| Commit message (Collapse) | Author | Age | Files | Lines |
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Now that we have encoding strategies, we can just walk the params hash
once to encode as HWIA, and remove nils.
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we'll refactor deep munge mostly out of existence shortly
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This should have been done along with 8f8ccb9901cab457c6e1d52bdb25acf658fd5777
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this just pushes the conditional in to the case / when so we can switch
to method dispatch later
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there is no reason to `convert_hashes_to_parameters` with an assignemt
flag. The caller knows whether or not it wants the value assigned. We
should just change the uncommon case (not writing to the underlying
hash) to just call the conversion method and return that value.
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only hashes are converted to parameter objects, so lets add a branch for
them. This also removes a is_a? test for Parameters so we can be
abstracted from the class.
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Remove unnecessary `dup` from Mapper `add_route`
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The `dup` was introduced by c4106d0c08954b0761726e0015ec601b7bc7ea4b
to work around a frozen key. Nowadays, the string is already being
duplicated by the `tr` in `options[:action] ||= action.tr('-', '_')`
and later joined into a new string in `name_for_action`.
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This clears the transaction record state when the transaction finishes
with a `:committed` status.
Considering the following example where `name` is a required attribute.
Before we had `new_record?` returning `true` for a persisted record:
```ruby
author = Author.create! name: 'foo'
author.name = nil
author.save # => false
author.new_record? # => true
```
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Freeze string literals when not mutated.
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I wrote a utility that helps find areas where you could optimize your program using a frozen string instead of a string literal, it's called [let_it_go](https://github.com/schneems/let_it_go). After going through the output and adding `.freeze` I was able to eliminate the creation of 1,114 string objects on EVERY request to [codetriage](codetriage.com). How does this impact execution?
To look at memory:
```ruby
require 'get_process_mem'
mem = GetProcessMem.new
GC.start
GC.disable
1_114.times { " " }
before = mem.mb
after = mem.mb
GC.enable
puts "Diff: #{after - before} mb"
```
Creating 1,114 string objects results in `Diff: 0.03125 mb` of RAM allocated on every request. Or 1mb every 32 requests.
To look at raw speed:
```ruby
require 'benchmark/ips'
number_of_objects_reduced = 1_114
Benchmark.ips do |x|
x.report("freeze") { number_of_objects_reduced.times { " ".freeze } }
x.report("no-freeze") { number_of_objects_reduced.times { " " } }
end
```
We get the results
```
Calculating -------------------------------------
freeze 1.428k i/100ms
no-freeze 609.000 i/100ms
-------------------------------------------------
freeze 14.363k (± 8.5%) i/s - 71.400k
no-freeze 6.084k (± 8.1%) i/s - 30.450k
```
Now we can do some maths:
```ruby
ips = 6_226k # iterations / 1 second
call_time_before = 1.0 / ips # seconds per iteration
ips = 15_254 # iterations / 1 second
call_time_after = 1.0 / ips # seconds per iteration
diff = call_time_before - call_time_after
number_of_objects_reduced * diff * 100
# => 0.4530373333993266 miliseconds saved per request
```
So we're shaving off 1 second of execution time for every 220 requests.
Is this going to be an insane speed boost to any Rails app: nope. Should we merge it: yep.
p.s. If you know of a method call that doesn't modify a string input such as [String#gsub](https://github.com/schneems/let_it_go/blob/b0e2da69f0cca87ab581022baa43291cdf48638c/lib/let_it_go/core_ext/string.rb#L37) please [give me a pull request to the appropriate file](https://github.com/schneems/let_it_go/blob/b0e2da69f0cca87ab581022baa43291cdf48638c/lib/let_it_go/core_ext/string.rb#L37), or open an issue in LetItGo so we can track and freeze more strings.
Keep those strings Frozen
![](https://www.dropbox.com/s/z4dj9fdsv213r4v/let-it-go.gif?dl=1)
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Fix exception overwritten for parameters fetch method
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When executing an `ActionController::Parameters#fetch` with a block
that raises a `KeyError` the raised `KeyError` will be rescued and
converted to an `ActionController::ParameterMissing` exception,
covering up the original exception.
[Jonas Schubert Erlandsson & Roque Pinel]
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This will silence deprecation warnings.
Most of the test can be changed from `render :text` to render `:plain`
or `render :body` right away. However, there are some tests that needed
to be fixed by hand as they actually assert the default Content-Type
returned from `render :body`.
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Add deprecation warning for `render :text`
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We've started on discouraging the usage of `render :text` in #12374.
This is a follow-up commit to make sure that we print out the
deprecation warning.
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this way we don't need to call `to_unsafe_h` to get access to ask
questions about the underlying hash
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now `hash_filter` doesn't need to know about the `Parameters` class
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Since we proved that `element` is always of type `Parameter`, we know
that it will always respond to `permit`, so lets remove this conditional
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`element` can never be a hash because:
1. `slice` returns a Parameters object and calls each on it: https://github.com/rails/rails/blob/cb3f25593b1137e344086364d4b1a52c08e8eb3b/actionpack/lib/action_controller/metal/strong_parameters.rb#L656
2. `each` which is implemented by `each_pair` will call `convert_hashes_to_parameters` on the value: https://github.com/rails/rails/blob/cb3f25593b1137e344086364d4b1a52c08e8eb3b/actionpack/lib/action_controller/metal/strong_parameters.rb#L192-197
3. `convert_hashes_to_parameters` will convert any hash objects in to parameters objects: https://github.com/rails/rails/blob/cb3f25593b1137e344086364d4b1a52c08e8eb3b/actionpack/lib/action_controller/metal/strong_parameters.rb#L550-566
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Now that the value is cached on the stack,
`array_of_permitted_scalars_filter` is exactly the same as
`array_of_permitted_scalars?`, so lets just have one
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this way the method doesn't have to know what the new params object is,
it just yields to a block. This change also caches the value of
`self[key]` on the stack
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We should disconnect `array_of_permitted_scalars_filter` from the
instance so that we can make hash filtering functional. For now, pull
the conditional up out of that method
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Various grammar corrections and wrap to 80 characters.
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`ActionController::Parameters#to_h` returns a hash, so lets have
`ActionController::Parameters#to_unsafe_h` return a hash instead of
an `ActiveSupport::HashWithIndifferentAccess` for consistency.
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This is another take at #14384 as we decided to wait until `master` is
targeting Rails 5.0. This commit is implementation-complete, as it
guarantees that all the public methods on the hash-inherited Parameters
are still working (based on test case). We can decide to follow-up later
if we want to remove some methods out from Parameters.
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Rack [already implements `redirect?` on the response object](https://github.com/rack/rack/blob/1569a985e17d9caaf94d0e97d95ef642c4ab14ba/lib/rack/response.rb#L141) so we don't need to implement our own.
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It is already on Active Support
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Replace `ActiveSupport::Concurrency::Latch` with `Concurrent::CountDownLatch` from concurrent-ruby.
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The concurrent-ruby gem is a toolset containing many concurrency
utilities. Many of these utilities include runtime-specific
optimizations when possible. Rather than clutter the Rails codebase with
concurrency utilities separate from the core task, such tools can be
superseded by similar tools in the more specialized gem. This commit
replaces `ActiveSupport::Concurrency::Latch` with
`Concurrent::CountDownLatch`, which is functionally equivalent.
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Change AC::TestResponse to AD::TestResponse
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ActionController::TestResponse was removed in d9fe10c and caused a test
failure on Action View as its test case still refers to it.
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We want to treat the response object as if it's a real response object
(not a test object), so we should only call methods that are on the
superclass.
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We shouldn't depend on specific methods imlemented in the TestResponse
subclass because the response could actually be a real response object.
In the future, we should either push the aliased predicate methods in
TestResponse up to the real response object, or remove them
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[ci skip] docs: making clear that perform_caching has a limited impact
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Removed usage line docs [ci skip]
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Concurrent load interlock (rm Rack::Lock)
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We can't actually lean on Rack::Lock's implementation, so we'll just
copy it instead. It's simple enough that that's not too troubling.
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We don't need to fully disable concurrent requests: just ensure that
loads are performed in isolation.
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PATH_INFO is already set, so this branch will never execute.
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