fix: avoid missing specialized keys in the options hash (#166)

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

tests/test_options_serialization.py

@@ -0,0 +1,54 @@
+from docling_serve.datamodel.convert import (
+    ConvertDocumentsOptions,
+    PictureDescriptionApi,
+)
+from docling_serve.docling_conversion import (
+    _hash_pdf_format_option,
+    get_pdf_pipeline_opts,
+)
+
+
+def test_options_cache_key():
+    hashes = set()
+
+    opts = ConvertDocumentsOptions()
+    pipeline_opts = get_pdf_pipeline_opts(opts)
+    hash = _hash_pdf_format_option(pipeline_opts)
+    assert hash not in hashes
+    hashes.add(hash)
+
+    opts.do_picture_description = True
+    pipeline_opts = get_pdf_pipeline_opts(opts)
+    hash = _hash_pdf_format_option(pipeline_opts)
+    # pprint(pipeline_opts.pipeline_options.model_dump(serialize_as_any=True))
+    assert hash not in hashes
+    hashes.add(hash)
+
+    opts.picture_description_api = PictureDescriptionApi(
+        url="http://localhost",
+        params={"model": "mymodel"},
+        prompt="Hello 1",
+    )
+    pipeline_opts = get_pdf_pipeline_opts(opts)
+    hash = _hash_pdf_format_option(pipeline_opts)
+    # pprint(pipeline_opts.pipeline_options.model_dump(serialize_as_any=True))
+    assert hash not in hashes
+    hashes.add(hash)
+
+    opts.picture_description_api = PictureDescriptionApi(
+        url="http://localhost",
+        params={"model": "your-model"},
+        prompt="Hello 1",
+    )
+    pipeline_opts = get_pdf_pipeline_opts(opts)
+    hash = _hash_pdf_format_option(pipeline_opts)
+    # pprint(pipeline_opts.pipeline_options.model_dump(serialize_as_any=True))
+    assert hash not in hashes
+    hashes.add(hash)
+
+    opts.picture_description_api.prompt = "World"
+    pipeline_opts = get_pdf_pipeline_opts(opts)
+    hash = _hash_pdf_format_option(pipeline_opts)
+    # pprint(pipeline_opts.pipeline_options.model_dump(serialize_as_any=True))
+    assert hash not in hashes
+    hashes.add(hash)