mruby.handler
paths:
"/":
proxy.reverse.url: http://localhost:5001
proxy.preserve-host: ON
mruby.handler: |
require "/srv/www/rewrite_rules.rb"
lambda do |env|
RewriteRules.rewrite(env) do
rewrite '/favicon.ico', '/images/favicon.ico', :break
rewrite '/apple-touch-icon.png', '/images/apple-touch-icon.png', :break
rewrite %r{^/2005/colors-canvas\.xhtml$}, '/2005/colors-canvas.html', :permanent
rewrite %r{^/2005/colors-canvas$}, '/2005/colors-canvas.html', :permanent
rewrite %r{^/logs/latest$}, '/', :permanent
rewrite %r{^/logs/latest.rdf$}, '/feed', :permanent
rewrite %r{^/logs/latest.atom$}, '/feed', :permanent
rewrite %r{^/latest\.rdf$}, '/feed', :permanent
rewrite %r{^/blog/index\.(rdf|atom)$}, '/feed', :permanent
rewrite %r{^/logs(/.+?)(\.(rdf|atom))$}, '/feed', :permanent
rewrite %r{^/logs(/.+?)(\.(x?html|xml|txt))?$}, '\1', :permanent
rewrite %r{^/blog(/.+?)(\.(x?html|xml|txt))?$}, '\1', :permanent
rewrite %r{^/photo$}, '/photo/', :permanent
rewrite %r{^/(\d\d\d\d/\d\d(/\d\d)?)$}, '/\1/', :permanent
rewrite %r{^/\d\d\d\d/$}, '/', :redirect
rewrite %r{^/view-img(/.+?)$}, '\1', :permanent
end
end h2o の path はディレクトリの指定しかできないみたいなので (自動的に末尾スラッシュがついたりする)、rewrite で同時にパス決め打ちのディスパッチも行っています。
rewrite_rules.rb
class RewriteRules
class RewriteRulesException < Exception
attr_reader :response
def initialize(response)
@response = response
end
end
attr_reader :env
attr_reader :path
def self.rewrite(env, &block)
self.new(env).run(&block)
end
def initialize(env, &block)
@env = env
@path_orig = "#{env['SCRIPT_NAME']}#{env['PATH_INFO']}"
@path = @path_orig.dup
end
def run(&block)
begin
instance_eval(&block)
if @path != @path_orig
return [ 307, { 'x-reproxy-url' => path }, [ ] ]
else
return [ 399, {}, [ ] ]
end
rescue RewriteRulesException => e
return e.response
end
end
def rewrite(regexp, replace, flag=:continue)
if @path.gsub!(regexp, replace)
case flag
when :redirect
raise RewriteRulesException.new([ 302, { 'Location' => @path }, [ ] ])
when :permanent
raise RewriteRulesException.new([ 301, { 'Location' => @path }, [ ] ])
when :break
raise RewriteRulesException.new([ 307, { 'x-reproxy-url' => @path }, [ ] ])
when :continue
else
raise "unsupported flag: #{flag}"
end
end
end
end
require 'rspec'
describe RewriteRules do
it "should treat :permanent as 302 redirect" do
env = {
'PATH_INFO' => '/logs/latest'
}
expect(RewriteRules.rewrite(env) {
rewrite %r{^/logs/latest$}, '/', :permanent
rewrite %r{^/logs(/.+?)(\.(x?html|xml|txt))?$}, '\1', :permanent
rewrite %r{^/foobar/}, '/bazbaz/'
}).to eq( [301, {"Location"=>"/"}, []])
end
it "should treat :redirect as 301 redirect" do
env = {
'PATH_INFO' => '/logs/piyo.html'
}
expect(RewriteRules.rewrite(env) {
rewrite %r{^/logs/latest$}, '/', :permanent
rewrite %r{^/logs(/.+?)(\.(x?html|xml|txt))?$}, '\1', :redirect
rewrite %r{^/foobar/}, '/bazbaz/'
}).to eq([302, {"Location"=>"/piyo"}, []])
end
it "should treat as internal proxy by default" do
env = {
'PATH_INFO' => '/foobar/baz'
}
expect(RewriteRules.rewrite(env) {
rewrite %r{^/logs/latest$}, '/', :permanent
rewrite %r{^/logs(/.+?)(\.(x?html|xml|txt))?$}, '\1', :permanent
rewrite %r{^/foobar/}, '/bazbaz/'
}).to eq([307, {"x-reproxy-url"=>"/bazbaz/baz"}, []])
end
it "can write logic in dsl" do
env = {
'PATH_INFO' => '/foobar/baz',
'XXX' => true,
}
expect(RewriteRules.rewrite(env) {
if env['XXX']
rewrite %r{^/foobar/}, '/bazbaz/'
end
}).to eq([307, {"x-reproxy-url"=>"/bazbaz/baz"}, []])
env = {
'PATH_INFO' => '/foobar/baz',
'XXX' => false
}
expect(RewriteRules.rewrite(env) {
if env['XXX']
rewrite %r{^/foobar/}, '/bazbaz/'
end
}).to eq([399, {}, []])
end
end 
