From: Tony Mack <tmack@paris.CS.Princeton.EDU>
Date: Fri, 8 Feb 2013 04:08:46 +0000 (-0500)
Subject: better support for reporting available api versions
X-Git-Tag: sfa-2.1-25~8^2~3
X-Git-Url: http://git.onelab.eu/?p=sfa.git;a=commitdiff_plain;h=7f0832796aa604729648728328ab9a433653bf02

better support for reporting available api versions
---

diff --git a/config/api_versions.xml b/config/api_versions.xml
new file mode 100644
index 00000000..6b30f4ed
--- /dev/null
+++ b/config/api_versions.xml
@@ -0,0 +1,3 @@
+<api_versions>
+    <api_version version="" url=""/>   
+</api_versions>
diff --git a/setup.py b/setup.py
index 75a1e71f..28f7ec96 100755
--- a/setup.py
+++ b/setup.py
@@ -55,6 +55,7 @@ if not os.path.isfile('/etc/redhat-release'): initscripts.append('functions.sfa'
 data_files = [ ('/etc/sfa/', [ 'config/aggregates.xml',
                               'config/registries.xml',
                               'config/default_config.xml',
+                              'config/api_versions.xml',
                               'config/sfi_config',
                               'config/topology',
                               'sfa/managers/pl/pl.rng',
diff --git a/sfa/managers/aggregate_manager.py b/sfa/managers/aggregate_manager.py
index 1d8b420f..4d773fc3 100644
--- a/sfa/managers/aggregate_manager.py
+++ b/sfa/managers/aggregate_manager.py
@@ -1,6 +1,8 @@
+import socket
 from sfa.util.version import version_core
 from sfa.util.xrn import Xrn
 from sfa.util.callids import Callids
+from sfa.server.api_versions import ApiVersions
 
 class AggregateManager:
 
@@ -11,11 +13,13 @@ class AggregateManager:
     def GetVersion(self, api, options):
         xrn=Xrn(api.hrn)
         version = version_core()
+        geni_api_versions = ApiVersions().get_versions()
+        geni_api_versions.append({'2': 'http://%s:%s' % (api.config.SFA_AGGREGATE_HOST, api.config.SFA_AGGREGATE_PORT)})
         version_generic = {
             'interface':'aggregate',
             'sfa': 2,
             'geni_api': 2,
-            'geni_api_versions': {'2': 'http://%s:%s' % (api.config.SFA_AGGREGATE_HOST, api.config.SFA_AGGREGATE_PORT)}, 
+            'geni_api_versions': geni_api_versions, 
             'hrn':xrn.get_hrn(),
             'urn':xrn.get_urn(),
             }
diff --git a/sfa/server/api_versions.py b/sfa/server/api_versions.py
new file mode 100644
index 00000000..2f1ccf73
--- /dev/null
+++ b/sfa/server/api_versions.py
@@ -0,0 +1,47 @@
+import os
+from sfa.util.xml import XML
+from sfa.util.config import Config
+
+class ApiVersions:
+
+    required_fields = ['version', 'url']
+    
+    template = """<api_versions>
+<api_version name="" version="" url="" />
+</api_versions>""" 
+
+    def __init__(self, string=None, filename=None, create=False):
+        self.xml = None
+
+        if create:
+            self.create()
+        elif string:
+            self.load(string)
+        elif filename:
+            self.load(filename)
+        else:
+            # load the default file
+            c = Config()
+            api_versions_file = os.path.sep.join([c.config_path, 'api_versions.xml'])
+            self.load(api_versions_file)
+        
+    def create(self):
+        self.xml = XML(string=ApiVersions.template)
+
+    def load(self, source):
+        self.xml = XML(source)
+
+    def get_versions(self):
+        versions = []
+        for value in self.xml.todict().values():
+            if not value:
+                continue
+            if isinstance(value, list):
+                for item in value:
+                    if isinstance(item, dict) and \
+                       set(ApiVersions.required_fields).issubset(item.keys()):
+                        api_version = {str(item['version']): item['url']}
+                        versions.append(api_version)
+        return versions  
+                
+