X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=src%2Fbindings%2Fpython%2Fbt2%2Fbt2%2Ftrace_collection_message_iterator.py;h=3003c5f3730f8fdf9e3f4f6b7ba8a75a1e8cc9a2;hp=56b48da9ff8061fe4a96e70870495ec711c313a2;hb=39b351f91e4c70b30530b915d49b74d6004dac42;hpb=829185774639595c2a6324697be5aa016cb03f8a

diff --git a/src/bindings/python/bt2/bt2/trace_collection_message_iterator.py b/src/bindings/python/bt2/bt2/trace_collection_message_iterator.py
index 56b48da9..3003c5f3 100644
--- a/src/bindings/python/bt2/bt2/trace_collection_message_iterator.py
+++ b/src/bindings/python/bt2/bt2/trace_collection_message_iterator.py
@@ -130,6 +130,8 @@ def _auto_discover_source_component_specs(auto_source_comp_specs, plugin_set):
     comp_specs_raw = res['results']
     assert type(comp_specs_raw) == bt2.ArrayValue
 
+    used_input_indices = set()
+
     for comp_spec_raw in comp_specs_raw:
         assert type(comp_spec_raw) == bt2.ArrayValue
         assert len(comp_spec_raw) == 4
@@ -171,6 +173,8 @@ def _auto_discover_source_component_specs(auto_source_comp_specs, plugin_set):
             if orig_spec.obj is not AutoSourceComponentSpec._no_obj:
                 obj = orig_spec.obj
 
+            used_input_indices.add(int(idx))
+
         params['inputs'] = comp_inputs
 
         comp_specs.append(
@@ -183,6 +187,17 @@ def _auto_discover_source_component_specs(auto_source_comp_specs, plugin_set):
             )
         )
 
+    if len(used_input_indices) != len(inputs):
+        unused_input_indices = set(range(len(inputs))) - used_input_indices
+        unused_input_indices = sorted(unused_input_indices)
+        unused_inputs = [str(inputs[x]) for x in unused_input_indices]
+
+        msg = (
+            'Some auto source component specs did not produce any component: '
+            + ', '.join(unused_inputs)
+        )
+        raise RuntimeError(msg)
+
     return comp_specs