141 lines
3.0 KiB
Go
141 lines
3.0 KiB
Go
package store
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import (
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"context"
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"fmt"
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"os"
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"time"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgxpool"
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"github.com/jackc/tern/v2/migrate"
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"github.com/knadh/goyesql/v2"
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"github.com/zerodha/logf"
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)
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const (
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schemaTable = "schema_version"
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)
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type (
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queries struct {
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CommitBlock string `query:"commit-block"`
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GetMissingBlocks string `query:"get-missing-blocks"`
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GetSearchBounds string `query:"get-search-bounds"`
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InitSyncerMeta string `query:"init-syncer-meta"`
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SetSearchLowerBound string `query:"set-search-lower-bound"`
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}
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PostgresStoreOpts struct {
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DSN string
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MigrationsFolderPath string
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InitialLowerBound uint64
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Logg logf.Logger
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Queries goyesql.Queries
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}
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)
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type PostgresStore struct {
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logg logf.Logger
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pool *pgxpool.Pool
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queries queries
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}
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func NewPostgresStore(o PostgresStoreOpts) (Store[pgx.Rows], error) {
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postgresStore := &PostgresStore{
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logg: o.Logg,
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}
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if err := goyesql.ScanToStruct(&postgresStore.queries, o.Queries, nil); err != nil {
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return nil, fmt.Errorf("failed to scan queries %v", err)
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}
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parsedConfig, err := pgxpool.ParseConfig(o.DSN)
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if err != nil {
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return nil, err
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}
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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dbPool, err := pgxpool.NewWithConfig(ctx, parsedConfig)
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if err != nil {
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return nil, err
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}
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conn, err := dbPool.Acquire(ctx)
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if err != nil {
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return nil, err
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}
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defer conn.Release()
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migrator, err := migrate.NewMigrator(ctx, conn.Conn(), schemaTable)
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if err != nil {
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return nil, err
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}
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if err := migrator.LoadMigrations(os.DirFS(o.MigrationsFolderPath)); err != nil {
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return nil, err
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}
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if err := migrator.Migrate(ctx); err != nil {
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return nil, err
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}
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_, err = dbPool.Exec(ctx, postgresStore.queries.InitSyncerMeta, o.InitialLowerBound)
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if err != nil {
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return nil, err
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}
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postgresStore.pool = dbPool
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return postgresStore, nil
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}
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func (s *PostgresStore) GetSearchBounds(ctx context.Context, batchSize uint64, headCursor uint64, headBlockLag uint64) (uint64, uint64, error) {
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var (
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lowerBound uint64
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upperBound uint64
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)
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if err := s.pool.QueryRow(
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ctx,
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s.queries.GetSearchBounds,
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batchSize,
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headCursor,
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headBlockLag,
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).Scan(&lowerBound, &upperBound); err != nil {
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s.logg.Error("pgx error", "error", err)
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return 0, 0, err
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}
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return lowerBound, upperBound, nil
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}
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func (s *PostgresStore) GetMissingBlocks(ctx context.Context, lowerBound uint64, upperBound uint64) (pgx.Rows, error) {
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rows, err := s.pool.Query(ctx, s.queries.GetMissingBlocks, lowerBound, upperBound)
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if err != nil {
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return nil, err
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}
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return rows, nil
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}
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func (s *PostgresStore) SetSearchLowerBound(ctx context.Context, newLowerBound uint64) error {
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_, err := s.pool.Exec(ctx, s.queries.SetSearchLowerBound, newLowerBound)
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if err != nil {
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return err
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}
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return nil
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}
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func (s *PostgresStore) CommitBlock(ctx context.Context, block uint64) error {
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_, err := s.pool.Exec(ctx, s.queries.CommitBlock, block)
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if err != nil {
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return err
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}
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return nil
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}
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