lbry-sdk/lbrynet/tests/unit/core/test_BlobManager.py

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import tempfile
import shutil
import os
import random
import string
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from lbrynet.tests.util import random_lbry_hash
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from lbrynet.core.BlobManager import DiskBlobManager
from lbrynet.core.HashAnnouncer import DummyHashAnnouncer
from lbrynet.core.Peer import Peer
from lbrynet import conf
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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()
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self.blob_dir = tempfile.mkdtemp()
self.db_dir = tempfile.mkdtemp()
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hash_announcer = DummyHashAnnouncer()
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self.bm = DiskBlobManager(hash_announcer, self.blob_dir, self.db_dir)
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self.peer = Peer('somehost', 22)
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def tearDown(self):
self.bm.stop()
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# 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)
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shutil.rmtree(self.db_dir)
@defer.inlineCallbacks
def _create_and_add_blob(self):
# create and add blob to blob manager
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data_len = random.randint(1, 1000)
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data = ''.join(random.choice(string.lowercase) for data_len in range(data_len))
hashobj = get_lbry_hash_obj()
hashobj.update(data)
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out = hashobj.hexdigest()
blob_hash = out
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# create new blob
yield self.bm.setup()
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blob = yield self.bm.get_blob(blob_hash, len(data))
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writer, finished_d = yield blob.open_for_writing(self.peer)
yield writer.write(data)
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yield self.bm.blob_completed(blob)
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yield self.bm.add_blob_to_upload_history(blob_hash, 'test', len(data))
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# check to see if blob is there
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self.assertTrue(os.path.isfile(os.path.join(self.blob_dir, blob_hash)))
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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
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for i in range(0, 10):
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blob_hash = yield self._create_and_add_blob()
blob_hashes.append(blob_hash)
blobs = yield self.bm.get_all_verified_blobs()
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self.assertEqual(10, len(blobs))
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@defer.inlineCallbacks
def test_delete_blob(self):
# create blob
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blob_hash = yield self._create_and_add_blob()
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blobs = yield self.bm.get_all_verified_blobs()
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self.assertEqual(len(blobs), 1)
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# delete blob
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yield self.bm.delete_blobs([blob_hash])
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self.assertFalse(os.path.isfile(os.path.join(self.blob_dir, blob_hash)))
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blobs = yield self.bm.get_all_verified_blobs()
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self.assertEqual(len(blobs), 0)
blobs = yield self.bm._get_all_blob_hashes()
self.assertEqual(len(blobs), 0)
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# delete blob that does not exist, nothing will
# happen
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blob_hash = random_lbry_hash()
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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
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blob_hashes = []
for i in range(0, 10):
blob_hash = yield self._create_and_add_blob()
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blob_hashes.append(blob_hash)
blobs = yield self.bm.get_all_verified_blobs()
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self.assertEqual(len(blobs), 10)
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# open the last blob
blob = yield self.bm.get_blob(blob_hashes[-1])
writer, finished_d = yield blob.open_for_writing(self.peer)
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# 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()
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self.assertEqual(len(blobs), 10)
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self.assertTrue(blob_hashes[-1] in blobs)
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self.assertTrue(os.path.isfile(os.path.join(self.blob_dir, blob_hashes[-1])))