Interface ObservationCollector

public interface ObservationCollector

API to observe common message operations.

This interface is considered an SPI and is susceptible to change at any time.

See Also:

• MicrometerObservationCollectorBuilder

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	ObservationCollector.ConnectionInfo	Information on a connection.

Method Summary

Modifier and Type	Method	Description
<T> T	publish(String exchange, String routingKey, Message message, ObservationCollector.ConnectionInfo connectionInfo, Function<Message,T> publishCall)	Observe the publishing of a message.
Consumer.MessageHandler	subscribe(String queue, Consumer.MessageHandler handler)	Decorate a Consumer.MessageHandler to observe the delivery of messages.

Method Details

publish

<T> T publish(String exchange,
 String routingKey,
 Message message,
 ObservationCollector.ConnectionInfo connectionInfo,
 Function<Message,T> publishCall)

Observe the publishing of a message.

Implementations must perform the publish call with the provided argument and make their observations "around" it.

Type Parameters:

T - type of the context returned by the publish call

Parameters:

exchange - the exchange the message is published to

routingKey - the routing key

message - the published message

connectionInfo - information on the connection

publishCall - the actual publish call

Returns:

some context returned by the publish call

subscribe

Consumer.MessageHandler subscribe(String queue,
 Consumer.MessageHandler handler)

Decorate a Consumer.MessageHandler to observe the delivery of messages.

Parameters:

queue - the queue the consumer subscribes to

handler - the application message delivery handler

Returns:

the decorated handler