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from plugin.api.core.exceptions import ApiError |
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from plugin.preferences import Preferences |
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from threading import Lock |
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import logging |
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log = logging.getLogger(__name__) |
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class ApiContext(object): |
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def __init__(self, method, headers, body): |
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self.method = method |
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self.headers = headers |
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self.body = body |
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# Validate token |
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self.token = self._validate_token() |
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def _validate_token(self): |
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token = self.headers.get('X-Channel-Token') if self.headers else None |
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if not token: |
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return None |
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# Validate `token` |
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system = ApiManager.get_service('system') |
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try: |
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return system.validate(token) |
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except: |
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return None |
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class ApiManager(object): |
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service_classes = {} |
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services = {} |
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# Call attributes |
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lock = Lock() |
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context = None |
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@classmethod |
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def process(cls, method, headers, body, key, *args, **kwargs): |
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log.debug('Handling API %s request %r - args: %r, kwargs: %r', method, key, args, kwargs) |
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if not Preferences.get('api.enabled'): |
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log.debug('Unable to process request, API is currently disabled') |
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return cls.build_error('disabled', 'Unable to process request, API is currently disabled') |
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k_service, k_method = key.rsplit('.', 1) |
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# Try find matching service |
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service = cls.get_service(k_service) |
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if service is None: |
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log.warn('Unable to find service: %r', k_service) |
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return cls.build_error('unknown.service', 'Unable to find service: %r' % k_service) |
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func = getattr(service, k_method, None) |
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if func is None: |
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log.warn('Unable to find method: %r', k_method) |
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return cls.build_error('unknown.method', 'Unable to find method: %r' % k_method) |
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# Validate |
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meta = getattr(func, '__meta__', {}) |
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if not meta.get('exposed', False): |
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log.warn('Method is not exposed: %r', k_method) |
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return cls.build_error('restricted.method', 'Method is not exposed: %r' % k_method) |
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# TODO validate authentication |
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# Execute request handler |
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try: |
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result = cls.call(method, headers, body, func, args, kwargs) |
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except ApiError, ex: |
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log.warn('Error returned while handling request %r: %r', key, ex, exc_info=True) |
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return cls.build_error('error.%s' % ex.code, ex.message) |
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except Exception, ex: |
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log.error('Exception raised while handling request %r: %s', key, ex, exc_info=True) |
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return cls.build_error('exception', 'Exception raised while handling the request') |
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# Build response |
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return cls.build_response(result) |
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@classmethod |
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def call(cls, method, headers, body, func, args, kwargs): |
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with cls.lock: |
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# Construct context |
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cls.context = ApiContext(method, headers, body) |
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# Call function |
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return func(*args, **kwargs) |
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@classmethod |
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def register(cls, service): |
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key = service.__key__ |
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if not key: |
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log.warn('Service %r has an invalid "__key__" attribute', service) |
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return |
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cls.service_classes[key] = service |
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log.debug('Registered service: %r (%r)', key, service) |
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@classmethod |
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def get_service(cls, key): |
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if key in cls.services: |
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# Service already constructed |
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return cls.services[key] |
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if key not in cls.service_classes: |
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# Service doesn't exist |
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return None |
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118
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# Construct service |
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cls.services[key] = cls.service_classes[key](cls) |
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121
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return cls.services[key] |
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123
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@classmethod |
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def build_error(cls, code, message=None): |
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result = { |
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'error': { |
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'code': code |
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} |
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} |
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131
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if message: |
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result['error']['message'] = message |
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134
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return result |
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136
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@classmethod |
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def build_response(cls, result): |
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return { |
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'result': result |
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} |
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fuzeman /
Plex-Trakt-Scrobbler
