nvidia-container-toolkit/internal/config/runtime.go
Evan Lezar ba0e606df2 Use toml unmarshal to read runtime config
Signed-off-by: Evan Lezar <elezar@nvidia.com>
2022-05-12 10:28:56 +02:00

81 lines
2.1 KiB
Go

/**
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# 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 config
import (
"fmt"
"github.com/pelletier/go-toml"
"github.com/sirupsen/logrus"
)
const (
dockerRuncExecutableName = "docker-runc"
runcExecutableName = "runc"
)
// RuntimeConfig stores the config options for the NVIDIA Container Runtime
type RuntimeConfig struct {
DebugFilePath string `toml:"debug"`
Experimental bool `toml:"experimental"`
DiscoverMode string `toml:"discover-mode"`
// LogLevel defines the logging level for the application
LogLevel string `toml:"log-level"`
// Runtimes defines the candidates for the low-level runtime
Runtimes []string `toml:"runtimes"`
}
// dummy allows us to unmarshal only a RuntimeConfig from a *toml.Tree
type dummy struct {
Runtime RuntimeConfig `toml:"nvidia-container-runtime"`
}
// getRuntimeConfigFrom reads the nvidia container runtime config from the specified toml Tree.
func getRuntimeConfigFrom(toml *toml.Tree) (*RuntimeConfig, error) {
cfg := GetDefaultRuntimeConfig()
if toml == nil {
return cfg, nil
}
d := dummy{
Runtime: *cfg,
}
if err := toml.Unmarshal(&d); err != nil {
return nil, fmt.Errorf("failed to unmarshal runtime config: %v", err)
}
return &d.Runtime, nil
}
// GetDefaultRuntimeConfig defines the default values for the config
func GetDefaultRuntimeConfig() *RuntimeConfig {
c := RuntimeConfig{
DebugFilePath: "/dev/null",
Experimental: false,
DiscoverMode: "auto",
LogLevel: logrus.InfoLevel.String(),
Runtimes: []string{
dockerRuncExecutableName,
runcExecutableName,
},
}
return &c
}