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feat: ajust PreparedStmtDB unlock location and BuildCondition if logic (#4681)

This commit is contained in:
heige 2021-10-08 11:16:58 +08:00 committed by GitHub
parent c13f3011f9
commit e3fc49a694
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 20 additions and 11 deletions
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19
prepare_stmt.go
View File

@ -32,14 +32,14 @@ func (db *PreparedStmtDB) GetDBConn() (*sql.DB, error) {
func (db *PreparedStmtDB) Close() {
db.Mux.Lock()
defer db.Mux.Unlock()
for _, query := range db.PreparedSQL {
if stmt, ok := db.Stmts[query]; ok {
delete(db.Stmts, query)
go stmt.Close()
}
}
db.Mux.Unlock()
}
func (db *PreparedStmtDB) prepare(ctx context.Context, conn ConnPool, isTransaction bool, query string) (Stmt, error) {
@ -51,9 +51,10 @@ func (db *PreparedStmtDB) prepare(ctx context.Context, conn ConnPool, isTransact
db.Mux.RUnlock()
db.Mux.Lock()
defer db.Mux.Unlock()
// double check
if stmt, ok := db.Stmts[query]; ok && (!stmt.Transaction || isTransaction) {
db.Mux.Unlock()
return stmt, nil
} else if ok {
go stmt.Close()
@ -64,7 +65,6 @@ func (db *PreparedStmtDB) prepare(ctx context.Context, conn ConnPool, isTransact
db.Stmts[query] = Stmt{Stmt: stmt, Transaction: isTransaction}
db.PreparedSQL = append(db.PreparedSQL, query)
}
defer db.Mux.Unlock()
return db.Stmts[query], err
}
@ -83,9 +83,9 @@ func (db *PreparedStmtDB) ExecContext(ctx context.Context, query string, args ..
result, err = stmt.ExecContext(ctx, args...)
if err != nil {
db.Mux.Lock()
defer db.Mux.Unlock()
go stmt.Close()
delete(db.Stmts, query)
db.Mux.Unlock()
}
}
return result, err
@ -97,9 +97,10 @@ func (db *PreparedStmtDB) QueryContext(ctx context.Context, query string, args .
rows, err = stmt.QueryContext(ctx, args...)
if err != nil {
db.Mux.Lock()
defer db.Mux.Unlock()
go stmt.Close()
delete(db.Stmts, query)
db.Mux.Unlock()
}
}
return rows, err
@ -138,9 +139,10 @@ func (tx *PreparedStmtTX) ExecContext(ctx context.Context, query string, args ..
result, err = tx.Tx.StmtContext(ctx, stmt.Stmt).ExecContext(ctx, args...)
if err != nil {
tx.PreparedStmtDB.Mux.Lock()
defer tx.PreparedStmtDB.Mux.Unlock()
go stmt.Close()
delete(tx.PreparedStmtDB.Stmts, query)
tx.PreparedStmtDB.Mux.Unlock()
}
}
return result, err
@ -152,9 +154,10 @@ func (tx *PreparedStmtTX) QueryContext(ctx context.Context, query string, args .
rows, err = tx.Tx.Stmt(stmt.Stmt).QueryContext(ctx, args...)
if err != nil {
tx.PreparedStmtDB.Mux.Lock()
defer tx.PreparedStmtDB.Mux.Unlock()
go stmt.Close()
delete(tx.PreparedStmtDB.Stmts, query)
tx.PreparedStmtDB.Mux.Unlock()
}
}
return rows, err

12
statement.go
View File

@ -271,13 +271,19 @@ func (stmt *Statement) BuildCondition(query interface{}, args ...interface{}) []
if _, err := strconv.Atoi(s); err != nil {
if s == "" && len(args) == 0 {
return nil
} else if len(args) == 0 || (len(args) > 0 && strings.Contains(s, "?")) {
}
if len(args) == 0 || (len(args) > 0 && strings.Contains(s, "?")) {
// looks like a where condition
return []clause.Expression{clause.Expr{SQL: s, Vars: args}}
} else if len(args) > 0 && strings.Contains(s, "@") {
}
if len(args) > 0 && strings.Contains(s, "@") {
// looks like a named query
return []clause.Expression{clause.NamedExpr{SQL: s, Vars: args}}
} else if len(args) == 1 {
}
if len(args) == 1 {
return []clause.Expression{clause.Eq{Column: s, Value: args[0]}}
}
}