// CreateEval is used to create a new evaluation. This allows
// the worker to act as the planner for the scheduler.
func (w *Worker) CreateEval(eval *structs.Evaluation) error {
// Check for a shutdown before plan submission
if w.srv.IsShutdown() {
return fmt.Errorf("shutdown while planning")
}
defer metrics.MeasureSince([]string{"nomad", "worker", "create_eval"}, time.Now())
// Store the snapshot index in the eval
eval.SnapshotIndex = w.snapshotIndex
// Setup the request
req := structs.EvalUpdateRequest{
Evals: []*structs.Evaluation{eval},
EvalToken: w.evalToken,
WriteRequest: structs.WriteRequest{
Region: w.srv.config.Region,
},
}
var resp structs.GenericResponse
SUBMIT:
// Make the RPC call
if err := w.srv.RPC("Eval.Create", &req, &resp); err != nil {
w.logger.Printf("[ERR] worker: failed to create evaluation %#v: %v",
eval, err)
if w.shouldResubmit(err) && !w.backoffErr(backoffBaselineSlow, backoffLimitSlow) {
goto SUBMIT
}
return err
} else {
w.logger.Printf("[DEBUG] worker: created evaluation %#v", eval)
w.backoffReset()
}
return nil
}
// ReblockEval is used to reinsert a blocked evaluation into the blocked eval
// tracker. This allows the worker to act as the planner for the scheduler.
func (w *Worker) ReblockEval(eval *structs.Evaluation) error {
// Check for a shutdown before plan submission
if w.srv.IsShutdown() {
return fmt.Errorf("shutdown while planning")
}
defer metrics.MeasureSince([]string{"nomad", "worker", "reblock_eval"}, time.Now())
// Update the evaluation if the queued jobs is not same as what is
// recorded in the job summary
summary, err := w.srv.fsm.state.JobSummaryByID(eval.JobID)
if err != nil {
return fmt.Errorf("couldn't retreive job summary: %v", err)
}
if summary != nil {
var hasChanged bool
for tg, summary := range summary.Summary {
if queued, ok := eval.QueuedAllocations[tg]; ok {
if queued != summary.Queued {
hasChanged = true
break
}
}
}
if hasChanged {
if err := w.UpdateEval(eval); err != nil {
return err
}
}
}
// Store the snapshot index in the eval
eval.SnapshotIndex = w.snapshotIndex
// Setup the request
req := structs.EvalUpdateRequest{
Evals: []*structs.Evaluation{eval},
EvalToken: w.evalToken,
WriteRequest: structs.WriteRequest{
Region: w.srv.config.Region,
},
}
var resp structs.GenericResponse
SUBMIT:
// Make the RPC call
if err := w.srv.RPC("Eval.Reblock", &req, &resp); err != nil {
w.logger.Printf("[ERR] worker: failed to reblock evaluation %#v: %v",
eval, err)
if w.shouldResubmit(err) && !w.backoffErr(backoffBaselineSlow, backoffLimitSlow) {
goto SUBMIT
}
return err
} else {
w.logger.Printf("[DEBUG] worker: reblocked evaluation %#v", eval)
w.backoffReset()
}
return nil
}