/
ledger.go
285 lines (254 loc) · 7.59 KB
/
ledger.go
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package history
import (
"context"
"encoding/hex"
"fmt"
"sort"
"time"
sq "github.com/Masterminds/squirrel"
"github.com/guregu/null"
"github.com/diamcircle/go/services/aurora/internal/db2"
"github.com/diamcircle/go/services/aurora/internal/toid"
"github.com/diamcircle/go/support/errors"
"github.com/diamcircle/go/xdr"
)
// LedgerBySequence loads the single ledger at `seq` into `dest`
func (q *Q) LedgerBySequence(ctx context.Context, dest interface{}, seq int32) error {
sql := selectLedger.
Limit(1).
Where("sequence = ?", seq)
return q.Get(ctx, dest, sql)
}
// Ledgers provides a helper to filter rows from the `history_ledgers` table
// with pre-defined filters. See `LedgersQ` methods for the available filters.
func (q *Q) Ledgers() *LedgersQ {
return &LedgersQ{
parent: q,
sql: selectLedger,
}
}
// LedgersBySequence loads the a set of ledgers identified by the sequences
// `seqs` into `dest`.
func (q *Q) LedgersBySequence(ctx context.Context, dest interface{}, seqs ...int32) error {
if len(seqs) == 0 {
return errors.New("no sequence arguments provided")
}
in := fmt.Sprintf("sequence IN (%s)", sq.Placeholders(len(seqs)))
whereArgs := make([]interface{}, len(seqs))
for i, s := range seqs {
whereArgs[i] = s
}
sql := selectLedger.Where(in, whereArgs...)
return q.Select(ctx, dest, sql)
}
// LedgerCapacityUsageStats returns ledger capacity stats for the last 5 ledgers.
// Currently, we hard code the query to return the last 5 ledgers.
// TODO: make the number of ledgers configurable.
func (q *Q) LedgerCapacityUsageStats(ctx context.Context, currentSeq int32, dest *LedgerCapacityUsageStats) error {
const ledgers int32 = 5
return q.GetRaw(ctx, dest, `
SELECT ROUND(SUM(CAST(operation_count as decimal))/SUM(max_tx_set_size), 2) as ledger_capacity_usage FROM
(SELECT
hl.sequence, COALESCE(SUM(ht.operation_count), 0) as operation_count, hl.max_tx_set_size
FROM history_ledgers hl
LEFT JOIN history_transactions ht ON ht.ledger_sequence = hl.sequence
WHERE hl.sequence > $1 AND hl.sequence <= $2
GROUP BY hl.sequence, hl.max_tx_set_size) as a
`, currentSeq-ledgers, currentSeq)
}
// Page specifies the paging constraints for the query being built by `q`.
func (q *LedgersQ) Page(page db2.PageQuery) *LedgersQ {
if q.Err != nil {
return q
}
q.sql, q.Err = page.ApplyTo(q.sql, "hl.id")
return q
}
// Select loads the results of the query specified by `q` into `dest`.
func (q *LedgersQ) Select(ctx context.Context, dest interface{}) error {
if q.Err != nil {
return q.Err
}
q.Err = q.parent.Select(ctx, dest, q.sql)
return q.Err
}
// QLedgers defines ingestion ledger related queries.
type QLedgers interface {
InsertLedger(
ctx context.Context,
ledger xdr.LedgerHeaderHistoryEntry,
successTxsCount int,
failedTxsCount int,
opCount int,
txSetOpCount int,
ingestVersion int,
) (int64, error)
}
// InsertLedger creates a row in the history_ledgers table.
// Returns number of rows affected and error.
func (q *Q) InsertLedger(ctx context.Context,
ledger xdr.LedgerHeaderHistoryEntry,
successTxsCount int,
failedTxsCount int,
opCount int,
txSetOpCount int,
ingestVersion int,
) (int64, error) {
m, err := ledgerHeaderToMap(
ledger,
successTxsCount,
failedTxsCount,
opCount,
txSetOpCount,
ingestVersion,
)
if err != nil {
return 0, err
}
sql := sq.Insert("history_ledgers").SetMap(m)
result, err := q.Exec(ctx, sql)
if err != nil {
return 0, err
}
return result.RowsAffected()
}
// GetLedgerGaps obtains ingestion gaps in the history_ledgers table.
// Returns the gaps and error.
func (q *Q) GetLedgerGaps(ctx context.Context) ([]LedgerRange, error) {
var gaps []LedgerRange
query := `
SELECT sequence + 1 AS start,
next_number - 1 AS end
FROM (
SELECT sequence,
LEAD(sequence) OVER (ORDER BY sequence) AS next_number
FROM history_ledgers
) number
WHERE sequence + 1 <> next_number;`
if err := q.SelectRaw(ctx, &gaps, query); err != nil {
return nil, err
}
sort.Slice(gaps, func(i, j int) bool {
return gaps[i].StartSequence < gaps[j].StartSequence
})
return gaps, nil
}
func max(a, b uint32) uint32 {
if a > b {
return a
}
return b
}
func min(a, b uint32) uint32 {
if a > b {
return b
}
return a
}
// GetLedgerGapsInRange obtains ingestion gaps in the history_ledgers table within the given range.
// Returns the gaps and error.
func (q *Q) GetLedgerGapsInRange(ctx context.Context, start, end uint32) ([]LedgerRange, error) {
var result []LedgerRange
var oldestLedger, latestLedger uint32
if err := q.ElderLedger(ctx, &oldestLedger); err != nil {
return nil, errors.Wrap(err, "Could not query elder ledger")
} else if oldestLedger == 0 {
return []LedgerRange{{
StartSequence: start,
EndSequence: end,
}}, nil
}
if err := q.LatestLedger(ctx, &latestLedger); err != nil {
return nil, errors.Wrap(err, "Could not query latest ledger")
}
if start < oldestLedger {
result = append(result, LedgerRange{
StartSequence: start,
EndSequence: min(end, oldestLedger-1),
})
}
if end <= oldestLedger {
return result, nil
}
gaps, err := q.GetLedgerGaps(ctx)
if err != nil {
return nil, err
}
for _, gap := range gaps {
if gap.EndSequence < start {
continue
}
if gap.StartSequence > end {
break
}
result = append(result, LedgerRange{
StartSequence: max(gap.StartSequence, start),
EndSequence: min(gap.EndSequence, end),
})
}
if latestLedger < end {
result = append(result, LedgerRange{
StartSequence: max(latestLedger+1, start),
EndSequence: end,
})
}
return result, nil
}
func ledgerHeaderToMap(
ledger xdr.LedgerHeaderHistoryEntry,
successTxsCount int,
failedTxsCount int,
opCount int,
txSetOpCount int,
importerVersion int,
) (map[string]interface{}, error) {
ledgerHeaderBase64, err := xdr.MarshalBase64(ledger.Header)
if err != nil {
return nil, err
}
closeTime := time.Unix(int64(ledger.Header.ScpValue.CloseTime), 0).UTC()
return map[string]interface{}{
"importer_version": importerVersion,
"id": toid.New(int32(ledger.Header.LedgerSeq), 0, 0).ToInt64(),
"sequence": ledger.Header.LedgerSeq,
"ledger_hash": hex.EncodeToString(ledger.Hash[:]),
"previous_ledger_hash": null.NewString(hex.EncodeToString(ledger.Header.PreviousLedgerHash[:]), ledger.Header.LedgerSeq > 1),
"total_coins": ledger.Header.TotalCoins,
"fee_pool": ledger.Header.FeePool,
"base_fee": ledger.Header.BaseFee,
"base_reserve": ledger.Header.BaseReserve,
"max_tx_set_size": ledger.Header.MaxTxSetSize,
"closed_at": closeTime,
"created_at": time.Now().UTC(),
"updated_at": time.Now().UTC(),
"transaction_count": successTxsCount,
"successful_transaction_count": successTxsCount,
"failed_transaction_count": failedTxsCount,
"operation_count": opCount,
"tx_set_operation_count": txSetOpCount,
"protocol_version": ledger.Header.LedgerVersion,
"ledger_header": ledgerHeaderBase64,
}, nil
}
var selectLedger = sq.Select(
"hl.id",
"hl.sequence",
"hl.importer_version",
"hl.ledger_hash",
"hl.previous_ledger_hash",
"hl.transaction_count",
"hl.successful_transaction_count",
"hl.failed_transaction_count",
"hl.operation_count",
"hl.tx_set_operation_count",
"hl.closed_at",
"hl.created_at",
"hl.updated_at",
"hl.total_coins",
"hl.fee_pool",
"hl.base_fee",
"hl.base_reserve",
"hl.max_tx_set_size",
"hl.protocol_version",
"hl.ledger_header",
).From("history_ledgers hl")