5b3a48e73b
To be compatible with the io.RawIOBase interface the GZIPCompressedStream read method argument should be called `size` and have a default value of -1 meaning until EOF. See: https://docs.python.org/3/library/io.html#io.RawIOBase Change-Id: Ie8b4c77f6c730c91bb4d4997dcb7f9a9acde0f31
594 lines
21 KiB
Python
594 lines
21 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright 2014 Rackspace Australia
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# Copyright 2018-2019 Red Hat, Inc
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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"""
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Generic utilities used for log upload.
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"""
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import gzip
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import io
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import logging
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import mimetypes
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import os
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import shutil
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import stat
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import tempfile
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import time
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try:
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import urllib.parse as urlparse
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except ImportError:
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import urllib as urlparse
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import zlib
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import collections
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try:
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# Python 3.3+
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from collections.abc import Sequence
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except ImportError:
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from collections import Sequence
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mimetypes.init()
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mimetypes.add_type('text/plain', '.yaml')
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MAX_UPLOAD_THREADS = 24
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POST_ATTEMPTS = 3
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# Map mime types to apache icons
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APACHE_MIME_ICON_MAP = {
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'_default': 'unknown.png',
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'application/gzip': 'compressed.png',
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'application/directory': 'folder.png',
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'text/html': 'text.png',
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'text/plain': 'text.png',
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}
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# Map mime types to apache icons
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APACHE_FILE_ICON_MAP = {
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'..': 'back.png',
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}
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# These icon files are from the Apache project and are in the public
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# domain.
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ICON_IMAGES = {
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'back.png': 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWCAMAAAD3n0w0AAAAElBMVEX/'
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'///M//+ZmZlmZmYzMzMAAACei5rnAAAAAnRSTlP/AOW3MEoAAABWSURB'
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'VHjabdBBCgAhDEPRRpv7X3kwEMsQ//IRRC08urjRHbha5VLFUsVSxVI9'
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'lmDh5hMpHD6n0EgoiZG0DNINpnWlcVXaRix76e1/8dddcL6nG0Ri9gHj'
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'tgSXKYeLBgAAAABJRU5ErkJggg==',
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'compressed.png': 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWCAMAAAD3n0w0AAADAFBM'
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'VEX//////8z//5n//2b//zP//wD/zP//zMz/zJn/zGb/zDP/zAD/'
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'mf//mcz/mZn/mWb/mTP/mQD/Zv//Zsz/Zpn/Zmb/ZjP/ZgD/M///'
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'M8z/M5n/M2b/MzP/MwD/AP//AMz/AJn/AGb/ADP/AADM///M/8zM'
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'/5nM/2bM/zPM/wDMzP/MzMzMzJnMzGbMzDPMzADMmf/MmczMmZnM'
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'mWbMmTPMmQDMZv/MZszMZpnMZmbMZjPMZgDMM//MM8zMM5nMM2bM'
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'MzPMMwDMAP/MAMzMAJnMAGbMADPMAACZ//+Z/8yZ/5mZ/2aZ/zOZ'
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'/wCZzP+ZzMyZzJmZzGaZzDOZzACZmf+ZmcyZmZmZmWaZmTOZmQCZ'
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'Zv+ZZsyZZpmZZmaZZjOZZgCZM/+ZM8yZM5mZM2aZMzOZMwCZAP+Z'
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'AMyZAJmZAGaZADOZAABm//9m/8xm/5lm/2Zm/zNm/wBmzP9mzMxm'
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'zJlmzGZmzDNmzABmmf9mmcxmmZlmmWZmmTNmmQBmZv9mZsxmZplm'
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'ZmZmZjNmZgBmM/9mM8xmM5lmM2ZmMzNmMwBmAP9mAMxmAJlmAGZm'
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'ADNmAAAz//8z/8wz/5kz/2Yz/zMz/wAzzP8zzMwzzJkzzGYzzDMz'
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'zAAzmf8zmcwzmZkzmWYzmTMzmQAzZv8zZswzZpkzZmYzZjMzZgAz'
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'M/8zM8wzM5kzM2YzMzMzMwAzAP8zAMwzAJkzAGYzADMzAAAA//8A'
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'/8wA/5kA/2YA/zMA/wAAzP8AzMwAzJkAzGYAzDMAzAAAmf8AmcwA'
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'mZkAmWYAmTMAmQAAZv8AZswAZpkAZmYAZjMAZgAAM/8AM8wAM5kA'
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'M2YAMzMAMwAAAP8AAMwAAJkAAGYAADPuAADdAAC7AACqAACIAAB3'
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'AABVAABEAAAiAAARAAAA7gAA3QAAuwAAqgAAiAAAdwAAVQAARAAA'
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'IgAAEQAAAO4AAN0AALsAAKoAAIgAAHcAAFUAAEQAACIAABHu7u7d'
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'3d27u7uqqqqIiIh3d3dVVVVEREQiIiIREREAAAD7CIKZAAAAJXRS'
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'TlP///////////////////////////////////////////////8A'
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'P89CTwAAAGtJREFUeNp9z9ENgDAIhOEOco+dybVuEXasFMRDY/x5'
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'+xJCO6Znu6kSx7BhXyjtKBWWNlwW88Loid7hFRKBXiIYCMfMEYUQ'
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'QohC3CjFA5nIjqx1CqlDLGR/EhM5O06yvin0ftGOyIS7lV14AsQN'
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'aR7rMEBYAAAAAElFTkSuQmCC',
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'folder.png': 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWCAMAAAD3n0w0AAAAElBMVEX/'
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'////zJnM//+ZZjMzMzMAAADCEvqoAAAAA3RSTlP//wDXyg1BAAAASElE'
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'QVR42s3KQQ6AQAhDUaXt/a/sQDrRJu7c+NmQB0e99B3lnqjT6cYx6zSI'
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'bV40n3D7psYMoBoz4w8/EdNYQsbGEjNxYSljXTEsA9O1pLTvAAAAAElF'
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'TkSuQmCC',
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'text.png': 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWCAMAAAD3n0w0AAAAD1BMVEX/'
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'///M//+ZmZkzMzMAAABVsTOVAAAAAnRSTlP/AOW3MEoAAABISURBVHja'
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'tcrRCgAgCENRbf7/N7dKomGvngjhMsPLD4NdMPwia438NRIyxsaL/XQZ'
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'hyxpkC6zyjLXGVXnkhqWJWIIrOgeinECLlUCjBCqNQoAAAAASUVORK5C'
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'YII=',
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'unknown.png': 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWCAMAAAD3n0w0AAAAD1BMVEX/'
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'///M//+ZmZkzMzMAAABVsTOVAAAAAnRSTlP/AOW3MEoAAABYSURBVHja'
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'ncvRDoAgDEPRruX/v1kmNHPBxMTLyzgD6FmsILg56g2hQnJkOco4yZhq'
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'tN5nYd5Zq0LsHblwxwP9GTCWsaGtoelANKzOlz/RfaLYUmLE6E28ALlN'
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'AupSdoFsAAAAAElFTkSuQmCC'}
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# Begin vendored code
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# This code is licensed under the Public Domain/CC0 and comes from
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# https://github.com/leenr/gzip-stream/blob/master/gzip_stream.py
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# Code was modified:
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# removed type annotations to support python2.
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# removed use of *, somearg for positional anonymous args.
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# Default compression level to 9.
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#
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# changed read method argument name from length to size and
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# added read method default value size=-1 for parent class compatibility
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class GZIPCompressedStream(io.RawIOBase):
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def __init__(self, stream, compression_level=9):
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assert 1 <= compression_level <= 9
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self._compression_level = compression_level
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self._stream = stream
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self._compressed_stream = io.BytesIO()
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self._compressor = gzip.GzipFile(
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mode='wb',
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fileobj=self._compressed_stream,
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compresslevel=compression_level
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)
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# because of the GZIP header written by `GzipFile.__init__`:
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self._compressed_stream.seek(0)
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self.count = 0
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def read(self, size=-1):
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r = super().read(size)
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self.count += len(r)
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return r
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def tell(self):
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return self.count
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@property
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def compression_level(self):
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return self._compression_level
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@property
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def stream(self):
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return self._stream
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def readable(self):
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return True
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def _read_compressed_into(self, b):
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buf = self._compressed_stream.read(len(b))
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b[:len(buf)] = buf
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return len(buf)
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def readinto(self, b):
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b = memoryview(b)
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offset = 0
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size = len(b)
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while offset < size:
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offset += self._read_compressed_into(b[offset:])
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if offset < size:
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# self._compressed_buffer now empty
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if self._compressor.closed:
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# nothing to compress anymore
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break
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# compress next bytes
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self._read_n_compress(size)
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return offset
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def _read_n_compress(self, size):
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assert size > 0
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data = self._stream.read(size)
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# rewind buffer to the start to free up memory
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# (because anything currently in the buffer should be already
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# streamed off the object)
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self._compressed_stream.seek(0)
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self._compressed_stream.truncate(0)
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if data:
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self._compressor.write(data)
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else:
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# this will write final data (will flush zlib with Z_FINISH)
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self._compressor.close()
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# rewind to the buffer start
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self._compressed_stream.seek(0)
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def __repr__(self):
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return (
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'{self.__class__.__name__}('
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'{self.stream!r}, '
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'compression_level={self.compression_level!r}'
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')'
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).format(self=self)
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# End vendored code
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def get_mime_icon(mime, filename=''):
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icon = (APACHE_FILE_ICON_MAP.get(filename) or
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APACHE_MIME_ICON_MAP.get(mime) or
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APACHE_MIME_ICON_MAP['_default'])
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return "data:image/png;base64,%s" % ICON_IMAGES[icon]
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def retry_function(func):
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for attempt in range(1, POST_ATTEMPTS + 1):
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try:
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return func()
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except Exception:
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if attempt >= POST_ATTEMPTS:
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raise
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else:
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logging.exception("Error on attempt %d" % attempt)
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time.sleep(attempt * 10)
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def sizeof_fmt(num, suffix='B'):
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# From http://stackoverflow.com/questions/1094841/
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# reusable-library-to-get-human-readable-version-of-file-size
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for unit in ['', 'K', 'M', 'G', 'T', 'P', 'E', 'Z']:
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if abs(num) < 1024.0:
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return "%3.1f%s%s" % (num, unit, suffix)
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num /= 1024.0
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return "%.1f%s%s" % (num, 'Y', suffix)
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class FileDetail():
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"""
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Used to generate indexes with links or as the file path
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to push to storage.
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"""
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def __init__(self, full_path, relative_path, filename=None):
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"""
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Args:
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full_path (str): The absolute path to the file on disk.
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relative_path (str): The relative path from the artifacts source
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used for links.
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filename (str): An optional alternate filename in links.
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"""
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# Make FileNotFoundError exception to be compatible with python2
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try:
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FileNotFoundError # noqa: F823
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except NameError:
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FileNotFoundError = OSError
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self.full_path = full_path
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if filename is None:
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self.filename = os.path.basename(full_path)
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else:
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self.filename = filename
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self.relative_path = relative_path
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if self.full_path and os.path.isfile(self.full_path):
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mime_guess, encoding = mimetypes.guess_type(self.full_path)
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self.mimetype = mime_guess if mime_guess else 'text/plain'
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self.encoding = encoding
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self.folder = False
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else:
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self.mimetype = 'application/directory'
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self.encoding = None
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self.folder = True
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try:
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st = os.stat(self.full_path)
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self.last_modified = time.gmtime(st[stat.ST_MTIME])
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self.size = st[stat.ST_SIZE]
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except (FileNotFoundError, TypeError):
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self.last_modified = time.gmtime(0)
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self.size = 0
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def __repr__(self):
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t = 'Folder' if self.folder else 'File'
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return '<%s %s>' % (t, self.relative_path)
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class FileList(Sequence):
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'''A collection of FileDetail objects
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This is a list-like group of FileDetail objects, intended to be
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used as a context manager around the upload process.
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'''
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def __init__(self):
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self.file_list = []
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self.file_list.append(FileDetail(None, '', ''))
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self.tempdirs = []
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def __enter__(self):
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return self
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def __exit__(self, type, value, traceback):
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for tempdir in self.tempdirs:
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shutil.rmtree(tempdir)
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def __getitem__(self, item):
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return self.file_list.__getitem__(item)
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def __len__(self):
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return self.file_list.__len__()
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def get_tempdir(self):
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'''Get a temporary directory
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Returns path to a private temporary directory which will be
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cleaned on exit
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'''
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tempdir = tempfile.mkdtemp(prefix='s-u-l-tmp')
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self.tempdirs.append(tempdir)
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return tempdir
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@staticmethod
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def _path_in_tree(root, path):
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full_path = os.path.realpath(os.path.abspath(
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os.path.expanduser(path)))
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if not full_path.startswith(root):
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logging.debug("Skipping path outside root: %s" % (path,))
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return False
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return True
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def add(self, file_path):
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"""
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Generate a list of files to upload to storage. Recurses through
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directories
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"""
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# file_list: A list of FileDetails to push to storage
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file_list = []
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if os.path.isfile(file_path):
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relative_path = os.path.basename(file_path)
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file_list.append(FileDetail(file_path, relative_path))
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elif os.path.isdir(file_path):
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original_root = os.path.realpath(os.path.abspath(
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os.path.expanduser(file_path)))
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parent_dir = os.path.dirname(file_path)
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if not file_path.endswith('/'):
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filename = os.path.basename(file_path)
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full_path = file_path
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relative_name = os.path.relpath(full_path, parent_dir)
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file_list.append(FileDetail(full_path, relative_name,
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filename))
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# TODO: this will copy the result of symlinked files, but
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# it won't follow directory symlinks. If we add that, we
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# should ensure that we don't loop.
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for path, folders, files in os.walk(file_path):
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# Sort folder in-place so that we recurse in order.
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files.sort(key=lambda x: x.lower())
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folders.sort(key=lambda x: x.lower())
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# relative_path: The path between the given directory
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# and the one being currently walked.
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relative_path = os.path.relpath(path, parent_dir)
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for filename in folders:
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full_path = os.path.join(path, filename)
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if not self._path_in_tree(original_root, full_path):
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continue
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relative_name = os.path.relpath(full_path, parent_dir)
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file_list.append(FileDetail(full_path, relative_name,
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filename))
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for filename in files:
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full_path = os.path.join(path, filename)
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if not self._path_in_tree(original_root, full_path):
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continue
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relative_name = os.path.relpath(full_path, parent_dir)
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file_detail = FileDetail(full_path, relative_name)
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file_list.append(file_detail)
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self.file_list += file_list
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class Indexer():
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"""Index a FileList
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Functions to generate indexes and other collated data for a
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FileList
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- make_indexes() : make index.html in folders
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"""
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def __init__(self, file_list):
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'''
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Args:
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file_list (FileList): A FileList object with all files
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to be indexed.
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'''
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assert isinstance(file_list, FileList)
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self.file_list = file_list
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def _make_index_file(self, folder_links, title, tempdir, append_footer):
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"""Writes an index into a file for pushing"""
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for file_details in folder_links:
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# Do not generate an index file if one exists already.
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# This may be the case when uploading other machine generated
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# content like python coverage info.
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if self.index_filename == file_details.filename:
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return
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index_content = self._generate_log_index(
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folder_links, title, append_footer)
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fd = open(os.path.join(tempdir, self.index_filename), 'w')
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fd.write(index_content)
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return os.path.join(tempdir, self.index_filename)
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def _generate_log_index(self, folder_links, title, append_footer):
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"""Create an index of logfiles and links to them"""
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output = '<html><head><title>%s</title></head><body>\n' % title
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output += '<h1>%s</h1>\n' % title
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output += '<table><tr><th></th><th>Name</th><th>Last Modified</th>'
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output += '<th>Size</th></tr>'
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file_details_to_append = None
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for file_details in folder_links:
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output += '<tr>'
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output += (
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'<td><img alt="[ ]" title="%(m)s" src="%(i)s"></img></td>' % ({
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'm': file_details.mimetype,
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'i': get_mime_icon(file_details.mimetype,
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file_details.filename),
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}))
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filename = file_details.filename
|
|
link_filename = filename
|
|
if file_details.folder:
|
|
filename += '/'
|
|
link_filename += '/index.html'
|
|
output += '<td><a href="%s">%s</a></td>' % (
|
|
urlparse.quote(link_filename),
|
|
filename)
|
|
output += '<td>%s</td>' % time.asctime(
|
|
file_details.last_modified)
|
|
size = sizeof_fmt(file_details.size, suffix='')
|
|
output += '<td style="text-align: right">%s</td>' % size
|
|
output += '</tr>\n'
|
|
|
|
if (append_footer and
|
|
append_footer in file_details.filename):
|
|
file_details_to_append = file_details
|
|
|
|
output += '</table>'
|
|
|
|
if file_details_to_append:
|
|
output += '<br /><hr />'
|
|
try:
|
|
with open(file_details_to_append.full_path, 'r') as f:
|
|
output += f.read()
|
|
except IOError:
|
|
logging.exception("Error opening file for appending")
|
|
|
|
output += '</body></html>\n'
|
|
return output
|
|
|
|
def make_indexes(self, create_parent_links=True,
|
|
create_topdir_parent_link=False,
|
|
append_footer='index_footer.html'):
|
|
'''Make index.html files
|
|
|
|
Iterate the file list and crete index.html files for folders
|
|
|
|
Args:
|
|
create_parent_links (bool): Create parent links
|
|
create_topdir_parent_link (bool): Create topdir parent link
|
|
append_footer (str): Filename of a footer to append to each
|
|
generated page
|
|
|
|
Return:
|
|
No value, the self.file_list will be updated
|
|
'''
|
|
self.index_filename = 'index.html'
|
|
|
|
folders = collections.OrderedDict()
|
|
for f in self.file_list:
|
|
if f.folder:
|
|
folders[f.relative_path] = []
|
|
folder = os.path.dirname(os.path.dirname(
|
|
f.relative_path + '/'))
|
|
if folder == '/':
|
|
folder = ''
|
|
else:
|
|
folder = os.path.dirname(f.relative_path)
|
|
folders[folder].append(f)
|
|
|
|
indexes = {}
|
|
parent_file_detail = FileDetail(None, '..', '..')
|
|
for folder, files in folders.items():
|
|
# Don't add the pseudo-top-directory
|
|
if files and files[0].full_path is None:
|
|
files = files[1:]
|
|
if create_topdir_parent_link:
|
|
files = [parent_file_detail] + files
|
|
elif create_parent_links:
|
|
files = [parent_file_detail] + files
|
|
|
|
# Do generate a link to the parent directory
|
|
full_path = self._make_index_file(files, 'Index of %s' % (folder,),
|
|
self.file_list.get_tempdir(),
|
|
append_footer)
|
|
|
|
if full_path:
|
|
filename = os.path.basename(full_path)
|
|
relative_name = os.path.join(folder, filename)
|
|
indexes[folder] = FileDetail(full_path, relative_name)
|
|
|
|
# This appends the index file at the end of the group of files
|
|
# for each directory.
|
|
new_list = []
|
|
last_dirname = None
|
|
for f in reversed(list(self.file_list)):
|
|
if f.folder:
|
|
relative_path = f.relative_path + '/'
|
|
else:
|
|
relative_path = f.relative_path
|
|
dirname = os.path.dirname(relative_path)
|
|
if dirname == '/':
|
|
dirname = ''
|
|
if dirname != last_dirname:
|
|
index = indexes.pop(dirname, None)
|
|
if index:
|
|
new_list.append(index)
|
|
last_dirname = dirname
|
|
new_list.append(f)
|
|
new_list.reverse()
|
|
self.file_list.file_list = new_list
|
|
|
|
|
|
class GzipFilter():
|
|
chunk_size = 16384
|
|
|
|
def __init__(self, infile):
|
|
self.gzipfile = GZIPCompressedStream(infile)
|
|
self.done = False
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def __next__(self):
|
|
if self.done:
|
|
self.gzipfile.close()
|
|
raise StopIteration()
|
|
data = self.gzipfile.read(self.chunk_size)
|
|
if not data:
|
|
self.done = True
|
|
return data
|
|
|
|
|
|
class DeflateFilter():
|
|
chunk_size = 16384
|
|
|
|
def __init__(self, infile):
|
|
self.infile = infile
|
|
self.encoder = zlib.compressobj()
|
|
self.done = False
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def __next__(self):
|
|
if self.done:
|
|
raise StopIteration()
|
|
ret = b''
|
|
while True:
|
|
data = self.infile.read(self.chunk_size)
|
|
if data:
|
|
ret = self.encoder.compress(data)
|
|
if ret:
|
|
break
|
|
else:
|
|
self.done = True
|
|
ret = self.encoder.flush()
|
|
break
|
|
return ret
|