release(nodemapper) 1.0.2 better error handling and logging

dockerfiles/nodemapper.py

@@ -7,11 +7,12 @@ a list of metrics in a Prometheus compatible structure.
 Use it to start plotting maps of active node connections.
 """
 
-import socket, struct
 from os import environ as env
+from typing import Union
 
 import requests
 import geoip2.database
+from geoip2.models import City
 from geoip2.errors import AddressNotFoundError
 from flask import Flask, make_response
 
@@ -23,42 +24,52 @@ NODE_HOST = env.get('NODE_HOST', 'monerod')
 NODE_PORT = env.get('NODE_PORT', 18083)
 
 
-def get_geoip(ip):
-    """Takes an IP address and determines GeoIP data"""
+def get_geoip(ip) -> Union[City, None]:
+    """Takes an IP address and determines GeoIP data if possible"""
     try:
         with geoip2.database.Reader("./geoip.mmdb") as reader:
             return reader.city(ip)
     except AddressNotFoundError:
+        print(f"{ip} not found in GeoIP database")
+        return None
+    except Exception as e:
+        print(f"Error getting GeoIP data for {ip}: {e}")
         return None
 
-
-@app.route("/metrics")
-def nodes():
-    """Return all nodes"""
-    peers = list()
-    peer_list = requests.get(f'http://{NODE_HOST}:{NODE_PORT}/get_peer_list').json()
-    def add_peer(host, status):
-        geo = get_geoip(host)
-        if geo is None:
-            return
+def generate_prometheus_line(ip, status) -> Union[str, None]:
+    """Generate a Prometheus formatted line for a given peer given an IP and status with GeoIP data included"""
+    geo = get_geoip(ip)
+    if geo is None or 'en' not in geo.continent.names:
+        return None
 
     geostr = 'geoip{{latitude="{lat}", longitude="{lon}", country_code="{country_code}", country_name="{country_name}", status="{status}"}} 1'
-        if geostr not in peers:
-            if 'en' in geo.continent.names:
-                peers.append(geostr.format(
+    # print(f"Found GeoIP for {ip}: {geostr}")
+    return geostr.format(
         lat=geo.location.latitude,
         lon=geo.location.longitude,
         country_code=geo.continent.code,
         country_name=geo.continent.names['en'],
         status=status
-                ))
+    )
+
+@app.route("/metrics")
+def nodes():
+    """Get peer list from monerod and generate Prometheus endpoint output"""
+    peers_found = list()
+    prom_lines = list()
+    peer_list = requests.get(f'http://{NODE_HOST}:{NODE_PORT}/get_peer_list').json()
+    if not peer_list:
+        return ""
     for peer in peer_list['gray_list']:
-        if peer.get('host'):
-            add_peer(peer['host'], 'gray')
+        peer['status'] = 'gray'
+        peers_found.append(peer)
     for peer in peer_list['white_list']:
-        if peer.get('host'):
-            add_peer(peer['host'], 'white')
-    data = '\n'.join(peers)
-    response = make_response(data, 200)
+        peer['status'] = 'white'
+        peers_found.append(peer)
+    for peer in peers_found:
+        prom = generate_prometheus_line(peer['host'], peer['status'])
+        if prom:
+            prom_lines.append(prom)
+    response = make_response('\n'.join(prom_lines), 200)
     response.mimetype = "text/plain"
     return response

release.sh

@@ -12,7 +12,7 @@ MONEROD_VERSION=v0.18.3.2
 MONEROD_BASE=${DH_USER}/monerod
 EXPORTER_VERSION=1.0.0
 EXPORTER_BASE=${DH_USER}/exporter
-NODEMAPPER_VERSION=1.0.1
+NODEMAPPER_VERSION=1.0.2
 NODEMAPPER_BASE=${DH_USER}/nodemapper
 
 if [[ "${IMAGE}" == "nodemapper" ]]