Class: OpenC3::LimitsEventTopic

Inherits:
Topic show all
Defined in:
lib/openc3/topics/limits_event_topic.rb

Overview

LimitsEventTopic keeps track of not only the <SCOPE>__openc3_limits_events topic but also the ancillary key value stores. The LIMITS_CHANGE event updates the <SCOPE>__current_limits key. The LIMITS_SET event updates the <SCOPE>__limits_sets. The LIMITS_SETTINGS event updates the <SCOPE>__current_limits_settings. While this isn’t a clean separation of topics (streams) and models (key-value) it helps maintain consistency as the topic and model are linked.

Class Method Summary collapse

Methods inherited from Topic

clear_topics, get_cnt, method_missing

Class Method Details

.current_set(scope:) ⇒ Object 



134
135
136
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 134

def self.current_set(scope:)
  sets(scope: scope).key('true') || "DEFAULT"
end

.delete(target_name, packet_name = nil, scope:) ⇒ Object

Cleanups up the current_limits and current_limits_settings keys for a target or target/packet combination



140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 140

def self.delete(target_name, packet_name = nil, scope:)
  limits = Store.hgetall("#{scope}__current_limits")
  limits.each do |item, _limits_state|
    if packet_name
      if item =~ /^#{target_name}__#{packet_name}__/
        Store.hdel("#{scope}__current_limits", item)
      end
    else
      if item =~ /^#{target_name}__/
        Store.hdel("#{scope}__current_limits", item)
      end
    end
  end

  limits_settings = Store.hgetall("#{scope}__current_limits_settings")
  limits_settings.each do |item, _limits_settings|
    if packet_name
      if item =~ /^#{target_name}__#{packet_name}__/
        Store.hdel("#{scope}__current_limits_settings", item)
      end
    else
      if item =~ /^#{target_name}__/
        Store.hdel("#{scope}__current_limits_settings", item)
      end
    end
  end
end

.out_of_limits(scope:) ⇒ Object 



114
115
116
117
118
119
120
121
122
123
124
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 114

def self.out_of_limits(scope:)
  out_of_limits = []
  limits = Store.hgetall("#{scope}__current_limits")
  limits.each do |item, limits_state|
    if %w(RED RED_HIGH RED_LOW YELLOW YELLOW_HIGH YELLOW_LOW).include?(limits_state)
      target_name, packet_name, item_name = item.split('__')
      out_of_limits << [target_name, packet_name, item_name, limits_state]
    end
  end
  out_of_limits
end

.read(offset = nil, count: 100, scope:) ⇒ Object

Remove the JSON encoding to return hashes directly



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 93

def self.read(offset = nil, count: 100, scope:)
  final_result = []
  topic = "#{scope}__openc3_limits_events"
  if offset
    result = Topic.read_topics([topic], [offset], nil, count)
    if not result.empty?
      # result is a hash with the topic key followed by an array of results
      # This returns just the array of arrays [[offset, hash], [offset, hash], ...]
      final_result = result[topic]
    end
  else
    result = Topic.get_newest_message(topic)
    final_result = [result] if result
  end
  parsed_result = []
  final_result.each do |offset, hash|
    parsed_result << [offset, JSON.parse(hash['event'], :allow_nan => true, :create_additions => true)]
  end
  return parsed_result
end

.sets(scope:) ⇒ Hash{String => String}

Returns all the limits sets as keys with the value ‘true’ or ‘false’ where only the active set is ‘true’

Returns:

  • (Hash{String => String}) —

    Set name followed by 'true' if enabled else 'false'



130
131
132
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 130

def self.sets(scope:)
  Store.hgetall("#{scope}__limits_sets")
end

.sync_system(scope:) ⇒ Object

Update the local System based on overall state



169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 169

def self.sync_system(scope:)
  all_limits_settings = Store.hgetall("#{scope}__current_limits_settings")
  telemetry = System.telemetry.all
  all_limits_settings.each do |item, limits_settings|
    target_name, packet_name, item_name = item.split('__')
    target = telemetry[target_name]
    if target
      packet = target[packet_name]
      if packet
        limits_settings = JSON.parse(limits_settings, :allow_nan => true, :create_additions => true)
        enabled = limits_settings['enabled']
        persistence = limits_settings['persistence_setting']
        limits_settings.each do |limits_set, settings|
          next unless Hash === limits_set
          System.limits.set(target_name, packet_name, item_name, settings['red_low'], settings['yellow_low'], settings['yellow_high'], settings['red_high'], settings['green_low'], settings['green_high'], limits_set.to_s.intern, persistence, enabled)
        end
        if not enabled.nil?
          if enabled
            System.limits.enable(target_name, packet_name, item_name)
          else
            System.limits.disable(target_name, packet_name, item_name)
          end
        end
      end
    end
  end
end

.sync_system_thread_body(scope:, block_ms: nil) ⇒ Object

Update the local system based on limits events



198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 198

def self.sync_system_thread_body(scope:, block_ms: nil)
  telemetry = System.telemetry.all
  topics = ["#{scope}__openc3_limits_events"]
  Topic.read_topics(topics, nil, block_ms) do |topic, msg_id, event, redis|
    event = JSON.parse(event['event'], :allow_nan => true, :create_additions => true)
    case event['type']
    when 'LIMITS_CHANGE'
      # Ignore
    when 'LIMITS_SETTINGS'
      target_name = event['target_name']
      packet_name = event['packet_name']
      item_name = event['item_name']
      target = telemetry[target_name]
      if target
        packet = target[packet_name]
        if packet
          enabled = ConfigParser.handle_true_false_nil(event['enabled'])
          persistence = event['persistence']
          System.limits.set(target_name, packet_name, item_name, event['red_low'], event['yellow_low'], event['yellow_high'], event['red_high'], event['green_low'], event['green_high'], event['limits_set'], persistence, enabled)
        end
      end

    when 'LIMITS_ENABLE_STATE'
      target_name = event['target_name']
      packet_name = event['packet_name']
      item_name = event['item_name']
      target = telemetry[target_name]
      if target
        packet = target[packet_name]
        if packet
          enabled = ConfigParser.handle_true_false_nil(event['enabled'])
          if enabled
            System.limits.enable(target_name, packet_name, item_name)
          else
            System.limits.disable(target_name, packet_name, item_name)
          end
        end
      end

    when 'LIMITS_SET'
      System.limits_set = event['set']
    end
  end
end

.write(event, scope:) ⇒ Object 



33
34
35
36
37
38
39
40
41
42
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
 
# File 'lib/openc3/topics/limits_event_topic.rb', line 33

def self.write(event, scope:)
  case event[:type]
  when :LIMITS_CHANGE
    # The current_limits hash keeps only the current limits state of items
    # It is used by the API to determine the overall limits state
    field = "#{event[:target_name]}__#{event[:packet_name]}__#{event[:item_name]}"
    Store.hset("#{scope}__current_limits", field, event[:new_limits_state])

  when :LIMITS_SETTINGS
    # Limits updated in limits_api.rb to avoid circular reference to TargetModel
    unless sets(scope: scope).has_key?(event[:limits_set])
      Store.hset("#{scope}__limits_sets", event[:limits_set], 'false')
    end

    field = "#{event[:target_name]}__#{event[:packet_name]}__#{event[:item_name]}"
    limits_settings = Store.hget("#{scope}__current_limits_settings", field)
    if limits_settings
      limits_settings = JSON.parse(limits_settings, :allow_nan => true, :create_additions => true)
    else
      limits_settings = {}
    end
    limits = {}
    limits['red_low'] = event[:red_low]
    limits['yellow_low'] = event[:yellow_low]
    limits['yellow_high'] = event[:yellow_high]
    limits['red_high'] = event[:red_high]
    limits['green_low'] = event[:green_low] if event[:green_low] && event[:green_high]
    limits['green_high'] = event[:green_high] if event[:green_low] && event[:green_high]
    limits_settings[event[:limits_set]] = limits
    limits_settings['persistence_setting'] = event[:persistence] if event[:persistence]
    limits_settings['enabled'] = event[:enabled] if not event[:enabled].nil?
    Store.hset("#{scope}__current_limits_settings", field, JSON.generate(limits_settings, :allow_nan => true))

  when :LIMITS_ENABLE_STATE
    field = "#{event[:target_name]}__#{event[:packet_name]}__#{event[:item_name]}"
    limits_settings = Store.hget("#{scope}__current_limits_settings", field)
    if limits_settings
      limits_settings = JSON.parse(limits_settings, :allow_nan => true, :create_additions => true)
    else
      limits_settings = {}
    end
    limits_settings['enabled'] = event[:enabled]
    Store.hset("#{scope}__current_limits_settings", field, JSON.generate(limits_settings, :allow_nan => true))

  when :LIMITS_SET
    sets = sets(scope: scope)
    raise "Set '#{event[:set]}' does not exist!" unless sets.key?(event[:set])

    # Set all existing sets to "false"
    sets = sets.transform_values! { |_key, _value| "false" }
    sets[event[:set]] = "true" # Enable the requested set
    Store.hmset("#{scope}__limits_sets", *sets)
  else
    raise "Invalid limits event type '#{event[:type]}'"
  end

  Topic.write_topic("#{scope}__openc3_limits_events", {event: JSON.generate(event, :allow_nan => true)}, '*', 1000)
end