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# Copyright (C) 2015 Christopher Baines <mail@cbaines.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from prometheus_client.exposition import MetricsHandler
index_page = """
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Prometheus PgBouncer Exporter</title>
</head>
<body>
<h1>PgBouncer exporter for Prometheus</h1>
<p>
This is a simple exporter for PgBouncer that makes several metrics
available to Prometheus.
</p>
<p>
Metrics are exported from the SHOW LISTS, STATS, POOLS and DATABASES comand
output.
</p>
<a href="/metrics">View metrics</a>
<h2>Example Configuration</h2>
<p>
You must configure Prometheus to scrape the metrics exported here. The port
is 9127, and the configuration should look something like the example
below.
</p>
<pre><code>
scrape_configs:
- job_name: pgbouncer
static_configs:
- targets:
- MACHINE_ADDRESS:9127
</code></pre>
<h2>Information</h2>
<p>
Copyright (C) 2015 Christopher Baines <mail@cbaines.net><br>
<a href="/licence">View Licence</a>
</p>
<p>
The source may be obtained from
<a href="http://git.cbaines.net/prometheus-pgbouncer-exporter/">
this Git repository</a>
</p>
<p>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
</p>
<p>
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
</p>
</body>
</html>
"""
def create_request_handler(licence_location):
class RequestHandler(MetricsHandler):
def do_GET(self):
if self.path == "/metrics":
return super().do_GET()
self.send_response(200)
self.end_headers()
if self.path == "/licence":
with open(
licence_location,
'rb',
) as licence:
self.wfile.write(licence.read())
else:
self.wfile.write(index_page.encode('UTF-8'))
return RequestHandler
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