add geoip node mapping and cleanup dockerfiles

dockerfiles/nodemapper.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+
+"""
+This is a lightweight web service which will retrieve a peer list 
+from a Monero node, determine GeoIP information, and return 
+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
+
+import requests
+import geoip2.database
+from flask import Flask, make_response
+
+
+app = Flask(__name__)
+
+
+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"""
+    with geoip2.database.Reader("./geoip.mmdb") as reader:
+        return reader.city(ip)
+
+
+@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)
+        geostr = 'geoip{{latitude="{lat}", longitude="{lon}", country_code="{country_code}", country_name="{country_name}", status="{status}"}} 1'
+        if geostr not in peers:
+            peers.append(geostr.format(
+                lat=geo.location.latitude,
+                lon=geo.location.longitude,
+                country_code=geo.continent.code,
+                country_name=geo.continent.names['en'],
+                status=status
+            ))
+    for peer in peer_list['gray_list']:
+        if peer.get('host'):
+            add_peer(peer['host'], 'gray')
+    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)
+    response.mimetype = "text/plain"
+    return response