/
config.go
266 lines (222 loc) · 7.25 KB
/
config.go
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package oci
import (
"encoding/base64"
"errors"
"fmt"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
"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"
ocicommon "github.com/oracle/oci-go-sdk/common"
"github.com/mitchellh/go-homedir"
)
type Config struct {
common.PackerConfig `mapstructure:",squash"`
Comm communicator.Config `mapstructure:",squash"`
ConfigProvider ocicommon.ConfigurationProvider
AccessCfgFile string `mapstructure:"access_cfg_file"`
AccessCfgFileAccount string `mapstructure:"access_cfg_file_account"`
// Access config overrides
UserID string `mapstructure:"user_ocid"`
TenancyID string `mapstructure:"tenancy_ocid"`
Region string `mapstructure:"region"`
Fingerprint string `mapstructure:"fingerprint"`
KeyFile string `mapstructure:"key_file"`
PassPhrase string `mapstructure:"pass_phrase"`
UsePrivateIP bool `mapstructure:"use_private_ip"`
AvailabilityDomain string `mapstructure:"availability_domain"`
CompartmentID string `mapstructure:"compartment_ocid"`
// Image
BaseImageID string `mapstructure:"base_image_ocid"`
Shape string `mapstructure:"shape"`
ImageName string `mapstructure:"image_name"`
// Instance
InstanceName string `mapstructure:"instance_name"`
// Metadata optionally contains custom metadata key/value pairs provided in the
// configuration. While this can be used to set metadata["user_data"] the explicit
// "user_data" and "user_data_file" values will have precedence.
// An instance's metadata can be obtained from at http://169.254.169.254 on the
// launched instance.
Metadata map[string]string `mapstructure:"metadata"`
// UserData and UserDataFile file are both optional and mutually exclusive.
UserData string `mapstructure:"user_data"`
UserDataFile string `mapstructure:"user_data_file"`
// Networking
SubnetID string `mapstructure:"subnet_ocid"`
// Tagging
Tags map[string]string `mapstructure:"tags"`
ctx interpolate.Context
}
func NewConfig(raws ...interface{}) (*Config, error) {
c := &Config{}
// Decode from template
err := config.Decode(c, &config.DecodeOpts{
Interpolate: true,
InterpolateContext: &c.ctx,
}, raws...)
if err != nil {
return nil, fmt.Errorf("Failed to mapstructure Config: %+v", err)
}
// Determine where the SDK config is located
if c.AccessCfgFile == "" {
c.AccessCfgFile, err = getDefaultOCISettingsPath()
if err != nil {
log.Println("Default OCI settings file not found")
}
}
if c.AccessCfgFileAccount == "" {
c.AccessCfgFileAccount = "DEFAULT"
}
var keyContent []byte
if c.KeyFile != "" {
path, err := homedir.Expand(c.KeyFile)
if err != nil {
return nil, err
}
// Read API signing key
keyContent, err = ioutil.ReadFile(path)
if err != nil {
return nil, err
}
}
fileProvider, _ := ocicommon.ConfigurationProviderFromFileWithProfile(c.AccessCfgFile, c.AccessCfgFileAccount, c.PassPhrase)
if c.Region == "" {
var region string
if fileProvider != nil {
region, _ = fileProvider.Region()
}
if region == "" {
c.Region = "us-phoenix-1"
}
}
providers := []ocicommon.ConfigurationProvider{
NewRawConfigurationProvider(c.TenancyID, c.UserID, c.Region, c.Fingerprint, string(keyContent), &c.PassPhrase),
}
if fileProvider != nil {
providers = append(providers, fileProvider)
}
// Load API access configuration from SDK
configProvider, err := ocicommon.ComposingConfigurationProvider(providers)
if err != nil {
return nil, err
}
var errs *packer.MultiError
if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
errs = packer.MultiErrorAppend(errs, es...)
}
if userOCID, _ := configProvider.UserOCID(); userOCID == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'user_ocid' must be specified"))
}
tenancyOCID, _ := configProvider.TenancyOCID()
if tenancyOCID == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'tenancy_ocid' must be specified"))
}
if fingerprint, _ := configProvider.KeyFingerprint(); fingerprint == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'fingerprint' must be specified"))
}
if _, err := configProvider.PrivateRSAKey(); err != nil {
errs = packer.MultiErrorAppend(
errs, errors.New("'key_file' must be specified"))
}
c.ConfigProvider = configProvider
if c.AvailabilityDomain == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'availability_domain' must be specified"))
}
if c.CompartmentID == "" && tenancyOCID != "" {
c.CompartmentID = tenancyOCID
}
if c.Shape == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'shape' must be specified"))
}
if c.SubnetID == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'subnet_ocid' must be specified"))
}
if c.BaseImageID == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("'base_image_ocid' must be specified"))
}
// Validate tag lengths. TODO (hlowndes) maximum number of tags allowed.
if c.Tags != nil {
for k, v := range c.Tags {
k = strings.TrimSpace(k)
v = strings.TrimSpace(v)
if len(k) > 100 {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("Tag key length too long. Maximum 100 but found %d. Key: %s", len(k), k))
}
if len(k) == 0 {
errs = packer.MultiErrorAppend(
errs, errors.New("Tag key empty in config"))
}
if len(v) > 100 {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("Tag value length too long. Maximum 100 but found %d. Key: %s", len(v), k))
}
if len(v) == 0 {
errs = packer.MultiErrorAppend(
errs, errors.New("Tag value empty in config"))
}
}
}
if c.ImageName == "" {
name, err := interpolate.Render("packer-{{timestamp}}", nil)
if err != nil {
errs = packer.MultiErrorAppend(errs,
fmt.Errorf("unable to parse image name: %s", err))
} else {
c.ImageName = name
}
}
// Optional UserData config
if c.UserData != "" && c.UserDataFile != "" {
errs = packer.MultiErrorAppend(errs, fmt.Errorf("Only one of user_data or user_data_file can be specified."))
} else if c.UserDataFile != "" {
if _, err := os.Stat(c.UserDataFile); err != nil {
errs = packer.MultiErrorAppend(errs, fmt.Errorf("user_data_file not found: %s", c.UserDataFile))
}
}
// read UserDataFile into string.
if c.UserDataFile != "" {
fiData, err := ioutil.ReadFile(c.UserDataFile)
if err != nil {
errs = packer.MultiErrorAppend(errs, fmt.Errorf("Problem reading user_data_file: %s", err))
}
c.UserData = string(fiData)
}
// Test if UserData is encoded already, and if not, encode it
if c.UserData != "" {
if _, err := base64.StdEncoding.DecodeString(c.UserData); err != nil {
log.Printf("[DEBUG] base64 encoding user data...")
c.UserData = base64.StdEncoding.EncodeToString([]byte(c.UserData))
}
}
if errs != nil && len(errs.Errors) > 0 {
return nil, errs
}
return c, nil
}
// getDefaultOCISettingsPath uses mitchellh/go-homedir to compute the default
// config file location ($HOME/.oci/config).
func getDefaultOCISettingsPath() (string, error) {
home, err := homedir.Dir()
if err != nil {
return "", err
}
path := filepath.Join(home, ".oci", "config")
if _, err := os.Stat(path); err != nil {
return "", err
}
return path, nil
}