[BUGFIX LTS] remove bad setFactoryFor call
#20025
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This call *attempted* to avoid setting the `INIT_FACTORY` on items which did not need it (specifically, it avoided setting it on things which were not instantiable), but ultimately failed to do. It was ultimately setting the new `FactoryManager` instance as the `INIT_FACTORY` value on each instantiable object, which includes classes and not just class instances, since objects are only treated as non-instantiable when they explicitly specify `instantiate: false`. The net was a memory leak: the routing service *class* ended up with an `INIT_FACTORY` pointing to a `FactoryManager` instance which in turn always had a `container` on it, which meant that there was a cycle (the container also referenced the service) and thus a leak. This affects both tests and FastBoot, where we construct new instances of the service whenever we call the `visit` API.
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setFactoryFor callsetFactoryFor call
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Identified as part of the work on #20025, this particular `setFactoryFor` was needed at one time but is now defunct. Remove it.
This was referenced Mar 16, 2022
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Identified as part of the work on #20025, this particular `setFactoryFor` was needed at one time but is now defunct. Remove it.
chriskrycho
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Mar 16, 2022
Identified as part of the work on #20025, this particular `setFactoryFor` was needed at one time but is now defunct. Remove it.
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I've deployed this (by patching it) to prod and can confirm: it entirely resolves the memory leak we'd seen! 🎉 |
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🔝 👏 |
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This call attempted to avoid setting the
INIT_FACTORYon items which did not need it (specifically, it avoided setting it on things which were not instantiable), but ultimately failed to do. It was ultimately setting the newFactoryManagerinstance as theINIT_FACTORYvalue on each instantiable object, which includes classes and not just class instances, since objects are only treated as non-instantiable when they explicitly specifyinstantiate: false.The net was a memory leak: the routing service class ended up with an
INIT_FACTORYpointing to aFactoryManagerinstance which in turn always had acontaineron it, which meant that there was a cycle (the container also referenced the service) and thus a leak. This affects both tests and FastBoot, where we construct new instances of the service whenever we call thevisitAPI.