bitcoin/test/functional/test_framework/coverage.py
Russell Yanofsky e02007aade Limit AuthServiceProxyWrapper.__getattr__ wrapping
Change AuthServiceProxyWrapper.__getattr__ to only wrap proxied attributes, not
real attributes. This way AuthServiceProxyWrapper can continue logging RPC
calls without complicating other object usages, and special case handling for
the .url property can be dropped.
2017-10-03 15:25:00 -04:00

102 lines
3.1 KiB
Python

#!/usr/bin/env python3
# Copyright (c) 2015-2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Utilities for doing coverage analysis on the RPC interface.
Provides a way to track which RPC commands are exercised during
testing.
"""
import os
REFERENCE_FILENAME = 'rpc_interface.txt'
class AuthServiceProxyWrapper(object):
"""
An object that wraps AuthServiceProxy to record specific RPC calls.
"""
def __init__(self, auth_service_proxy_instance, coverage_logfile=None):
"""
Kwargs:
auth_service_proxy_instance (AuthServiceProxy): the instance
being wrapped.
coverage_logfile (str): if specified, write each service_name
out to a file when called.
"""
self.auth_service_proxy_instance = auth_service_proxy_instance
self.coverage_logfile = coverage_logfile
def __getattr__(self, name):
return_val = getattr(self.auth_service_proxy_instance, name)
if not isinstance(return_val, type(self.auth_service_proxy_instance)):
# If proxy getattr returned an unwrapped value, do the same here.
return return_val
return AuthServiceProxyWrapper(return_val, self.coverage_logfile)
def __call__(self, *args, **kwargs):
"""
Delegates to AuthServiceProxy, then writes the particular RPC method
called to a file.
"""
return_val = self.auth_service_proxy_instance.__call__(*args, **kwargs)
rpc_method = self.auth_service_proxy_instance._service_name
if self.coverage_logfile:
with open(self.coverage_logfile, 'a+', encoding='utf8') as f:
f.write("%s\n" % rpc_method)
return return_val
def __truediv__(self, relative_uri):
return AuthServiceProxyWrapper(self.auth_service_proxy_instance / relative_uri)
def get_filename(dirname, n_node):
"""
Get a filename unique to the test process ID and node.
This file will contain a list of RPC commands covered.
"""
pid = str(os.getpid())
return os.path.join(
dirname, "coverage.pid%s.node%s.txt" % (pid, str(n_node)))
def write_all_rpc_commands(dirname, node):
"""
Write out a list of all RPC functions available in `bitcoin-cli` for
coverage comparison. This will only happen once per coverage
directory.
Args:
dirname (str): temporary test dir
node (AuthServiceProxy): client
Returns:
bool. if the RPC interface file was written.
"""
filename = os.path.join(dirname, REFERENCE_FILENAME)
if os.path.isfile(filename):
return False
help_output = node.help().split('\n')
commands = set()
for line in help_output:
line = line.strip()
# Ignore blanks and headers
if line and not line.startswith('='):
commands.add("%s\n" % line.split()[0])
with open(filename, 'w', encoding='utf8') as f:
f.writelines(list(commands))
return True