intial commit

Dockerfile

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+FROM python:3.5-alpine
+
+RUN pip install prometheus_client requests
+
+ENV BIND_PORT 1234
+ENV IMAGES "prom/prometheus, prom/node-exporter"
+
+ADD . /usr/src/app
+WORKDIR /usr/src/app
+
+CMD ["python", "hub_exporter.py"]

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016 Infinity Works Ltd
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# Prometheus Docker Hub Exporter
+
+Exposes metrics of container pulls and stars from the Docker Hub API, to a Prometheus compatible endpoint. 
+
+## Configuration
+
+The image is setup to take two parameters from environment variables:
+`BIND_PORT` The port you wish to run the container on, defaults to 1234
+`IMAGES` The images you wish to monitor, expected in the format "user/image1, user/image2". Can be across different dockerhub users.
+
+## Install and deploy
+
+Run manually from Docker Hub:
+```
+docker run -d --restart=always -p 1234:1234 -e IMAGES="infinityworks/ranch-eye, infinityworks/prom-conf" infinityworks/docker-hub-exporter
+```
+
+Build a docker image:
+```
+docker build -t <image-name> .
+docker run -d --restart=always -p 1234:1234 -e IMAGES="infinityworks/ranch-eye, infinityworks/prom-conf" <image-name>
+```
+
+## Docker compose
+
+```
+docker-hub-exporter:
+    tty: true
+    stdin_open: true
+    expose:
+      - 1234:1234
+    image: infinityworks/docker-hub-exporter
+```
+
+## Metrics
+
+Metrics will be made available on port 1234 by default
+
+```
+# HELP docker_hub_pull_count counter of docker_pulls from the public API
+# TYPE docker_hub_pull_count counter
+docker_hub_pull_count{image="prometheus",user="prom"} 5360660.0
+docker_hub_pull_count{image="node-exporter",user="prom"} 9668841.0
+# HELP docker_hub_star_count counter of docker_stars from the public API
+# TYPE docker_hub_star_count counter
+docker_hub_star_count{image="prometheus",user="prom"} 133.0
+docker_hub_star_count{image="node-exporter",user="prom"} 16.0
+```
+
+## Metadata
+

hub_exporter.py

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+from prometheus_client import start_http_server
+from prometheus_client.core import CounterMetricFamily, REGISTRY
+
+import json
+import requests
+import sys
+import time
+import os
+
+
+class HubCollector(object):
+
+  def collect(self):
+      images = os.getenv('IMAGES', default="thebsdbox/ovcli, rucknar/prom-conf").replace(' ','').split(",")
+      print("Starting exporter")
+      self._pull_metrics = CounterMetricFamily('docker_hub_pull_count', 'counter of docker_pulls from the public API', labels=["image", "user"])
+      self._star_metrics = CounterMetricFamily('docker_hub_star_count', 'counter of docker_stars from the public API', labels=["image", "user"])
+
+      for image in images:
+          print("Getting JSON for " + image)
+          self._get_json(image)
+          print("Getting Metrics for " + image)
+          self._get_metrics()
+          print ("Metrics Updated for " + image)
+
+      yield self._pull_metrics
+      yield self._star_metrics
+
+  def _get_json(self, image):
+      print("Getting JSON Payload for " + image)
+      image_url = 'https://hub.docker.com/v2/repositories/{0}'.format(image)
+      print(image_url)
+      response = requests.get(image_url)
+      self._response_json = json.loads(response.content.decode('UTF-8'))
+
+
+  def _get_metrics(self):
+      image_name = self._response_json['name']
+      user_name = self._response_json['user']
+      self._pull_metrics.add_metric([image_name, user_name], value=self._response_json['pull_count'])
+      self._star_metrics.add_metric([image_name, user_name], value=self._response_json['star_count'])
+
+
+if __name__ == '__main__':
+  start_http_server(int(os.getenv('BIND_PORT')))
+  REGISTRY.register(HubCollector())
+
+  while True: time.sleep(1)