// putMeta puts a k-v into the meta bucket.
func putMeta(ns walletdb.ReadWriteBucket, key []byte, n int32) error {
bucket := ns.NestedReadWriteBucket(metaBucketName)
err := bucket.Put(key, uint32ToBytes(uint32(n)))
if err != nil {
str := fmt.Sprintf("failed to store meta key '%s'", key)
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}
// updateStakePoolUserTickets updates a database entry for a pool user's tickets.
// The function pulls the current entry in the database, checks to see if the
// ticket is already there, updates it accordingly, or adds it to the list of
// tickets.
func updateStakePoolUserTickets(ns walletdb.ReadWriteBucket, scriptHash [20]byte,
record *PoolTicket) error {
// Fetch the current content of the key.
// Possible buggy behaviour: If deserialization fails,
// we won't detect it here. We assume we're throwing
// ErrPoolUserTicketsNotFound.
oldRecords, _ := fetchStakePoolUserTickets(ns, scriptHash)
// Don't reinsert duplicate records we already have.
if duplicateExistsInUserTickets(record, oldRecords) {
return nil
}
// Does this modify an old record? If so, modify the record
// itself and push. Otherwise, we need to insert a new
// record.
var records []*PoolTicket
preExists, loc := recordExistsInUserTickets(record, oldRecords)
if preExists {
records = oldRecords
records[loc] = record
} else {
// Either create a slice if currently nothing exists for this
// key in the db, or append the entry to the slice.
if oldRecords == nil {
records = make([]*PoolTicket, 1)
records[0] = record
} else {
records = append(oldRecords, record)
}
}
bucket := ns.NestedReadWriteBucket(metaBucketName)
key := make([]byte, stakePoolTicketsPrefixSize+scriptHashSize)
copy(key[0:stakePoolTicketsPrefixSize], stakePoolTicketsPrefix)
copy(key[stakePoolTicketsPrefixSize:stakePoolTicketsPrefixSize+scriptHashSize],
scriptHash[:])
// Write the serialized ticket data keyed by the script.
serializedRecords := serializeUserTickets(records)
err := bucket.Put(key, serializedRecords)
if err != nil {
str := fmt.Sprintf("failed to store pool user ticket records '%x'",
scriptHash)
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}
// updateSStxRecord updates a sstx record in the sstx records bucket.
func updateSStxRecord(ns walletdb.ReadWriteBucket, record *sstxRecord, voteBits stake.VoteBits) error {
bucket := ns.NestedReadWriteBucket(sstxRecordsBucketName)
// Write the serialized txrecord keyed by the tx hash.
serializedSStxRecord, err := serializeSStxRecord(record, voteBits)
if err != nil {
str := fmt.Sprintf("failed to serialize sstxrecord '%s'", record.tx.Sha())
return stakeStoreError(ErrDatabase, str, err)
}
err = bucket.Put(record.tx.Sha().Bytes(), serializedSStxRecord)
if err != nil {
str := fmt.Sprintf("failed to store sstxrecord '%s'", record.tx.Sha())
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}
// updateSStxRecordVoteBits updates an individual ticket's intended voteBits
// which are used to override the default voteBits when voting.
func updateSStxRecordVoteBits(ns walletdb.ReadWriteBucket, hash *chainhash.Hash,
voteBits stake.VoteBits) error {
if len(voteBits.ExtendedBits) > stake.MaxSingleBytePushLength-2 {
str := fmt.Sprintf("voteBitsExt too long (got %v bytes, want max %v)",
len(voteBits.ExtendedBits), stake.MaxSingleBytePushLength-2)
return stakeStoreError(ErrData, str, nil)
}
bucket := ns.NestedReadWriteBucket(sstxRecordsBucketName)
key := hash.Bytes()
val := bucket.Get(key)
if val == nil {
str := fmt.Sprintf("missing sstx record for hash '%s'", hash.String())
return stakeStoreError(ErrSStxNotFound, str, nil)
}
valLen := len(val)
valCopy := make([]byte, valLen, valLen)
copy(valCopy, val)
// Move the cursor to the voteBits position and rewrite it.
curPos := 0
curPos += int64Size
curPos += int32Size
// Write the intended votebits length (uint8).
valCopy[curPos] = byte(int16Size + len(voteBits.ExtendedBits))
curPos += int8Size
// Write the first two bytes for the intended votebits.
byteOrder.PutUint16(valCopy[curPos:curPos+int16Size], voteBits.Bits)
curPos += int16Size
// Copy the remaining data from voteBitsExt.
copy(valCopy[curPos:], voteBits.ExtendedBits[:])
err := bucket.Put(key, valCopy)
if err != nil {
str := fmt.Sprintf("failed to update sstxrecord votebits for '%s'", hash)
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}
// removeStakePoolInvalUserTickets removes the ticket hash from the inval
// ticket bucket.
func removeStakePoolInvalUserTickets(ns walletdb.ReadWriteBucket, scriptHash [20]byte,
record *chainhash.Hash) error {
// Fetch the current content of the key.
// Possible buggy behaviour: If deserialization fails,
// we won't detect it here. We assume we're throwing
// ErrPoolUserInvalTcktsNotFound.
oldRecords, _ := fetchStakePoolUserInvalTickets(ns, scriptHash)
// Don't need to remove records that don't exist.
if !duplicateExistsInInvalTickets(record, oldRecords) {
return nil
}
var newRecords []*chainhash.Hash
for i := range oldRecords {
if record.IsEqual(oldRecords[i]) {
newRecords = append(oldRecords[:i:i], oldRecords[i+1:]...)
}
}
if newRecords == nil {
return nil
}
bucket := ns.NestedReadWriteBucket(metaBucketName)
key := make([]byte, stakePoolInvalidPrefixSize+scriptHashSize)
copy(key[0:stakePoolInvalidPrefixSize], stakePoolInvalidPrefix)
copy(key[stakePoolInvalidPrefixSize:stakePoolInvalidPrefixSize+scriptHashSize],
scriptHash[:])
// Write the serialized invalid user ticket hashes.
serializedRecords := serializeUserInvalTickets(newRecords)
err := bucket.Put(key, serializedRecords)
if err != nil {
str := fmt.Sprintf("failed to store pool user invalid ticket "+
"records '%x'", scriptHash)
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}
// updateStakePoolInvalUserTickets updates a database entry for a pool user's
// invalid tickets. The function pulls the current entry in the database,
// checks to see if the ticket is already there. If it is it returns, otherwise
// it adds it to the list of tickets.
func updateStakePoolInvalUserTickets(ns walletdb.ReadWriteBucket, scriptHash [20]byte,
record *chainhash.Hash) error {
// Fetch the current content of the key.
// Possible buggy behaviour: If deserialization fails,
// we won't detect it here. We assume we're throwing
// ErrPoolUserInvalTcktsNotFound.
oldRecords, _ := fetchStakePoolUserInvalTickets(ns, scriptHash)
// Don't reinsert duplicate records we already have.
if duplicateExistsInInvalTickets(record, oldRecords) {
return nil
}
// Either create a slice if currently nothing exists for this
// key in the db, or append the entry to the slice.
var records []*chainhash.Hash
if oldRecords == nil {
records = make([]*chainhash.Hash, 1)
records[0] = record
} else {
records = append(oldRecords, record)
}
bucket := ns.NestedReadWriteBucket(metaBucketName)
key := make([]byte, stakePoolInvalidPrefixSize+scriptHashSize)
copy(key[0:stakePoolInvalidPrefixSize], stakePoolInvalidPrefix)
copy(key[stakePoolInvalidPrefixSize:stakePoolInvalidPrefixSize+scriptHashSize],
scriptHash[:])
// Write the serialized invalid user ticket hashes.
serializedRecords := serializeUserInvalTickets(records)
err := bucket.Put(key, serializedRecords)
if err != nil {
str := fmt.Sprintf("failed to store pool user invalid ticket "+
"records '%x'", scriptHash)
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}
// updateSSRtxRecord updates an SSRtx record in the SSRtx records bucket.
func updateSSRtxRecord(ns walletdb.ReadWriteBucket, hash *chainhash.Hash,
record *ssrtxRecord) error {
// Fetch the current content of the key.
// Possible buggy behaviour: If deserialization fails,
// we won't detect it here. We assume we're throwing
// ErrSSRtxsNotFound.
oldRecords, _ := fetchSSRtxRecords(ns, hash)
// Don't reinsert records we already have.
if ssrtxRecordExistsInRecords(record, oldRecords) {
return nil
}
bucket := ns.NestedReadWriteBucket(ssrtxRecordsBucketName)
var records []*ssrtxRecord
// Either create a slice if currently nothing exists for this
// key in the db, or append the entry to the slice.
if oldRecords == nil {
records = make([]*ssrtxRecord, 1)
records[0] = record
} else {
records = append(oldRecords, record)
}
// Write the serialized SSRtxs keyed by the sstx hash.
serializedSSRtxsRecords := serializeSSRtxRecords(records)
err := bucket.Put(hash.Bytes(), serializedSSRtxsRecords)
if err != nil {
str := fmt.Sprintf("failed to store ssrtx records '%s'", hash)
return stakeStoreError(ErrDatabase, str, err)
}
return nil
}