mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-28 06:52:34 +00:00
79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
/**
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# Copyright (c) NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package transform
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import (
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"fmt"
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"tags.cncf.io/container-device-interface/specs-go"
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)
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type simplify struct{}
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var _ Transformer = (*simplify)(nil)
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// NewSimplifier creates a simplifier transformer.
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// This transoformer ensures that entities in the spec are deduplicated and that common edits are removed from device-specific edits.
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func NewSimplifier() Transformer {
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return Merge(
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dedupe{},
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simplify{},
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sorter{},
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)
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}
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// Transform simplifies the supplied spec.
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// Edits that are present in the common edits are removed from device-specific edits.
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func (s simplify) Transform(spec *specs.Spec) error {
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if spec == nil {
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return nil
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}
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dedupe := dedupe{}
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if err := dedupe.Transform(spec); err != nil {
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return err
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}
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commonEntityIDs, err := (*containerEdits)(&spec.ContainerEdits).getEntityIds()
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if err != nil {
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return err
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}
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toRemove := newRemover(commonEntityIDs...)
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var updatedDevices []specs.Device
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for _, device := range spec.Devices {
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deviceAsSpec := specs.Spec{
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ContainerEdits: device.ContainerEdits,
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}
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err := toRemove.Transform(&deviceAsSpec)
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if err != nil {
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return fmt.Errorf("failed to transform device edits: %w", err)
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}
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if !(containerEdits)(deviceAsSpec.ContainerEdits).IsEmpty() {
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// Devices with empty edits are invalid.
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// We only update the container edits for the device if this would
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// result in a valid device.
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device.ContainerEdits = deviceAsSpec.ContainerEdits
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}
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updatedDevices = append(updatedDevices, device)
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}
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spec.Devices = updatedDevices
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return nil
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}
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