Add daemon API sketch

utils/daemonping.py

@@ -0,0 +1,36 @@
+import argparse
+import logging
+import operator
+import re
+
+from monero.backends.jsonrpc import JSONRPCDaemon
+from monero import Daemon
+
+def url_data(url):
+    gs = re.compile(
+        r'^(?P<host>[^:\s]+)(?::(?P<port>[0-9]+))?$'
+        ).match(url).groupdict()
+    return dict(filter(operator.itemgetter(1), gs.items()))
+
+def get_daemon():
+    argsparser = argparse.ArgumentParser(description="Display daemon info")
+    argsparser.add_argument('daemon_rpc_url', nargs='?', type=url_data, default='127.0.0.1:18081',
+        help="Daemon RPC URL [host[:port]]")
+    argsparser.add_argument('-v', dest='verbosity', action='count', default=0,
+        help="Verbosity (repeat to increase; -v for INFO, -vv for DEBUG")
+    args = argsparser.parse_args()
+    level = logging.WARNING
+    if args.verbosity == 1:
+        level = logging.INFO
+    elif args.verbosity > 1:
+        level = logging.DEBUG
+    logging.basicConfig(level=level, format="%(asctime)-15s %(message)s")
+    return Daemon(JSONRPCDaemon(**args.daemon_rpc_url))
+
+d = get_daemon()
+info = d.get_info()
+print("Net: {net:>18s}\n"
+    "Height:      {height:10d}\n"
+    "Difficulty:  {difficulty:10d}".format(
+        net='test' if info['testnet'] else 'live',
+        **info))