cri-o/server/config.go
baude 266fc193e7 Make kpod parse configuration file
kpod must parse the crio configuration file or the storage
is not set up correctly.  By default it is not.  We now read
/etc/crio/crio.conf in as the configuration file unless it is
overriden by the user and the global -c|--config switch.

Signed-off-by: baude <bbaude@redhat.com>
2017-09-01 11:14:40 -05:00

112 lines
3 KiB
Go

package server
import (
"bytes"
"io/ioutil"
"github.com/BurntSushi/toml"
"github.com/kubernetes-incubator/cri-o/libkpod"
)
//CrioConfigPath is the default location for the conf file
const CrioConfigPath = "/etc/crio/crio.conf"
// Config represents the entire set of configuration values that can be set for
// the server. This is intended to be loaded from a toml-encoded config file.
type Config struct {
libkpod.Config
APIConfig
}
// APIConfig represents the "crio.api" TOML config table.
type APIConfig struct {
// Listen is the path to the AF_LOCAL socket on which cri-o will listen.
// This may support proto://addr formats later, but currently this is just
// a path.
Listen string `toml:"listen"`
// StreamAddress is the IP address on which the stream server will listen.
StreamAddress string `toml:"stream_address"`
// StreamPort is the port on which the stream server will listen.
StreamPort string `toml:"stream_port"`
}
// tomlConfig is another way of looking at a Config, which is
// TOML-friendly (it has all of the explicit tables). It's just used for
// conversions.
type tomlConfig struct {
Crio struct {
libkpod.RootConfig
API struct{ APIConfig } `toml:"api"`
Runtime struct{ libkpod.RuntimeConfig } `toml:"runtime"`
Image struct{ libkpod.ImageConfig } `toml:"image"`
Network struct{ libkpod.NetworkConfig } `toml:"network"`
} `toml:"crio"`
}
func (t *tomlConfig) toConfig(c *Config) {
c.RootConfig = t.Crio.RootConfig
c.APIConfig = t.Crio.API.APIConfig
c.RuntimeConfig = t.Crio.Runtime.RuntimeConfig
c.ImageConfig = t.Crio.Image.ImageConfig
c.NetworkConfig = t.Crio.Network.NetworkConfig
}
func (t *tomlConfig) fromConfig(c *Config) {
t.Crio.RootConfig = c.RootConfig
t.Crio.API.APIConfig = c.APIConfig
t.Crio.Runtime.RuntimeConfig = c.RuntimeConfig
t.Crio.Image.ImageConfig = c.ImageConfig
t.Crio.Network.NetworkConfig = c.NetworkConfig
}
// UpdateFromFile populates the Config from the TOML-encoded file at the given path.
// Returns errors encountered when reading or parsing the files, or nil
// otherwise.
func (c *Config) UpdateFromFile(path string) error {
data, err := ioutil.ReadFile(path)
if err != nil {
return err
}
t := new(tomlConfig)
t.fromConfig(c)
_, err = toml.Decode(string(data), t)
if err != nil {
return err
}
t.toConfig(c)
return nil
}
// ToFile outputs the given Config as a TOML-encoded file at the given path.
// Returns errors encountered when generating or writing the file, or nil
// otherwise.
func (c *Config) ToFile(path string) error {
var w bytes.Buffer
e := toml.NewEncoder(&w)
t := new(tomlConfig)
t.fromConfig(c)
if err := e.Encode(*t); err != nil {
return err
}
return ioutil.WriteFile(path, w.Bytes(), 0644)
}
// DefaultConfig returns the default configuration for crio.
func DefaultConfig() *Config {
return &Config{
Config: *libkpod.DefaultConfig(),
APIConfig: APIConfig{
Listen: "/var/run/crio.sock",
StreamAddress: "",
StreamPort: "10010",
},
}
}