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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /testing/web-platform/harness/wptrunner/update/base.py
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'testing/web-platform/harness/wptrunner/update/base.py')
-rw-r--r--testing/web-platform/harness/wptrunner/update/base.py69
1 files changed, 69 insertions, 0 deletions
diff --git a/testing/web-platform/harness/wptrunner/update/base.py b/testing/web-platform/harness/wptrunner/update/base.py
new file mode 100644
index 000000000..981ae2b70
--- /dev/null
+++ b/testing/web-platform/harness/wptrunner/update/base.py
@@ -0,0 +1,69 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+exit_unclean = object()
+exit_clean = object()
+
+
+class Step(object):
+ provides = []
+
+ def __init__(self, logger):
+ self.logger = logger
+
+ def run(self, step_index, state):
+ """Base class for state-creating steps.
+
+ When a Step is run() the current state is checked to see
+ if the state from this step has already been created. If it
+ has the restore() method is invoked. Otherwise the create()
+ method is invoked with the state object. This is expected to
+ add items with all the keys in __class__.provides to the state
+ object.
+ """
+
+ name = self.__class__.__name__
+
+ try:
+ stored_step = state.steps[step_index]
+ except IndexError:
+ stored_step = None
+
+ if stored_step == name:
+ self.restore(state)
+ elif stored_step is None:
+ self.create(state)
+ assert set(self.provides).issubset(set(state.keys()))
+ state.steps = state.steps + [name]
+ else:
+ raise ValueError("Expected a %s step, got a %s step" % (name, stored_step))
+
+ def create(self, data):
+ raise NotImplementedError
+
+ def restore(self, state):
+ self.logger.debug("Step %s using stored state" % (self.__class__.__name__,))
+ for key in self.provides:
+ assert key in state
+
+
+class StepRunner(object):
+ steps = []
+
+ def __init__(self, logger, state):
+ """Class that runs a specified series of Steps with a common State"""
+ self.state = state
+ self.logger = logger
+ if "steps" not in state:
+ state.steps = []
+
+ def run(self):
+ rv = None
+ for step_index, step in enumerate(self.steps):
+ self.logger.debug("Starting step %s" % step.__name__)
+ rv = step(self.logger).run(step_index, self.state)
+ if rv in (exit_clean, exit_unclean):
+ break
+
+ return rv