nvidia-container-toolkit/pkg/config/engine/engine.go
Tariq Ibrahim f477dc0df1
fetch current container runtime config through the command line
Signed-off-by: Tariq Ibrahim <tibrahim@nvidia.com>

add default runtime binary path to runtimes field of toolkit config toml

Signed-off-by: Tariq Ibrahim <tibrahim@nvidia.com>

[no-relnote] Get low-level runtimes consistently

We ensure that we use the same low-level runtimes regardless
of the runtime engine being configured. This ensures consistent
behaviour.

Signed-off-by: Evan Lezar <elezar@nvidia.com>

Co-authored-by: Evan Lezar <elezar@nvidia.com>

address review comment

Signed-off-by: Tariq Ibrahim <tibrahim@nvidia.com>
2024-10-10 01:13:20 -07:00

64 lines
1.9 KiB
Go

/**
# Copyright 2024 NVIDIA CORPORATION
#
# 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 engine
import "strings"
// GetBinaryPathsForRuntimes returns the list of binary paths for common runtimes.
// The following list of runtimes is considered:
//
// the default runtime, "runc", and "crun"
//
// If an nvidia* runtime is set as the default runtime, this is ignored.
func GetBinaryPathsForRuntimes(cfg Interface) []string {
var binaryPaths []string
seen := make(map[string]bool)
for _, runtime := range GetLowLevelRuntimes(cfg) {
runtimeConfig, err := cfg.GetRuntimeConfig(runtime)
if err != nil {
// TODO: It will be useful to log the error when GetRuntimeConfig fails for a runtime
continue
}
binaryPath := runtimeConfig.GetBinaryPath()
if binaryPath == "" || seen[binaryPath] {
continue
}
seen[binaryPath] = true
binaryPaths = append(binaryPaths, binaryPath)
}
return binaryPaths
}
// GetLowLevelRuntimes returns a predefined list low-level runtimes from the specified config.
// nvidia* runtimes are ignored.
func GetLowLevelRuntimes(cfg Interface) []string {
var runtimes []string
isValidDefault := func(s string) bool {
if s == "" {
return false
}
// ignore nvidia* runtimes.
return !strings.HasPrefix(s, "nvidia")
}
if defaultRuntime := cfg.DefaultRuntime(); isValidDefault(defaultRuntime) {
runtimes = append(runtimes, defaultRuntime)
}
return append(runtimes, "runc", "crun")
}