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"""Definitions for REST API operations. These are wired via Connexion to |
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methods defined in the Swagger specification.""" |
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import connexion |
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import annif.project |
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from annif.corpus import Document, DocumentList |
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from annif.suggestion import SuggestionFilter |
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from annif.exception import AnnifException |
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from annif.project import Access |
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def project_not_found_error(project_id): |
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"""return a Connexion error object when a project is not found""" |
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return connexion.problem( |
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status=404, |
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title='Project not found', |
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detail="Project '{}' not found".format(project_id)) |
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def server_error(err): |
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"""return a Connexion error object when there is a server error (project |
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or backend problem)""" |
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return connexion.problem( |
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status=503, |
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title='Service unavailable', |
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detail=err.format_message()) |
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def list_projects(): |
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"""return a dict with projects formatted according to Swagger spec""" |
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return { |
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'projects': [ |
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proj.dump() for proj in annif.project.get_projects( |
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min_access=Access.public).values()]} |
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def show_project(project_id): |
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"""return a single project formatted according to Swagger spec""" |
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try: |
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project = annif.project.get_project( |
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project_id, min_access=Access.hidden) |
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except ValueError: |
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return project_not_found_error(project_id) |
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return project.dump() |
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def suggest(project_id, text, limit, threshold): |
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"""suggest subjects for the given text and return a dict with results |
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formatted according to Swagger spec""" |
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try: |
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project = annif.project.get_project( |
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project_id, min_access=Access.hidden) |
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except ValueError: |
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return project_not_found_error(project_id) |
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hit_filter = SuggestionFilter(limit, threshold) |
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try: |
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result = project.suggest(text) |
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except AnnifException as err: |
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return server_error(err) |
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hits = hit_filter(result) |
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return {'results': [hit._asdict() for hit in hits]} |
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def _documents_to_corpus(documents): |
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corpus = [Document(text=d['text'], |
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uris=[subj['uri'] for subj in d['subjects']], |
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labels=[subj['label'] for subj in d['subjects']]) |
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for d in documents |
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if 'text' in d and 'subjects' in d] |
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return DocumentList(corpus) |
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def learn(project_id, documents): |
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"""learn from documents and return an empty 204 response if succesful""" |
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try: |
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project = annif.project.get_project( |
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project_id, min_access=Access.hidden) |
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except ValueError: |
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return project_not_found_error(project_id) |
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corpus = _documents_to_corpus(documents) |
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try: |
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project.learn(corpus) |
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except AnnifException as err: |
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return server_error(err) |
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return None, 204 |
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NatLibFi /
Annif
