initial checkin

diff --git a/sfa/rspecs/PGRSpec.py b/sfa/rspecs/PGRSpec.py
new file mode 100755 (executable)
index 0000000..8244bd3
--- /dev/null
+++ b/sfa/rspecs/PGRSpec.py
@@ -0,0 +1,104 @@
+#!/usr/bin/python 
+from __future__ import with_statement
+from lxml import etree
+from xmlbuilder import XMLBuilder
+from StringIO import StringIO
+from sfa.util.xrn import *
+
+xslt='''<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+<xsl:output method="xml" indent="no"/>
+
+<xsl:template match="/|comment()|processing-instruction()">
+    <xsl:copy>
+      <xsl:apply-templates/>
+    </xsl:copy>
+</xsl:template>
+
+<xsl:template match="*">
+    <xsl:element name="{local-name()}">
+      <xsl:apply-templates select="@*|node()"/>
+    </xsl:element>
+</xsl:template>
+
+<xsl:template match="@*">
+    <xsl:attribute name="{local-name()}">
+      <xsl:value-of select="."/>
+    </xsl:attribute>
+</xsl:template>
+</xsl:stylesheet>
+'''
+
+xslt_doc=etree.parse(StringIO(xslt))
+transform=etree.XSLT(xslt_doc)
+
+class PGRSpec:
+    xml_tree = None
+    namespaces = {'rspecv2':'http://www.protogeni.net/resources/rspec/0.2'}
+  
+
+    def __init__(self, rspec="", namespaces={}):
+        try:
+            self.xml_tree = etree.parse(rspec)
+            if namespaces:
+               self.namespaces = namespaces   
+ 
+        except IOError:
+            # 'rspec' file doesnt exist. 'rspec' is proably an xml string
+            try: 
+                self.xml_tree = etree.parse(StringIO(rspec))
+            except:
+                raise IOError("Must specify a xml file or xml string. Received: " + rspec )
+
+    def get_network(self):
+        network = None 
+        root = self.xml_tree.getroot()
+        nodes = root.xpath("//rspecv2:node[@component_manager_uuid][1]", self.namespaces)
+        if nodes:
+            network  = nodes[0].get('component_manager_uuid')
+        return network
+
+    def get_nodes(self, nodes_with_slivers=False):
+        root = self.xml_tree.getroot()
+        nodes = root.xpath("//rspecv2:node", self.namespaces)
+        return nodes
+
+
+    def to_sfa_node(self, site, node, i=0):
+        cm_urn = node.get('component_manager_uuid')
+        c_name = node.get('component_name')
+        c_urn = node.get('component_uuid')
+        c_hrn, _ = urn_to_hrn(c_urn)
+        node_tag = etree.SubElement(site, "node")
+        node_tag.set("component_manager_uuid", cm_urn)
+        node_tag.set("component_name", c_name)
+        node_tag.set("component_uuid", c_urn)
+        hostname_tag = etree.SubElement(node_tag, "hostname").text = c_hrn
+        urn_tag = etree.SubElement(node_tag, "urn").text = c_hrn
+        for child in node.getchildren():
+            node_tag.append(transform(child).getroot())      
+
+
+    def to_sfa_network(self, xml): 
+        network_urn = self.get_network()
+        network,  _ = urn_to_hrn(network_urn)
+        nodes = self.get_nodes()
+        network_tag = etree.SubElement(xml, "network")
+        network_tag.set("name", network)
+        network_tag.set("id", network)
+        site_tag = etree.SubElement(network_tag, "Site")
+        site_tag.set("id", network)
+        name = etree.SubElement(site_tag, "name").text = network
+        i = 0
+        for node in nodes:
+            self.to_sfa_node(site_tag, node, i)
+        
+    def to_sfa_rspec(self):
+        header = '<?xml version="1.0"?>\n'
+        xml = etree.Element("RSpec", type="SFA") 
+        self.to_sfa_network(xml) 
+        return header + etree.tostring(xml, pretty_print=True)
+
+if __name__ == '__main__':
+   rspec = 'protogeni.rspec' 
+   PGRSpec = PGRSpec(rspec)
+   print PGRSpec.to_sfa_rspec()