forked from containerd/containerd
/
config.go
92 lines (81 loc) · 2.36 KB
/
config.go
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package server
import (
"bytes"
"io"
"github.com/BurntSushi/toml"
"github.com/containerd/containerd/errdefs"
"github.com/pkg/errors"
)
// Config provides containerd configuration data for the server
type Config struct {
// Root is the path to a directory where containerd will store persistent data
Root string `toml:"root"`
// State is the path to a directory where containerd will store transient data
State string `toml:"state"`
// GRPC configuration settings
GRPC GRPCConfig `toml:"grpc"`
// Debug and profiling settings
Debug Debug `toml:"debug"`
// Metrics and monitoring settings
Metrics MetricsConfig `toml:"metrics"`
// Plugins provides plugin specific configuration for the initialization of a plugin
Plugins map[string]toml.Primitive `toml:"plugins"`
// OOMScore adjust the containerd's oom score
OOMScore int `toml:"oom_score"`
// Cgroup specifies cgroup information for the containerd daemon process
Cgroup CgroupConfig `toml:"cgroup"`
md toml.MetaData
}
// GRPCConfig provides GRPC configuration for the socket
type GRPCConfig struct {
Address string `toml:"address"`
UID int `toml:"uid"`
GID int `toml:"gid"`
}
// Debug provides debug configuration
type Debug struct {
Address string `toml:"address"`
UID int `toml:"uid"`
GID int `toml:"gid"`
Level string `toml:"level"`
}
// MetricsConfig provides metrics configuration
type MetricsConfig struct {
Address string `toml:"address"`
}
// CgroupConfig provides cgroup configuration
type CgroupConfig struct {
Path string `toml:"path"`
}
// Decode unmarshals a plugin specific configuration by plugin id
func (c *Config) Decode(id string, v interface{}) (interface{}, error) {
data, ok := c.Plugins[id]
if !ok {
return v, nil
}
if err := c.md.PrimitiveDecode(data, v); err != nil {
return nil, err
}
return v, nil
}
// WriteTo marshals the config to the provided writer
func (c *Config) WriteTo(w io.Writer) (int64, error) {
buf := bytes.NewBuffer(nil)
e := toml.NewEncoder(buf)
if err := e.Encode(c); err != nil {
return 0, err
}
return io.Copy(w, buf)
}
// LoadConfig loads the containerd server config from the provided path
func LoadConfig(path string, v *Config) error {
if v == nil {
return errors.Wrapf(errdefs.ErrInvalidArgument, "argument v must not be nil")
}
md, err := toml.DecodeFile(path, v)
if err != nil {
return err
}
v.md = md
return nil
}