Add search error code & retry

Retry V3 search requests in case of timeout error as well.

Change-Id: I9fde4b6319d31719e09246f1432b58b27097e16b

vmware_nsxlib/v3/client.py

@@ -36,6 +36,7 @@ def http_error_to_exception(status_code, error_code):
              'default': exceptions.ResourceNotFound},
         requests.codes.BAD_REQUEST:
             {'60508': exceptions.NsxIndexingInProgress,
+             '60514': exceptions.NsxSearchTimeout,
              '500045': exceptions.NsxPendingDelete},
         requests.codes.CONFLICT: exceptions.StaleRevision,
         requests.codes.PRECONDITION_FAILED: exceptions.StaleRevision,

vmware_nsxlib/v3/exceptions.py

@@ -152,11 +152,20 @@ class NsxSearchInvalidQuery(NsxLibException):
     message = _("Invalid input for NSX search query. Reason: %(reason)s")
 
 
-class NsxIndexingInProgress(NsxLibException):
+class NsxSearchError(NsxLibException):
+    message = _("Search failed due to error")
+
+
+class NsxIndexingInProgress(NsxSearchError):
     message = _("Bad Request due to indexing is in progress, please retry "
                 "after sometime")
 
 
+class NsxSearchTimeout(NsxSearchError):
+    message = _("Request timed out. This may occur when system is under load "
+                "or running low on resources")
+
+
 class NsxPendingDelete(NsxLibException):
     message = _("An object with the same name is marked for deletion. Either "
                 "use another path or wait for the purge cycle to permanently "

vmware_nsxlib/v3/lib.py

@@ -137,7 +137,7 @@ class NsxLibBase(object):
                                               cursor, page_size)
 
         # Retry the search on case of error
-        @utils.retry_upon_exception(exceptions.NsxIndexingInProgress,
+        @utils.retry_upon_exception(exceptions.NsxSearchError,
                                     max_attempts=self.client.max_attempts)
         def do_search(url):
             return self.client.url_get(url)