57 lines
1.8 KiB
Go
57 lines
1.8 KiB
Go
package nomad
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import (
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"time"
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"github.com/hashicorp/nomad/nomad/structs"
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)
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// drainerShim implements the drainer.RaftApplier interface required by the
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// NodeDrainer.
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type drainerShim struct {
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s *Server
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}
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func (d drainerShim) NodesDrainComplete(nodes []string, event *structs.NodeEvent) (uint64, error) {
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args := &structs.BatchNodeUpdateDrainRequest{
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Updates: make(map[string]*structs.DrainUpdate, len(nodes)),
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NodeEvents: make(map[string]*structs.NodeEvent, len(nodes)),
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WriteRequest: structs.WriteRequest{Region: d.s.config.Region},
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UpdatedAt: time.Now().Unix(),
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}
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update := &structs.DrainUpdate{}
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for _, node := range nodes {
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args.Updates[node] = update
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if event != nil {
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args.NodeEvents[node] = event
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}
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}
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resp, index, err := d.s.raftApply(structs.BatchNodeUpdateDrainRequestType, args)
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return d.convertApplyErrors(resp, index, err)
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}
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func (d drainerShim) AllocUpdateDesiredTransition(allocs map[string]*structs.DesiredTransition, evals []*structs.Evaluation) (uint64, error) {
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args := &structs.AllocUpdateDesiredTransitionRequest{
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Allocs: allocs,
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Evals: evals,
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WriteRequest: structs.WriteRequest{Region: d.s.config.Region},
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}
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resp, index, err := d.s.raftApply(structs.AllocUpdateDesiredTransitionRequestType, args)
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return d.convertApplyErrors(resp, index, err)
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}
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// convertApplyErrors parses the results of a raftApply and returns the index at
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// which it was applied and any error that occurred. Raft Apply returns two
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// separate errors, Raft library errors and user returned errors from the FSM.
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// This helper, joins the errors by inspecting the applyResponse for an error.
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func (d drainerShim) convertApplyErrors(applyResp interface{}, index uint64, err error) (uint64, error) {
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if applyResp != nil {
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if fsmErr, ok := applyResp.(error); ok && fsmErr != nil {
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return index, fsmErr
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}
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}
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return index, err
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}
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