Module nakadion::consumer

Kit for creating a consumer for a subscription

Start here if you want to consume a stream. You will need a BatchHandlerFactory to consume a stream.

Re-exports

pub use crate::instrumentation::Instrumentation;

pub use crate::instrumentation::MetricsDetailLevel;

Structs

AbortConnectOnAuthError	If true abort the consumer when an auth error occurs while connecting to a stream.
AbortConnectOnSubscriptionNotFound	If true abort the consumer when a subscription does not exist when connection to a stream.
BatchFlushTimeoutSecs	Maximum time in seconds to wait for the flushing of each chunk (per partition).
BatchLimit	Maximum number of Events in each chunk (and therefore per partition) of the stream.
BatchTimespanSecs	Useful for batching events based on their received_at timestamp.
Builder	Creates a Consumer
CommitAttemptTimeoutMillis	The timeout for a request made to Nakadi to commit cursors.
CommitRetryDelayMillis	The delay between failed attempts to commit cursors.
ConnectStreamRetryMaxDelaySecs	The maximum retry delay between failed attempts to connect to a stream.
ConnectStreamTimeoutSecs	The timeout for a request made to Nakadi to connect to a stream.
Consumer	Consumes an event stream
ConsumerError	Always leads to Nakadion shutting down
ConsumerHandle	A handle for controlling a Consumer from externally.
Consuming	A Future that completes once the consumer stopped events consumption
ConsumptionOutcome	Returned once a Consumer has stopped. It contains the original consumer and if the Consumer was stopped for other reasons than the stream ending a ConsumerError.
DevNullLogger	Does no logging at all
Error	An error for cases where further investigation is not necessary
HandlerInactivityTimeoutSecs	The time after which a handler is considered inactive.
LogLogger	A logger based on log
MaxConnectAttempts	The maximum number of attempts to be made to connect to a stream.
MaxUncommittedEvents	The maximum number of uncommitted events that Nakadi will stream before pausing the stream.
Metrix	Instrumentation with Metrix
MetrixConfig
PartitionInactivityTimeoutSecs	The time after which a partition is considered inactive.
SlogLogger	A logger based on slog
StdErrLogger	Logs to stderr
StdOutLogger	Logs to stdout
StreamLimit	Maximum number of Events in this stream (over all partitions being streamed in this connection).
StreamParameters	Parameters for starting a new stream on a subscription
StreamTimeoutSecs	Maximum time in seconds a stream will live before connection is closed by the server.
SubscriptionId	Id of a subscription
TickIntervalMillis	The internal tick interval.
WarnStreamStalledSecs	Emits a warning when no lines were received from Nakadi.

Enums

CommitStrategy	Defines how to commit cursors
ConsumerErrorKind
DispatchMode	Defines how to dispatch batches to handlers.
StreamDeadPolicy	Specifies when a stream is considered dead and has to be aborted.

Traits

LoggingAdapter

An adapter for pluggable logging.