Fixes Storage-Policy AttributeError in proxy

Closes-Bug: #1989140
Change-Id: I99e4a1daf550d492b28c8a82c0b7a81b2f73dffe

swift/proxy/controllers/base.py

@@ -1840,8 +1840,7 @@ class Controller(object):
         path_env['PATH_INFO'] = "/v1/%s/%s" % (
             str_to_wsgi(account), str_to_wsgi(container))
         info = get_container_info(path_env, self.app)
-        if not info or not is_success(info.get('status')):
-            info = headers_to_container_info({}, 0)
+        if not is_success(info.get('status')):
             info['partition'] = None
             info['nodes'] = None
         else:

test/unit/proxy/controllers/test_base.py

@@ -834,6 +834,23 @@ class TestFuncs(BaseTest):
             self.assertEqual(incomplete_expected,
                              headers_from_container_info(incomplete_info))
 
+    def test_container_info_preserves_storage_policy(self):
+        base = Controller(self.app)
+        base.account_name = 'a'
+        base.container_name = 'c'
+
+        fake_info = {'status': 404, 'storage_policy': 1}
+
+        with mock.patch('swift.proxy.controllers.base.'
+                        'get_container_info', return_value=fake_info):
+            container_info = \
+                base.container_info(base.account_name, base.container_name,
+                                    Request.blank('/'))
+        self.assertEqual(container_info['status'], 404)
+        self.assertEqual(container_info['storage_policy'], 1)
+        self.assertEqual(container_info['partition'], None)
+        self.assertEqual(container_info['nodes'], None)
+
     def test_container_info_needs_req(self):
         base = Controller(self.app)
         base.account_name = 'a'
@@ -844,7 +861,7 @@ class TestFuncs(BaseTest):
             container_info = \
                 base.container_info(base.account_name,
                                     base.container_name, Request.blank('/'))
-        self.assertEqual(container_info['status'], 0)
+        self.assertEqual(container_info['status'], 503)
 
     def test_headers_to_account_info_missing(self):
         resp = headers_to_account_info({}, 404)

test/unit/proxy/test_server.py

@@ -7415,6 +7415,43 @@ class BaseTestECObjectController(BaseTestObjectController):
         self.assertEqual(len(error_lines), 0)  # sanity
         self.assertEqual(len(warn_lines), 0)  # sanity
 
+    def test_GET_ec_deleted(self):
+        prolis = _test_sockets[0]
+        prosrv = _test_servers[0]
+
+        container_name = 'ec_deleted'
+        self.put_container(self.ec_policy.name, container_name)
+
+        # delete container
+        sock = connect_tcp(('localhost', prolis.getsockname()[1]))
+        fd = sock.makefile('rwb')
+        fd.write(('DELETE /v1/a/%s HTTP/1.1\r\n'
+                  'Host: localhost\r\n'
+                  'Connection: close\r\n'
+                  '\r\n' % container_name).encode('ascii'))
+        fd.flush()
+        headers = readuntil2crlfs(fd)
+        exp = b'HTTP/1.1 20'
+        self.assertEqual(headers[:len(exp)], exp)
+
+        # download from deleted container
+        sock = connect_tcp(('localhost', prolis.getsockname()[1]))
+        fd = sock.makefile('rwb')
+        fd.write(('GET /v1/a/%s/no-object-there HTTP/1.1\r\n'
+                  'Host: localhost\r\n'
+                  'Connection: close\r\n'
+                  'X-Storage-Token: t\r\n'
+                  '\r\n' % container_name).encode('ascii'))
+        fd.flush()
+        headers = readuntil2crlfs(fd)
+        exp = b'HTTP/1.1 404'
+        self.assertEqual(headers[:len(exp)], exp)
+
+        error_lines = prosrv.logger.get_lines_for_level('error')
+        warn_lines = prosrv.logger.get_lines_for_level('warning')
+        self.assertEqual(len(error_lines), 0)  # sanity
+        self.assertEqual(len(warn_lines), 0)  # sanity
+
     def test_conditional_GET_ec(self):
         # sanity
         self.assertEqual('erasure_coding', self.ec_policy.policy_type)