From 74c222b6b4042053cc8c2d0038f37b3f8ee8b9fc Mon Sep 17 00:00:00 2001 From: Mark Washenberger Date: Wed, 29 Jun 2011 14:52:56 -0400 Subject: [PATCH] don't pass zero in to glance image service if no limit or marker are present --- nova/api/openstack/common.py | 35 +++++++++++-------------- nova/api/openstack/images.py | 12 ++++----- nova/tests/api/openstack/test_common.py | 12 ++++++--- nova/tests/api/openstack/test_images.py | 20 +++++++------- 4 files changed, 41 insertions(+), 38 deletions(-) diff --git a/nova/api/openstack/common.py b/nova/api/openstack/common.py index 4da7ec0efb5b..aa8911b62295 100644 --- a/nova/api/openstack/common.py +++ b/nova/api/openstack/common.py @@ -45,23 +45,20 @@ def get_pagination_params(request): exc.HTTPBadRequest() exceptions to be raised. """ - try: - marker = int(request.GET.get('marker', 0)) - except ValueError: - raise webob.exc.HTTPBadRequest(_('marker param must be an integer')) + params = {} + for param in ['marker', 'limit']: + if not param in request.GET: + continue + try: + params[param] = int(request.GET[param]) + except ValueError: + msg = _('%s param must be an integer') % param + raise webob.exc.HTTPBadRequest(msg) + if params[param] < 0: + msg = _('%s param must be positive') % param + raise webob.exc.HTTPBadRequest(msg) - try: - limit = int(request.GET.get('limit', 0)) - except ValueError: - raise webob.exc.HTTPBadRequest(_('limit param must be an integer')) - - if limit < 0: - raise webob.exc.HTTPBadRequest(_('limit param must be positive')) - - if marker < 0: - raise webob.exc.HTTPBadRequest(_('marker param must be positive')) - - return(marker, limit) + return params def limited(items, request, max_limit=FLAGS.osapi_max_limit): @@ -100,10 +97,10 @@ def limited(items, request, max_limit=FLAGS.osapi_max_limit): def limited_by_marker(items, request, max_limit=FLAGS.osapi_max_limit): """Return a slice of items according to the requested marker and limit.""" - (marker, limit) = get_pagination_params(request) + params = get_pagination_params(request) - if limit == 0: - limit = max_limit + limit = params.get('limit', max_limit) + marker = params.get('marker') limit = min(max_limit, limit) start_index = 0 diff --git a/nova/api/openstack/images.py b/nova/api/openstack/images.py index d43340e104de..64d003a0f2ac 100644 --- a/nova/api/openstack/images.py +++ b/nova/api/openstack/images.py @@ -181,9 +181,9 @@ class ControllerV11(Controller): """ context = req.environ['nova.context'] filters = self._get_filters(req) - (marker, limit) = common.get_pagination_params(req) - images = self._image_service.index( - context, filters=filters, marker=marker, limit=limit) + page_params = common.get_pagination_params(req) + images = self._image_service.index(context, filters=filters, + **page_params) builder = self.get_builder(req).build return dict(images=[builder(image, detail=False) for image in images]) @@ -195,9 +195,9 @@ class ControllerV11(Controller): """ context = req.environ['nova.context'] filters = self._get_filters(req) - (marker, limit) = common.get_pagination_params(req) - images = self._image_service.detail( - context, filters=filters, marker=marker, limit=limit) + page_params = common.get_pagination_params(req) + images = self._image_service.detail(context, filters=filters, + **page_params) builder = self.get_builder(req).build return dict(images=[builder(image, detail=True) for image in images]) diff --git a/nova/tests/api/openstack/test_common.py b/nova/tests/api/openstack/test_common.py index 9a9d9125c068..29cb8b944e40 100644 --- a/nova/tests/api/openstack/test_common.py +++ b/nova/tests/api/openstack/test_common.py @@ -161,12 +161,12 @@ class PaginationParamsTest(test.TestCase): def test_no_params(self): """ Test no params. """ req = Request.blank('/') - self.assertEqual(common.get_pagination_params(req), (0, 0)) + self.assertEqual(common.get_pagination_params(req), {}) def test_valid_marker(self): """ Test valid marker param. """ req = Request.blank('/?marker=1') - self.assertEqual(common.get_pagination_params(req), (1, 0)) + self.assertEqual(common.get_pagination_params(req), {'marker': 1}) def test_invalid_marker(self): """ Test invalid marker param. """ @@ -177,10 +177,16 @@ class PaginationParamsTest(test.TestCase): def test_valid_limit(self): """ Test valid limit param. """ req = Request.blank('/?limit=10') - self.assertEqual(common.get_pagination_params(req), (0, 10)) + self.assertEqual(common.get_pagination_params(req), {'limit': 10}) def test_invalid_limit(self): """ Test invalid limit param. """ req = Request.blank('/?limit=-2') self.assertRaises( webob.exc.HTTPBadRequest, common.get_pagination_params, req) + + def test_valid_limit_and_marker(self): + """ Test valid limit and marker parameters. """ + req = Request.blank('/?limit=20&marker=40') + self.assertEqual(common.get_pagination_params(req), + {'marker': 40, 'limit': 20}) diff --git a/nova/tests/api/openstack/test_images.py b/nova/tests/api/openstack/test_images.py index 446d68e9edbd..fc4fc84e29df 100644 --- a/nova/tests/api/openstack/test_images.py +++ b/nova/tests/api/openstack/test_images.py @@ -802,7 +802,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'name': 'testname'} image_service.index( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images?name=testname') @@ -817,7 +817,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'status': 'ACTIVE'} image_service.index( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images?status=ACTIVE') @@ -832,7 +832,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'property-test': '3'} image_service.index( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images?property-test=3') @@ -847,7 +847,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'status': 'ACTIVE'} image_service.index( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images?status=ACTIVE&UNSUPPORTEDFILTER=testname') @@ -862,7 +862,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {} image_service.index( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images') @@ -877,7 +877,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'name': 'testname'} image_service.detail( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images/detail?name=testname') @@ -892,7 +892,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'status': 'ACTIVE'} image_service.detail( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images/detail?status=ACTIVE') @@ -907,7 +907,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'property-test': '3'} image_service.detail( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images/detail?property-test=3') @@ -922,7 +922,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {'status': 'ACTIVE'} image_service.detail( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images/detail?status=ACTIVE&UNSUPPORTEDFILTER=testname') @@ -937,7 +937,7 @@ class ImageControllerWithGlanceServiceTest(test.TestCase): context = object() filters = {} image_service.detail( - context, filters=filters, marker=0, limit=0).AndReturn([]) + context, filters=filters).AndReturn([]) mocker.ReplayAll() request = webob.Request.blank( '/v1.1/images/detail')