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)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Model

Returns a new instance of Model



11
12
13
14
15
16
17
18
19
 
# File 'lib/osctl/cli/top/model.rb', line 11

def initialize
  @mutex = Mutex.new
  @monitor = Top::Monitor.new(self)
  @host = Top::Host.new
  @mode = :realtime

  @monitor.subscribe
  open
end

Instance Attribute Details

#client ⇒ Object (readonly, protected)

Returns the value of attribute client



153
154
155
 
# File 'lib/osctl/cli/top/model.rb', line 153

def client
  @client
end

#containers ⇒ Object (readonly)

Returns the value of attribute containers



8
9
10
 
# File 'lib/osctl/cli/top/model.rb', line 8

def containers
  @containers
end

#host ⇒ Object (readonly, protected)

Returns the value of attribute host



153
154
155
 
# File 'lib/osctl/cli/top/model.rb', line 153

def host
  @host
end

#index ⇒ Object (readonly, protected)

Returns the value of attribute index



153
154
155
 
# File 'lib/osctl/cli/top/model.rb', line 153

def index
  @index
end

#mode ⇒ Object

Returns the value of attribute mode



9
10
11
 
# File 'lib/osctl/cli/top/model.rb', line 9

def mode
  @mode
end

#monitor ⇒ Object (readonly, protected)

Returns the value of attribute monitor



153
154
155
 
# File 'lib/osctl/cli/top/model.rb', line 153

def monitor
  @monitor
end

#nproc ⇒ Object (readonly, protected)

Returns the value of attribute nproc



153
154
155
 
# File 'lib/osctl/cli/top/model.rb', line 153

def nproc
  @nproc
end

#subsystems ⇒ Object (readonly, protected)

Returns the value of attribute subsystems



153
154
155
 
# File 'lib/osctl/cli/top/model.rb', line 153

def subsystems
  @subsystems
end

Instance Method Details

#add_ct(pool, id) ⇒ Object 



101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
 
# File 'lib/osctl/cli/top/model.rb', line 101

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

  sync do
    containers << ct
    index << ct
  end

rescue OsCtl::Client::Error
  fail "Container #{pool}:#{id} announced, but not found"
end

#add_ct_netif(ct, name) ⇒ Object 



136
137
138
139
140
141
142
 
# File 'lib/osctl/cli/top/model.rb', line 136

def add_ct_netif(ct, name)
  attrs = client.cmd_data!(:netif_show, pool: ct.pool, id: ct.id, name: name)
  sync { ct.netifs << Top::Container::NetIf.new(attrs) }

rescue OsCtl::Client::Error
  fail "Unable to find netif #{name} for container #{ct.pool}:#{ct.id}"
end

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



187
188
189
 
# File 'lib/osctl/cli/top/model.rb', line 187

def calc_cpu_usage(part, total)
  part.to_f / total * 100 * nproc
end

#calc_host_cpu_usage(cpu) ⇒ Object (protected) 



191
192
193
194
195
196
197
198
199
 
# File 'lib/osctl/cli/top/model.rb', line 191

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 



43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/osctl/cli/top/model.rb', line 43

def data
  return [] unless host.setup?

  mem = Top::MemInfo.new
  host_result = host.result(mode, mem)
  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_data = {pool: ct.pool, id: ct.id}.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}.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),
    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_cached * 1024,
      swap_free: mem.swap_free * 1024,
    },
    zfs: host_zfs,
    containers: cts,
  }
end

#find_ct(pool, id) ⇒ Object 



128
129
130
 
# File 'lib/osctl/cli/top/model.rb', line 128

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

#has_ct?(pool, id) ⇒ Boolean

Returns:

  • (Boolean) 


132
133
134
 
# File 'lib/osctl/cli/top/model.rb', line 132

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

#measure ⇒ Object 



27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/osctl/cli/top/model.rb', line 27

def measure
  host.measure(subsystems)

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

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

#open ⇒ Object (protected) 



155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
 
# File 'lib/osctl/cli/top/model.rb', line 155

def open
  @client = OsCtl::Client.new
  @client.open
  @subsystems = client.cmd_data!(:group_cgsubsystems)
  @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 



121
122
123
124
125
126
 
# File 'lib/osctl/cli/top/model.rb', line 121

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

#setup ⇒ Object 



21
22
23
24
25
 
# File 'lib/osctl/cli/top/model.rb', line 21

def setup
  monitor.start
  @nproc = `nproc`.strip.to_i
  measure
end

#sync ⇒ Object 



144
145
146
147
148
149
150
 
# File 'lib/osctl/cli/top/model.rb', line 144

def sync
  if @mutex.owned?
    yield
  else
    @mutex.synchronize { yield }
  end
end

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



173
174
175
176
177
178
179
180
181
182
183
184
185
 
# File 'lib/osctl/cli/top/model.rb', line 173

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