feat(agoricd): have agoricd start delegate to ag-chain-cosmos

golang/cosmos/app/app.go

@@ -365,7 +365,7 @@ func NewAgoricApp(
 
 	// This function is tricky to get right, so we build it ourselves.
 	callToController := func(ctx sdk.Context, str string) (string, error) {
-		if sendToController == nil || vm.IsSimulation(ctx) {
+		if vm.IsSimulation(ctx) {
 			// Just return empty, since the message is being simulated.
 			return "", nil
 		}

golang/cosmos/cmd/agoricd/main.go

@@ -2,7 +2,11 @@ package main
 
 import (
 	"os"
+	"os/exec"
 	"path/filepath"
+	"syscall"
+
+	"github.com/tendermint/tendermint/libs/log"
 
 	gaia "github.com/Agoric/agoric-sdk/golang/cosmos/app"
 	"github.com/Agoric/agoric-sdk/golang/cosmos/daemon"
@@ -16,6 +20,31 @@ func main() {
 	}
 
 	gaia.DefaultNodeHome = filepath.Join(userHomeDir, ".agoricd")
+
+	oldAppName := daemoncmd.AppName
 	daemoncmd.AppName = "agoricd"
+
+	if daemoncmd.AppName != oldAppName {
+		// We need to delegate to our default app for running the actual chain.
+		daemoncmd.OnStartHook = func(logger log.Logger) {
+			logger.Info("Start chain delegating to another executable",
+				"startApp", oldAppName,
+			)
+
+			binary, lookErr := exec.LookPath(oldAppName)
+			if lookErr != nil {
+				panic(lookErr)
+			}
+
+			args := append([]string{oldAppName}, "--home", gaia.DefaultNodeHome)
+			args = append(args, os.Args[1:]...)
+
+			execErr := syscall.Exec(binary, args, os.Environ())
+			if execErr != nil {
+				panic(execErr)
+			}
+		}
+	}
+
 	daemon.RunWithController(nil)
 }

golang/cosmos/daemon/cmd/root.go

@@ -40,6 +40,7 @@ import (
 type Sender func(needReply bool, str string) (string, error)
 
 var AppName = "ag-chain-cosmos"
+var OnStartHook func(log.Logger)
 
 // NewRootCmd creates a new root command for simd. It is called once in the
 // main function.
@@ -190,6 +191,10 @@ func txCommand() *cobra.Command {
 
 func makeNewApp(sender Sender) func(log.Logger, dbm.DB, io.Writer, servertypes.AppOptions) servertypes.Application {
 	return func(logger log.Logger, db dbm.DB, traceStore io.Writer, appOpts servertypes.AppOptions) servertypes.Application {
+		if OnStartHook != nil {
+			OnStartHook(logger)
+		}
+
 		var cache sdk.MultiStorePersistentCache
 
 		if cast.ToBool(appOpts.Get(server.FlagInterBlockCache)) {