wings/installer/installer.go

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package installer
import (
"context"
"encoding/json"
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"emperror.dev/errors"
"github.com/asaskevich/govalidator"
"github.com/buger/jsonparser"
"github.com/pterodactyl/wings/environment"
"github.com/pterodactyl/wings/remote"
"github.com/pterodactyl/wings/server"
)
type Installer struct {
server *server.Server
}
// New validates the received data to ensure that all of the required fields
// have been passed along in the request. This should be manually run before
// calling Execute().
func New(ctx context.Context, manager *server.Manager, data []byte) (*Installer, error) {
if !govalidator.IsUUIDv4(getString(data, "uuid")) {
return nil, NewValidationError("uuid provided was not in a valid format")
}
cfg := &server.Configuration{
Uuid: getString(data, "uuid"),
Suspended: false,
Invocation: getString(data, "invocation"),
SkipEggScripts: getBoolean(data, "skip_egg_scripts"),
StartOnCompletion: getBoolean(data, "start_on_completion"),
Build: environment.Limits{
MemoryLimit: getInt(data, "build", "memory"),
Swap: getInt(data, "build", "swap"),
IoWeight: uint16(getInt(data, "build", "io")),
CpuLimit: getInt(data, "build", "cpu"),
DiskSpace: getInt(data, "build", "disk"),
Threads: getString(data, "build", "threads"),
},
CrashDetectionEnabled: true,
}
cfg.Allocations.DefaultMapping.Ip = getString(data, "allocations", "default", "ip")
cfg.Allocations.DefaultMapping.Port = int(getInt(data, "allocations", "default", "port"))
// Unmarshal the environment variables from the request into the server struct.
if b, _, _, err := jsonparser.Get(data, "environment"); err != nil {
return nil, errors.WithStackIf(err)
} else {
cfg.EnvVars = make(environment.Variables)
if err := json.Unmarshal(b, &cfg.EnvVars); err != nil {
return nil, errors.WrapIf(err, "installer: could not unmarshal environment variables for server")
}
}
// Unmarshal the allocation mappings from the request into the server struct.
if b, _, _, err := jsonparser.Get(data, "allocations", "mappings"); err != nil {
return nil, errors.WithStackIf(err)
} else {
cfg.Allocations.Mappings = make(map[string][]int)
if err := json.Unmarshal(b, &cfg.Allocations.Mappings); err != nil {
return nil, errors.Wrap(err, "installer: could not unmarshal allocation mappings")
}
}
cfg.Container.Image = getString(data, "container", "image")
c, err := manager.Client().GetServerConfiguration(ctx, cfg.Uuid)
if err != nil {
if !remote.IsRequestError(err) {
return nil, errors.WithStackIf(err)
}
return nil, errors.WrapIf(err, "installer: could not get server configuration from remote API")
}
// Create a new server instance using the configuration we wrote to the disk
// so that everything gets instantiated correctly on the struct.
s, err := manager.InitServer(c)
if err != nil {
return nil, errors.WrapIf(err, "installer: could not init server instance")
}
return &Installer{server: s}, nil
}
// Uuid returns the UUID associated with this installer instance.
func (i *Installer) Uuid() string {
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return i.server.Id()
}
// Server returns the server instance.
func (i *Installer) Server() *server.Server {
return i.server
}
// Returns a string value from the JSON data provided.
func getString(data []byte, key ...string) string {
value, _ := jsonparser.GetString(data, key...)
return value
}
// Returns an int value from the JSON data provided.
func getInt(data []byte, key ...string) int64 {
value, _ := jsonparser.GetInt(data, key...)
return value
}
func getBoolean(data []byte, key ...string) bool {
value, _ := jsonparser.GetBoolean(data, key...)
return value
}