feat(08-wasm): expose migrate entry point for 08-wasm (#6231)

* feat: expose migrate entry point for 08-wasm

* add CLI documentation

* add changelog

* improve CLI inline docs

* small fix

* rename variable

* remove gov flags

* use double quotes

* fix lint warning

* Apply suggestions from code review

Co-authored-by: Damian Nolan <damiannolan@gmail.com>

---------

Co-authored-by: Carlos Rodriguez <carlos@interchain.io>
Co-authored-by: Damian Nolan <damiannolan@gmail.com>

docs/docs/03-light-clients/04-wasm/08-client.md

@@ -29,6 +29,16 @@ simd tx ibc-wasm store-code [path/to/wasm-file] [flags]
 
 `path/to/wasm-file` is the path to the `.wasm` or `.wasm.gz` file.
 
+#### `migrate-contract`
+
+The `migrate-contract` command allows users to broadcast a transaction with a `MsgMigrateContract` to migrate the contract for a given light client to a new byte code denoted by the given checksum.
+
+```shell
+simd tx ibc-wasm migrate-contract [client-id] [checksum] [migrate-msg]
+```
+
+The migrate message must not be emptied and is expected to be a JSON-encoded string.
+
 ### Query
 
 The `query` commands allow users to query `08-wasm` state.

modules/light-clients/08-wasm/CHANGELOG.md

@@ -51,6 +51,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Features
 
 * [#\5821](https://github.com/cosmos/ibc-go/pull/5821) feat: add `VerifyMembershipProof` RPC query (querier approach for conditional clients).
+* [#\6231](https://github.com/cosmos/ibc-go/pull/6231) feat: add CLI to broadcast transaction with `MsgMigrateContract`.
 
 ### Bug Fixes
 

modules/light-clients/08-wasm/client/cli/cli.go

@@ -36,6 +36,7 @@ func NewTxCmd() *cobra.Command {
 
 	txCmd.AddCommand(
 		newSubmitStoreCodeProposalCmd(),
+		newMigrateContractCmd(),
 	)
 
 	return txCmd

modules/light-clients/08-wasm/client/cli/tx.go

@@ -27,7 +27,7 @@ func newSubmitStoreCodeProposalCmd() *cobra.Command {
 		Use:     "store-code [path/to/wasm-file]",
 		Short:   "Reads wasm code from the file and creates a proposal to store the wasm code",
 		Long:    "Reads wasm code from the file and creates a proposal to store the wasm code",
-		Example: fmt.Sprintf("%s tx %s wasm [path/to/wasm_file]", version.AppName, ibcexported.ModuleName),
+		Example: fmt.Sprintf("%s tx %s-wasm store-code [path/to/wasm_file]", version.AppName, ibcexported.ModuleName),
 		Args:    cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx, err := client.GetClientTxContext(cmd)
@@ -82,3 +82,41 @@ func newSubmitStoreCodeProposalCmd() *cobra.Command {
 
 	return cmd
 }
+
+func newMigrateContractCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "migrate-contract [client-id] [checksum] [migrate-msg]",
+		Short:   "Migrates a contract to a new byte code",
+		Long:    "Migrates the contract for the specified client ID to the byte code corresponding to checksum, passing the JSON-encoded migrate message to the contract",
+		Example: fmt.Sprintf("%s tx %s-wasm migrate-contract 08-wasm-0 b3a49b2914f5e6a673215e74325c1d153bb6776e079774e52c5b7e674d9ad3ab {}", version.AppName, ibcexported.ModuleName),
+		Args:    cobra.ExactArgs(3), // Ensure exactly three arguments are passed
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientTxContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			clientID := args[0]
+			checksum := args[1]
+			migrateMsg := args[2]
+
+			// Construct the message
+			msg := &types.MsgMigrateContract{
+				Signer:   clientCtx.GetFromAddress().String(),
+				ClientId: clientID,
+				Checksum: []byte(checksum),
+				Msg:      []byte(migrateMsg),
+			}
+
+			if err := msg.ValidateBasic(); err != nil {
+				return err
+			}
+
+			// Generate or broadcast the transaction
+			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), msg)
+		},
+	}
+
+	flags.AddTxFlagsToCmd(cmd)
+	return cmd
+}