Fixes for temporary file locks and windows implementation.

Author: carderm

.gitignore

@@ -1,19 +1,22 @@
-# Compiled python code
-*.pyc
-
-# osx files
-.DS_Store
-
-# sass cache
-.sass-cache
-.elasticbeanstalk
-
-# Distribution
-dist
-django_raster.egg-info
-
-# Docs build
-docs/_build
-
-# Coverage output
-.coverage
+# Compiled python code
+*.pyc
+
+# osx files
+.DS_Store
+
+# sass cache
+.sass-cache
+.elasticbeanstalk
+
+# Distribution
+dist
+django_raster.egg-info
+
+# Docs build
+docs/_build
+
+# Coverage output
+.coverage
+
+.idea/
+.idea

raster/tasks.py

@@ -45,7 +45,10 @@ def create_tiles(rasterlayer_id, zoom, extract_metadata=False):
         raise
     finally:
         if hasattr(parser, 'tmpdir'):
-            shutil.rmtree(parser.tmpdir)
+            tmpdir = parser.tmpdir
+            parser.dataset = None
+            parser = None
+            shutil.rmtree(tmpdir)
 
 
 @task

raster/tiles/parser.py

@@ -201,19 +201,23 @@ def reproject_rasterfile(self):
 
         # Compress reprojected raster file and store it
         if self.rasterlayer.store_reprojected:
-            with tempfile.NamedTemporaryFile(dir=self.tmpdir, suffix='.zip') as dest:
-                with zipfile.ZipFile(dest.name, 'w', allowZip64=True) as dest_zip:
-                    dest_zip.write(
-                        filename=self.dataset.name,
-                        arcname=os.path.basename(self.dataset.name),
-                        compress_type=zipfile.ZIP_DEFLATED,
-                    )
-                # Store zip file in reprojected raster model
-                self.rasterlayer.reprojected.rasterfile = File(
-                    open(dest.name, 'rb'),
-                    name=os.path.basename(dest_zip.filename)
-                )
-                self.rasterlayer.reprojected.save()
+            dest = tempfile.NamedTemporaryFile(dir=self.tmpdir, suffix='.zip', delete=False)
+            dest.close()
+            dest_zip = zipfile.ZipFile(dest.name, 'w', allowZip64=True)
+            dest_zip.write(
+                filename=self.dataset.name,
+                arcname=os.path.basename(self.dataset.name),
+                compress_type=zipfile.ZIP_DEFLATED,
+            )
+            dest_zip.close()
+            # Store zip file in reprojected raster model
+            self.rasterlayer.reprojected.rasterfile = File(
+                open(dest.name, 'rb'),
+                name=os.path.basename(dest_zip.filename)
+            )
+            self.rasterlayer.reprojected.save()
+            # Remove tmp file
+            os.unlink(dest.name)
 
         self.log('Finished transforming raster.')
 
@@ -408,7 +412,7 @@ def process_quadrant(self, indexrange, zoom):
             RasterTile.objects.bulk_create(batch)
 
         # Remove quadrant raster tempfile.
-        os.remove(dest_file_name)
+        # os.remove(dest_file_name)
 
     def push_histogram(self, data):
         """