mirror of https://github.com/certusone/vouch.git
188 lines
6.3 KiB
Go
188 lines
6.3 KiB
Go
// Copyright © 2020 Attestant Limited.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package wallet
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import (
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eth2client "github.com/attestantio/go-eth2-client"
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"github.com/attestantio/vouch/services/metrics"
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"github.com/pkg/errors"
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"github.com/rs/zerolog"
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)
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type parameters struct {
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logLevel zerolog.Level
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monitor metrics.AccountManagerMonitor
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locations []string
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accountPaths []string
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passphrases [][]byte
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validatorsProvider eth2client.ValidatorsProvider
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slotsPerEpochProvider eth2client.SlotsPerEpochProvider
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beaconProposerDomainProvider eth2client.BeaconProposerDomainProvider
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beaconAttesterDomainProvider eth2client.BeaconAttesterDomainProvider
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randaoDomainProvider eth2client.RANDAODomainProvider
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selectionProofDomainProvider eth2client.SelectionProofDomainProvider
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aggregateAndProofDomainProvider eth2client.AggregateAndProofDomainProvider
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signatureDomainProvider eth2client.SignatureDomainProvider
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}
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// Parameter is the interface for service parameters.
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type Parameter interface {
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apply(*parameters)
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}
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type parameterFunc func(*parameters)
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func (f parameterFunc) apply(p *parameters) {
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f(p)
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}
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// WithLogLevel sets the log level for the module.
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func WithLogLevel(logLevel zerolog.Level) Parameter {
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return parameterFunc(func(p *parameters) {
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p.logLevel = logLevel
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})
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}
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// WithMonitor sets the monitor for the module.
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func WithMonitor(monitor metrics.AccountManagerMonitor) Parameter {
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return parameterFunc(func(p *parameters) {
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p.monitor = monitor
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})
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}
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// WithLocations sets the locations to look for wallets.
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func WithLocations(locations []string) Parameter {
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return parameterFunc(func(p *parameters) {
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p.locations = locations
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})
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}
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// WithAccountPaths sets the accounts paths for which to validate.
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func WithAccountPaths(accountPaths []string) Parameter {
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return parameterFunc(func(p *parameters) {
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p.accountPaths = accountPaths
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})
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}
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// WithPassphrases sets the passphrases to unlock accounts.
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func WithPassphrases(passphrases [][]byte) Parameter {
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return parameterFunc(func(p *parameters) {
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p.passphrases = passphrases
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})
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}
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// WithValidatorsProvider sets the validator status provider.
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func WithValidatorsProvider(provider eth2client.ValidatorsProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.validatorsProvider = provider
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})
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}
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// WithSlotsPerEpochProvider sets the slots per epoch provider.
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func WithSlotsPerEpochProvider(provider eth2client.SlotsPerEpochProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.slotsPerEpochProvider = provider
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})
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}
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// WithBeaconProposerDomainProvider sets the beacon proposer domain provider.
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func WithBeaconProposerDomainProvider(provider eth2client.BeaconProposerDomainProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.beaconProposerDomainProvider = provider
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})
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}
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// WithBeaconAttesterDomainProvider sets the beacon attester domain provider.
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func WithBeaconAttesterDomainProvider(provider eth2client.BeaconAttesterDomainProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.beaconAttesterDomainProvider = provider
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})
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}
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// WithRANDAODomainProvider sets the RANDAO domain provider.
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func WithRANDAODomainProvider(provider eth2client.RANDAODomainProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.randaoDomainProvider = provider
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})
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}
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// WithSelectionProofDomainProvider sets the RANDAO domain provider.
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func WithSelectionProofDomainProvider(provider eth2client.SelectionProofDomainProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.selectionProofDomainProvider = provider
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})
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}
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// WithAggregateAndProofDomainProvider sets the aggregate and proof domain provider.
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func WithAggregateAndProofDomainProvider(provider eth2client.AggregateAndProofDomainProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.aggregateAndProofDomainProvider = provider
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})
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}
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// WithSignatureDomainProvider sets the signature domain provider.
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func WithSignatureDomainProvider(provider eth2client.SignatureDomainProvider) Parameter {
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return parameterFunc(func(p *parameters) {
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p.signatureDomainProvider = provider
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})
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}
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// parseAndCheckParameters parses and checks parameters to ensure that mandatory parameters are present and correct.
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func parseAndCheckParameters(params ...Parameter) (*parameters, error) {
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parameters := parameters{
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logLevel: zerolog.GlobalLevel(),
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}
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for _, p := range params {
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if params != nil {
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p.apply(¶meters)
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}
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}
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if parameters.monitor == nil {
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return nil, errors.New("no monitor specified")
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}
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if parameters.accountPaths == nil {
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return nil, errors.New("no account paths specified")
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}
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if len(parameters.passphrases) == 0 {
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return nil, errors.New("no passphrases specified")
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}
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if parameters.validatorsProvider == nil {
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return nil, errors.New("no validators provider specified")
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}
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if parameters.slotsPerEpochProvider == nil {
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return nil, errors.New("no slots per epoch provider specified")
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}
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if parameters.beaconProposerDomainProvider == nil {
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return nil, errors.New("no beacon proposer domain provider specified")
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}
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if parameters.beaconAttesterDomainProvider == nil {
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return nil, errors.New("no beacon attester domain provider specified")
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}
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if parameters.randaoDomainProvider == nil {
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return nil, errors.New("no RANDAO domain provider specified")
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}
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if parameters.selectionProofDomainProvider == nil {
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return nil, errors.New("no selection proof domain provider specified")
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}
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if parameters.aggregateAndProofDomainProvider == nil {
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return nil, errors.New("no aggregate and proof domain provider specified")
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}
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if parameters.signatureDomainProvider == nil {
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return nil, errors.New("no signature domain provider specified")
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}
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return ¶meters, nil
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}
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