eth: Update bytecode gen script

This diff updates the script which used to only generate the runtime
bytecode to also update contract.go and the bytecode used to initiate
the contract in the testing harness.

dex/networks/eth/contracts/README.md

@@ -2,11 +2,7 @@
 
 Have `solc` and `abigen` installed on your system and run from this directory:
 
-`abigen --sol ETHSwapV{version}.sol --pkg eth --out ../contract.go`
-
-To generate the runtime bytecode, run from this directory:
-
-`./genruntime.sh {version}`
+`./updatecontract.sh {version}`
 
 ## History
 

dex/networks/eth/contracts/updatecontract.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+# This script does 3 things:
+#
+# 1. Updates contract.go to reflect updated solidity code.
+# 2. Generates the runtime bytecoode. This is used to compare against the runtime
+#    bytecode on chain in order to verify that the expected contract is deployed.
+# 3. Updates the bytecode in the harness test.
+
+if [ "$#" -ne 1 ]
+then
+  echo "Usage: $0 version" >&2
+  exit 1
+fi
+
+ETH_SWAP_VERSION=$1
+SOLIDITY_FILE=ETHSwapV${ETH_SWAP_VERSION}.sol
+if [ ! -f ./${SOLIDITY_FILE} ]
+then
+    echo "${SOLIDITY_FILE} does not exist" >&2
+    exit 1
+fi
+
+solc --bin-runtime --optimize ${SOLIDITY_FILE} -o .
+BYTECODE=$(<ETHSwap.bin-runtime)
+
+cat > "../BinRuntimeV${ETH_SWAP_VERSION}.go" <<EOF
+// Code generated - DO NOT EDIT.
+// This file is a generated binding and any manual changes will be lost.
+
+package eth
+
+const ETHSwapRuntimeBin = "${BYTECODE}"
+EOF
+
+rm ETHSwap.bin-runtime
+
+abigen --sol ${SOLIDITY_FILE} --pkg eth --out ../contract.go
+
+solc --bin --optimize ${SOLIDITY_FILE} -o .
+BYTECODE=$(<ETHSwap.bin)
+sed -i.tmp "s/ETH_SWAP_V${ETH_SWAP_VERSION}=.*/ETH_SWAP_V${ETH_SWAP_VERSION}=\"${BYTECODE}\"/" ../../../testing/eth/harness.sh
+rm ../../../testing/eth/harness.sh.tmp
+rm ETHSwap.bin