cosmos-sdk-starter

cosmos-sdk-starter

Provides a start command handler for rollkit which can be used by the cosmos-sdk apps

Usage

Requirements

• Go version >= 1.21
• Ignite CLI >= v28.3.0

Steps

• Create a cosmos-sdk app using ignite cli ignite scaffold chain gm --address-prefix gm

• Add cosmos-sdk-starter to your gm project

  • cd gm
  • go get github.com/rollkit/cosmos-sdk-starter
  • go mod tidy

• Make sure to check that cosmos-sdk version is v0.50.6+ and rollkit version is v0.13.1+

• Navigate to cmd/gmd/cmd/commands.go under your gm project

• Add following imports

  rollserv "github.com/rollkit/cosmos-sdk-starter/server"
  rollconf "github.com/rollkit/rollkit/config"
  

• Edit initRootCmd function to replace

  server.AddCommands(rootCmd, app.DefaultNodeHome, newApp, appExport, addModuleInitFlags)
  

  to

  server.AddCommandsWithStartCmdOptions(
  		rootCmd,
  		app.DefaultNodeHome,
  		newApp, appExport,
  		server.StartCmdOptions{
  			AddFlags:            rollconf.AddFlags,
  			StartCommandHandler: rollserv.StartHandler[servertypes.Application],
  		},
  )
  

• Build your gm chain using ignite chain build

• Your gm app is now using Rollkit instead of Cometbft

• For running the gm chain using Rollkit, it is important to add the Rollkit sequencer to gm app's genesis.json file. Follow instructions provided in the adding rollkit sequencer to genesis

• Finally lauch app by passing rollkit flags: e.g., gmd start --rollkit.aggregator --rpc.laddr tcp://127.0.0.1:36657 --grpc.address 127.0.0.1:9290 --p2p.laddr "0.0.0.0:36656" --minimum-gas-prices="0.025stake" --rollkit.da_address "http://localhost:7980"