Initial Dever 0.0.1

test/development/server.py

@@ -0,0 +1,61 @@
+"""仅为安装验收控制下载边界；工具链内容仍来自官方源。"""
+
+from functools import partial
+from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
+from pathlib import Path
+import threading
+import time
+
+
+WORK = Path('/work')
+lock = threading.Lock()
+active = 0
+
+
+class Handler(SimpleHTTPRequestHandler):
+    def do_GET(self):
+        global active
+        environment = self.path.startswith(('/dist/', '/dever-native-'))
+        if environment and (WORK / 'reject-environment').exists():
+            self.send_error(404, 'intentional preparation failure')
+            return
+        archive = environment and self.path.endswith('.tar.xz')
+        if archive:
+            with lock:
+                active += 1
+                if active >= 2:
+                    (WORK / 'parallel-downloads').touch()
+            try:
+                while (WORK / 'hold-environment').exists():
+                    time.sleep(0.1)
+                self.download()
+            finally:
+                with lock:
+                    active -= 1
+        else:
+            self.download()
+
+    def download(self):
+        if self.path.startswith('/dist/'):
+            self.send_response(302)
+            self.send_header('Location', 'https://static.rust-lang.org' + self.path)
+            self.end_headers()
+            return
+        resume = self.headers.get('Range')
+        if resume and self.path.startswith('/dever-native-'):
+            offset = int(resume.removeprefix('bytes=').removesuffix('-'))
+            path = Path(self.translate_path(self.path))
+            size = path.stat().st_size
+            (WORK / 'resumed-offset').write_text(str(offset))
+            self.send_response(206)
+            self.send_header('Content-Range', f'bytes {offset}-{size - 1}/{size}')
+            self.send_header('Content-Length', str(size - offset))
+            self.end_headers()
+            with path.open('rb') as source:
+                source.seek(offset)
+                self.copyfile(source, self.wfile)
+            return
+        super().do_GET()
+
+
+ThreadingHTTPServer(('127.0.0.1', 18080), partial(Handler, directory='/work/assets')).serve_forever()