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import logging
import os
import tempfile
#############################################################################
# Code to implement the scenarios.
class Step:
def __init__(self):
self._kind = None
self._text = None
self._args = {}
self._function = None
self._cleanup = None
def set_kind(self, kind):
self._kind = kind
def set_text(self, text):
self._text = text
def set_arg(self, name, value):
self._args[name] = value
def set_function(self, function):
self._function = function
def set_cleanup(self, cleanup):
self._cleanup = cleanup
def do(self, ctx):
print(" step: {} {}".format(self._kind, self._text))
logging.info("step: {} {}".format(self._kind, self._text))
self._function(ctx, **self._args)
def cleanup(self, ctx):
if self._cleanup:
print(" cleanup: {} {}".format(self._kind, self._text))
logging.info("cleanup: {} {}".format(self._kind, self._text))
self._cleanup(ctx, **self._args)
_logged_env = False
class Scenario:
def __init__(self, ctx):
self._title = None
self._steps = []
self._ctx = ctx
def get_title(self):
return self._title
def set_title(self, title):
self._title = title
def append_step(self, step):
self._steps.append(step)
def run(self, datadir, extra_env):
print("scenario: {}".format(self._title))
logging.info("Scenario: {}".format(self._title))
scendir = tempfile.mkdtemp(dir=datadir)
os.chdir(scendir)
self._set_environment_variables_to(scendir, extra_env)
done = []
ctx = self._ctx
try:
for step in self._steps:
step.do(ctx)
done.append(step)
except Exception as e:
logging.error(str(e), exc_info=True)
for step in reversed(done):
step.cleanup(ctx)
raise
for step in reversed(done):
step.cleanup(ctx)
def _set_environment_variables_to(self, scendir, extra_env):
log_value = globals()["log_value"]
overrides = {
"SHELL": "/bin/sh",
"HOME": scendir,
"TMPDIR": scendir,
}
os.environ.update(overrides)
os.environ.update(extra_env)
global _logged_env
if not _logged_env:
_logged_env = True
log_value("extra_env", 0, dict(extra_env))
log_value("overrides", 0, dict(overrides))
log_value("os.environ", 0, dict(os.environ))
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