Add Trigger Manager app (#590)

docs/webapp/applications/apps_overview.md

@@ -21,6 +21,7 @@ ClearML provides the following applications:
 * **Nvidia Clara** - Train models using Nvidia’s Clara framework
 * [**Project Dashboard**](apps_dashboard.md) - High-level project monitoring with Slack alerts
 * [**Task Scheduler**](apps_task_scheduler.md) - Schedule tasks for one-shot and/or periodic execution at specified times (available under ClearML Enterprise Plan)
+* [**Trigger Manager**](apps_trigger_manager) - Define tasks to be run when predefined events occur (available under ClearML Enterprise Plan)
 
 ## App Pages Layout
 Each application’s page is split into two sections:

docs/webapp/applications/apps_trigger_manager.md

@@ -0,0 +1,57 @@
+---
+title: Trigger Manager
+--- 
+
+:::important Enterprise Feature
+The Trigger Manager application is available under the ClearML Enterprise plan
+:::
+
+ClearML's Trigger Manager Application lets you define tasks to be run when predefined events occur. The Trigger Manager 
+is useful for automating your workflows: trigger training a model whenever a new dataset is tagged with a specific tag, 
+or running a pipeline when a new model is published.
+
+Each trigger is configured to run a ClearML task when its specifications are met. 
+
+The events which can activate a trigger include:
+* Status change of an object (task, dataset, or model)
+* Tagging of an object
+* For task triggers, crossing a specified metric threshold 
+
+The app monitors your workspace for trigger events and will launch copies of the specified task when the trigger is activated.
+
+## Trigger Manager Instance Configuration 
+
+* **Name** - Name for the app instance. This will appear in the instance list
+* **Triggers** - Events whose occurrence will cause a task to be executed
+  * Task ID - ID of a ClearML task to clone and enqueue 
+  for execution when the trigger is activated. 
+  * Target Project - The project where the task will be cloned to
+  * Queue - The ClearML Queue to which cloned tasks are enqueued (make sure an agent is assigned to that queue)
+  * Override Task Hyperparameters - Override parameters in the cloned task. Input the original task's configuration 
+  parameter name (including section name e.g. Args/lr). Use UNIX shell-like syntax (splits on whitespace)
+  * Trigger Type - Triggers can be activated by model, dataset, and/or task activity. Choose which object type to monitor.
+    * Object selection criteria: 
+      * Match Project - Monitor objects in projects that match this name only
+      * Match Name - Monitor objects that match this name. Supports both string and Python regex match
+      * Trigger on Any Tags - Trigger if the object is tagged with *ANY* of the specified tags (comma separated list)
+      * Trigger on All Tags - Trigger if the object is tagged with *ALL* of the specified tags (comma separated list)
+    * Trigger events for Datasets and Models:
+      * Trigger on Publish - Activate trigger when a Dataset/Model is published
+      * Trigger on Archive - Activate trigger when a Dataset/Model is archived
+    * Trigger events for Tasks:
+      * Trigger on Status Change - Activate trigger when a task's status changes to the selected state.
+      * Trigger on scalar - Activate trigger when a task's specific metric crosses a threshold: 
+        * Metric - Title of metric
+        * Variant - Metric's variant (series) 
+        * Condition - Activate trigger if the value goes over/under the specified threshold 
+        * Threshold - The metric threshold to monitor
+  * Add item - Add another trigger 
+* **Polling frequency** - Time period in minutes at which the workspace is polled for trigger events 
+
+
+## Dashboard 
+
+The Trigger Manager app instance's dashboard displays its console log. The log  shows the instance’s activity: periodic 
+polling, and events triggered
+
+![Trigger dashboard](../../img/apps_trigger_manager_dashboard.png)

sidebars.js

@@ -95,7 +95,8 @@ module.exports = {
                     'webapp/applications/apps_gcp_autoscaler',
                     'webapp/applications/apps_hpo',
                     'webapp/applications/apps_dashboard',
-                    'webapp/applications/apps_task_scheduler'
+                    'webapp/applications/apps_task_scheduler',
+                    'webapp/applications/apps_trigger_manager'
                 ]
 
             },