1 files changed, 87 insertions, 0 deletions
diff --git a/eteutils/HEATUtils.py b/eteutils/HEATUtils.py
new file mode 100644
index 0000000..15c5689
--- /dev/null
+++ b/eteutils/HEATUtils.py
@@ -0,0 +1,87 @@
+import json
+import yaml
+import StringIO
+import copy
+from hashlib import md5
+from paramiko import RSAKey
+from paramiko.ssh_exception import PasswordRequiredException
+
+class HEATUtils:
+    """ Utilities useful for constructing OpenStack HEAT requests """
+
+    def get_yaml(self, template_file):
+        """Template Yaml To Json reads a YAML Heat template file returns a JSON string that can be used included in an Openstack Add Stack Request"""
+        if isinstance(template_file, basestring):
+            fin = open(template_file, 'r')
+            yamlobj = yaml.load(fin)
+            return yamlobj
+        return None
+    
+    def template_yaml_to_json(self, template_file):
+        """Template Yaml To Json reads a YAML Heat template file returns a JSON string that can be used included in an Openstack Add Stack Request"""
+        if isinstance(template_file, basestring):
+            fin = open(template_file, 'r')
+            yamlobj = yaml.load(fin)
+            fin.close()
+            if 'heat_template_version' in yamlobj:
+                datetime = yamlobj['heat_template_version']
+                yamlobj['heat_template_version'] = str(datetime)
+            fout = StringIO.StringIO()
+            json.dump(yamlobj, fout)
+            contents = fout.getvalue()
+            fout.close()
+        return contents
+    
+    def env_yaml_to_json(self, template_file):
+        """Env Yaml To JSon reads a YAML Heat env file and returns a JSON string that can be used included in an Openstack Add Stack Request"""
+        if isinstance(template_file, basestring):
+            fin = open(template_file, 'r')
+            yamlobj = yaml.load(fin)
+            fin.close()
+            if 'parameters' in yamlobj:
+                fout = StringIO.StringIO()
+                json.dump(yamlobj['parameters'], fout)
+                contents = fout.getvalue()
+                fout.close()
+                return contents
+        return None
+    
+    def stack_info_parse(self, stack_info):
+        """ returns a flattened version of the Openstack Find Stack results """
+        d = {}
+        if isinstance(stack_info, dict):
+            s = stack_info['stack']
+            p = s['parameters']
+            d = copy.deepcopy(p)
+            d['id'] = s['id']
+            d['name'] = s['stack_name']
+            d['stack_status'] = s['stack_status']
+        return d    
+    
+    
+    def match_fingerprint(self, pvt_file, pw, fingerprint):
+        try:
+            sshKey = RSAKey.from_private_key_file(pvt_file, pw)
+            keybytes = md5(sshKey.asbytes()).hexdigest()
+            printableFingerprint = ':'.join(a+b for a,b in zip(keybytes[::2], keybytes[1::2]))
+            return printableFingerprint == fingerprint.__str__()
+        except PasswordRequiredException:
+            return False    
+    
+    def match_private_key_file_to_keypair(self, files, keypair):
+        for keyfile in files:
+            if (self.match_fingerprint(keyfile, None, keypair['keypair']['fingerprint'])):
+                return keyfile
+        return None
+    
+    def get_openstack_server_ip(self, server, network_name="public", ipversion=4):
+        ipaddr = None
+        try:
+            versions = server['addresses'][network_name]
+            for version in versions:
+                if version['version'] == ipversion:
+                    ipaddr = version['addr']
+                    break;
+        except ValueError:
+            return ipaddr
+        return ipaddr
+\ No newline at end of file