chore: add events for send packet (#7577)

Author: DimitrisJim

modules/core/04-channel/v2/keeper/events.go

@@ -2,15 +2,54 @@ package keeper
 
 import (
 	"context"
+	"encoding/hex"
+	"fmt"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	"github.com/cosmos/ibc-go/v9/modules/core/04-channel/v2/types"
 )
 
-// EmitSendPacketEvents emits events for the SendPacket handler.
-func EmitSendPacketEvents(ctx context.Context, packet types.Packet) {
-	// TODO: https://github.com/cosmos/ibc-go/issues/7386
+// emitSendPacketEvents emits events for the SendPacket handler.
+func emitSendPacketEvents(ctx context.Context, packet types.Packet) {
+	sdkCtx := sdk.UnwrapSDKContext(ctx)
+
+	sdkCtx.EventManager().EmitEvents(sdk.Events{
+		sdk.NewEvent(
+			types.EventTypeSendPacket,
+			sdk.NewAttribute(types.AttributeKeySrcChannel, packet.SourceChannel),
+			sdk.NewAttribute(types.AttributeKeyDstChannel, packet.DestinationChannel),
+			sdk.NewAttribute(types.AttributeKeySequence, fmt.Sprintf("%d", packet.Sequence)),
+			sdk.NewAttribute(types.AttributeKeyTimeoutTimestamp, fmt.Sprintf("%d", packet.TimeoutTimestamp)),
+			sdk.NewAttribute(types.AttributeKeyPayloadLength, fmt.Sprintf("%d", len(packet.Payloads))),
+			sdk.NewAttribute(types.AttributeKeyVersion, packet.Payloads[0].Version),
+			sdk.NewAttribute(types.AttributeKeyEncoding, packet.Payloads[0].Encoding),
+			sdk.NewAttribute(types.AttributeKeyData, hex.EncodeToString(packet.Payloads[0].Value)),
+		),
+		sdk.NewEvent(
+			sdk.EventTypeMessage,
+			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
+		),
+	})
+
+	for i, payload := range packet.Payloads {
+		sdkCtx.EventManager().EmitEvents(sdk.Events{
+			sdk.NewEvent(
+				types.EventTypeSendPayload,
+				sdk.NewAttribute(types.AttributeKeySrcChannel, packet.SourceChannel),
+				sdk.NewAttribute(types.AttributeKeyDstChannel, packet.DestinationChannel),
+				sdk.NewAttribute(types.AttributeKeySequence, fmt.Sprintf("%d", packet.Sequence)),
+				sdk.NewAttribute(types.AttributeKeyPayloadSequence, fmt.Sprintf("%d", i)),
+				sdk.NewAttribute(types.AttributeKeyVersion, payload.Version),
+				sdk.NewAttribute(types.AttributeKeyEncoding, payload.Encoding),
+				sdk.NewAttribute(types.AttributeKeyData, hex.EncodeToString(payload.Value)),
+			),
+			sdk.NewEvent(
+				sdk.EventTypeMessage,
+				sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
+			),
+		})
+	}
 }
 
 // EmitRecvPacketEvents emits events for the RecvPacket handler.

modules/core/04-channel/v2/keeper/packet.go

@@ -82,7 +82,7 @@ func (k *Keeper) sendPacket(
 
 	k.Logger(ctx).Info("packet sent", "sequence", strconv.FormatUint(packet.Sequence, 10), "dest_channel_id", packet.DestinationChannel, "src_channel_id", packet.SourceChannel)
 
-	EmitSendPacketEvents(ctx, packet)
+	emitSendPacketEvents(ctx, packet)
 
 	return sequence, destChannel, nil
 }

modules/core/04-channel/v2/types/events.go

@@ -8,15 +8,26 @@ import (
 
 // IBC channel events
 const (
+	EventTypeCreateChannel        = "create_channel"
+	EventTypeRegisterCounterparty = "register_counterparty"
+	EventTypeSendPacket           = "send_packet"
+	EventTypeSendPayload          = "send_payload"
+
 	AttributeKeyChannelID             = "channel_id"
 	AttributeKeyClientID              = "client_id"
 	AttributeKeyCounterpartyChannelID = "counterparty_channel_id"
+	AttributeKeySrcChannel            = "packet_source_channel"
+	AttributeKeyDstChannel            = "packet_dest_channel"
+	AttributeKeySequence              = "packet_sequence"
+	AttributeKeyTimeoutTimestamp      = "packet_timeout_timestamp"
+	AttributeKeyPayloadLength         = "packet_payload_length"
+	AttributeKeyPayloadSequence       = "payload_sequence"
+	AttributeKeyVersion               = "payload_version"
+	AttributeKeyEncoding              = "payload_encoding"
+	AttributeKeyData                  = "payload_data"
 )
 
 // IBC channel events vars
 var (
-	EventTypeCreateChannel        = "create_channel"
-	EventTypeRegisterCounterparty = "register_counterparty"
-
 	AttributeValueCategory = fmt.Sprintf("%s_%s", ibcexported.ModuleName, SubModuleName)
 )