TMSS-1912: use orjson which is even faster and supports datetime serialization

Docker/lofar-ci/Dockerfile_ci_scu

@@ -27,7 +27,7 @@ RUN mkdir -p /opt/oracle && \
     unzip instantclient-basic-linux.x64-21.1.0.0.0.zip
 ENV LD_LIBRARY_PATH /opt/oracle/instantclient_21_1:$LD_LIBRARY_PATH
 
-RUN pip3 install cython kombu lxml requests pygcn xmljson mysql-connector-python python-dateutil Django==3.0.9 djangorestframework==3.11.1 djangorestframework-xml ldap==1.0.2 flask fabric coverage python-qpid-proton PyGreSQL numpy h5py psycopg2 testing.postgresql Flask-Testing scipy Markdown django-filter python-ldap python-ldap-test ldap3 django-jsonforms django-json-widget django-jsoneditor drf-yasg flex swagger-spec-validator django-auth-ldap mozilla-django-oidc jsonschema comet pyxb==1.2.5 graphviz isodate astropy packaging django-debug-toolbar pymysql astroplan SimpleWebSocketServer websocket_client drf-flex-fields django-property-filter cx_Oracle cachetools gunicorn gevent ujson
+RUN pip3 install cython kombu lxml requests pygcn xmljson mysql-connector-python python-dateutil Django==3.0.9 djangorestframework==3.11.1 djangorestframework-xml ldap==1.0.2 flask fabric coverage python-qpid-proton PyGreSQL numpy h5py psycopg2 testing.postgresql Flask-Testing scipy Markdown django-filter python-ldap python-ldap-test ldap3 django-jsonforms django-json-widget django-jsoneditor drf-yasg flex swagger-spec-validator django-auth-ldap mozilla-django-oidc jsonschema comet pyxb==1.2.5 graphviz isodate astropy packaging django-debug-toolbar pymysql astroplan SimpleWebSocketServer websocket_client drf-flex-fields django-property-filter cx_Oracle cachetools gunicorn gevent ujson orjson
 
 #Viewflow package 
 RUN pip3 install django-material django-viewflow

SAS/TMSS/backend/src/tmss/settings.py

@@ -212,8 +212,8 @@ REST_FRAMEWORK = {
     'PAGE_SIZE': 50,
     'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
     'DEFAULT_RENDERER_CLASSES': (
-        # we use our own faster ujson serializer
-        'lofar.sas.tmss.tmss.tmssapp.renderers.UJSONRenderer',
+        # we use our own faster orjson serializer
+        'lofar.sas.tmss.tmss.tmssapp.renderers.ORJSONRenderer',
         'rest_framework.renderers.BrowsableAPIRenderer',
     ),
     'DEFAULT_FILTER_BACKENDS': (

SAS/TMSS/backend/src/tmss/tmssapp/renderers/CMakeLists.txt

@@ -5,6 +5,7 @@ set(_py_files
     __init__.py
     PlainTextRenderer.py
     UJSONRenderer.py
+    ORJSONRenderer.py
     )
 
 python_install(${_py_files}

SAS/TMSS/backend/src/tmss/tmssapp/renderers/UJSONRenderer.py

@@ -3,7 +3,7 @@ import ujson
 
 class UJSONRenderer(JSONRenderer):
     """
-    Faster version of plain drf JSONRenderer using ujson
+    Faster version of plain drf JSONRenderer using ujson (which does NOT support datetime serialization)
     """
     def render(self, data, accepted_media_type=None, renderer_context=None):
         """

SAS/TMSS/backend/src/tmss/tmssapp/renderers/__init__.py

 from .PlainTextRenderer import *
 from .UJSONRenderer import *
+from .ORJSONRenderer import *