gh-ost/go/logic/hooks.go

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2016-08-19 12:52:49 +00:00
/*
Copyright 2016 GitHub Inc.
See https://github.com/github/gh-ost/blob/master/LICENSE
*/
package logic
import (
"fmt"
"os"
"os/exec"
"github.com/github/gh-ost/go/base"
"github.com/openark/golib/log"
)
type HooksExecutor struct {
migrationContext *base.MigrationContext
}
func NewHooksExecutor() *HooksExecutor {
return &HooksExecutor{
migrationContext: base.GetMigrationContext(),
}
}
func (this *HooksExecutor) detectHooks() error {
return nil
}
func (this *HooksExecutor) applyEnvironmentVairables() []string {
env := os.Environ()
env = append(env, fmt.Sprintf("GH_OST_DATABASE_NAME=%s", this.migrationContext.DatabaseName))
env = append(env, fmt.Sprintf("GH_OST_TABLE_NAME=%s", this.migrationContext.OriginalTableName))
env = append(env, fmt.Sprintf("GH_OST_GHOST_TABLE_NAME=%s", this.migrationContext.GetGhostTableName()))
env = append(env, fmt.Sprintf("GH_OST_OLD_TABLE_NAME=%s", this.migrationContext.GetOldTableName()))
env = append(env, fmt.Sprintf("GH_OST_DDL=%s", this.migrationContext.AlterStatement))
env = append(env, fmt.Sprintf("GH_OST_ELAPSED_SECONDS=%f", this.migrationContext.ElapsedTime().Seconds()))
return env
}
// commandRun executes a command with arguments, and set relevant environment variables
func (this *HooksExecutor) commandRun(commandText string, arguments ...string) error {
cmd := exec.Command(commandText, arguments...)
cmd.Env = this.applyEnvironmentVairables()
if err := cmd.Run(); err != nil {
return log.Errore(err)
}
return nil
}
func (this *HooksExecutor) onStartup() error {
return nil
}
func (this *HooksExecutor) onValidated() error {
return nil
}
func (this *HooksExecutor) onAboutToRowCopy() error {
return nil
}
func (this *HooksExecutor) onRowCopyComplete() error {
return nil
}
func (this *HooksExecutor) onBeginPostponed() error {
return nil
}
func (this *HooksExecutor) onAboutToCutOver() error {
return nil
}
func (this *HooksExecutor) onInteractiveCommand(command string) error {
return nil
}
func (this *HooksExecutor) onSuccess() error {
return nil
}
func (this *HooksExecutor) onFailure() error {
return nil
}