The modelmetadataprovider does significant reflection caching, which shows
up as a hotspot. It's only of our most commonly used services, so not only
do a TON of instances get created, they are very heavy-weight because of
the two ConcurrentDictionary instances they have.
- allows calling .shade files to avoid repeated `TestCommand()` calls
nit in _node-install.shade:
- name `default nodeDir` variable to match other shade files; reusing value
This is a major refactor of how IBinderMetadata interacts with model
binders and value providers. We're doing this to support better
extensibility for metadata in ApiExplorer.
You'll notice a bunch of deleted code in DefaultApiDescriptionProvider
that maps metadata marker interfaces to a fixed list of Api sources. This
is replaced now with IBindingSourceMetadata - which also replaces the
hierarchy of marker interfaces. Now user code can create an arbitrary
binding source and have a consistent API for model-binders,
value-providers and full-visibility in ApiExplorer as
well.
Additonally, there's some error checking in place that better enforces the
constraints we already have in the system. IE you can't create a 'greedy'
model binder that uses value-provider data.
Two additional enhancements are planned for followup PRs:
1. Add a BindingSource property to model-metadata. This will remove some
duplication, but I want to delay it because it would touch another 10 or
so files.
2. Add an extensibility interface for our 'special' model binders like the
file binder so these can show up in ApiExplorer as well.
expire files in razor file cache.
Add a functional test to ensure the compiler cache does not get
initialized until the first request to a View.
Fixes#1708
- Added the ability to opt-out of TagHelper parsing by adding a '!' to the beginning of a tag name.
- Modified parsing logic to allow bangs in tags.
- Bangs in tags are removed from output always and are handled as meta code.
#187
- @addtaghelper and @removetaghelper can now utilize the '*' wild card to represent 0 or more characters.
- Restricted the @addtaghelper to need the TypeName. @addtaghelper "MyAssemblyName" => @addtaghelper "*, MyAssemblyName".
#285