feat(job): add job run waiter (#1947)

Author: Codelax

api/jobs/v1alpha1/custom_job_run.go

@@ -0,0 +1,63 @@
+package jobs
+
+import (
+	"time"
+
+	"github.com/scaleway/scaleway-sdk-go/internal/async"
+	"github.com/scaleway/scaleway-sdk-go/internal/errors"
+	"github.com/scaleway/scaleway-sdk-go/scw"
+)
+
+const (
+	defaultRetryInterval = 15 * time.Second
+	defaultTimeout       = 15 * time.Minute
+)
+
+type WaitForJobRunRequest struct {
+	JobRunID      string
+	Region        scw.Region
+	Timeout       *time.Duration
+	RetryInterval *time.Duration
+}
+
+// WaitForJobRun waits for the job run to be in a "terminal state" before returning.
+// This function can be used to wait for a job run to fail for example.
+func (s *API) WaitForJobRun(req *WaitForJobRunRequest, opts ...scw.RequestOption) (*JobRun, error) {
+	timeout := defaultTimeout
+	if req.Timeout != nil {
+		timeout = *req.Timeout
+	}
+	retryInterval := defaultRetryInterval
+	if req.RetryInterval != nil {
+		retryInterval = *req.RetryInterval
+	}
+
+	terminalStatus := map[JobRunState]struct{}{
+		JobRunStateSucceeded: {},
+		JobRunStateFailed:    {},
+		JobRunStateCanceled:  {},
+	}
+
+	jobRun, err := async.WaitSync(&async.WaitSyncConfig{
+		Get: func() (interface{}, bool, error) {
+			res, err := s.GetJobRun(&GetJobRunRequest{
+				JobRunID: req.JobRunID,
+				Region:   req.Region,
+			}, opts...)
+
+			if err != nil {
+				return nil, false, err
+			}
+			_, isTerminal := terminalStatus[res.State]
+
+			return res, isTerminal, nil
+		},
+		Timeout:          timeout,
+		IntervalStrategy: async.LinearIntervalStrategy(retryInterval),
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "waiting for job run failed")
+	}
+
+	return jobRun.(*JobRun), nil
+}