Dymension Rollapp

Rollapp-wasm - A template RollApp chain

This repository hosts rollapp-wasm, a template implementation of a dymension rollapp.

rollapp-wasm is an example of a working RollApp using dymension-RDK and dymint.

It uses Cosmos-SDK's simapp as a reference, but with the following changes:

• minimal app setup
• wired IBC for ICS 20 Fungible Token Transfers
• Uses dymint for block sequencing and replacing tendermint
• Uses modules from dymension-RDK to sync with dymint and provide RollApp custom logic

Overview

Note: Requires Go 1.21

Installing / Getting started

Build and install the rollapp-wasm binary:

export BECH32_PREFIX=rol
make install BECH32_PREFIX=$BECH32_PREFIX

Initial configuration

export the following variables:

export EXECUTABLE="rollapp-wasm"
export BECH32_PREFIX="rol"
export ROLLAPP_CHAIN_ID="rollappwasm_1234-1"
export KEY_NAME_ROLLAPP="rol-user"
export BASE_DENOM="awsm"
export DENOM=$(echo "$BASE_DENOM" | sed 's/^.//')
export MONIKER="$ROLLAPP_CHAIN_ID-sequencer"

export ROLLAPP_HOME_DIR="$HOME/.rollapp-wasm"
export ROLLAPP_SETTLEMENT_INIT_DIR_PATH="${ROLLAPP_HOME_DIR}/init"

And initialize the rollapp:

sh scripts/init.sh

You can find out in https://github.com/CosmWasm/wasmd#compile-time-parameters that:

There are a few variables was allow blockchains to customize at compile time. If you build your own chain and import x/wasm, you can adjust a few items via module parameters, but a few others did not fit in that, as they need to be used by stateless ValidateBasic(). Thus, we made them as flags and set them in start.go so that they can be overridden on your custom chain.

rollapp-wasm start --max-label-size 64 --max-wasm-size 2048000 --max-wasm-proposal-size 2048000

Those flags are optional, the default value was set as:

wasmtypes.MaxLabelSize          = 128
wasmtypes.MaxWasmSize           = 819200
wasmtypes.MaxProposalWasmSize   = 3145728

Download cw20-ics20 smartcontract

Download cw20-ics20 smartcontract with a specific version:

sh scripts/download_release.sh v1.0.0

Run rollapp

rollapp-wasm start

You should have a running local rollapp!

Run a rollapp with local settlement node

Run local dymension hub node

Follow the instructions on Dymension docs to run local dymension hub node

all scripts are adjusted to use local hub node that's hosted on the default port localhost:36657.

configuration with a remote hub node is also supported, the following variables must be set:

export HUB_RPC_ENDPOINT="http://localhost"
export HUB_RPC_PORT="36657" # default: 36657
export HUB_RPC_URL="${HUB_RPC_ENDPOINT}:${HUB_RPC_PORT}"
export HUB_CHAIN_ID="dymension_100-1"

dymd config chain-id ${HUB_CHAIN_ID}
dymd config node ${HUB_RPC_URL}

export HUB_KEY_WITH_FUNDS="hub-user" # This key should exist on the keyring-backend test

Create sequencer keys

create sequencer key using dymd

dymd keys add sequencer --keyring-dir ~/.rollapp-wasm/sequencer_keys --keyring-backend test
SEQUENCER_ADDR=`dymd keys show sequencer --address --keyring-backend test --keyring-dir ~/.rollapp-wasm/sequencer_keys`

fund the sequencer account

# this will retrieve the min bond amount from the hub
# if you're using an new address for registering a sequencer,
# you have to account for gas fees so it should the final value should be increased
BOND_AMOUNT="$(dymd q sequencer params -o json --node ${HUB_RPC_URL} | jq -r '.params.min_bond.amount')$(dymd q sequencer params -o jsono | jq -r '.params.min_bond.denom')"
echo $BOND_AMOUNT

# Extract the numeric part
NUMERIC_PART=$(echo $BOND_AMOUNT | sed 's/adym//')

# Add 100000000000000000000 for fees
NEW_NUMERIC_PART=$(echo "$NUMERIC_PART + 100000000000000000000" | bc)

# Append 'adym' back
TRANSFER_AMOUNT="${NEW_NUMERIC_PART}adym"

dymd tx bank send $HUB_KEY_WITH_FUNDS $SEQUENCER_ADDR ${TRANSFER_AMOUNT} --keyring-backend test --broadcast-mode block --fees 1dym -y --node ${HUB_RPC_URL} --chain-id ${HUB_CHAIN_ID}

Generate denommetadata

sh scripts/settlement/generate_denom_metadata.sh

Add genesis accounts

sh scripts/settlement/add_genesis_accounts.sh

Register rollapp on settlement

sh scripts/settlement/register_rollapp_to_hub.sh

Register sequencer for rollapp on settlement

sh scripts/settlement/register_sequencer_to_hub.sh

Configure the rollapp

Modify dymint.toml in the chain directory (~/.rollapp/config) set:

linux:

sed -i 's/settlement_layer.*/settlement_layer = "dymension"/' ${ROLLAPP_HOME_DIR}/config/dymint.toml
sed -i '/node_address =/c\node_address = '\"$HUB_RPC_URL\" "${ROLLAPP_HOME_DIR}/config/dymint.toml"
sed -i '/rollapp_id =/c\rollapp_id = '\"$ROLLAPP_CHAIN_ID\" "${ROLLAPP_HOME_DIR}/config/dymint.toml"

mac:

sed -i '' 's/settlement_layer.*/settlement_layer = "dymension"/' ${ROLLAPP_HOME_DIR}/config/dymint.toml
sed -i '' 's|node_address =.*|node_address = '\"$HUB_RPC_URL\"'|' "${ROLLAPP_HOME_DIR}/config/dymint.toml"
sed -i '' 's|rollapp_id =.*|rollapp_id = '\"$ROLLAPP_CHAIN_ID\"'|' "${ROLLAPP_HOME_DIR}/config/dymint.toml"

Run rollapp locally

rollapp-wasm start

or as a systemd service:

sudo tee /etc/systemd/system/rollapp-wasm.service > /dev/null <<EOF
[Unit] 
Description=rollapp-wasm
After=network.target 
[Service] 
Type=simple
User=$USER
ExecStart=$(which rollapp-wasm) start
Restart=on-failure
RestartSec=10
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF
sudo systemctl daemon-reload

Setup IBC between rollapp and local dymension hub node

Install dymension relayer

git clone https://github.com/dymensionxyz/go-relayer.git --branch v0.2.0-v2.3.1-relayer
cd go-relayer && make install

Establish IBC channel

while the rollapp and the local dymension hub node running, run:

sh scripts/ibc/setup_ibc.sh

After successful run, the new established channels will be shown

run the relayer

rly start hub-rollapp

or as a systemd service:

sudo tee /etc/systemd/system/relayer.service > /dev/null <<EOF
[Unit]
Description=rollapp
After=network.target
[Service]
Type=simple
User=$USER
ExecStart=$(which rly) start hub-rollapp
Restart=on-failure
RestartSec=10
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF

Deploy the installed contract

sh scripts/wasm/deploy_contract.sh

Make the ibc transfer

sh scripts/wasm/ibc_transfer.sh

Configure empty block time to 1hr

Stop the rollapp:

kill $(pgrep rollapp-wasm)

Linux:

sed -i 's/empty_blocks_max_time = "3s"/empty_blocks_max_time = "3600s"/' ${ROLLAPP_HOME_DIR}/config/dymint.toml

Mac:

sed -i '' 's/empty_blocks_max_time = "3s"/empty_blocks_max_time = "3600s"/' ${ROLLAPP_HOME_DIR}/config/dymint.toml

Start the rollapp:

rollapp-wasm start