from resources.libraries.python.Constants import Constants
+
def _str(text):
- """Convert from possible unicode without interpreting as number.
+ """Convert from possible bytes without interpreting as number.
:param text: Input to convert.
:type text: str or unicode
:returns: Converted text.
:rtype: str
"""
- return text.encode("utf-8") if isinstance(text, unicode) else text
+ return text.decode(u"utf-8") if isinstance(text, bytes) else text
-class VppApiCrcChecker(object):
+class VppApiCrcChecker:
"""Holder of data related to tracking VPP API CRCs.
Both message names and crc hexa strings are tracked as
- ordinary Python2 (bytes) str, so _str() is used when input is
- possibly unicode or otherwise not safe.
+ ordinary Python3 (unicode) string, so _str() is used when input is
+ possibly bytes or otherwise not safe.
Each instance of this class starts with same default state,
so make sure the calling libraries have appropriate robot library scope.
self._expected = dict()
"""Mapping from collection name to mapping from API name to CRC string.
- Colection name should be something useful for logging.
+ Collection name should be something useful for logging.
- Order of addition reflects the order colections should be queried.
+ Order of addition reflects the order collections should be queried.
If an incompatible CRC is found, affected collections are removed.
A CRC that would remove all does not, added to _reported instead,
- while causing a failure in single test."""
+ while causing a failure in single test (if fail_on_mismatch)."""
self._missing = dict()
"""Mapping from collection name to mapping from API name to CRC string.
Starts the same as _expected, but each time an encountered api,crc pair
- fits the expectation, the pair is removed from this mapping.
- Ideally, the active mappings will become empty.
+ fits the expectation, the pair is removed from all collections
+ within this mapping. Ideally, the active mappings will become empty.
If not, it is an error, VPP removed or renamed a message CSIT needs."""
self._found = dict()
"""Log to console, on fail_on_mismatch also raise runtime exception.
:param exc_msg: The message to include in log or exception.
- :type exception: str
+ :type exc_msg: str
:raises RuntimeError: With the message, if fail_on_mismatch.
"""
logger.console("RuntimeError:\n{m}".format(m=exc_msg))
:param name_to_crc_mapping: Mapping from API names to CRCs.
:type collection_name: str or unicode
:type name_to_crc_mapping: dict from str/unicode to str/unicode
+ :raises RuntimeError: If the name of a collection is registered already.
"""
collection_name = _str(collection_name)
if collection_name in self._expected:
- raise RuntimeError("Collection {cl!r} already registered.".format(
- cl=collection_name))
+ raise RuntimeError(
+ f"Collection {collection_name!r} already registered."
+ )
mapping = {_str(k): _str(v) for k, v in name_to_crc_mapping.items()}
self._expected[collection_name] = mapping
self._missing[collection_name] = mapping.copy()
"""Add all collections this CSIT codebase is tested against."""
file_path = os.path.normpath(os.path.join(
- os.path.dirname(os.path.abspath(__file__)), "..", "..",
- "api", "vpp", "supported_crcs.yaml"))
+ os.path.dirname(os.path.abspath(__file__)), u"..", u"..",
+ u"api", u"vpp", u"supported_crcs.yaml"))
with open(file_path, "r") as file_in:
- collections_dict = yaml.load(file_in.read())
+ collections_dict = yaml.safe_load(file_in.read())
for collection_name, name_to_crc_mapping in collections_dict.items():
self._register_collection(collection_name, name_to_crc_mapping)
if isinstance(item, (dict, list)):
continue
return _str(item)
- raise RuntimeError("No name found for message: {obj!r}".format(
- obj=msg_obj))
+ raise RuntimeError(f"No name found for message: {msg_obj!r}")
@staticmethod
def _get_crc(msg_obj):
for item in reversed(msg_obj):
if not isinstance(item, dict):
continue
- crc = item.get("crc", None)
+ crc = item.get(u"crc", None)
if crc:
return _str(crc)
- raise RuntimeError("No CRC found for message: {obj!r}".format(
- obj=msg_obj))
+ raise RuntimeError(f"No CRC found for message: {msg_obj!r}")
def _process_crc(self, api_name, crc):
"""Compare API to verified collections, update class state.
+ Here, API stands for (message name, CRC) pair.
+
Conflict is NOT when a collection does not recognize the API.
Such APIs are merely added to _found for later reporting.
Conflict is when a collection recognizes the API under a different CRC.
self._expected = new_expected
self._missing = {name: self._missing[name] for name in new_expected}
return
- # No new_expected means some colections knew the api_name,
+ # No new_expected means some collections knew the api_name,
# but CRC does not match any. This has to be reported.
self._reported[api_name] = crc
"""Parse every .api.json found under directory, remember conflicts.
As several collections are supported, each conflict invalidates
- one of them, failure happens only when no collections would be left.
+ some of them, failure happens only when no collections would be left.
In that case, set of collections just before the failure is preserved,
the _reported mapping is filled with conflicting APIs.
The _found mapping is filled with discovered api names and crcs.
"""
for root, _, files in os.walk(directory):
for filename in files:
- if not filename.endswith(".api.json"):
+ if not filename.endswith(u".api.json"):
continue
- with open(root + '/' + filename, "r") as file_in:
+ with open(f"{root}/{filename}", "r") as file_in:
json_obj = json.load(file_in)
- msgs = json_obj["messages"]
+ msgs = json_obj[u"messages"]
for msg_obj in msgs:
msg_name = self._get_name(msg_obj)
msg_crc = self._get_crc(msg_obj)
self._process_crc(msg_name, msg_crc)
- logger.debug("Surviving collections: {col!r}".format(
- col=self._expected.keys()))
+ logger.debug(f"Surviving collections: {self._expected.keys()!r}")
def report_initial_conflicts(self, report_missing=False):
"""Report issues discovered by _check_dir, if not done that already.
Missing reporting is disabled by default, because some messages
come from plugins that might not be enabled at runtime.
+ After the report, clear _reported, so that test cases report them again,
+ thus tracking which message is actually used (by which test).
+
:param report_missing: Whether to raise on missing messages.
:type report_missing: bool
:raises RuntimeError: If CRC mismatch or missing messages are detected,
self._initial_conflicts_reported = True
if self._reported:
reported_indented = json.dumps(
- self._reported, indent=1, sort_keys=True, separators=[",", ":"])
+ self._reported, indent=1, sort_keys=True,
+ separators=[u",", u":"]
+ )
+ self._reported = dict()
self.log_and_raise(
- "Dir check found incompatible API CRCs:\n{ri}".format(
- ri=reported_indented))
+ f"Incompatible API CRCs found in .api.json files:\n"
+ f"{reported_indented}"
+ )
if not report_missing:
return
missing = {name: mapp for name, mapp in self._missing.items() if mapp}
if missing:
missing_indented = json.dumps(
- missing, indent=1, sort_keys=True, separators=[",", ":"])
- self.log_and_raise("Dir check found missing API CRCs:\n{mi}".format(
- mi=missing_indented))
+ missing, indent=1, sort_keys=True, separators=[u",", u":"])
+ self.log_and_raise(
+ f"API CRCs missing from .api.json:\n{missing_indented}"
+ )
def check_api_name(self, api_name):
- """Fail if the api_name has no known CRC associated.
+ """Fail if the api_name has no, or different from known CRC associated.
Do not fail if this particular failure has been already reported.
- Intended use: Call everytime an API call is queued or response received.
+ Intended use: Call during test (not in initialization),
+ every time an API call is queued or response received.
- :param api_name: VPP API messagee name to check.
+ :param api_name: VPP API message name to check.
:type api_name: str or unicode
:raises RuntimeError: If no verified CRC for the api_name is found.
"""
if new_expected:
# Some collections recognized the message name.
self._expected = new_expected
- return
crc = self._found.get(api_name, None)
+ matching = False
+ if crc is not None:
+ # Regardless of how many collections are remaining,
+ # verify the known CRC is on one of them.
+ for name_to_crc_mapping in self._expected.values():
+ if api_name not in name_to_crc_mapping:
+ continue
+ if name_to_crc_mapping[api_name] == crc:
+ matching = True
+ break
+ if matching:
+ return
self._reported[api_name] = crc
- self.log_and_raise("No active collection has API {api!r}"
- " CRC found {crc!r}".format(api=api_name, crc=crc))
+ self.log_and_raise(
+ f"No active collection contains API {api_name!r} with CRC {crc!r}"
+ )