feat: add USDT-ETH e2e infrastructure

.env

@@ -10,6 +10,9 @@ BOLTZ_CLIENT_IMAGE=boltz/boltz-client:latest
 FOUNDRY_IMAGE=boltz/foundry:latest
 GAS_SPONSOR_EMULATOR_IMAGE=boltz/gas-sponsor-emulator:latest
 ARBITRUM_E2E_BLOCK_NUMBER=465600501
+ETHEREUM_E2E_BLOCK_NUMBER=25155533
+STABLES_E2E_ACCOUNT_INDEX=1
+STABLES_E2E_USDT0_ETH_AMOUNT=500000000
 BITCOIN_CORE_IMAGE=boltz/bitcoin-core:latest
 ELEMENTS_IMAGE=boltz/elements:latest
 ELECTRS_IMAGE=boltz/electrs:latest

data/backend/boltz.conf

@@ -79,7 +79,7 @@ maxSwapAmount = 4_294_967
 minSwapAmount = 50_000
 
   [pairs.timeoutDelta]
-  chain= 1440
+  chain = 1440
   reverse = 1440
   swapMinimal = 1440
   swapMaximal = 2880
@@ -104,7 +104,7 @@ swapTypes = ["chain"]
   minSwapAmount = 25_000
 
   [pairs.timeoutDelta]
-  chain= 1440
+  chain = 1440
   reverse = 1440
   swapMinimal = 1440
   swapMaximal = 2880

docker-compose.yml

@@ -186,6 +186,9 @@ services:
       anvil-eth:
         condition: service_healthy
         required: false
+      stables-e2e-wallet:
+        condition: service_completed_successfully
+        required: false
       regtest-start:
         condition: service_completed_successfully
       postgres:
@@ -293,6 +296,33 @@ services:
       start_period: 0s
     profiles: ['default', 'ci', 'backend-dev', 'webapp-ci']
 
+  anvil-eth:
+    <<: *base-anvil
+    hostname: anvil-eth
+    container_name: anvil-eth
+    environment:
+      FORK_RPC_URL: ${ETHEREUM_E2E_RPC_URL:-}
+      FORK_BLOCK_NUMBER: ${ETHEREUM_E2E_BLOCK_NUMBER}
+      CHAIN_ID: 1
+    ports:
+      - ${ETHEREUM_E2E_PORT:-18546}:8545
+
+  stables-e2e-wallet:
+    hostname: stables-e2e-wallet
+    container_name: stables-e2e-wallet
+    image: ${SCRIPTS_IMAGE}
+    depends_on:
+      anvil-eth:
+        condition: service_healthy
+    environment:
+      STABLES_E2E_ACCOUNT_INDEX: ${STABLES_E2E_ACCOUNT_INDEX:-1}
+      STABLES_E2E_USDT0_ETH_AMOUNT: ${STABLES_E2E_USDT0_ETH_AMOUNT:-500000000}
+      STABLES_E2E_USDT0_ETH_TOKEN: ${STABLES_E2E_USDT0_ETH_TOKEN:-0xdAC17F958D2ee523a2206206994597C13D831ec7}
+      STABLES_E2E_USDT0_ETH_FUNDING_SOURCE: ${STABLES_E2E_USDT0_ETH_FUNDING_SOURCE:-0xF977814e90dA44bFA03b6295A0616a897441aceC}
+    command:
+      ['/bin/bash', '-c', 'source /etc/profile.d/utils.sh && fund-stables-e2e-wallet']
+    profiles: ['stables-e2e']
+
   anvil-arb:
     <<: *base-anvil
     hostname: anvil-arb

images/scripts/utils.sh

@@ -407,6 +407,59 @@ wait-for-cln-sync(){
   done
 }
 
+# Funds an Anvil account with USDT0-ETH on the Ethereum e2e fork by
+# impersonating a whale funding source and transferring tokens from it.
+fund-stables-e2e-wallet() {
+  set -euo pipefail
+
+  local rpc_url="http://anvil-eth:8545"
+  local account_index="${STABLES_E2E_ACCOUNT_INDEX:-1}"
+  local amount="${STABLES_E2E_USDT0_ETH_AMOUNT:-500000000}"
+  local token="${STABLES_E2E_USDT0_ETH_TOKEN:-0xdAC17F958D2ee523a2206206994597C13D831ec7}"
+  local funding_source="${STABLES_E2E_USDT0_ETH_FUNDING_SOURCE:-0xF977814e90dA44bFA03b6295A0616a897441aceC}"
+
+  rpc() { cast rpc --rpc-url "$rpc_url" "$@"; }
+
+  if ! [[ "$account_index" =~ ^[0-9]+$ ]]; then
+    echo "STABLES_E2E_ACCOUNT_INDEX must be a non-negative integer" >&2
+    return 1
+  fi
+
+  local wallet_address
+  wallet_address="$(rpc eth_accounts | jq -r --argjson index "$account_index" '.[$index] // empty')"
+  if [ -z "$wallet_address" ]; then
+    echo "missing Anvil account at STABLES_E2E_ACCOUNT_INDEX=$account_index" >&2
+    return 1
+  fi
+
+  if [ "$(cast code --rpc-url "$rpc_url" "$token")" = "0x" ]; then
+    echo "missing USDT0-ETH token contract on Ethereum e2e fork" >&2
+    return 1
+  fi
+
+  rpc anvil_setBalance "$wallet_address" 0x8ac7230489e80000 # 10 ETH for gas
+  rpc anvil_setBalance "$funding_source" 0xde0b6b3a7640000  # 1 ETH for gas
+  rpc anvil_impersonateAccount "$funding_source"
+  trap 'rpc anvil_stopImpersonatingAccount "$funding_source" >/dev/null || true' RETURN
+
+  cast send \
+    --rpc-url "$rpc_url" \
+    --unlocked \
+    --from "$funding_source" \
+    "$token" \
+    "transfer(address,uint256)" \
+    "$wallet_address" \
+    "$amount"
+
+  # cast call annotates the result as "<value> (uint256)"; keep only the value.
+  local wallet_balance
+  wallet_balance="$(cast call --rpc-url "$rpc_url" "$token" "balanceOf(address)(uint256)" "$wallet_address" | awk '{print $1}')"
+  if [ "$wallet_balance" -lt "$amount" ]; then
+    echo "failed to fund stables e2e wallet" >&2
+    return 1
+  fi
+}
+
 # Deploy contracts
 deploy_contract() {
   cast send --rpc-url http://anvil:8545 --private-key 0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d --create $1