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options.go
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options.go
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package options
import (
"fmt"
"os"
)
var (
PPS_DEFAULT_REGION = "PPS_DEFAULT_REGION"
PPS_MACHINE_TYPE = "PPS_MACHINE_TYPE"
PPS_IMAGE = "PPS_IMAGE"
PPS_DISK_SIZE = "PPS_DISK_SIZE"
PPS_MACHINE_NAME = "PPS_MACHINE_NAME"
PPS_MACHINE_TEMPLATE = "PPS_MACHINE_TEMPLATE"
MACHINE_ID = "MACHINE_ID"
SSH_FOLDER = "SSH_FOLDER"
)
type Options struct {
Image string
MachineType string
DiskSizeGB string
Region string
MachineID string
MachineTemplate string
SSHFolder string
}
func ConfigFromEnv() (Options, error) {
return Options{
Image: os.Getenv(PPS_IMAGE),
MachineType: os.Getenv(PPS_MACHINE_TYPE),
Region: os.Getenv(PPS_DEFAULT_REGION),
}, nil
}
func FromEnv(init bool) (*Options, error) {
retOptions := &Options{}
var err error
retOptions.Image, err = fromEnvOrError(PPS_IMAGE)
if err != nil {
return nil, err
}
retOptions.DiskSizeGB, err = fromEnvOrError(PPS_DISK_SIZE)
if err != nil {
return nil, err
}
retOptions.MachineType, err = fromEnvOrError(PPS_MACHINE_TYPE)
if err != nil {
return nil, err
}
retOptions.Region, err = fromEnvOrError(PPS_DEFAULT_REGION)
if err != nil {
return nil, err
}
retOptions.SSHFolder, err = fromEnvOrError(SSH_FOLDER)
if err != nil {
return nil, err
}
// Return early if we're just doing init
if init {
return retOptions, nil
}
retOptions.MachineID, err = fromEnvOrError(MACHINE_ID)
if err != nil {
return nil, err
}
// prefix with devpod-
retOptions.MachineID = "devpod-" + retOptions.MachineID
retOptions.MachineTemplate, err = fromEnvOrError(PPS_MACHINE_TEMPLATE)
if err != nil {
return nil, err
}
return retOptions, nil
}
func fromEnvOrError(name string) (string, error) {
val := os.Getenv(name)
if val == "" {
return "", fmt.Errorf(
"couldn't find option %s in environment, please make sure %s is defined",
name,
name,
)
}
return val, nil
}