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199d12865f
This change isolates all the code that deals with node selection in the scheduler into its own package called feasible. --------- Co-authored-by: Tim Gross <tgross@hashicorp.com>
45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package scheduler
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import (
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"fmt"
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log "github.com/hashicorp/go-hclog"
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"github.com/hashicorp/nomad/scheduler/structs"
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)
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const (
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// SchedulerVersion is the version of the scheduler. Changes to the
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// scheduler that are incompatible with prior schedulers will increment this
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// version. It is used to disallow dequeueing when the versions do not match
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// across the leader and the dequeueing scheduler.
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SchedulerVersion uint16 = 1
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)
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// BuiltinSchedulers contains the built in registered schedulers
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// which are available
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var BuiltinSchedulers = map[string]structs.Factory{
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"service": NewServiceScheduler,
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"batch": NewBatchScheduler,
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"system": NewSystemScheduler,
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"sysbatch": NewSysBatchScheduler,
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}
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// NewScheduler is used to instantiate and return a new scheduler
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// given the scheduler name, initial state, and planner.
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func NewScheduler(
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name string, logger log.Logger, eventsCh chan<- interface{}, state structs.State, planner structs.Planner,
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) (structs.Scheduler, error) {
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// Lookup the factory function
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factory, ok := BuiltinSchedulers[name]
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if !ok {
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return nil, fmt.Errorf("unknown scheduler '%s'", name)
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}
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// Instantiate the scheduler
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sched := factory(logger, eventsCh, state, planner)
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return sched, nil
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}
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