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Cleaned up generators tests using internal assertion helper
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Migrate to Sprockets 4.
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Add code of conduct info to README.md and to contributing guide
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Adds a code of conduct
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An easy way to begin addressing the problem of inclusivity is to be overt in our
openness, welcoming all people to contribute, and pledging in return to
value them as human beings and to foster an atmosphere of kindness,
cooperation, and understanding.
A code of conduct is one way to express these values. It lets us pledge
our respect and appreciation for contributors and participants to the
project.
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Added docs for TableDefinition #coloumns & #remove_column [ci skip]
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nobody should be touching the routes hash without going through the
NamedRouteCollection object.
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We shouldn't be messing with the NamedRouteCollection internals. Just
ask the object if the named route is in there.
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```ruby
require 'action_pack'
require 'action_dispatch'
require 'benchmark/ips'
route_set = ActionDispatch::Routing::RouteSet.new
routes = ActionDispatch::Routing::Mapper.new route_set
ObjectSpace::AllocationTracer.setup(%i{path line type})
result = ObjectSpace::AllocationTracer.trace do
500.times do
routes.resources :foo
end
end
sorted = ObjectSpace::AllocationTracer.allocated_count_table.sort_by(&:last)
sorted.each do |k,v|
next if v == 0
p k => v
end
__END__
Before:
{:T_SYMBOL=>11}
{:T_REGEXP=>17}
{:T_STRUCT=>6500}
{:T_MATCH=>12004}
{:T_OBJECT=>99009}
{:T_DATA=>100088}
{:T_HASH=>122015}
{:T_STRING=>159637}
{:T_IMEMO=>363134}
{:T_ARRAY=>433056}
After:
{:T_SYMBOL=>11}
{:T_REGEXP=>17}
{:T_STRUCT=>6500}
{:T_MATCH=>12004}
{:T_OBJECT=>91009}
{:T_DATA=>100088}
{:T_HASH=>114013}
{:T_STRING=>159637}
{:T_ARRAY=>321056}
{:T_IMEMO=>351133}
```
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Eagerly calculate and cache the name of Symbol objects in the path AST.
This drops about 26 string allocations per resource:
```ruby
require 'action_pack'
require 'action_dispatch'
require 'benchmark/ips'
route_set = ActionDispatch::Routing::RouteSet.new
routes = ActionDispatch::Routing::Mapper.new route_set
ObjectSpace::AllocationTracer.setup(%i{path line type})
result = ObjectSpace::AllocationTracer.trace do
500.times do
routes.resources :foo
end
end
sorted = ObjectSpace::AllocationTracer.allocated_count_table.sort_by(&:last)
sorted.each do |k,v|
next if v == 0
p k => v
end
__END__
Before:
{:T_SYMBOL=>11}
{:T_REGEXP=>17}
{:T_STRUCT=>6500}
{:T_MATCH=>12004}
{:T_OBJECT=>99009}
{:T_DATA=>116084}
{:T_HASH=>122015}
{:T_STRING=>172647}
{:T_IMEMO=>371132}
{:T_ARRAY=>433056}
After:
{:T_SYMBOL=>11}
{:T_REGEXP=>17}
{:T_STRUCT=>6500}
{:T_MATCH=>12004}
{:T_OBJECT=>99009}
{:T_DATA=>100088}
{:T_HASH=>122015}
{:T_STRING=>159637}
{:T_IMEMO=>363134}
{:T_ARRAY=>433056}
```
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Add a native JSON data type support in MySQL
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As of MySQL 5.7.8, MySQL supports a native JSON data type.
Example:
create_table :json_data_type do |t|
t.json :settings
end
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Add Docs for ActiveRecord #check_pending [ci skip]
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Correct error message in Standard American english and add a test cas…
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the same.
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verb_matcher never returns nil.
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Use == 0 instead of .zero? in #try
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The perf gain is relatively minor but consistent:
```
Calculating -------------------------------------
0.zero? 137.091k i/100ms
1.zero? 137.350k i/100ms
0 == 0 142.207k i/100ms
1 == 0 144.724k i/100ms
-------------------------------------------------
0.zero? 8.893M (± 6.5%) i/s - 44.280M
1.zero? 8.751M (± 6.4%) i/s - 43.677M
0 == 0 10.033M (± 7.0%) i/s - 49.915M
1 == 0 9.814M (± 8.0%) i/s - 48.772M
```
And try! is quite a big hotspot for us so every little gain is appreciable.
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Rather than building a regexp for every route, lets use the strategy
pattern to select among objects that can match HTTP verbs. This commit
introduces strategy objects for each verb that has a predicate method on
the request object like `get?`, `post?`, etc.
When we build the route object, look up the strategy for the verbs the
user specified. If we can't find it, fall back on string matching.
Using a strategy / null object pattern (the `All` VerbMatcher is our
"null" object in this case) we can:
1) Remove conditionals
2) Drop boot time allocations
2) Drop run time allocations
3) Improve runtime performance
Here is our boot time allocation benchmark:
```ruby
require 'action_pack'
require 'action_dispatch'
route_set = ActionDispatch::Routing::RouteSet.new
routes = ActionDispatch::Routing::Mapper.new route_set
result = ObjectSpace::AllocationTracer.trace do
500.times do
routes.resources :foo
end
end
sorted = ObjectSpace::AllocationTracer.allocated_count_table.sort_by(&:last)
sorted.each do |k,v|
next if v == 0
p k => v
end
__END__
Before:
$ be ruby -rallocation_tracer route_test.rb
{:T_SYMBOL=>11}
{:T_REGEXP=>4017}
{:T_STRUCT=>6500}
{:T_MATCH=>12004}
{:T_DATA=>84092}
{:T_OBJECT=>99009}
{:T_HASH=>122015}
{:T_STRING=>216652}
{:T_IMEMO=>355137}
{:T_ARRAY=>441057}
After:
$ be ruby -rallocation_tracer route_test.rb
{:T_SYMBOL=>11}
{:T_REGEXP=>17}
{:T_STRUCT=>6500}
{:T_MATCH=>12004}
{:T_DATA=>84092}
{:T_OBJECT=>99009}
{:T_HASH=>122015}
{:T_STRING=>172647}
{:T_IMEMO=>355136}
{:T_ARRAY=>433056}
```
This benchmark adds 500 resources. Each resource has 8 routes, so it
adds 4000 routes. You can see from the results that this patch
eliminates 4000 Regexp allocations, ~44000 String allocations, and ~8000
Array allocations. With that, we can figure out that the previous code
would allocate 1 regexp, 11 strings, and 2 arrays per route *more* than
this patch in order to handle verb matching.
Next lets look at runtime allocations:
```ruby
require 'action_pack'
require 'action_dispatch'
require 'benchmark/ips'
route_set = ActionDispatch::Routing::RouteSet.new
routes = ActionDispatch::Routing::Mapper.new route_set
routes.resources :foo
route = route_set.routes.first
request = ActionDispatch::Request.new("REQUEST_METHOD" => "GET")
result = ObjectSpace::AllocationTracer.trace do
500.times do
route.matches? request
end
end
sorted = ObjectSpace::AllocationTracer.allocated_count_table.sort_by(&:last)
sorted.each do |k,v|
next if v == 0
p k => v
end
__END__
Before:
$ be ruby -rallocation_tracer route_test.rb
{:T_MATCH=>500}
{:T_STRING=>501}
{:T_IMEMO=>1501}
After:
$ be ruby -rallocation_tracer route_test.rb
{:T_IMEMO=>1001}
```
This benchmark runs 500 calls against the `matches?` method on the route
object. We check this method in the case that there are two methods
that match the same path, but they are differentiated by the verb (or
other conditionals). For example `POST /users` vs `GET /users`, same
path, different action.
Previously, we were using regexps to match against the verb. You can
see that doing the regexp match would allocate 1 match object and 1
string object each time it was called. This patch eliminates those
allocations.
Next lets look at runtime performance.
```ruby
require 'action_pack'
require 'action_dispatch'
require 'benchmark/ips'
route_set = ActionDispatch::Routing::RouteSet.new
routes = ActionDispatch::Routing::Mapper.new route_set
routes.resources :foo
route = route_set.routes.first
match = ActionDispatch::Request.new("REQUEST_METHOD" => "GET")
no_match = ActionDispatch::Request.new("REQUEST_METHOD" => "POST")
Benchmark.ips do |x|
x.report("match") do
route.matches? match
end
x.report("no match") do
route.matches? no_match
end
end
__END__
Before:
$ be ruby -rallocation_tracer runtime.rb
Calculating -------------------------------------
match 17.145k i/100ms
no match 24.244k i/100ms
-------------------------------------------------
match 259.708k (± 4.3%) i/s - 1.303M
no match 453.376k (± 5.9%) i/s - 2.279M
After:
$ be ruby -rallocation_tracer runtime.rb
Calculating -------------------------------------
match 23.958k i/100ms
no match 29.402k i/100ms
-------------------------------------------------
match 465.063k (± 3.8%) i/s - 2.324M
no match 691.956k (± 4.5%) i/s - 3.469M
```
This tests tries to see how many times it can match a request per
second. Switching to method calls and string comparison makes the
successful match case about 79% faster, and the unsuccessful case about
52% faster.
That was fun!
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We don't need to add and delete from the conditions hash anymore, just
pass the regexp directly to the constructor.
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verb matching is very common (all routes besides rack app endpoints
require one). We will extract verb matching for now, and use a more
efficient method of matching (then regexp) later
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I want to change the real constructor to take a particular parameter for
matching the request method
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This commit introduces a functional Path AST visitor and implements
`each` on the AST in terms of the functional visitor. The functional
visitor doesn't maintain state, so we only need to allocate one of them.
Given this benchmark route file:
```ruby
require 'action_pack'
require 'action_dispatch'
route_set = ActionDispatch::Routing::RouteSet.new
routes = ActionDispatch::Routing::Mapper.new route_set
ObjectSpace::AllocationTracer.setup(%i{path line type})
result = ObjectSpace::AllocationTracer.trace do
500.times{|i|
routes.resource :omglol
}
end
result.find_all { |k,v| k.first =~ /git\/rails/ }.sort_by { |k,v|
v.first
}.each { |k,v|
p k => v
}
```
node.rb line 17 was in our top 3 allocation spot:
```
{["/Users/aaron/git/rails/actionpack/lib/action_dispatch/journey/nodes/node.rb", 17, :T_OBJECT]=>[31526, 0, 28329, 0, 2, 1123160]}
{["/Users/aaron/git/rails/actionpack/lib/action_dispatch/routing/mapper.rb", 2080, :T_IMEMO]=>[34002, 0, 30563, 0, 2, 1211480]}
{["/Users/aaron/git/rails/actionpack/lib/action_dispatch/routing/mapper.rb", 2071, :T_IMEMO]=>[121934, 1, 109608, 0, 7, 4344400]}
```
This commit eliminates allocations at that place.
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add another predicate method so we can avoid is_a checks
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we don't really need this visitor
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Routes are always constructed with a list of required_defaults, so
there's no need to check whether or not it's nil
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Fix master build
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Small fixes [ci skip]
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we may want to change the name of the class at some point, so it's
better to use a predicate
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The string we create is almost always the same, so rather than joining
all the time, lets join once, then reuse that string everywhere.
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Update the Debugging Rails Guide [skip ci]
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[skip ci].
- Update to the current output when running `byebug help`.
- Remove the alias `exit` because it does not work and seems to have
been removed from Byebug, as confirmed by the source code here:
https://github.com/deivid-rodriguez/byebug/blob/master/lib/byebug/comman
ds/quit.rb
- Added the useful `q!` instead to avoid the "Really quit? (y/n)"
prompt.
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Replacing lambda with proc getting argument error because of it.
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fix Docs [ci skip]
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typo fix [ci skip]
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Improve params parser
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