initial commit

follower.py

@@ -1 +1,56 @@
+#!/usr/bin/python
+#
+# Auto-following/reading bot written in Python 2 that has a mission to safe distributed data shared in the twister network
+# (https://github.com/twisterarmy/twister-data-guard)
+# This script based on the official usernameCrawler
+# (https://github.com/miguelfreitas/twister-core/blob/master/contrib/usernameCrawler.py)
+#
+# Downloaded data is cached in a python pickle file, so it may be executed
+# again and it won't need to get everything all over again (you may run it
+# from cron scripts, for example)
 
+import sys, cPickle
+
+dbFileName   = "twisterDataGuard.pickle"
+nodeUserName = "twisterdataguard"
+
+try:
+    from bitcoinrpc.authproxy import AuthServiceProxy
+except ImportError as exc:
+    sys.stderr.write("Error: install python-bitcoinrpc (https://github.com/jgarzik/python-bitcoinrpc)\n")
+    exit(-1)
+
+serverUrl = "http://user:pwd@127.0.0.1:28332"
+if len(sys.argv) > 1:
+    serverUrl = sys.argv[1]
+
+twister = AuthServiceProxy(serverUrl)
+
+class MyDb:
+    lastBlockHash = 0
+
+try:
+    db = cPickle.load(open(dbFileName))
+    nextHash = db.lastBlockHash
+except:
+    db = MyDb()
+    nextHash = twister.getblockhash(0)
+
+print "blockchain reading..."
+
+while True:
+    block = twister.getblock(nextHash)
+    db.lastBlockHash = block["hash"]
+    print "block", str(block["height"]) + "\r",
+    usernames = block["usernames"]
+    for u in usernames:
+        print "follow", u
+        twister.follow(nodeUserName, [u])
+    if block.has_key("nextblockhash"):
+        nextHash = block["nextblockhash"]
+    else:
+        break
+
+cPickle.dump(db,open(dbFileName, "w"))
+
+print "task completed."