EventBridge:Analysis of the events in the system event bus

Before you start

Limits

You can query only event schemas in the OpenAPI 3.0 format.

Enable the event analysis feature

1. Log on to the EventBridge console. In the left-side navigation pane, click Event Buses.
2. In the top navigation bar, select the region.
3. On the Event Buses page, find the default event bus with the System Event Bus tag and click Details in the Actions column.Event Bus
4. In the Basic Information section of the Event Bus Overview page, turn on Event Analysis.
5. In the Note message, click OK. On the EventBridge Event Analysis Invitational Preview Application page, enter application information for the invitational preview and click Submit.

Query and analyze events

1. Log on to the EventBridge console. In the left-side navigation pane, choose Event Center > Event Analysis.
2. In the top navigation bar, select the region.
3. On the Event Analysis page, configure the parameters that are described in the following table and click Query.
   

   Parameter	Required	Description
   Event Bus	Yes	The name of the event bus whose events you want to query.
   Schema	Yes	The schema of the event type to be queried. For more information about the types of Alibaba Cloud service events, see Alibaba Cloud service event sources.
   Key-value Match	No	The key-value pair that is used to match events. You can specify one or more key-value pairs. Conditional expressions support the following operators: =: If you use = as the operator, you must specify the value of the field. In this case, all events that meet the key = value condition are queried. !=: If you use != as the operator, you must specify the value of the field. In this case, all events that meet the key != value condition are queried. exists: All events that meet the key exists condition are queried. does-not-exist: All events that meet the key does-not-exist condition are queried. Note You can also select AND or OR to the right of the Key-value Match parameter to specify the relationship between multiple key-value pairs.
   Aggregate Function	No	The aggregate function that is used for data visualization. If you want to view the query results in charts, you must set the Aggregate Function parameter. You can select one or more aggregate functions. An aggregate function corresponds to a line chart.
   Grouped By	No	The name of the field based on which events are grouped. If you want to group the queried events, enter a field that specifies an event property. You can enter one or more fields.
   Ordered By	No	The name of the field based on which events are sorted. Events can be sorted in ascending or descending order based on the aggregate functions specified by the Aggregate Function parameter. You can enter one or more fields.
   Time Range	No	The time range to query the events.
   Number of Events	No	The maximum number of events to be queried.

   After the preceding steps are performed, you can view the query results on the Aggregate Function and Table tabs of the Event Analysis page.

View the query results