[Tile-serving] [openstreetmap/osm2pgsql] New dependency manager (#1168)

[Jochen Topf]

@joto commented on this pull request.



> @@ -63,7 +63,17 @@ int main(int argc, char *argv[])
         auto const outputs =
             output_t::create_outputs(middle->get_query_instance(), options);
 
-        osmdata_t osmdata{middle, outputs};
+        bool const need_dependencies =
+            std::any_of(outputs.cbegin(), outputs.cend(),
+                        [](std::shared_ptr<output_t> const &output) {
+                            return output->need_forward_dependencies();
+                        });
+
+        auto dependency_manager = std::unique_ptr<dependency_manager_t>(
+            need_dependencies ? new full_dependency_manager_t{middle.get()}
+                              : new dependency_manager_t{});
+
+        osmdata_t osmdata{dependency_manager.get(), middle, outputs};

I added a commit that moves the dependency manager into osmdata.

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