You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
298 lines
8.7 KiB
298 lines
8.7 KiB
package types
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/tendermint/tendermint/abci/types"
|
|
"github.com/tendermint/tendermint/libs/log"
|
|
tmpubsub "github.com/tendermint/tendermint/libs/pubsub"
|
|
"github.com/tendermint/tendermint/libs/service"
|
|
)
|
|
|
|
const defaultCapacity = 0
|
|
|
|
type EventBusSubscriber interface {
|
|
Subscribe(ctx context.Context, subscriber string, query tmpubsub.Query, outCapacity ...int) (Subscription, error)
|
|
Unsubscribe(ctx context.Context, subscriber string, query tmpubsub.Query) error
|
|
UnsubscribeAll(ctx context.Context, subscriber string) error
|
|
|
|
NumClients() int
|
|
NumClientSubscriptions(clientID string) int
|
|
}
|
|
|
|
type Subscription interface {
|
|
Out() <-chan tmpubsub.Message
|
|
Cancelled() <-chan struct{}
|
|
Err() error
|
|
}
|
|
|
|
// EventBus is a common bus for all events going through the system. All calls
|
|
// are proxied to underlying pubsub server. All events must be published using
|
|
// EventBus to ensure correct data types.
|
|
type EventBus struct {
|
|
service.BaseService
|
|
pubsub *tmpubsub.Server
|
|
}
|
|
|
|
// NewEventBus returns a new event bus.
|
|
func NewEventBus() *EventBus {
|
|
return NewEventBusWithBufferCapacity(defaultCapacity)
|
|
}
|
|
|
|
// NewEventBusWithBufferCapacity returns a new event bus with the given buffer capacity.
|
|
func NewEventBusWithBufferCapacity(cap int) *EventBus {
|
|
// capacity could be exposed later if needed
|
|
pubsub := tmpubsub.NewServer(tmpubsub.BufferCapacity(cap))
|
|
b := &EventBus{pubsub: pubsub}
|
|
b.BaseService = *service.NewBaseService(nil, "EventBus", b)
|
|
return b
|
|
}
|
|
|
|
func (b *EventBus) SetLogger(l log.Logger) {
|
|
b.BaseService.SetLogger(l)
|
|
b.pubsub.SetLogger(l.With("module", "pubsub"))
|
|
}
|
|
|
|
func (b *EventBus) OnStart() error {
|
|
return b.pubsub.Start()
|
|
}
|
|
|
|
func (b *EventBus) OnStop() {
|
|
b.pubsub.Stop()
|
|
}
|
|
|
|
func (b *EventBus) NumClients() int {
|
|
return b.pubsub.NumClients()
|
|
}
|
|
|
|
func (b *EventBus) NumClientSubscriptions(clientID string) int {
|
|
return b.pubsub.NumClientSubscriptions(clientID)
|
|
}
|
|
|
|
func (b *EventBus) Subscribe(
|
|
ctx context.Context,
|
|
subscriber string,
|
|
query tmpubsub.Query,
|
|
outCapacity ...int,
|
|
) (Subscription, error) {
|
|
return b.pubsub.Subscribe(ctx, subscriber, query, outCapacity...)
|
|
}
|
|
|
|
// This method can be used for a local consensus explorer and synchronous
|
|
// testing. Do not use for for public facing / untrusted subscriptions!
|
|
func (b *EventBus) SubscribeUnbuffered(
|
|
ctx context.Context,
|
|
subscriber string,
|
|
query tmpubsub.Query,
|
|
) (Subscription, error) {
|
|
return b.pubsub.SubscribeUnbuffered(ctx, subscriber, query)
|
|
}
|
|
|
|
func (b *EventBus) Unsubscribe(ctx context.Context, subscriber string, query tmpubsub.Query) error {
|
|
return b.pubsub.Unsubscribe(ctx, subscriber, query)
|
|
}
|
|
|
|
func (b *EventBus) UnsubscribeAll(ctx context.Context, subscriber string) error {
|
|
return b.pubsub.UnsubscribeAll(ctx, subscriber)
|
|
}
|
|
|
|
func (b *EventBus) Publish(eventType string, eventData TMEventData) error {
|
|
// no explicit deadline for publishing events
|
|
ctx := context.Background()
|
|
return b.pubsub.PublishWithEvents(ctx, eventData, map[string][]string{EventTypeKey: {eventType}})
|
|
}
|
|
|
|
// validateAndStringifyEvents takes a slice of event objects and creates a
|
|
// map of stringified events where each key is composed of the event
|
|
// type and each of the event's attributes keys in the form of
|
|
// "{event.Type}.{attribute.Key}" and the value is each attribute's value.
|
|
func (b *EventBus) validateAndStringifyEvents(events []types.Event, logger log.Logger) map[string][]string {
|
|
result := make(map[string][]string)
|
|
for _, event := range events {
|
|
if len(event.Type) == 0 {
|
|
logger.Debug("Got an event with an empty type (skipping)", "event", event)
|
|
continue
|
|
}
|
|
|
|
for _, attr := range event.Attributes {
|
|
if len(attr.Key) == 0 {
|
|
logger.Debug("Got an event attribute with an empty key(skipping)", "event", event)
|
|
continue
|
|
}
|
|
|
|
compositeTag := fmt.Sprintf("%s.%s", event.Type, string(attr.Key))
|
|
result[compositeTag] = append(result[compositeTag], string(attr.Value))
|
|
}
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
func (b *EventBus) PublishEventNewBlock(data EventDataNewBlock) error {
|
|
// no explicit deadline for publishing events
|
|
ctx := context.Background()
|
|
|
|
resultEvents := append(data.ResultBeginBlock.Events, data.ResultEndBlock.Events...)
|
|
events := b.validateAndStringifyEvents(resultEvents, b.Logger.With("block", data.Block.StringShort()))
|
|
|
|
// add predefined new block event
|
|
events[EventTypeKey] = append(events[EventTypeKey], EventNewBlock)
|
|
|
|
return b.pubsub.PublishWithEvents(ctx, data, events)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventNewBlockHeader(data EventDataNewBlockHeader) error {
|
|
// no explicit deadline for publishing events
|
|
ctx := context.Background()
|
|
|
|
resultTags := append(data.ResultBeginBlock.Events, data.ResultEndBlock.Events...)
|
|
// TODO: Create StringShort method for Header and use it in logger.
|
|
events := b.validateAndStringifyEvents(resultTags, b.Logger.With("header", data.Header))
|
|
|
|
// add predefined new block header event
|
|
events[EventTypeKey] = append(events[EventTypeKey], EventNewBlockHeader)
|
|
|
|
return b.pubsub.PublishWithEvents(ctx, data, events)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventVote(data EventDataVote) error {
|
|
return b.Publish(EventVote, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventValidBlock(data EventDataRoundState) error {
|
|
return b.Publish(EventValidBlock, data)
|
|
}
|
|
|
|
// PublishEventTx publishes tx event with events from Result. Note it will add
|
|
// predefined keys (EventTypeKey, TxHashKey). Existing events with the same keys
|
|
// will be overwritten.
|
|
func (b *EventBus) PublishEventTx(data EventDataTx) error {
|
|
// no explicit deadline for publishing events
|
|
ctx := context.Background()
|
|
|
|
events := b.validateAndStringifyEvents(data.Result.Events, b.Logger.With("tx", data.Tx))
|
|
|
|
// add predefined compositeKeys
|
|
events[EventTypeKey] = append(events[EventTypeKey], EventTx)
|
|
events[TxHashKey] = append(events[TxHashKey], fmt.Sprintf("%X", Tx(data.Tx).Hash()))
|
|
events[TxHeightKey] = append(events[TxHeightKey], fmt.Sprintf("%d", data.Height))
|
|
|
|
return b.pubsub.PublishWithEvents(ctx, data, events)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventNewRoundStep(data EventDataRoundState) error {
|
|
return b.Publish(EventNewRoundStep, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventTimeoutPropose(data EventDataRoundState) error {
|
|
return b.Publish(EventTimeoutPropose, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventTimeoutWait(data EventDataRoundState) error {
|
|
return b.Publish(EventTimeoutWait, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventNewRound(data EventDataNewRound) error {
|
|
return b.Publish(EventNewRound, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventCompleteProposal(data EventDataCompleteProposal) error {
|
|
return b.Publish(EventCompleteProposal, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventPolka(data EventDataRoundState) error {
|
|
return b.Publish(EventPolka, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventUnlock(data EventDataRoundState) error {
|
|
return b.Publish(EventUnlock, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventRelock(data EventDataRoundState) error {
|
|
return b.Publish(EventRelock, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventLock(data EventDataRoundState) error {
|
|
return b.Publish(EventLock, data)
|
|
}
|
|
|
|
func (b *EventBus) PublishEventValidatorSetUpdates(data EventDataValidatorSetUpdates) error {
|
|
return b.Publish(EventValidatorSetUpdates, data)
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
type NopEventBus struct{}
|
|
|
|
func (NopEventBus) Subscribe(
|
|
ctx context.Context,
|
|
subscriber string,
|
|
query tmpubsub.Query,
|
|
out chan<- interface{},
|
|
) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) Unsubscribe(ctx context.Context, subscriber string, query tmpubsub.Query) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) UnsubscribeAll(ctx context.Context, subscriber string) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventNewBlock(data EventDataNewBlock) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventNewBlockHeader(data EventDataNewBlockHeader) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventVote(data EventDataVote) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventTx(data EventDataTx) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventNewRoundStep(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventTimeoutPropose(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventTimeoutWait(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventNewRound(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventCompleteProposal(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventPolka(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventUnlock(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventRelock(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventLock(data EventDataRoundState) error {
|
|
return nil
|
|
}
|
|
|
|
func (NopEventBus) PublishEventValidatorSetUpdates(data EventDataValidatorSetUpdates) error {
|
|
return nil
|
|
}
|