def do_add_cmd(config, args):
"""subcommand to add an entry to the eservice database
"""
parser = argparse.ArgumentParser()
parser.add_argument('-u',
'--url',
help='enclave service url',
required=True)
parser.add_argument('-n',
'--name',
help='name to give to this enclave service')
options = parser.parse_args(args)
_load_database_(config)
try:
ledger_config = config['Ledger']
if not options.name:
eservice_db.add_by_url(ledger_config, options.url)
else:
eservice_db.add_by_url(ledger_config,
options.url,
name=options.name)
except Exception as e:
logger.error('unable to add eservice data for %s; %s', options.url,
str(e))
sys.exit(-1)
_save_database_(config)
def command_eservice_db(state, bindings, pargs):
"""controller command to manage the enclave service database
"""
parser = argparse.ArgumentParser(prog='eservice')
subparsers = parser.add_subparsers(dest='command')
add_parser = subparsers.add_parser(
'add', description='add an eservice to the database')
add_parser.add_argument('--url',
help='URL for the enclave service to add',
type=str,
required=True)
add_parser.add_argument('--name',
help='Short name for the enclave service',
type=str,
required=True)
clear_parser = subparsers.add_parser(
'clear', description='remove all eservices in the database')
list_parser = subparsers.add_parser(
'list', description='list eservices in the database')
load_parser = subparsers.add_parser(
'load', description='load an eservice database')
load_parser.add_argument('--database',
help='Name of the eservice database to use',
type=str,
required=True)
merge_group = load_parser.add_mutually_exclusive_group(required=False)
merge_group.add_argument('--merge',
help='Merge new database with current db',
dest='merge',
action='store_true')
merge_group.add_argument('--no-merge',
help='Overwrite current db with new database',
dest='merge',
action='store_false')
load_parser.set_defaults(merge=False)
remove_parser = subparsers.add_parser(
'remove', description='remove eservice from the database')
remove_group = remove_parser.add_mutually_exclusive_group(required=True)
remove_group.add_argument('--name',
help='Short name for enclave service to remove',
type=str)
save_parser = subparsers.add_parser(
'save', description='save the current eservice database')
save_parser.add_argument('--database',
help='Name of the eservice database to use',
type=str,
required=True)
options = parser.parse_args(pargs)
default_database = state.get(['Service', 'EnclaveServiceDatabaseFile'])
ledger_config = state.get(['Sawtooth'])
if options.command == 'add':
if not eservice_db.add_by_url(
ledger_config, options.url, name=options.name, update=True):
raise Exception(
'failed to add eservice {0} to the database'.format(
options.name))
return
if options.command == 'clear':
eservice_db.clear_all_data()
return
if options.command == 'list':
enclave_names = list(eservice_db.get_enclave_names())
enclave_names.sort()
for enclave_name in enclave_names:
enclave_info = eservice_db.get_by_name(enclave_name)
enclave_short_id = _hashed_identity_(enclave_info.enclave_id)
print("{0:<18} {1:<18} {2}".format(enclave_name, enclave_short_id,
enclave_info.url))
if options.command == 'load':
eservice_db.load_database(options.database, options.merge)
return
if options.command == 'remove':
eservice_db.remove_by_name(name=options.name)
return
if options.command == 'save':
eservice_db.save_database(options.database, True)
return
raise Exception('unknown subcommand')
def CreateAndRegisterEnclave(config):
"""
creates and registers an enclave
IMPORTANT: if an eservice is available it will be used,
otherwise, the code interfaces directly with the python/swig wrapper in the eservice code
"""
global enclave
global txn_dependencies
ledger_config = config.get('Sawtooth')
interpreter = config['Contract']['Interpreter']
# if we are using the eservice then there is nothing to register since
# the eservice has already registered the enclave
if use_eservice:
enclaveclients = []
try:
for url in config['Service']['EnclaveServiceURLs']:
einfo = db.add_by_url(ledger_config, url)
if einfo is None:
logger.error("unable to connect to enclave service; %s",
url)
sys.exit(-1)
if einfo.client.interpreter != interpreter:
logger.error(
'contract and enclave expect different interpreters; <%s> != <%s>',
einfo.client.interpreter, interpreter)
sys.exit(-1)
enclaveclients.append(einfo.client)
except Exception as e:
logger.error('unable to setup enclave services; %s', str(e))
sys.exit(-1)
return enclaveclients
# not using an eservice so build the local enclave
try:
global block_store
block_store_file = config['StorageService']['BlockStore']
block_store = BlockStoreManager(block_store_file,
create_block_store=True)
except Exception as e:
block_store.close()
logger.error('failed to initialize the block store; %s', str(e))
sys.exit(-1)
try:
enclave_helper.initialize_enclave(config)
enclave = enclave_helper.Enclave.create_new_enclave()
except Exception as e:
logger.exception('failed to initialize the enclave; %s', str(e))
block_store.close()
sys.exit(-1)
if enclave.interpreter != interpreter:
logger.error(
'contract and enclave expect different interpreters; %s != %s',
enclave.interpreter, interpreter)
ErrorShutdown()
try:
enclave.attach_block_store(block_store)
except Exception as e:
logger.exception('failed to attach block store; %s', str(e))
ErrorShutdown()
try:
ledger_config = config.get('Sawtooth')
if use_ledger:
txnid = enclave.register_enclave(ledger_config)
logger.info('enclave registration successful')
enclave.verify_registration(ledger_config)
logger.info('verified enclave registration')
else:
logger.debug('no ledger config; skipping enclave registration')
except Exception as e:
logger.exception('failed to register the enclave; %s', str(e))
ErrorShutdown()
return [enclave]
def command_eservice_db(state, bindings, pargs):
"""controller command to manage the enclave service database
"""
parser = argparse.ArgumentParser(prog='eservice_db')
parser.add_argument('-q',
'--quiet',
help='Do not print the result',
action='store_true')
subparsers = parser.add_subparsers(dest='command')
add_parser = subparsers.add_parser(
'add', description='add an eservice to the database')
add_parser.add_argument('--url',
help='URL for the enclave service to add',
type=str,
required=True)
add_parser.add_argument('--name',
help='Short name for the enclave service',
type=str,
required=True)
clear_parser = subparsers.add_parser(
'clear', description='remove all eservices in the database')
list_parser = subparsers.add_parser(
'list', description='list eservices in the database')
info_parser = subparsers.add_parser(
'info', description='get information about a specific eservice')
info_parser.add_argument('--name',
help='Short name for enclave service',
type=str,
required=True)
info_parser.add_argument('-s',
'--symbol',
help='binding symbol for the result',
type=str)
info_parser.add_argument('-f',
'--field',
help='field to display',
type=str)
load_parser = subparsers.add_parser(
'load', description='load an eservice database')
load_parser.add_argument('--database',
help='Name of the eservice database to use',
type=str,
required=True)
merge_group = load_parser.add_mutually_exclusive_group(required=False)
merge_group.add_argument('--merge',
help='Merge new database with current db',
dest='merge',
action='store_true')
merge_group.add_argument('--no-merge',
help='Overwrite current db with new database',
dest='merge',
action='store_false')
load_parser.set_defaults(merge=False)
remove_parser = subparsers.add_parser(
'remove', description='remove eservice from the database')
remove_group = remove_parser.add_mutually_exclusive_group(required=True)
remove_group.add_argument('--name',
help='Short name for enclave service to remove',
type=str)
save_parser = subparsers.add_parser(
'save', description='save the current eservice database')
save_parser.add_argument('--database',
help='Name of the eservice database to use',
type=str,
required=True)
options = parser.parse_args(pargs)
default_database = state.get(['Service', 'EnclaveServiceDatabaseFile'])
ledger_config = state.get(['Ledger'])
if options.command == 'add':
if not eservice_db.add_by_url(
ledger_config, options.url, name=options.name, update=True):
raise Exception(
'failed to add eservice {0} to the database'.format(
options.name))
return
if options.command == 'clear':
eservice_db.clear_all_data()
return
if options.command == 'list':
enclave_names = list(eservice_db.get_enclave_names())
enclave_names.sort()
for enclave_name in enclave_names:
enclave_info = eservice_db.get_by_name(enclave_name)
enclave_short_id = _hashed_identity_(enclave_info.enclave_id)
print("{0:<18} {1:<18} {2}".format(enclave_name, enclave_short_id,
enclave_info.url))
return
if options.command == 'info':
enclave_info = eservice_db.get_by_name(options.name)
enclave_info.verify(state.get(['Ledger']))
enclave = {}
enclave['short_name'] = options.name
enclave['short_id'] = _hashed_identity_(enclave_info.enclave_id)
enclave['enclave_id'] = enclave_info.enclave_id
enclave['url'] = enclave_info.url
enclave['last_verified_time'] = enclave_info.last_verified_time
enclave['interpreter'] = enclave_info.client.interpreter
enclave[
'storage_service_url'] = enclave_info.client.storage_service_url
enclave['verifying_key'] = enclave_info.client.verifying_key
enclave['encryption_key'] = enclave_info.client.encryption_key
result = enclave
if options.field:
result = enclave[options.field]
if not options.quiet:
print(json.dumps(result, indent=4, sort_keys=True))
if options.symbol:
bindings.bind(options.symbol, result)
return
if options.command == 'load':
eservice_db.load_database(options.database, options.merge)
return
if options.command == 'remove':
eservice_db.remove_by_name(name=options.name)
return
if options.command == 'save':
eservice_db.save_database(options.database, True)
return
raise Exception('unknown subcommand')
serialized_db = json.dumps(serialized_einfo_list)
return hash(serialized_db)
# -----------------------------------------------------------------
# -----------------------------------------------------------------
ledger_config = {'LedgerURL': options.ledger}
# -----------------------------------------------------------------
# logger.info('create and load the database from the provided URLs')
# -----------------------------------------------------------------
names = []
enclave_count = 0
for url in options.url:
names.append('enclave_{0}'.format(enclave_count))
eservice_db.add_by_url(ledger_config, url, name=names[enclave_count])
enclave_count += 1
# -----------------------------------------------------------------
# logger.info('verify that the information in the database is consistent')
# -----------------------------------------------------------------
for e in names:
einfo_by_name = eservice_db.get_by_name(e)
einfo_by_enclave_id = eservice_db.get_by_enclave_id(
einfo_by_name.client.enclave_id)
# this can probably be simplified to just a comparison of
# the two objects
assert einfo_by_name.name == e
assert einfo_by_enclave_id.name == e
assert einfo_by_name.name == einfo_by_enclave_id.name