Class: OsCtl::Cli::Top::Model

Inherits:
Object
  • Object
show all
Defined in:
lib/osctl/cli/top/model.rb

Constant Summary collapse

MODES = 
%i[realtime cumulative].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(enable_iostat: true) ⇒ Model

Returns a new instance of Model.



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# File 'lib/osctl/cli/top/model.rb', line 10

def initialize(enable_iostat: true)
  @mutex = Mutex.new
  @monitor = Top::Monitor.new(self)
  @iostat = enable_iostat ? OsCtl::Lib::Zfs::IOStat.new : nil
  @host = Top::Host.new(iostat)
  @mode = :realtime

  @monitor.subscribe
  open
end

Instance Attribute Details

#client ⇒ Object (readonly, protected)

Returns the value of attribute client.



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# File 'lib/osctl/cli/top/model.rb', line 202

def client
  @client
end

#containers ⇒ Object (readonly)

Returns the value of attribute containers.



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# File 'lib/osctl/cli/top/model.rb', line 7

def containers
  @containers
end

#host ⇒ Object (readonly, protected)

Returns the value of attribute host.



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# File 'lib/osctl/cli/top/model.rb', line 202

def host
  @host
end

#index ⇒ Object (readonly, protected)

Returns the value of attribute index.



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# File 'lib/osctl/cli/top/model.rb', line 202

def index
  @index
end

#iostat ⇒ Object (readonly, protected)

Returns the value of attribute iostat.



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# File 'lib/osctl/cli/top/model.rb', line 202

def iostat
  @iostat
end

#mode ⇒ Object

Returns the value of attribute mode.



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# File 'lib/osctl/cli/top/model.rb', line 8

def mode
  @mode
end

#monitor ⇒ Object (readonly, protected)

Returns the value of attribute monitor.



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# File 'lib/osctl/cli/top/model.rb', line 202

def monitor
  @monitor
end

#nproc ⇒ Object (readonly, protected)

Returns the value of attribute nproc.



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# File 'lib/osctl/cli/top/model.rb', line 202

def nproc
  @nproc
end

#subsystems ⇒ Object (readonly, protected)

Returns the value of attribute subsystems.



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# File 'lib/osctl/cli/top/model.rb', line 202

def subsystems
  @subsystems
end

Instance Method Details

#add_ct(pool, id) ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 151

def add_ct(pool, id)
  ct = client.cmd_data!(:ct_show, pool:, id:)
  ct = Top::Container.new(ct)
  ct.netifs = client.cmd_data!(
    :netif_list,
    id:,
    pool:
  ).map do |netif_attrs|
    Top::Container::NetIf.new(netif_attrs)
  end

  sync do
    containers << ct
    index << ct
  end
rescue OsCtl::Client::Error
  raise "Container #{pool}:#{id} announced, but not found"
end

#add_ct_netif(ct, name) ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 185

def add_ct_netif(ct, name)
  attrs = client.cmd_data!(:netif_show, pool: ct.pool, id: ct.id, name:)
  sync { ct.netifs << Top::Container::NetIf.new(attrs) }
rescue OsCtl::Client::Error
  raise "Unable to find netif #{name} for container #{ct.pool}:#{ct.id}"
end

#add_pool(pool) ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 141

def add_pool(pool)
  host.pools << pool
  iostat.add_pool(pool) if iostat
end

#calc_cpu_usage(part, total) ⇒ Object (protected) 



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# File 'lib/osctl/cli/top/model.rb', line 237

def calc_cpu_usage(part, total)
  if part < 0
    0.0
  else
    part.to_f / total * 100 * nproc
  end
end

#calc_host_cpu_usage(cpu) ⇒ Object (protected) 



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# File 'lib/osctl/cli/top/model.rb', line 245

def calc_host_cpu_usage(cpu)
  ret = {}

  cpu.each_pair do |k, v|
    ret[k] = v.to_f / cpu.total * 100
  end

  ret
end

#data ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 64

def data
  return {} unless host.setup?

  mem = OsCtl::Lib::MemInfo.new
  lavg = OsCtl::Lib::LoadAvg.new

  host_result = host.result(mode, mem, lavg)
  host_cpu = host.cpu_result
  host_zfs = host.zfs_result
  sum_ct_cpu_hz = 0
  cts = []

  sync do
    containers.each do |ct|
      next if !ct.running? || !ct.setup?

      ct_result = ct.result(mode)
      update_host_result(host_result, ct_result)

      ct_lavg = @ct_lavgs[ct.ident]

      ct_data = {
        pool: ct.pool,
        id: ct.id,
        cpu_package_inuse: ct.cpu_package_inuse,
        init_pid: ct.init_pid,
        loadavg: ct_lavg ? ct_lavg.averages : [0.0, 0.0, 0.0]
      }.merge(ct_result)

      if mode == :realtime
        ct_cpu_hz = ct_result[:cpu_user_hz] + ct_result[:cpu_system_hz]
        sum_ct_cpu_hz += ct_cpu_hz

        ct_data.update(
          cpu_usage: calc_cpu_usage(ct_cpu_hz, host_cpu.total)
        )
      end

      cts << ct_data
    end
  end

  host_data = {
    id: host.id,
    loadavg: lavg.to_a
  }.merge(host_result)

  if mode == :realtime
    host_data.update(
      cpu_usage: calc_cpu_usage(host_cpu.total_used - sum_ct_cpu_hz, host_cpu.total)
    )
  end

  cts << host_data

  {
    cpu: calc_host_cpu_usage(host_cpu),
    loadavg: lavg.to_a,
    memory: {
      total: mem.total * 1024,
      used: mem.used * 1024,
      free: mem.free * 1024,
      buffers: mem.buffers * 1024,
      cached: mem.cached * 1024,
      swap_total: mem.swap_total * 1024,
      swap_used: mem.swap_used * 1024,
      swap_free: mem.swap_free * 1024
    },
    zfs: host_zfs,
    containers: cts
  }
end

#find_ct(pool, id) ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 177

def find_ct(pool, id)
  sync { index["#{pool}:#{id}"] }
end

#has_ct?(pool, id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctl/cli/top/model.rb', line 181

def has_ct?(pool, id)
  !find_ct(pool, id).nil?
end

#has_pool?(pool) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctl/cli/top/model.rb', line 137

def has_pool?(pool)
  host.pools.include?(pool)
end

#iostat_enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctl/cli/top/model.rb', line 21

def iostat_enabled?
  !iostat.nil?
end

#measure ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 42

def measure
  host.measure(subsystems)

  sync do
    containers.each do |ct|
      next unless ct.running?

      begin
        ct.measure(host, subsystems)
      rescue Top::Measurement::Error
        ct.state = :error
      end
    end

    begin
      @ct_lavgs = OsCtl::Lib::LoadAvgReader.read_for(containers)
    rescue StandardError
      @ct_lavgs = {}
    end
  end
end

#open ⇒ Object (protected) 



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# File 'lib/osctl/cli/top/model.rb', line 204

def open
  @client = OsCtl::Client.new
  @client.open
  @subsystems = client.cmd_data!(:group_cgsubsystems) if OsCtl::Lib::CGroup.v1?
  @index = OsCtl::Lib::Index.new { |ct| "#{ct.pool}:#{ct.id}" }
  @containers = client.cmd_data!(:ct_list).map do |ct_attrs|
    ct = Top::Container.new(ct_attrs)
    index << ct
    ct
  end

  client.cmd_data!(:netif_list).each do |netif_attrs|
    ct = index["#{netif_attrs[:pool]}:#{netif_attrs[:ctid]}"]
    next if ct.nil?

    ct.netifs << Top::Container::NetIf.new(netif_attrs)
  end
end

#remove_ct(ct) ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 170

def remove_ct(ct)
  sync do
    containers.delete(ct)
    index.delete(ct)
  end
end

#remove_pool(pool) ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 146

def remove_pool(pool)
  host.pools.delete(pool)
  iostat.remove_pool(pool) if iostat
end

#setup ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 25

def setup
  client.cmd_data!(:pool_list).each { |v| host.pools << v[:name] }
  monitor.start

  if iostat
    iostat.pools = host.pools
    iostat.start
  end

  @nproc = `nproc`.strip.to_i
  measure
end

#stop ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 38

def stop
  iostat.stop if iostat
end

#sync ⇒ Object 



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# File 'lib/osctl/cli/top/model.rb', line 192

def sync(&)
  if @mutex.owned?
    yield
  else
    @mutex.synchronize(&)
  end
end

#update_host_result(host_result, ct_result) ⇒ Object (protected) 



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# File 'lib/osctl/cli/top/model.rb', line 223

def update_host_result(host_result, ct_result)
  ct_result.each do |k, v|
    if v.is_a?(Hash)
      host_result[k] = update_host_result(host_result[k], v)

    else
      host_result[k] -= v
      host_result[k] = 0 if host_result[k] < 0
    end
  end

  host_result
end