def _connect(self,
provider: Web3Providers = None,
provider_uri: str = None):
self._attach_provider(provider=provider, provider_uri=provider_uri)
self.log.info("Connecting to {}".format(self.provider_uri))
if self.__provider is NO_BLOCKCHAIN_CONNECTION:
raise self.NoProvider(
"There are no configured blockchain providers")
# Connect if not connected
try:
w3 = self.Web3(provider=self.__provider)
self.client = Web3Client.from_w3(w3=w3)
except requests.ConnectionError: # RPC
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is RPC enabled?'
)
except FileNotFoundError: # IPC File Protocol
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is IPC enabled?'
)
# Check connection
return self.is_connected
def connect(self):
# Spawn child process
if self._provider_process:
self._provider_process.start()
provider_uri = self._provider_process.provider_uri(scheme='file')
else:
provider_uri = self.provider_uri
self.log.info(
f"Using external Web3 Provider '{self.provider_uri}'")
# Attach Provider
self._attach_provider(provider=self._provider,
provider_uri=provider_uri)
self.log.info("Connecting to {}".format(self.provider_uri))
if self._provider is NO_BLOCKCHAIN_CONNECTION:
raise self.NoProvider(
"There are no configured blockchain providers")
# Connect if not connected
try:
self.w3 = self.Web3(provider=self._provider)
self.client = Web3Client.from_w3(w3=self.w3)
except requests.ConnectionError: # RPC
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is RPC enabled?'
)
except FileNotFoundError: # IPC File Protocol
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is IPC enabled?'
)
else:
self.attach_middleware()
return self.is_connected
def connect(self,
provider: Web3Providers = None,
provider_uri: str = None,
fetch_registry: bool = True,
sync_now: bool = True):
# Spawn child process
if self._provider_process:
self._provider_process.start()
provider_uri = self._provider_process.provider_uri(scheme='file')
else:
self.log.info(f"Using external Web3 Provider '{provider_uri}'")
# Attach Provider
self._attach_provider(provider=provider, provider_uri=provider_uri)
self.log.info("Connecting to {}".format(self.provider_uri))
if self._provider is NO_BLOCKCHAIN_CONNECTION:
raise self.NoProvider(
"There are no configured blockchain providers")
# Connect Web3 Instance
try:
self.w3 = self.Web3(provider=self._provider)
self.client = Web3Client.from_w3(w3=self.w3)
except requests.ConnectionError: # RPC
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is RPC enabled?'
)
except FileNotFoundError: # IPC File Protocol
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is IPC enabled?'
)
else:
self.attach_middleware()
# Establish contact with NuCypher contracts
if not self.registry:
self._configure_registry(fetch_registry=fetch_registry)
# Wait for chaindata sync
if sync_now:
self.client.sync()
return self.is_connected
def connect(self, *args, **kwargs):
self._attach_provider(testerchain.provider)
self.w3 = self.Web3(provider=self._provider)
self.client = Web3Client.from_w3(w3=self.w3)
def connect(self,
fetch_registry: bool = True,
sync_now: bool = False,
emitter: StdoutEmitter = None):
# Spawn child process
if self._provider_process:
self._provider_process.start()
provider_uri = self._provider_process.provider_uri(scheme='file')
else:
provider_uri = self.provider_uri
self.log.info(
f"Using external Web3 Provider '{self.provider_uri}'")
# Attach Provider
self._attach_provider(provider=self._provider,
provider_uri=provider_uri)
self.log.info("Connecting to {}".format(self.provider_uri))
if self._provider is NO_BLOCKCHAIN_CONNECTION:
raise self.NoProvider(
"There are no configured blockchain providers")
# Connect if not connected
try:
self.w3 = self.Web3(provider=self._provider)
self.client = Web3Client.from_w3(w3=self.w3)
except requests.ConnectionError: # RPC
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is RPC enabled?'
)
except FileNotFoundError: # IPC File Protocol
raise self.ConnectionFailed(
f'Connection Failed - {str(self.provider_uri)} - is IPC enabled?'
)
else:
self.attach_middleware()
# Establish contact with NuCypher contracts
if not self.registry:
self._configure_registry(fetch_registry=fetch_registry)
# Wait for chaindata sync
if sync_now:
sync_state = self.client.sync()
if emitter:
import click
emitter.echo(
f"Syncing: {self.client.chain_name.capitalize()}. Waiting for sync to begin."
)
while not len(self.client.peers):
emitter.echo("waiting for peers...")
time.sleep(5)
peer_count = len(self.client.peers)
emitter.echo(
f"Found {'an' if peer_count == 1 else peer_count} Ethereum peer{('s' if peer_count>1 else '')}."
)
try:
emitter.echo("Beginning sync...")
initial_state = next(sync_state)
except StopIteration: # will occur if no syncing needs to happen
emitter.echo("Local blockchain data is already synced.")
return True
prior_state = initial_state
total_blocks_to_sync = int(initial_state.get(
'highestBlock', 0)) - int(
initial_state.get('currentBlock', 0))
with click.progressbar(length=total_blocks_to_sync,
label="sync progress") as bar:
for syncdata in sync_state:
if syncdata:
blocks_accomplished = int(
syncdata['currentBlock']) - int(
prior_state.get('currentBlock', 0))
bar.update(blocks_accomplished)
prior_state = syncdata
else:
try:
for syncdata in sync_state:
self.client.log.info(
f"Syncing {syncdata['currentBlock']}/{syncdata['highestBlock']}"
)
except TypeError: # it's already synced
return True
return self.is_connected
