/sh +# kFreeBSD do not accept scripts as interpreters, using #!/bin/sh and sourcing. +if [ true != "$INIT_D_SCRIPT_SOURCED" ] ; then + set "$0" "$@"; INIT_D_SCRIPT_SOURCED=true . /lib/init/init-d-script +fi +### BEGIN INIT INFO +# Provides: prometheus-druid-exporter +# Required-Start: $remote_fs $syslog +# Required-Stop: $remote_fs $syslog +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: Prometheus exporter for druid +### END INIT INFO + +# Author: Filippo Giunchedi <[email protected]> + +DESC="Prometheus exporter for druid" +DAEMON=/usr/bin/prometheus-druid-exporter +NAME=prometheus-druid-exporter +USER=prometheus +PIDFILE=/var/run/prometheus/prometheus-druid-exporter.pid +LOGFILE=/var/log/prometheus/prometheus-druid-exporter.log + +ARGS="" +[ -r /etc/default/$NAME ] && . /etc/default/$NAME + +HELPER=/usr/bin/daemon +HELPER_ARGS="--name=$NAME --output=$LOGFILE --pidfile=$PIDFILE --user=$USER" + +do_start_prepare() +{ + mkdir -p `dirname $PIDFILE` || true + chown -R $USER: `dirname $LOGFILE` + chown -R $USER: `dirname $PIDFILE` +} + +do_start_cmd() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + $HELPER $HELPER_ARGS --running && return 1 + $HELPER $HELPER_ARGS -- $DAEMON $ARGS || return 2 + return 0 +} + +do_stop_cmd() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + $HELPER $HELPER_ARGS --running || return 1 + $HELPER $HELPER_ARGS --stop || return 2 + # wait for the process to really terminate + for n in 1 2 3 4 5; do + sleep 1 + $HELPER $HELPER_ARGS --running || break + done + $HELPER $HELPER_ARGS --running || return 0 + return 2 +} diff --git a/debian/rules b/debian/rules new file mode 100755 index 0000000..7ac6d64 --- /dev/null +++ b/debian/rules @@ -0,0 +1,15 @@ +#!/usr/bin/make -f + +export DH_VERBOSE=1 +export PYBUILD_NAME=druid_exporter + +DEBPKGNAME ?= $(shell dpkg-parsechangelog | sed -n -e 's/^Source: //p') + +%: + dh $@ --with python3,systemd --buildsystem=pybuild + +override_dh_auto_install: + dh_auto_install + # Rename the binary to match the debian package. + mv -v debian/$(DEBPKGNAME)/usr/bin/druid_exporter \ + debian/$(DEBPKGNAME)/usr/bin/$(DEBPKGNAME) diff --git a/debian/service b/debian/service new file mode 100644 index 0000000..1bb889f --- /dev/null +++ b/debian/service @@ -0,0 +1,12 @@ +[Unit] +Description=Prometheus exporter for Druid (http://druid.io/) +Documentation=https://prometheus.io/docs/introduction/overview/ + +[Service] +Restart=always +User=prometheus +EnvironmentFile=-/etc/default/prometheus-druid-exporter +ExecStart=/usr/bin/prometheus-druid-exporter $ARGS + +[Install] +WantedBy=multi-user.target diff --git a/debian/source/format b/debian/source/format new file mode 100644 index 0000000..163aaf8 --- /dev/null +++ b/debian/source/format @@ -0,0 +1 @@ +3.0 (quilt) diff --git a/druid_exporter/__init__.py b/druid_exporter/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/druid_exporter/__init__.py diff --git a/druid_exporter/collector.py b/druid_exporter/collector.py new file mode 100644 index 0000000..9f421a6 --- /dev/null +++ b/druid_exporter/collector.py @@ -0,0 +1,229 @@ +# Copyright 2017 Luca Toscano +# Wikimedia Foundation +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +from prometheus_client.core import (CounterMetricFamily, GaugeMetricFamily, + HistogramMetricFamily, Summary) +import logging + +log = logging.getLogger(__name__) + + +class DruidCollector(object): + scrape_duration = Summary( + 'druid_scrape_duration_seconds', 'Druid scrape duration') + + def __init__(self, allowed_daemons): + self.supported_metric_names = [ + 'query/time', + 'query/bytes', + 'query/node/time', + 'query/node/bytes', + 'query/cache/total/numEntries', + 'query/cache/total/sizeBytes', + 'query/cache/total/hits', + 'query/cache/total/misses', + 'query/cache/total/evictions', + 'query/cache/total/timeouts', + 'query/cache/total/errors', + 'jvm/pool/committed', + 'jvm/pool/init', + 'jvm/pool/max', + 'jvm/pool/used', + 'jvm/bufferpool/count', + 'jvm/bufferpool/used', + 'jvm/bufferpool/capacity', + 'jvm/mem/init', + 'jvm/mem/max', + 'jvm/mem/used', + 'jvm/mem/committed', + 'jvm/gc/count', + 'jvm/gc/time', + 'segment/max', + 'segment/count', + 'segment/pendingDelete', + 'segment/used', + ] + self.metric_buckets = { + 'query/time': ['10', '100', '500', '10000', 'inf'], + 'query/bytes': ['10', '100', '500', '10000', 'inf'], + 'query/node/time': ['10', '100', '500', '10000', 'inf'], + 'query/node/bytes': ['10', '100', '500', '10000', 'inf'], + } + + # Format: {metric_name: {bucket2: value, bucket2: value, ...} + self.histograms = { + 'query/time': None, + 'query/bytes': None, + 'query/node/time': None, + 'query/node/bytes': None, + } + + self.counters = { + 'query/cache/total/numentries': None, + 'query/cache/total/sizebytes': None, + 'query/cache/total/hits': None, + 'query/cache/total/misses': None, + 'query/cache/total/evictions': None, + 'query/cache/total/timeouts': None, + 'query/cache/total/errors': None, + 'segment/max': None, + 'segment/count': None, + 'segment/pendingDelete': None, + 'segment/used': None, + } + + self.allowed_daemons = allowed_daemons + + def _get_query_histograms(self, daemon): + return { + 'query/time': HistogramMetricFamily( + 'druid_' + daemon + '_query_time', + 'Milliseconds taken to complete a query.', + labels=['datasource', 'le']), + 'query/bytes': HistogramMetricFamily( + 'druid_' + daemon + '_query_bytes', + 'Number of bytes returned in query response.', + labels=['datasource', 'le']), + 'query/node/time': HistogramMetricFamily( + 'druid_' + daemon + '_query_node_time', + 'Milliseconds taken to query individual ' + 'historical/realtime nodes.', + labels=['datasource', 'server', 'le']), + 'query/node/bytes': HistogramMetricFamily( + 'druid_' + daemon + '_query_node_bytes', + 'number of bytes returned from querying individual ' + 'historical/realtime nodes.', + labels=['datasource', 'server', 'le']), + } + + def _get_cache_counters(self, daemon): + return { + 'query/cache/total/numentries': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_numentries', + 'Number of cache entries.'), + 'query/cache/total/sizebytes': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_sizebytes', + 'Size in bytes of cache entries.'), + 'query/cache/total/hits': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_hits', + 'Number of cache hits.'), + 'query/cache/total/misses': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_misses', + 'Number of cache misses.'), + 'query/cache/total/evictions': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_evictions', + 'Number of cache evictions.'), + 'query/cache/total/timeouts': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_timeouts', + 'Number of cache timeouts.'), + 'query/cache/total/errors': GaugeMetricFamily( + 'druid_' + daemon + '_query_cache_total_errors', + 'Number of cache errors.'), + } + + def _get_historical_health_metrics(self): + return { + 'segment/max': GaugeMetricFamily( + 'druid_historical_max_segment_bytes', + 'Maximum byte limit available for segments.'), + 'segment/count': GaugeMetricFamily( + 'druid_historical_segment_count', + 'Number of served segments.'), + 'segment/used': GaugeMetricFamily( + 'druid_historical_segment_used_bytes', + 'Bytes used for served segments.'), + 'segment/pendingDelete': GaugeMetricFamily( + 'druid_historical_segment_pending_delete_bytes', + 'On-disk size in bytes of segments that are waiting ' + 'to be cleared out.'), + } + + @scrape_duration.time() + def collect(self): + + # Metrics common to Broekr and Historical + for daemon in ['broker', 'historical']: + query_metrics = self._get_query_histograms(daemon) + cache_metrics = self._get_cache_counters(daemon) + + for metric in query_metrics: + if not self.histograms[metric]: + continue + if daemon in self.histograms[metric].keys(): + for datasource in self.histograms[metric][daemon]: + query_metrics[daemon][metric].add_metric( + [datasource], + buckets=self.histograms[metric][daemon][datasource].items(), + sum_value=sum([v for (b, v) in + self.histograms[metric][daemon][datasource].items()]) + ) + yield query_metrics[daemon][metric] + + for metric in cache_metrics: + if not self.counters[metric]: + cache_metrics[metric].add_metric([], float('nan')) + else: + cache_metrics[metric].add_metric([], self.counters[metric]) + yield cache_metrics[metric] + + # Metrics only available for Historical + # For more info check 'io.druid.server.metrics.HistoricalMetricsMonitor' + # in http://druid.io/docs/0.9.2/configuration/index.html + historical_health_metrics = self._get_historical_health_metrics() + for metric in historical_health_metrics: + if not self.counters[metric]: + historical_health_metrics[metric].add_metric([], float('nan')) + else: + historical_health_metrics[metric].add_metric([], self.counters[metric]) + yield historical_health_metrics[metric] + + def register_datapoint(self, datapoint): + if datapoint['metric'] not in self.supported_metric_names: + return + + # Transform the metric name into a metrics' key + daemon_name = str(datapoint['service'].replace('druid/', '').lower()) + metric_name = str(datapoint['metric'].lower()) + metric_value = float(datapoint['value']) + + if daemon_name not in self.allowed_daemons: + log.error('Received metric from a daemon that is not allowed ({}), ' + 'dropping it.'.format(daemon_name)) + return + + if metric_name in self.histograms: + datasource = str(datapoint['datasource']) + if not self.histograms[metric_name]: + self.histograms[metric_name] = { + daemon_name: {datasource: {}} + } + for bucket in self.metric_buckets[metric_name]: + self.histograms[metric_name][daemon_name][datasource][bucket] = 0 + if metric_value <= float(bucket): + self.histograms[metric_name][daemon_name][datasource][bucket] += 1 + else: + if daemon_name not in self.histograms[metric_name].keys(): + self.histograms[metric_name][daemon_name] = {datasource: {}} + else: + if datasource not in self.histograms[metric_name][daemon_name].keys(): + self.histograms[metric_name][daemon_name][datasource] = {} + for bucket in self.metric_buckets[metric_name]: + if metric_value <= float(bucket): + if bucket not in self.histograms[metric_name][daemon_name][datasource].keys(): + self.histograms[metric_name][daemon_name][datasource][bucket] = 1 + else: + self.histograms[metric_name][daemon_name][datasource][bucket] += 1 + elif metric_name in self.counters: + # Override by default with the last value emitted by Druid + self.counters[metric_name] = metric_value diff --git a/druid_exporter/exporter.py b/druid_exporter/exporter.py new file mode 100644 index 0000000..e7ac398 --- /dev/null +++ b/druid_exporter/exporter.py @@ -0,0 +1,99 @@ +#!/usr/bin/python +# Copyright 2017 Luca Toscano +# Wikimedia Foundation +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +from __future__ import print_function +from __future__ import absolute_import +import collector +from prometheus_client import make_wsgi_app, REGISTRY +from wsgiref.simple_server import make_server +import argparse +import json +import logging +import sys + +log = logging.getLogger(__name__) +app = make_wsgi_app() + +SUPPORTED_DAEMONS = ['broker', 'historical'] + + +def druid_app(environ, start_response): + if environ['REQUEST_METHOD'] == 'POST': + try: + request_body_size = int(environ.get('CONTENT_LENGTH', 0)) + request_body = environ['wsgi.input'].read(request_body_size) + datapoints = json.loads(request_body) + # The HTTP metrics emitter can batch datapoints and send them to + # a specific endpoint stated in the logs (this tool). + for datapoint in datapoints: + druid_collector.register_datapoint(datapoints) + status = '200 OK' + headers = [('Content-Type', 'text/plain')] + except Exception as e: + log.exception( + "Error while processing the following POST data: {}" + .format(request_body) + ) + status = '400 Bad Request' + headers = [('Content-Type', 'text/plain')] + start_response(status, headers) + return '' + else: + return app(environ, start_response) + + +def main(): + parser = argparse.ArgumentParser() + parser.add_argument('-l', '--listen', metavar='ADDRESS', + help='Listen on this address', default=':8000') + parser.add_argument('-d', '--debug', action='store_true', + help='Enable debug logging') + parser.add_argument('-c', '--collect-from', + type=str, default='all', + help='Comma separated list of daemons to collect ' + 'metrics from. Default to the special value \'all\', ' + 'that corresponds to the list of supported daemons: {}' + .format(SUPPORTED_DAEMONS)) + args = parser.parse_args() + + if args.debug: + logging.basicConfig(level=logging.DEBUG) + else: + logging.basicConfig(level=logging.WARNING) + + collect_metrics_from = [] + + if args.collect_from == 'all': + daemons = SUPPORTED_DAEMONS + else: + daemons = args.collect_from.split(',') + for daemon in daemons: + if daemon not in SUPPORTED_DAEMONS: + log.error('The following daemon is not supported: {}'.format(daemon)) + return 1 + + address, port = args.listen.split(':', 1) + log.info('Starting druid_exporter on %s:%s', address, port) + + global druid_collector + druid_collector = collector.DruidCollector(daemons) + REGISTRY.register(druid_collector) + + httpd = make_server(address, int(port), druid_app) + httpd.serve_forever() + + +if __name__ == "__main__": + sys.exit(main()) diff --git a/setup.py b/setup.py new file mode 100644 index 0000000..ae7b22f --- /dev/null +++ b/setup.py @@ -0,0 +1,19 @@ +from setuptools import setup + +setup(name='druid_exporter', + version='0.1', + description='Prometheus exporter for Druid', + url='https://github.com/wikimedia/operations-software-druid_exporter', + author='Luca Toscano', + author_email='[email protected]', + license='Apache License, Version 2.0', + packages=['druid_exporter'], + install_requires=[ + 'prometheus-client', + ], + entry_points={ + 'console_scripts': [ + 'druid_exporter = druid_exporter.exporter:main' + ] + }, +) diff --git a/test/test_collector.py b/test/test_collector.py new file mode 100644 index 0000000..f3afa2b --- /dev/null +++ b/test/test_collector.py @@ -0,0 +1,23 @@ +# Copyright 2017 Luca Toscano +# Wikimedia Foundation +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +import unittest + +from druid_exporter.collector import DruidCollector + + +class TestDruidollector(unittest.TestCase): + def setUp(self): + self.collector = DruidCollector() diff --git a/tox.ini b/tox.ini new file mode 100644 index 0000000..d8c695f --- /dev/null +++ b/tox.ini @@ -0,0 +1,8 @@ +[tox] +envlist = py3,py2 + +[testenv] +deps=nose +commands= + nosetests \ + [] # substitute with tox' positional arguments -- To view, visit https://gerrit.wikimedia.org/r/389475 To unsubscribe, visit https://gerrit.wikimedia.org/r/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I90d3d84304c5f9f783e1b52afa203f04eb066a05 Gerrit-PatchSet: 1 Gerrit-Project: operations/software/druid_exporter Gerrit-Branch: master Gerrit-Owner: Elukey <[email protected]> _______________________________________________ MediaWiki-commits mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/mediawiki-commits
