Fixes/#344 set osmosis temp dir

AUTHORS.rst

@@ -2,4 +2,4 @@
 Authors
 =======
 
-* Guido Pleßmann, Ilka Cußman, Stephan Günther - https://github.com/openego/eGon-data
+* Guido Pleßmann, Ilka Cußman, Stephan Günther, Jonathan Amme - https://github.com/openego/eGon-data

CHANGELOG.rst

@@ -192,3 +192,5 @@ Bug fixes
   `#258 <https://github.com/openego/eGon-data/issues/258>`_
 * Fix conflicting docker containers by setting a project name
   `#289 <https://github.com/openego/eGon-data/issues/289>`_
+* Set current working directory as java's temp dir when executing osmosis
+  `#344 <https://github.com/openego/eGon-data/issues/344>`_

README.rst

@@ -122,9 +122,12 @@ packages are required too. Right now these are:
 * To download ERA5 weather data you need to register at the CDS
   registration page and install the CDS API key as described
   `here <https://cds.climate.copernicus.eu/api-how-to>`_
-  You also have to agree on the `terms of use 
+  You also have to agree on the `terms of use
   <https://cds.climate.copernicus.eu/cdsapp/#!/terms/licence-to-use-copernicus-products>`_
 
+* Make sure you have enough free disk space (~350 GB) in your working
+  directory.
+
 Installation
 ============
 
@@ -188,6 +191,10 @@ solution.
    can't be run on laptop. Use the :ref:`test mode <Test mode>` for
    experimenting.
 
+.. warning::
+
+   A complete run of the workflow needs loads of free disk space (~350 GB) to
+   store (temporary) files.
 
 Test mode
 ---------
@@ -206,4 +213,4 @@ Data is reduced during execution of the workflow to represent only this area.
 Further Reading
 ===============
 
-You can find more in depth documentation at https://eGon-data.readthedocs.io.
+You can find more in-depth documentation at https://eGon-data.readthedocs.io.

src/egon/data/processing/osmtgmod/__init__.py

@@ -6,6 +6,7 @@
 import datetime
 import logging
 import codecs
+from pathlib import Path
 import egon.data.config
 from egon.data.config import settings
 import egon.data.subprocess as subproc
@@ -25,8 +26,7 @@ def run_osmtgmod():
         target_path = osm_config["target"]["path_testmode"]
 
     filtered_osm_pbf_path_to_file = os.path.join(
-        egon.data.__path__[0] + "/datasets" + "/osm/"
-        + target_path
+        egon.data.__path__[0], "datasets", "osm", target_path
     )
     docker_db_config = db.credentials()
 
@@ -53,7 +53,7 @@ def import_osm_data():
         )
 
     else:
-    	subproc.run(
+        subproc.run(
             [
                 "git",
                 "clone",
@@ -74,8 +74,7 @@ def import_osm_data():
         target_path = osm_config["target"]["path_testmode"]
 
     filtered_osm_pbf_path_to_file = os.path.join(
-        egon.data.__path__[0] + "/datasets" + "/osm/"
-        + target_path
+        egon.data.__path__[0], "datasets", "osm", target_path
     )
 
     docker_db_config=db.credentials()
@@ -141,13 +140,19 @@ def import_osm_data():
         {config['osm_data']['osmosis_path_to_binary']}"""
         )
 
+    # create directory to store osmosis' temp files
+    osmosis_temp_dir = Path('.') / "osmosis_temp/"
+    if not os.path.exists(osmosis_temp_dir):
+        os.mkdir(osmosis_temp_dir)
+
     subproc.run(
-            "%s --read-pbf %s --write-pgsql \
+            "JAVACMD_OPTIONS='%s' %s --read-pbf %s --write-pgsql \
                 database=%s host=%s user=%s password=%s"
             % (
+                f"-Djava.io.tmpdir={osmosis_temp_dir}",
                 os.path.join(egon.data.__path__[0],
-                                 "processing/osmtgmod/osmTGmod/",
-                                 config["osm_data"]["osmosis_path_to_binary"]),
+                             "processing/osmtgmod/osmTGmod/",
+                             config["osm_data"]["osmosis_path_to_binary"]),
                 filtered_osm_pbf_path_to_file,
                 config_database,
                 config["postgres_server"]["host"]
@@ -160,7 +165,6 @@ def import_osm_data():
         )
     logging.info("Importing OSM-Data...")
 
-
     # After updating OSM-Data, power_tables (for editing)
     # have to be updated as well
     logging.info("Creating power-tables...")