Class: EngineYard::VisualVM::CLI

Inherits:

Thor

• Object
• Thor
• EngineYard::VisualVM::CLI

Includes:

EY::UtilityMethods, Helpers

Defined in:

lib/engineyard-visualvm/cli.rb

Constant Summary

Constants included from Helpers

Helpers::STARTING_PORT

Instance Method Summary

• #help(task = nil, *args) ⇒ Object
• #jvmargs ⇒ Object
• #start ⇒ Object
• #url ⇒ Object
• #version ⇒ Object

Methods included from Helpers

#agent_jar_path, #environment, #fetch_public_ip, #find_executable?, #find_tools_jar, #host, included, #jmx_service_url, #jvm_arguments, next_free_port, #next_free_port, #port, port_available?, #socks_proxy?, #ssh?, #ssh_host, #user

Instance Method Details

#help(task = nil, *args) ⇒ Object

# File 'lib/engineyard-visualvm/cli.rb', line 214

def help(task = nil, *args)
  unless task
    puts "usage: ey-visualvm <task> [options|arguments]"
    puts "Make JMX and VisualVM more accessible to your server-side JVM."
    puts
  end
  super
end

#jvmargs ⇒ Object

# File 'lib/engineyard-visualvm/cli.rb', line 152

def jvmargs
  puts jvm_arguments
end

#start ⇒ Object

# File 'lib/engineyard-visualvm/cli.rb', line 171

def start
  unless find_executable?("jvisualvm")
    warn "Could not find \`jvisualvm\'; do you need to install the JDK?"
    exit 1
  end

  visualvm_args = []

  if ssh?
    ssh_dest = ssh_host
    unless system "ssh #{ssh_dest} true"
      warn "Error establishing ssh connection; make sure you can `ssh #{ssh_dest}'."
      exit 3
    end

    if socks_proxy?
      proxy_port = next_free_port
      visualvm_args += ["-J-Dnetbeans.system_socks_proxy=localhost:#{proxy_port}", "-J-Djava.net.useSystemProxies=true"]
      @ssh_process = ChildProcess.build("ssh", "-ND", proxy_port.to_s, ssh_dest)
    else
      server_host, server_port = host, port
      @host, @port = "localhost", next_free_port
      @ssh_process = ChildProcess.build("ssh", "-NL", "#{@port}:#{@host}:#{server_port}", ssh_dest)
    end

    @ssh_process.start
  end

  visualvm_args += ["--openjmx", jmx_service_url.to_s]
  visualvm = ChildProcess.build("jvisualvm", *visualvm_args)
  visualvm.start

  loop do
    visualvm.exited? && break
    sleep 1
  end

  @ssh_process.stop if @ssh_process
rescue EY::Error => e
  warn e.message
  exit 2
end

#url ⇒ Object

# File 'lib/engineyard-visualvm/cli.rb', line 157

def url
  puts jmx_service_url
end

#version ⇒ Object

# File 'lib/engineyard-visualvm/cli.rb', line 162

def version
  puts "ey-visualvm version #{EngineYard::VisualVM::VERSION}"
end