|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "database/sql" |
| 6 | + "fmt" |
| 7 | + "path" |
| 8 | + "time" |
| 9 | + |
| 10 | + ydb "github.com/ydb-platform/ydb-go-sdk/v3" |
| 11 | + "github.com/ydb-platform/ydb-go-sdk/v3/retry" |
| 12 | + "github.com/ydb-platform/ydb-go-sdk/v3/retry/budget" |
| 13 | + "github.com/ydb-platform/ydb-go-sdk/v3/table" |
| 14 | + "github.com/ydb-platform/ydb-go-sdk/v3/trace" |
| 15 | + |
| 16 | + "slo/internal/config" |
| 17 | + "slo/internal/generator" |
| 18 | +) |
| 19 | + |
| 20 | +const ( |
| 21 | + createTemplate = ` |
| 22 | +CREATE TABLE ` + "`%s`" + ` ( |
| 23 | + hash Uint64, |
| 24 | + id Uint64, |
| 25 | + payload_str Utf8, |
| 26 | + payload_double Double, |
| 27 | + payload_timestamp Timestamp, |
| 28 | + payload_hash Uint64, |
| 29 | + PRIMARY KEY ( |
| 30 | + hash, |
| 31 | + id |
| 32 | + ) |
| 33 | +) WITH ( |
| 34 | + AUTO_PARTITIONING_BY_SIZE = ENABLED, |
| 35 | + AUTO_PARTITIONING_BY_LOAD = ENABLED, |
| 36 | + AUTO_PARTITIONING_PARTITION_SIZE_MB = %d, |
| 37 | + AUTO_PARTITIONING_MIN_PARTITIONS_COUNT = %d, |
| 38 | + AUTO_PARTITIONING_MAX_PARTITIONS_COUNT = %d, |
| 39 | + UNIFORM_PARTITIONS = %d |
| 40 | +);` |
| 41 | + dropTemplate = `DROP TABLE ` + "`%s`" + `;` |
| 42 | + upsertTemplate = ` |
| 43 | +UPSERT INTO ` + "`%s`" + ` ( |
| 44 | + id, hash, payload_str, payload_double, payload_timestamp |
| 45 | +) VALUES ( |
| 46 | + $id, Digest::NumericHash($id), $payload_str, $payload_double, $payload_timestamp |
| 47 | +); |
| 48 | +` |
| 49 | + selectTemplate = ` |
| 50 | +SELECT id, payload_str, payload_double, payload_timestamp, payload_hash |
| 51 | +FROM ` + "`%s`" + ` WHERE id = $id AND hash = Digest::NumericHash($id); |
| 52 | +` |
| 53 | +) |
| 54 | + |
| 55 | +var ( |
| 56 | + readTx = table.TxControl( |
| 57 | + table.BeginTx( |
| 58 | + table.WithOnlineReadOnly(), |
| 59 | + ), |
| 60 | + table.CommitTx(), |
| 61 | + ) |
| 62 | + |
| 63 | + writeTx = table.SerializableReadWriteTxControl( |
| 64 | + table.CommitTx(), |
| 65 | + ) |
| 66 | +) |
| 67 | + |
| 68 | +type Storage struct { |
| 69 | + cc *ydb.Driver |
| 70 | + c ydb.SQLConnector |
| 71 | + db *sql.DB |
| 72 | + cfg *config.Config |
| 73 | + createQuery string |
| 74 | + dropQuery string |
| 75 | + upsertQuery string |
| 76 | + selectQuery string |
| 77 | + retryBudget interface { |
| 78 | + budget.Budget |
| 79 | + |
| 80 | + Stop() |
| 81 | + } |
| 82 | +} |
| 83 | + |
| 84 | +func NewStorage(ctx context.Context, cfg *config.Config, poolSize int) (s *Storage, err error) { |
| 85 | + ctx, cancel := context.WithTimeout(ctx, time.Minute*5) //nolint:gomnd |
| 86 | + defer cancel() |
| 87 | + |
| 88 | + retryBudget := budget.Limited(int(float64(poolSize) * 0.1)) //nolint:gomnd |
| 89 | + |
| 90 | + s = &Storage{ |
| 91 | + cfg: cfg, |
| 92 | + createQuery: fmt.Sprintf(createTemplate, cfg.Table, |
| 93 | + cfg.PartitionSize, cfg.MinPartitionsCount, cfg.MaxPartitionsCount, cfg.MinPartitionsCount), |
| 94 | + dropQuery: fmt.Sprintf(dropTemplate, cfg.Table), |
| 95 | + upsertQuery: fmt.Sprintf(upsertTemplate, cfg.Table), |
| 96 | + selectQuery: fmt.Sprintf(selectTemplate, cfg.Table), |
| 97 | + retryBudget: retryBudget, |
| 98 | + } |
| 99 | + |
| 100 | + s.cc, err = ydb.Open( |
| 101 | + ctx, |
| 102 | + s.cfg.Endpoint+s.cfg.DB, |
| 103 | + ydb.WithRetryBudget(retryBudget), |
| 104 | + ) |
| 105 | + if err != nil { |
| 106 | + return nil, fmt.Errorf("ydb.Open error: %w", err) |
| 107 | + } |
| 108 | + |
| 109 | + s.c, err = ydb.Connector(s.cc, |
| 110 | + ydb.WithAutoDeclare(), |
| 111 | + ydb.WithTablePathPrefix(path.Join(s.cc.Name(), label)), |
| 112 | + ydb.WithQueryService(false), |
| 113 | + ) |
| 114 | + if err != nil { |
| 115 | + return nil, fmt.Errorf("ydb.Connector error: %w", err) |
| 116 | + } |
| 117 | + |
| 118 | + s.db = sql.OpenDB(s.c) |
| 119 | + |
| 120 | + s.db.SetMaxOpenConns(poolSize) |
| 121 | + s.db.SetMaxIdleConns(poolSize) |
| 122 | + s.db.SetConnMaxIdleTime(time.Second) |
| 123 | + |
| 124 | + return s, nil |
| 125 | +} |
| 126 | + |
| 127 | +func (s *Storage) Read(ctx context.Context, entryID generator.RowID) (res generator.Row, attempts int, err error) { |
| 128 | + if err = ctx.Err(); err != nil { |
| 129 | + return generator.Row{}, attempts, err |
| 130 | + } |
| 131 | + |
| 132 | + ctx, cancel := context.WithTimeout(ctx, time.Duration(s.cfg.ReadTimeout)*time.Millisecond) |
| 133 | + defer cancel() |
| 134 | + |
| 135 | + err = retry.Do(ydb.WithTxControl(ctx, readTx), s.db, |
| 136 | + func(ctx context.Context, cc *sql.Conn) (err error) { |
| 137 | + if err = ctx.Err(); err != nil { |
| 138 | + return err |
| 139 | + } |
| 140 | + |
| 141 | + row := cc.QueryRowContext(ydb.WithQueryMode(ctx, ydb.DataQueryMode), s.selectQuery, |
| 142 | + sql.Named("id", &entryID), |
| 143 | + ) |
| 144 | + |
| 145 | + var hash *uint64 |
| 146 | + |
| 147 | + return row.Scan(&res.ID, &res.PayloadStr, &res.PayloadDouble, &res.PayloadTimestamp, &hash) |
| 148 | + }, |
| 149 | + retry.WithIdempotent(true), |
| 150 | + retry.WithTrace( |
| 151 | + &trace.Retry{ |
| 152 | + OnRetry: func(info trace.RetryLoopStartInfo) func(trace.RetryLoopDoneInfo) { |
| 153 | + return func(info trace.RetryLoopDoneInfo) { |
| 154 | + attempts = info.Attempts |
| 155 | + } |
| 156 | + }, |
| 157 | + }, |
| 158 | + ), |
| 159 | + ) |
| 160 | + |
| 161 | + return res, attempts, err |
| 162 | +} |
| 163 | + |
| 164 | +func (s *Storage) Write(ctx context.Context, e generator.Row) (attempts int, err error) { |
| 165 | + if err = ctx.Err(); err != nil { |
| 166 | + return attempts, err |
| 167 | + } |
| 168 | + |
| 169 | + ctx, cancel := context.WithTimeout(ctx, time.Duration(s.cfg.WriteTimeout)*time.Millisecond) |
| 170 | + defer cancel() |
| 171 | + |
| 172 | + err = retry.Do(ydb.WithTxControl(ctx, writeTx), s.db, |
| 173 | + func(ctx context.Context, cc *sql.Conn) (err error) { |
| 174 | + if err = ctx.Err(); err != nil { |
| 175 | + return err |
| 176 | + } |
| 177 | + |
| 178 | + _, err = cc.ExecContext(ydb.WithQueryMode(ctx, ydb.DataQueryMode), s.upsertQuery, |
| 179 | + sql.Named("id", e.ID), |
| 180 | + sql.Named("payload_str", *e.PayloadStr), |
| 181 | + sql.Named("payload_double", *e.PayloadDouble), |
| 182 | + sql.Named("payload_timestamp", *e.PayloadTimestamp), |
| 183 | + ) |
| 184 | + |
| 185 | + return err |
| 186 | + }, |
| 187 | + retry.WithIdempotent(true), |
| 188 | + retry.WithTrace( |
| 189 | + &trace.Retry{ |
| 190 | + OnRetry: func(info trace.RetryLoopStartInfo) func(trace.RetryLoopDoneInfo) { |
| 191 | + return func(info trace.RetryLoopDoneInfo) { |
| 192 | + attempts = info.Attempts |
| 193 | + } |
| 194 | + }, |
| 195 | + }, |
| 196 | + ), |
| 197 | + ) |
| 198 | + |
| 199 | + return attempts, err |
| 200 | +} |
| 201 | + |
| 202 | +func (s *Storage) createTable(ctx context.Context) error { |
| 203 | + if err := ctx.Err(); err != nil { |
| 204 | + return err |
| 205 | + } |
| 206 | + |
| 207 | + ctx, cancel := context.WithTimeout(ctx, time.Duration(s.cfg.WriteTimeout)*time.Millisecond) |
| 208 | + defer cancel() |
| 209 | + |
| 210 | + return retry.Do(ydb.WithTxControl(ctx, writeTx), s.db, |
| 211 | + func(ctx context.Context, cc *sql.Conn) error { |
| 212 | + _, err := s.db.ExecContext(ydb.WithQueryMode(ctx, ydb.SchemeQueryMode), s.createQuery) |
| 213 | + |
| 214 | + return err |
| 215 | + }, retry.WithIdempotent(true), |
| 216 | + ) |
| 217 | +} |
| 218 | + |
| 219 | +func (s *Storage) dropTable(ctx context.Context) error { |
| 220 | + if err := ctx.Err(); err != nil { |
| 221 | + return err |
| 222 | + } |
| 223 | + |
| 224 | + ctx, cancel := context.WithTimeout(ctx, time.Duration(s.cfg.WriteTimeout)*time.Millisecond) |
| 225 | + defer cancel() |
| 226 | + |
| 227 | + return retry.Do(ydb.WithTxControl(ctx, writeTx), s.db, |
| 228 | + func(ctx context.Context, cc *sql.Conn) error { |
| 229 | + _, err := s.db.ExecContext(ydb.WithQueryMode(ctx, ydb.SchemeQueryMode), s.dropQuery) |
| 230 | + |
| 231 | + return err |
| 232 | + }, retry.WithIdempotent(true), |
| 233 | + ) |
| 234 | +} |
| 235 | + |
| 236 | +func (s *Storage) close(ctx context.Context) error { |
| 237 | + s.retryBudget.Stop() |
| 238 | + |
| 239 | + if err := ctx.Err(); err != nil { |
| 240 | + return err |
| 241 | + } |
| 242 | + |
| 243 | + if err := s.db.Close(); err != nil { |
| 244 | + return fmt.Errorf("error close database/sql driver: %w", err) |
| 245 | + } |
| 246 | + |
| 247 | + if err := s.c.Close(); err != nil { |
| 248 | + return fmt.Errorf("error close connector: %w", err) |
| 249 | + } |
| 250 | + |
| 251 | + if err := s.cc.Close(ctx); err != nil { |
| 252 | + return fmt.Errorf("error close ydb driver: %w", err) |
| 253 | + } |
| 254 | + |
| 255 | + return nil |
| 256 | +} |
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