Remove oslo.serialization dependency

Use pure json instead of jsonutils.

Borrow encode function from oslo.serialization to be used in the
utils module.

Change-Id: Ied9a2259a4329a86b4f0853bd1fb187563c0a036

7 files changed, 34 insertions, 27 deletions

diff --git a/ironic_python_agent/inspector.py b/ironic_python_agent/inspector.py
index 31ca0a92..8e570c3b 100644
--- a/ironic_python_agent/inspector.py
+++ b/ironic_python_agent/inspector.py
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import json
 import os
 import time
 
@@ -20,7 +21,6 @@ from ironic_lib import mdns
 from oslo_concurrency import processutils
 from oslo_config import cfg
 from oslo_log import log as logging
-from oslo_serialization import jsonutils
 from oslo_utils import excutils
 import requests
 import stevedore
@@ -290,10 +290,10 @@ def collect_extra_hardware(data, failures):
         return
 
     try:
-        data['data'] = jsonutils.loads(out)
-    except ValueError as exc:
+        data['data'] = json.loads(out)
+    except json.decoder.JSONDecodeError as ex:
         msg = 'JSON returned from hardware-detect cannot be decoded: %s'
-        failures.add(msg, exc)
+        failures.add(msg, ex)
 
 
 def collect_pci_devices_info(data, failures):
diff --git a/ironic_python_agent/ironic_api_client.py b/ironic_python_agent/ironic_api_client.py
index dc6f0cf7..a2e7e1d0 100644
--- a/ironic_python_agent/ironic_api_client.py
+++ b/ironic_python_agent/ironic_api_client.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import json
+
 from oslo_config import cfg
 from oslo_log import log
-from oslo_serialization import jsonutils
 import requests
 import tenacity
 
@@ -103,7 +104,7 @@ class APIClient(object):
 
         try:
             response = self._request('GET', '/')
-            data = jsonutils.loads(response.content)
+            data = json.loads(response.content)
             version = data['default_version']['version'].split('.')
             self._ironic_api_version = (int(version[0]), int(version[1]))
             return self._ironic_api_version
@@ -127,8 +128,8 @@ class APIClient(object):
             if not isinstance(body, dict):
                 # Old ironic format
                 try:
-                    body = jsonutils.loads(body)
-                except ValueError:
+                    body = json.loads(body)
+                except json.decoder.JSONDecodeError:
                     body = {}
 
             text = (body.get('faultstring')
@@ -253,8 +254,8 @@ class APIClient(object):
             return False
 
         try:
-            content = jsonutils.loads(response.content)
-        except Exception as e:
+            content = json.loads(response.content)
+        except json.decoder.JSONDecodeError as e:
             LOG.warning('Error decoding response: %s', e)
             return False
 
diff --git a/ironic_python_agent/tests/unit/test_agent.py b/ironic_python_agent/tests/unit/test_agent.py
index d90b0414..b5e40bf6 100644
--- a/ironic_python_agent/tests/unit/test_agent.py
+++ b/ironic_python_agent/tests/unit/test_agent.py
@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import json
 import socket
 import time
 from unittest import mock
@@ -19,7 +20,6 @@ from unittest import mock
 from ironic_lib import exception as lib_exc
 from oslo_concurrency import processutils
 from oslo_config import cfg
-from oslo_serialization import jsonutils
 import pkg_resources
 from stevedore import extension
 
@@ -192,8 +192,8 @@ class TestBaseAgent(ironic_agent_base.IronicAgentTest):
         # object.
         a_encoded = self.encoder.encode(a)
         b_encoded = self.encoder.encode(b)
-        self.assertEqual(jsonutils.loads(a_encoded),
-                         jsonutils.loads(b_encoded))
+        self.assertEqual(json.loads(a_encoded),
+                         json.loads(b_encoded))
 
     def test_get_status(self):
         started_at = time.time()
diff --git a/ironic_python_agent/tests/unit/test_ironic_api_client.py b/ironic_python_agent/tests/unit/test_ironic_api_client.py
index ba603651..8c05652c 100644
--- a/ironic_python_agent/tests/unit/test_ironic_api_client.py
+++ b/ironic_python_agent/tests/unit/test_ironic_api_client.py
@@ -16,7 +16,6 @@ import json
 from unittest import mock
 
 from oslo_config import cfg
-from oslo_serialization import jsonutils
 import requests
 
 from ironic_python_agent import errors
@@ -149,7 +148,7 @@ class TestBaseIronicPythonAgent(base.IronicAgentTest):
         expected_data = {
             'callback_url': 'http://192.0.2.1:9999',
             'agent_version': version.__version__}
-        self.assertEqual(jsonutils.dumps(expected_data), data)
+        self.assertEqual(json.dumps(expected_data), data)
 
     def test_successful_heartbeat_ip6(self):
         response = FakeResponse(status_code=202)
@@ -172,7 +171,7 @@ class TestBaseIronicPythonAgent(base.IronicAgentTest):
         expected_data = {
             'callback_url': 'http://[fc00:1111::4]:9999',
             'agent_version': version.__version__}
-        self.assertEqual(jsonutils.dumps(expected_data), data)
+        self.assertEqual(json.dumps(expected_data), data)
 
     def test_successful_heartbeat_with_token(self):
         response = FakeResponse(status_code=202)
@@ -197,7 +196,7 @@ class TestBaseIronicPythonAgent(base.IronicAgentTest):
             'callback_url': 'http://192.0.2.1:9999',
             'agent_token': 'magical',
             'agent_version': version.__version__}
-        self.assertEqual(jsonutils.dumps(expected_data), data)
+        self.assertEqual(json.dumps(expected_data), data)
 
     def test_heartbeat_agent_version_unsupported(self):
         response = FakeResponse(status_code=202)
@@ -218,7 +217,7 @@ class TestBaseIronicPythonAgent(base.IronicAgentTest):
         self.assertEqual(API_URL + heartbeat_path, request_args[1])
         expected_data = {
             'callback_url': 'http://[fc00:1111::4]:9999'}
-        self.assertEqual(jsonutils.dumps(expected_data), data)
+        self.assertEqual(json.dumps(expected_data), data)
 
     def test_successful_heartbeat_with_verify_ca(self):
         response = FakeResponse(status_code=202)
@@ -246,7 +245,7 @@ class TestBaseIronicPythonAgent(base.IronicAgentTest):
             'agent_token': 'magical',
             'agent_version': version.__version__,
             'agent_verify_ca': 'I am a cert'}
-        self.assertEqual(jsonutils.dumps(expected_data), data)
+        self.assertEqual(json.dumps(expected_data), data)
         headers = self.api_client.session.request.call_args[1]['headers']
         self.assertEqual(
             '%d.%d' % ironic_api_client.AGENT_VERIFY_CA_IRONIC_VERSION,
diff --git a/ironic_python_agent/tests/unit/test_utils.py b/ironic_python_agent/tests/unit/test_utils.py
index c99f7dca..b975923c 100644
--- a/ironic_python_agent/tests/unit/test_utils.py
+++ b/ironic_python_agent/tests/unit/test_utils.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import base64
 import errno
 import glob
 import io
@@ -25,7 +26,6 @@ from unittest import mock
 
 from ironic_lib import utils as ironic_utils
 from oslo_concurrency import processutils
-from oslo_serialization import base64
 import requests
 import testtools
 
@@ -320,7 +320,7 @@ class TestUtils(ironic_agent_base.IronicAgentTest):
         data = utils.gzip_and_b64encode(io_dict=io_dict)
         self.assertIsInstance(data, str)
 
-        res = io.BytesIO(base64.decode_as_bytes(data))
+        res = io.BytesIO(base64.b64decode(data))
         with tarfile.open(fileobj=res) as tar:
             members = [(m.name, m.size) for m in tar]
             self.assertEqual([('fake-name', len(contents))], members)
diff --git a/ironic_python_agent/utils.py b/ironic_python_agent/utils.py
index 66f6819f..e6454023 100644
--- a/ironic_python_agent/utils.py
+++ b/ironic_python_agent/utils.py
@@ -12,12 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import base64
 from collections import abc
 import contextlib
 import copy
 import errno
 import glob
 import io
+import json
 import os
 import re
 import shutil
@@ -30,8 +32,6 @@ from ironic_lib import utils as ironic_utils
 from oslo_concurrency import processutils
 from oslo_config import cfg
 from oslo_log import log as logging
-from oslo_serialization import base64
-from oslo_serialization import jsonutils
 from oslo_utils import units
 import requests
 import tenacity
@@ -502,6 +502,13 @@ def get_journalctl_output(lines=None, units=None):
     return get_command_output(cmd)
 
 
+def _encode_as_text(s):
+    if isinstance(s, str):
+        s = s.encode('utf-8')
+    s = base64.b64encode(s)
+    return s.decode('ascii')
+
+
 def gzip_and_b64encode(io_dict=None, file_list=None):
     """Gzip and base64 encode files and BytesIO buffers.
 
@@ -527,7 +534,8 @@ def gzip_and_b64encode(io_dict=None, file_list=None):
                 tar.add(f)
 
         fp.seek(0)
-        return base64.encode_as_text(fp.getvalue())
+
+        return _encode_as_text(fp.getvalue())
 
 
 def collect_system_logs(journald_max_lines=None):
@@ -643,8 +651,8 @@ def parse_capabilities(root):
     capabilities = root.get('capabilities', {})
     if isinstance(capabilities, str):
         try:
-            capabilities = jsonutils.loads(capabilities)
-        except (ValueError, TypeError):
+            capabilities = json.loads(capabilities)
+        except json.decoder.JSONDecodeError:
             capabilities = _parse_capabilities_str(capabilities)
 
     if not isinstance(capabilities, dict):
diff --git a/requirements.txt b/requirements.txt
index d84bb89d..314486ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,6 @@ netifaces>=0.10.4 # MIT
 oslo.config>=5.2.0 # Apache-2.0
 oslo.concurrency>=3.26.0 # Apache-2.0
 oslo.log>=4.6.1 # Apache-2.0
-oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.service!=1.28.1,>=1.24.0 # Apache-2.0
 oslo.utils>=3.34.0 # Apache-2.0
 Pint>=0.5 # BSD