fix: add ckanext.dc_serve.tmp_dir for temporary condense location

CHANGELOG

@@ -1,3 +1,5 @@
+0.15.1
+ - fix: add ckanext.dc_serve.tmp_dir for temporary condense location
 0.15.0
  - BREAKING: drop support for DCOR API version "1"
  - ref: migrate to dcor_shared 0.8.0

README.rst

@@ -13,7 +13,9 @@ This plugin implements:
 - A background job that generates a condensed dataset after a resource
   has been created.
 - A background job that uploads the condensed dataset to the S3 object
-  store.
+  store. The temporary location of the condensed dataset that is created
+  can be set by setting the `ckanext.dc_serve.tmp_dir` configuration
+  option.
 - A route that makes the condensed dataset available via
   "/dataset/{id}/resource/{resource_id}/condensed.rtdc"
   (S3 object store data is made available via a redirect)

ckanext/dc_serve/jobs.py

@@ -27,8 +27,13 @@ def generate_condensed_resource_job(resource, override=False):
         and (override
              or not s3cc.artifact_exists(resource_id=rid,
                                          artifact="condensed"))):
-        # Create the condensed file in a temporary location
-        with tempfile.TemporaryDirectory() as ttd_name:
+        # Create the condensed file in a cache location
+        cache_loc = get_ckan_config_option("ckanext.dc_serve.tmp_dir")
+        if not cache_loc:
+            cache_loc = None  # probably defaults to /tmp in TemporaryDirectory
+
+        with tempfile.TemporaryDirectory(ignore_cleanup_errors=True,
+                                         dir=cache_loc) as ttd_name:
             path_cond = pathlib.Path(ttd_name) / "condensed.rtdc"
             with CKANResourceFileLock(
                     resource_id=rid,