Mercurial > enso_core

changeset 56:7cbc05f5e4d7

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enso.providers now caches the providers it finds for specific interfaces, and logs info messages when a provider is found for a particular interface.
author Atul Varma <varmaa@toolness.com>
date Mon, 25 Feb 2008 20:55:54 -0800
parents 0f8add45eae9
children 9567b820b299
files enso/providers.py
diffstat 1 files changed, 16 insertions(+), 5 deletions(-) [+]
line wrap: on
line diff
--- a/enso/providers.py	Mon Feb 25 20:36:35 2008 -0800
+++ b/enso/providers.py	Mon Feb 25 20:55:54 2008 -0800
@@ -1,11 +1,22 @@
+import logging
+
 import enso.config
 
+_interfaces = {}
+
 def getInterface( name ):
-    for provider in enso.config.PROVIDERS:
-        interface = provider.provideInterface( name )
-        if interface:
-            return interface
-    raise ProviderNotFoundError( name )
+    if name not in _interfaces:
+        for provider in enso.config.PROVIDERS:
+            interface = provider.provideInterface( name )
+            if interface:
+                logging.info( "Obtained interface '%s' from provider '%s'."
+                              % (name, provider.__name__) )
+                _interfaces[name] = interface
+                break
+    if name in _interfaces:
+        return _interfaces[name]
+    else:
+        raise ProviderNotFoundError( name )
 
 class ProviderNotFoundError( Exception ):
     pass