64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
import logging
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from gzip import GzipFile
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from tempfile import SpooledTemporaryFile
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from app import build_logs, log_archive, app
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from data.archivedlogs import JSON_MIMETYPE
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from data.database import CloseForLongOperation
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from util.streamingjsonencoder import StreamingJSONEncoder
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from workers.buildlogsarchiver.models_pre_oci import pre_oci_model as model
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from workers.worker import Worker
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POLL_PERIOD_SECONDS = 30
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MEMORY_TEMPFILE_SIZE = 64 * 1024 # Large enough to handle approximately 99% of builds in memory
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logger = logging.getLogger(__name__)
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class ArchiveBuildLogsWorker(Worker):
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def __init__(self):
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super(ArchiveBuildLogsWorker, self).__init__()
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self.add_operation(self._archive_redis_buildlogs, POLL_PERIOD_SECONDS)
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def _archive_redis_buildlogs(self):
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""" Archive a single build, choosing a candidate at random. This process must be idempotent to
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avoid needing two-phase commit. """
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# Get a random build to archive
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to_archive = model.get_archivable_build()
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if to_archive is None:
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logger.debug('No more builds to archive')
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return
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logger.debug('Archiving: %s', to_archive.uuid)
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length, entries = build_logs.get_log_entries(to_archive.uuid, 0)
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to_encode = {
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'start': 0,
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'total': length,
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'logs': entries,
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}
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if length > 0:
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with CloseForLongOperation(app.config):
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with SpooledTemporaryFile(MEMORY_TEMPFILE_SIZE) as tempfile:
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with GzipFile('testarchive', fileobj=tempfile) as zipstream:
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for chunk in StreamingJSONEncoder().iterencode(to_encode):
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zipstream.write(chunk)
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tempfile.seek(0)
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log_archive.store_file(tempfile, JSON_MIMETYPE, content_encoding='gzip',
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file_id=to_archive.uuid)
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we_updated = model.mark_build_archived(to_archive.uuid)
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if we_updated:
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build_logs.expire_status(to_archive.uuid)
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build_logs.delete_log_entries(to_archive.uuid)
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else:
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logger.debug('Another worker pre-empted us when archiving: %s', to_archive.uuid)
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if __name__ == "__main__":
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worker = ArchiveBuildLogsWorker()
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worker.start()
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