sfa/rspecs/pg_rspec_converter.py

   1 #!/usr/bin/python
   2 from __future__ import print_function
   3
   4 from lxml import etree
   5 from sfa.util.xrn import Xrn, urn_to_hrn
   6 from sfa.rspecs.rspec import RSpec
   7 from sfa.rspecs.version_manager import VersionManager
   8
   9 from sfa.util.py23 import StringIO
  10
  11 xslt='''<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  12 <xsl:output method="xml" indent="no"/>
  13
  14 <xsl:template match="/|comment()|processing-instruction()">
  15     <xsl:copy>
  16       <xsl:apply-templates/>
  17     </xsl:copy>
  18 </xsl:template>
  19
  20 <xsl:template match="*">
  21     <xsl:element name="{local-name()}">
  22       <xsl:apply-templates select="@*|node()"/>
  23     </xsl:element>
  24 </xsl:template>
  25
  26 <xsl:template match="@*">
  27     <xsl:attribute name="{local-name()}">
  28       <xsl:value-of select="."/>
  29     </xsl:attribute>
  30 </xsl:template>
  31 </xsl:stylesheet>
  32 '''
  33
  34 xslt_doc=etree.parse(StringIO(xslt))
  35 transform=etree.XSLT(xslt_doc)
  36
  37 class PGRSpecConverter:
  38
  39     @staticmethod
  40     def to_sfa_rspec(rspec, content_type = None):
  41         if not isinstance(rspec, RSpec):
  42             pg_rspec = RSpec(rspec)
  43         else:
  44             pg_rspec = rspec
  45
  46         version_manager = VersionManager()
  47         sfa_version = version_manager._get_version('sfa', '1')
  48         sfa_rspec = RSpec(version=sfa_version)
  49
  50         #nodes = pg_rspec.version.get_nodes()
  51         #sfa_rspec.version.add_nodes(nodes())
  52         #sfa_rspec.version.add_links(pg_rspec.version.get_links())
  53         #return sfa_rspec.toxml()
  54
  55         # get network
  56         networks = pg_rspec.version.get_networks()
  57         network_hrn = networks[0]["name"]
  58         network_element = sfa_rspec.xml.add_element('network', name=network_hrn, id=network_hrn)
  59
  60         # get nodes
  61         pg_nodes_elements = pg_rspec.version.get_nodes()
  62         nodes_with_slivers = pg_rspec.version.get_nodes_with_slivers()
  63         i = 1
  64         for pg_node in pg_nodes_elements:
  65             attribs = dict(pg_node.items())
  66             attribs['id'] = 'n'+str(i)
  67
  68             node_element = network_element.add_element('node')
  69             for attrib in attribs:
  70                 if type(attribs[attrib]) == str:
  71                     node_element.set(attrib, attribs[attrib])
  72             urn = pg_node["component_id"]
  73             if urn:
  74                 if type(urn)==list:
  75                     # legacy code, not sure if urn is ever a list...
  76                     urn = urn[0]
  77                 hostname = Xrn.urn_split(urn)[-1]
  78                 hostname_element = node_element.add_element('hostname')
  79                 hostname_element.set_text(hostname)
  80                 if hostname in nodes_with_slivers:
  81                     node_element.add_element('sliver')
  82
  83             for hardware_type in pg_node["hardware_types"]:
  84                 if "name" in hardware_type:
  85                     node_element.add_element("hardware_type", name=hardware_type["name"])
  86
  87             # just copy over remaining child elements
  88             #for child in pg_node_element.getchildren():
  89             #    node_element.append(transform(child).getroot())
  90             i = i+1
  91
  92         return sfa_rspec.toxml()
  93
  94 if __name__ == '__main__':
  95     import sys
  96     if len(sys.argv) > 1:
  97         print(PGRSpecConverter.to_sfa_rspec(sys.argv[1]))