bundle dnspython in support/; resolving is always greenbundle-dns

Fixes installation issue when older dnspython is present in system packages
https://github.com/eventlet/eventlet/pull/341

1 files changed, 31 insertions, 0 deletions

diff --git a/eventlet/support/dns/hash.py b/eventlet/support/dns/hash.py
new file mode 100644
index 0000000..966838a
--- /dev/null
+++ b/eventlet/support/dns/hash.py
@@ -0,0 +1,31 @@
+# Copyright (C) 2011 Nominum, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose with or without fee is hereby granted,
+# provided that the above copyright notice and this permission notice
+# appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+"""Hashing backwards compatibility wrapper"""
+
+import hashlib
+
+
+hashes = {}
+hashes['MD5'] = hashlib.md5
+hashes['SHA1'] = hashlib.sha1
+hashes['SHA224'] = hashlib.sha224
+hashes['SHA256'] = hashlib.sha256
+hashes['SHA384'] = hashlib.sha384
+hashes['SHA512'] = hashlib.sha512
+
+
+def get(algorithm):
+    return hashes[algorithm.upper()]