Class: Workflow::Orchestrator

Inherits:
Object
  • Object
show all
Defined in:
lib/rbbt/workflow/util/orchestrator.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(timer = 5, available_resources = {}) ⇒ Orchestrator

Returns a new instance of Orchestrator.



103
104
105
106
107
108
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 103

def initialize(timer = 5, available_resources = {})
  @timer               = timer
  @available_resources = IndiferentHash.setup(available_resources)
  @resources_requested = IndiferentHash.setup({})
  @resources_used      = IndiferentHash.setup({})
end

Instance Attribute Details

#available_resources ⇒ Object

Returns the value of attribute available_resources.



101
102
103
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 101

def available_resources
  @available_resources
end

#resources_requested ⇒ Object

Returns the value of attribute resources_requested.



101
102
103
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 101

def resources_requested
  @resources_requested
end

#resources_used ⇒ Object

Returns the value of attribute resources_used.



101
102
103
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 101

def resources_used
  @resources_used
end

#timer ⇒ Object

Returns the value of attribute timer.



101
102
103
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 101

def timer
  @timer
end

Class Method Details

.candidates(workload, rules) ⇒ Object 



81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 81

def self.candidates(workload, rules)
  if rules.empty?
    candidates = workload.select{|k,v| v.empty? }.
      collect{|k,v| k}.
      reject{|k| k.done? }
  else
    candidates = workload. #select{|k,v| Orchestrator.job_rules(rules, k) }.
      select{|k,v| v.empty? }.
      collect{|k,v| k }.
      reject{|k| k.done? }
  end

  top_level = workload.keys - workload.values.flatten

  candidates = purge_duplicates candidates
  candidates = sort_candidates candidates, rules

  candidates
end

.job_resources(rules, job) ⇒ Object 



63
64
65
66
67
68
69
70
71
72
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 63

def self.job_resources(rules, job)
  resources = (job_rules(rules, job) || {})["resources"] || {}

  IndiferentHash.setup(resources)

  default_resources = rules["default_resources"] || rules["defaults"]["resources"]
  default_resources.each{|k,v| resources[k] ||= v } if default_resources

  resources
end

.job_rules(rules, job) ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 38

def self.job_rules(rules, job)
  workflow = job.workflow.to_s
  task_name = job.task_name.to_s
  defaults = rules["defaults"] || {}

  return IndiferentHash.setup(defaults) unless rules[workflow]
  return IndiferentHash.setup(defaults) unless rules[workflow][task_name]

  job_rules = IndiferentHash.setup(rules[workflow][task_name])
  defaults.each{|k,v| job_rules[k] = v if job_rules[k].nil? } if defaults
  job_rules
end

.job_workload(job) ⇒ Object 



6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 6

def self.job_workload(job)
  workload = {job => []}
  return workload if job.done?

  job.dependencies.each do |dep|
    next if dep.done?
    workload.merge!(job_workload(dep))
    workload[job] += workload[dep]
    workload[job] << dep
    workload[job].uniq!
  end

  job.input_dependencies.each do |dep|
    next if dep.done?
    workload.merge!(job_workload(dep))
    workload[job] += workload[dep]
    workload[job] << dep
    workload[job].uniq!
  end

  workload
end

.purge_duplicates(candidates) ⇒ Object 



51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 51

def self.purge_duplicates(candidates)
  seen = Set.new
  candidates.select do |job|
    if seen.include? job.path
      false
    else
      seen << job.path
      true
    end
  end
end

.sort_candidates(candidates, rules) ⇒ Object 



74
75
76
77
78
79
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 74

def self.sort_candidates(candidates, rules)
  seen = Set.new
  candidates.sort_by do |job|
    - job_resources(rules, job).values.inject(0){|acc,e| acc += e}
  end
end

.workload(jobs) ⇒ Object 



29
30
31
32
33
34
35
36
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 29

def self.workload(jobs)
  jobs.inject({}) do |acc,job| 
      Orchestrator.job_workload(job).each do |j,d|
        acc[j] = d unless acc.keys.collect{|k| k.path }.include? j.path
      end
      acc
    end
end

Instance Method Details

#check_resources(rules, job) ⇒ Object 



121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 121

def check_resources(rules, job)
  resources = Orchestrator.job_resources(rules, job)

  limit_resources = resources.select{|resource,value| available_resources[resource] && ((resources_requested[resource] || 0) + value) > available_resources[resource]  }.collect{|resource,v| resource }
  if limit_resources.any?
    Log.debug "Orchestrator waiting on #{job.path} due to #{limit_resources * ", "}"
  else

    resources_used[job] = resources
    resources.each do |resource,value| 
      resources_requested[resource] ||= 0
      resources_requested[resource] += value.to_i
    end
    Log.low "Orchestrator producing #{job.path} with resources #{resources}"

    return yield
  end
end

#erase_job_dependencies(job, rules, all_jobs, top_level_jobs) ⇒ Object 



156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 156

def erase_job_dependencies(job, rules, all_jobs, top_level_jobs)
  job.dependencies.each do |dep|
    next if top_level_jobs.include? dep.path
    next unless Orchestrator.job_rules(rules, dep)["erase"].to_s == 'true'

    dep_path = dep.path
    parents = all_jobs.select do |parent| 
      paths = parent.info[:dependencies].nil? ? parent.dependencies.collect{|d| d.path } : parent.info[:dependencies].collect{|d| d.last }
      paths.include? dep_path
    end

    next unless parents.reject{|parent| parent.done? }.empty?

    parents.each do |parent|
      Log.high "Erasing #{dep.path} from #{parent.path}"
      parent.archive_deps
      parent.copy_files_dir
      parent.dependencies = parent.dependencies - [dep]
    end
    dep.clean
  end
end

#process(rules, jobs) ⇒ Object 



179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
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
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 179

def process(rules, jobs)
  begin

    workload = Orchestrator.workload(jobs)
    all_jobs = workload.keys

    top_level_jobs = jobs.collect{|job| job.path }
    while workload.any? 

      candidates = resources_used.keys + Orchestrator.candidates(workload, rules)
      raise "No candidates and no running jobs" if candidates.empty?

      candidates.each do |job|
        case 
        when (job.error? || job.aborted?)
          begin
            if job.recoverable_error?
              job.clean
              raise TryAgain
            else
              next
            end
          ensure
            Log.warn "Releases resources from failed job: #{job.path}"
            release_resources(job)
          end
        when job.done?
          Log.debug "Orchestrator done #{job.path}"
          release_resources(job)
          erase_job_dependencies(job, rules, all_jobs, top_level_jobs)

        when job.running?
          next

        else
          check_resources(rules, job) do
            run_with_rules(rules, job)
          end
        end
      end

      new_workload = {}
      workload.each do |k,v|
        next if k.done?
        new_workload[k] = v.reject{|d| d.done? || (d.error? && ! d.recoverable_error?)}
      end
      workload = new_workload
      sleep timer
    end
  rescue TryAgain
    retry
  end
end

#release_resources(job) ⇒ Object 



110
111
112
113
114
115
116
117
118
119
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 110

def release_resources(job)
  if resources_used[job]
    Log.debug "Orchestrator releasing resouces from #{job.path}"
    resources_used[job].each do |resource,value| 
      next if resource == 'size'
      resources_requested[resource] -= value.to_i
    end
    resources_used.delete job
  end
end

#run_with_rules(rules, job) ⇒ Object 



140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
 
# File 'lib/rbbt/workflow/util/orchestrator.rb', line 140

def run_with_rules(rules, job)
  job_rules = Orchestrator.job_rules(rules, job)

  Rbbt::Config.with_config do 
    job_rules[:config_keys].each do |config|
      Rbbt::Config.process_config config
    end if job_rules && job_rules[:config_keys]

    log = job_rules[:log] if job_rules 
    log = Log.severity if log.nil?
    Log.with_severity log do
      job.produce(false, true)
    end
  end
end