add normalizer for NOAA marine heatwaves

Author: aperrin66

metanorm/normalizers/geospaas/marine_heatwaves.py

@@ -0,0 +1,63 @@
+"""Normalizer for the metadata of ESA CCI datasets"""
+
+import re
+from datetime import datetime
+
+from dateutil.tz import tzutc
+from dateutil.relativedelta import relativedelta
+
+import metanorm.utils as utils
+from .base import GeoSPaaSMetadataNormalizer
+
+
+class MarineHeatWavesMetadataNormalizer(GeoSPaaSMetadataNormalizer):
+    """Generate the properties of a GeoSPaaS Dataset for a NOAA marine
+    heatwaves dataset
+    """
+
+    def check(self, raw_metadata):
+        """Checks that the URL starts with the right prefix"""
+        return raw_metadata.get('url', '').startswith(
+            'https://www.star.nesdis.noaa.gov/pub/socd/mecb/crw/data/marine_heatwave/'
+            'v1.0.1/category/nc')
+
+    def get_entry_title(self, raw_metadata):
+        return 'NOAA marine heatwaves'
+
+    @utils.raises((KeyError, AttributeError))
+    def get_entry_id(self, raw_metadata):
+        return utils.NC_H5_FILENAME_MATCHER.search(raw_metadata['url']).group(1)
+
+    def get_summary(self, raw_metadata):
+        return ''
+
+    time_patterns = (
+        (
+            re.compile(r'/noaa-crw_mhw.*' + utils.YEARMONTHDAY_REGEX + r'\.nc$'),
+            utils.create_datetime,
+            lambda time: (time, time + relativedelta(days=1))
+        ),
+    )
+
+    @utils.raises(KeyError)
+    def get_time_coverage_start(self, raw_metadata):
+        return utils.find_time_coverage(self.time_patterns, raw_metadata['url'])[0]
+
+    @utils.raises(KeyError)
+    def get_time_coverage_end(self, raw_metadata):
+        return utils.find_time_coverage(self.time_patterns, raw_metadata['url'])[1]
+
+    def get_platform(self, raw_metadata):
+        return utils.get_gcmd_platform('Earth Observation Satellites')
+
+    def get_instrument(self, raw_metadata):
+        return utils.get_gcmd_instrument('Imaging Spectrometers/Radiometers')
+
+    def get_location_geometry(self, raw_metadata):
+        return utils.WORLD_WIDE_COVERAGE_WKT
+
+    def get_provider(self, raw_metadata):
+        return utils.get_gcmd_provider(['DOC/NOAA'])
+
+    def get_dataset_parameters(self, raw_metadata):
+        return []