Machine properties and periodic ping (#10381)

* add machine properties

* remove non working polyfill

* add periodic task

* add tests and docs

* fix ping task

* add int and float type

* Update api_version.py

---------

Co-authored-by: Matthias Mair <code@mjmair.com>

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Added `order_queryset` report helper function in [#10439](https://github.com/inventree/InvenTree/pull/10439)
+- Added much more detailed status information for machines to the API endpoint (including backend and frontend changes) in [#10381](https://github.com/inventree/InvenTree/pull/10381)
 
 ### Changed
 

docs/docs/plugins/machines/overview.md

@@ -107,6 +107,7 @@ The machine type class gets instantiated for each machine on server startup and
           - check_setting
           - set_status
           - set_status_text
+          - set_properties
 
 ### Drivers
 
@@ -152,6 +153,7 @@ class MyXyzAbcDriverPlugin(MachineDriverMixin, InvenTreePlugin):
           - init_machine
           - update_machine
           - restart_machine
+          - ping_machines
           - get_machines
           - handle_error
 
@@ -224,3 +226,24 @@ class MyXYZDriver(ABCBaseDriver):
         # ... do some init stuff here
         machine.set_status_text("Paper missing")
 ```
+
+### Machine Properties
+
+Machine properties such as the device model, firmware version, and total pages printed can be displayed in the machine detail drawer to provide users with relevant device information.
+
+To achieve this, use the `machine.set_properties` function to set the desired properties. This can be combined with a periodic task, such as `ping_machines`, to keep the information up to date.
+
+```py
+from plugin.machine import MachineProperty
+
+class MyXYZDriver(ABCBaseDriver):
+    # ...
+    def ping_machines(self):
+        for machine in self.get_machines():
+            # ... fetch machine info
+            props: list[MachineProperty] = [
+                { 'key': 'Model', 'value': 'ABC' },
+            ]
+            machine.set_properties(props)
+
+```

docs/docs/settings/global.md

@@ -243,6 +243,12 @@ Refer to the [return order settings](../sales/return_order.md#return-order-setti
 {{ globalsetting("ENABLE_PLUGINS_INTERFACE") }}
 {{ globalsetting("ENABLE_PLUGINS_MAILS") }}
 
+### Machine Settings
+
+| Name | Description | Default | Units |
+| ---- | ----------- | ------- | ----- |
+{{ globalsetting("MACHINE_PING_ENABLED") }}
+
 ### Project Codes
 
 Refer to the [project code settings](../concepts/project_codes.md).

src/backend/InvenTree/InvenTree/api_version.py

@@ -1,12 +1,15 @@
 """InvenTree API version information."""
 
 # InvenTree API version
-INVENTREE_API_VERSION = 400
+INVENTREE_API_VERSION = 401
 
 """Increment this API version number whenever there is a significant change to the API that any clients need to know about."""
 
 INVENTREE_API_TEXT = """
 
+v401 -> 2025-10-04 : https://github.com/inventree/InvenTree/pull/10381
+    - Adds machine properties to machine API endpoints
+
 v400 -> 2025-10-05 : https://github.com/inventree/InvenTree/pull/10486
     - Adds return datatypes for admin/config and flags entpoints
 

src/backend/InvenTree/InvenTree/cache.py

@@ -91,6 +91,13 @@ def get_cache_config(global_cache: bool) -> dict:
         else:
             redis_url = f'redis://{cache_host()}:{cache_port()}/0'
 
+        keepalive_options = {
+            'TCP_KEEPCNT': cache_setting('keepalive_count', 5, typecast=int),
+            'TCP_KEEPIDLE': cache_setting('keepalive_idle', 1, typecast=int),
+            'TCP_KEEPINTVL': cache_setting('keepalive_interval', 1, typecast=int),
+            'TCP_USER_TIMEOUT': cache_setting('user_timeout', 1000, typecast=int),
+        }
+
         return {
             'BACKEND': 'django_redis.cache.RedisCache',
             'LOCATION': redis_url,
@@ -105,18 +112,11 @@ def get_cache_config(global_cache: bool) -> dict:
                         'tcp_keepalive', True, typecast=bool
                     ),
                     'socket_keepalive_options': {
-                        socket.TCP_KEEPCNT: cache_setting(
+                        # Only include options which are available on this platform
-                            'keepalive_count', 5, typecast=int
+                        # e.g. MacOS does not have TCP_KEEPIDLE and TCP_USER_TIMEOUT
-                        ),
+                        getattr(socket, key): value
-                        socket.TCP_KEEPIDLE: cache_setting(
+                        for key, value in keepalive_options.items()
-                            'keepalive_idle', 1, typecast=int
+                        if hasattr(socket, key)
-                        ),
-                        socket.TCP_KEEPINTVL: cache_setting(
-                            'keepalive_interval', 1, typecast=int
-                        ),
-                        socket.TCP_USER_TIMEOUT: cache_setting(
-                            'user_timeout', 1000, typecast=int
-                        ),
                     },
                 },
             },

src/backend/InvenTree/common/setting/system.py

@@ -1130,4 +1130,12 @@ SYSTEM_SETTINGS: dict[str, InvenTreeSettingsKeyType] = {
         'default': False,
         'validator': bool,
     },
+    'MACHINE_PING_ENABLED': {
+        'name': _('Enable Machine Ping'),
+        'description': _(
+            'Enable periodic ping task of registered machines to check their status'
+        ),
+        'default': True,
+        'validator': bool,
+    },
 }

src/backend/InvenTree/generic/states/tests.py

@@ -253,7 +253,7 @@ class ApiTests(InvenTreeAPITestCase):
         # MachineStatus model
         machine_status = response.data['LabelPrinterStatus']
         self.assertEqual(machine_status['status_class'], 'LabelPrinterStatus')
-        self.assertEqual(len(machine_status['values']), 6)
+        self.assertEqual(len(machine_status['values']), 8)
         connected = machine_status['values']['CONNECTED']
         self.assertEqual(connected['key'], 100)
         self.assertEqual(connected['name'], 'CONNECTED')

src/backend/InvenTree/machine/__init__.py

@@ -1,4 +1,15 @@
-from machine.machine_type import BaseDriver, BaseMachineType, MachineStatus
+from machine.machine_type import (
+    BaseDriver,
+    BaseMachineType,
+    MachineProperty,
+    MachineStatus,
+)
 from machine.registry import registry
 
-__all__ = ['BaseDriver', 'BaseMachineType', 'MachineStatus', 'registry']
+__all__ = [
+    'BaseDriver',
+    'BaseMachineType',
+    'MachineProperty',
+    'MachineStatus',
+    'registry',
+]

src/backend/InvenTree/machine/machine_type.py

@@ -1,6 +1,6 @@
 """Base machine type/base driver."""
 
-from typing import TYPE_CHECKING, Any, Literal, Union
+from typing import TYPE_CHECKING, Any, Literal, TypedDict, Union
 
 from generic.states import StatusCode
 from InvenTree.helpers_mixin import (
@@ -48,6 +48,24 @@ class MachineStatus(StatusCode):
     """
 
 
+class MachineProperty(TypedDict, total=False):
+    """Type definition for machine properties.
+
+    Attributes:
+        key: Key of the property (required)
+        value: Value of the property (required)
+        group: Grouping of the property
+        type: Type of the property (one of 'str', 'bool', 'progress', 'int', 'float') default = 'str'
+        max_progress: Maximum value for progress type (required if type is 'progress')
+    """
+
+    key: str
+    value: Union[str, bool, int, float]
+    group: str
+    type: Literal['str', 'bool', 'progress', 'int', 'float']
+    max_progress: Union[int, None]
+
+
 class BaseDriver(
     ClassValidationMixin,
     ClassProviderMixin,
@@ -117,6 +135,12 @@ class BaseDriver(
             machine: Machine instance
         """
 
+    def ping_machines(self):
+        """Ping all machines using this driver to check if they are online.
+
+        This is called periodically by a background task if the setting 'MACHINE_PING_ENABLED' is active.
+        """
+
     def get_machines(self, **kwargs):
         """Return all machines using this driver (By default only initialized machines).
 
@@ -139,7 +163,8 @@ class BaseDriver(
         Arguments:
             error: Exception or string
         """
-        self.set_shared_state('errors', [*self.errors, error])
+        if error not in self.errors:
+            self.set_shared_state('errors', [*self.errors, error])
 
     # --- state getters/setters
     @property
@@ -321,7 +346,8 @@ class BaseMachineType(
         Arguments:
             error: Exception or string
         """
-        self.set_shared_state('errors', [*self.errors, error])
+        if error not in self.errors:
+            self.set_shared_state('errors', [*self.errors, error])
 
     def reset_errors(self):
         """Helper function for resetting the error list for a machine."""
@@ -406,6 +432,26 @@ class BaseMachineType(
         """
         self.set_shared_state('status_text', status_text)
 
+    def set_properties(self, properties: list[MachineProperty]):
+        """Set the machine properties. This can be any arbitrary dict with model information, etc.
+
+        Arguments:
+            properties: The new properties dict to set
+        """
+        for p in properties:
+            if 'type' not in p:
+                p['type'] = 'str'
+
+            if 'group' not in p:
+                p['group'] = ''
+
+            if p['type'] == 'progress' and 'max_progress' not in p:
+                p['max_progress'] = 100
+            if 'max_progress' not in p:
+                p['max_progress'] = None
+
+        self.set_shared_state('properties', properties)
+
     # --- state getters/setters
     @property
     def initialized(self) -> bool:
@@ -440,3 +486,13 @@ class BaseMachineType(
     def status_text(self) -> str:
         """Machine status text."""
         return self.get_shared_state('status_text', '')
+
+    @property
+    def properties(self) -> list[MachineProperty]:
+        """Return a dict of all relevant machine properties."""
+        return self.get_shared_state('properties', [])
+
+    @property
+    def properties_dict(self) -> dict[str, MachineProperty]:
+        """Return a dict of all machine properties with key as dict key."""
+        return {prop['key']: prop for prop in self.properties}

src/backend/InvenTree/machine/machine_types/label_printer.py

@@ -221,16 +221,21 @@ class LabelPrinterStatus(MachineStatus):
         CONNECTED: The printer is connected and ready to print
         UNKNOWN: The printer status is unknown (e.g. there is no active connection to the printer)
         PRINTING: The printer is currently printing a label
+        WARNING: The printer is in an unknown warning condition
         NO_MEDIA: The printer is out of media (e.g. the label spool is empty)
+        PAPER_JAM: The printer has a paper jam
         DISCONNECTED: The driver cannot establish a connection to the printer
+        ERROR: The printer is in an unknown error condition
     """
 
     CONNECTED = 100, _('Connected'), ColorEnum.success
     UNKNOWN = 101, _('Unknown'), ColorEnum.secondary
     PRINTING = 110, _('Printing'), ColorEnum.primary
+    WARNING = 200, _('Warning'), ColorEnum.warning
     NO_MEDIA = 301, _('No media'), ColorEnum.warning
     PAPER_JAM = 302, _('Paper jam'), ColorEnum.warning
     DISCONNECTED = 400, _('Disconnected'), ColorEnum.danger
+    ERROR = 500, _('Error'), ColorEnum.danger
 
 
 class LabelPrinterMachine(BaseMachineType):
@@ -250,7 +255,7 @@ class LabelPrinterMachine(BaseMachineType):
         }
     }
 
-    MACHINE_STATUS = LabelPrinterStatus
+    MACHINE_STATUS: type[LabelPrinterStatus] = LabelPrinterStatus
 
     default_machine_status = LabelPrinterStatus.UNKNOWN
 

src/backend/InvenTree/machine/registry.py

@@ -125,7 +125,8 @@ class MachineRegistry(
 
     def handle_error(self, error: Union[Exception, str]):
         """Helper function for capturing errors with the machine registry."""
-        self.set_shared_state('errors', [*self.errors, error])
+        if error not in self.errors:
+            self.set_shared_state('errors', [*self.errors, error])
 
     @machine_registry_entrypoint(check_reload=False, check_ready=False)
     def initialize(self, main: bool = False):

src/backend/InvenTree/machine/serializers.py

@@ -10,6 +10,22 @@ from machine import registry
 from machine.models import MachineConfig, MachineSetting
 
 
+class MachinePropertySerializer(serializers.Serializer):
+    """Serializer for a MachineProperty."""
+
+    class Meta:
+        """Meta for serializer."""
+
+        fields = ['key', 'value', 'group', 'type', 'max_progress']
+        read_only_fields = fields
+
+    key = serializers.CharField()
+    value = serializers.CharField()
+    group = serializers.CharField()
+    type = serializers.CharField()
+    max_progress = serializers.IntegerField()
+
+
 class MachineConfigSerializer(serializers.ModelSerializer):
     """Serializer for a MachineConfig."""
 
@@ -30,9 +46,10 @@ class MachineConfigSerializer(serializers.ModelSerializer):
             'machine_errors',
             'is_driver_available',
             'restart_required',
+            'properties',
         ]
 
-        read_only_fields = ['machine_type', 'driver']
+        read_only_fields = ['machine_type', 'driver', 'properties']
 
     initialized = serializers.SerializerMethodField('get_initialized')
     status = serializers.SerializerMethodField('get_status')
@@ -41,6 +58,12 @@ class MachineConfigSerializer(serializers.ModelSerializer):
     machine_errors = serializers.SerializerMethodField('get_errors')
     is_driver_available = serializers.SerializerMethodField('get_is_driver_available')
     restart_required = serializers.SerializerMethodField('get_restart_required')
+    properties = serializers.ListField(
+        child=MachinePropertySerializer(),
+        source='machine.properties',
+        read_only=True,
+        default=[],
+    )
 
     def get_initialized(self, obj: MachineConfig) -> bool:
         """Serializer method for the initialized field."""

src/backend/InvenTree/machine/tasks.py

@@ -0,0 +1,23 @@
+"""Background task definitions for the 'machine' app."""
+
+import structlog
+from opentelemetry import trace
+
+from common.settings import get_global_setting
+from InvenTree.tasks import ScheduledTask, scheduled_task
+from machine import registry
+
+tracer = trace.get_tracer(__name__)
+logger = structlog.get_logger('inventree')
+
+
+@tracer.start_as_current_span('ping_machines')
+@scheduled_task(ScheduledTask.MINUTES, 5)
+def ping_machines():
+    """Periodically ping all configured machines to check if they are online."""
+    if not get_global_setting('MACHINE_PING_ENABLED', True):
+        return
+
+    for driver in registry.get_drivers():
+        logger.debug("Pinging machines for driver '%s'", driver.SLUG)
+        driver.ping_machines()

src/backend/InvenTree/machine/tests.py

@@ -139,6 +139,27 @@ class TestDriverMachineInterface(TestMachineRegistryMixin, TestCase):
         # Test machine restart hook
         registry.restart_machine(machine.machine)
 
+        # Assert properties have been set and correctly initialized with default values
+        self.assertDictEqual(
+            machine.machine.properties_dict,
+            {
+                'Model': {
+                    'key': 'Model',
+                    'value': 'Sample Printer 3000',
+                    'type': 'str',
+                    'group': '',
+                    'max_progress': None,
+                },
+                'Battery': {
+                    'key': 'Battery',
+                    'value': 42,
+                    'type': 'progress',
+                    'group': '',
+                    'max_progress': 100,
+                },
+            },
+        )
+
         # Test remove machine
         self.assertEqual(len(registry.get_machines()), 2)
         registry.remove_machine(machine)

src/backend/InvenTree/plugin/machine/__init__.py

@@ -1,9 +1,16 @@
-from machine import BaseDriver, BaseMachineType, MachineStatus, registry
+from machine import (
+    BaseDriver,
+    BaseMachineType,
+    MachineProperty,
+    MachineStatus,
+    registry,
+)
 from machine.registry import call_machine_function
 
 __all__ = [
     'BaseDriver',
     'BaseMachineType',
+    'MachineProperty',
     'MachineStatus',
     'call_machine_function',
     'registry',

src/backend/InvenTree/plugin/samples/machines/sample_printer.py

@@ -31,6 +31,10 @@ class SamplePrinterDriver(LabelPrinterBaseDriver):
 
     def init_machine(self, machine: BaseMachineType) -> None:
         """Machine initialization hook."""
+        machine.set_properties([
+            {'key': 'Model', 'value': 'Sample Printer 3000'},
+            {'key': 'Battery', 'value': 42, 'type': 'progress'},
+        ])
 
     def print_label(
         self,

src/frontend/src/pages/Index/Settings/AdminCenter/MachineManagementPanel.tsx

@@ -17,6 +17,7 @@ import { ApiEndpoints } from '@lib/enums/ApiEndpoints';
 import { apiUrl } from '@lib/functions/Api';
 import { api } from '../../../../App';
 import { StylishText } from '../../../../components/items/StylishText';
+import { GlobalSettingList } from '../../../../components/settings/SettingList';
 import { MachineListTable } from '../../../../tables/machine/MachineListTable';
 import {
   MachineDriverTable,
@@ -116,6 +117,14 @@ export default function MachineManagementPanel() {
           </Stack>
         </Accordion.Panel>
       </Accordion.Item>
+      <Accordion.Item value='settings'>
+        <Accordion.Control>
+          <StylishText size='lg'>{t`Machine Settings`}</StylishText>
+        </Accordion.Control>
+        <Accordion.Panel>
+          <GlobalSettingList keys={['MACHINE_PING_ENABLED']} />
+        </Accordion.Panel>
+      </Accordion.Item>
     </Accordion>
   );
 }

src/frontend/src/tables/machine/MachineListTable.tsx

@@ -4,14 +4,16 @@ import {
   Alert,
   Badge,
   Box,
-  Card,
   Code,
   Flex,
   Group,
   Indicator,
   List,
   LoadingOverlay,
+  Paper,
+  Progress,
   Stack,
+  Table,
   Text
 } from '@mantine/core';
 import { notifications } from '@mantine/notifications';
@@ -24,7 +26,7 @@ import { AddItemButton } from '@lib/components/AddItemButton';
 import { YesNoButton } from '@lib/components/YesNoButton';
 import { ApiEndpoints } from '@lib/enums/ApiEndpoints';
 import { apiUrl } from '@lib/functions/Api';
-import { RowDeleteAction, RowEditAction } from '@lib/index';
+import { RowDeleteAction, RowEditAction, formatDecimal } from '@lib/index';
 import type { RowAction, TableColumn } from '@lib/types/Tables';
 import type { InvenTreeTableProps } from '@lib/types/Tables';
 import { Trans } from '@lingui/react/macro';
@@ -70,6 +72,13 @@ interface MachineI {
   machine_errors: string[];
   is_driver_available: boolean;
   restart_required: boolean;
+  properties: {
+    key: string;
+    value: string;
+    group: string;
+    type: 'str' | 'progress' | 'bool' | 'int' | 'float';
+    max_progress: number;
+  }[];
 }
 
 function MachineStatusIndicator({ machine }: Readonly<{ machine: MachineI }>) {
@@ -183,10 +192,11 @@ function MachineDrawer({
   const {
     data: machine,
     refetch,
-    isFetching: isMachineFetching
+    isLoading: isMachineFetching
   } = useQuery<MachineI>({
     enabled: true,
     queryKey: ['machine-detail', machinePk],
+    refetchInterval: 5 * 1000,
     queryFn: () =>
       api
         .get(apiUrl(ApiEndpoints.machine_list, machinePk))
@@ -251,6 +261,19 @@ function MachineDrawer({
     }
   });
 
+  const groupedProperties = useMemo(() => {
+    if (!machine?.properties) return [];
+    const groups: string[] = []; // track ordered list of groups
+    const groupMap: { [key: string]: typeof machine.properties } = {};
+    for (const prop of machine.properties) {
+      if (!groups.includes(prop.group)) groups.push(prop.group);
+      if (!groupMap[prop.group]) groupMap[prop.group] = [];
+      groupMap[prop.group].push(prop);
+    }
+
+    return groups.map((g) => ({ group: g, properties: groupMap[g] }));
+  }, [machine?.properties]);
+
   return (
     <>
       <Stack gap='xs'>
@@ -305,17 +328,22 @@ function MachineDrawer({
 
         <Accordion
           multiple
-          defaultValue={['machine-info', 'machine-settings', 'driver-settings']}
+          defaultValue={[
+            'machine-info',
+            'machine-properties',
+            'machine-settings',
+            'driver-settings'
+          ]}
         >
           <Accordion.Item
             key={`machine-info-${machinePk}`}
             value='machine-info'
           >
             <Accordion.Control>
-              <StylishText size='lg'>{t`Machine Information`}</StylishText>
+              <StylishText size='lg'>{t`General`}</StylishText>
             </Accordion.Control>
             <Accordion.Panel>
-              <Card withBorder>
+              <Paper withBorder p='md'>
                 <Stack gap='md'>
                   <Stack pos='relative' gap='xs'>
                     <LoadingOverlay
@@ -363,7 +391,7 @@ function MachineDrawer({
                         ) : (
                           StatusRenderer({
                             status: `${machine?.status || -1}`,
-                            type: `MachineStatus__${machine?.status_model}` as any
+                            type: `${machine?.status_model}` as any
                           })
                         )}
                         <Text fz='sm'>{machine?.status_text}</Text>
@@ -392,7 +420,77 @@ function MachineDrawer({
                     </Group>
                   </Stack>
                 </Stack>
-              </Card>
+              </Paper>
+            </Accordion.Panel>
+          </Accordion.Item>
+          <Accordion.Item
+            key={`machine-properties-${machinePk}`}
+            value='machine-properties'
+          >
+            <Accordion.Control>
+              <StylishText size='lg'>{t`Properties`}</StylishText>
+            </Accordion.Control>
+            <Accordion.Panel>
+              <Paper withBorder p='md'>
+                <Stack gap='sm'>
+                  {groupedProperties.map(({ group, properties }) => (
+                    <Stack key={group} gap={0}>
+                      {group && (
+                        <Text fz='sm' fw={700} mb={2}>
+                          {group}
+                        </Text>
+                      )}
+                      <Table
+                        variant='vertical'
+                        withTableBorder
+                        verticalSpacing={4}
+                      >
+                        <Table.Tbody>
+                          {properties.map((prop) => (
+                            <Table.Tr key={prop.key}>
+                              <Table.Th w={250}>{prop.key}</Table.Th>
+                              <Table.Td>
+                                {prop.type === 'bool' ? (
+                                  <YesNoButton
+                                    value={
+                                      `${prop.value}`.toLowerCase() === 'true'
+                                    }
+                                  />
+                                ) : prop.type === 'progress' ? (
+                                  <Group>
+                                    <Progress
+                                      value={
+                                        (Number.parseInt(prop.value) /
+                                          prop.max_progress) *
+                                        100
+                                      }
+                                      flex={1}
+                                    />
+                                    <Text>
+                                      {prop.value} / {prop.max_progress}
+                                    </Text>
+                                  </Group>
+                                ) : prop.type === 'int' ? (
+                                  <Text size='sm'>{prop.value}</Text>
+                                ) : prop.type === 'float' ? (
+                                  <Text size='sm'>
+                                    {formatDecimal(
+                                      Number.parseFloat(prop.value),
+                                      { digits: 4 }
+                                    )}
+                                  </Text>
+                                ) : (
+                                  <Text size='sm'>{prop.value}</Text>
+                                )}
+                              </Table.Td>
+                            </Table.Tr>
+                          ))}
+                        </Table.Tbody>
+                      </Table>
+                    </Stack>
+                  ))}
+                </Stack>
+              </Paper>
             </Accordion.Panel>
           </Accordion.Item>
           {machine?.is_driver_available && (
@@ -404,13 +502,13 @@ function MachineDrawer({
                 <StylishText size='lg'>{t`Machine Settings`}</StylishText>
               </Accordion.Control>
               <Accordion.Panel>
-                <Card withBorder>
+                <Paper withBorder p='xs'>
                   <MachineSettingList
                     machinePk={machinePk}
                     configType='M'
                     onChange={refreshAll}
                   />
-                </Card>
+                </Paper>
               </Accordion.Panel>
             </Accordion.Item>
           )}
@@ -423,13 +521,13 @@ function MachineDrawer({
                 <StylishText size='lg'>{t`Driver Settings`}</StylishText>
               </Accordion.Control>
               <Accordion.Panel>
-                <Card withBorder>
+                <Paper withBorder p='xs'>
                   <MachineSettingList
                     machinePk={machinePk}
                     configType='D'
                     onChange={refreshAll}
                   />
-                </Card>
+                </Paper>
               </Accordion.Panel>
             </Accordion.Item>
           )}
@@ -518,6 +616,15 @@ export function MachineListTable({
             return renderer(record);
           }
         }
+      },
+      {
+        accessor: 'status_text',
+        sortable: false
+      },
+      {
+        accessor: 'machine_errors',
+        sortable: false,
+        render: (record) => record.machine_errors.join(', ')
       }
     ],
     [machineTypes]