Class: Vagrant

Inherits:
Object
  • Object
show all
Defined in:
lib/zergrush_vagrant/init.rb

Overview

give this class the name you want for your command zergrush_vagrant

Instance Method Summary collapse

Instance Method Details

#check_dependencies ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 249

def check_dependencies
    abort("ERROR: Vagrant not installed!") unless which("vagrant") != nil
    required_plugins = ["vagrant-aws", "vagrant-omnibus", "vagrant-berkshelf"]
    if /linux|arch/i === RbConfig::CONFIG['host_os']
        required_plugins.push("vagrant-libvirt")
    end

    required_plugins.each { |plugin|
        plugin_check_pid = Process.spawn("vagrant plugin list | grep #{plugin}")
        Process.wait(plugin_check_pid)

        if $?.exitstatus != 0
            puts "Installing #{plugin}"
            plugin_check_pid = Process.spawn("vagrant plugin install #{plugin}")
            Process.wait(plugin_check_pid)
            abort("ERROR: #{plugin} installation failed!") unless $?.exitstatus == 0
        end
    }
end

#clean(hive_location, task_name, task_hash, debug) ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 129

def clean hive_location, task_name, task_hash, debug
    check_dependencies
    puts("Cleaning task #{task_name} ...")

    renderer = Renderer.new(
        hive_location, 
        task_name, 
        task_hash)        
    renderer.render

    # run vagrant cleanup
    debug_string = (debug == true) ? " --debug" : ""
    
    last_defined_driveroption = nil

    for index in 0..task_hash["num_instances"] - 1

        # grab last defined driver options set, or keep the current one
        last_defined_driveroption = (task_hash["vm"]["driver"]["driveroptions"][index] == nil) ? last_defined_driveroption : task_hash["vm"]["driver"]["driveroptions"][index]

        cleanup_pid = Process.spawn(
            {
                "VAGRANT_CWD" => File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name),
                "VAGRANT_DEFAULT_PROVIDER" => last_defined_driveroption["providertype"]
            },
            "vagrant destroy zergling_#{index} --force#{debug_string}")
        Process.wait(cleanup_pid)
        abort("ERROR: vagrant failed!") unless $?.exitstatus == 0
    end

    last_defined_driveroption = nil
    
    # last explicitly defined vm instance. 
    last_defined_vm = nil

    for index in 0..task_hash["num_instances"] - 1
        # grab last defined driver options set, or keep the current one
        last_defined_driveroption = (task_hash["vm"]["driver"]["driveroptions"][index] == nil) ? last_defined_driveroption : task_hash["vm"]["driver"]["driveroptions"][index]

        # grab last defined vm instance, or keep the current one
        last_defined_vm = (task_hash["vm"]["instances"][index] == nil) ? last_defined_vm : task_hash["vm"]["instances"][index]
        
        boxname = Digest::SHA1.hexdigest "#{task_name}#{last_defined_driveroption["providertype"]}#{last_defined_vm["basebox"]}"
        cleanup_pid = Process.spawn(
            {
                "VAGRANT_CWD" => File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name)
            },
            "vagrant box remove #{boxname} #{last_defined_driveroption["providertype"]}#{debug_string}")
        Process.wait(cleanup_pid)
    end
end

#folder_schema ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 226

def folder_schema
    return File.open(File.join("#{File.dirname(__FILE__)}", "..", "..", "resources", "folders_schema.template"), 'r').read
end

#halt(hive_location, task_name, task_hash, debug) ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 181

def halt hive_location, task_name, task_hash, debug
    check_dependencies
    puts("Halting all vagrant virtual machines for task #{task_name} ...")
    
    renderer = Renderer.new(
        hive_location, 
        task_name, 
        task_hash)        
    renderer.render

    debug_string = (debug == true) ? " --debug" : ""  

    # halt all machines
    halt_pid = nil

    last_defined_driveroption = nil

    for index in 0..task_hash["num_instances"] - 1

        # grab last defined driver options set, or keep the current one
        last_defined_driveroption = (task_hash["vm"]["driver"]["driveroptions"][index] == nil) ? last_defined_driveroption : task_hash["vm"]["driver"]["driveroptions"][index]
        
        halt_pid = Process.spawn(
            {
                "VAGRANT_CWD" => File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name),
                "VAGRANT_DEFAULT_PROVIDER" => last_defined_driveroption["providertype"]
            },
            "vagrant halt zergling_#{index}#{debug_string}")
        Process.wait(halt_pid)
        abort("ERROR: vagrant halt failed on machine zergling_#{index}!") unless $?.exitstatus == 0
    end
end

#option_schema ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 222

def option_schema
    return File.open(File.join("#{File.dirname(__FILE__)}", "..", "..", "resources", "option_schema.template"), 'r').read
end

#port_schema ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 230

def port_schema
    return File.open(File.join("#{File.dirname(__FILE__)}", "..", "..", "resources", "ports_schema.template"), 'r').read
end

#rush(hive_location, task_name, task_hash, debug) ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 30

def rush hive_location, task_name, task_hash, debug
    check_dependencies
    puts ("Will perform task #{task_name} with contents:\n #{task_hash.ai}")

    renderer = Renderer.new(
        hive_location, 
        task_name, 
        task_hash)        
    renderer.render

    debug_string = (debug == true) ? " --debug" : ""                

    # last explicitly defined driver option set
    last_defined_driveroption = nil

    # bring up all of the VMs first.
    puts("Starting vagrant in #{File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name)}")
    for index in 0..task_hash["num_instances"] - 1

        # grab last defined driver options set, or keep the current one
        last_defined_driveroption = (task_hash["vm"]["driver"]["driveroptions"][index] == nil) ? last_defined_driveroption : task_hash["vm"]["driver"]["driveroptions"][index]

        create_pid = Process.spawn(
            {
                "VAGRANT_CWD" => File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name),
                "VAGRANT_DEFAULT_PROVIDER" => last_defined_driveroption["providertype"]
            },
            "vagrant up zergling_#{index} --no-provision#{debug_string}")
        Process.wait(create_pid)
        
        if $?.exitstatus != 0
            puts "Vagrant failed while creating one of the VMs. Will clean task #{task_name}:"
            clean(hive_location, task_name, task_hash, debug)
            abort("ERROR: vagrant failed!")
        end
    end

    last_defined_driveroption = nil
    puts("Running tasks in vagrant virtual machines...")
    # and provision them all at once (sort of)
    provisioners = Array.new
    provision_pid = nil
    for index in 0..task_hash["num_instances"] - 1
        # grab last defined driver options set, or keep the current one
        last_defined_driveroption = (task_hash["vm"]["driver"]["driveroptions"][index] == nil) ? last_defined_driveroption : task_hash["vm"]["driver"]["driveroptions"][index]

        provision_pid = Process.spawn(
            {
                "VAGRANT_CWD" => File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name),
                "VAGRANT_DEFAULT_PROVIDER" => last_defined_driveroption["providertype"]
            },
            "vagrant provision zergling_#{index}#{debug_string}")
        provisioners.push({:name => "zergling_#{index}", :pid => provision_pid})
    end

    # wait for everything to finish...
    errors = Array.new
    lock = Mutex.new
    provisioners.each { |provisioner| 
        Thread.new { 
            Process.wait(provisioner[:pid]); 
            lock.synchronize do
                errors.push(provisioner[:name]) unless $?.exitstatus == 0    
            end
        }.join 
    }

    # halt only the machines that are not marked as "keepalive"
    last_defined_driveroption = nil
    last_defined_vm = nil

    halt_pid = nil
    keepalive_left = false
    for index in 0..task_hash["num_instances"] - 1

        # grab last defined driver options set, or keep the current one
        last_defined_driveroption = (task_hash["vm"]["driver"]["driveroptions"][index] == nil) ? last_defined_driveroption : task_hash["vm"]["driver"]["driveroptions"][index]
        
        # grab last defined vm instance, or keep the current one
        last_defined_vm = (task_hash["vm"]["instances"][index] == nil) ? last_defined_vm : task_hash["vm"]["instances"][index]
        
        if last_defined_vm["keepalive"] != true
            halt_pid = Process.spawn(
                {
                    "VAGRANT_CWD" => File.join("#{hive_location}", "driver", task_hash["vm"]["driver"]["drivertype"], task_name),
                    "VAGRANT_DEFAULT_PROVIDER" => last_defined_driveroption["providertype"]
                },
                "vagrant halt zergling_#{index}#{debug_string}")
            Process.wait(halt_pid)
            abort("ERROR: vagrant halt failed on machine zergling_#{index}!") unless $?.exitstatus == 0
        else
            keepalive_left = true
            puts "zergling_#{index} is marked as keepalive, skipping halt..."
        end
    end
    abort("ERROR: Finished with errors in: #{errors.to_s}") unless errors.length == 0
    puts "Some instances were left running." unless keepalive_left == false
end

#snapshot(hive_location, task_name, task_hash, base) ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 214

def snapshot hive_location, task_name, task_hash, base
    abort("ERROR: Not implemented!")
end

#ssh_schema ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 234

def ssh_schema
    return File.open(File.join("#{File.dirname(__FILE__)}", "..", "..", "resources", "ssh_schema.template"), 'r').read
end

#task_schema ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 218

def task_schema
    return File.open(File.join("#{File.dirname(__FILE__)}", "..", "..", "resources", "tasks_schema.template"), 'r').read
end

#which(cmd) ⇒ Object 



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# File 'lib/zergrush_vagrant/init.rb', line 238

def which(cmd)
    exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
    ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
        exts.each { |ext|
        exe = File.join(path, "#{cmd}#{ext}")
        return exe if File.executable? exe
        }
    end
  return nil
end