def create_context(self, state_hash, base_contexts, inputs, outputs):
"""Create a ExecutionContext to run a transaction against.
Args:
state_hash: (str): Merkle root to base state on.
base_contexts (list of str): Context ids of contexts that will
have their state applied to make this context.
inputs (list of str): Addresses that can be read from.
outputs (list of str): Addresses that can be written to.
Returns:
context_id (str): the unique context_id of the session
"""
for address in inputs:
if not self.namespace_is_valid(address):
raise CreateContextException(
"Address or namespace {} listed in inputs is not "
"valid".format(address))
for address in outputs:
if not self.namespace_is_valid(address):
raise CreateContextException(
"Address or namespace {} listed in outputs is not "
"valid".format(address))
addresses_to_find = [add for add in inputs if len(add) == 70]
address_values, reads = self._find_address_values_in_chain(
base_contexts=base_contexts,
addresses_to_find=addresses_to_find)
context = ExecutionContext(
state_hash=state_hash,
read_list=inputs,
write_list=outputs,
base_context_ids=base_contexts)
contexts_asked_not_found = [cid for cid in base_contexts
if cid not in self._contexts]
if contexts_asked_not_found:
raise KeyError(
"Basing a new context off of context ids {} "
"that are not in context manager".format(
contexts_asked_not_found))
context.create_initial(address_values)
self._contexts[context.session_id] = context
if reads:
context.create_prefetch(reads)
self._address_queue.put_nowait(
(context.session_id, state_hash, reads))
return context.session_id
def create_context(self, state_hash, base_contexts, inputs, outputs):
"""Create a ExecutionContext to run a transaction against.
Args:
state_hash: (str): Merkle root to base state on.
base_contexts (list of str): Context ids of contexts that will
have their state applied to make this context.
inputs (list of str): Addresses that can be read from.
outputs (list of str): Addresses that can be written to.
Returns:
context_id (str): the unique context_id of the session
"""
for address in inputs:
if not self.namespace_is_valid(address):
raise CreateContextException(
"Address or namespace {} listed in inputs is not "
"valid".format(address))
for address in outputs:
if not self.namespace_is_valid(address):
raise CreateContextException(
"Address or namespace {} listed in outputs is not "
"valid".format(address))
addresses_to_find = [add for add in inputs if len(add) == 70]
address_values, reads = self._find_address_values_in_chain(
base_contexts=base_contexts,
addresses_to_find=addresses_to_find)
context = ExecutionContext(
state_hash=state_hash,
read_list=inputs,
write_list=outputs,
base_context_ids=base_contexts)
contexts_asked_not_found = [cid for cid in base_contexts
if cid not in self._contexts]
if contexts_asked_not_found:
raise KeyError(
"Basing a new context off of context ids {} "
"that are not in context manager".format(
contexts_asked_not_found))
context.create_initial(address_values)
self._contexts[context.session_id] = context
if reads:
context.create_prefetch(reads)
self._address_queue.put_nowait(
(context.session_id, state_hash, reads))
return context.session_id