chore: source_client instead of channel_id in IBCv2 (#643)

Author: Tomasz Kulik

types/msg.go

@@ -361,16 +361,16 @@ type IBC2Msg struct {
 
 // Sends an IBC packet with given payloads over the existing channel.
 type IBC2SendPacketMsg struct {
-	ChannelID string        `json:"channel_id"`
-	Payloads  []IBC2Payload `json:"payloads"`
-	Timeout   uint64        `json:"timeout,string,omitempty"`
+	SourceClient string        `json:"source_client"`
+	Payloads     []IBC2Payload `json:"payloads"`
+	Timeout      uint64        `json:"timeout,string,omitempty"`
 }
 
 type IBC2WriteAcknowledgementMsg struct {
 	// The acknowledgement to send back
 	Ack IBCAcknowledgement `json:"ack"`
 	// Existing channel where the packet was received
-	ChannelID string `json:"channel_id"`
+	SourceClient string `json:"source_client"`
 	// Sequence number of the packet that was received
 	PacketSequence uint64 `json:"packet_sequence"`
 }

types/msg_test.go

@@ -163,13 +163,13 @@ func TestMsgFundCommunityPoolSerialization(t *testing.T) {
 }
 
 func TestMsgIBC2SendPacketSerialization(t *testing.T) {
-	document := []byte(`{"send_packet":{"channel_id":"channel-432", "payloads": [{"destination_port": "wasm.123", "version": "random_version", "encoding": "json", "value": ""}], "timeout": "0"}}`)
+	document := []byte(`{"send_packet":{"source_client":"channel-432", "payloads": [{"destination_port": "wasm.123", "version": "random_version", "encoding": "json", "value": ""}], "timeout": "0"}}`)
 
 	var msg IBC2Msg
 	err := json.Unmarshal(document, &msg)
 	require.NoError(t, err)
 
-	require.Equal(t, "channel-432", msg.SendPacket.ChannelID)
+	require.Equal(t, "channel-432", msg.SendPacket.SourceClient)
 	require.Equal(t, []IBC2Payload{{
 		DestinationPort: "wasm.123",
 		Version:         "random_version",