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affinityassistant_types.go
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/
affinityassistant_types.go
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/*
Copyright 2023 The Tekton Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package affinityassistant
import (
"context"
"fmt"
"github.com/tektoncd/pipeline/pkg/apis/config"
)
type AffinityAssistantBehavior string
const (
AffinityAssistantDisabled = AffinityAssistantBehavior("AffinityAssistantDisabled")
AffinityAssistantPerWorkspace = AffinityAssistantBehavior("AffinityAssistantPerWorkspace")
AffinityAssistantPerPipelineRun = AffinityAssistantBehavior("AffinityAssistantPerPipelineRun")
AffinityAssistantPerPipelineRunWithIsolation = AffinityAssistantBehavior("AffinityAssistantPerPipelineRunWithIsolation")
)
// GetAffinityAssistantBehavior returns an AffinityAssistantBehavior based on the
// combination of "disable-affinity-assistant" and "coschedule" feature flags
// TODO(#6740)(WIP): consume this function in the PipelineRun reconciler to determine Affinity Assistant behavior.
func GetAffinityAssistantBehavior(ctx context.Context) (AffinityAssistantBehavior, error) {
cfg := config.FromContextOrDefaults(ctx)
disableAA := cfg.FeatureFlags.DisableAffinityAssistant
coschedule := cfg.FeatureFlags.Coschedule
// at this point, we have validated that "coschedule" can only be "workspaces"
// when "disable-affinity-assistant" is false
if !disableAA {
return AffinityAssistantPerWorkspace, nil
}
switch coschedule {
case config.CoschedulePipelineRuns:
return AffinityAssistantPerPipelineRun, nil
case config.CoscheduleIsolatePipelineRun:
return AffinityAssistantPerPipelineRunWithIsolation, nil
case config.CoscheduleDisabled, config.CoscheduleWorkspaces:
return AffinityAssistantDisabled, nil
}
return "", fmt.Errorf("unknown combination of disable-affinity-assistant: %v and coschedule: %v", disableAA, coschedule)
}