Xarray: add support for multi-file dataset (#1233)

* Xarray: add support for multi-file dataset

* fix flake8

* test

.github/workflows/main.yml

@@ -95,6 +95,7 @@ jobs:
         python3 setup.py install
         pip3 install --upgrade numpy elasticsearch
         pip3 install --upgrade numpy "sqlalchemy<2"
+        pip3 install --upgrade flake8
         pip3 install --global-option=build_ext --global-option="-I/usr/include/gdal" GDAL==`gdal-config --version`
         #pip3 install --upgrade rasterio==1.1.8
     - name: setup test data ⚙️

pygeoapi/provider/xarray_.py

@@ -62,7 +62,12 @@ class XarrayProvider(BaseProvider):
             if provider_def['data'].endswith('.zarr'):
                 open_func = xarray.open_zarr
             else:
-                open_func = xarray.open_dataset
+                if '*' in self.data:
+                    LOGGER.debug('Detected multi file dataset')
+                    open_func = xarray.open_mfdataset
+                else:
+                    open_func = xarray.open_dataset
+
             self._data = open_func(self.data)
             self._data = _convert_float32_to_float64(self._data)
             self._coverage_properties = self._get_coverage_properties()