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fix non-deterministic map iteration #12693

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fix non-deterministic map iteration #12693

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2b5f259
fix non-deterministic map iteration
bruce-wayne2 Jul 22, 2022
fe7c36b
update pull request id
bruce-wayne2 Jul 22, 2022
fb6cb58
Merge branch 'main' into main
bruce-wayne2 Jul 25, 2022
0ae4cc8
use generic functions to sort map
bruce-wayne2 Jul 26, 2022
c2fedde
update CHANGELOG.md
bruce-wayne2 Jul 26, 2022
0af0802
Merge remote-tracking branch 'origin/main'
bruce-wayne2 Jul 26, 2022
46cf0a8
Merge branch 'main' into merge-main
bruce-wayne2 Aug 1, 2022
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -51,6 +51,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* [#12634](https://github.com/cosmos/cosmos-sdk/pull/12634) Move `sdk.Dec` to math package.
* [#12596](https://github.com/cosmos/cosmos-sdk/pull/12596) Remove all imports of the non-existent gogo/protobuf v1.3.3 to ease downstream use and go workspaces.
* [#12187](https://github.com/cosmos/cosmos-sdk/pull/12187) Add batch operation for x/nft module.
* [#12693](https://github.com/cosmos/cosmos-sdk/pull/12693) Make sure the order of each node is consistent when emitting proto events.

### State Machine Breaking

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9 changes: 8 additions & 1 deletion types/events.go
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Expand Up @@ -3,6 +3,8 @@ package types
import (
"encoding/json"
"fmt"
"golang.org/x/exp/maps"
"golang.org/x/exp/slices"
"reflect"
"sort"
"strings"
Expand Down Expand Up @@ -87,8 +89,13 @@ func TypedEventToEvent(tev proto.Message) (Event, error) {
return Event{}, err
}

// sort the keys to ensure the order is always the same
keys := maps.Keys(attrMap)
slices.Sort(keys)

attrs := make([]abci.EventAttribute, 0, len(attrMap))
for k, v := range attrMap {
for _, k := range keys {
v := attrMap[k]
attrs = append(attrs, abci.EventAttribute{
Key: k,
Value: string(v),
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15 changes: 15 additions & 0 deletions types/events_test.go
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Expand Up @@ -67,6 +67,21 @@ func (s *eventsTestSuite) TestEventManager() {
s.Require().Equal(em.Events(), events.AppendEvent(event))
}

func (s *eventsTestSuite) TestEmitTypedEvent() {
s.Run("deterministic key-value order", func() {
for i := 0; i < 10; i++ {
em := sdk.NewEventManager()
coin := sdk.NewCoin("fakedenom", sdk.NewInt(1999999))
s.Require().NoError(em.EmitTypedEvent(&coin))
s.Require().Len(em.Events(), 1)
attrs := em.Events()[0].Attributes
s.Require().Len(attrs, 2)
s.Require().Equal(attrs[0].Key, "amount")
s.Require().Equal(attrs[1].Key, "denom")
}
})
}
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would be good to add rapid / fuzzy test


func (s *eventsTestSuite) TestEventManagerTypedEvents() {
em := sdk.NewEventManager()

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