Class: ReverseProxy::Config::Nginx

Inherits:
Generic
  • Object
show all
Defined in:
lib/reverse_proxy/config/nginx.rb

Instance Attribute Summary

Attributes inherited from Generic

#proxy

Instance Method Summary collapse

Methods inherited from Generic

#initialize, #prepare

Methods included from Logger

#log

Constructor Details

This class inherits a constructor from ReverseProxy::Config::Generic

Instance Method Details

#assets ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 123

def assets
  return unless proxy.application.send_assets?
  <<-ASSETS.strip_heredoc
  location ~ ^#{proxy.application.assets}/  {
      root #{Rails.root.join("public")};
      gzip_static on;
      expires max;
      add_header Cache-Control public;
      access_log /dev/null;
  }
  ASSETS
end

#charset_types ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 72

def charset_types
  %w{
    text/xml
    text/plain
    text/vnd.wap.wml
    application/x-javascript
    application/rss+xml
    text/css
    application/javascript
    application/json
  }.join(" ")
end

#chroot ⇒ Object Also known as: dir 



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# File 'lib/reverse_proxy/config/nginx.rb', line 141

def chroot
  prepare :dir do
    Pathname.new "/tmp/#{proxy.id}"
  end
end

#clean ⇒ Object Also known as: delete 



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# File 'lib/reverse_proxy/config/nginx.rb', line 10

def clean
  File.unlink(file) rescue nil
  File.unlink(pid)  rescue nil
  FileUtils.rmdir(dir) rescue nil
end

#content ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 32

def content
  ERB.new(<<-CONTENT.strip_heredoc).result(binding).gsub(/\n/,'').gsub(/\s{2,}/, ' ')
    daemon off;
    worker_processes 2;
    worker_rlimit_nofile 8192;
    pid <%= pid.relative_path_from chroot %>;
    error_log error.log;
    events {
      worker_connections 2048;
    }
    http {
      <%= types %>
      <%= upstream %>
      default_type  <%= default_type %>;
      charset_types <%= charset_types %>;
      keepalive_timeout 5;
      access_log access.log;
      tcp_nopush on;
      sendfile on;
      gzip on;
      gzip_comp_level    5;
      gzip_min_length    256;
      gzip_proxied       any;
      gzip_vary          on;
      gzip_types <%= gzip_types %>;
      server {
        <%= listeners %>
        <%= assets %>
        <%= root %>
        <%= redirect %>
      }
    }
  CONTENT
end

#default_type ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 69

def default_type
  "application/octet-stream"
end

#file ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 138

def file
  chroot.join("nginx.cfg")
end

#gzip_types ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 87

def gzip_types
  proxy.application.mime_types.keys.select do |type|
    type.match(/((font)|(^text)|(css)|(script)|(bmp$)|(ml$))/)
  end.reject{|x|x=="text/html"}.join(" ")
end

#listeners ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 97

def listeners
  proxy.binds.collect do |bind|
    "listen #{bind.tcp.to_nginx};\n"
  end.join
end

#pid ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 135

def pid
  chroot.join("nginx.pid")
end

#redirect ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 107

def redirect
  <<-REDIRECT.strip_heredoc
  location @#{proxy.id} {
    proxy_read_timeout    300;
    proxy_connect_timeout 300;
    proxy_redirect        off;

    proxy_set_header  X-Forwarded-Proto https;
    proxy_set_header  X-Forwarded-Ssl   on;
    proxy_set_header  Host              $http_host;
    proxy_set_header  X-Real-IP         $remote_addr;

    proxy_pass http://#{upstream_label};
  }
  REDIRECT
end

#root ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 102

def root
  "location / {
    try_files $uri $uri/index.html $uri.html @#{proxy.id};
  }"
end

#types ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 92

def types
  @types   = proxy.application.mime_types.collect{|type,extensions|"#{type} #{extensions};"}
  @types ||= ["text/plain txt;"]
  "types {" + @types.join + "}"
end

#updated! ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 24

def updated!
  @hash = Digest::MD5.hexdigest(content)
end

#updated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/reverse_proxy/config/nginx.rb', line 21

def updated?
  Digest::MD5.hexdigest(content) != @hash
end

#upstream ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 66

def upstream
  "upstream #{upstream_label} { server #{proxy.server.socket.unix.to_upstream} fail_timeout=0; }"
end

#upstream_label ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 84

def upstream_label
  "application_#{proxy.id}"
end

#write ⇒ Object 



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# File 'lib/reverse_proxy/config/nginx.rb', line 17

def write
  File.write(file, content) and updated! if updated?
end

#written? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/reverse_proxy/config/nginx.rb', line 28

def written?
  File.exists? file
end