Add validation for scheduled tasks defined by a plugin

InvenTree/common/models.py

@@ -978,6 +978,13 @@ class InvenTreeSetting(BaseInvenTreeSetting):
             'validator': bool,
             'requires_restart': True,
         },
+        'ENABLE_PLUGINS_SCHEDULE': {
+            'name': _('Enable schedule integration'),
+            'description': _('Enable plugins to run scheduled tasks'),
+            'default': False,
+            'validator': bool,
+            'requires_restart': True,
+        }
     }
 
     class Meta:

InvenTree/plugin/builtin/integration/mixins.py

@@ -69,8 +69,12 @@ class ScheduleMixin:
             'repeats': 5,                           # Number of repeats (leave blank for 'forever')
         }
     }
+
+    Note: 'schedule' parameter must be one of ['I', 'H', 'D', 'W', 'M', 'Q', 'Y']
     """
 
+    ALLOWABLE_SCHEDULE_TYPES = ['I', 'H', 'D', 'W', 'M', 'Q', 'Y']
+
     SCHEDULED_TASKS = {}
 
     class MixinMeta:
@@ -92,11 +96,25 @@ class ScheduleMixin:
         Check that the provided scheduled tasks are valid
         """
 
-        if not self.has_scheduled_tasks():
-            raise ValueError(f"SCHEDULED_TASKS not defined for plugin '{__class__}'")
+        if not self.has_scheduled_tasks:
+            raise ValueError(f"SCHEDULED_TASKS not defined")
 
         for key, task in self.scheduled_tasks.items():
-            print(key, task)
+            
+            if 'func' not in task:
+                raise ValueError(f"Task '{key}' is missing 'func' parameter")
+            
+            if 'schedule' not in task:
+                raise ValueError(f"Task '{key}' is missing 'schedule' parameter")
+            
+            schedule = task['schedule'].upper().strip()
+
+            if schedule not in self.ALLOWABLE_SCHEDULE_TYPES:
+                raise ValueError(f"Task '{key}': Schedule '{schedule}' is not a valid option")
+
+            # If 'minutes' is selected, it must be provided!
+            if schedule == 'I' and 'minutes' not in task:
+                raise ValueError(f"Task '{key}' is missing 'minutes' parameter")
 
 class UrlsMixin:
     """

InvenTree/plugin/integration.py

@@ -94,6 +94,10 @@ class IntegrationPluginBase(MixinBase, plugin.InvenTreePlugin):
     def slug(self):
         return self.plugin_slug()
 
+    @property
+    def name(self):
+        return self.plugin_name()
+
     @property
     def human_name(self):
         """human readable name for labels etc."""

InvenTree/plugin/mixins/__init__.py

@@ -1,9 +1,13 @@
-"""utility class to enable simpler imports"""
-from ..builtin.integration.mixins import AppMixin, SettingsMixin, UrlsMixin, NavigationMixin
+"""
+Utility class to enable simpler imports
+"""
+
+from ..builtin.integration.mixins import AppMixin, SettingsMixin, ScheduleMixin, UrlsMixin, NavigationMixin
 
 __all__ = [
     'AppMixin',
     'NavigationMixin',
+    'ScheduleMixin',
     'SettingsMixin',
     'UrlsMixin',
 ]

InvenTree/plugin/samples/integration/scheduled_tasks.py

@@ -6,6 +6,15 @@ from plugin import IntegrationPluginBase
 from plugin.mixins import ScheduleMixin
 
 
+# Define some simple tasks to perform
+def print_hello():
+    print("Hello")
+
+
+def print_world():
+    print("World")
+
+
 class ScheduledTaskPlugin(ScheduleMixin, IntegrationPluginBase):
     """
     A sample plugin which provides support for scheduled tasks
@@ -13,4 +22,16 @@ class ScheduledTaskPlugin(ScheduleMixin, IntegrationPluginBase):
 
     PLUGIN_NAME = "ScheduledTasksPlugin"
     PLUGIN_SLUG = "schedule"
-    PLUGIN_TITLE = "A plugin which provides scheduled task support"
+    PLUGIN_TITLE = "Scheduled Tasks"
+
+    SCHEDULED_TASKS = {
+        'hello': {
+            'func': 'plugin.builtin.integration.mixins.ScheduleMixin.print_hello',
+            'schedule': 'I',
+            'minutes': 5,
+        },
+        'world': {
+            'func': 'plugin.builtin.integration.mixins.ScheduleMixin.print_world',
+            'schedule': 'H',
+        }
+    }

InvenTree/templates/InvenTree/settings/plugin.html

@@ -19,6 +19,7 @@
 <div class='table-responsive'>
 <table class='table table-striped table-condensed'>
     <tbody>
+        {% include "InvenTree/settings/setting.html" with key="ENABLE_PLUGINS_SCHEDULE" icon="fa-calendar-alt" %}
         {% include "InvenTree/settings/setting.html" with key="ENABLE_PLUGINS_URL" icon="fa-link" %}
         {% include "InvenTree/settings/setting.html" with key="ENABLE_PLUGINS_NAVIGATION" icon="fa-sitemap" %}
         {% include "InvenTree/settings/setting.html" with key="ENABLE_PLUGINS_APP" icon="fa-rocket" %}
@@ -28,7 +29,7 @@
 
 <div class='panel-heading'>
     <div class='d-flex flex-wrap'>
-        <h4>{% trans "Plugin list" %}</h4>
+        <h4>{% trans "Plugins" %}</h4>
         {% include "spacer.html" %}
         <div class='btn-group' role='group'>
             {% url 'admin:plugin_pluginconfig_changelist' as url %}