def encode_transaction(self, tx):
return {
'txid': tx.id,
'height': tx.height,
'inputs': [self.encode_input(txo) for txo in tx.inputs],
'outputs': [self.encode_output(txo) for txo in tx.outputs],
'total_input': dewies_to_lbc(tx.input_sum),
'total_output': dewies_to_lbc(tx.input_sum - tx.fee),
'total_fee': dewies_to_lbc(tx.fee),
'hex': hexlify(tx.raw).decode(),
}
async def _report_state(self):
try:
for account in self.accounts:
balance = dewies_to_lbc(await account.get_balance())
channel_count = await account.get_channel_count()
claim_count = await account.get_claim_count()
if isinstance(account.receiving, SingleKey):
log.info(
"Loaded single key account %s with %s LBC. "
"%d channels, %d certificates and %d claims",
account.id, balance, channel_count,
len(account.channel_keys), claim_count)
else:
total_receiving = len((await
account.receiving.get_addresses()))
total_change = len((await account.change.get_addresses()))
log.info(
"Loaded account %s with %s LBC, %d receiving addresses (gap: %d), "
"%d change addresses (gap: %d), %d channels, %d certificates and %d claims. ",
account.id, balance, total_receiving,
account.receiving.gap, total_change,
account.change.gap, channel_count,
len(account.channel_keys), claim_count)
except:
log.exception(
'Failed to display wallet state, please file issue '
'for this bug along with the traceback you see below:')
async def assertStreamPurchased(self, stream: Transaction, operation):
await self.account.release_all_outputs()
buyer_balance = await self.account.get_balance()
merchant_balance = lbc_to_dewies(str(await self.blockchain.get_balance()))
pre_purchase_count = (await self.daemon.jsonrpc_purchase_list())['total_items']
purchase = await operation()
stream_txo, purchase_txo = stream.outputs[0], purchase.outputs[0]
stream_fee = stream_txo.claim.stream.fee
self.assertEqual(stream_fee.dewies, purchase_txo.amount)
self.assertEqual(stream_fee.address, purchase_txo.get_address(self.ledger))
await self.ledger.wait(purchase)
await self.generate(1)
merchant_balance += lbc_to_dewies('1.0') # block reward
await self.ledger.wait(purchase)
self.assertEqual(
await self.account.get_balance(), buyer_balance - (purchase.input_sum-purchase.outputs[2].amount))
self.assertEqual(
str(await self.blockchain.get_balance()), dewies_to_lbc(merchant_balance + purchase_txo.amount))
purchases = await self.daemon.jsonrpc_purchase_list()
self.assertEqual(purchases['total_items'], pre_purchase_count+1)
tx = purchases['items'][0].tx_ref.tx
self.assertEqual(len(tx.outputs), 3) # purchase txo, purchase data, change
txo0 = tx.outputs[0]
txo1 = tx.outputs[1]
self.assertEqual(txo0.purchase, txo1) # purchase txo has reference to purchase data
self.assertTrue(txo1.is_purchase_data)
self.assertTrue(txo1.can_decode_purchase_data)
self.assertIsInstance(txo1.purchase_data, Purchase)
self.assertEqual(txo1.purchase_data.claim_id, stream_txo.claim_id)
def _convert_to_old_resolve_output(wallet_manager, resolves):
result = {}
for url, txo in resolves.items():
if isinstance(txo, Output):
tx_height = txo.tx_ref.height
best_height = wallet_manager.ledger.headers.height
result[url] = {
'name': txo.claim_name,
'value': txo.claim,
'protobuf': binascii.hexlify(txo.claim.to_bytes()),
'claim_id': txo.claim_id,
'txid': txo.tx_ref.id,
'nout': txo.position,
'amount': dewies_to_lbc(txo.amount),
'effective_amount': txo.meta.get('effective_amount', 0),
'height': tx_height,
'confirmations': (best_height+1) - tx_height if tx_height > 0 else tx_height,
'claim_sequence': -1,
'address': txo.get_address(wallet_manager.ledger),
'valid_at_height': txo.meta.get('activation_height', None),
'timestamp': wallet_manager.ledger.headers[tx_height]['timestamp'],
'supports': []
}
else:
result[url] = txo
return result
def _format_support(outpoint, supported_id, amount, address):
return {
"txid": outpoint.split(":")[0],
"nout": int(outpoint.split(":")[1]),
"claim_id": supported_id,
"amount": dewies_to_lbc(amount),
"address": address,
}
def encode_claim_meta(self, meta):
for key, value in meta.items():
if key.endswith('_amount'):
if isinstance(value, int):
meta[key] = dewies_to_lbc(value)
if 0 < meta.get('creation_height', 0) <= self.ledger.headers.height:
meta['creation_timestamp'] = self.ledger.headers.estimated_timestamp(meta['creation_height'])
return meta
def encode_output(self, txo, check_signature=True):
tx_height = txo.tx_ref.height
best_height = self.ledger.headers.height
output = {
'txid': txo.tx_ref.id,
'nout': txo.position,
'height': tx_height,
'amount': dewies_to_lbc(txo.amount),
'address': txo.get_address(self.ledger),
'confirmations': (best_height+1) - tx_height if tx_height > 0 else tx_height,
'timestamp': self.ledger.headers[tx_height]['timestamp'] if 0 < tx_height <= best_height else None
}
if txo.is_change is not None:
output['is_change'] = txo.is_change
if txo.is_my_account is not None:
output['is_mine'] = txo.is_my_account
if txo.script.is_claim_name:
output['type'] = 'claim'
output['claim_op'] = 'create'
elif txo.script.is_update_claim:
output['type'] = 'claim'
output['claim_op'] = 'update'
elif txo.script.is_support_claim:
output['type'] = 'support'
else:
output['type'] = 'payment'
if txo.script.is_claim_involved:
output.update({
'name': txo.claim_name,
'normalized_name': txo.normalized_name,
'claim_id': txo.claim_id,
'permanent_url': txo.permanent_url,
'meta': self.encode_claim_meta(txo.meta.copy())
})
if 'short_url' in output['meta']:
output['short_url'] = output['meta'].pop('short_url')
if 'canonical_url' in output['meta']:
output['canonical_url'] = output['meta'].pop('canonical_url')
if txo.script.is_claim_name or txo.script.is_update_claim:
try:
output['value'] = txo.claim
output['value_type'] = txo.claim.claim_type
if self.include_protobuf:
output['protobuf'] = hexlify(txo.claim.to_bytes())
if txo.claim.is_channel:
output['has_signing_key'] = txo.has_private_key
if check_signature and txo.claim.is_signed:
if txo.channel is not None:
output['signing_channel'] = self.encode_output(txo.channel)
output['is_channel_signature_valid'] = txo.is_signed_by(txo.channel, self.ledger)
else:
output['signing_channel'] = {'channel_id': txo.claim.signing_channel_id}
output['is_channel_signature_valid'] = False
except DecodeError:
pass
return output
def save_claim_from_output(self, ledger, *outputs: Output):
return self.save_claims([{
"claim_id": output.claim_id,
"name": output.claim_name,
"amount": dewies_to_lbc(output.amount),
"address": output.get_address(ledger),
"txid": output.tx_ref.id,
"nout": output.position,
"value": output.claim,
"height": output.tx_ref.height,
"claim_sequence": -1,
} for output in outputs])
async def get_granular_balances(self, confirmations=0, reserved_subtotals=False):
tips_balance, supports_balance, claims_balance = 0, 0, 0
get_total_balance = partial(self.get_balance, confirmations=confirmations, include_claims=True)
total = await get_total_balance()
if reserved_subtotals:
claims_balance = await get_total_balance(txo_type__in=[TXO_TYPES['stream'], TXO_TYPES['channel']])
for amount, spent, from_me, to_me, height in await self.get_support_summary():
if confirmations > 0 and not 0 < height <= self.ledger.headers.height - (confirmations - 1):
continue
if not spent and to_me:
if from_me:
supports_balance += amount
else:
tips_balance += amount
reserved = claims_balance + supports_balance + tips_balance
else:
reserved = await self.get_balance(
confirmations=confirmations, include_claims=True, txo_type__gt=0
)
return {
'total': dewies_to_lbc(total),
'available': dewies_to_lbc(total - reserved),
'reserved': dewies_to_lbc(reserved),
'reserved_subtotals': {
'claims': dewies_to_lbc(claims_balance),
'supports': dewies_to_lbc(supports_balance),
'tips': dewies_to_lbc(tips_balance)
} if reserved_subtotals else None
}
def as_dict(self) -> typing.Dict:
return {
"name": self.claim_name,
"claim_id": self.claim_id,
"address": self.claim_address,
"claim_sequence": self.claim_sequence,
"value": self.claim,
"height": self.height,
"amount": dewies_to_lbc(self.amount),
"nout": self.nout,
"txid": self.txid,
"channel_claim_id": self.channel_claim_id,
"channel_name": self.channel_name
}
async def get_transaction_history(self, **constraints):
txs = await self.db.get_transactions(**constraints)
headers = self.headers
history = []
for tx in txs:
ts = headers[tx.height]['timestamp'] if tx.height > 0 else None
item = {
'txid':
tx.id,
'timestamp':
ts,
'date':
datetime.fromtimestamp(ts).isoformat(' ')[:-3]
if tx.height > 0 else None,
'confirmations':
(headers.height + 1) - tx.height if tx.height > 0 else 0,
'claim_info': [],
'update_info': [],
'support_info': [],
'abandon_info': []
}
is_my_inputs = all([txi.is_my_account for txi in tx.inputs])
if is_my_inputs:
# fees only matter if we are the ones paying them
item['value'] = dewies_to_lbc(tx.net_account_balance + tx.fee)
item['fee'] = dewies_to_lbc(-tx.fee)
else:
# someone else paid the fees
item['value'] = dewies_to_lbc(tx.net_account_balance)
item['fee'] = '0.0'
for txo in tx.my_claim_outputs:
item['claim_info'].append({
'address':
txo.get_address(self),
'balance_delta':
dewies_to_lbc(-txo.amount),
'amount':
dewies_to_lbc(txo.amount),
'claim_id':
txo.claim_id,
'claim_name':
txo.claim_name,
'nout':
txo.position
})
for txo in tx.my_update_outputs:
if is_my_inputs: # updating my own claim
previous = None
for txi in tx.inputs:
if txi.txo_ref.txo is not None:
other_txo = txi.txo_ref.txo
if (other_txo.is_claim or other_txo.script.is_support_claim) \
and other_txo.claim_id == txo.claim_id:
previous = other_txo
break
if previous is not None:
item['update_info'].append({
'address':
txo.get_address(self),
'balance_delta':
dewies_to_lbc(previous.amount - txo.amount),
'amount':
dewies_to_lbc(txo.amount),
'claim_id':
txo.claim_id,
'claim_name':
txo.claim_name,
'nout':
txo.position
})
else: # someone sent us their claim
item['update_info'].append({
'address':
txo.get_address(self),
'balance_delta':
dewies_to_lbc(0),
'amount':
dewies_to_lbc(txo.amount),
'claim_id':
txo.claim_id,
'claim_name':
txo.claim_name,
'nout':
txo.position
})
for txo in tx.my_support_outputs:
item['support_info'].append({
'address':
txo.get_address(self),
'balance_delta':
dewies_to_lbc(
txo.amount if not is_my_inputs else -txo.amount),
'amount':
dewies_to_lbc(txo.amount),
'claim_id':
txo.claim_id,
'claim_name':
txo.claim_name,
'is_tip':
not is_my_inputs,
'nout':
txo.position
})
if is_my_inputs:
for txo in tx.other_support_outputs:
item['support_info'].append({
'address':
txo.get_address(self),
'balance_delta':
dewies_to_lbc(-txo.amount),
'amount':
dewies_to_lbc(txo.amount),
'claim_id':
txo.claim_id,
'claim_name':
txo.claim_name,
'is_tip':
is_my_inputs,
'nout':
txo.position
})
for txo in tx.my_abandon_outputs:
item['abandon_info'].append({
'address':
txo.get_address(self),
'balance_delta':
dewies_to_lbc(txo.amount),
'amount':
dewies_to_lbc(txo.amount),
'claim_id':
txo.claim_id,
'claim_name':
txo.claim_name,
'nout':
txo.position
})
history.append(item)
return history
def calculate_effective_amount(amount: str, supports: typing.Optional[typing.List[typing.Dict]] = None) -> str:
return dewies_to_lbc(
lbc_to_dewies(amount) + sum([lbc_to_dewies(support['amount']) for support in supports])
)
async def parse_and_validate_claim_result(self,
claim_result,
certificate=None):
if not claim_result or 'value' not in claim_result:
return claim_result
claim_result = _decode_claim_result(claim_result)
if claim_result.get('height'):
claim_result['timestamp'] = self.ledger.headers[
claim_result['height']]['timestamp']
if claim_result.get('depth'):
claim_result['confirmations'] = claim_result.pop('depth')
if claim_result['value']:
claim_result['has_signature'] = False
if claim_result['value'].is_signed:
claim_result['has_signature'] = True
claim_tx = await self._fetch_tx(claim_result['txid'])
if certificate is None:
log.info("fetching certificate to check claim signature")
channel_id = claim_result['value'].signing_channel_id
certificate = (await self.network.get_claims_by_ids(
[channel_id])).get(channel_id)
if not certificate:
log.warning('Certificate %s not found', channel_id)
claim_result['channel_name'] = certificate[
'name'] if certificate else None
cert_tx = await self._fetch_tx(certificate['txid']
) if certificate else None
claim_result[
'signature_is_valid'] = validate_claim_signature_and_get_channel_name(
claim_result,
certificate,
self.ledger,
claim_tx=claim_tx,
cert_tx=cert_tx)
# fixme: workaround while json encoder isnt used here
if cert_tx:
channel_txo = cert_tx.outputs[certificate['nout']]
claim_result['signing_channel'] = {
'name': channel_txo.claim_name,
'claim_id': channel_txo.claim_id,
'value': channel_txo.claim
}
claim_result['is_channel_signature_valid'] = claim_result[
'signature_is_valid']
if 'amount' in claim_result:
claim_result['amount'] = dewies_to_lbc(claim_result['amount'])
claim_result['effective_amount'] = dewies_to_lbc(
claim_result['effective_amount'])
claim_result['supports'] = [{
'txid': txid,
'nout': nout,
'amount': dewies_to_lbc(amount)
} for (txid, nout, amount) in claim_result['supports']]
claim_result['height'] = claim_result.get('height', -1) or -1
claim_result[
'permanent_url'] = f"lbry://{claim_result['name']}#{claim_result['claim_id']}"
return claim_result
async def download_from_uri(self, uri, exchange_rate_manager: 'ExchangeRateManager',
timeout: Optional[float] = None, file_name: Optional[str] = None,
download_directory: Optional[str] = None,
save_file: Optional[bool] = None, resolve_timeout: float = 3.0,
wallet: Optional['Wallet'] = None) -> ManagedDownloadSource:
wallet = wallet or self.wallet_manager.default_wallet
timeout = timeout or self.config.download_timeout
start_time = self.loop.time()
resolved_time = None
stream = None
claim = None
error = None
outpoint = None
if save_file is None:
save_file = self.config.save_files
if file_name and not save_file:
save_file = True
if save_file:
download_directory = download_directory or self.config.download_dir
else:
download_directory = None
payment = None
try:
# resolve the claim
if not URL.parse(uri).has_stream:
raise ResolveError("cannot download a channel claim, specify a /path")
try:
resolved_result = await asyncio.wait_for(
self.wallet_manager.ledger.resolve(
wallet.accounts, [uri],
include_purchase_receipt=True,
include_is_my_output=True
), resolve_timeout
)
except asyncio.TimeoutError:
raise ResolveTimeoutError(uri)
except Exception as err:
if isinstance(err, asyncio.CancelledError):
raise
log.exception("Unexpected error resolving stream:")
raise ResolveError(f"Unexpected error resolving stream: {str(err)}")
if 'error' in resolved_result:
raise ResolveError(f"Unexpected error resolving uri for download: {resolved_result['error']}")
if not resolved_result or uri not in resolved_result:
raise ResolveError(f"Failed to resolve stream at '{uri}'")
txo = resolved_result[uri]
if isinstance(txo, dict):
raise ResolveError(f"Failed to resolve stream at '{uri}': {txo}")
claim = txo.claim
outpoint = f"{txo.tx_ref.id}:{txo.position}"
resolved_time = self.loop.time() - start_time
await self.storage.save_claim_from_output(self.wallet_manager.ledger, txo)
####################
# update or replace
####################
if claim.stream.source.bt_infohash:
source_manager = self.source_managers['torrent']
existing = source_manager.get_filtered(bt_infohash=claim.stream.source.bt_infohash)
else:
source_manager = self.source_managers['stream']
existing = source_manager.get_filtered(sd_hash=claim.stream.source.sd_hash)
# resume or update an existing stream, if the stream changed: download it and delete the old one after
to_replace, updated_stream = None, None
if existing and existing[0].claim_id != txo.claim_id:
raise ResolveError(f"stream for {existing[0].claim_id} collides with existing download {txo.claim_id}")
if existing:
log.info("claim contains a metadata only update to a stream we have")
if claim.stream.source.bt_infohash:
await self.storage.save_torrent_content_claim(
existing[0].identifier, outpoint, existing[0].torrent_length, existing[0].torrent_name
)
claim_info = await self.storage.get_content_claim_for_torrent(existing[0].identifier)
existing[0].set_claim(claim_info, claim)
else:
await self.storage.save_content_claim(
existing[0].stream_hash, outpoint
)
await source_manager._update_content_claim(existing[0])
updated_stream = existing[0]
else:
existing_for_claim_id = self.get_filtered(claim_id=txo.claim_id)
if existing_for_claim_id:
log.info("claim contains an update to a stream we have, downloading it")
if save_file and existing_for_claim_id[0].output_file_exists:
save_file = False
if not claim.stream.source.bt_infohash:
existing_for_claim_id[0].downloader.node = source_manager.node
await existing_for_claim_id[0].start(timeout=timeout, save_now=save_file)
if not existing_for_claim_id[0].output_file_exists and (
save_file or file_name or download_directory):
await existing_for_claim_id[0].save_file(
file_name=file_name, download_directory=download_directory
)
to_replace = existing_for_claim_id[0]
# resume or update an existing stream, if the stream changed: download it and delete the old one after
if updated_stream:
log.info("already have stream for %s", uri)
if save_file and updated_stream.output_file_exists:
save_file = False
if not claim.stream.source.bt_infohash:
updated_stream.downloader.node = source_manager.node
await updated_stream.start(timeout=timeout, save_now=save_file)
if not updated_stream.output_file_exists and (save_file or file_name or download_directory):
await updated_stream.save_file(
file_name=file_name, download_directory=download_directory
)
return updated_stream
####################
# pay fee
####################
needs_purchasing = (
not to_replace and
not txo.is_my_output and
txo.has_price and
not txo.purchase_receipt
)
if needs_purchasing:
payment = await self.wallet_manager.create_purchase_transaction(
wallet.accounts, txo, exchange_rate_manager
)
####################
# make downloader and wait for start
####################
if not claim.stream.source.bt_infohash:
# fixme: this shouldnt be here
stream = ManagedStream(
self.loop, self.config, source_manager.blob_manager, claim.stream.source.sd_hash,
download_directory, file_name, ManagedStream.STATUS_RUNNING, content_fee=payment,
analytics_manager=self.analytics_manager
)
stream.downloader.node = source_manager.node
else:
stream = TorrentSource(
self.loop, self.config, self.storage, identifier=claim.stream.source.bt_infohash,
file_name=file_name, download_directory=download_directory or self.config.download_dir,
status=ManagedStream.STATUS_RUNNING,
analytics_manager=self.analytics_manager,
torrent_session=source_manager.torrent_session
)
log.info("starting download for %s", uri)
before_download = self.loop.time()
await stream.start(timeout, save_file)
####################
# success case: delete to_replace if applicable, broadcast fee payment
####################
if to_replace: # delete old stream now that the replacement has started downloading
await source_manager.delete(to_replace)
if payment is not None:
await self.wallet_manager.broadcast_or_release(payment)
payment = None # to avoid releasing in `finally` later
log.info("paid fee of %s for %s", dewies_to_lbc(stream.content_fee.outputs[0].amount), uri)
await self.storage.save_content_fee(stream.stream_hash, stream.content_fee)
source_manager.add(stream)
if not claim.stream.source.bt_infohash:
await self.storage.save_content_claim(stream.stream_hash, outpoint)
else:
await self.storage.save_torrent_content_claim(
stream.identifier, outpoint, stream.torrent_length, stream.torrent_name
)
claim_info = await self.storage.get_content_claim_for_torrent(stream.identifier)
stream.set_claim(claim_info, claim)
if save_file:
await asyncio.wait_for(stream.save_file(), timeout - (self.loop.time() - before_download),
loop=self.loop)
return stream
except asyncio.TimeoutError:
error = DownloadDataTimeoutError(stream.sd_hash)
raise error
except Exception as err: # forgive data timeout, don't delete stream
expected = (DownloadSDTimeoutError, DownloadDataTimeoutError, InsufficientFundsError,
KeyFeeAboveMaxAllowedError)
if isinstance(err, expected):
log.warning("Failed to download %s: %s", uri, str(err))
elif isinstance(err, asyncio.CancelledError):
pass
else:
log.exception("Unexpected error downloading stream:")
error = err
raise
finally:
if payment is not None:
# payment is set to None after broadcasting, if we're here an exception probably happened
await self.wallet_manager.ledger.release_tx(payment)
if self.analytics_manager and claim and claim.stream.source.bt_infohash:
# TODO: analytics for torrents
pass
elif self.analytics_manager and (error or (stream and (stream.downloader.time_to_descriptor or
stream.downloader.time_to_first_bytes))):
server = self.wallet_manager.ledger.network.client.server
self.loop.create_task(
self.analytics_manager.send_time_to_first_bytes(
resolved_time, self.loop.time() - start_time, None if not stream else stream.download_id,
uri, outpoint,
None if not stream else len(stream.downloader.blob_downloader.active_connections),
None if not stream else len(stream.downloader.blob_downloader.scores),
None if not stream else len(stream.downloader.blob_downloader.connection_failures),
False if not stream else stream.downloader.added_fixed_peers,
self.config.fixed_peer_delay if not stream else stream.downloader.fixed_peers_delay,
None if not stream else stream.sd_hash,
None if not stream else stream.downloader.time_to_descriptor,
None if not (stream and stream.descriptor) else stream.descriptor.blobs[0].blob_hash,
None if not (stream and stream.descriptor) else stream.descriptor.blobs[0].length,
None if not stream else stream.downloader.time_to_first_bytes,
None if not error else error.__class__.__name__,
None if not error else str(error),
None if not server else f"{server[0]}:{server[1]}"
)
)
def encode_output(self, txo, check_signature=True):
if not txo:
return
tx_height = txo.tx_ref.height
best_height = self.ledger.headers.height
output = {
'txid': txo.tx_ref.id,
'nout': txo.position,
'height': tx_height,
'amount': dewies_to_lbc(txo.amount),
'address':
txo.get_address(self.ledger) if txo.has_address else None,
'confirmations':
(best_height + 1) - tx_height if tx_height > 0 else tx_height,
'timestamp': self.ledger.headers.estimated_timestamp(tx_height)
}
if txo.is_spent is not None:
output['is_spent'] = txo.is_spent
if txo.is_my_output is not None:
output['is_my_output'] = txo.is_my_output
if txo.is_my_input is not None:
output['is_my_input'] = txo.is_my_input
if txo.sent_supports is not None:
output['sent_supports'] = dewies_to_lbc(txo.sent_supports)
if txo.sent_tips is not None:
output['sent_tips'] = dewies_to_lbc(txo.sent_tips)
if txo.received_tips is not None:
output['received_tips'] = dewies_to_lbc(txo.received_tips)
if txo.is_internal_transfer is not None:
output['is_internal_transfer'] = txo.is_internal_transfer
if txo.script.is_claim_name:
output['type'] = 'claim'
output['claim_op'] = 'create'
elif txo.script.is_update_claim:
output['type'] = 'claim'
output['claim_op'] = 'update'
elif txo.script.is_support_claim:
output['type'] = 'support'
elif txo.script.is_return_data:
output['type'] = 'data'
elif txo.purchase is not None:
output['type'] = 'purchase'
output['claim_id'] = txo.purchased_claim_id
if txo.purchased_claim is not None:
output['claim'] = self.encode_output(txo.purchased_claim)
else:
output['type'] = 'payment'
if txo.script.is_claim_involved:
output.update({
'name': txo.claim_name,
'normalized_name': txo.normalized_name,
'claim_id': txo.claim_id,
'permanent_url': txo.permanent_url,
'meta': self.encode_claim_meta(txo.meta.copy())
})
if 'short_url' in output['meta']:
output['short_url'] = output['meta'].pop('short_url')
if 'canonical_url' in output['meta']:
output['canonical_url'] = output['meta'].pop('canonical_url')
if txo.claims is not None:
output['claims'] = [self.encode_output(o) for o in txo.claims]
if txo.reposted_claim is not None:
output['reposted_claim'] = self.encode_output(
txo.reposted_claim)
if txo.script.is_claim_name or txo.script.is_update_claim or txo.script.is_support_claim_data:
try:
output['value'] = txo.signable
if self.include_protobuf:
output['protobuf'] = hexlify(txo.signable.to_bytes())
if txo.purchase_receipt is not None:
output['purchase_receipt'] = self.encode_output(
txo.purchase_receipt)
if txo.script.is_claim_name or txo.script.is_update_claim:
output['value_type'] = txo.claim.claim_type
if txo.claim.is_channel:
output['has_signing_key'] = txo.has_private_key
if check_signature and txo.signable.is_signed:
if txo.channel is not None:
output['signing_channel'] = self.encode_output(
txo.channel)
output[
'is_channel_signature_valid'] = txo.is_signed_by(
txo.channel, self.ledger)
else:
output['signing_channel'] = {
'channel_id': txo.signable.signing_channel_id
}
output['is_channel_signature_valid'] = False
except DecodeError:
pass
return output
async def download_stream_from_uri(self, uri, exchange_rate_manager: 'ExchangeRateManager',
timeout: Optional[float] = None,
file_name: Optional[str] = None,
download_directory: Optional[str] = None,
save_file: Optional[bool] = None,
resolve_timeout: float = 3.0,
wallet: Optional['Wallet'] = None) -> ManagedStream:
manager = self.wallet_manager
wallet = wallet or manager.default_wallet
timeout = timeout or self.config.download_timeout
start_time = self.loop.time()
resolved_time = None
stream = None
txo: Optional[Output] = None
error = None
outpoint = None
if save_file is None:
save_file = self.config.save_files
if file_name and not save_file:
save_file = True
if save_file:
download_directory = download_directory or self.config.download_dir
else:
download_directory = None
payment = None
try:
# resolve the claim
if not URL.parse(uri).has_stream:
raise ResolveError("cannot download a channel claim, specify a /path")
try:
response = await asyncio.wait_for(
manager.ledger.resolve(wallet.accounts, [uri]),
resolve_timeout
)
resolved_result = self._convert_to_old_resolve_output(manager, response)
except asyncio.TimeoutError:
raise ResolveTimeoutError(uri)
except Exception as err:
if isinstance(err, asyncio.CancelledError): # TODO: remove when updated to 3.8
raise
log.exception("Unexpected error resolving stream:")
raise ResolveError(f"Unexpected error resolving stream: {str(err)}")
await self.storage.save_claims_for_resolve([
value for value in resolved_result.values() if 'error' not in value
])
resolved = resolved_result.get(uri, {})
resolved = resolved if 'value' in resolved else resolved.get('claim')
if not resolved:
raise ResolveError(f"Failed to resolve stream at '{uri}'")
if 'error' in resolved:
raise ResolveError(f"error resolving stream: {resolved['error']}")
txo = response[uri]
claim = Claim.from_bytes(binascii.unhexlify(resolved['protobuf']))
outpoint = f"{resolved['txid']}:{resolved['nout']}"
resolved_time = self.loop.time() - start_time
# resume or update an existing stream, if the stream changed: download it and delete the old one after
updated_stream, to_replace = await self._check_update_or_replace(outpoint, resolved['claim_id'], claim)
if updated_stream:
log.info("already have stream for %s", uri)
if save_file and updated_stream.output_file_exists:
save_file = False
await updated_stream.start(node=self.node, timeout=timeout, save_now=save_file)
if not updated_stream.output_file_exists and (save_file or file_name or download_directory):
await updated_stream.save_file(
file_name=file_name, download_directory=download_directory, node=self.node
)
return updated_stream
if not to_replace and txo.has_price and not txo.purchase_receipt:
payment = await manager.create_purchase_transaction(
wallet.accounts, txo, exchange_rate_manager
)
stream = ManagedStream(
self.loop, self.config, self.blob_manager, claim.stream.source.sd_hash, download_directory,
file_name, ManagedStream.STATUS_RUNNING, content_fee=payment,
analytics_manager=self.analytics_manager
)
log.info("starting download for %s", uri)
before_download = self.loop.time()
await stream.start(self.node, timeout)
stream.set_claim(resolved, claim)
if to_replace: # delete old stream now that the replacement has started downloading
await self.delete_stream(to_replace)
if payment is not None:
await manager.broadcast_or_release(payment)
payment = None # to avoid releasing in `finally` later
log.info("paid fee of %s for %s", dewies_to_lbc(stream.content_fee.outputs[0].amount), uri)
await self.storage.save_content_fee(stream.stream_hash, stream.content_fee)
self.streams[stream.sd_hash] = stream
self.storage.content_claim_callbacks[stream.stream_hash] = lambda: self._update_content_claim(stream)
await self.storage.save_content_claim(stream.stream_hash, outpoint)
if save_file:
await asyncio.wait_for(stream.save_file(node=self.node), timeout - (self.loop.time() - before_download),
loop=self.loop)
return stream
except asyncio.TimeoutError:
error = DownloadDataTimeoutError(stream.sd_hash)
raise error
except Exception as err: # forgive data timeout, don't delete stream
expected = (DownloadSDTimeoutError, DownloadDataTimeoutError, InsufficientFundsError,
KeyFeeAboveMaxAllowedError)
if isinstance(err, expected):
log.warning("Failed to download %s: %s", uri, str(err))
elif isinstance(err, asyncio.CancelledError):
pass
else:
log.exception("Unexpected error downloading stream:")
error = err
raise
finally:
if payment is not None:
# payment is set to None after broadcasting, if we're here an exception probably happened
await manager.ledger.release_tx(payment)
if self.analytics_manager and (error or (stream and (stream.downloader.time_to_descriptor or
stream.downloader.time_to_first_bytes))):
server = self.wallet_manager.ledger.network.client.server
self.loop.create_task(
self.analytics_manager.send_time_to_first_bytes(
resolved_time, self.loop.time() - start_time, None if not stream else stream.download_id,
uri, outpoint,
None if not stream else len(stream.downloader.blob_downloader.active_connections),
None if not stream else len(stream.downloader.blob_downloader.scores),
None if not stream else len(stream.downloader.blob_downloader.connection_failures),
False if not stream else stream.downloader.added_fixed_peers,
self.config.fixed_peer_delay if not stream else stream.downloader.fixed_peers_delay,
None if not stream else stream.sd_hash,
None if not stream else stream.downloader.time_to_descriptor,
None if not (stream and stream.descriptor) else stream.descriptor.blobs[0].blob_hash,
None if not (stream and stream.descriptor) else stream.descriptor.blobs[0].length,
None if not stream else stream.downloader.time_to_first_bytes,
None if not error else error.__class__.__name__,
None if not error else str(error),
None if not server else f"{server[0]}:{server[1]}"
)
)
async def assertOutputAmount(self, amounts, awaitable):
self.assertEqual(
amounts, [dewies_to_lbc(txo.amount) for txo in await awaitable])