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65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
import hashlib
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import os
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import threading
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# Moved in Python 2 -> 3, used only here.
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# Not adding to dvc.utils.compat to not load http.server for non-test runs.
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try:
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from http.server import HTTPServer
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except ImportError:
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from BaseHTTPServer import HTTPServer
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from RangeHTTPServer import RangeRequestHandler
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class TestRequestHandler(RangeRequestHandler):
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checksum_header = None
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def end_headers(self):
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# RangeRequestHandler only sends Accept-Ranges header if Range header
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# is present, see https://github.com/danvk/RangeHTTPServer/issues/23
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if not self.headers.get("Range"):
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self.send_header("Accept-Ranges", "bytes")
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# Add a checksum header
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if self.checksum_header:
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file = self.translate_path(self.path)
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if not os.path.isdir(file) and os.path.exists(file):
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with open(file, "r") as fd:
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encoded_text = fd.read().encode("utf8")
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checksum = hashlib.md5(encoded_text).hexdigest()
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self.send_header(self.checksum_header, checksum)
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RangeRequestHandler.end_headers(self)
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class ETagHandler(TestRequestHandler):
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checksum_header = "ETag"
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class ContentMD5Handler(TestRequestHandler):
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checksum_header = "Content-MD5"
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class StaticFileServer:
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_lock = threading.Lock()
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def __init__(self, handler_class=ETagHandler):
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self._lock.acquire()
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self.response_handler = handler_class
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self._httpd = HTTPServer(("localhost", 0), handler_class)
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self._thread = None
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def __enter__(self):
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self._thread = threading.Thread(target=self._httpd.serve_forever)
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self._thread.daemon = True
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self._thread.start()
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return self._httpd
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def __exit__(self, *args):
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self._httpd.socket.close()
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self._httpd.shutdown()
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self._httpd.server_close()
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self._lock.release()
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