Class: Jets::PolyFun::NodeExecutor

Inherits:
BaseExecutor show all
Defined in:
lib/jets/poly_fun/node_executor.rb

Instance Method Summary collapse

Methods inherited from BaseExecutor

#cleanup, #copy_src_to_temp, #create_tmpdir, #handler, #initialize, #lambda_executor_script, #run, #run_lambda_executor, #write

Constructor Details

This class inherits a constructor from Jets::PolyFun::BaseExecutor

Instance Method Details

#async_code ⇒ Object 



26
27
28
29
30
31
32
33
34
35
 
# File 'lib/jets/poly_fun/node_executor.rb', line 26

def async_code
  "var event = process.argv[2]\nevent = JSON.parse(event)\nvar context = {}\n\nvar app = require(\"./\#{@task.meth}.js\")\napp.\#{handler}(event, context).then(resp => console.log(JSON.stringify(resp)))\n"
end

#async_syntax? ⇒ Boolean

docs.aws.amazon.com/lambda/latest/dg/nodejs-prog-model-handler.html

Returns:

  • (Boolean) 


20
21
22
23
24
 
# File 'lib/jets/poly_fun/node_executor.rb', line 20

def async_syntax?
  app_path = Jets.root + @task.handler_path.sub('handlers/', 'app/')
  source_code = IO.read(app_path)
  source_code.match(/=\s*async.*\(/)
end

#callback_code ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/jets/poly_fun/node_executor.rb', line 38

def callback_code
  "function callback(error, response) {\nvar text = JSON.stringify(response)\nconsole.log(text)\n}\n\nvar event = process.argv[2]\nevent = JSON.parse(event)\nvar context = {}\n\nvar app = require(\"./\#{@task.meth}.js\")\nvar resp = app.\#{handler}(event, context, callback)\n"
end

#code ⇒ Object

Code for wrapper script that mimics lambda execution. Wrapper script usage:

node WRAPPER_SCRIPT EVENT

Example:

node /tmp/jets/demo/executor/20180804-12816-imqb9/lambda_executor.js '{}'



11
12
13
14
15
16
17
 
# File 'lib/jets/poly_fun/node_executor.rb', line 11

def code
  if async_syntax?
    async_code
  else
    callback_code
  end
end