open-nomad/nomad/plan_endpoint.go

75 lines
1.8 KiB
Go

package nomad
import (
"fmt"
"time"
"github.com/armon/go-metrics"
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/nomad/nomad/structs"
)
// Plan endpoint is used for plan interactions
type Plan struct {
srv *Server
ctx *RPCContext
logger hclog.Logger
}
func NewPlanEndpoint(srv *Server, ctx *RPCContext) *Plan {
return &Plan{srv: srv, ctx: ctx, logger: srv.logger.Named("plan")}
}
// Submit is used to submit a plan to the leader
func (p *Plan) Submit(args *structs.PlanRequest, reply *structs.PlanResponse) error {
authErr := p.srv.Authenticate(p.ctx, args)
// Ensure the connection was initiated by another server if TLS is used.
err := validateTLSCertificateLevel(p.srv, p.ctx, tlsCertificateLevelServer)
if err != nil {
return err
}
if done, err := p.srv.forward("Plan.Submit", args, args, reply); done {
return err
}
p.srv.MeasureRPCRate("plan", structs.RateMetricWrite, args)
if authErr != nil {
return structs.ErrPermissionDenied
}
defer metrics.MeasureSince([]string{"nomad", "plan", "submit"}, time.Now())
if args.Plan == nil {
return fmt.Errorf("cannot submit nil plan")
}
// Pause the Nack timer for the eval as it is making progress as long as it
// is in the plan queue. We resume immediately after we get a result to
// handle the case that the receiving worker dies.
plan := args.Plan
id := plan.EvalID
token := plan.EvalToken
if err := p.srv.evalBroker.PauseNackTimeout(id, token); err != nil {
return err
}
defer p.srv.evalBroker.ResumeNackTimeout(id, token)
// Submit the plan to the queue
future, err := p.srv.planQueue.Enqueue(plan)
if err != nil {
return err
}
// Wait for the results
result, err := future.Wait()
if err != nil {
return err
}
// Package the result
reply.Result = result
reply.Index = result.AllocIndex
return nil
}