basic calc whisper scalability, case 1 (with colors!)

whisper_scalability/whisper.py

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+class bcolors:
+    HEADER = '\033[95m'
+    OKBLUE = '\033[94m'
+    OKGREEN = '\033[92m'
+    WARNING = '\033[93m'
+    FAIL = '\033[91m'
+    ENDC = '\033[0m'
+    BOLD = '\033[1m'
+    UNDERLINE = '\033[4m'
+
+# We assume an envelope is 1kb
+envelope_size = 1
+
+# 100, 10k, 1m - jumping two orders of magnitude
+n_users = 10000
+
+# Due to negotiation, data sync, etc
+# Rough assumed overhead, constant factor
+envelopes_per_message = 10
+
+# Receiving messages per day
+# TODO: Split up by channel, etc
+received_messages_per_day = 100
+
+# This means means 10*100*1= 1 MB per day
+
+# oh, it is envelopes per time
+
+# everyone received all messages
+
+def bandwidth_usage(n_users):
+    print(n_users)
+
+#print(n_users * envelopes_per_message * received_messages_per_day)
+
+# How much bandwidth does a receiving node waste?
+
+# We assume a node is not relaying messages, but only sending
+
+# Goal:
+# - make it user-bound, not network-bound
+# - reasonable bw and fetch time
+
+# TODO: Offline take into account
+
+# ~1GB per month, ~ 30 mb per day, ~1 mb per hour
+
+# Offline proportion
+
+# Case 1: only receiving messages meant for you
+load = envelope_size * envelopes_per_message * \
+    received_messages_per_day
+
+if load < 10000:
+    color_level = bcolors.OKBLUE
+elif load < 30000:
+    color_level = bcolors.OKGREEN
+elif load < 100000:
+    color_level = bcolors.WARNING
+else:
+    color_level = bcolors.FAIL
+
+print bcolors.HEADER + "Case 1. Only receiving messages meant for you" + bcolors.ENDC
+print ""
+print "Assumptions:"
+print "- A1. Envelope size (static): " + str(envelope_size) + "kb"
+print "- A2. Envelopes / message (static): " + str(envelopes_per_message)
+print "- A3. Received messages / day (static): " + str(received_messages_per_day)
+print ""
+print color_level + "Receiving bandwidth is " + str(load/1000) + "mb/day" + bcolors.ENDC
+print ""
+
+# Case 2: receiving all messages
+
+# print bcolors.WARNING + "Warning: No active frommets remain. Continue?" + bcolors.ENDC