extends Node
const URLParser = preload('../utils/URLParser.gd')
class_name HyperGateway
signal starting_gateway()
signal started_gateway(pid)
signal started_download(version)
signal finished_download(version)
export var writable: bool = true
export var persist: bool = true
export var autoStart: bool = true
export var autoDownload: bool = true
export var autoUpdate: bool = false
const DEFAULT_PORT = 4973
export var port: int = DEFAULT_PORT
export var storageDirectory: String = "user://gateway-data/"
export var repositoryName: String = "rangermauve/hyper-gateway"
export var tagStart: String = "v2"
## TODO: Use this tag if the `latest` release doesn't match the tag?
# export var defaultTag = "v2.1.3"
var processPID = 0
var latestInfoRequest = HTTPRequest.new()
var downloadFileRequest = HTTPRequest.new()
var downloadingVersion = null
var downloadThread = null
func _exit_tree():
cleanupGateway()
func _notification(what):
if what == MainLoop.NOTIFICATION_WM_QUIT_REQUEST:
cleanupGateway()
# Called when the node enters the scene tree for the first time.
func _ready():
ensureStorageLocation()
add_child(latestInfoRequest)
latestInfoRequest.connect("request_completed", self, "_on_got_latest")
add_child(downloadFileRequest)
downloadFileRequest.connect("request_completed", self, "_on_finished_download")
if autoStart:
start()
func start():
autoStart = true
if autoDownload:
ensureDownloaded()
else: ensureSetup()
func cleanupGateway():
if processPID == 0:
print('Gateway already closed ' + str(processPID))
return
print('Cleaning up gateway ' + str(processPID))
return OS.kill(processPID)
func setupGateway():
emit_signal("starting_gateway")
var executiblePath = getExecutiblePath()
var path = ProjectSettings.globalize_path(executiblePath)
var args = ["run"]
if !persist: args.append('--no-persist')
if writable: args.append('--writable')
if port != DEFAULT_PORT:
args.append('--port')
args.append(String(port))
var resolvedStorageDirectory = ProjectSettings.globalize_path(storageDirectory)
args.append('--storage-location')
args.append(resolvedStorageDirectory)
print("Starting gateway from ",path, " with args ", args)
# Start the hyper-gateway in a process
processPID = OS.execute(path, args, false)
# Sleep for a bit while the gateway loads
# TODO: Find a better indicator like polling the HTTP server socket
OS.delay_msec(2000)
print("Started gateway at " + str(processPID))
emit_signal("started_gateway", processPID)
func ensureSetup():
if processPID != 0: return
setupGateway()
func getExecutibleName():
var name = OS.get_name()
if name == 'X11': return "hyper-gateway-linux"
if name == 'OSX': return "hyper-gateway-macos"
if name == 'Windows': return "hyper-gateway-windows.exe"
push_error("Can not start gateway, invalid operating system " + name)
func getCurrentVersion():
var file = File.new()
var err = file.open(getVersionFilePath(), File.READ)
if err != OK:
printerr('No existing binary version found', err)
return ""
var version = file.get_as_text()
file.close()
return version
func saveCurrentVersion(version):
var file = File.new()
file.open(getVersionFilePath(), File.WRITE)
file.store_string(version)
file.close()
func getVersionFilePath():
return storageDirectory + 'version.txt'
func getExecutiblePath():
var executibleName = getExecutibleName()
return storageDirectory + executibleName
func ensureStorageLocation():
var dir = Directory.new()
var err = dir.make_dir_recursive(storageDirectory)
if err != OK:
printerr("Unable to create storage directory ", err)
func hasBinary():
var version = getCurrentVersion()
return version && version.length()
func ensureDownloaded():
if autoUpdate || !hasBinary():
checkLatestVersion()
elif autoStart:
ensureSetup()
func checkLatestVersion():
var url = latestURL()
print('Getting latest version from ' + url)
latestInfoRequest.request(url, [], true, HTTPClient.METHOD_GET)
func _on_got_latest(_result, response_code, _headers, body):
print('Latest info response', response_code)
var parsed = JSON.parse(body.get_string_from_utf8())
if parsed.error != OK:
printerr("Unable to parse latest version from GitHub:", parsed.error_string)
return
var info = parsed.result
var newVersion = info.tag_name
print('Latest version:', newVersion)
var existing = getCurrentVersion()
if newVersion != existing: downloadLatest(info.assets, newVersion)
elif autoStart: ensureSetup()
func downloadLatest(assets, version):
var toDownload = null
var executibleName = getExecutibleName()
for asset in assets:
if asset.name != executibleName: continue
toDownload = asset
if !toDownload:
printerr("Unable to find valid executible in latest release")
return
var fromURL = toDownload.browser_download_url
var toPath = getExecutiblePath()
print('Downloading latest binary:',fromURL)
downloadFileRequest.set_download_file(toPath)
downloadingVersion = version
emit_signal("started_download", version)
downloadFileRequest.request(fromURL, [], true,HTTPClient.METHOD_GET)
func _on_finished_download(_result, response_code, _headers, _body):
var executiblePath = getExecutiblePath()
var path = ProjectSettings.globalize_path(executiblePath)
var os = OS.get_name()
# Mark file as executible if not on Windows
if os != "Windows":
OS.execute("chmod", ["+x", path])
print("Finished download ", response_code)
saveCurrentVersion(downloadingVersion)
emit_signal("finished_download", downloadingVersion)
if autoStart: ensureSetup()
func repoURL():
return "https://api.github.com/repos/" + repositoryName + "/"
func latestURL():
return repoURL() + "releases/latest"