feat/opm_pipeline_plugin

padacioso/opm.py

@@ -0,0 +1,293 @@
+"""Intent service wrapping padacioso."""
+
+from functools import lru_cache
+from os.path import isfile
+from typing import List, Optional
+
+from ovos_bus_client.message import Message
+from ovos_bus_client.session import SessionManager, Session
+from ovos_config.config import Configuration
+from ovos_plugin_manager.templates.pipeline import PipelinePlugin, IntentMatch
+from ovos_utils import flatten_list
+from ovos_utils.log import LOG
+
+from padacioso import IntentContainer as FallbackIntentContainer
+
+
+class PadaciosoIntent:
+    """
+    A set of data describing how a query fits into an intent
+    Attributes:
+        name (str): Name of matched intent
+        sent (str): The input utterance associated with the intent
+        conf (float): Confidence (from 0.0 to 1.0)
+        matches (dict of str -> str): Key is the name of the entity and
+            value is the extracted part of the sentence
+    """
+
+    def __init__(self, name, sent, matches=None, conf=0.0):
+        self.name = name
+        self.sent = sent
+        self.matches = matches or {}
+        self.conf = conf
+
+    def __getitem__(self, item):
+        return self.matches.__getitem__(item)
+
+    def __contains__(self, item):
+        return self.matches.__contains__(item)
+
+    def get(self, key, default=None):
+        return self.matches.get(key, default)
+
+    def __repr__(self):
+        return repr(self.__dict__)
+
+
+class PadaciosoPipeline(PipelinePlugin):
+    """Service class for padacioso intent matching."""
+
+    def __init__(self, bus, config):
+        super().__init__(config)
+        self.padacioso_config = config
+        self.bus = bus
+
+        core_config = Configuration()
+        self.lang = core_config.get("lang", "en-us")
+        langs = core_config.get('secondary_langs') or []
+        if self.lang not in langs:
+            langs.append(self.lang)
+
+        self.conf_high = self.padacioso_config.get("conf_high") or 0.95
+        self.conf_med = self.padacioso_config.get("conf_med") or 0.8
+        self.conf_low = self.padacioso_config.get("conf_low") or 0.5
+        self.workers = self.padacioso_config.get("workers") or 4
+
+        self.containers = {lang: FallbackIntentContainer(
+            self.padacioso_config.get("fuzz"), n_workers=self.workers)
+            for lang in langs}
+
+        self.bus.on('padatious:register_intent', self.register_intent)
+        self.bus.on('padatious:register_entity', self.register_entity)
+        self.bus.on('detach_intent', self.handle_detach_intent)
+        self.bus.on('detach_skill', self.handle_detach_skill)
+
+        self.registered_intents = []
+        self.registered_entities = []
+        self.max_words = 50  # if an utterance contains more words than this, don't attempt to match
+        LOG.debug('Loaded Padacioso intent parser.')
+
+    def _match_level(self, utterances, limit, lang=None,
+                     message: Optional[Message] = None) -> Optional[IntentMatch]:
+        """Match intent and make sure a certain level of confidence is reached.
+
+        Args:
+            utterances (list of tuples): Utterances to parse, originals paired
+                                         with optional normalized version.
+            limit (float): required confidence level.
+        """
+        LOG.debug(f'Padacioso Matching confidence > {limit}')
+        # call flatten in case someone is sending the old style list of tuples
+        utterances = flatten_list(utterances)
+        lang = lang or self.lang
+        padacioso_intent = self.calc_intent(utterances, lang, message)
+        if padacioso_intent is not None and padacioso_intent.conf > limit:
+            skill_id = padacioso_intent.name.split(':')[0]
+            return IntentMatch(
+                'Padacioso', padacioso_intent.name,
+                padacioso_intent.matches, skill_id, padacioso_intent.sent)
+
+    def match_high(self, utterances, lang=None, message=None) -> Optional[IntentMatch]:
+        """Intent matcher for high confidence.
+
+        Args:
+            utterances (list of tuples): Utterances to parse, originals paired
+                                         with optional normalized version.
+        """
+        return self._match_level(utterances, self.conf_high, lang, message)
+
+    def match_medium(self, utterances, lang=None, message=None) -> Optional[IntentMatch]:
+        """Intent matcher for medium confidence.
+
+        Args:
+            utterances (list of tuples): Utterances to parse, originals paired
+                                         with optional normalized version.
+        """
+        return self._match_level(utterances, self.conf_med, lang, message)
+
+    def match_low(self, utterances, lang=None, message=None) -> Optional[IntentMatch]:
+        """Intent matcher for low confidence.
+
+        Args:
+            utterances (list of tuples): Utterances to parse, originals paired
+                                         with optional normalized version.
+        """
+        return self._match_level(utterances, self.conf_low, lang, message)
+
+    def __detach_intent(self, intent_name):
+        """ Remove an intent if it has been registered.
+
+        Args:
+            intent_name (str): intent identifier
+        """
+        if intent_name in self.registered_intents:
+            self.registered_intents.remove(intent_name)
+            for lang in self.containers:
+                self.containers[lang].remove_intent(intent_name)
+
+    def handle_detach_intent(self, message):
+        """Messagebus handler for detaching padacioso intent.
+
+        Args:
+            message (Message): message triggering action
+        """
+        self.__detach_intent(message.data.get('intent_name'))
+
+    def __detach_entity(self, name, lang):
+        """ Remove an entity.
+
+        Args:
+            entity name
+            entity lang
+        """
+        if lang in self.containers:
+            self.containers[lang].remove_entity(name)
+
+    def handle_detach_skill(self, message):
+        """Messagebus handler for detaching all intents for skill.
+
+        Args:
+            message (Message): message triggering action
+        """
+        skill_id = message.data['skill_id']
+        remove_list = [i for i in self.registered_intents if skill_id in i]
+        for i in remove_list:
+            self.__detach_intent(i)
+        skill_id_colon = skill_id + ":"
+        for en in self.registered_entities:
+            if en["name"].startswith(skill_id_colon):
+                self.__detach_entity(en["name"], en["lang"])
+
+    def _register_object(self, message, object_name, register_func):
+        """Generic method for registering a padacioso object.
+
+        Args:
+            message (Message): trigger for action
+            object_name (str): type of entry to register
+            register_func (callable): function to call for registration
+        """
+        file_name = message.data.get('file_name')
+        samples = message.data.get("samples")
+        name = message.data['name']
+
+        LOG.debug('Registering Padacioso ' + object_name + ': ' + name)
+
+        if (not file_name or not isfile(file_name)) and not samples:
+            LOG.error('Could not find file ' + file_name)
+            return
+
+        if not samples and isfile(file_name):
+            with open(file_name) as f:
+                samples = [line.strip() for line in f.readlines()]
+
+        register_func(name, samples)
+
+    def register_intent(self, message):
+        """Messagebus handler for registering intents.
+
+        Args:
+            message (Message): message triggering action
+        """
+        lang = message.data.get('lang', self.lang)
+        lang = lang.lower()
+        if lang in self.containers:
+            self.registered_intents.append(message.data['name'])
+            try:
+                self._register_object(message, 'intent',
+                                      self.containers[lang].add_intent)
+            except RuntimeError:
+                name = message.data.get('name', "")
+                # padacioso fails on reloading a skill, just ignore
+                if name not in self.containers[lang].intent_samples:
+                    raise
+
+    def register_entity(self, message):
+        """Messagebus handler for registering entities.
+
+        Args:
+            message (Message): message triggering action
+        """
+        lang = message.data.get('lang', self.lang)
+        lang = lang.lower()
+        if lang in self.containers:
+            self.registered_entities.append(message.data)
+            self._register_object(message, 'entity',
+                                  self.containers[lang].add_entity)
+
+    def calc_intent(self, utterances: List[str], lang: str = None,
+                    message: Optional[Message] = None) -> Optional[PadaciosoIntent]:
+        """
+        Get the best intent match for the given list of utterances. Utilizes a
+        thread pool for overall faster execution. Note that this method is NOT
+        compatible with Padacioso, but is compatible with Padacioso.
+        @param utterances: list of string utterances to get an intent for
+        @param lang: language of utterances
+        @return:
+        """
+        if isinstance(utterances, str):
+            utterances = [utterances]  # backwards compat when arg was a single string
+        utterances = [u for u in utterances if len(u.split()) < self.max_words]
+        if not utterances:
+            LOG.error(f"utterance exceeds max size of {self.max_words} words, skipping padacioso match")
+            return None
+
+        lang = lang or self.lang
+        lang = lang.lower()
+        sess = SessionManager.get(message)
+        if lang in self.containers:
+            intent_container = self.containers.get(lang)
+            intents = [_calc_padacioso_intent(utt, intent_container, sess)
+                       for utt in utterances]
+            intents = [i for i in intents if i is not None]
+            # select best
+            if intents:
+                return max(intents, key=lambda k: k.conf)
+
+    def shutdown(self):
+        self.bus.remove('padatious:register_intent', self.register_intent)
+        self.bus.remove('padatious:register_entity', self.register_entity)
+        self.bus.remove('detach_intent', self.handle_detach_intent)
+        self.bus.remove('detach_skill', self.handle_detach_skill)
+
+
+@lru_cache(maxsize=3)  # repeat calls under different conf levels wont re-run code
+def _calc_padacioso_intent(utt: str,
+                           intent_container: FallbackIntentContainer,
+                           sess: Session) -> \
+        Optional[PadaciosoIntent]:
+    """
+    Try to match an utterance to an intent in an intent_container
+    @param args: tuple of (utterance, IntentContainer)
+    @return: matched PadaciosoIntent
+    """
+    try:
+        intents = [i for i in intent_container.calc_intents(utt)
+                   if i is not None
+                   and i["name"] not in sess.blacklisted_intents
+                   and i["name"].split(":")[0] not in sess.blacklisted_skills]
+        if len(intents) == 0:
+            return None
+        best_conf = max(x.get("conf", 0) for x in intents if x.get("name"))
+        ties = [i for i in intents if i.get("conf", 0) == best_conf]
+        if not ties:
+            return None
+        # TODO - how to disambiguate ?
+        intent = ties[0]
+        if "entities" in intent:
+            intent["matches"] = intent.pop("entities")
+        intent["sent"] = utt
+        intent = PadaciosoIntent(**intent)
+        intent.sent = utt
+        return intent
+    except Exception as e:
+        LOG.error(e)

setup.py

@@ -46,6 +46,10 @@ def required(requirements_file):
         return [pkg for pkg in requirements
                 if pkg.strip() and not pkg.startswith("#")]
 
+
+PLUGIN_ENTRY_POINT = 'ovos-padacioso-pipeline-plugin=ovos_padacioso.opm:PadaciosoPipeline'
+
+
 setup(
     name='padacioso',
     version=get_version(),
@@ -56,5 +60,6 @@ def required(requirements_file):
     author='jarbasai',
     author_email='[email protected]',
     install_requires=required("requirements.txt"),
+    entry_points={'opm.pipeline': PLUGIN_ENTRY_POINT},
     description='dead simple intent parser'
 )