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executor.go
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executor.go
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package executor
import (
"strings"
"github.com/macinnir/dvc/core/connectors"
"github.com/macinnir/dvc/core/lib"
"github.com/macinnir/dvc/core/lib/schema"
"go.uber.org/zap"
)
// Executor executes commands
type Executor struct {
config *lib.ConfigDatabase // Config is the config object
connector connectors.IConnector // IConnector is the injected server manager
server *schema.Server // Server
log *zap.Logger // Logger
}
// NewExecutor returns a new Executor
func NewExecutor(config *lib.ConfigDatabase, connector connectors.IConnector) *Executor {
return &Executor{
config: config,
connector: connector,
}
}
// Connect connects
func (x *Executor) Connect() (server *schema.Server) {
var e error
server, e = x.connector.Connect()
// TODO log
if e != nil {
panic(e)
}
e = x.connector.UseDatabase(server, x.config.Name)
// TODO log
if e != nil {
panic(e)
}
return
}
func parseSQLStatements(str string) []string {
stmts := []string{}
if strings.Contains(str, ";") {
stmts = strings.Split(str, ";")
}
nonEmptyStatements := []string{}
for k := range stmts {
l := strings.TrimSpace(stmts[k])
if len(l) == 0 {
continue
}
nonEmptyStatements = append(nonEmptyStatements, l)
}
return nonEmptyStatements
}
// RunSQL runs the sql produced by the `CompareSchema` command against the target database
// @command compare [reverse] apply
func (x *Executor) RunSQL(sql string) (e error) {
server := x.Connect()
defer server.Connection.Close()
tx, _ := server.Connection.Begin()
stmts := parseSQLStatements(sql)
stmtLen := len(stmts)
for k := range stmts {
x.log.Sugar().Infof("Running %d of %d: %s", k+1, stmtLen, sql)
_, e = tx.Exec(sql)
if e != nil {
tx.Rollback()
return
}
}
x.log.Info("Finished")
e = tx.Commit()
if e != nil {
panic(e)
}
return
}