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gracefulexit.go
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gracefulexit.go
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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package satellitedb
import (
"bytes"
"context"
"database/sql"
"errors"
"sort"
"time"
"github.com/zeebo/errs"
"storj.io/common/storj"
"storj.io/common/uuid"
"storj.io/private/dbutil"
"storj.io/private/dbutil/pgutil"
"storj.io/private/tagsql"
"storj.io/storj/satellite/gracefulexit"
"storj.io/storj/satellite/metabase"
"storj.io/storj/satellite/satellitedb/dbx"
)
type gracefulexitDB struct {
db *satelliteDB
}
const (
deleteExitProgressBatchSize = 1000
)
// IncrementProgress increments transfer stats for a node.
func (db *gracefulexitDB) IncrementProgress(ctx context.Context, nodeID storj.NodeID, bytes int64, successfulTransfers int64, failedTransfers int64) (err error) {
defer mon.Task()(&ctx)(&err)
statement := db.db.Rebind(
`INSERT INTO graceful_exit_progress (node_id, bytes_transferred, pieces_transferred, pieces_failed, updated_at) VALUES (?, ?, ?, ?, ?)
ON CONFLICT(node_id)
DO UPDATE SET bytes_transferred = graceful_exit_progress.bytes_transferred + excluded.bytes_transferred,
pieces_transferred = graceful_exit_progress.pieces_transferred + excluded.pieces_transferred,
pieces_failed = graceful_exit_progress.pieces_failed + excluded.pieces_failed,
updated_at = excluded.updated_at;`,
)
now := time.Now().UTC()
_, err = db.db.ExecContext(ctx, statement, nodeID, bytes, successfulTransfers, failedTransfers, now)
if err != nil {
return Error.Wrap(err)
}
return nil
}
// GetProgress gets a graceful exit progress entry.
func (db *gracefulexitDB) GetProgress(ctx context.Context, nodeID storj.NodeID) (_ *gracefulexit.Progress, err error) {
defer mon.Task()(&ctx)(&err)
dbxProgress, err := db.db.Get_GracefulExitProgress_By_NodeId(ctx, dbx.GracefulExitProgress_NodeId(nodeID.Bytes()))
if errors.Is(err, sql.ErrNoRows) {
return nil, gracefulexit.ErrNodeNotFound.Wrap(err)
} else if err != nil {
return nil, Error.Wrap(err)
}
nID, err := storj.NodeIDFromBytes(dbxProgress.NodeId)
if err != nil {
return nil, Error.Wrap(err)
}
progress := &gracefulexit.Progress{
NodeID: nID,
BytesTransferred: dbxProgress.BytesTransferred,
PiecesTransferred: dbxProgress.PiecesTransferred,
PiecesFailed: dbxProgress.PiecesFailed,
UpdatedAt: dbxProgress.UpdatedAt,
}
return progress, Error.Wrap(err)
}
// Enqueue batch inserts graceful exit transfer queue entries if it does not exist.
func (db *gracefulexitDB) Enqueue(ctx context.Context, items []gracefulexit.TransferQueueItem, batchSize int) (err error) {
defer mon.Task()(&ctx)(&err)
sort.Slice(items, func(i, k int) bool {
compare := bytes.Compare(items[i].NodeID.Bytes(), items[k].NodeID.Bytes())
if compare == 0 {
compare = bytes.Compare(items[i].StreamID[:], items[k].StreamID[:])
if compare == 0 {
return items[i].Position.Encode() < items[k].Position.Encode()
}
return compare < 0
}
return compare < 0
})
for i := 0; i < len(items); i += batchSize {
lowerBound := i
upperBound := lowerBound + batchSize
if upperBound > len(items) {
upperBound = len(items)
}
var nodeIDs []storj.NodeID
var streamIds [][]byte
var positions []int64
var pieceNums []int32
var rootPieceIDs [][]byte
var durabilities []float64
for _, item := range items[lowerBound:upperBound] {
item := item
nodeIDs = append(nodeIDs, item.NodeID)
streamIds = append(streamIds, item.StreamID[:])
positions = append(positions, int64(item.Position.Encode()))
pieceNums = append(pieceNums, item.PieceNum)
rootPieceIDs = append(rootPieceIDs, item.RootPieceID.Bytes())
durabilities = append(durabilities, item.DurabilityRatio)
}
_, err = db.db.ExecContext(ctx, db.db.Rebind(`
INSERT INTO graceful_exit_segment_transfer_queue (
node_id, stream_id, position, piece_num,
root_piece_id, durability_ratio, queued_at
) SELECT
unnest($1::bytea[]), unnest($2::bytea[]), unnest($3::int8[]),
unnest($4::int4[]), unnest($5::bytea[]), unnest($6::float8[]),
$7
ON CONFLICT DO NOTHING;`), pgutil.NodeIDArray(nodeIDs), pgutil.ByteaArray(streamIds), pgutil.Int8Array(positions),
pgutil.Int4Array(pieceNums), pgutil.ByteaArray(rootPieceIDs), pgutil.Float8Array(durabilities),
time.Now().UTC())
if err != nil {
return Error.Wrap(err)
}
}
return nil
}
// UpdateTransferQueueItem creates a graceful exit transfer queue entry.
func (db *gracefulexitDB) UpdateTransferQueueItem(ctx context.Context, item gracefulexit.TransferQueueItem) (err error) {
defer mon.Task()(&ctx)(&err)
update := dbx.GracefulExitSegmentTransfer_Update_Fields{
DurabilityRatio: dbx.GracefulExitSegmentTransfer_DurabilityRatio(item.DurabilityRatio),
LastFailedCode: dbx.GracefulExitSegmentTransfer_LastFailedCode_Raw(item.LastFailedCode),
FailedCount: dbx.GracefulExitSegmentTransfer_FailedCount_Raw(item.FailedCount),
}
if item.RequestedAt != nil {
update.RequestedAt = dbx.GracefulExitSegmentTransfer_RequestedAt_Raw(item.RequestedAt)
}
if item.LastFailedAt != nil {
update.LastFailedAt = dbx.GracefulExitSegmentTransfer_LastFailedAt_Raw(item.LastFailedAt)
}
if item.FinishedAt != nil {
update.FinishedAt = dbx.GracefulExitSegmentTransfer_FinishedAt_Raw(item.FinishedAt)
}
return db.db.UpdateNoReturn_GracefulExitSegmentTransfer_By_NodeId_And_StreamId_And_Position_And_PieceNum(ctx,
dbx.GracefulExitSegmentTransfer_NodeId(item.NodeID.Bytes()),
dbx.GracefulExitSegmentTransfer_StreamId(item.StreamID[:]),
dbx.GracefulExitSegmentTransfer_Position(item.Position.Encode()),
dbx.GracefulExitSegmentTransfer_PieceNum(int(item.PieceNum)),
update,
)
}
// DeleteTransferQueueItem deletes a graceful exit transfer queue entry.
func (db *gracefulexitDB) DeleteTransferQueueItem(ctx context.Context, nodeID storj.NodeID, streamID uuid.UUID, position metabase.SegmentPosition, pieceNum int32) (err error) {
defer mon.Task()(&ctx)(&err)
_, err = db.db.Delete_GracefulExitSegmentTransfer_By_NodeId_And_StreamId_And_Position_And_PieceNum(ctx,
dbx.GracefulExitSegmentTransfer_NodeId(nodeID.Bytes()),
dbx.GracefulExitSegmentTransfer_StreamId(streamID[:]),
dbx.GracefulExitSegmentTransfer_Position(position.Encode()), dbx.GracefulExitSegmentTransfer_PieceNum(int(pieceNum)))
return Error.Wrap(err)
}
// DeleteTransferQueueItem deletes a graceful exit transfer queue entries by nodeID.
func (db *gracefulexitDB) DeleteTransferQueueItems(ctx context.Context, nodeID storj.NodeID) (err error) {
defer mon.Task()(&ctx)(&err)
_, err = db.db.Delete_GracefulExitSegmentTransfer_By_NodeId(ctx, dbx.GracefulExitSegmentTransfer_NodeId(nodeID.Bytes()))
return Error.Wrap(err)
}
// DeleteFinishedTransferQueueItem deletes finished graceful exit transfer queue entries by nodeID.
func (db *gracefulexitDB) DeleteFinishedTransferQueueItems(ctx context.Context, nodeID storj.NodeID) (err error) {
defer mon.Task()(&ctx)(&err)
_, err = db.db.Delete_GracefulExitSegmentTransfer_By_NodeId_And_FinishedAt_IsNot_Null(ctx, dbx.GracefulExitSegmentTransfer_NodeId(nodeID.Bytes()))
return Error.Wrap(err)
}
// DeleteAllFinishedTransferQueueItems deletes all graceful exit transfer
// queue items whose nodes have finished the exit before the indicated time
// returning the total number of deleted items.
func (db *gracefulexitDB) DeleteAllFinishedTransferQueueItems(
ctx context.Context, before time.Time, asOfSystemInterval time.Duration, batchSize int) (_ int64, err error) {
defer mon.Task()(&ctx)(&err)
switch db.db.impl {
case dbutil.Postgres:
statement := `
DELETE FROM graceful_exit_segment_transfer_queue
WHERE node_id IN (
SELECT node_id FROM graceful_exit_segment_transfer_queue INNER JOIN nodes
ON graceful_exit_segment_transfer_queue.node_id = nodes.id
WHERE nodes.exit_finished_at IS NOT NULL
AND nodes.exit_finished_at < $1
)`
res, err := db.db.ExecContext(ctx, statement, before)
if err != nil {
return 0, Error.Wrap(err)
}
count, err := res.RowsAffected()
if err != nil {
return 0, Error.Wrap(err)
}
return count, nil
case dbutil.Cockroach:
nodesQuery := `
SELECT id
FROM nodes
` + db.db.impl.AsOfSystemInterval(asOfSystemInterval) + `
WHERE exit_finished_at IS NOT NULL
AND exit_finished_at < $1
LIMIT $2 OFFSET $3
`
deleteStmt := `
DELETE FROM graceful_exit_segment_transfer_queue
WHERE node_id = $1
LIMIT $2
`
var (
deleteCount int64
offset int
)
for {
var nodeIDs storj.NodeIDList
deleteItems := func() (int64, error) {
// Select exited nodes
rows, err := db.db.QueryContext(ctx, nodesQuery, before, batchSize, offset)
if err != nil {
return deleteCount, Error.Wrap(err)
}
defer func() { err = errs.Combine(err, rows.Close()) }()
count := 0
for rows.Next() {
var id storj.NodeID
if err = rows.Scan(&id); err != nil {
return deleteCount, Error.Wrap(err)
}
nodeIDs = append(nodeIDs, id)
count++
}
if count == batchSize {
offset += count
} else {
offset = -1 // indicates that there aren't more nodes to query
}
for _, id := range nodeIDs {
for {
res, err := db.db.ExecContext(ctx, deleteStmt, id.Bytes(), batchSize)
if err != nil {
return deleteCount, Error.Wrap(err)
}
count, err := res.RowsAffected()
if err != nil {
return deleteCount, Error.Wrap(err)
}
deleteCount += count
if count < int64(batchSize) {
break
}
}
}
return deleteCount, nil
}
deleteCount, err = deleteItems()
if err != nil {
return deleteCount, err
}
// when offset is negative means that we have get already all the nodes
// which have exited
if offset < 0 {
break
}
}
return deleteCount, nil
}
return 0, Error.New("unsupported implementation: %s", db.db.impl)
}
// DeleteFinishedExitProgress deletes exit progress entries for nodes that
// finished exiting before the indicated time, returns number of deleted entries.
func (db *gracefulexitDB) DeleteFinishedExitProgress(
ctx context.Context, before time.Time, asOfSystemInterval time.Duration) (_ int64, err error) {
defer mon.Task()(&ctx)(&err)
finishedNodes, err := db.GetFinishedExitNodes(ctx, before, asOfSystemInterval)
if err != nil {
return 0, err
}
return db.DeleteBatchExitProgress(ctx, finishedNodes)
}
// GetFinishedExitNodes gets nodes that are marked having finished graceful exit before a given time.
func (db *gracefulexitDB) GetFinishedExitNodes(ctx context.Context, before time.Time, asOfSystemInterval time.Duration) (finishedNodes []storj.NodeID, err error) {
defer mon.Task()(&ctx)(&err)
stmt := `
SELECT id
FROM nodes
` + db.db.impl.AsOfSystemInterval(asOfSystemInterval) + `
WHERE exit_finished_at IS NOT NULL
AND exit_finished_at < ?
`
rows, err := db.db.Query(ctx, db.db.Rebind(stmt), before.UTC())
if err != nil {
return nil, Error.Wrap(err)
}
defer func() {
err = Error.Wrap(errs.Combine(err, rows.Close()))
}()
for rows.Next() {
var id storj.NodeID
err = rows.Scan(&id)
if err != nil {
return nil, Error.Wrap(err)
}
finishedNodes = append(finishedNodes, id)
}
return finishedNodes, Error.Wrap(rows.Err())
}
// DeleteBatchExitProgress batch deletes from exit progress. This is separate from
// getting the node IDs because the combined query is slow in CRDB. It's safe to do
// separately because if nodes are deleted between the get and delete, it doesn't
// affect correctness.
func (db *gracefulexitDB) DeleteBatchExitProgress(ctx context.Context, nodeIDs []storj.NodeID) (deleted int64, err error) {
defer mon.Task()(&ctx)(&err)
stmt := `DELETE FROM graceful_exit_progress
WHERE node_id = ANY($1)`
for len(nodeIDs) > 0 {
numToSubmit := len(nodeIDs)
if numToSubmit > deleteExitProgressBatchSize {
numToSubmit = deleteExitProgressBatchSize
}
nodesToSubmit := nodeIDs[:numToSubmit]
res, err := db.db.ExecContext(ctx, stmt, pgutil.NodeIDArray(nodesToSubmit))
if err != nil {
return deleted, Error.Wrap(err)
}
count, err := res.RowsAffected()
if err != nil {
return deleted, Error.Wrap(err)
}
deleted += count
nodeIDs = nodeIDs[numToSubmit:]
}
return deleted, Error.Wrap(err)
}
// GetTransferQueueItem gets a graceful exit transfer queue entry.
func (db *gracefulexitDB) GetTransferQueueItem(ctx context.Context, nodeID storj.NodeID, streamID uuid.UUID, position metabase.SegmentPosition, pieceNum int32) (_ *gracefulexit.TransferQueueItem, err error) {
defer mon.Task()(&ctx)(&err)
dbxTransferQueue, err := db.db.Get_GracefulExitSegmentTransfer_By_NodeId_And_StreamId_And_Position_And_PieceNum(ctx,
dbx.GracefulExitSegmentTransfer_NodeId(nodeID.Bytes()),
dbx.GracefulExitSegmentTransfer_StreamId(streamID[:]),
dbx.GracefulExitSegmentTransfer_Position(position.Encode()),
dbx.GracefulExitSegmentTransfer_PieceNum(int(pieceNum)))
if err != nil {
return nil, Error.Wrap(err)
}
transferQueueItem, err := dbxSegmentTransferToTransferQueueItem(dbxTransferQueue)
if err != nil {
return nil, Error.Wrap(err)
}
return transferQueueItem, Error.Wrap(err)
}
// GetIncomplete gets incomplete graceful exit transfer queue entries ordered by durability ratio and queued date ascending.
func (db *gracefulexitDB) GetIncomplete(ctx context.Context, nodeID storj.NodeID, limit int, offset int64) (_ []*gracefulexit.TransferQueueItem, err error) {
defer mon.Task()(&ctx)(&err)
sql := `
SELECT
node_id, stream_id, position,
piece_num, root_piece_id, durability_ratio,
queued_at, requested_at, last_failed_at,
last_failed_code, failed_count, finished_at,
order_limit_send_count
FROM graceful_exit_segment_transfer_queue
WHERE node_id = ?
AND finished_at is NULL
ORDER BY durability_ratio asc, queued_at asc LIMIT ? OFFSET ?`
rows, err := db.db.Query(ctx, db.db.Rebind(sql), nodeID.Bytes(), limit, offset)
if err != nil {
return nil, Error.Wrap(err)
}
defer func() { err = errs.Combine(err, rows.Close()) }()
transferQueueItemRows, err := scanRows(rows)
if err != nil {
return nil, Error.Wrap(err)
}
return transferQueueItemRows, nil
}
// GetIncompleteNotFailed gets incomplete graceful exit transfer queue entries that haven't failed, ordered by durability ratio and queued date ascending.
func (db *gracefulexitDB) GetIncompleteNotFailed(ctx context.Context, nodeID storj.NodeID, limit int, offset int64) (_ []*gracefulexit.TransferQueueItem, err error) {
defer mon.Task()(&ctx)(&err)
sql := `
SELECT
node_id, stream_id, position,
piece_num, root_piece_id, durability_ratio,
queued_at, requested_at, last_failed_at,
last_failed_code, failed_count, finished_at,
order_limit_send_count
FROM graceful_exit_segment_transfer_queue
WHERE node_id = ?
AND finished_at is NULL
AND last_failed_at is NULL
ORDER BY durability_ratio asc, queued_at asc LIMIT ? OFFSET ?`
rows, err := db.db.Query(ctx, db.db.Rebind(sql), nodeID.Bytes(), limit, offset)
if err != nil {
return nil, Error.Wrap(err)
}
defer func() { err = errs.Combine(err, rows.Close()) }()
transferQueueItemRows, err := scanRows(rows)
if err != nil {
return nil, Error.Wrap(err)
}
return transferQueueItemRows, nil
}
// GetIncompleteNotFailed gets incomplete graceful exit transfer queue entries that have failed <= maxFailures times, ordered by durability ratio and queued date ascending.
func (db *gracefulexitDB) GetIncompleteFailed(ctx context.Context, nodeID storj.NodeID, maxFailures int, limit int, offset int64) (_ []*gracefulexit.TransferQueueItem, err error) {
defer mon.Task()(&ctx)(&err)
sql := `
SELECT
node_id, stream_id, position,
piece_num, root_piece_id, durability_ratio,
queued_at, requested_at, last_failed_at,
last_failed_code, failed_count, finished_at,
order_limit_send_count
FROM graceful_exit_segment_transfer_queue
WHERE node_id = ?
AND finished_at IS NULL
AND last_failed_at IS NOT NULL
AND failed_count < ?
ORDER BY durability_ratio asc, queued_at asc LIMIT ? OFFSET ?`
rows, err := db.db.Query(ctx, db.db.Rebind(sql), nodeID.Bytes(), maxFailures, limit, offset)
if err != nil {
return nil, Error.Wrap(err)
}
defer func() { err = errs.Combine(err, rows.Close()) }()
transferQueueItemRows, err := scanRows(rows)
if err != nil {
return nil, Error.Wrap(err)
}
return transferQueueItemRows, nil
}
// IncrementOrderLimitSendCount increments the number of times a node has been sent an order limit for transferring.
func (db *gracefulexitDB) IncrementOrderLimitSendCount(ctx context.Context, nodeID storj.NodeID, streamID uuid.UUID, position metabase.SegmentPosition, pieceNum int32) (err error) {
defer mon.Task()(&ctx)(&err)
sql := `UPDATE graceful_exit_segment_transfer_queue SET order_limit_send_count = graceful_exit_segment_transfer_queue.order_limit_send_count + 1
WHERE node_id = ?
AND stream_id = ?
AND position = ?
AND piece_num = ?`
_, err = db.db.ExecContext(ctx, db.db.Rebind(sql), nodeID, streamID, position.Encode(), pieceNum)
return Error.Wrap(err)
}
// CountFinishedTransferQueueItemsByNode return a map of the nodes which has
// finished the exit before the indicated time but there are at least one item
// left in the transfer queue.
func (db *gracefulexitDB) CountFinishedTransferQueueItemsByNode(ctx context.Context, before time.Time, asOfSystemInterval time.Duration) (_ map[storj.NodeID]int64, err error) {
defer mon.Task()(&ctx)(&err)
query := `SELECT n.id, count(getq.node_id)
FROM nodes as n INNER JOIN graceful_exit_segment_transfer_queue as getq
ON n.id = getq.node_id
` + db.db.impl.AsOfSystemInterval(asOfSystemInterval) + `
WHERE n.exit_finished_at IS NOT NULL
AND n.exit_finished_at < ?
GROUP BY n.id`
statement := db.db.Rebind(query)
rows, err := db.db.QueryContext(ctx, statement, before)
if err != nil {
return nil, Error.Wrap(err)
}
defer func() { err = errs.Combine(err, Error.Wrap(rows.Close())) }()
nodesItemsCount := make(map[storj.NodeID]int64)
for rows.Next() {
var (
nodeID storj.NodeID
n int64
)
err := rows.Scan(&nodeID, &n)
if err != nil {
return nil, Error.Wrap(err)
}
nodesItemsCount[nodeID] = n
}
return nodesItemsCount, Error.Wrap(rows.Err())
}
func scanRows(rows tagsql.Rows) (transferQueueItemRows []*gracefulexit.TransferQueueItem, err error) {
for rows.Next() {
transferQueueItem := &gracefulexit.TransferQueueItem{}
var pieceIDBytes []byte
err = rows.Scan(&transferQueueItem.NodeID, &transferQueueItem.StreamID, &transferQueueItem.Position, &transferQueueItem.PieceNum, &pieceIDBytes,
&transferQueueItem.DurabilityRatio, &transferQueueItem.QueuedAt, &transferQueueItem.RequestedAt, &transferQueueItem.LastFailedAt,
&transferQueueItem.LastFailedCode, &transferQueueItem.FailedCount, &transferQueueItem.FinishedAt, &transferQueueItem.OrderLimitSendCount)
if err != nil {
return nil, Error.Wrap(err)
}
if pieceIDBytes != nil {
transferQueueItem.RootPieceID, err = storj.PieceIDFromBytes(pieceIDBytes)
if err != nil {
return nil, Error.Wrap(err)
}
}
transferQueueItemRows = append(transferQueueItemRows, transferQueueItem)
}
return transferQueueItemRows, Error.Wrap(rows.Err())
}
func dbxSegmentTransferToTransferQueueItem(dbxSegmentTransfer *dbx.GracefulExitSegmentTransfer) (item *gracefulexit.TransferQueueItem, err error) {
nID, err := storj.NodeIDFromBytes(dbxSegmentTransfer.NodeId)
if err != nil {
return nil, Error.Wrap(err)
}
streamID, err := uuid.FromBytes(dbxSegmentTransfer.StreamId)
if err != nil {
return nil, Error.Wrap(err)
}
position := metabase.SegmentPositionFromEncoded(dbxSegmentTransfer.Position)
item = &gracefulexit.TransferQueueItem{
NodeID: nID,
StreamID: streamID,
Position: position,
PieceNum: int32(dbxSegmentTransfer.PieceNum),
DurabilityRatio: dbxSegmentTransfer.DurabilityRatio,
QueuedAt: dbxSegmentTransfer.QueuedAt,
OrderLimitSendCount: dbxSegmentTransfer.OrderLimitSendCount,
}
if dbxSegmentTransfer.RootPieceId != nil {
item.RootPieceID, err = storj.PieceIDFromBytes(dbxSegmentTransfer.RootPieceId)
if err != nil {
return nil, err
}
}
if dbxSegmentTransfer.LastFailedCode != nil {
item.LastFailedCode = dbxSegmentTransfer.LastFailedCode
}
if dbxSegmentTransfer.FailedCount != nil {
item.FailedCount = dbxSegmentTransfer.FailedCount
}
if dbxSegmentTransfer.RequestedAt != nil && !dbxSegmentTransfer.RequestedAt.IsZero() {
item.RequestedAt = dbxSegmentTransfer.RequestedAt
}
if dbxSegmentTransfer.LastFailedAt != nil && !dbxSegmentTransfer.LastFailedAt.IsZero() {
item.LastFailedAt = dbxSegmentTransfer.LastFailedAt
}
if dbxSegmentTransfer.FinishedAt != nil && !dbxSegmentTransfer.FinishedAt.IsZero() {
item.FinishedAt = dbxSegmentTransfer.FinishedAt
}
return item, nil
}