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[downloader] Reformat manager
This commit is contained in:
derrod
parent
6f8da36947
commit
0e86791237
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@ -78,6 +78,277 @@ class DLManager(Process):
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self.num_processed_since_last = 0
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self.num_tasks_processed_since_last = 0
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def run_analysis(self, manifest: Manifest, old_manifest: Manifest = None,
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patch=True, resume=True, file_prefix_filter=None,
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file_exclude_filter=None, file_install_tag=None,
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processing_optimization=False) -> AnalysisResult:
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"""
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Run analysis on manifest and old manifest (if not None) and return a result
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with a summary resources required in order to install the provided manifest.
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:param manifest: Manifest to install
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:param old_manifest: Old manifest to patch from (if applicable)
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:param patch: Patch instead of redownloading the entire file
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:param resume: Continue based on resume file if it exists
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:param file_prefix_filter: Only download files that start with this prefix
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:param file_exclude_filter: Exclude files with this prefix from download
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:param file_install_tag: Only install files with the specified tag
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:param processing_optimization: Attempt to optimize processing order and RAM usage
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:return: AnalysisResult
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"""
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analysis_res = AnalysisResult()
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analysis_res.install_size = sum(fm.file_size for fm in manifest.file_manifest_list.elements)
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analysis_res.biggest_chunk = max(c.window_size for c in manifest.chunk_data_list.elements)
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analysis_res.biggest_file_size = max(f.file_size for f in manifest.file_manifest_list.elements)
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is_1mib = analysis_res.biggest_chunk == 1024 * 1024
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self.log.debug(f'Biggest chunk size: {analysis_res.biggest_chunk} bytes (== 1 MiB? {is_1mib})')
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self.log.debug(f'Creating manifest comparison...')
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mc = ManifestComparison.create(manifest, old_manifest)
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analysis_res.manifest_comparison = mc
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if resume and self.resume_file and os.path.exists(self.resume_file):
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try:
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completed_files = set(i.strip() for i in open(self.resume_file).readlines())
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# remove completed files from changed/added and move them to unchanged for the analysis.
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mc.added -= completed_files
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mc.changed -= completed_files
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mc.unchanged |= completed_files
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self.log.debug(f'Skipped {len(completed_files)} files based on resume data!')
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except Exception as e:
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self.log.warning(f'Reading resume file failed: {e!r}, continuing as normal...')
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# Not entirely sure what install tags are used for, only some titles have them.
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# Let's add it for testing anyway.
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if file_install_tag:
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files_to_skip = set(i.filename for i in manifest.file_manifest_list.elements
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if file_install_tag not in i.install_tags)
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self.log.info(f'Found {len(files_to_skip)} files to skip based on install tag.')
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mc.added -= files_to_skip
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mc.changed -= files_to_skip
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mc.unchanged |= files_to_skip
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# if include/exclude prefix has been set: mark all files that are not to be downloaded as unchanged
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if file_exclude_filter:
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file_exclude_filter = file_exclude_filter.lower()
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files_to_skip = set(i for i in mc.added | mc.changed if i.lower().startswith(file_exclude_filter))
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self.log.info(f'Found {len(files_to_skip)} files to skip based on exclude prefix.')
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mc.added -= files_to_skip
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mc.changed -= files_to_skip
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mc.unchanged |= files_to_skip
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if file_prefix_filter:
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file_prefix_filter = file_prefix_filter.lower()
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files_to_skip = set(i for i in mc.added | mc.changed if not i.lower().startswith(file_prefix_filter))
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self.log.info(f'Found {len(files_to_skip)} files to skip based on include prefix.')
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mc.added -= files_to_skip
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mc.changed -= files_to_skip
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mc.unchanged |= files_to_skip
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if file_prefix_filter or file_exclude_filter or file_install_tag:
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self.log.info(f'Remaining files after filtering: {len(mc.added) + len(mc.changed)}')
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# correct install size after filtering
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analysis_res.install_size = sum(fm.file_size for fm in manifest.file_manifest_list.elements
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if fm.filename in mc.added)
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if mc.removed:
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analysis_res.removed = len(mc.removed)
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self.log.debug(f'{analysis_res.removed} removed files')
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if mc.added:
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analysis_res.added = len(mc.added)
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self.log.debug(f'{analysis_res.added} added files')
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if mc.changed:
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analysis_res.changed = len(mc.changed)
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self.log.debug(f'{analysis_res.changed} changed files')
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if mc.unchanged:
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analysis_res.unchanged = len(mc.unchanged)
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self.log.debug(f'{analysis_res.unchanged} unchanged files')
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if processing_optimization and len(manifest.file_manifest_list.elements) > 8_000:
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self.log.warning('Manifest contains too many files, processing optimizations will be disabled.')
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processing_optimization = False
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elif processing_optimization:
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self.log.info('Processing order optimization is enabled, analysis may take a few seconds longer...')
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# count references to chunks for determining runtime cache size later
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references = Counter()
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file_to_chunks = defaultdict(set)
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fmlist = sorted(manifest.file_manifest_list.elements,
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key=lambda a: a.filename.lower())
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for fm in fmlist:
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# chunks of unchanged files are not downloaded so we can skip them
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if fm.filename in mc.unchanged:
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analysis_res.unchanged += fm.file_size
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continue
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for cp in fm.chunk_parts:
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references[cp.guid_num] += 1
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if processing_optimization:
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file_to_chunks[fm.filename].add(cp.guid_num)
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if processing_optimization:
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# reorder the file manifest list to group files that share many chunks
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# 5 is mostly arbitrary but has shown in testing to be a good choice
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min_overlap = 5
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# enumerate the file list to try and find a "partner" for
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# each file that shares the most chunks with it.
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partners = dict()
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filenames = [fm.filename for fm in fmlist]
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for num, filename in enumerate(filenames[:int((len(filenames) + 1) / 2)]):
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chunks = file_to_chunks[filename]
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max_overlap = min_overlap
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for other_file in filenames[num + 1:]:
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overlap = len(chunks & file_to_chunks[other_file])
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if overlap > max_overlap:
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partners[filename] = other_file
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max_overlap = overlap
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# iterate over all the files again and this time around
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_fmlist = []
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processed = set()
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for fm in fmlist:
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if fm.filename in processed:
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continue
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_fmlist.append(fm)
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processed.add(fm.filename)
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# try to find the file's "partner"
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partner = partners.get(fm.filename, None)
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if not partner or partner in processed:
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continue
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partner_fm = manifest.file_manifest_list.get_file_by_path(partner)
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_fmlist.append(partner_fm)
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processed.add(partner)
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fmlist = _fmlist
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# determine reusable chunks and prepare lookup table for reusable ones
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re_usable = defaultdict(dict)
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if old_manifest and mc.changed and patch:
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self.log.debug('Analyzing manifests for re-usable chunks...')
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for changed in mc.changed:
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old_file = old_manifest.file_manifest_list.get_file_by_path(changed)
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new_file = manifest.file_manifest_list.get_file_by_path(changed)
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existing_chunks = dict()
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off = 0
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for cp in old_file.chunk_parts:
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existing_chunks[(cp.guid_num, cp.offset, cp.size)] = off
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off += cp.size
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for cp in new_file.chunk_parts:
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key = (cp.guid_num, cp.offset, cp.size)
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if key in existing_chunks:
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references[cp.guid_num] -= 1
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re_usable[changed][key] = existing_chunks[key]
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analysis_res.reuse_size += cp.size
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last_cache_size = current_cache_size = 0
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# set to determine whether a file is currently cached or not
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cached = set()
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# Using this secondary set is orders of magnitude faster than checking the deque.
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chunks_in_dl_list = set()
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# This is just used to count all unique guids that have been cached
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dl_cache_guids = set()
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# run through the list of files and create the download jobs and also determine minimum
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# runtime cache requirement by simulating adding/removing from cache during download.
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self.log.debug('Creating filetasks and chunktasks...')
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for current_file in fmlist:
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# skip unchanged and empty files
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if current_file.filename in mc.unchanged:
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continue
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elif not current_file.chunk_parts:
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self.tasks.append(FileTask(current_file.filename, empty=True))
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continue
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existing_chunks = re_usable.get(current_file.filename, None)
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chunk_tasks = []
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reused = 0
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for cp in current_file.chunk_parts:
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ct = ChunkTask(cp.guid_num, cp.offset, cp.size)
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# re-use the chunk from the existing file if we can
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if existing_chunks and (cp.guid_num, cp.offset, cp.size) in existing_chunks:
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reused += 1
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ct.chunk_file = current_file.filename
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ct.chunk_offset = existing_chunks[(cp.guid_num, cp.offset, cp.size)]
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else:
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# add to DL list if not already in it
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if cp.guid_num not in chunks_in_dl_list:
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self.chunks_to_dl.append(cp.guid_num)
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chunks_in_dl_list.add(cp.guid_num)
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# if chunk has more than one use or is already in cache,
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# check if we need to add or remove it again.
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if references[cp.guid_num] > 1 or cp.guid_num in cached:
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references[cp.guid_num] -= 1
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# delete from cache if no references left
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if references[cp.guid_num] < 1:
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current_cache_size -= analysis_res.biggest_chunk
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cached.remove(cp.guid_num)
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ct.cleanup = True
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# add to cache if not already cached
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elif cp.guid_num not in cached:
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dl_cache_guids.add(cp.guid_num)
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cached.add(cp.guid_num)
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current_cache_size += analysis_res.biggest_chunk
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else:
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ct.cleanup = True
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chunk_tasks.append(ct)
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if reused:
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self.log.debug(f' + Reusing {reused} chunks from: {current_file.filename}')
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# open temporary file that will contain download + old file contents
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self.tasks.append(FileTask(current_file.filename + u'.tmp', fopen=True))
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self.tasks.extend(chunk_tasks)
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self.tasks.append(FileTask(current_file.filename + u'.tmp', close=True))
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# delete old file and rename temproary
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self.tasks.append(FileTask(current_file.filename, delete=True, rename=True,
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temporary_filename=current_file.filename + u'.tmp'))
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else:
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self.tasks.append(FileTask(current_file.filename, fopen=True))
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self.tasks.extend(chunk_tasks)
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self.tasks.append(FileTask(current_file.filename, close=True))
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# check if runtime cache size has changed
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if current_cache_size > last_cache_size:
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self.log.debug(f' * New maximum cache size: {current_cache_size / 1024 / 1024:.02f} MiB')
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last_cache_size = current_cache_size
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self.log.debug(f'Final cache size requirement: {last_cache_size / 1024 / 1024} MiB.')
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analysis_res.min_memory = last_cache_size + (1024 * 1024 * 32) # add some padding just to be safe
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# Todo implement on-disk caching to avoid this issue.
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if analysis_res.min_memory > self.max_shared_memory:
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shared_mib = f'{self.max_shared_memory / 1024 / 1024:.01f} MiB'
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required_mib = f'{analysis_res.min_memory / 1024 / 1024:.01f} MiB'
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raise MemoryError(f'Current shared memory cache is smaller than required! {shared_mib} < {required_mib}. '
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f'Try running legendary with the --enable-reordering flag to reduce memory usage.')
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# calculate actual dl and patch write size.
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analysis_res.dl_size = \
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sum(c.file_size for c in manifest.chunk_data_list.elements if c.guid_num in chunks_in_dl_list)
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analysis_res.uncompressed_dl_size = \
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sum(c.window_size for c in manifest.chunk_data_list.elements if c.guid_num in chunks_in_dl_list)
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# add jobs to remove files
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for fname in mc.removed:
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self.tasks.append(FileTask(fname, delete=True))
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analysis_res.num_chunks_cache = len(dl_cache_guids)
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self.chunk_data_list = manifest.chunk_data_list
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self.analysis = analysis_res
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return analysis_res
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def download_job_manager(self, task_cond: Condition, shm_cond: Condition):
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while self.chunks_to_dl and self.running:
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while self.active_tasks < self.max_workers * 2 and self.chunks_to_dl:
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@ -243,277 +514,6 @@ class DLManager(Process):
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self.log.warning(f'Exception when trying to read writer result queue: {e!r}')
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self.log.info('Writer result handler quitting...')
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def run_analysis(self, manifest: Manifest, old_manifest: Manifest = None,
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patch=True, resume=True, file_prefix_filter=None,
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file_exclude_filter=None, file_install_tag=None,
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processing_optimization=False) -> AnalysisResult:
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"""
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Run analysis on manifest and old manifest (if not None) and return a result
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with a summary resources required in order to install the provided manifest.
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:param manifest: Manifest to install
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:param old_manifest: Old manifest to patch from (if applicable)
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:param patch: Patch instead of redownloading the entire file
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:param resume: Continue based on resume file if it exists
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:param file_prefix_filter: Only download files that start with this prefix
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:param file_exclude_filter: Exclude files with this prefix from download
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:param file_install_tag: Only install files with the specified tag
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:param processing_optimization: Attempt to optimize processing order and RAM usage
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:return: AnalysisResult
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"""
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analysis_res = AnalysisResult()
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analysis_res.install_size = sum(fm.file_size for fm in manifest.file_manifest_list.elements)
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analysis_res.biggest_chunk = max(c.window_size for c in manifest.chunk_data_list.elements)
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analysis_res.biggest_file_size = max(f.file_size for f in manifest.file_manifest_list.elements)
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is_1mib = analysis_res.biggest_chunk == 1024 * 1024
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self.log.debug(f'Biggest chunk size: {analysis_res.biggest_chunk} bytes (== 1 MiB? {is_1mib})')
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self.log.debug(f'Creating manifest comparison...')
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mc = ManifestComparison.create(manifest, old_manifest)
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analysis_res.manifest_comparison = mc
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if resume and self.resume_file and os.path.exists(self.resume_file):
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try:
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completed_files = set(i.strip() for i in open(self.resume_file).readlines())
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# remove completed files from changed/added and move them to unchanged for the analysis.
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mc.added -= completed_files
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mc.changed -= completed_files
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mc.unchanged |= completed_files
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self.log.debug(f'Skipped {len(completed_files)} files based on resume data!')
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except Exception as e:
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self.log.warning(f'Reading resume file failed: {e!r}, continuing as normal...')
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# Not entirely sure what install tags are used for, only some titles have them.
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# Let's add it for testing anyway.
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if file_install_tag:
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files_to_skip = set(i.filename for i in manifest.file_manifest_list.elements
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if file_install_tag not in i.install_tags)
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self.log.info(f'Found {len(files_to_skip)} files to skip based on install tag.')
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mc.added -= files_to_skip
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mc.changed -= files_to_skip
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mc.unchanged |= files_to_skip
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# if include/exclude prefix has been set: mark all files that are not to be downloaded as unchanged
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if file_exclude_filter:
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file_exclude_filter = file_exclude_filter.lower()
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files_to_skip = set(i for i in mc.added | mc.changed if i.lower().startswith(file_exclude_filter))
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self.log.info(f'Found {len(files_to_skip)} files to skip based on exclude prefix.')
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mc.added -= files_to_skip
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mc.changed -= files_to_skip
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mc.unchanged |= files_to_skip
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if file_prefix_filter:
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file_prefix_filter = file_prefix_filter.lower()
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files_to_skip = set(i for i in mc.added | mc.changed if not i.lower().startswith(file_prefix_filter))
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self.log.info(f'Found {len(files_to_skip)} files to skip based on include prefix.')
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mc.added -= files_to_skip
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mc.changed -= files_to_skip
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mc.unchanged |= files_to_skip
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if file_prefix_filter or file_exclude_filter or file_install_tag:
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self.log.info(f'Remaining files after filtering: {len(mc.added) + len(mc.changed)}')
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# correct install size after filtering
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analysis_res.install_size = sum(fm.file_size for fm in manifest.file_manifest_list.elements
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if fm.filename in mc.added)
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if mc.removed:
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analysis_res.removed = len(mc.removed)
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self.log.debug(f'{analysis_res.removed} removed files')
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if mc.added:
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analysis_res.added = len(mc.added)
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self.log.debug(f'{analysis_res.added} added files')
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if mc.changed:
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analysis_res.changed = len(mc.changed)
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self.log.debug(f'{analysis_res.changed} changed files')
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if mc.unchanged:
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analysis_res.unchanged = len(mc.unchanged)
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self.log.debug(f'{analysis_res.unchanged} unchanged files')
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if processing_optimization and len(manifest.file_manifest_list.elements) > 8_000:
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self.log.warning('Manifest contains too many files, processing optimizations will be disabled.')
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processing_optimization = False
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elif processing_optimization:
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self.log.info('Processing order optimization is enabled, analysis may take a few seconds longer...')
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# count references to chunks for determining runtime cache size later
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references = Counter()
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file_to_chunks = defaultdict(set)
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fmlist = sorted(manifest.file_manifest_list.elements,
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key=lambda a: a.filename.lower())
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for fm in fmlist:
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# chunks of unchanged files are not downloaded so we can skip them
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if fm.filename in mc.unchanged:
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analysis_res.unchanged += fm.file_size
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continue
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for cp in fm.chunk_parts:
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references[cp.guid_num] += 1
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if processing_optimization:
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file_to_chunks[fm.filename].add(cp.guid_num)
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if processing_optimization:
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# reorder the file manifest list to group files that share many chunks
|
||||
# 5 is mostly arbitrary but has shown in testing to be a good choice
|
||||
min_overlap = 5
|
||||
# enumerate the file list to try and find a "partner" for
|
||||
# each file that shares the most chunks with it.
|
||||
partners = dict()
|
||||
filenames = [fm.filename for fm in fmlist]
|
||||
|
||||
for num, filename in enumerate(filenames[:int((len(filenames)+1)/2)]):
|
||||
chunks = file_to_chunks[filename]
|
||||
max_overlap = min_overlap
|
||||
|
||||
for other_file in filenames[num+1:]:
|
||||
overlap = len(chunks & file_to_chunks[other_file])
|
||||
if overlap > max_overlap:
|
||||
partners[filename] = other_file
|
||||
max_overlap = overlap
|
||||
|
||||
# iterate over all the files again and this time around
|
||||
_fmlist = []
|
||||
processed = set()
|
||||
for fm in fmlist:
|
||||
if fm.filename in processed:
|
||||
continue
|
||||
_fmlist.append(fm)
|
||||
processed.add(fm.filename)
|
||||
# try to find the file's "partner"
|
||||
partner = partners.get(fm.filename, None)
|
||||
if not partner or partner in processed:
|
||||
continue
|
||||
|
||||
partner_fm = manifest.file_manifest_list.get_file_by_path(partner)
|
||||
_fmlist.append(partner_fm)
|
||||
processed.add(partner)
|
||||
|
||||
fmlist = _fmlist
|
||||
|
||||
# determine reusable chunks and prepare lookup table for reusable ones
|
||||
re_usable = defaultdict(dict)
|
||||
if old_manifest and mc.changed and patch:
|
||||
self.log.debug('Analyzing manifests for re-usable chunks...')
|
||||
for changed in mc.changed:
|
||||
old_file = old_manifest.file_manifest_list.get_file_by_path(changed)
|
||||
new_file = manifest.file_manifest_list.get_file_by_path(changed)
|
||||
|
||||
existing_chunks = dict()
|
||||
off = 0
|
||||
for cp in old_file.chunk_parts:
|
||||
existing_chunks[(cp.guid_num, cp.offset, cp.size)] = off
|
||||
off += cp.size
|
||||
|
||||
for cp in new_file.chunk_parts:
|
||||
key = (cp.guid_num, cp.offset, cp.size)
|
||||
if key in existing_chunks:
|
||||
references[cp.guid_num] -= 1
|
||||
re_usable[changed][key] = existing_chunks[key]
|
||||
analysis_res.reuse_size += cp.size
|
||||
|
||||
last_cache_size = current_cache_size = 0
|
||||
# set to determine whether a file is currently cached or not
|
||||
cached = set()
|
||||
# Using this secondary set is orders of magnitude faster than checking the deque.
|
||||
chunks_in_dl_list = set()
|
||||
# This is just used to count all unique guids that have been cached
|
||||
dl_cache_guids = set()
|
||||
|
||||
# run through the list of files and create the download jobs and also determine minimum
|
||||
# runtime cache requirement by simulating adding/removing from cache during download.
|
||||
self.log.debug('Creating filetasks and chunktasks...')
|
||||
for current_file in fmlist:
|
||||
# skip unchanged and empty files
|
||||
if current_file.filename in mc.unchanged:
|
||||
continue
|
||||
elif not current_file.chunk_parts:
|
||||
self.tasks.append(FileTask(current_file.filename, empty=True))
|
||||
continue
|
||||
|
||||
existing_chunks = re_usable.get(current_file.filename, None)
|
||||
chunk_tasks = []
|
||||
reused = 0
|
||||
|
||||
for cp in current_file.chunk_parts:
|
||||
ct = ChunkTask(cp.guid_num, cp.offset, cp.size)
|
||||
|
||||
# re-use the chunk from the existing file if we can
|
||||
if existing_chunks and (cp.guid_num, cp.offset, cp.size) in existing_chunks:
|
||||
reused += 1
|
||||
ct.chunk_file = current_file.filename
|
||||
ct.chunk_offset = existing_chunks[(cp.guid_num, cp.offset, cp.size)]
|
||||
else:
|
||||
# add to DL list if not already in it
|
||||
if cp.guid_num not in chunks_in_dl_list:
|
||||
self.chunks_to_dl.append(cp.guid_num)
|
||||
chunks_in_dl_list.add(cp.guid_num)
|
||||
|
||||
# if chunk has more than one use or is already in cache,
|
||||
# check if we need to add or remove it again.
|
||||
if references[cp.guid_num] > 1 or cp.guid_num in cached:
|
||||
references[cp.guid_num] -= 1
|
||||
|
||||
# delete from cache if no references left
|
||||
if references[cp.guid_num] < 1:
|
||||
current_cache_size -= analysis_res.biggest_chunk
|
||||
cached.remove(cp.guid_num)
|
||||
ct.cleanup = True
|
||||
# add to cache if not already cached
|
||||
elif cp.guid_num not in cached:
|
||||
dl_cache_guids.add(cp.guid_num)
|
||||
cached.add(cp.guid_num)
|
||||
current_cache_size += analysis_res.biggest_chunk
|
||||
else:
|
||||
ct.cleanup = True
|
||||
|
||||
chunk_tasks.append(ct)
|
||||
|
||||
if reused:
|
||||
self.log.debug(f' + Reusing {reused} chunks from: {current_file.filename}')
|
||||
# open temporary file that will contain download + old file contents
|
||||
self.tasks.append(FileTask(current_file.filename + u'.tmp', fopen=True))
|
||||
self.tasks.extend(chunk_tasks)
|
||||
self.tasks.append(FileTask(current_file.filename + u'.tmp', close=True))
|
||||
# delete old file and rename temproary
|
||||
self.tasks.append(FileTask(current_file.filename, delete=True, rename=True,
|
||||
temporary_filename=current_file.filename + u'.tmp'))
|
||||
else:
|
||||
self.tasks.append(FileTask(current_file.filename, fopen=True))
|
||||
self.tasks.extend(chunk_tasks)
|
||||
self.tasks.append(FileTask(current_file.filename, close=True))
|
||||
|
||||
# check if runtime cache size has changed
|
||||
if current_cache_size > last_cache_size:
|
||||
self.log.debug(f' * New maximum cache size: {current_cache_size / 1024 / 1024:.02f} MiB')
|
||||
last_cache_size = current_cache_size
|
||||
|
||||
self.log.debug(f'Final cache size requirement: {last_cache_size / 1024 / 1024} MiB.')
|
||||
analysis_res.min_memory = last_cache_size + (1024 * 1024 * 32) # add some padding just to be safe
|
||||
|
||||
# Todo implement on-disk caching to avoid this issue.
|
||||
if analysis_res.min_memory > self.max_shared_memory:
|
||||
shared_mib = f'{self.max_shared_memory / 1024 / 1024:.01f} MiB'
|
||||
required_mib = f'{analysis_res.min_memory / 1024 / 1024:.01f} MiB'
|
||||
raise MemoryError(f'Current shared memory cache is smaller than required! {shared_mib} < {required_mib}. '
|
||||
f'Try running legendary with the --enable-reordering flag to reduce memory usage.')
|
||||
|
||||
# calculate actual dl and patch write size.
|
||||
analysis_res.dl_size = \
|
||||
sum(c.file_size for c in manifest.chunk_data_list.elements if c.guid_num in chunks_in_dl_list)
|
||||
analysis_res.uncompressed_dl_size = \
|
||||
sum(c.window_size for c in manifest.chunk_data_list.elements if c.guid_num in chunks_in_dl_list)
|
||||
|
||||
# add jobs to remove files
|
||||
for fname in mc.removed:
|
||||
self.tasks.append(FileTask(fname, delete=True))
|
||||
|
||||
analysis_res.num_chunks_cache = len(dl_cache_guids)
|
||||
self.chunk_data_list = manifest.chunk_data_list
|
||||
self.analysis = analysis_res
|
||||
|
||||
return analysis_res
|
||||
|
||||
def run(self):
|
||||
if not self.analysis:
|
||||
raise ValueError('Did not run analysis before trying to run download!')
|
||||
|
|
|
|||
Loading…
Reference in a new issue