packer-cn/builder/lxc/config.go

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package lxc
import (
"fmt"
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"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/config"
"github.com/hashicorp/packer/packer"
"github.com/hashicorp/packer/template/interpolate"
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"github.com/mitchellh/mapstructure"
"os"
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"time"
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)
type Config struct {
common.PackerConfig `mapstructure:",squash"`
ConfigFile string `mapstructure:"config_file"`
OutputDir string `mapstructure:"output_directory"`
ContainerName string `mapstructure:"container_name"`
CommandWrapper string `mapstructure:"command_wrapper"`
RawInitTimeout string `mapstructure:"init_timeout"`
Name string `mapstructure:"template_name"`
Parameters []string `mapstructure:"template_parameters"`
EnvVars []string `mapstructure:"template_environment_vars"`
TargetRunlevel int `mapstructure:"target_runlevel"`
InitTimeout time.Duration
ctx interpolate.Context
}
func NewConfig(raws ...interface{}) (*Config, error) {
var c Config
var md mapstructure.Metadata
err := config.Decode(&c, &config.DecodeOpts{
Metadata: &md,
Interpolate: true,
}, raws...)
if err != nil {
return nil, err
}
// Accumulate any errors
var errs *packer.MultiError
if c.OutputDir == "" {
c.OutputDir = fmt.Sprintf("output-%s", c.PackerBuildName)
}
if c.ContainerName == "" {
c.ContainerName = fmt.Sprintf("packer-%s", c.PackerBuildName)
}
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if c.TargetRunlevel == 0 {
c.TargetRunlevel = 3
}
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if c.CommandWrapper == "" {
c.CommandWrapper = "{{.Command}}"
}
if c.RawInitTimeout == "" {
c.RawInitTimeout = "20s"
}
c.InitTimeout, err = time.ParseDuration(c.RawInitTimeout)
if err != nil {
errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed parsing init_timeout: %s", err))
}
if _, err := os.Stat(c.ConfigFile); os.IsNotExist(err) {
errs = packer.MultiErrorAppend(errs, fmt.Errorf("LXC Config file appears to be missing: %s", c.ConfigFile))
}
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if errs != nil && len(errs.Errors) > 0 {
return nil, errs
}
return &c, nil
}