import tempfile import shutil import os import random import string from lbrynet.tests.util import random_lbry_hash from lbrynet.core.BlobManager import DiskBlobManager from lbrynet.core.HashAnnouncer import DummyHashAnnouncer from lbrynet.core.Peer import Peer from lbrynet import conf from lbrynet.core.cryptoutils import get_lbry_hash_obj from twisted.trial import unittest from twisted.internet import defer class BlobManagerTest(unittest.TestCase): def setUp(self): conf.initialize_settings() self.blob_dir = tempfile.mkdtemp() self.db_dir = tempfile.mkdtemp() hash_announcer = DummyHashAnnouncer() self.bm = DiskBlobManager(hash_announcer, self.blob_dir, self.db_dir) self.peer = Peer('somehost', 22) def tearDown(self): self.bm.stop() # BlobFile will try to delete itself in _close_writer # thus when calling rmtree we may get a FileNotFoundError # for the blob file shutil.rmtree(self.blob_dir, ignore_errors=True) shutil.rmtree(self.db_dir) @defer.inlineCallbacks def _create_and_add_blob(self): # create and add blob to blob manager data_len = random.randint(1, 1000) data = ''.join(random.choice(string.lowercase) for data_len in range(data_len)) hashobj = get_lbry_hash_obj() hashobj.update(data) out = hashobj.hexdigest() blob_hash = out # create new blob yield self.bm.setup() blob = yield self.bm.get_blob(blob_hash, len(data)) writer, finished_d = yield blob.open_for_writing(self.peer) yield writer.write(data) yield self.bm.blob_completed(blob) yield self.bm.add_blob_to_upload_history(blob_hash, 'test', len(data)) # check to see if blob is there self.assertTrue(os.path.isfile(os.path.join(self.blob_dir, blob_hash))) blobs = yield self.bm.get_all_verified_blobs() self.assertTrue(blob_hash in blobs) defer.returnValue(blob_hash) @defer.inlineCallbacks def test_create_blob(self): blob_hashes = [] # create a bunch of blobs for i in range(0, 10): blob_hash = yield self._create_and_add_blob() blob_hashes.append(blob_hash) blobs = yield self.bm.get_all_verified_blobs() self.assertEqual(10, len(blobs)) @defer.inlineCallbacks def test_delete_blob(self): # create blob blob_hash = yield self._create_and_add_blob() blobs = yield self.bm.get_all_verified_blobs() self.assertEqual(len(blobs), 1) # delete blob yield self.bm.delete_blobs([blob_hash]) self.assertFalse(os.path.isfile(os.path.join(self.blob_dir, blob_hash))) blobs = yield self.bm.get_all_verified_blobs() self.assertEqual(len(blobs), 0) blobs = yield self.bm._get_all_blob_hashes() self.assertEqual(len(blobs), 0) # delete blob that does not exist, nothing will # happen blob_hash = random_lbry_hash() out = yield self.bm.delete_blobs([blob_hash]) @defer.inlineCallbacks def test_delete_open_blob(self): # Test that a blob that is opened for writing will not be deleted # create blobs blob_hashes = [] for i in range(0, 10): blob_hash = yield self._create_and_add_blob() blob_hashes.append(blob_hash) blobs = yield self.bm.get_all_verified_blobs() self.assertEqual(len(blobs), 10) # open the last blob blob = yield self.bm.get_blob(blob_hashes[-1]) writer, finished_d = yield blob.open_for_writing(self.peer) # delete the last blob and check if it still exists out = yield self.bm.delete_blobs([blob_hash]) blobs = yield self.bm.get_all_verified_blobs() self.assertEqual(len(blobs), 10) self.assertTrue(blob_hashes[-1] in blobs) self.assertTrue(os.path.isfile(os.path.join(self.blob_dir, blob_hashes[-1])))