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package docker
import (
"fmt"
"os"
"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/config"
"github.com/hashicorp/packer/packer"
"github.com/hashicorp/packer/template/interpolate"
"github.com/mitchellh/mapstructure"
)
var (
errArtifactNotUsed = fmt.Errorf("No instructions given for handling the artifact; expected commit, discard, or export_path")
errArtifactUseConflict = fmt.Errorf("Cannot specify more than one of commit, discard, and export_path")
errExportPathNotFile = fmt.Errorf("export_path must be a file, not a directory")
errImageNotSpecified = fmt.Errorf("Image must be specified")
)
type Config struct {
common.PackerConfig `mapstructure:",squash"`
Comm communicator.Config `mapstructure:",squash"`
Commit bool
Discard bool
ExportPath string `mapstructure:"export_path"`
Image string
Pty bool
Pull bool
RunCommand []string `mapstructure:"run_command"`
Volumes map[string]string
Privileged bool `mapstructure:"privileged"`
Author string
Changes []string
Message string
ContainerDir string `mapstructure:"container_dir"`
// This is used to login to dockerhub to pull a private base container. For
// pushing to dockerhub, see the docker post-processors
Login bool
LoginEmail string `mapstructure:"login_email"`
LoginPassword string `mapstructure:"login_password"`
LoginServer string `mapstructure:"login_server"`
LoginUsername string `mapstructure:"login_username"`
EcrLogin bool `mapstructure:"ecr_login"`
AwsAccessConfig `mapstructure:",squash"`
ctx interpolate.Context
}
func NewConfig(raws ...interface{}) (*Config, []string, error) {
c := new(Config)
var md mapstructure.Metadata
err := config.Decode(c, &config.DecodeOpts{
Metadata: &md,
Interpolate: true,
InterpolateContext: &c.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{
"run_command",
},
},
}, raws...)
if err != nil {
return nil, nil, err
}
// Defaults
if len(c.RunCommand) == 0 {
c.RunCommand = []string{"-d", "-i", "-t", "{{.Image}}", "/bin/bash"}
}
// Default Pull if it wasn't set
hasPull := false
for _, k := range md.Keys {
if k == "Pull" {
hasPull = true
break
}
}
if !hasPull {
c.Pull = true
}
// Default to the normal Docker type
if c.Comm.Type == "" {
c.Comm.Type = "docker"
}
var errs *packer.MultiError
if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
errs = packer.MultiErrorAppend(errs, es...)
}
if c.Image == "" {
errs = packer.MultiErrorAppend(errs, errImageNotSpecified)
}
if (c.ExportPath != "" && c.Commit) || (c.ExportPath != "" && c.Discard) || (c.Commit && c.Discard) {
errs = packer.MultiErrorAppend(errs, errArtifactUseConflict)
}
if c.ExportPath == "" && !c.Commit && !c.Discard {
errs = packer.MultiErrorAppend(errs, errArtifactNotUsed)
}
if c.ExportPath != "" {
if fi, err := os.Stat(c.ExportPath); err == nil && fi.IsDir() {
errs = packer.MultiErrorAppend(errs, errExportPathNotFile)
}
}
if c.ContainerDir == "" {
c.ContainerDir = "/packer-files"
}
if c.EcrLogin && c.LoginServer == "" {
errs = packer.MultiErrorAppend(errs, fmt.Errorf("ECR login requires login server to be provided."))
}
if errs != nil && len(errs.Errors) > 0 {
return nil, nil, errs
}
return c, nil, nil
}
|