def test_publish(self, args=sys.argv[1:]):
gossip = GossipMock()
LOGGER.info(self.blocks)
publisher = BlockPublisher(
consensus=TestModePublisher(),
transaction_executor=TransactionExecutorMock(),
send_message=gossip.send_message,
squash_handler=None)
LOGGER.info("1")
# initial load of existing state
publisher.on_chain_updated(self.blocks.chain_head.block, [], [])
LOGGER.info("2")
# repeat as necessary
batch = Batch()
publisher.on_batch_received(batch)
LOGGER.info("3")
# current dev_mode consensus always claims blocks when asked.
# this will be called on a polling every so often or possibly triggered
# by events in the consensus it's self ... TBD
publisher.on_check_publish_block()
LOGGER.info("4")
LOGGER.info(self.blocks)
# repeat as necessary
batch = Batch()
publisher.on_batch_received(batch)
publisher.on_check_publish_block()
LOGGER.info(self.blocks)
class BlockTreeManager(object):
def __str__(self):
return str(self.block_cache)
def __repr__(self):
return repr(self.block_cache)
def __init__(self, with_genesis=True):
self.block_sender = MockBlockSender()
self.batch_sender = MockBatchSender()
self.block_store = BlockStore(DictDatabase())
self.block_cache = BlockCache(self.block_store)
self.state_db = {}
# add the mock reference to the consensus
consensus_setting_addr = ConfigView.setting_address(
'sawtooth.consensus.algorithm')
self.state_db[consensus_setting_addr] = _setting_entry(
'sawtooth.consensus.algorithm', 'test_journal.mock_consensus')
self.state_view_factory = MockStateViewFactory(self.state_db)
self.signing_key = signing.generate_privkey()
self.public_key = signing.generate_pubkey(self.signing_key)
self.identity_signing_key = signing.generate_privkey()
chain_head = None
if with_genesis:
self.genesis_block = self.generate_genesis_block()
self.set_chain_head(self.genesis_block)
chain_head = self.genesis_block
self.block_publisher = BlockPublisher(
transaction_executor=MockTransactionExecutor(),
block_cache=self.block_cache,
state_view_factory=self.state_view_factory,
block_sender=self.block_sender,
batch_sender=self.block_sender,
squash_handler=None,
chain_head=chain_head,
identity_signing_key=self.identity_signing_key,
data_dir=None,
config_dir=None)
@property
def chain_head(self):
return self.block_store.chain_head
def set_chain_head(self, block):
self.block_store.update_chain([block], [])
def generate_block(self,
previous_block=None,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=0):
previous = self._get_block(previous_block)
if previous is None:
previous = self.chain_head
self.block_publisher.on_chain_updated(previous)
while self.block_sender.new_block is None:
self.block_publisher.on_batch_received(
self._generate_batch_from_payload(''))
self.block_publisher.on_check_publish_block(True)
block_from_sender = self.block_sender.new_block
self.block_sender.new_block = None
block_wrapper = BlockWrapper(block_from_sender)
if invalid_signature:
block_wrapper.block.header_signature = "BAD"
if invalid_consensus:
block_wrapper.header.consensus = b'BAD'
if invalid_batch:
block_wrapper.block.batches.extend(
[self._generate_batch_from_payload('BAD')])
block_wrapper.weight = weight
block_wrapper.status = status
if add_to_cache:
self.block_cache[block_wrapper.identifier] = block_wrapper
if add_to_store:
self.block_store[block_wrapper.identifier] = block_wrapper
return block_wrapper
def generate_chain(self, root_block, blocks, params=None):
"""
Generate a new chain based on the root block and place it in the
block cache.
"""
if params is None:
params = {}
if root_block is None:
previous = self.generate_genesis_block()
self.block_store[previous.identifier] = previous
else:
previous = self._get_block(root_block)
try:
block_defs = [self._block_def(**params) for _ in range(blocks)]
except TypeError:
block_defs = blocks
out = []
for block_def in block_defs:
new_block = self.generate_block(previous_block=previous,
**block_def)
out.append(new_block)
previous = new_block
return out
def _generate_block(self, payload, previous_block_id, block_num):
header = BlockHeader(previous_block_id=previous_block_id,
signer_pubkey=self.public_key,
block_num=block_num)
block_builder = BlockBuilder(header)
block_builder.add_batches([self._generate_batch_from_payload(payload)])
header_bytes = block_builder.block_header.SerializeToString()
signature = signing.sign(header_bytes, self.identity_signing_key)
block_builder.set_signature(signature)
return BlockWrapper(block_builder.build_block())
def generate_genesis_block(self):
return self._generate_block(payload='Genesis',
previous_block_id=NULL_BLOCK_IDENTIFIER,
block_num=0)
def _block_def(self,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=0):
return {
"add_to_cache": add_to_cache,
"add_to_store": add_to_store,
"batch_count": batch_count,
"status": status,
"invalid_consensus": invalid_consensus,
"invalid_batch": invalid_batch,
"invalid_signature": invalid_signature,
"weight": weight
}
def _get_block_id(self, block):
if block is None:
return None
elif isinstance(block, Block) or\
isinstance(block, BlockWrapper):
return block.header_signature
elif isinstance(block, basestring):
return block
else:
return str(block)
def _get_block(self, block):
if block is None:
return None
elif isinstance(block, Block):
return BlockWrapper(block)
elif isinstance(block, BlockWrapper):
return block
elif isinstance(block, str):
return self.block_cache[block]
else: # WTF try something crazy
return self.block_cache[str(block)]
def generate_batch(self, txn_count=2, missing_deps=False, txns=None):
if txns is None:
txns = [
self.generate_transaction('txn_' + str(i))
for i in range(txn_count)
]
if missing_deps:
target_txn = txns[-1]
txn_missing_deps = self.generate_transaction(
payload='this one has a missing dependency',
deps=[target_txn.header_signature])
# replace the targeted txn with the missing deps txn
txns[-1] = txn_missing_deps
batch_header = BatchHeader(signer_pubkey=self.public_key,
transaction_ids=[
txn.header_signature for txn in txns
]).SerializeToString()
batch = Batch(header=batch_header,
header_signature=self._signed_header(batch_header),
transactions=txns)
return batch
def generate_transaction(self, payload='txn', deps=None):
payload_encoded = payload.encode('utf-8')
hasher = hashlib.sha512()
hasher.update(payload_encoded)
txn_header = TransactionHeader(
dependencies=([] if deps is None else deps),
batcher_pubkey=self.public_key,
family_name='test',
family_version='1',
nonce=_generate_id(16),
payload_encoding="text",
payload_sha512=hasher.hexdigest().encode(),
signer_pubkey=self.public_key).SerializeToString()
txn = Transaction(header=txn_header,
header_signature=self._signed_header(txn_header),
payload=payload_encoded)
return txn
def _generate_batch_from_payload(self, payload):
txn = self.generate_transaction(payload)
batch_header = BatchHeader(signer_pubkey=self.public_key,
transaction_ids=[txn.header_signature
]).SerializeToString()
batch = Batch(header=batch_header,
header_signature=self._signed_header(batch_header),
transactions=[txn])
return batch
def _signed_header(self, header):
return signing.sign(header, self.signing_key)
class BlockTreeManager(object):
def block_def(self,
add_to_store=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=1
):
return {
"add_to_store": add_to_store,
"batch_count": batch_count,
"status": status,
"invalid_consensus": invalid_consensus,
"invalid_batch": invalid_batch,
"invalid_signature": invalid_signature,
"weight": weight
}
def __init__(self):
self.block_store = {}
self._new_block = None
self.block_publisher = BlockPublisher(
consensus=TestModePublisher(),
transaction_executor=MockTransactionExecutor(),
send_message=self._send_message,
squash_handler=None)
block = self.generate_block(add_to_store=True,
status=BlockStatus.Valid)
self.set_chain_head(block)
def _send_message(self, block):
self._new_block = block
def _get_block_id(self, block):
if (block is None):
return None
elif isinstance(block, Block) or isinstance(block, BlockState) or \
isinstance(block, BlockWrapper):
return block.header_signature
elif isinstance(block, basestring):
return block
else:
return str(block)
def _get_block(self, block):
if (block is None):
return None
elif isinstance(block, Block):
return block
elif isinstance(block, BlockWrapper):
return block
elif isinstance(block, BlockState):
return block.block
elif isinstance(block, str):
return self.block_store[block]
else: # WTF try something crazy
return self.block_store[str(block)]
def set_chain_head(self, block):
self.block_store["chain_head_id"] = self._get_block_id(block)
@property
def chain_head(self):
return self.block_store[self.block_store["chain_head_id"]]
def generate_block(self, previous_block=None,
add_to_store=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=1):
previous = self._get_block(previous_block)
if previous is None:
previous = BlockWrapper(BlockHeader(
block_num=0,
previous_block_id="0000000000000000",
))
previous.set_signature(_generate_id())
previous_block_state = BlockState(
block_wrapper=previous,
weight=0,
status=BlockStatus.Valid)
self.block_store[previous.header_signature] = previous_block_state
self.block_publisher.on_chain_updated(previous)
while self._new_block is None:
self.block_publisher.on_batch_received(Batch())
self.block_publisher.on_check_publish_block(True)
block = self._new_block
self._new_block = None
header = BlockHeader()
header.ParseFromString(block.header)
block = BlockWrapper(header, block)
if invalid_signature:
block.set_signature("BAD")
if add_to_store:
block_state = BlockState(block_wrapper=block, weight=0)
block_state.status = status
self.block_store[block.header_signature] = block_state
return block
def generate_chain(self, root_block,
blocks):
# block options
# valid/invalid how
# add to store
out = []
if not isinstance(blocks, list):
blocks = self.generate_chain_definition(int(blocks))
previous = self._get_block(root_block)
for b in blocks:
new_block = self.generate_block(previous_block=previous,
**b)
out.append(new_block)
previous = new_block
return out
def generate_chain_definition(self, count):
out = []
for _ in range(0, count):
out.append(self.block_def())
return out
def __str__(self):
return str(self.block_store)
def __repr__(self):
return repr(self.block_store)
class BlockTreeManager(object):
def block_def(self,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=None
):
return {
"add_to_cache": add_to_cache,
"add_to_store": add_to_store,
"batch_count": batch_count,
"status": status,
"invalid_consensus": invalid_consensus,
"invalid_batch": invalid_batch,
"invalid_signature": invalid_signature,
"weight": weight
}
def __init__(self):
self.block_sender = MockBlockSender()
self.block_store = BlockStoreAdapter({})
self.block_cache = BlockCache(self.block_store)
self.signing_key = signing.generate_privkey()
self.public_key = signing.encode_pubkey(
signing.generate_pubkey(self.signing_key), "hex")
self.genesis_block = self._generate_genesis_block()
self.block_store[self.genesis_block.identifier] = self.genesis_block
self.set_chain_head(self.genesis_block)
self.block_publisher = BlockPublisher(
consensus=TestModePublisher(),
transaction_executor=MockTransactionExecutor(),
block_sender=self.block_sender,
squash_handler=None,
chain_head=self.genesis_block)
def _get_block_id(self, block):
if (block is None):
return None
elif isinstance(block, Block) or\
isinstance(block, BlockWrapper):
return block.header_signature
elif isinstance(block, basestring):
return block
else:
return str(block)
def _get_block(self, block):
if (block is None):
return None
elif isinstance(block, Block):
return BlockWrapper(block)
elif isinstance(block, BlockWrapper):
return block
elif isinstance(block, str):
return self.block_cache[block]
else: # WTF try something crazy
return self.block_cache[str(block)]
def set_chain_head(self, block):
self.block_store.set_chain_head(self._get_block_id(block))
@property
def chain_head(self):
return self.block_store.chain_head
def set_chain_head(self, block):
self.block_store.set_chain_head(block.identifier)
def generate_block(self, previous_block=None,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=None):
previous = self._get_block(previous_block)
if previous is None:
previous = self.chain_head
self.block_publisher.on_chain_updated(previous)
while self.block_sender.new_block is None:
self.block_publisher.on_batch_received(Batch())
self.block_publisher.on_check_publish_block(True)
block = self.block_sender.new_block
self.block_sender.new_block = None
block = BlockWrapper(block)
if invalid_signature:
block.block.header_signature = "BAD"
block.weight = weight
block.status = status
if add_to_cache:
self.block_cache[block.identifier] = block
if add_to_store:
if block.weight is None:
tmv = TestModeVerifier()
block.weight = tmv.compute_block_weight(block)
self.block_store[block.identifier] = block
return block
def _generate_batch(self, payload):
payload_encoded = payload.encode('utf-8')
hasher = hashlib.sha512()
hasher.update(payload_encoded)
header = TransactionHeader()
header.batcher_pubkey = self.public_key
# txn.dependencies not yet
header.family_name = 'test'
header.family_version = '1'
header.nonce = _generate_id(16)
header.payload_encoding = "text"
header.payload_sha512 = hasher.hexdigest().encode()
header.signer_pubkey = self.public_key
txn = Transaction()
header_bytes = header.SerializeToString()
txn.header = header_bytes
txn.header_signature = signing.sign(header_bytes, self.signing_key)
txn.payload = payload_encoded
batch_header = BatchHeader()
batch_header.signer_pubkey = self.public_key
batch_header.transaction_ids.extend([txn.header_signature])
batch = Batch()
header_bytes = batch_header.SerializeToString()
batch.header = header_bytes
batch.header_signature = signing.sign(header_bytes, self.signing_key)
batch.transactions.extend([txn])
return batch
def _generate_genesis_block(self):
genesis_header = BlockHeader(
previous_block_id=NULL_BLOCK_IDENTIFIER,
signer_pubkey=self.public_key,
block_num=0)
block = BlockBuilder(genesis_header)
block.add_batches([self._generate_batch("Genesis")])
header_bytes = block.block_header.SerializeToString()
signature = signing.sign(header_bytes, self.signing_key)
block.set_signature(signature)
return BlockWrapper(block.build_block())
def generate_chain(self, root_block, blocks, params=None):
"""
Generate a new chain based on the root block and place it in the
block cache.
"""
if params is None:
params = {}
out = []
if not isinstance(blocks, list):
blocks = self.generate_chain_definition(int(blocks), params)
if root_block is None:
previous = self._generate_genesis_block()
self.block_store[previous.identifier] = previous
else:
previous = self._get_block(root_block)
for block in blocks:
new_block = self.generate_block(previous_block=previous, **block)
out.append(new_block)
previous = new_block
return out
def generate_chain_definition(self, count, params=None):
if params is None:
params = {}
out = []
for _ in range(0, count):
out.append(self.block_def(**params))
return out
def __str__(self):
return str(self.block_cache)
def __repr__(self):
return repr(self.block_cache)
class BlockTreeManager(object):
def __str__(self):
return str(self.block_cache)
def __repr__(self):
return repr(self.block_cache)
def __init__(self, with_genesis=True):
self.block_sender = MockBlockSender()
self.batch_sender = MockBatchSender()
self.block_store = BlockStore(DictDatabase())
self.block_cache = BlockCache(self.block_store)
self.state_db = {}
# add the mock reference to the consensus
consensus_setting_addr = SettingsView.setting_address(
'sawtooth.consensus.algorithm')
self.state_db[consensus_setting_addr] = _setting_entry(
'sawtooth.consensus.algorithm', 'test_journal.mock_consensus')
self.state_view_factory = MockStateViewFactory(self.state_db)
self.signing_key = signing.generate_privkey()
self.public_key = signing.generate_pubkey(self.signing_key)
self.identity_signing_key = signing.generate_privkey()
chain_head = None
if with_genesis:
self.genesis_block = self.generate_genesis_block()
self.set_chain_head(self.genesis_block)
chain_head = self.genesis_block
self.block_publisher = BlockPublisher(
transaction_executor=MockTransactionExecutor(),
block_cache=self.block_cache,
state_view_factory=self.state_view_factory,
block_sender=self.block_sender,
batch_sender=self.block_sender,
squash_handler=None,
chain_head=chain_head,
identity_signing_key=self.identity_signing_key,
data_dir=None,
config_dir=None)
@property
def chain_head(self):
return self.block_store.chain_head
def set_chain_head(self, block):
self.block_store.update_chain([block], [])
def generate_block(self, previous_block=None,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=0):
previous = self._get_block(previous_block)
if previous is None:
previous = self.chain_head
self.block_publisher.on_chain_updated(previous)
while self.block_sender.new_block is None:
self.block_publisher.on_batch_received(
self._generate_batch_from_payload(''))
self.block_publisher.on_check_publish_block(True)
block_from_sender = self.block_sender.new_block
self.block_sender.new_block = None
block_wrapper = BlockWrapper(block_from_sender)
if invalid_signature:
block_wrapper.block.header_signature = "BAD"
if invalid_consensus:
block_wrapper.header.consensus = b'BAD'
if invalid_batch:
block_wrapper.block.batches.extend(
[self._generate_batch_from_payload('BAD')])
block_wrapper.weight = weight
block_wrapper.status = status
if add_to_cache:
self.block_cache[block_wrapper.identifier] = block_wrapper
if add_to_store:
self.block_store[block_wrapper.identifier] = block_wrapper
LOGGER.debug("Generated %s", dumps_block(block_wrapper))
return block_wrapper
def generate_chain(self, root_block, blocks, params=None):
"""
Generate a new chain based on the root block and place it in the
block cache.
"""
if params is None:
params = {}
if root_block is None:
previous = self.generate_genesis_block()
self.block_store[previous.identifier] = previous
else:
previous = self._get_block(root_block)
try:
block_defs = [self._block_def(**params) for _ in range(blocks)]
except TypeError:
block_defs = blocks
out = []
for block_def in block_defs:
new_block = self.generate_block(
previous_block=previous, **block_def)
out.append(new_block)
previous = new_block
return out
def _generate_block(self, payload, previous_block_id, block_num):
header = BlockHeader(
previous_block_id=previous_block_id,
signer_pubkey=self.public_key,
block_num=block_num)
block_builder = BlockBuilder(header)
block_builder.add_batches(
[self._generate_batch_from_payload(payload)])
header_bytes = block_builder.block_header.SerializeToString()
signature = signing.sign(header_bytes, self.identity_signing_key)
block_builder.set_signature(signature)
block_wrapper = BlockWrapper(block_builder.build_block())
LOGGER.debug("Generated %s", dumps_block(block_wrapper))
return block_wrapper
def generate_genesis_block(self):
return self._generate_block(
payload='Genesis',
previous_block_id=NULL_BLOCK_IDENTIFIER,
block_num=0)
def _block_def(self,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=0):
return {
"add_to_cache": add_to_cache,
"add_to_store": add_to_store,
"batch_count": batch_count,
"status": status,
"invalid_consensus": invalid_consensus,
"invalid_batch": invalid_batch,
"invalid_signature": invalid_signature,
"weight": weight
}
def _get_block_id(self, block):
if block is None:
return None
elif isinstance(block, Block) or\
isinstance(block, BlockWrapper):
return block.header_signature
elif isinstance(block, basestring):
return block
else:
return str(block)
def _get_block(self, block):
if block is None:
return None
elif isinstance(block, Block):
return BlockWrapper(block)
elif isinstance(block, BlockWrapper):
return block
elif isinstance(block, str):
return self.block_cache[block]
else: # WTF try something crazy
return self.block_cache[str(block)]
def generate_batch(self, txn_count=2, missing_deps=False,
txns=None):
if txns is None:
txns = [
self.generate_transaction('txn_' + str(i))
for i in range(txn_count)
]
if missing_deps:
target_txn = txns[-1]
txn_missing_deps = self.generate_transaction(
payload='this one has a missing dependency',
deps=[target_txn.header_signature])
# replace the targeted txn with the missing deps txn
txns[-1] = txn_missing_deps
batch_header = BatchHeader(
signer_pubkey=self.public_key,
transaction_ids=[txn.header_signature for txn in txns]
).SerializeToString()
batch = Batch(
header=batch_header,
header_signature=self._signed_header(batch_header),
transactions=txns)
LOGGER.debug("Generated %s", dumps_batch(batch))
return batch
def generate_transaction(self, payload='txn', deps=None):
payload_encoded = payload.encode('utf-8')
hasher = hashlib.sha512()
hasher.update(payload_encoded)
txn_header = TransactionHeader(
dependencies=([] if deps is None else deps),
batcher_pubkey=self.public_key,
family_name='test',
family_version='1',
nonce=_generate_id(16),
payload_encoding="text",
payload_sha512=hasher.hexdigest().encode(),
signer_pubkey=self.public_key
).SerializeToString()
txn = Transaction(
header=txn_header,
header_signature=self._signed_header(txn_header),
payload=payload_encoded)
return txn
def _generate_batch_from_payload(self, payload):
txn = self.generate_transaction(payload)
batch_header = BatchHeader(
signer_pubkey=self.public_key,
transaction_ids=[txn.header_signature]
).SerializeToString()
batch = Batch(
header=batch_header,
header_signature=self._signed_header(batch_header),
transactions=[txn])
LOGGER.debug("Generated %s", dumps_batch(batch))
return batch
def _signed_header(self, header):
return signing.sign(
header,
self.signing_key)
class BlockTreeManager(object):
def block_def(self,
add_to_store=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=1
):
return {
"add_to_store": add_to_store,
"batch_count": batch_count,
"status": status,
"invalid_consensus": invalid_consensus,
"invalid_batch": invalid_batch,
"invalid_signature": invalid_signature,
"weight": weight
}
def __init__(self):
self.block_sender = MockBlockSender()
self.block_store = BlockStoreAdapter({})
self.block_cache = BlockCache(self.block_store)
self._new_block = None
self.block_publisher = BlockPublisher(
consensus=TestModePublisher(),
transaction_executor=MockTransactionExecutor(),
block_sender=self.block_sender,
squash_handler=None,
chain_head=self._generate_genesis_block())
block = self.generate_block(add_to_store=True,
status=BlockStatus.Valid)
self.set_chain_head(block)
def _get_block_id(self, block):
if (block is None):
return None
elif isinstance(block, Block) or\
isinstance(block, BlockWrapper):
return block.header_signature
elif isinstance(block, basestring):
return block
else:
return str(block)
def _get_block(self, block):
if (block is None):
return None
elif isinstance(block, Block):
return BlockWrapper(block)
elif isinstance(block, BlockWrapper):
return block
elif isinstance(block, str):
return self.block_cache[block]
else: # WTF try something crazy
return self.block_cache[str(block)]
def set_chain_head(self, block):
self.block_store.set_chain_head(self._get_block_id(block))
@property
def chain_head(self):
return self.block_store.chain_head
def generate_block(self, previous_block=None,
add_to_store=False,
add_to_cache=False,
batch_count=0,
status=BlockStatus.Unknown,
invalid_consensus=False,
invalid_batch=False,
invalid_signature=False,
weight=1):
previous = self._get_block(previous_block)
if previous is None:
previous = self._generate_genesis_block(_generate_id())
previous.set_signature(_generate_id())
previous_block = BlockWrapper(
block=previous.build_block(),
weight=0,
status=BlockStatus.Valid)
self.block_cache[previous_block.identifier] = previous_block
self.block_publisher.on_chain_updated(previous_block)
while self.block_sender.new_block is None:
self.block_publisher.on_batch_received(Batch())
self.block_publisher.on_check_publish_block(True)
block = self.block_sender.new_block
self.block_sender.new_block = None
block = BlockWrapper(block)
if invalid_signature:
block.block.header_signature = "BAD"
block.weight = 0
block.status = status
if add_to_cache:
self.block_cache[block.identifier] = block
if add_to_store:
self.block_store[block.identifier] = block
return block
def _generate_genesis_block(self, header_sig="genesis"):
genesis_header = BlockHeader(
previous_block_id="0000000000000000",
block_num=0)
block = BlockBuilder(genesis_header)
block.set_signature(header_sig)
return block
def generate_chain(self, root_block, blocks):
"""
Generate a new chain based on the root block and place it in the
block cache.
"""
out = []
if not isinstance(blocks, list):
blocks = self.generate_chain_definition(int(blocks))
previous = self._get_block(root_block)
for block in blocks:
new_block = self.generate_block(previous_block=previous, **block)
out.append(new_block)
previous = new_block
return out
def generate_chain_definition(self, count):
out = []
for _ in range(0, count):
out.append(self.block_def())
return out
def __str__(self):
return str(self.block_cache)
def __repr__(self):
return repr(self.block_cache)