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.
174 lines
5.2 KiB
174 lines
5.2 KiB
package types
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
abci "github.com/tendermint/abci/types"
|
|
cmn "github.com/tendermint/tmlibs/common"
|
|
"github.com/tendermint/tmlibs/log"
|
|
tmpubsub "github.com/tendermint/tmlibs/pubsub"
|
|
)
|
|
|
|
const defaultCapacity = 1000
|
|
|
|
type EventBusSubscriber interface {
|
|
Subscribe(ctx context.Context, subscriber string, query tmpubsub.Query, out chan<- interface{}) error
|
|
Unsubscribe(ctx context.Context, subscriber string, query tmpubsub.Query) error
|
|
UnsubscribeAll(ctx context.Context, subscriber string) 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 {
|
|
cmn.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 = *cmn.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.OnStart()
|
|
}
|
|
|
|
func (b *EventBus) OnStop() {
|
|
b.pubsub.OnStop()
|
|
}
|
|
|
|
func (b *EventBus) Subscribe(ctx context.Context, subscriber string, query tmpubsub.Query, out chan<- interface{}) error {
|
|
return b.pubsub.Subscribe(ctx, subscriber, query, out)
|
|
}
|
|
|
|
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()
|
|
b.pubsub.PublishWithTags(ctx, eventData, map[string]interface{}{EventTypeKey: eventType})
|
|
return nil
|
|
}
|
|
|
|
//--- block, tx, and vote events
|
|
|
|
func (b *EventBus) PublishEventNewBlock(event EventDataNewBlock) error {
|
|
return b.Publish(EventNewBlock, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventNewBlockHeader(event EventDataNewBlockHeader) error {
|
|
return b.Publish(EventNewBlockHeader, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventVote(event EventDataVote) error {
|
|
return b.Publish(EventVote, TMEventData{event})
|
|
}
|
|
|
|
// PublishEventTx publishes tx event with tags from Result. Note it will add
|
|
// predefined tags (EventTypeKey, TxHashKey). Existing tags with the same names
|
|
// will be overwritten.
|
|
func (b *EventBus) PublishEventTx(event EventDataTx) error {
|
|
// no explicit deadline for publishing events
|
|
ctx := context.Background()
|
|
|
|
tags := make(map[string]interface{})
|
|
|
|
// validate and fill tags from tx result
|
|
for _, tag := range event.Result.Tags {
|
|
// basic validation
|
|
if tag.Key == "" {
|
|
b.Logger.Info("Got tag with an empty key (skipping)", "tag", tag, "tx", event.Tx)
|
|
continue
|
|
}
|
|
|
|
switch tag.ValueType {
|
|
case abci.KVPair_STRING:
|
|
tags[tag.Key] = tag.ValueString
|
|
case abci.KVPair_INT:
|
|
tags[tag.Key] = tag.ValueInt
|
|
}
|
|
}
|
|
|
|
// add predefined tags
|
|
logIfTagExists(EventTypeKey, tags, b.Logger)
|
|
tags[EventTypeKey] = EventTx
|
|
|
|
logIfTagExists(TxHashKey, tags, b.Logger)
|
|
tags[TxHashKey] = fmt.Sprintf("%X", event.Tx.Hash())
|
|
|
|
logIfTagExists(TxHeightKey, tags, b.Logger)
|
|
tags[TxHeightKey] = event.Height
|
|
|
|
b.pubsub.PublishWithTags(ctx, TMEventData{event}, tags)
|
|
return nil
|
|
}
|
|
|
|
func (b *EventBus) PublishEventProposalHeartbeat(event EventDataProposalHeartbeat) error {
|
|
return b.Publish(EventProposalHeartbeat, TMEventData{event})
|
|
}
|
|
|
|
//--- EventDataRoundState events
|
|
|
|
func (b *EventBus) PublishEventNewRoundStep(event EventDataRoundState) error {
|
|
return b.Publish(EventNewRoundStep, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventTimeoutPropose(event EventDataRoundState) error {
|
|
return b.Publish(EventTimeoutPropose, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventTimeoutWait(event EventDataRoundState) error {
|
|
return b.Publish(EventTimeoutWait, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventNewRound(event EventDataRoundState) error {
|
|
return b.Publish(EventNewRound, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventCompleteProposal(event EventDataRoundState) error {
|
|
return b.Publish(EventCompleteProposal, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventPolka(event EventDataRoundState) error {
|
|
return b.Publish(EventPolka, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventUnlock(event EventDataRoundState) error {
|
|
return b.Publish(EventUnlock, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventRelock(event EventDataRoundState) error {
|
|
return b.Publish(EventRelock, TMEventData{event})
|
|
}
|
|
|
|
func (b *EventBus) PublishEventLock(event EventDataRoundState) error {
|
|
return b.Publish(EventLock, TMEventData{event})
|
|
}
|
|
|
|
func logIfTagExists(tag string, tags map[string]interface{}, logger log.Logger) {
|
|
if value, ok := tags[tag]; ok {
|
|
logger.Error("Found predefined tag (value will be overwritten)", "tag", tag, "value", value)
|
|
}
|
|
}
|