streams

package

v1.5.0 Latest Latest Go to latest Published: Aug 27, 2019 License: MIT Imports: 6 Imported by: 0

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Repository

github.com/gocardless/stolon-pgbouncer

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Documentation ¶

Index ¶

func DedupeFilter(logger kitlog.Logger, in <-chan *mvccpb.KeyValue) <-chan *mvccpb.KeyValue
func RetryFold(logger kitlog.Logger, in <-chan *mvccpb.KeyValue, opt RetryFoldOptions, ...) error
func RevisionFilter(logger kitlog.Logger, in <-chan *mvccpb.KeyValue) <-chan *mvccpb.KeyValue
func Tap(in <-chan *mvccpb.KeyValue, op func(*mvccpb.KeyValue)) <-chan *mvccpb.KeyValue
type Filter
type Operation
type RetryFoldOptions

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func DedupeFilter ¶

func DedupeFilter(logger kitlog.Logger, in <-chan *mvccpb.KeyValue) <-chan *mvccpb.KeyValue

DedupeFilter creates a new channel from `in` that emits events provided the value is changed from what was previously seen for that key.

func RetryFold ¶

func RetryFold(logger kitlog.Logger, in <-chan *mvccpb.KeyValue, opt RetryFoldOptions, op Operation) error

RetryFold consumes all kvs from the `in` channel and attempts to run an operation on them, retrying that operation ad-infinitum in case of errors.

func RevisionFilter ¶

func RevisionFilter(logger kitlog.Logger, in <-chan *mvccpb.KeyValue) <-chan *mvccpb.KeyValue

RevisionFilter creates a new channel from `in` that emits every received event, provided it preserves ordering of kv ModRevision values on a per-key basis.

func Tap ¶

func Tap(in <-chan *mvccpb.KeyValue, op func(*mvccpb.KeyValue)) <-chan *mvccpb.KeyValue

Tap intercepts the given channel and passes values into an operation function.

Types ¶

type Filter ¶

type Filter func(kitlog.Logger, <-chan *mvccpb.KeyValue) <-chan *mvccpb.KeyValue

type Operation ¶

type Operation func(context.Context, *mvccpb.KeyValue) error

type RetryFoldOptions ¶

type RetryFoldOptions struct {
	Ctx      context.Context
	Interval time.Duration
	Timeout  time.Duration
}

RetryFoldOptions provides configuration to the RetryFold function

Source Files ¶

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