/
treasury.go
264 lines (234 loc) · 7.58 KB
/
treasury.go
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// Copyright (c) 2020-2021 The Decred developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package udb
import (
"decred.org/dcrwallet/v4/errors"
"decred.org/dcrwallet/v4/wallet/walletdb"
"github.com/decred/dcrd/blockchain/stake/v5"
"github.com/decred/dcrd/chaincfg/chainhash"
)
var (
tspendPolicyBucketKey = []byte("tspendpolicy") // by tspend hash
treasuryPolicyBucketKey = []byte("treasurypolicy") // by treasury key
vspTspendPolicyBucketKey = []byte("vsptspendpolicy") // by ticket | tspend hash
vspTreasuryPolicyBucketKey = []byte("vsptreasurypolicy") // by ticket | treasury key
)
type VSPTSpend struct {
Ticket, TSpend chainhash.Hash
}
type VSPTreasuryKey struct {
Ticket chainhash.Hash
TreasuryKey string
}
// SetTSpendPolicy sets a tspend vote policy for a specific tspend transaction
// hash.
func SetTSpendPolicy(dbtx walletdb.ReadWriteTx, hash *chainhash.Hash,
policy stake.TreasuryVoteT) error {
b := dbtx.ReadWriteBucket(tspendPolicyBucketKey)
if policy == stake.TreasuryVoteInvalid {
err := b.Delete(hash[:])
if err != nil {
return errors.E(errors.IO, err)
}
return nil
}
return b.Put(hash[:], []byte{byte(policy)})
}
// SetVSPTSpendPolicy sets a tspend vote policy for a specific tspend
// transaction hash for a VSP customer's ticket hash.
func SetVSPTSpendPolicy(dbtx walletdb.ReadWriteTx, ticketHash, tspendHash *chainhash.Hash,
policy stake.TreasuryVoteT) error {
k := make([]byte, 64)
copy(k, ticketHash[:])
copy(k[32:], tspendHash[:])
b := dbtx.ReadWriteBucket(vspTspendPolicyBucketKey)
if policy == stake.TreasuryVoteInvalid {
err := b.Delete(k)
if err != nil {
return errors.E(errors.IO, err)
}
return nil
}
return b.Put(k, []byte{byte(policy)})
}
// TSpendPolicy returns the tspend vote policy for a specific tspend transaction
// hash.
func TSpendPolicy(dbtx walletdb.ReadTx, hash *chainhash.Hash) (stake.TreasuryVoteT, error) {
b := dbtx.ReadBucket(tspendPolicyBucketKey)
v := b.Get(hash[:])
if v == nil {
return stake.TreasuryVoteInvalid, nil
}
if len(v) != 1 {
err := errors.Errorf("invalid length %v for tspend "+
"vote policy", len(v))
return 0, errors.E(errors.IO, err)
}
return stake.TreasuryVoteT(v[0]), nil
}
// VSPTSpendPolicy returns the tspend vote policy for a specific tspend
// transaction hash for a VSP customer's ticket hash.
func VSPTSpendPolicy(dbtx walletdb.ReadTx, ticketHash,
tspendHash *chainhash.Hash) (stake.TreasuryVoteT, error) {
key := make([]byte, 64)
copy(key, ticketHash[:])
copy(key[32:], tspendHash[:])
b := dbtx.ReadBucket(vspTspendPolicyBucketKey)
v := b.Get(key)
if v == nil {
return stake.TreasuryVoteInvalid, nil
}
if len(v) != 1 {
err := errors.Errorf("invalid length %v for tspend "+
"vote policy", len(v))
return 0, errors.E(errors.IO, err)
}
return stake.TreasuryVoteT(v[0]), nil
}
// TSpendPolicies returns all tspend vote policies keyed by a tspend hash.
// Abstaining policies are excluded.
func TSpendPolicies(dbtx walletdb.ReadTx) (map[chainhash.Hash]stake.TreasuryVoteT, error) {
b := dbtx.ReadBucket(tspendPolicyBucketKey)
policies := make(map[chainhash.Hash]stake.TreasuryVoteT)
err := b.ForEach(func(hash, _ []byte) error {
var tspendHash chainhash.Hash
copy(tspendHash[:], hash)
policy, err := TSpendPolicy(dbtx, &tspendHash)
if err != nil {
return err
}
if policy == stake.TreasuryVoteInvalid {
return nil
}
policies[tspendHash] = policy
return nil
})
return policies, err
}
// VSPTSpendPolicies returns all tspend vote policies keyed by a tspend hash and
// a VSP customer's ticket hash. Abstaining policies are excluded.
func VSPTSpendPolicies(dbtx walletdb.ReadTx) (map[VSPTSpend]stake.TreasuryVoteT, error) {
b := dbtx.ReadBucket(vspTspendPolicyBucketKey)
policies := make(map[VSPTSpend]stake.TreasuryVoteT)
err := b.ForEach(func(k, _ []byte) error {
var key VSPTSpend
copy(key.Ticket[:], k)
copy(key.TSpend[:], k[32:])
policy, err := VSPTSpendPolicy(dbtx, &key.Ticket, &key.TSpend)
if err != nil {
return err
}
if policy == stake.TreasuryVoteInvalid {
return nil
}
policies[key] = policy
return nil
})
return policies, err
}
// SetTreasuryKeyPolicy sets a tspend vote policy for a specific Politeia
// instance key.
func SetTreasuryKeyPolicy(dbtx walletdb.ReadWriteTx, pikey []byte,
policy stake.TreasuryVoteT) error {
b := dbtx.ReadWriteBucket(treasuryPolicyBucketKey)
if policy == stake.TreasuryVoteInvalid {
err := b.Delete(pikey)
if err != nil {
return errors.E(errors.IO, err)
}
return nil
}
return b.Put(pikey, []byte{byte(policy)})
}
// SetVSPTreasuryKeyPolicy sets a tspend vote policy for a specific Politeia
// instance key for a VSP customer's ticket.
func SetVSPTreasuryKeyPolicy(dbtx walletdb.ReadWriteTx, ticket *chainhash.Hash,
pikey []byte, policy stake.TreasuryVoteT) error {
k := make([]byte, 0, chainhash.HashSize+len(pikey))
k = append(k, ticket[:]...)
k = append(k, pikey...)
b := dbtx.ReadWriteBucket(vspTreasuryPolicyBucketKey)
if policy == stake.TreasuryVoteInvalid {
err := b.Delete(k)
if err != nil {
return errors.E(errors.IO, err)
}
return nil
}
return b.Put(k, []byte{byte(policy)})
}
// TreasuryKeyPolicy returns the tspend vote policy for a specific Politeia
// instance key.
func TreasuryKeyPolicy(dbtx walletdb.ReadTx, pikey []byte) (stake.TreasuryVoteT, error) {
b := dbtx.ReadBucket(treasuryPolicyBucketKey)
v := b.Get(pikey)
if v == nil {
return stake.TreasuryVoteInvalid, nil
}
if len(v) != 1 {
err := errors.Errorf("invalid length %v for treasury "+
"key policy", len(v))
return 0, errors.E(errors.IO, err)
}
return stake.TreasuryVoteT(v[0]), nil
}
// VSPTreasuryKeyPolicy returns the tspend vote policy for a specific Politeia
// instance key for a VSP customer's ticket.
func VSPTreasuryKeyPolicy(dbtx walletdb.ReadTx, ticket *chainhash.Hash,
pikey []byte) (stake.TreasuryVoteT, error) {
k := make([]byte, 0, chainhash.HashSize+len(pikey))
k = append(k, ticket[:]...)
k = append(k, pikey...)
b := dbtx.ReadBucket(vspTreasuryPolicyBucketKey)
v := b.Get(k)
if v == nil {
return stake.TreasuryVoteInvalid, nil
}
if len(v) != 1 {
err := errors.Errorf("invalid length %v for treasury "+
"key policy", len(v))
return 0, errors.E(errors.IO, err)
}
return stake.TreasuryVoteT(v[0]), nil
}
// TreasuryKeyPolicies returns all tspend vote policies keyed by a Politeia
// instance key. Abstaining policies are excluded.
func TreasuryKeyPolicies(dbtx walletdb.ReadTx) (map[string]stake.TreasuryVoteT, error) {
b := dbtx.ReadBucket(treasuryPolicyBucketKey)
policies := make(map[string]stake.TreasuryVoteT)
err := b.ForEach(func(pikey, _ []byte) error {
policy, err := TreasuryKeyPolicy(dbtx, pikey)
if err != nil {
return err
}
if policy == stake.TreasuryVoteInvalid {
return nil
}
policies[string(pikey)] = policy
return nil
})
return policies, err
}
// VSPTreasuryKeyPolicies returns all tspend vote policies keyed by a Politeia
// instance key for a VSP customer's ticket. Abstaining policies are excluded.
func VSPTreasuryKeyPolicies(dbtx walletdb.ReadTx) (map[VSPTreasuryKey]stake.TreasuryVoteT, error) {
b := dbtx.ReadBucket(vspTreasuryPolicyBucketKey)
policies := make(map[VSPTreasuryKey]stake.TreasuryVoteT)
err := b.ForEach(func(k, _ []byte) error {
var key VSPTreasuryKey
pikey := k[chainhash.HashSize:]
copy(key.Ticket[:], k)
key.TreasuryKey = string(pikey)
policy, err := VSPTreasuryKeyPolicy(dbtx, &key.Ticket, pikey)
if err != nil {
return err
}
if policy == stake.TreasuryVoteInvalid {
return nil
}
policies[key] = policy
return nil
})
return policies, err
}