berg · May 10, 2012 07:05 · May 10, 2012
diff --git a/gistfile1.py b/gistfile1.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+
+#
+# Script to poll DOCSIS downstream channel counters
+# on Arris TM702G cable modems and similar
+#
+# licensed under creative commons CC0 (public domain)
+#
+
+import functools
+import operator
+import time
+
+import requests
+import BeautifulSoup
+
+def fetch():
+    url = 'http://192.168.100.1/cgi-bin/status_cgi'
+    body = requests.get(url).content
+
+    bs = BeautifulSoup.BeautifulSoup(body)
+    downstream_table = bs.findAll('table')[1].findAll('tr')[1:]
+    octet_counts = []
+    for tr in downstream_table:
+        octet_counts.append(int(tr.findAll('td')[6].text))
+
+    return octet_counts
+
+def unit_convert(time_delta, byte_delta):
+    # Convert bytes/sec -> kbit/sec
+    return (byte_delta * 8.0) / (time_delta * 1000.0)
+
+counts = fetch()
+timestamp = time.time()
+
+with file('output.txt', 'a') as f:
+    while True:
+        time.sleep(5)
+        new_counts = fetch()
+        new_timestamp = time.time()
+
+        time_delta = new_timestamp - timestamp
+        byte_delta = map(lambda (a, b): a - b, zip(new_counts, counts))
+
+        convert = functools.partial(unit_convert, time_delta)
+
+        individual_delta = map(convert, byte_delta)
+        total_delta = sum(individual_delta)
+
+        line = [str(new_timestamp), '%0.2f' % time_delta]
+
+        for i in xrange(len(individual_delta)):
+            #line.append('DS %d: %7.1f kBit/sec' % (i + 1, bps_delta[i]))
+            line.append('%0.1f' % individual_delta[i])
+
+        line.append('%0.1f' % total_delta)
+
+        print ','.join(line)
+
+        f.write(','.join(line))
+        f.write('\n')
+
+        counts = new_counts
+        timestamp = new_timestamp
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