Source code for eodag.plugins.crunch.filter_latest_intersect

# -*- coding: utf-8 -*-
# Copyright 2018, CS GROUP - France, https://www.csgroup.eu/
#
# This file is part of EODAG project
#     https://www.github.com/CS-SI/EODAG
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import datetime
import logging
import time

import dateutil.parser
from shapely import geometry

from eodag.plugins.crunch.base import Crunch

logger = logging.getLogger("eodag.plugins.crunch.filter_latest_intersect")


[docs]class FilterLatestIntersect(Crunch): """FilterLatestIntersect cruncher Filter latest products (the ones with a the highest start date) that intersect search extent """ @staticmethod def sort_product_by_start_date(product): """Get product start date""" start_date = product.properties.get("startTimeFromAscendingNode") if not start_date: # Retrieve year, month, day, hour, minute, second of EPOCH start epoch = time.gmtime(0)[:-3] start_date = datetime.datetime(*epoch).isoformat() return dateutil.parser.parse(start_date)
[docs] def proceed(self, products, **search_params): """Execute crunch: Filter latest products (the ones with a the highest start date) that intersect search extent. :param products: A list of products resulting from a search :type products: list(:class:`~eodag.api.product._product.EOProduct`) :param search_params: Search criteria that must contain `geometry` (dict) :type search_params: dict :returns: The filtered products :rtype: list(:class:`~eodag.api.product._product.EOProduct`) """ logger.debug("Start filtering for latest products") if not products: return [] # Warning: May crash if startTimeFromAscendingNode is not in the appropriate format products.sort(key=self.sort_product_by_start_date, reverse=True) filtered = [] add_to_filtered = filtered.append footprint = search_params.get("geometry") if not footprint: logger.warning( "geometry not found in cruncher arguments, filtering disabled." ) return products search_extent = geometry.box( footprint["lonmin"], footprint["latmin"], footprint["lonmax"], footprint["latmax"], ) logger.debug("Initial requested extent area: %s", search_extent.area) for product in products: logger.debug("Uncovered extent area: %s", search_extent.area) if product.search_intersection: logger.debug( "Product %r intersects the requested extent. Adding it to the final result", product, ) add_to_filtered(product) search_extent = search_extent.difference(product.geometry) if search_extent.is_empty: logger.debug( "The requested extent is now entirely covered by the search result" ) break logger.info("Finished filtering products. %s resulting products", len(filtered)) return filtered