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Commit d6cb0e71 authored by Mark Tyneway's avatar Mark Tyneway Committed by Kelvin Fichter
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utils: remove dead code 

This code is no longer required with the new fee scheme.
Delete it from the monorepo.
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go/utils/README.md deleted 100644 → 0
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# utils
This package is meant to hold utilities used by
[Optimistic Ethereum](https://github.com/ethereum-optimism/optimism) written in
Golang.
## Packages
### Fees
Package fees includes helpers for dealing with fees on Optimistic Ethereum
#### `EncodeTxGasLimit(data []byte, l1GasPrice, l2GasLimit, l2GasPrice *big.Int) *big.Int`
Encodes `tx.gasLimit` based on the variables that are used to determine it.
`data` - Calldata of the transaction being sent. This data should *not* include the full signed RLP transaction.
`l1GasPrice` - gas price on L1 in wei
`l2GasLimit` - amount of gas provided for execution in L2. Notably, accounts are charged for execution based on this gasLimit, even if the gasUsed ends up being less.
`l2GasPrice` - gas price on L2 in wei
#### `DecodeL2GasLimit(gasLimit *big.Int) *big.Int`
Accepts the return value of `eth_estimateGas` and decodes the L2 gas limit that
is encoded in the return value. This is the gas limit that is passed to the user
contract within the OVM.
go/utils/fees/rollup_fee.go deleted 100644 → 0
View file @ 13d8a11e
package fees
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/params"
)
// overhead represents the fixed cost of batch submission of a single
// transaction in gas.
const overhead uint64 = 2750
// feeScalar is used to scale the calculations in EncodeL2GasLimit
// to prevent them from being too large
const feeScalar uint64 = 10_000_000
// TxGasPrice is a constant that determines the result of `eth_gasPrice`
// It is scaled upwards by 50%
// tx.gasPrice is hard coded to 1500 * wei and all transactions must set that
// gas price.
const TxGasPrice uint64 = feeScalar + (feeScalar / 2)
// BigTxGasPrice is the L2GasPrice as type big.Int
var BigTxGasPrice = new(big.Int).SetUint64(TxGasPrice)
var bigFeeScalar = new(big.Int).SetUint64(feeScalar)
const tenThousand = 10000
var BigTenThousand = new(big.Int).SetUint64(tenThousand)
// EncodeTxGasLimit computes the `tx.gasLimit` based on the L1/L2 gas prices and
// the L2 gas limit. The L2 gas limit is encoded inside of the lower order bits
// of the number like so: [ | l2GasLimit ]
// [ tx.gaslimit ]
// The lower order bits must be large enough to fit the L2 gas limit, so 10**8
// is chosen. If higher order bits collide with any bits from the L2 gas limit,
// the L2 gas limit will not be able to be decoded.
// An explicit design goal of this scheme was to make the L2 gas limit be human
// readable. The entire number is interpreted as the gas limit when computing
// the fee, so increasing the L2 Gas limit will increase the fee paid.
// The calculation is:
// l1GasLimit = zero_count(data) * 4 + non_zero_count(data) * 16 + overhead
// roundedL2GasLimit = ceilmod(l2GasLimit, 10_000)
// l1Fee = l1GasPrice * l1GasLimit
// l2Fee = l2GasPrice * roundedL2GasLimit
// sum = l1Fee + l2Fee
// scaled = sum / scalar
// rounded = ceilmod(scaled, tenThousand)
// roundedScaledL2GasLimit = roundedL2GasLimit / tenThousand
// result = rounded + roundedScaledL2GasLimit
// Note that for simplicity purposes, only the calldata is passed into this
// function when in reality the RLP encoded transaction should be. The
// additional cost is added to the overhead constant to prevent the need to RLP
// encode transactions during calls to `eth_estimateGas`
func EncodeTxGasLimit(data []byte, l1GasPrice, l2GasLimit, l2GasPrice *big.Int) *big.Int {
l1GasLimit := calculateL1GasLimit(data, overhead)
roundedL2GasLimit := Ceilmod(l2GasLimit, BigTenThousand)
l1Fee := new(big.Int).Mul(l1GasPrice, l1GasLimit)
l2Fee := new(big.Int).Mul(l2GasPrice, roundedL2GasLimit)
sum := new(big.Int).Add(l1Fee, l2Fee)
scaled := new(big.Int).Div(sum, bigFeeScalar)
rounded := Ceilmod(scaled, BigTenThousand)
roundedScaledL2GasLimit := new(big.Int).Div(roundedL2GasLimit, BigTenThousand)
result := new(big.Int).Add(rounded, roundedScaledL2GasLimit)
return result
}
func Ceilmod(a, b *big.Int) *big.Int {
remainder := new(big.Int).Mod(a, b)
if remainder.Cmp(common.Big0) == 0 {
return a
}
sum := new(big.Int).Add(a, b)
rounded := new(big.Int).Sub(sum, remainder)
return rounded
}
// DecodeL2GasLimit decodes the L2 gas limit from an encoded L2 gas limit
func DecodeL2GasLimit(gasLimit *big.Int) *big.Int {
scaled := new(big.Int).Mod(gasLimit, BigTenThousand)
return new(big.Int).Mul(scaled, BigTenThousand)
}
func DecodeL2GasLimitU64(gasLimit uint64) uint64 {
scaled := gasLimit % tenThousand
return scaled * tenThousand
}
// calculateL1GasLimit computes the L1 gasLimit based on the calldata and
// constant sized overhead. The overhead can be decreased as the cost of the
// batch submission goes down via contract optimizations. This will not overflow
// under standard network conditions.
func calculateL1GasLimit(data []byte, overhead uint64) *big.Int {
zeroes, ones := zeroesAndOnes(data)
zeroesCost := zeroes * params.TxDataZeroGas
onesCost := ones * params.TxDataNonZeroGasEIP2028
gasLimit := zeroesCost + onesCost + overhead
return new(big.Int).SetUint64(gasLimit)
}
func zeroesAndOnes(data []byte) (uint64, uint64) {
var zeroes uint64
var ones uint64
for _, byt := range data {
if byt == 0 {
zeroes++
} else {
ones++
}
}
return zeroes, ones
}
go/utils/fees/rollup_fee_test.go deleted 100644 → 0
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package fees
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/params"
)
var l1GasLimitTests = map[string]struct {
data []byte
overhead uint64
expect *big.Int
}{
"simple": {[]byte{}, 0, big.NewInt(0)},
"simple-overhead": {[]byte{}, 10, big.NewInt(10)},
"zeros": {[]byte{0x00, 0x00, 0x00, 0x00}, 10, big.NewInt(26)},
"ones": {[]byte{0x01, 0x02, 0x03, 0x04}, 200, big.NewInt(16*4 + 200)},
}
func TestL1GasLimit(t *testing.T) {
for name, tt := range l1GasLimitTests {
t.Run(name, func(t *testing.T) {
got := calculateL1GasLimit(tt.data, tt.overhead)
if got.Cmp(tt.expect) != 0 {
t.Fatal("Calculated gas limit does not match")
}
})
}
}
var feeTests = map[string]struct {
dataLen int
l1GasPrice uint64
l2GasLimit uint64
l2GasPrice uint64
}{
"simple": {
dataLen: 10,
l1GasPrice: params.GWei,
l2GasLimit: 437118,
l2GasPrice: params.GWei,
},
"zero-l2-gasprice": {
dataLen: 10,
l1GasPrice: params.GWei,
l2GasLimit: 196205,
l2GasPrice: 0,
},
"one-l2-gasprice": {
dataLen: 10,
l1GasPrice: params.GWei,
l2GasLimit: 196205,
l2GasPrice: 1,
},
"zero-l1-gasprice": {
dataLen: 10,
l1GasPrice: 0,
l2GasLimit: 196205,
l2GasPrice: params.GWei,
},
"one-l1-gasprice": {
dataLen: 10,
l1GasPrice: 1,
l2GasLimit: 23255,
l2GasPrice: params.GWei,
},
"zero-gasprices": {
dataLen: 10,
l1GasPrice: 0,
l2GasLimit: 23255,
l2GasPrice: 0,
},
"max-gaslimit": {
dataLen: 10,
l1GasPrice: params.GWei,
l2GasLimit: 99_970_000,
l2GasPrice: params.GWei,
},
"larger-divisor": {
dataLen: 10,
l1GasPrice: 0,
l2GasLimit: 10,
l2GasPrice: 0,
},
}
func TestCalculateRollupFee(t *testing.T) {
for name, tt := range feeTests {
t.Run(name, func(t *testing.T) {
data := make([]byte, tt.dataLen)
l1GasPrice := new(big.Int).SetUint64(tt.l1GasPrice)
l2GasLimit := new(big.Int).SetUint64(tt.l2GasLimit)
l2GasPrice := new(big.Int).SetUint64(tt.l2GasPrice)
fee := EncodeTxGasLimit(data, l1GasPrice, l2GasLimit, l2GasPrice)
decodedGasLimit := DecodeL2GasLimit(fee)
roundedL2GasLimit := Ceilmod(l2GasLimit, BigTenThousand)
if roundedL2GasLimit.Cmp(decodedGasLimit) != 0 {
t.Errorf("rollup fee check failed: expected %d, got %d", l2GasLimit.Uint64(), decodedGasLimit)
}
})
}
}
go/utils/go.mod deleted 100644 → 0
View file @ 13d8a11e
module github.com/ethereum-optimism/optimism/go/utils
go 1.15
require github.com/ethereum/go-ethereum v1.9.10
go/utils/go.sum deleted 100644 → 0
View file @ 13d8a11e
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github.com/Azure/azure-pipeline-go v0.2.2/go.mod h1:4rQ/NZncSvGqNkkOsNpOU1tgoNuIlp9AfUH5G1tvCHc=
github.com/Azure/azure-storage-blob-go v0.7.0/go.mod h1:f9YQKtsG1nMisotuTPpO0tjNuEjKRYAcJU8/ydDI++4=
github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
github.com/Azure/go-autorest/autorest/adal v0.8.0/go.mod h1:Z6vX6WXXuyieHAXwMj0S6HY6e6wcHn37qQMBQlvY3lc=
github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
github.com/Azure/go-autorest/autorest/date v0.2.0/go.mod h1:vcORJHLJEh643/Ioh9+vPmf1Ij9AEBM5FuBIXLmIy0g=
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github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN3SVSiiO77gL2j2ronKKP0syM=
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github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
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github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
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github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/naoina/go-stringutil v0.1.0/go.mod h1:XJ2SJL9jCtBh+P9q5btrd/Ylo8XwT/h1USek5+NqSA0=
github.com/naoina/toml v0.1.2-0.20170918210437-9fafd6967416/go.mod h1:NBIhNtsFMo3G2szEBne+bO4gS192HuIYRqfvOWb4i1E=
github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
github.com/olekukonko/tablewriter v0.0.2-0.20190409134802-7e037d187b0c/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
github.com/pborman/uuid v0.0.0-20170112150404-1b00554d8222/go.mod h1:VyrYX9gd7irzKovcSS6BIIEwPRkP2Wm2m9ufcdFSJ34=
github.com/peterh/liner v1.1.1-0.20190123174540-a2c9a5303de7/go.mod h1:CRroGNssyjTd/qIG2FyxByd2S8JEAZXBl4qUrZf8GS0=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/common v0.0.0-20181113130724-41aa239b4cce/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/tsdb v0.6.2-0.20190402121629-4f204dcbc150/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
github.com/rjeczalik/notify v0.9.1/go.mod h1:rKwnCoCGeuQnwBtTSPL9Dad03Vh2n40ePRrjvIXnJho=
github.com/robertkrimen/otto v0.0.0-20170205013659-6a77b7cbc37d/go.mod h1:xvqspoSXJTIpemEonrMDFq6XzwHYYgToXWj5eRX1OtY=
github.com/rs/cors v0.0.0-20160617231935-a62a804a8a00/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
github.com/rs/xhandler v0.0.0-20160618193221-ed27b6fd6521/go.mod h1:RvLn4FgxWubrpZHtQLnOf6EwhN2hEMusxZOhcW9H3UQ=
github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/spaolacci/murmur3 v1.0.1-0.20190317074736-539464a789e9/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/status-im/keycard-go v0.0.0-20190316090335-8537d3370df4/go.mod h1:RZLeN1LMWmRsyYjvAu+I6Dm9QmlDaIIt+Y+4Kd7Tp+Q=
github.com/steakknife/bloomfilter v0.0.0-20180922174646-6819c0d2a570/go.mod h1:8OR4w3TdeIHIh1g6EMY5p0gVNOovcWC+1vpc7naMuAw=
github.com/steakknife/hamming v0.0.0-20180906055917-c99c65617cd3/go.mod h1:hpGUWaI9xL8pRQCTXQgocU38Qw1g0Us7n5PxxTwTCYU=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/syndtr/goleveldb v1.0.1-0.20190923125748-758128399b1d/go.mod h1:9OrXJhf154huy1nPWmuSrkgjPUtUNhA+Zmy+6AESzuA=
github.com/tyler-smith/go-bip39 v1.0.1-0.20181017060643-dbb3b84ba2ef/go.mod h1:sJ5fKU0s6JVwZjjcUEX2zFOnvq0ASQ2K9Zr6cf67kNs=
github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
github.com/wsddn/go-ecdh v0.0.0-20161211032359-48726bab9208/go.mod h1:IotVbo4F+mw0EzQ08zFqg7pK3FebNXpaMsRy2RT+Ees=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
gopkg.in/olebedev/go-duktape.v3 v3.0.0-20190213234257-ec84240a7772/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
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