Class: Nodo::Core

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/nodo/core.rb

Constant Summary collapse

SOCKET_NAME = 
'nodo.sock'
DEFINE_METHOD = 
'__nodo_define_class__'.freeze
EVALUATE_METHOD = 
'__nodo_evaluate__'.freeze
GC_METHOD = 
'__nodo_gc__'.freeze
INTERNAL_METHODS = 
[DEFINE_METHOD, EVALUATE_METHOD, GC_METHOD].freeze
LAUNCH_TIMEOUT = 
5
ARRAY_CLASS_ATTRIBUTES = 
%i[dependencies constants scripts].freeze
HASH_CLASS_ATTRIBUTES = 
%i[functions].freeze
CLASS_ATTRIBUTES = 
(ARRAY_CLASS_ATTRIBUTES + HASH_CLASS_ATTRIBUTES).freeze
@@node_pid = 
nil
@@tmpdir = 
nil
@@mutex = 
Mutex.new
@@exiting = 
nil

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Core

Returns a new instance of Core.

Raises:



144
145
146
147
148
149
150
151
 
# File 'lib/nodo/core.rb', line 144

def initialize
  raise ClassError, :new if self.class == Nodo::Core
  @@mutex.synchronize do
    ensure_process_is_spawned
    wait_for_socket
    ensure_class_is_defined
  end
end

Class Attribute Details

.class_defined ⇒ Object

Returns the value of attribute class_defined.



21
22
23
 
# File 'lib/nodo/core.rb', line 21

def class_defined
  @class_defined
end

Class Method Details

.class_defined? ⇒ Boolean

Returns:

  • (Boolean) 


33
34
35
 
# File 'lib/nodo/core.rb', line 33

def class_defined?
  !!class_defined
end

.clsid ⇒ Object 



37
38
39
 
# File 'lib/nodo/core.rb', line 37

def clsid
  name || "Class:0x#{object_id.to_s(0x10)}"
end

.generate_class_code ⇒ Object 



83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/nodo/core.rb', line 83

def generate_class_code
  <<~JS
    (() => {
      const __nodo_klass__ = { nodo: global.nodo };
      #{dependencies.map(&:to_js).join}
      #{constants.map(&:to_js).join}
      #{functions.values.map(&:to_js).join}
      #{scripts.map(&:to_js).join}
      return __nodo_klass__;
    })()
  JS
end

.generate_core_code ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
 
# File 'lib/nodo/core.rb', line 60

def generate_core_code
  <<~JS
    global.nodo = require(#{nodo_js});

    const socket = process.argv[1];
    if (!socket) {
      process.stderr.write('Socket path is required\\n');
      process.exit(1);
    }

    process.title = `nodo-core ${socket}`;

    const shutdown = () => {
      nodo.core.close(() => { process.exit(0) });
    };

    // process.on('SIGINT', shutdown);
    process.on('SIGTERM', shutdown);

    nodo.core.run(socket);
  JS
end

.inherited(subclass) ⇒ Object 



23
24
25
26
27
 
# File 'lib/nodo/core.rb', line 23

def inherited(subclass)
  CLASS_ATTRIBUTES.each do |attr|
    subclass.send "#{attr}=", send(attr).dup
  end
end

.instance ⇒ Object 



29
30
31
 
# File 'lib/nodo/core.rb', line 29

def instance
  @instance ||= new
end

Instance Method Details

#evaluate(code) ⇒ Object 



153
154
155
156
 
# File 'lib/nodo/core.rb', line 153

def evaluate(code)
  ensure_context_is_defined
  call_js_method(EVALUATE_METHOD, code)
end