Total supply API

funding/api.py

@@ -1,3 +1,4 @@
+import requests
 from flask import jsonify, send_from_directory, Response, request
 from flask_yoloapi import endpoint, parameter
 
@@ -85,3 +86,26 @@ def api_wowlight_version_check(version):
         return False
 
     return versions[version]
+
+
+@app.route('/api/1/wow/supply')
+@endpoint.api()
+def api_wow_supply():
+    from funding.factory import cache
+    cache_key = 'wow_supply'
+    hit = cache.get(cache_key)
+    if hit:
+        return float(hit.get('data', -1))
+
+    try:
+        resp = requests.get('http://explorer.wowne.ro/api/emission', headers={'User-Agent': 'WFS'})
+        resp.raise_for_status()
+        blob = resp.json()
+        assert 'data' in blob
+        assert 'coinbase' in blob['data']
+    except:
+        return Exception('error fetching circulating supply')
+
+    supply = blob['data'].get('coinbase') / 100000000000
+    cache.set(cache_key, {'data': supply}, 120)
+    return supply

funding/templates/api.html

@@ -81,6 +81,22 @@
                     link
                 </a>
             </div>
+
+            <div class="api_container" id="api_wow_supply">
+                <h5><small>GET</small> <code>/api/1/wow/supply</code></h5>
+                <hr>
+                <p>
+                    The current total supply of WOW.
+                </p>
+
+                <b>Example:</b>
+                <pre>curl -vvX GET 'https://funding.wownero.com/api/1/wow/supply'</pre>
+
+                <b>Response:</b>
+                <pre>{
+  "data": 10456897.573388882
+}</pre>
+            </div>
         </div>
 
         {% include 'sidebar.html' %}