v2.0.5

Bug fixes

• Fixes an issue where multiple producers would emit stats of other producers causing the same stats to be published several times (as many times as a number of producers). This could cause invalid reporting for multi-kafka setups.
• Fixes a bug where emitted statistics would contain their first value as the first delta value for first stats emitted.
• Fixes a bug where decorated statistics would include a delta for a root field with non-numeric values.

Changes and features

• Introduces support for error callbacks instrumentation notifications with error.emitted monitor emitted key for tracking background errors that would occur on the producer (disconnects, etc).
• Removes the :producer key from statistics.emitted and replaces it with :producer_id not to inject whole producer into the payload
• Removes the :producer key from message.acknowledged and replaces it with :producer_id not to inject whole producer into the payload
• Cleanup and refactor of callbacks support to simplify the API and make it work with Rdkafka way of things.
• Introduces a callbacks manager concept that will also be within in Karafka 2.0 for both statistics and errors tracking per client.
• Sets default Kafka client.id to waterdrop when not set.
• Updates specs to always emit statistics for better test coverage.
• Adds statistics and errors integration specs running against Kafka.
• Replaces direct RSpec.describe reference with auto-discovery
• Patches rdkafka to provide functionalities that are needed for granular callback support.