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generate.go
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generate.go
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// Copyright © 2020 Attestant Limited.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package standard
import (
"context"
"time"
"github.com/bliiitz/dirk/core"
"github.com/bliiitz/dirk/rules"
"github.com/bliiitz/dirk/services/checker"
"github.com/bliiitz/dirk/services/ruler"
"github.com/pkg/errors"
e2wallet "github.com/wealdtech/go-eth2-wallet"
)
// Generate generates an account.
func (s *Service) Generate(ctx context.Context,
credentials *checker.Credentials,
account string,
passphrase []byte,
signingThreshold uint32,
participants uint32,
) (
core.Result,
[]byte,
[]*core.Endpoint,
error,
) {
started := time.Now()
if credentials == nil {
log.Error().Msg("No credentials supplied")
return core.ResultFailed, nil, nil, nil
}
log := log.With().
Str("request_id", credentials.RequestID).
Str("client", credentials.Client).
Str("account", account).
Str("action", "Generate").
Logger()
log.Trace().Msg("Request received")
checkRes := s.checkAccess(ctx, credentials, account, ruler.ActionCreateAccount)
if checkRes != core.ResultSucceeded {
s.monitor.AccountManagerCompleted(started, "generate", checkRes)
return checkRes, nil, nil, nil
}
// Check parameters.
if participants == 0 {
s.monitor.AccountManagerCompleted(started, "generate", core.ResultDenied)
return core.ResultDenied, nil, nil, errors.New("invalid number of participants")
}
if participants < signingThreshold {
s.monitor.AccountManagerCompleted(started, "generate", core.ResultDenied)
return core.ResultDenied, nil, nil, errors.New("invalid signing threshold")
}
walletName, accountName, err := e2wallet.WalletAndAccountNames(account)
if err != nil {
s.monitor.AccountManagerCompleted(started, "generate", core.ResultDenied)
return core.ResultDenied, nil, nil, errors.Wrap(err, "invalid account name")
}
// Confirm approval via rules.
rulesData := []*ruler.RulesData{
{
WalletName: walletName,
AccountName: accountName,
Data: &rules.CreateAccountData{},
},
}
results := s.ruler.RunRules(ctx, credentials, ruler.ActionCreateAccount, rulesData)
switch results[0] {
case rules.DENIED:
s.monitor.AccountManagerCompleted(started, "generate", core.ResultDenied)
return core.ResultDenied, nil, nil, nil
case rules.FAILED:
s.monitor.AccountManagerCompleted(started, "generate", core.ResultFailed)
return core.ResultFailed, nil, nil, errors.New("rules check failed")
}
// Generate it.
pubKey, endpoints, err := s.process.OnGenerate(ctx, credentials, account, passphrase, signingThreshold, participants)
if err != nil {
s.monitor.AccountManagerCompleted(started, "generate", core.ResultSucceeded)
return core.ResultFailed, nil, nil, errors.Wrap(err, "failed to generate account")
}
s.monitor.AccountManagerCompleted(started, "generate", core.ResultSucceeded)
return core.ResultSucceeded, pubKey, endpoints, nil
}