Class: RuboCop::Server::Cache Private

Inherits:
Object
  • Object
show all
Defined in:
lib/rubocop/server/cache.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Caches the states of server process.

Constant Summary collapse

GEMFILE_NAMES =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

%w[Gemfile gems.rb].freeze

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.cache_root_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



24
25
26
 
# File 'lib/rubocop/server/cache.rb', line 24

def cache_root_path
  @cache_root_path
end

Class Method Details

.acquire_lock ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



116
117
118
119
120
121
122
123
124
 
# File 'lib/rubocop/server/cache.rb', line 116

def acquire_lock
  lock_file = File.open(lock_path, File::CREAT)
  # flock returns 0 if successful, and false if not.
  flock_result = lock_file.flock(File::LOCK_EX | File::LOCK_NB)
  yield flock_result != false
ensure
  lock_file.flock(File::LOCK_UN)
  lock_file.close
end

.cache_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



50
51
52
53
54
55
56
57
58
 
# File 'lib/rubocop/server/cache.rb', line 50

def cache_path
  cache_root_dir = if cache_root_path
                     File.join(cache_root_path, 'rubocop_cache')
                   else
                     cache_root_dir_from_config
                   end

  File.expand_path(File.join(cache_root_dir, 'server'))
end

.cache_root_dir_from_config ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/rubocop/server/cache.rb', line 60

def cache_root_dir_from_config
  CacheConfig.root_dir do
    # `RuboCop::ConfigStore` has heavy dependencies, this is a lightweight implementation
    # so that only the necessary `CacheRootDirectory` can be obtained.
    require 'yaml'
    config_path = ConfigFinder.find_config_path(Dir.pwd)

    require 'erb'
    file_contents = File.read(config_path)
    yaml_code = ERB.new(file_contents).result

    config_yaml = YAML.safe_load(yaml_code, permitted_classes: [Regexp, Symbol])

    # For compatibility with Ruby 3.0 or lower.
    if Gem::Version.new(Psych::VERSION) < Gem::Version.new('4.0.0')
      config_yaml == false ? nil : config_yaml
    end

    config_yaml&.dig('AllCops', 'CacheRootDirectory')
  end
end

.dir ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



44
45
46
47
48
 
# File 'lib/rubocop/server/cache.rb', line 44

def dir
  Pathname.new(File.join(cache_path, project_dir_cache_key)).tap do |d|
    d.mkpath unless d.exist?
  end
end

.lock_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



94
95
96
 
# File 'lib/rubocop/server/cache.rb', line 94

def lock_path
  dir.join('lock')
end

.pid_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



90
91
92
 
# File 'lib/rubocop/server/cache.rb', line 90

def pid_path
  dir.join('pid')
end

.pid_running? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


110
111
112
113
114
 
# File 'lib/rubocop/server/cache.rb', line 110

def pid_running?
  Process.kill(0, pid_path.read.to_i) == 1
rescue Errno::ESRCH, Errno::ENOENT
  false
end

.port_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



82
83
84
 
# File 'lib/rubocop/server/cache.rb', line 82

def port_path
  dir.join('port')
end

.project_dir ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Searches for Gemfile or gems.rb in the current dir or any parent dirs



27
28
29
30
31
32
33
34
35
36
37
38
 
# File 'lib/rubocop/server/cache.rb', line 27

def project_dir
  current_dir = Dir.pwd
  while current_dir != '/'
    return current_dir if GEMFILE_NAMES.any? do |gemfile|
      File.exist?(File.join(current_dir, gemfile))
    end

    current_dir = File.expand_path('..', current_dir)
  end
  # If we can't find a Gemfile, just use the current directory
  Dir.pwd
end

.project_dir_cache_key ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



40
41
42
 
# File 'lib/rubocop/server/cache.rb', line 40

def project_dir_cache_key
  @project_dir_cache_key ||= project_dir[1..].tr('/', '+')
end

.status_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



98
99
100
 
# File 'lib/rubocop/server/cache.rb', line 98

def status_path
  dir.join('status')
end

.stderr_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



106
107
108
 
# File 'lib/rubocop/server/cache.rb', line 106

def stderr_path
  dir.join('stderr')
end

.token_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



86
87
88
 
# File 'lib/rubocop/server/cache.rb', line 86

def token_path
  dir.join('token')
end

.version_path ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



102
103
104
 
# File 'lib/rubocop/server/cache.rb', line 102

def version_path
  dir.join('version')
end

.write_pid_file ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



131
132
133
134
135
136
 
# File 'lib/rubocop/server/cache.rb', line 131

def write_pid_file
  pid_path.write(Process.pid)
  yield
ensure
  dir.rmtree
end

.write_port_and_token_files(port:, token:) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



126
127
128
129
 
# File 'lib/rubocop/server/cache.rb', line 126

def write_port_and_token_files(port:, token:)
  port_path.write(port)
  token_path.write(token)
end

.write_status_file(status) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



138
139
140
 
# File 'lib/rubocop/server/cache.rb', line 138

def write_status_file(status)
  status_path.write(status)
end

.write_version_file(version) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



142
143
144
 
# File 'lib/rubocop/server/cache.rb', line 142

def write_version_file(version)
  version_path.write(version)
end