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102 lines
2.7 KiB
Python
102 lines
2.7 KiB
Python
"""
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This module contains utilities for doing coverage analysis on the RPC
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interface.
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It provides a way to track which RPC commands are exercised during
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testing.
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"""
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import os
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REFERENCE_FILENAME = 'rpc_interface.txt'
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class AuthServiceProxyWrapper(object):
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"""
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An object that wraps AuthServiceProxy to record specific RPC calls.
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"""
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def __init__(self, auth_service_proxy_instance, coverage_logfile=None):
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"""
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Kwargs:
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auth_service_proxy_instance (AuthServiceProxy): the instance
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being wrapped.
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coverage_logfile (str): if specified, write each service_name
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out to a file when called.
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"""
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self.auth_service_proxy_instance = auth_service_proxy_instance
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self.coverage_logfile = coverage_logfile
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def __getattr__(self, *args, **kwargs):
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return_val = self.auth_service_proxy_instance.__getattr__(
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*args, **kwargs)
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return AuthServiceProxyWrapper(return_val, self.coverage_logfile)
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def __call__(self, *args, **kwargs):
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"""
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Delegates to AuthServiceProxy, then writes the particular RPC method
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called to a file.
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"""
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return_val = self.auth_service_proxy_instance.__call__(*args, **kwargs)
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rpc_method = self.auth_service_proxy_instance._service_name
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if self.coverage_logfile:
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with open(self.coverage_logfile, 'a+') as f:
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f.write("%s\n" % rpc_method)
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return return_val
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@property
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def url(self):
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return self.auth_service_proxy_instance.url
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def get_filename(dirname, n_node):
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"""
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Get a filename unique to the test process ID and node.
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This file will contain a list of RPC commands covered.
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"""
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pid = str(os.getpid())
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return os.path.join(
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dirname, "coverage.pid%s.node%s.txt" % (pid, str(n_node)))
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def write_all_rpc_commands(dirname, node):
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"""
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Write out a list of all RPC functions available in `bitcoin-cli` for
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coverage comparison. This will only happen once per coverage
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directory.
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Args:
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dirname (str): temporary test dir
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node (AuthServiceProxy): client
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Returns:
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bool. if the RPC interface file was written.
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"""
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filename = os.path.join(dirname, REFERENCE_FILENAME)
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if os.path.isfile(filename):
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return False
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help_output = node.help().split('\n')
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commands = set()
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for line in help_output:
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line = line.strip()
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# Ignore blanks and headers
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if line and not line.startswith('='):
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commands.add("%s\n" % line.split()[0])
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with open(filename, 'w') as f:
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f.writelines(list(commands))
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return True
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