diff --git a/config.yaml b/config.yaml
index c044f4a..b03a504 100755
--- a/config.yaml
+++ b/config.yaml
@@ -2,7 +2,7 @@ service:
   logging_level: $LOGGING_LEVEL_ROOT|INFO  # Logging level for service logger
   response:
     type: $RESPONSE_TYPE|"file"  # Whether the analysis response is stored as file on storage or sent as stream
-    extension: $RESPONSE_FILE_EXTENSION|".IMAGE_INFO.json.gz"  # {.IMAGE_INFO.json.gz | .NER_ENTITIES.json.gz}
+    extension: $RESPONSE_FILE_EXTENSION|"IMAGE_INFO.json.gz"  # {.IMAGE_INFO.json.gz | .NER_ENTITIES.json.gz}
     key: $RESPONSE_KEY|"imageMetadata" # the key of the result {result, imageMetadata}
 
 probing_webserver:
@@ -38,7 +38,7 @@ storage:
   backend: $STORAGE_BACKEND|s3  # The type of storage to use {s3, azure}
   bucket: $STORAGE_BUCKET|"pyinfra-test-bucket"  # The bucket / container to pull files specified in queue requests from
   # TODO: Caller should specify exact file name, including extension!
-  target_file_extension: $TARGET_FILE_EXTENSION|".ORIGIN.pdf.gz"  # {.TEXT.json.gz | .ORIGIN.pdf.gz} Defines type of file to pull from storage
+  target_file_extension: $TARGET_FILE_EXTENSION|"ORIGIN.pdf.gz"  # {.TEXT.json.gz | .ORIGIN.pdf.gz} Defines type of file to pull from storage
 
   s3:
     endpoint: $STORAGE_ENDPOINT|"http://127.0.0.1:9000"
diff --git a/pyinfra/test/unit_tests/conftest.py b/pyinfra/test/unit_tests/conftest.py
index 7f72087..0d89c54 100644
--- a/pyinfra/test/unit_tests/conftest.py
+++ b/pyinfra/test/unit_tests/conftest.py
@@ -22,7 +22,7 @@ logger = logging.getLogger(__name__)
 logger.setLevel(logging.DEBUG)
 
 
-@pytest.fixture
+@pytest.fixture(scope="session")
 def bucket_name():
     return "pyinfra-test-bucket"
 
@@ -54,7 +54,7 @@ def mock_make_load_data():
     return load_data
 
 
-@pytest.fixture(params=["minio", "aws"])
+@pytest.fixture(params=["minio", "aws"], scope="session")
 def storage(client_name, bucket_name, request):
     logger.debug("Setup for storage")
     storage = Storage(get_adapter(client_name, request.param))
@@ -86,3 +86,8 @@ def get_queue_manager(queue_manager_name) -> QueueManager:
 @pytest.fixture(scope="session")
 def queue_manager(queue_manager_name) -> QueueManager:
     return get_queue_manager(queue_manager_name)
+
+
+@pytest.fixture
+def callback():
+    return lambda x: x**2
diff --git a/pyinfra/test/unit_tests/consumer_test.py b/pyinfra/test/unit_tests/consumer_test.py
index 8a613b9..ffbede8 100644
--- a/pyinfra/test/unit_tests/consumer_test.py
+++ b/pyinfra/test/unit_tests/consumer_test.py
@@ -3,11 +3,6 @@ import pytest
 from pyinfra.pyampq.consumer import Consumer
 
 
-@pytest.fixture
-def callback():
-    return lambda x: x**2
-
-
 @pytest.fixture
 def consumer(queue_manager, callback):
     return Consumer(callback, queue_manager)
diff --git a/pyinfra/test/unit_tests/queue_visitor_test.py b/pyinfra/test/unit_tests/queue_visitor_test.py
new file mode 100644
index 0000000..ada1488
--- /dev/null
+++ b/pyinfra/test/unit_tests/queue_visitor_test.py
@@ -0,0 +1,23 @@
+import pytest
+
+from pyinfra.visitor import QueueVisitor, get_object_descriptor
+
+
+@pytest.fixture()
+def visitor(storage, callback):
+    return QueueVisitor(storage, callback)
+
+
+@pytest.fixture()
+def body():
+    return {"dossierId": "folder", "fileId": "file"}
+
+
+@pytest.mark.parametrize("client_name", ["mock", "azure", "s3"], scope="session")
+class TestStorage:
+
+    def test_given_a_input_queue_message_callback_pulls_the_data_from_storage(self, visitor, body, storage, bucket_name):
+        storage.clear_bucket(bucket_name)
+        storage.put_object(**get_object_descriptor(body), data=b"content")
+        data_received = visitor.load_data(body)
+        assert b"content" == data_received
diff --git a/pyinfra/test/unit_tests/storage_test.py b/pyinfra/test/unit_tests/storage_test.py
index 01a1d93..6e8293f 100644
--- a/pyinfra/test/unit_tests/storage_test.py
+++ b/pyinfra/test/unit_tests/storage_test.py
@@ -9,7 +9,7 @@ logger = logging.getLogger(__name__)
 logger.setLevel(logging.DEBUG)
 
 
-@pytest.mark.parametrize("client_name", ["mock", "azure", "s3"])
+@pytest.mark.parametrize("client_name", ["mock", "azure", "s3"], scope="session")
 class TestStorage:
     def test_clearing_bucket_yields_empty_bucket(self, storage, bucket_name):
         storage.clear_bucket(bucket_name)
@@ -17,26 +17,31 @@ class TestStorage:
         assert not {*data_received}
 
     def test_getting_object_put_in_bucket_is_object(self, storage, bucket_name):
+        storage.clear_bucket(bucket_name)
         storage.put_object(bucket_name, "file", b"content")
         data_received = storage.get_object(bucket_name, "file")
         assert b"content" == data_received
 
     def test_getting_nested_object_put_in_bucket_is_nested_object(self, storage, bucket_name):
+        storage.clear_bucket(bucket_name)
         storage.put_object(bucket_name, "folder/file", b"content")
         data_received = storage.get_object(bucket_name, "folder/file")
         assert b"content" == data_received
 
     def test_getting_objects_put_in_bucket_are_objects(self, storage, bucket_name):
+        storage.clear_bucket(bucket_name)
         storage.put_object(bucket_name, "file1", b"content 1")
         storage.put_object(bucket_name, "folder/file2", b"content 2")
         data_received = storage.get_all_objects(bucket_name)
         assert {b"content 1", b"content 2"} == {*data_received}
 
     def test_make_bucket_produces_bucket(self, storage, bucket_name):
+        storage.clear_bucket(bucket_name)
         storage.make_bucket(bucket_name)
         assert storage.has_bucket(bucket_name)
 
     def test_listing_bucket_files_yields_all_files_in_bucket(self, storage, bucket_name):
+        storage.clear_bucket(bucket_name)
         storage.put_object(bucket_name, "file1", b"content 1")
         storage.put_object(bucket_name, "file2", b"content 2")
         full_names_received = storage.get_all_object_names(bucket_name)
diff --git a/pyinfra/visitor.py b/pyinfra/visitor.py
new file mode 100644
index 0000000..fbe901d
--- /dev/null
+++ b/pyinfra/visitor.py
@@ -0,0 +1,35 @@
+from operator import itemgetter
+from typing import Callable
+
+from pyinfra.config import CONFIG
+from pyinfra.storage.storage import Storage
+
+
+def get_object_name(body):
+    dossier_id, file_id = itemgetter("dossierId", "fileId")(body)
+    object_name = f"{dossier_id}/{file_id}.{CONFIG.target_file_extension}"
+    return object_name
+
+
+def get_object_descriptor(body):
+    return {
+        "bucket_name": CONFIG.storage.bucket,
+        # TODO: send complete filename in request, as discussed!
+        "object_name": get_object_name(body)
+    }
+
+
+class QueueVisitor:
+
+    def __init__(self, storage: Storage, callback: Callable):
+        self.storage = storage
+        self.callback = callback
+
+    def load_data(self, body):
+        return self.storage.get_object(**get_object_descriptor(body))
+
+    def process_data(self):
+        pass
+
+    def __call__(self, body):
+        pass