Module: Flare::Tools::Common

Includes:
Util::Logging
Included in:
Flare::Test::Cluster, Flare::Tools::Cli::Activate, Flare::Tools::Cli::Balance, Flare::Tools::Cli::Down, Flare::Tools::Cli::Dump, Flare::Tools::Cli::Dumpkey, Flare::Tools::Cli::List, Flare::Tools::Cli::Master, Flare::Tools::Cli::Part, Flare::Tools::Cli::Reconstruct, Flare::Tools::Cli::Remove, Flare::Tools::Cli::Restore, Flare::Tools::Cli::Slave, Flare::Tools::Cli::Stats, Flare::Tools::Cli::Summary, Flare::Tools::Cli::Threads
Defined in:
lib/flare/tools/common.rb

Constant Summary collapse

NodeListHeader = 
[ ['%-32s', 'node'],
['%9s', 'partition'],
['%6s', 'role'],
['%6s', 'state'],
['%7s', 'balance'] ]
NodeListFormat = 
(NodeListHeader.map {|x| x[0]}.join(' '))

Instance Method Summary collapse

Methods included from Util::Logging

#debug, #error, #fatal, #info, logger, #puts, set_logger, #trace, #warn

Instance Method Details

#address_of_hostname(hostname) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 64

def address_of_hostname(hostname)
  Resolv.getaddress(hostname)
rescue Resolv::ResolvError
  hostname
end

#fetch_cluster(s) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 18

def fetch_cluster s
  Flare::Tools::Cluster.new(s.host, s.port, s.stats_nodes)
end

#hostname_of_address(ipaddr) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 70

def hostname_of_address(ipaddr)
  Resolv.getname(ipaddr)
rescue Resolv::ResolvError
  ipaddr
end

#nodekey_of(*args) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 40

def nodekey_of *args
  if args.size == 1
    args = if args[0].kind_of?(Array)
             args[0]
           elsif args[0].kind_of?(String)
             args[0].split(':')
           end
  end
  if args.size >= 2
    hostname, port = args
    if hostname.kind_of?(String) && port.kind_of?(String)
      if port.empty?
        port = Flare::Util::Constant::DefaultNodePort
        return "#{hostname}:#{port}"
      elsif /^\d+$/ =~ port
        return "#{hostname}:#{port}"
      end
    elsif hostname.kind_of?(String) && port.kind_of?(Integer)
      return "#{hostname}:#{port}"
    end
  end
  nil
end

#string_of_nodelist(nodes, opt = {}) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 83

def string_of_nodelist(nodes, opt = {})
  format = NodeListFormat+"\n"
  ret = format % NodeListHeader.map{|x| x[1]}.flatten
  nodes.each do |nodekey, node|
    if opt.empty? || opt.include?(nodekey)
      partition = if node['partition'] == "-1"
                    "-"
                  else
                    node['partition']
                  end
      ret += format % [
                       nodekey,
                       partition,
                       node['role'],
                       node['state'],
                       node['balance'],
                      ]
    end
  end
  ret
end

#user_confirmed(opt = { true => /^Y$/, false => /^N$/ }, &block) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 22

def user_confirmed opt = { true => /^Y$/, false => /^N$/ }, &block
  ret = nil
  while ret.nil?
    line = gets.chomp.upcase
    opt.each do |key,pattern|
      if patterns =~ line
        ret = key
        break
      end
    end
  end
  if block.nil?
    ret
  else
    block.call(ret)
  end
end

#wait_for_master_construction(index_server, nodekey, timeout, silent = false) ⇒ Object

s:IndexServer, nodekey:“hostname:port”, timeout(second):Integer -> state:String



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# File 'lib/flare/tools/common.rb', line 143

def wait_for_master_construction(index_server, nodekey, timeout, silent = false)
  cluster = Flare::Tools::Cluster.new(index_server.host, index_server.port, index_server.stats_nodes)
  master = cluster.node_stat(nodekey)
  partition = master['partition'].to_i
  m_hostname, m_port = cluster.master_in_partition(partition).split(':')
  m = Flare::Tools::Stats.open(m_hostname, m_port.to_i, timeout)
  start = Time.now
  while true
    cluster = Flare::Tools::Cluster.new(index_server.host, index_server.port, index_server.stats_nodes)
    master = cluster.node_stat(nodekey)
    stats_master = m.stats
    ts_diff = Time.now-start
    state_master = master['state'];
    role_master = master['role'];
    item_m = stats_master['curr_items'].to_i;
    eta = "n/a";
    unless silent
      STDERR.puts "%d (role = %s, state = %s) [ETA: %s sec (elapsed = %d sec)]" % [item_m, role_master, state_master, eta, ts_diff]
    end
    if role_master == "master" && state_master == "active"
      if partition != 0
        warn "The master should be ready after the reconstruction but it became active."
      end
      break
    end
    break if role_master == "master" && state_master == "ready"
    sleep 1
  end
  info "state is ready -> stop waiting" unless silent
  m.close
  state_master
end

#wait_for_servers(index_server, timeout = Flare::Util::Constant::DefaultTimeout, silent = false) ⇒ Object 



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# File 'lib/flare/tools/common.rb', line 176

def wait_for_servers(index_server, timeout = Flare::Util::Constant::DefaultTimeout, silent = false)
  index_server.stats_nodes.each do |nodekey, v|
    hostname, port = nodekey.split(':')
    is_alive = false
    while is_alive
      begin
        Flare::Tools::Node.open(hostname, port.to_i, 2) do |n|
          n.ping
          is_alize = true
        end
      rescue Errno::ECONNREFUSED
      rescue SocketError
      end
      sleep 1 unless is_alive
    end
  end
end

#wait_for_slave_construction(index_server, nodekey, timeout, silent = false) ⇒ Object

s:IndexServer, nodekey:“hostname:port”, timeout(second):Integer -> state:String



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# File 'lib/flare/tools/common.rb', line 106

def wait_for_slave_construction(index_server, nodekey, timeout, silent = false)
  cluster = Flare::Tools::Cluster.new(index_server.host, index_server.port, index_server.stats_nodes)
  slave = cluster.node_stat(nodekey)
  partition = slave['partition'].to_i
  m_hostname, m_port = cluster.master_in_partition(partition).split(':')
  s_hostname, s_port = nodekey.split(':')
  m = Flare::Tools::Stats.open(m_hostname, m_port.to_i, timeout)
  s = Flare::Tools::Stats.open(s_hostname, s_port.to_i, timeout)
  start = Time.now
  while true
    cluster = Flare::Tools::Cluster.new(index_server.host, index_server.port, index_server.stats_nodes)
    slave = cluster.node_stat(nodekey)
    stats_master = m.stats
    stats_slave = s.stats
    ts_diff = Time.now-start
    state_slave = slave['state'];
    role_slave = slave['role'];
    item_m = stats_master['curr_items'].to_i;
    item_s = stats_slave['curr_items'].to_i;
    eta = if ts_diff > 0 && item_s > 0
            ((item_m - item_s) / (item_s / ts_diff)).to_i;
            else
            "n/a";
          end
    unless silent
      STDERR.puts "%d/%d (role = %s, state = %s) [ETA: %s sec (elapsed = %d sec)]" % [item_s, item_m, role_slave, state_slave, eta, ts_diff]
    end
    break if role_slave == "slave" && state_slave == "active"
    sleep 1
  end
  info "state is active -> stop waiting" unless silent
  m.close
  s.close
  state_slave
end