Class: OpenC3::ActivityModel

Inherits:
Model show all
Defined in:
lib/openc3/models/activity_model.rb

Constant Summary collapse

MAX_DURATION = 
Time::SEC_PER_DAY
PRIMARY_KEY =

MUST be equal to ‘TimelineModel::PRIMARY_KEY` minus the leading __

'__openc3_timelines'.freeze

Instance Attribute Summary collapse

Attributes inherited from Model

#name, #plugin, #scope, #updated_at

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Model

#check_disable_erb, #deploy, #destroyed?, filter, find_all_by_plugin, get_all_models, get_model, handle_config, names, set, store, #undeploy

Constructor Details

#initialize(name:, start:, stop:, kind:, data:, scope:, updated_at: 0, duration: 0, fulfillment: nil, events: nil) ⇒ ActivityModel

Returns a new instance of ActivityModel.



133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
 
# File 'lib/openc3/models/activity_model.rb', line 133

def initialize(
  name:,
  start:,
  stop:,
  kind:,
  data:,
  scope:,
  updated_at: 0,
  duration: 0,
  fulfillment: nil,
  events: nil
)
  super("#{scope}#{PRIMARY_KEY}__#{name}", name: name, scope: scope)
  set_input(
    fulfillment: fulfillment,
    start: start,
    stop: stop,
    kind: kind,
    data: data,
    events: events,
  )
  @updated_at = updated_at
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def data
  @data
end

#duration ⇒ Object (readonly)

Returns the value of attribute duration.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def duration
  @duration
end

#events ⇒ Object (readonly)

Returns the value of attribute events.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def events
  @events
end

#fulfillment ⇒ Object (readonly)

Returns the value of attribute fulfillment.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def fulfillment
  @fulfillment
end

#kind ⇒ Object (readonly)

Returns the value of attribute kind.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def kind
  @kind
end

#start ⇒ Object (readonly)

Returns the value of attribute start.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def start
  @start
end

#stop ⇒ Object (readonly)

Returns the value of attribute stop.



131
132
133
 
# File 'lib/openc3/models/activity_model.rb', line 131

def stop
  @stop
end

Class Method Details

.activities(name:, scope:) ⇒ Array|nil

Called via the microservice this gets the previous 00:00:15 to 01:01:00. This should allow for a small buffer around the timeline to make sure the schedule doesn’t get stale. 00:00:15 was selected as the schedule queue used in the microservice has round robin array with 15 slots to make sure we don’t miss a planned task.

Returns:

  • (Array|nil) —

    Array of the next hour in the sorted set



44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/openc3/models/activity_model.rb', line 44

def self.activities(name:, scope:)
  now = Time.now.to_i
  start_score = now - 15
  stop_score = (now + 3660)
  array = Store.zrangebyscore("#{scope}#{PRIMARY_KEY}__#{name}", start_score, stop_score)
  ret_array = Array.new
  array.each do |value|
    ret_array << ActivityModel.from_json(value, name: name, scope: scope)
  end
  return ret_array
end

.all(name:, scope:, limit: 100) ⇒ Array<Hash>

Returns Array up to the limit of the models (as Hash objects) stored under the primary key.

Returns:

  • (Array<Hash>) —

    Array up to the limit of the models (as Hash objects) stored under the primary key



71
72
73
74
75
76
77
78
 
# File 'lib/openc3/models/activity_model.rb', line 71

def self.all(name:, scope:, limit: 100)
  array = Store.zrange("#{scope}#{PRIMARY_KEY}__#{name}", 0, -1, :limit => [0, limit])
  ret_array = Array.new
  array.each do |value|
    ret_array << JSON.parse(value, :allow_nan => true, :create_additions => true)
  end
  return ret_array
end

.count(name:, scope:) ⇒ Integer

Returns count of the members stored under the primary key.

Returns:

  • (Integer) —

    count of the members stored under the primary key



90
91
92
 
# File 'lib/openc3/models/activity_model.rb', line 90

def self.count(name:, scope:)
  return Store.zcard("#{scope}#{PRIMARY_KEY}__#{name}")
end

.destroy(name:, scope:, score:) ⇒ Integer

Remove one member from a sorted set.

Returns:

  • (Integer) —

    count of the members removed



96
97
98
99
100
101
102
103
104
105
106
107
 
# File 'lib/openc3/models/activity_model.rb', line 96

def self.destroy(name:, scope:, score:)
  result = Store.zremrangebyscore("#{scope}#{PRIMARY_KEY}__#{name}", score, score)
  notification = {
    # start / stop to match SortedModel
    'data' => JSON.generate({'start' => score}),
    'kind' => 'deleted',
    'type' => 'activity',
    'timeline' => name
  }
  TimelineTopic.write_activity(notification, scope: scope)
  return result
end

.from_json(json, name:, scope:) ⇒ ActivityModel

Returns Model generated from the passed JSON.

Returns:



125
126
127
128
129
 
# File 'lib/openc3/models/activity_model.rb', line 125

def self.from_json(json, name:, scope:)
  json = JSON.parse(json, :allow_nan => true, :create_additions => true) if String === json
  raise "json data is nil" if json.nil?
  self.new(**json.transform_keys(&:to_sym), name: name, scope: scope)
end

.get(name:, start:, stop:, scope:, limit: 100) ⇒ Array|nil

Returns Array up to 100 of this model or empty array if name not found under primary_key.

Returns:

  • (Array|nil) —

    Array up to 100 of this model or empty array if name not found under primary_key



57
58
59
60
61
62
63
64
65
66
67
68
 
# File 'lib/openc3/models/activity_model.rb', line 57

def self.get(name:, start:, stop:, scope:, limit: 100)
  if start > stop
    raise ActivityInputError.new "start: #{start} must be before stop: #{stop}"
  end

  array = Store.zrangebyscore("#{scope}#{PRIMARY_KEY}__#{name}", start, stop, :limit => [0, limit])
  ret_array = Array.new
  array.each do |value|
    ret_array << JSON.parse(value, :allow_nan => true, :create_additions => true)
  end
  return ret_array
end

.range_destroy(name:, scope:, min:, max:) ⇒ Integer

Remove members from min to max of the sorted set.

Returns:

  • (Integer) —

    count of the members removed



111
112
113
114
115
116
117
118
119
120
121
122
 
# File 'lib/openc3/models/activity_model.rb', line 111

def self.range_destroy(name:, scope:, min:, max:)
  result = Store.zremrangebyscore("#{scope}#{PRIMARY_KEY}__#{name}", min, max)
  notification = {
    # start / stop to match SortedModel
    'data' => JSON.generate({'start' => min, 'stop' => max}),
    'kind' => 'deleted',
    'type' => 'activity',
    'timeline' => name
  }
  TimelineTopic.write_activity(notification, scope: scope)
  return result
end

.score(name:, score:, scope:) ⇒ String|nil

Returns String of the saved json or nil if score not found under primary_key.

Returns:

  • (String|nil) —

    String of the saved json or nil if score not found under primary_key



81
82
83
84
85
86
87
 
# File 'lib/openc3/models/activity_model.rb', line 81

def self.score(name:, score:, scope:)
  array = Store.zrangebyscore("#{scope}#{PRIMARY_KEY}__#{name}", score, score, :limit => [0, 1])
  array.each do |value|
    return ActivityModel.from_json(value, name: name, scope: scope)
  end
  return nil
end

Instance Method Details

#add_event(status:) ⇒ Object

add_event will make an event. This will NOT save the object to the redis database

Parameters:

  • status (String) —

    • the event status such as "queued" or "updated" or "created"



293
294
295
296
297
298
299
 
# File 'lib/openc3/models/activity_model.rb', line 293

def add_event(status:)
  event = {
    'time' => Time.now.to_i,
    'event' => status
  }
  @events << event
end

#as_json(*a) ⇒ Hash

Returns generated from the ActivityModel.

Returns:

  • (Hash) —

    generated from the ActivityModel



324
325
326
327
328
329
330
331
332
333
334
335
336
 
# File 'lib/openc3/models/activity_model.rb', line 324

def as_json(*a)
  {
    'name' => @name,
    'updated_at' => @updated_at,
    'fulfillment' => @fulfillment,
    'duration' => @duration,
    'start' => @start,
    'stop' => @stop,
    'kind' => @kind,
    'events' => @events,
    'data' => @data.as_json(*a)
  }
end

#commit(status:, message: nil, fulfillment: nil) ⇒ Object

commit will make an event and save the object to the redis database

Parameters:

  • status (String) —

    • the event status such as "complete" or "failed"

  • message (String) (defaults to: nil) —

    • an optional message to include in the event



275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
 
# File 'lib/openc3/models/activity_model.rb', line 275

def commit(status:, message: nil, fulfillment: nil)
  event = {
    'time' => Time.now.to_i,
    'event' => status,
    'commit' => true
  }
  event['message'] = message unless message.nil?
  @fulfillment = fulfillment.nil? ? @fulfillment : fulfillment
  @events << event
  Store.multi do |multi|
    multi.zremrangebyscore(@primary_key, @start, @start)
    multi.zadd(@primary_key, @start, JSON.generate(self.as_json(:allow_nan => true)))
  end
  notify(kind: 'event')
end

#create ⇒ Object

Update the Redis hash at primary_key and set the score equal to the start Epoch time the member is set to the JSON generated via calling as_json



231
232
233
234
235
236
237
238
239
240
241
242
 
# File 'lib/openc3/models/activity_model.rb', line 231

def create
  validate_input(start: @start, stop: @stop, kind: @kind, data: @data)
  collision = validate_time()
  unless collision.nil?
    raise ActivityOverlapError.new "no activities can overlap, collision: #{collision}"
  end

  @updated_at = Time.now.to_nsec_from_epoch
  add_event(status: 'created')
  Store.zadd(@primary_key, @start, JSON.generate(self.as_json(:allow_nan => true)))
  notify(kind: 'created')
end

#destroy ⇒ Object

destroy the activity from the redis database



302
303
304
305
 
# File 'lib/openc3/models/activity_model.rb', line 302

def destroy
  Store.zremrangebyscore(@primary_key, @start, @start)
  notify(kind: 'deleted')
end

#notify(kind:, extra: nil) ⇒ Object

Returns [] update the redis stream / timeline topic that something has changed.

Returns:

  • update the redis stream / timeline topic that something has changed



308
309
310
311
312
313
314
315
316
317
318
319
320
321
 
# File 'lib/openc3/models/activity_model.rb', line 308

def notify(kind:, extra: nil)
  notification = {
    'data' => JSON.generate(as_json(:allow_nan => true)),
    'kind' => kind,
    'type' => 'activity',
    'timeline' => @name
  }
  notification['extra'] = extra unless extra.nil?
  begin
    TimelineTopic.write_activity(notification, scope: @scope)
  rescue StandardError => e
    raise ActivityError.new "Failed to write to stream: #{notification}, #{e}"
  end
end

#set_input(start:, stop:, kind: nil, data: nil, events: nil, fulfillment: nil) ⇒ Object

Set the values of the instance, @start, @kind, @data, @events…



213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
 
# File 'lib/openc3/models/activity_model.rb', line 213

def set_input(start:, stop:, kind: nil, data: nil, events: nil, fulfillment: nil)
  begin
    DateTime.strptime(start.to_s, '%s')
    DateTime.strptime(stop.to_s, '%s')
  rescue ArgumentError
    raise ActivityInputError.new "invalid input must be seconds: #{start}, #{stop}"
  end
  @start = start
  @stop = stop
  @duration = @stop - @start
  @fulfillment = fulfillment.nil? ? false : fulfillment
  @kind = kind.nil? ? @kind : kind
  @data = data.nil? ? @data : data
  @events = events.nil? ? Array.new : events
end

#update(start:, stop:, kind:, data:) ⇒ Object

Update the Redis hash at primary_key and remove the current activity at the current score and update the score to the new score equal to the start Epoch time this uses a multi to execute both the remove and create. The member via the JSON generated via calling as_json



247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
 
# File 'lib/openc3/models/activity_model.rb', line 247

def update(start:, stop:, kind:, data:)
  array = Store.zrangebyscore(@primary_key, @start, @start)
  if array.length == 0
    raise ActivityError.new "failed to find activity at: #{@start}"
  end

  validate_input(start: start, stop: stop, kind: kind, data: data)
  old_start = @start
  set_input(start: start, stop: stop, kind: kind, data: data, events: @events)
  @updated_at = Time.now.to_nsec_from_epoch
  # copy of create
  collision = validate_time(old_start)
  unless collision.nil?
    raise ActivityOverlapError.new "failed to update #{old_start}, no activities can overlap, collision: #{collision}"
  end

  add_event(status: 'updated')
  Store.multi do |multi|
    multi.zremrangebyscore(@primary_key, old_start, old_start)
    multi.zadd(@primary_key, @start, JSON.generate(self.as_json(:allow_nan => true)))
  end
  notify(kind: 'updated', extra: old_start)
  return @start
end

#validate_input(start:, stop:, kind:, data:) ⇒ Object

validate the input to the rules we have created for timelines.

  • A task’s start MUST NOT be in the past.

  • A task’s start MUST be before the stop.

  • A task CAN NOT be longer than MAX_DURATION (86400) in seconds.

  • A task MUST have a kind.

  • A task MUST have a data object/hash.



188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
 
# File 'lib/openc3/models/activity_model.rb', line 188

def validate_input(start:, stop:, kind:, data:)
  begin
    DateTime.strptime(start.to_s, '%s')
    DateTime.strptime(stop.to_s, '%s')
  rescue Date::Error
    raise ActivityInputError.new "failed validation input must be seconds: #{start}, #{stop}"
  end
  now_i = Time.now.to_i + 10
  duration = stop - start
  if now_i >= start
    raise ActivityInputError.new "activity must be in the future, current_time: #{now_i} vs #{start}"
  elsif duration >= MAX_DURATION
    raise ActivityInputError.new "activity can not be longer than #{MAX_DURATION} seconds"
  elsif duration <= 0
    raise ActivityInputError.new "start: #{start} must be before stop: #{stop}"
  elsif kind.nil?
    raise ActivityInputError.new "kind must not be nil: #{kind}"
  elsif data.nil?
    raise ActivityInputError.new "data must not be nil: #{data}"
  elsif data.is_a?(Hash) == false
    raise ActivityInputError.new "data must be a json object/hash: #{data}"
  end
end

#validate_time(ignore_score = nil) ⇒ Object

validate_time will be called on create this will pull the time up to MAX_DURATION of an activity this will make sure that the activity is the only activity on the timeline for the duration of the activity. Score is the Seconds since the Unix Epoch: (%s) Number of seconds since 1970-01-01 00:00:00 UTC. We then search back from the stop of the activity and check to see if any activities are in the last x seconds (MAX_DURATION), if the zrange rev byscore finds activites from in reverse order so the first task is the closest task to the current score. In this a parameter ignore_score allows the request to ignore that time and skip to the next time but if nothing is found in the time range we can return nil.

Parameters:

  • ignore_score (Integer) (defaults to: nil) —

    • should be nil unless you want to ignore a time when doing an update



166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
 
# File 'lib/openc3/models/activity_model.rb', line 166

def validate_time(ignore_score = nil)
  max_score = @start - MAX_DURATION
  array = Store.zrevrangebyscore(@primary_key, @stop, max_score)
  array.each do |value|
    activity = JSON.parse(value, :allow_nan => true, :create_additions => true)
    if ignore_score == activity['start']
      next
    elsif activity['stop'] > @start
      return activity['start']
    else
      return nil
    end
  end
  return nil
end