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rollback.go
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rollback.go
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package ecspresso
import (
"fmt"
"os"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ecs"
"github.com/fatih/color"
"github.com/pkg/errors"
)
func (d *App) Rollback(opt RollbackOption) error {
ctx, cancel := d.Start()
defer cancel()
if aws.BoolValue(opt.DeregisterTaskDefinition) && aws.BoolValue(opt.NoWait) {
fmt.Fprintln(
os.Stderr,
color.YellowString("WARNING: --deregister-task-definition not works with --no-wait together"),
)
}
d.Log("Starting rollback", opt.DryRunString())
sv, err := d.DescribeServiceStatus(ctx, 0)
if err != nil {
return errors.Wrap(err, "failed to describe service status")
}
currentArn := *sv.TaskDefinition
targetArn, err := d.FindRollbackTarget(ctx, currentArn)
if err != nil {
return errors.Wrap(err, "failed to find rollback target")
}
if isCodeDeploy(sv.DeploymentController) {
return d.RollbackByCodeDeploy(ctx, sv, targetArn, opt)
}
d.Log("Rolling back to", arnToName(targetArn))
if *opt.DryRun {
d.Log("DRY RUN OK")
return nil
}
if err := d.UpdateServiceTasks(
ctx,
targetArn,
nil,
DeployOption{
ForceNewDeployment: aws.Bool(false),
UpdateService: aws.Bool(false),
},
); err != nil {
return errors.Wrap(err, "failed to update service")
}
if *opt.NoWait {
d.Log("Service is rolled back.")
return nil
}
time.Sleep(delayForServiceChanged) // wait for service updated
if err := d.WaitServiceStable(ctx, time.Now()); err != nil {
return errors.Wrap(err, "failed to wait service stable")
}
d.Log("Service is stable now. Completed!")
if *opt.DeregisterTaskDefinition {
d.Log("Deregistering the rolled-back task definition", arnToName(currentArn))
_, err := d.ecs.DeregisterTaskDefinitionWithContext(
ctx,
&ecs.DeregisterTaskDefinitionInput{
TaskDefinition: ¤tArn,
},
)
if err != nil {
return errors.Wrap(err, "failed to deregister task definition")
}
d.Log(arnToName(currentArn), "was deregistered successfully")
}
return nil
}