mirror of
https://github.com/ilri/dspace-statistics-api.git
synced 2024-06-29 09:33:47 +02:00
Alan Orth
19a45f3f6f
This route exposes all item statistics and uses the limit and offset parameters to control paging throug the result set. The logic here is extremely easy thanks to the brilliant LIMIT and OFFSET features of SQLite (of course the SQL query sorts the results by some unique field to ensure the order is already the same).
69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
# Tested with Python 3.6
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# See DSpace Solr docs for tips about parameters
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# https://wiki.duraspace.org/display/DSPACE/Solr
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from database import database_connection_ro
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import falcon
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from solr import solr_connection
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db = database_connection_ro()
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solr = solr_connection()
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class AllItemsResource:
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def on_get(self, req, resp):
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"""Handles GET requests"""
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# Return HTTPBadRequest if id parameter is not present and valid
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limit = req.get_param_as_int("limit", min=0, max=100) or 100
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page = req.get_param_as_int("page", min=0) or 0
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offset = limit * page
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cursor = db.cursor()
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# get total number of items so we can estimate the pages
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cursor.execute('SELECT COUNT(id) FROM items')
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pages = round(cursor.fetchone()[0] / limit)
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# get statistics, ordered by id, and use limit and offset to page through results
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cursor.execute('SELECT id, views, downloads FROM items ORDER BY id ASC LIMIT {0} OFFSET {1}'.format(limit, offset))
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results = cursor.fetchmany(limit)
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cursor.close()
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# create a list to hold dicts of item stats
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statistics = list()
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# iterate over results and build statistics object
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for item in results:
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statistics.append({ 'id': item['id'], 'views': item['views'], 'downloads': item['downloads'] })
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message = {
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'currentPage': page,
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'totalPages': pages,
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'limit': limit,
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'statistics': statistics
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}
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resp.media = message
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class ItemResource:
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def on_get(self, req, resp, item_id):
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"""Handles GET requests"""
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cursor = db.cursor()
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cursor.execute('SELECT views, downloads FROM items WHERE id={0}'.format(item_id))
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results = cursor.fetchone()
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cursor.close()
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statistics = {
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'id': item_id,
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'views': results['views'],
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'downloads': results['downloads']
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}
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resp.media = statistics
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api = falcon.API()
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api.add_route('/', AllItemsResource())
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api.add_route('/item/{item_id:int}', ItemResource())
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# vim: set sw=4 ts=4 expandtab:
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