Merge pull request #7 from mn5hk/add-swords

Add swords

geoslurp_userplugins/__init__.py

@@ -31,3 +31,4 @@
 from .sebs import *
 from .gleam import *
 from .imerg import *
+from .sword import *

geoslurp_userplugins/sword.py

@@ -0,0 +1,79 @@
+# This file is part of geoslurp.
+# geoslurp is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 3 of the License, or (at your option) any later version.
+
+# geoslurp is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with geoslurp; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+# Author Roelof Rietbroek ([email protected]), 2023
+# Author Amin Shakya ([email protected]), 2023
+
+from geoslurp.dataset.OGRBase import OGRBase
+from geoslurp.datapull.http import Uri as http
+from geoslurp.config.catalogue import geoslurpCatalogue
+from datetime import datetime
+import json
+from zipfile import ZipFile
+import os
+import tempfile
+import yaml
+
+class SwordBase(OGRBase):
+    """
+    Base class for SWORD: the SWOT River Database, Version 15. If you would like more information about SWORD, please see the paper published in Water Resources Research in 2021, led by Elizabeth Altenau. You can access it here: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021WR030054
+    """
+    url='http://gaia.geosci.unc.edu/SWORD/SWORD_v15_gpkg.zip'
+    path="SWORD_v15_gpkg.zip"
+    scheme='globalgis'
+    version=(0,0,0)
+    cont=None
+    swordtype=None
+
+    def __init__(self,dbconn):
+        super().__init__(dbconn)
+        self.ogrfile=os.path.join(self.cacheDir(),os.path.basename(self.path))
+        self.gtype='GEOMETRY'
+        self.setCacheDir(os.path.join(self.conf.getCacheDir(scheme=self.scheme),'SwordBase'))
+        self.ogrfile=self.getogrfile()
+
+
+    def pull(self):
+        """Pulls the geojson data from the url and unpacks it in the cache directory"""
+        uri=http(self.url,lastmod=datetime(2023,6,28))
+        uri.download(direc=self.cacheDir(),outfile=self.path,check=True)               
+        path_to_zip_file = os.path.join(self.cacheDir(), self.path)
+        with ZipFile(path_to_zip_file, 'r') as zip_ref:
+            zip_ref.extractall(self.cacheDir())
+
+    def getogrfile(self):
+        return os.path.join(self.cacheDir("gpkg"),self.cont+"_sword_"+self.swordtype+"_v15.gpkg")
+
+def SwordClassFactory(clsName,val):
+    return type(clsName, (SwordBase,), {"cont":val["cont"], "swordtype":val["swordtype"]})
+
+def getSwordDsets(conf):
+    # Function does not initiate class instances, but only defines class types
+    continents=["eu","af","sa","oc","as"]
+    swordtypes = ["reaches", "nodes"]
+    out=[]
+
+    #create a list of datasets
+    for continent in continents:
+        for swordtype in swordtypes:
+            entry={"cont":continent,"swordtype":swordtype}
+            clsname=continent + "_sword_" + swordtype
+            out.append(SwordClassFactory(clsname,entry))
+
+
+    return out
+
+
+geoslurpCatalogue.addDatasetFactory(getSwordDsets)