feat(sipgate-balance-exporter): add script

hosts/monitoring/configuration.nix

@@ -56,6 +56,18 @@ with lib;
     script = "${pkgs.python3}/bin/python ${./waldbrandgefahrenstufen-exporter.py}";
   };
 
+  systemd.services.sipgate-balance-exporter = {
+    description = "Sipgate Balance Exporter";
+    wantedBy = [ "multi-user.target" ];
+
+    serviceConfig = {
+      DynamicUser = "yes";
+      Environment = "SIPGATE_TOKEN_PATH=/var/src/secrets/sipgate-balance/apitoken";
+    };
+
+    script = "${pkgs.python3}/bin/python ${./sipgate-balance-exporter.py}";
+  };
+
   services.prometheus.alertmanager = {
     enable = true;
     listenAddress = "[::1]";
@@ -271,6 +283,18 @@ with lib;
           }
         ];
       }
+      {
+        job_name = "sipgate-balance";
+        scrape_interval = "120s";
+	      scrape_timeout = "20s";
+        static_configs = [
+          {
+            targets = [
+              "[::1]:9243"
+            ];
+          }
+        ];
+      }
       {
         job_name = "snmp";
         scrape_interval = "120s";

hosts/monitoring/sipgate-balance-exporter.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+from http.server import HTTPServer, BaseHTTPRequestHandler, HTTPStatus
+import os
+import socket
+import json
+from urllib.request import Request, urlopen
+import xml.etree.ElementTree as ET
+from pathlib import Path
+
+class HTTPServerV6(HTTPServer):
+    address_family = socket.AF_INET6
+
+TOKEN = Path(os.environ.get("SIPGATE_TOKEN_PATH", "apitoken")).read_text().strip()
+
+
+class ExporterRequestHandler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        if self.path == "/":
+            self.make_response("sipgate Guthaben für den Trunk")
+        elif self.path == "/metrics":
+            self.export()
+        else:
+            self.send_error(HTTPStatus.NOT_FOUND, "File not found")
+            return
+
+    def do_HEAD(self):
+        if self.path == "/":
+            self.make_response("sipgate Guthaben für den Trunk", head_only=True)
+        elif self.path == "/metrics":
+            self.export(head_only=True)
+        else:
+            self.send_error(HTTPStatus.NOT_FOUND, "File not found")
+            return
+
+    def export(self, head_only=False):
+        req = Request("https://api.sipgate.com/v2/balance")
+        req.add_header("accept", "application/json")
+        req.add_header("authorization", "Basic " + TOKEN)
+
+        webURL = urlopen(req)
+        data = webURL.read()
+        encoding = webURL.info().get_content_charset('utf-8')
+        d = json.loads(data.decode(encoding))
+
+        print(d)
+
+        balance = d["amount"] / 10000
+        currency = d["currency"]
+       
+        res = "sipgate_balance{{currency=\"{}\"}} {}".format(currency, balance)
+
+        self.make_response(res, head_only=head_only)
+
+    def make_response(self, content, head_only=False):
+        encoded = content.encode("utf-8")
+        self.send_response(HTTPStatus.OK)
+        self.send_header("Content-Type", "text/plain; charset=utf-8")
+        self.send_header("Conten-Length", str(len(encoded)))
+        self.end_headers()
+        if not head_only:
+            self.wfile.write(encoded)
+
+
+def run():
+    with HTTPServerV6(("::1", 9243), ExporterRequestHandler) as httpd:
+        print("Starting sipgate Balance Exporter on http://[{}]:{}".format(*httpd.socket.getsockname()[:2]))
+        httpd.serve_forever()
+
+if __name__ == "__main__":
+    run()