Module: CollinsShell::Util

Included in:
Asset, AssetType, Cli, IpAddress, Ipmi, Provision, State, Tag
Defined in:
lib/collins_shell/util.rb,
lib/collins_shell/util/asset_stache.rb

Defined Under Namespace

Classes: AssetStache

Constant Summary collapse

SIZABLE_ATTRIBUTES = 
[:memory_size_total, :disk_storage_total]

Instance Method Summary collapse

Instance Method Details

#asset_exec(asset, execs, confirm = true, threads = 1) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 54

def asset_exec asset, execs, confirm = true, threads = 1
  return unless execs
  mustache = CollinsShell::Util::AssetStache.new asset
  rendered = mustache.render "/bin/bash -c '#{execs}'"
  say_status("exec", rendered, :red)
  require_yes("Running on #{asset.tag}. ARE YOU SURE?", :red) if confirm
  if threads < 2 then
    system(rendered)
  else
    run_command_in_thread(rendered, threads)
  end
end

#asset_get(tag, options) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 115

def asset_get tag, options
  call_collins get_collins_client, "get asset" do |client|
    as_asset = Collins::Asset.new(tag)
    as_asset.location = options.remote
    asset = client.get as_asset
  end
end

#call_collins(client, operation, &block) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 10

def call_collins client, operation, &block
  begin
    block.call(client)
  rescue SystemExit => e
  end
end

#finalize_exec ⇒ Object

Should be called after asset_exec



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# File 'lib/collins_shell/util.rb', line 68

def finalize_exec
  thread_mgr.threads.each(&:join)
end

#format_asset_tags(asset, tags) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 136

def format_asset_tags asset, tags
  tags.map do |tag|
    if tag.to_s =~ /^ipmi_(.*)/ then
      asset.ipmi.send($1.to_sym)
    elsif tag.to_s =~ /^addresses_(.*)/ then
      result = asset.addresses.select do |a|
        a.pool.upcase == $1.upcase
      end
      format_asset_value result
    elsif tag.to_s.split('.').length == 2 then
      o, m = tag.to_s.split('.')
      result = asset.send(o.to_sym)
      if result.nil? then
        "nil"
      else
        format_asset_value result.send(m.to_sym)
      end
    elsif tag == :url then
      config = get_collins_config
      " #{config[:host]}/asset/#{asset.tag}"
    else
      result = asset.send(tag.to_sym)
      format_asset_value result
    end
  end.join(',')
end

#format_asset_value(value) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 163

def format_asset_value value
  if is_array? value then
    value.map {|v| format_asset_value v}
  elsif value.is_a?(Collins::Address) then
    [:address,:gateway,:netmask].map {|s| value.send(s)}.join('|')
  else
    value.to_s
  end
end

#get_selector(selector, tags, size, remote = false) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 17

def get_selector selector, tags, size, remote = false
  asset_params = ::Collins::Asset::Find.to_a.inject({}) {|res,el| res.update(el.to_s.upcase => el)}
  selector = symbolize_hash(selector).inject({}) do |result, (k,v)|
    upcase_key = k.to_s.upcase
    if asset_params.key?(upcase_key) then # normalized reserved params
      corrected_key = asset_params[upcase_key]
      if ::Collins::Asset::Find::DATE_PARAMS.include?(corrected_key) then
        result[corrected_key.to_sym] = ::Collins::Asset.format_date_string(v)
      else
        result[corrected_key.to_sym] = v
      end
    elsif upcase_key == k.to_s then # respect case
      result[k] = v
    else # otherwise downcase
      result[k.downcase] = v
    end
    result
  end
  if not selector.include?(:operation) then
    selector.update(:operation => 'and')
  end
  if not selector.include?(:remoteLookup) and remote then
    selector.update(:remoteLookup => remote.to_s)
  end
  if not selector.include?(:size) and size then
    selector.update(:size => size)
  end
  selector.update(:details => true) if is_array?(tags)
  CollinsShell::Util::SIZABLE_ATTRIBUTES.each do |attrib|
    attrib_value = selector[attrib]
    if attrib_value && attrib_value.to_s.is_disk_size? then
      selector.update(attrib => attrib_value.to_s.to_bytes)
    end
  end
  selector
end

#is_array?(tags) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/collins_shell/util.rb', line 173

def is_array? tags
  tags && tags.is_a?(Array) && tags.length > 0
end

#print_find_results(assets, tags, options = {}) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 123

def print_find_results assets, tags, options = {}
  tags = [:tag,:status,:type,:created,:updated,:location] if not is_array?(tags)
  if options[:url] then
    tags << :url
  end
  if options[:header] then
    puts(tags.join(','))
  end
  [assets].flatten.each do |asset|
    puts format_asset_tags(asset, tags)
  end
end

#run_command_in_thread(syscmd, thread_count) ⇒ Object

Parameters:

  • syscmd (String) —

    The system command to execute

  • thread_count (Fixnum) —

    The numbers of threads to allow running at one time



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# File 'lib/collins_shell/util.rb', line 88

def run_command_in_thread syscmd, thread_count
  if thread_mgr.threads.size > thread_count then
    thread_mgr.threads.each(&:join)
    thread_mgr.threads.clear
  else
    thread_mgr.threads << Thread.new(syscmd) do |cmd|
      begin
        stdin, stdout, stderr, thread = Open3.popen3(cmd)
        stdin.close
        o, e = [stdout, stderr].map {|p| begin p.read ensure p.close end}
        unless o.empty? then
          say_status("stdout: #{cmd}", o, :green)
        end
        unless e.empty? then
          say_status("stderr: #{cmd}", e, :red)
        end
        if thread then
          Process.kill('TERM', thread.pid) rescue nil
          thread.kill unless nil
        end
      rescue Exception => e
        say_status("exception: #{cmd}", e.to_s, :red)
      end
    end
  end
end

#say_status(status, message, log_status = true) ⇒ Object 



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# File 'lib/collins_shell/util.rb', line 80

def say_status(status, message, log_status=true)
  thread_mgr.lock.synchronize {
    super
  }
end

#thread_mgr ⇒ Object

Wraps open threads and provides a synchronized output buffer for concurrently writing output



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# File 'lib/collins_shell/util.rb', line 73

def thread_mgr
  @_thread_mgr ||= OpenStruct.new({
    :threads => [],
    :lock => Mutex.new
  })
end