You can perform various search operations on messages stored within a topic.
The icons on the screen have the following functions:
- Message filter settings
- Delete message
- Download list
- Start/stop message streaming
Message Streaming
When you click the start streaming button , messages produced for that topic are displayed in the bottom list in real time.
View message details
By clicking on one record in the displayed message list, you can view the message content in detail. You can quickly move to the previous and next messages using the links at the bottom.
Message filter
Column filter
You can filter messages using column filters. Click the vertical menu at the right of the column header: and choose Filter.
Choose a column and operator from the lists provided, and enter a value. This list of messages is filtered immediately.
You can search messages stored in a topic under various conditions.
Search box. Only messages containing the search string in the key or value are returned. Applicable only when the key or value format is a string.
Basic filter
- Partitions. Partition to get messages from.
- Maximum number of messages (Get message limit). Maximum number of messages displayed in the bottom table.
- Message limit. Maximum number of messages retrieved at one time.
- Key Format. Message key format.
- Value Format. Message value format.
Detailed filter
To access Detail filters, click .
- Offset settings
- Earliest Offset. The messages are retrieved in order, starting with the oldest.
- Latest Forward Offset.
- Latest Backward Offset
- Timestamp. You can retrieve messages after a certain point in time.
Delete message
You can delete messages from a topic. Deletion invalidates messages before a certain offset. It is not possible to delete messages in the middle of a topic or after a certain offset.
To delete a message, you can register the standard offset you want to delete for each partition and delete it with the delete button .
Clear topic
You can clear a topic by registering and deleting message deletions for all partitions one by one, or by clearing the topic using the Empty Topic button at the bottom of the topic settings page: .
Download messages
Messages brought to the list through streaming or filter search can be downloaded using the list download (Export) button and choosing a file format. Two formats are supported for downloaded files: CSV and JSON.
The file is downloaded to your local Downloads folder. Its name reflects the cluster and topic from which it came, and includes a date stamp.