Class: DeisInteractive::Rails::Exec

Inherits:
Base
  • Object
show all
Defined in:
lib/deis-interactive/rails/exec.rb

Instance Attribute Summary collapse

Attributes inherited from Base

#app, #process

Instance Method Summary collapse

Methods inherited from Base

#pod_ids, #processes_pattern

Constructor Details

#initialize(app, cmd, params) ⇒ Exec

Returns a new instance of Exec.



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# File 'lib/deis-interactive/rails/exec.rb', line 10

def initialize(app, cmd, params)
  super(app, ENV['DEIS_CONSOLE_PROCESS'] || "web")
  @cmd = cmd
  @params = params
end

Instance Attribute Details

#cmd ⇒ Object (readonly)

Returns the value of attribute cmd.



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# File 'lib/deis-interactive/rails/exec.rb', line 7

def cmd
  @cmd
end

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/deis-interactive/rails/exec.rb', line 8

def params
  @params
end

Instance Method Details

#args ⇒ Object 



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# File 'lib/deis-interactive/rails/exec.rb', line 16

def args
  result = [cmd]
  if params
    result += params
  end
  result
end

#escaped_args ⇒ Object 



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# File 'lib/deis-interactive/rails/exec.rb', line 24

def escaped_args
  args.map do |arg|
    Shellwords.escape(arg)
  end.join(" ")
end

#perform ⇒ Object 



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# File 'lib/deis-interactive/rails/exec.rb', line 30

def perform
  puts "Execute #{args} on #{pod_id}"
  exec "kubectl exec -it --namespace #{app} #{pod_id} -- bash -c #{escaped_args}"
end

#pod_id ⇒ Object 



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# File 'lib/deis-interactive/rails/exec.rb', line 35

def pod_id
  @pod_id ||= (
    sample_pod_id = pod_ids.sample
    if (sample_pod_id.nil?)
      raise "Error. No pod of #{process} is found. kubectl won't be able to attach to run a console session"
    end
    sample_pod_id
  )
end