Louis RuchandMichael Gaffney
649ed32504
* Scheduler updates * Add convenience methods to db/timestamp.Timestamp * Remove recursive loop Co-authored-by: Michael Gaffney <mike@gaffney.cc>
55 lines
1.8 KiB
Go
55 lines
1.8 KiB
Go
package scheduler
|
||
|
||
import (
|
||
"context"
|
||
"time"
|
||
|
||
"github.com/hashicorp/boundary/internal/errors"
|
||
)
|
||
|
||
// Job defines an interface for jobs that can be invoked by the scheduler.
|
||
type Job interface {
|
||
// Status reports the job’s current status. The status is periodically persisted by
|
||
// the scheduler when a job is running, and will be used to verify a job is making progress.
|
||
Status() JobStatus
|
||
|
||
// Run performs the required work depending on the implementation.
|
||
// The context is used to notify the job that it should exit early.
|
||
Run(ctx context.Context) error
|
||
|
||
// NextRunIn returns the duration until the next job run should be scheduled. This
|
||
// method is invoked after a run has successfully completed and the next run time
|
||
// is being persisted by the scheduler. If an error is returned, the error will be logged
|
||
// but the duration returned will still be used in scheduling. If a zero duration is returned
|
||
// the job will be scheduled to run again immediately.
|
||
NextRunIn() (time.Duration, error)
|
||
|
||
// Name is the unique name of the job.
|
||
Name() string
|
||
|
||
// Description is the human readable description of the job.
|
||
Description() string
|
||
}
|
||
|
||
// JobStatus defines the struct that must be returned by the Job.Status() method.
|
||
type JobStatus struct {
|
||
// Completed and Total are used to indicate job progress,
|
||
// each job implementation will determine the definition of
|
||
// progress by calculating both Completed and Total.
|
||
Completed, Total int
|
||
}
|
||
|
||
func validateJob(j Job) error {
|
||
const op = "scheduler.validateJob"
|
||
if j == nil {
|
||
return errors.New(errors.InvalidParameter, op, "missing job")
|
||
}
|
||
if j.Name() == "" {
|
||
return errors.New(errors.InvalidParameter, op, "missing name")
|
||
}
|
||
if j.Description() == "" {
|
||
return errors.New(errors.InvalidParameter, op, "missing description")
|
||
}
|
||
return nil
|
||
}
|