mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-28 23:17:24 +00:00
134 lines
3.4 KiB
Go
134 lines
3.4 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 operator
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import "path/filepath"
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const (
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defaultRuntimeName = "nvidia"
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defaultRoot = "/usr/bin"
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)
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// Runtime defines a runtime to be configured.
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// The path and whether the runtime is the default runtime can be specified
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type Runtime struct {
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name string
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Path string
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SetAsDefault bool
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}
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// Runtimes defines a set of runtimes to be configured for use in the GPU Operator
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type Runtimes map[string]Runtime
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type config struct {
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root string
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nvidiaRuntimeName string
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setAsDefault bool
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}
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// GetRuntimes returns the set of runtimes to be configured for use with the GPU Operator.
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func GetRuntimes(opts ...Option) Runtimes {
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c := &config{}
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for _, opt := range opts {
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opt(c)
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}
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if c.root == "" {
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c.root = defaultRoot
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}
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if c.nvidiaRuntimeName == "" {
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c.nvidiaRuntimeName = defaultRuntimeName
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}
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runtimes := make(Runtimes)
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runtimes.add(c.nvidiaRuntime())
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modes := []string{"cdi", "legacy"}
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for _, mode := range modes {
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runtimes.add(c.modeRuntime(mode))
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}
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return runtimes
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}
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// DefaultRuntimeName returns the name of the default runtime.
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func (r Runtimes) DefaultRuntimeName() string {
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for _, runtime := range r {
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if runtime.SetAsDefault {
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return runtime.name
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}
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}
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return ""
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}
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// Add a runtime to the set of runtimes.
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func (r Runtimes) add(runtime Runtime) {
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r[runtime.name] = runtime
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}
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// nvidiaRuntime creates a runtime that corresponds to the nvidia runtime.
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// If name is equal to one of the predefined runtimes, `nvidia` is used as the runtime name instead.
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func (c config) nvidiaRuntime() Runtime {
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predefinedRuntimes := map[string]struct{}{
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"nvidia-cdi": {},
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"nvidia-legacy": {},
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}
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name := c.nvidiaRuntimeName
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if _, isPredefinedRuntime := predefinedRuntimes[name]; isPredefinedRuntime {
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name = defaultRuntimeName
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}
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return c.newRuntime(name, "nvidia-container-runtime")
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}
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// modeRuntime creates a runtime for the specified mode.
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func (c config) modeRuntime(mode string) Runtime {
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return c.newRuntime("nvidia-"+mode, "nvidia-container-runtime."+mode)
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}
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// newRuntime creates a runtime based on the configuration
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func (c config) newRuntime(name string, binary string) Runtime {
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return Runtime{
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name: name,
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Path: filepath.Join(c.root, binary),
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SetAsDefault: c.setAsDefault && name == c.nvidiaRuntimeName,
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}
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}
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// Option is a functional option for configuring set of runtimes.
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type Option func(*config)
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// WithRoot sets the root directory for the runtime binaries.
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func WithRoot(root string) Option {
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return func(c *config) {
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c.root = root
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}
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}
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// WithNvidiaRuntimeName sets the name of the nvidia runtime.
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func WithNvidiaRuntimeName(name string) Option {
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return func(c *config) {
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c.nvidiaRuntimeName = name
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}
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}
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// WithSetAsDefault sets the default runtime to the nvidia runtime.
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func WithSetAsDefault(set bool) Option {
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return func(c *config) {
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c.setAsDefault = set
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}
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}
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