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feat(sharding): enabled sharding feature on db (#13)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| package sqle | ||
|
|
||
| import ( | ||
| "context" | ||
| "database/sql" | ||
| "sync" | ||
|
|
||
| "github.com/rs/zerolog/log" | ||
| ) | ||
|
|
||
| type Context struct { | ||
| *sql.DB | ||
| sync.Mutex | ||
| _ noCopy | ||
|
|
||
| index int | ||
| stmts map[string]*cachedStmt | ||
| stmtsMutex sync.RWMutex | ||
| } | ||
|
|
||
| func (db *Context) Query(query string, args ...any) (*Rows, error) { | ||
| return db.QueryContext(context.Background(), query, args...) | ||
| } | ||
|
|
||
| func (db *Context) QueryBuilder(ctx context.Context, b *Builder) (*Rows, error) { | ||
| query, args, err := b.Build() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return db.QueryContext(ctx, query, args...) | ||
| } | ||
|
|
||
| func (db *Context) QueryContext(ctx context.Context, query string, args ...any) (*Rows, error) { | ||
| var rows *sql.Rows | ||
| var stmt *sql.Stmt | ||
| var err error | ||
| if len(args) > 0 { | ||
| stmt, err = db.prepareStmt(ctx, query) | ||
| if err == nil { | ||
| rows, err = stmt.QueryContext(ctx, args...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
|
|
||
| } else { | ||
| rows, err = db.DB.QueryContext(ctx, query, args...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
|
|
||
| return &Rows{Rows: rows, query: query}, nil | ||
| } | ||
|
|
||
| func (db *Context) QueryRow(query string, args ...any) *Row { | ||
| return db.QueryRowContext(context.Background(), query, args...) | ||
| } | ||
|
|
||
| func (db *Context) QueryRowBuilder(ctx context.Context, b *Builder) *Row { | ||
| query, args, err := b.Build() | ||
| if err != nil { | ||
| return &Row{ | ||
| err: err, | ||
| query: query, | ||
| } | ||
| } | ||
|
|
||
| return db.QueryRowContext(ctx, query, args...) | ||
| } | ||
|
|
||
| func (db *Context) QueryRowContext(ctx context.Context, query string, args ...any) *Row { | ||
| var rows *sql.Rows | ||
| var stmt *sql.Stmt | ||
| var err error | ||
|
|
||
| if len(args) > 0 { | ||
| stmt, err = db.prepareStmt(ctx, query) | ||
| if err != nil { | ||
| return &Row{ | ||
| err: err, | ||
| query: query, | ||
| } | ||
| } | ||
| rows, err = stmt.QueryContext(ctx, args...) | ||
| return &Row{ | ||
| rows: rows, | ||
| err: err, | ||
| query: query, | ||
| } | ||
| } | ||
|
|
||
| rows, err = db.DB.QueryContext(ctx, query, args...) | ||
| return &Row{ | ||
| rows: rows, | ||
| err: err, | ||
| query: query, | ||
| } | ||
| } | ||
|
|
||
| func (db *Context) Exec(query string, args ...any) (sql.Result, error) { | ||
| return db.ExecContext(context.Background(), query, args...) | ||
| } | ||
|
|
||
| func (db *Context) ExecBuilder(ctx context.Context, b *Builder) (sql.Result, error) { | ||
| query, args, err := b.Build() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return db.ExecContext(ctx, query, args...) | ||
| } | ||
|
|
||
| func (db *Context) ExecContext(ctx context.Context, query string, args ...any) (sql.Result, error) { | ||
| if len(args) > 0 { | ||
| stmt, err := db.prepareStmt(ctx, query) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return stmt.ExecContext(ctx, args...) | ||
| } | ||
| return db.DB.ExecContext(context.Background(), query, args...) | ||
| } | ||
|
|
||
| func (db *Context) Begin(opts *sql.TxOptions) (*Tx, error) { | ||
| return db.BeginTx(context.TODO(), opts) | ||
|
|
||
| } | ||
|
|
||
| func (db *Context) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error) { | ||
| tx, err := db.DB.BeginTx(ctx, opts) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &Tx{Tx: tx, cachedStmts: make(map[string]*sql.Stmt)}, nil | ||
| } | ||
|
|
||
| func (db *Context) Transaction(ctx context.Context, opts *sql.TxOptions, fn func(ctx context.Context, tx *Tx) error) error { | ||
| tx, err := db.BeginTx(ctx, opts) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = fn(ctx, tx) | ||
| if err != nil { | ||
| if e := tx.Rollback(); e != nil { | ||
| log.Error().Str("pkg", "sqle").Str("tag", "tx").Err(e) | ||
| } | ||
| return err | ||
| } | ||
| return tx.Commit() | ||
| } |
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