From bf6e6e718cdc7488e2da87b21e258ccc065fe499 Mon Sep 17 00:00:00 2001
From: Jesse Andrews <anotherjesse@gmail.com>
Date: Thu, 27 May 2010 23:05:26 -0700
Subject: initial commit

---
 nova/utils.py | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 nova/utils.py

(limited to 'nova/utils.py')

diff --git a/nova/utils.py b/nova/utils.py
new file mode 100644
index 000000000..0cfa2cf6c
--- /dev/null
+++ b/nova/utils.py
@@ -0,0 +1,96 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+# Copyright [2010] [Anso Labs, LLC]
+# 
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+# 
+#        http://www.apache.org/licenses/LICENSE-2.0
+# 
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+
+"""
+System-level utilities and helper functions.
+"""
+
+import logging
+import socket
+import sys
+import os.path
+import inspect
+import subprocess
+import random
+
+def fetchfile(url, target):
+    logging.debug("Fetching %s" % url)
+#    c = pycurl.Curl()
+#    fp = open(target, "wb")
+#    c.setopt(c.URL, url)
+#    c.setopt(c.WRITEDATA, fp)
+#    c.perform()
+#    c.close()
+#    fp.close()
+    execute("curl %s -o %s" % (url, target))
+
+def execute(cmd, input=None):
+    #logging.debug("Running %s" % (cmd))
+    obj = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE,
+    stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    result = None
+    if input != None:
+        result = obj.communicate(input)
+    else:
+        result = obj.communicate()
+    obj.stdin.close()
+    if obj.returncode:
+        logging.debug("Result was %s" % (obj.returncode))
+    return result
+
+def abspath(s):
+    return os.path.join(os.path.dirname(__file__), s)
+
+def default_flagfile(filename='nova.conf'):
+    for arg in sys.argv:
+        if arg.find('flagfile') != -1:
+            break
+    else:
+        if not os.path.isabs(filename):
+            # turn relative filename into an absolute path
+            script_dir = os.path.dirname(inspect.stack()[-1][1])
+            filename = os.path.abspath(os.path.join(script_dir, filename))
+        if os.path.exists(filename):
+            sys.argv = sys.argv[:1] + ['--flagfile=%s' % filename] + sys.argv[1:]
+
+def debug(arg):
+    logging.debug('debug in callback: %s', arg)
+    return arg
+
+def runthis(prompt, cmd):
+    logging.debug("Running %s" % (cmd))
+    logging.debug(prompt % (subprocess.call(cmd.split(" "))))
+
+
+def generate_uid(topic, size=8):
+    return '%s-%s' % (topic, ''.join([random.choice('01234567890abcdefghijklmnopqrstuvwxyz') for x in xrange(size)]))
+
+def generate_mac():
+    mac = [0x00, 0x16, 0x3e, random.randint(0x00, 0x7f),
+           random.randint(0x00, 0xff), random.randint(0x00, 0xff)
+           ]
+    return ':'.join(map(lambda x: "%02x" % x, mac))
+
+def last_octet(address):
+    return int(address.split(".")[-1])
+
+def get_my_ip():
+    ''' returns the actual ip of the local machine.
+    '''
+    csock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    csock.connect(('www.google.com', 80))
+    (addr, port) = csock.getsockname()
+    csock.close()
+    return addr
-- 
cgit