fix: NoSuchFileError is stopping multiprocessing sidecar files TDE-1007

scripts/files/fs.py

@@ -98,12 +98,12 @@ def write_sidecars(inputs: List[str], target: str, concurrency: Optional[int] =
 
     """
     with ThreadPoolExecutor(max_workers=concurrency) as executor:
-        try:
-            results = {write_file(executor, input_, target): input_ for input_ in inputs}
-            for future in as_completed(results):
+        results = {write_file(executor, input_, target): input_ for input_ in inputs}
+        for future in as_completed(results):
+            try:
                 get_log().info("wrote_sidecar_file", path=future.result())
-        except NoSuchFileError:
-            get_log().info("No sidecar file found; skipping")
+            except NoSuchFileError:
+                get_log().info("No sidecar file found; skipping")
 
 
 def write_file(executor: ThreadPoolExecutor, input_: str, target: str) -> Future[str]:
@@ -117,7 +117,12 @@ def write_file(executor: ThreadPoolExecutor, input_: str, target: str) -> Future
     Returns:
         Future[str]: The result of the execution.
     """
-    return executor.submit(write, os.path.join(target, f"{os.path.basename(input_)}"), read(input_))
+    future: Future[str] = Future()
+    try:
+        future = executor.submit(write, os.path.join(target, f"{os.path.basename(input_)}"), read(input_))
+    except NoSuchFileError as nsfe:
+        future.set_exception(nsfe)
+    return future
 
 
 class NoSuchFileError(Exception):

scripts/files/tests/fs_test.py

@@ -1,11 +1,14 @@
 import json
+import os
+from shutil import rmtree
+from tempfile import mkdtemp
 
 from boto3 import resource
 from moto import mock_s3
 from moto.s3.responses import DEFAULT_REGION_NAME
 from pytest import CaptureFixture, raises
 
-from scripts.files.fs import NoSuchFileError, read, write_all, write_sidecars
+from scripts.files.fs import NoSuchFileError, read, write, write_all, write_sidecars
 
 
 def test_read_key_not_found_local() -> None:
@@ -25,9 +28,11 @@ def test_read_key_not_found_s3(capsys: CaptureFixture[str]) -> None:
     assert logs["msg"] == "s3_key_not_found"
 
 
-def test_write_all_file_not_found_local() -> None:
-    with raises(NoSuchFileError):
+def test_write_all_file_not_found_local(capsys: CaptureFixture[str]) -> None:
+    # Raises an exception as all files are not writte·
+    with raises(Exception):
         write_all(["/test.prj"], "/tmp")
+    assert '"error": "NoSuchFileError()"' in capsys.readouterr().out
 
 
 def test_write_sidecars_file_not_found_local(capsys: CaptureFixture[str]) -> None:
@@ -38,12 +43,14 @@ def test_write_sidecars_file_not_found_local(capsys: CaptureFixture[str]) -> Non
 
 
 @mock_s3  # type: ignore
-def test_write_all_key_not_found_s3() -> None:
+def test_write_all_key_not_found_s3(capsys: CaptureFixture[str]) -> None:
     s3 = resource("s3", region_name=DEFAULT_REGION_NAME)
     s3.create_bucket(Bucket="testbucket")
 
-    with raises(NoSuchFileError):
+    # Raises an exception as all files are not written
+    with raises(Exception):
         write_all(["s3://testbucket/test.tif"], "/tmp")
+    assert '"error": "NoSuchFileError()"' in capsys.readouterr().out
 
 
 @mock_s3  # type: ignore
@@ -56,3 +63,20 @@ def test_write_sidecars_key_not_found_s3(capsys: CaptureFixture[str]) -> None:
     # capsys.readouterr().out json string format is not valid which implies
     # we can't parse it to find the actual `msg`
     assert "No sidecar file found; skipping" in capsys.readouterr().out
+
+
+def test_write_sidecars_one_found(capsys: CaptureFixture[str]) -> None:
+    target = mkdtemp()
+    # Add a file to read
+    content = b"test content"
+    path = os.path.join(target, "test.tfw")
+    write(path, content)
+    non_existing_path = os.path.join(target, "test.prj")
+    # Write the sidecar files with one unexisting
+    write_sidecars([non_existing_path, path], os.path.join(target, "/tmp"))
+    logs = capsys.readouterr().out
+    # One has not been found
+    assert "No sidecar file found; skipping" in logs
+    # One has been found
+    assert "wrote_sidecar_file" in logs
+    rmtree(target)