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feat(utils): better gas pricing api (#30)
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Signed-off-by: sam bacha <sam@manifoldfinance.com>
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sam bacha committed Oct 14, 2021
1 parent d32a5ea commit f432aa2
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183 changes: 92 additions & 91 deletions scripts/common.sh
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
set -eo pipefail

if [[ ${DEBUG} ]]; then
set -x
set -x
fi

# All contracts are output to `out/addresses.json` by default
Expand All @@ -16,38 +16,38 @@ ETH_RPC_URL=${ETH_RPC_URL:-http://localhost:8545}
GREEN='\033[0;32m'
NC='\033[0m' # No Color
log() {
printf '%b\n' "${GREEN}${*}${NC}"
echo ""
printf '%b\n' "${GREEN}${*}${NC}"
echo ""
}

# Coloured output helpers
if command -v tput > /dev/null 2>&1; then
if [ $(($(tput colors 2> /dev/null))) -ge 8 ]; then
# Enable colors
TPUT_RESET="$(tput sgr 0)"
TPUT_YELLOW="$(tput setaf 3)"
TPUT_RED="$(tput setaf 1)"
TPUT_BLUE="$(tput setaf 4)"
TPUT_GREEN="$(tput setaf 2)"
TPUT_WHITE="$(tput setaf 7)"
TPUT_BOLD="$(tput bold)"
fi
if command -v tput >/dev/null 2>&1; then
if [ $(($(tput colors 2>/dev/null))) -ge 8 ]; then
# Enable colors
TPUT_RESET="$(tput sgr 0)"
TPUT_YELLOW="$(tput setaf 3)"
TPUT_RED="$(tput setaf 1)"
TPUT_BLUE="$(tput setaf 4)"
TPUT_GREEN="$(tput setaf 2)"
TPUT_WHITE="$(tput setaf 7)"
TPUT_BOLD="$(tput bold)"
fi
fi

# ensure ETH_FROM is set and give a meaningful error message
if [[ -z ${ETH_FROM} ]]; then
echo "ETH_FROM not found, please set it and re-run the last command."
exit 1
echo "ETH_FROM not found, please set it and re-run the last command."
exit 1
fi

# Make sure address is checksummed
if [ $ETH_FROM != $(seth --to-checksum-address $ETH_FROM) ]; then
echo "ETH_FROM not checksummed, please format it with 'seth --to-checksum-address <address>'"
exit 1
if [ "$ETH_FROM" != "$(seth --to-checksum-address "$ETH_FROM")" ]; then
echo "ETH_FROM not checksummed, please format it with 'seth --to-checksum-address <address>'"
exit 1
fi

# Setup addresses file
cat > "$ADDRESSES_FILE" <<EOF
cat >"$ADDRESSES_FILE" <<EOF
{
"DEPLOYER": "$ETH_FROM"
}
Expand All @@ -56,98 +56,99 @@ EOF
# Call as `ETH_FROM=0x... ETH_RPC_URL=<url> deploy ContractName arg1 arg2 arg3`
# (or omit the env vars if you have already set them)
deploy() {
NAME=$1
ARGS=${@:2}
# select the filename and the contract in it
PATTERN=".contracts[\"src/$NAME.sol\"].$NAME"
NAME=$1
ARGS=${@:2}
# select the filename and the contract in it
PATTERN=".contracts[\"src/$NAME.sol\"].$NAME"

# get the constructor's signature
ABI=$(jq -r "$PATTERN.abi" out/dapp.sol.json)
SIG=$(echo $ABI | seth --abi-constructor)
# get the constructor's signature
ABI=$(jq -r "$PATTERN.abi" out/dapp.sol.json)
SIG=$(echo "$ABI" | seth --abi-constructor)

# get the bytecode from the compiled file
BYTECODE=0x$(jq -r "$PATTERN.evm.bytecode.object" out/dapp.sol.json)
# get the bytecode from the compiled file
BYTECODE=0x$(jq -r "$PATTERN.evm.bytecode.object" out/dapp.sol.json)

# estimate gas
GAS=$(seth estimate --create $BYTECODE $SIG $ARGS --rpc-url $ETH_RPC_URL)
# estimate gas
GAS=$(seth estimate --create "$BYTECODE" "$SIG" $ARGS --rpc-url "$ETH_RPC_URL")

# deploy
ADDRESS=$(dapp create $NAME $ARGS -- --gas $GAS --rpc-url $ETH_RPC_URL)
# deploy
ADDRESS=$(dapp create "$NAME" $ARGS -- --gas "$GAS" --rpc-url "$ETH_RPC_URL")

# save the addrs to the json
# TODO: It'd be nice if we could evolve this into a minimal versioning system
# e.g. via commit / chainid etc.
saveContract $NAME $ADDRESS
# save the addrs to the json
# TODO: It'd be nice if we could evolve this into a minimal versioning system
# e.g. via commit / chainid etc.
saveContract "$NAME" "$ADDRESS"

echo $ADDRESS
echo "$ADDRESS"
}

# Call as `saveContract ContractName 0xYourAddress` to store the contract name
# & address to the addresses json file
saveContract() {
# create an empty json if it does not exist
if [[ ! -e $ADDRESSES_FILE ]]; then
echo "{}" > $ADDRESSES_FILE
fi
result=$(cat $ADDRESSES_FILE | jq -r ". + {\"$1\": \"$2\"}")
printf %s "$result" > "$ADDRESSES_FILE"
# create an empty json if it does not exist
if [[ ! -e $ADDRESSES_FILE ]]; then
echo "{}" >"$ADDRESSES_FILE"
fi
result=$(cat "$ADDRESSES_FILE" | jq -r ". + {\"$1\": \"$2\"}")
printf %s "$result" >"$ADDRESSES_FILE"
}

estimate_gas() {
NAME=$1
ARGS=${@:2}
# select the filename and the contract in it
PATTERN=".contracts[\"src/$NAME.sol\"].$NAME"

# get the constructor's signature
ABI=$(jq -r "$PATTERN.abi" out/dapp.sol.json)
SIG=$(echo $ABI | seth --abi-constructor)

# get the bytecode from the compiled file
BYTECODE=0x$(jq -r "$PATTERN.evm.bytecode.object" out/dapp.sol.json)
# estimate gas
GAS=$(seth estimate --create $BYTECODE $SIG $ARGS --rpc-url $ETH_RPC_URL)

GASNOW_RESPONSE=$(curl -s https://www.gasnow.org/api/v3/gas/price)
response=$(jq '.code' <<< $GASNOW_RESPONSE)
if [[ $response != "200" ]]; then
echo "Could not get gas information from ${TPUT_BOLD}gasnow.org${TPUT_RESET}: https://www.gasnow.org"
echo "response code: $response"
else
rapid=$(( $(jq '.data.rapid' <<< $GASNOW_RESPONSE) / 1000000000 ))
fast=$(( $(jq '.data.fast' <<< $GASNOW_RESPONSE) / 1000000000 ))
standard=$(( $(jq '.data.standard' <<< $GASNOW_RESPONSE) / 1000000000 ))
slow=$(( $(jq '.data.slow' <<< $GASNOW_RESPONSE) / 1000000000 ))
echo "Gas prices from ${TPUT_BOLD}gasnow.org${TPUT_RESET}: https://www.gasnow.org"
echo " \
NAME=$1
ARGS=${@:2}
# select the filename and the contract in it
PATTERN=".contracts[\"src/$NAME.sol\"].$NAME"

# get the constructor's signature
ABI=$(jq -r "$PATTERN.abi" out/dapp.sol.json)
SIG=$(echo "$ABI" | seth --abi-constructor)

# get the bytecode from the compiled file
BYTECODE=0x$(jq -r "$PATTERN.evm.bytecode.object" out/dapp.sol.json)
# estimate gas
GAS=$(seth estimate --create "$BYTECODE" "$SIG" $ARGS --rpc-url "$ETH_RPC_URL")

TXPRICE_RESPONSE=$(curl -sL https://api.txprice.com/v1)
response=$(jq '.code' <<<"$TXPRICE_RESPONSE")
if [[ $response != "200" ]]; then
echo "Could not get gas information from ${TPUT_BOLD}txprice.com${TPUT_RESET}: https://api.txprice.com/v1"
echo "response code: $response"
else
rapid=$(($(jq '.blockPrices[0].estimatedPrices[0].maxFeePerGas' <<<"$TXPRICE_RESPONSE")))
fast=$(($(jq '.blockPrices[0].estimatedPrices[1].maxFeePerGas' <<<"$TXPRICE_RESPONSE")))
standard=$(($(jq '.blockPrices[0].estimatedPrices[2].maxFeePerGas' <<<"$TXPRICE_RESPONSE")))
slow=$(($(jq '.blockPrices[0].estimatedPrices[3].maxFeePerGas' <<<"$TXPRICE_RESPONSE")))
basefee$(($(jq '.blockPrices[0].baseFeePerGas' <<<"$TXPRICE_RESPONSE")))
echo "Gas prices from ${TPUT_BOLD}txprice.com${TPUT_RESET}: https://api.txprice.com/v1"
echo " \
${TPUT_RED}Rapid: $rapid gwei ${TPUT_RESET} \n
${TPUT_YELLOW}Fast: $fast gwei \n
${TPUT_BLUE}Standard: $standard gwei \n
${TPUT_GREEN}Slow: $slow gwei${TPUT_RESET}" | column -t
size=$(contract_size $NAME)
echo "Estimated Gas cost for deployment of $NAME: ${TPUT_BOLD}$GAS${TPUT_RESET} units of gas"
echo "Contract Size: ${size} bytes"
echo "Total cost for deployment:"
rapid_cost=$(echo "scale=5; $GAS*$rapid/1000000000" | bc)
fast_cost=$(echo "scale=5; $GAS*$fast/1000000000" | bc)
standard_cost=$(echo "scale=5; $GAS*$standard/1000000000" | bc)
slow_cost=$(echo "scale=5; $GAS*$slow/1000000000" | bc)
echo " \
size=$(contract_size "$NAME")
echo "Estimated Gas cost for deployment of $NAME: ${TPUT_BOLD}$GAS${TPUT_RESET} units of gas"
echo "Contract Size: ${size} bytes"
echo "Total cost for deployment:"
rapid_cost=$(echo "scale=5; $GAS*$rapid" | bc)
fast_cost=$(echo "scale=5; $GAS*$fast" | bc)
standard_cost=$(echo "scale=5; $GAS*$standard" | bc)
slow_cost=$(echo "scale=5; $GAS*$slow" | bc)
echo " \
${TPUT_RED}Rapid: $rapid_cost ETH ${TPUT_RESET} \n
${TPUT_YELLOW}Fast: $fast_cost ETH \n
${TPUT_BLUE}Standard: $standard_cost ETH \n
${TPUT_GREEN}Slow: $slow_cost ETH ${TPUT_RESET}" | column -t
fi
fi
}

contract_size(){
NAME=$1
ARGS=${@:2}
# select the filename and the contract in it
PATTERN=".contracts[\"src/$NAME.sol\"].$NAME"

# get the bytecode from the compiled file
BYTECODE=0x$(jq -r "$PATTERN.evm.bytecode.object" out/dapp.sol.json)
length=$(echo $BYTECODE | wc -m )
echo $(( $length / 2 ))
}
contract_size() {
NAME=$1
ARGS=${@:2}
# select the filename and the contract in it
PATTERN=".contracts[\"src/$NAME.sol\"].$NAME"

# get the bytecode from the compiled file
BYTECODE=0x$(jq -r "$PATTERN.evm.bytecode.object" out/dapp.sol.json)
length=$(echo "$BYTECODE" | wc -m)
echo $(($length / 2))
}
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