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mirror of https://github.com/ilri/dspace-statistics-api.git synced 2024-06-29 01:23:45 +02:00
dspace-statistics-api/dspace_statistics_api/util.py
Alan Orth 73c71fa8a0
dspace_statistics_api: Add support for date ranges to /items
You can now POST a JSON request to /items with a list of items and
a date range. This allows the possibility to get view and download
statistics for arbitrary items and arbitrary date ranges.

The JSON request should be in the following format:

    {
        "limit": 100,
        "page": 0,
        "dateFrom": "2020-01-01T00:00:00Z",
        "dateTo": "2020-09-09T00:00:00Z",
        "items": [
            "f44cf173-2344-4eb2-8f00-ee55df32c76f",
            "2324aa41-e9de-4a2b-bc36-16241464683e",
            "8542f9da-9ce1-4614-abf4-f2e3fdb4b305",
            "0fe573e7-042a-4240-a4d9-753b61233908"
        ]
    }

The limit, page, and date parameters are all optional. By default
it will use a limit of 100, page 0, and [* TO *] Solr date range.
2020-09-25 12:21:11 +03:00

71 lines
2.4 KiB
Python

def get_statistics_shards():
"""Enumerate the cores in Solr to determine if statistics have been sharded into
yearly shards by DSpace's stats-util or not (for example: statistics-2018).
Returns:
str:A list of Solr statistics shards separated by commas.
"""
from .config import SOLR_SERVER
import re
import requests
# Initialize an empty list for statistics core years
statistics_core_years = []
# URL for Solr status to check active cores
solr_query_params = {"action": "STATUS", "wt": "json"}
solr_url = SOLR_SERVER + "/admin/cores"
res = requests.get(solr_url, params=solr_query_params)
if res.status_code == requests.codes.ok:
data = res.json()
# Iterate over active cores from Solr's STATUS response (cores are in
# the status array of this response).
for core in data["status"]:
# Pattern to match, for example: statistics-2018
pattern = re.compile("^statistics-[0-9]{4}$")
if not pattern.match(core):
continue
# Append current core to list
statistics_core_years.append(core)
# Initialize a string to hold our shards (may end up being empty if the Solr
# core has not been processed by stats-util).
shards = str()
if len(statistics_core_years) > 0:
# Begin building a string of shards starting with the default one
shards = f"{SOLR_SERVER}/statistics"
for core in statistics_core_years:
# Create a comma-separated list of shards to pass to our Solr query
#
# See: https://wiki.apache.org/solr/DistributedSearch
shards += f",{SOLR_SERVER}/{core}"
# Return the string of shards, which may actually be empty. Solr doesn't
# seem to mind if the shards query parameter is empty and I haven't seen
# any negative performance impact so this should be fine.
return shards
def is_valid_date(date):
import datetime
import falcon
try:
# Solr date format is: 2020-01-01T00:00:00Z
# See: https://docs.python.org/3/library/datetime.html#strftime-strptime-behavior
datetime.datetime.strptime(date, "%Y-%m-%dT%H:%M:%SZ")
return True
except ValueError:
raise falcon.HTTPBadRequest(
title="Invalid parameter",
description=f"Invalid date format: {date}. The value must be in format: 2020-01-01T00:00:00Z.",
)