7 %w{TERM INT}.each do |sig|
10 $stderr.puts "Received #{signame} signal"
15 if ENV["CRUNCH_DISPATCH_LOCKFILE"]
16 lockfilename = ENV.delete "CRUNCH_DISPATCH_LOCKFILE"
17 lockfile = File.open(lockfilename, File::RDWR|File::CREAT, 0644)
18 unless lockfile.flock File::LOCK_EX|File::LOCK_NB
19 abort "Lock unavailable on #{lockfilename} - exit"
23 ENV["RAILS_ENV"] = ARGV[0] || ENV["RAILS_ENV"] || "development"
25 require File.dirname(__FILE__) + '/../config/boot'
26 require File.dirname(__FILE__) + '/../config/environment'
30 LOG_BUFFER_SIZE = 2**20
33 include ApplicationHelper
36 return act_as_system_user
41 @todo_pipelines = PipelineInstance.queue
45 @@slurm_version ||= Gem::Version.new(`sinfo --version`.match(/\b[\d\.]+\b/)[0])
46 if Gem::Version.new('2.3') <= @@slurm_version
47 `sinfo --noheader -o '%n:%t'`.strip
49 # Expand rows with hostname ranges (like "foo[1-3,5,9-12]:idle")
50 # into multiple rows with one hostname each.
51 `sinfo --noheader -o '%N:%t'`.split("\n").collect do |line|
52 tokens = line.split ":"
53 if (re = tokens[0].match /^(.*?)\[([-,\d]+)\]$/)
54 re[2].split(",").collect do |range|
55 range = range.split("-").collect(&:to_i)
56 (range[0]..range[-1]).collect do |n|
57 [re[1] + n.to_s, tokens[1..-1]].join ":"
67 def update_node_status
68 if Server::Application.config.crunch_job_wrapper.to_s.match /^slurm/
69 @nodes_in_state = {idle: 0, alloc: 0, down: 0}
75 re = line.match /(\S+?):+(idle|alloc|down)/
78 # sinfo tells us about a node N times if it is shared by N partitions
79 next if node_seen[re[1]]
80 node_seen[re[1]] = true
82 # count nodes in each state
83 @nodes_in_state[re[2].to_sym] += 1
85 # update our database (and cache) when a node's state changes
86 if @node_state[re[1]] != re[2]
87 @node_state[re[1]] = re[2]
88 node = Node.where('hostname=?', re[1]).first
90 $stderr.puts "dispatch: update #{re[1]} state to #{re[2]}"
91 node.info[:slurm_state] = re[2]
94 $stderr.puts "dispatch: sinfo reports '#{re[1]}' is not down, but no node has that name"
108 if job.runtime_constraints['min_nodes']
109 min_nodes = begin job.runtime_constraints['min_nodes'].to_i rescue 1 end
114 next if @nodes_in_state[:idle] < min_nodes
118 next if @running[job.uuid]
122 case Server::Application.config.crunch_job_wrapper
125 when :slurm_immediate
126 cmd_args = ["salloc",
131 "--job-name=#{job.uuid}",
132 "--nodes=#{min_nodes}"]
134 raise "Unknown crunch_job_wrapper: #{Server::Application.config.crunch_job_wrapper}"
137 if Server::Application.config.crunch_job_user
138 cmd_args.unshift("sudo", "-E", "-u",
139 Server::Application.config.crunch_job_user,
140 "PERLLIB=#{ENV['PERLLIB']}")
143 job_auth = ApiClientAuthorization.
144 new(user: User.where('uuid=?', job.modified_by_user_uuid).first,
148 crunch_job_bin = (ENV['CRUNCH_JOB_BIN'] || `which arv-crunch-job`.strip)
149 if crunch_job_bin == ''
150 raise "No CRUNCH_JOB_BIN env var, and crunch-job not in path."
155 arvados_internal = Rails.configuration.git_internal_dir
156 if not File.exists? arvados_internal
157 $stderr.puts `mkdir -p #{arvados_internal.shellescape} && cd #{arvados_internal.shellescape} && git init --bare`
160 src_repo = File.join(Rails.configuration.git_repositories_dir, job.repository + '.git')
161 src_repo = File.join(Rails.configuration.git_repositories_dir, job.repository, '.git') unless File.exists? src_repo
164 $stderr.puts "dispatch: #{File.join Rails.configuration.git_repositories_dir, job.repository} doesn't exist"
170 $stderr.puts `cd #{arvados_internal.shellescape} && git fetch --no-tags #{src_repo.shellescape} && git tag #{job.uuid.shellescape} #{job.script_version.shellescape}`
172 cmd_args << crunch_job_bin
173 cmd_args << '--job-api-token'
174 cmd_args << job_auth.api_token
177 cmd_args << '--git-dir'
178 cmd_args << arvados_internal
180 $stderr.puts "dispatch: #{cmd_args.join ' '}"
183 i, o, e, t = Open3.popen3(*cmd_args)
185 $stderr.puts "dispatch: popen3: #{$!}"
191 $stderr.puts "dispatch: job #{job.uuid}"
192 start_banner = "dispatch: child #{t.pid} start #{Time.now.ctime.to_s}"
193 $stderr.puts start_banner
194 $redis.set job.uuid, start_banner + "\n"
195 $redis.publish job.uuid, start_banner
196 $redis.publish job.owner_uuid, start_banner
198 @running[job.uuid] = {
214 # no-op -- let crunch-job take care of locking.
219 # no-op -- let crunch-job take care of locking.
224 @running.each do |job_uuid, j|
227 # Throw away child stdout
229 j[:stdout].read_nonblock(2**20)
230 rescue Errno::EAGAIN, EOFError
233 # Read whatever is available from child stderr
236 stderr_buf = j[:stderr].read_nonblock(2**20)
237 rescue Errno::EAGAIN, EOFError
241 j[:stderr_buf] << stderr_buf
242 if j[:stderr_buf].index "\n"
243 lines = j[:stderr_buf].lines("\n").to_a
244 if j[:stderr_buf][-1] == "\n"
247 j[:stderr_buf] = lines.pop
250 $stderr.print "#{job_uuid} ! " unless line.index(job_uuid)
252 pub_msg = "#{Time.now.ctime.to_s} #{line.strip}"
253 $redis.publish job.owner_uuid, pub_msg
254 $redis.publish job_uuid, pub_msg
255 $redis.append job_uuid, pub_msg + "\n"
256 if LOG_BUFFER_SIZE < $redis.strlen(job_uuid)
259 .getrange(job_uuid, (LOG_BUFFER_SIZE >> 1), -1)
269 return if 0 == @running.size
275 pid_done = waitpid(-1, Process::WNOHANG | Process::WUNTRACED)
277 j_done = @running.values.
278 select { |j| j[:wait_thr].pid == pid_done }.
281 rescue SystemCallError
282 # I have @running processes but system reports I have no
283 # children. This is likely to happen repeatedly if it happens at
284 # all; I will log this no more than once per child process I
286 if 0 < @running.select { |uuid,j| j[:warned_waitpid_error].nil? }.size
287 children = @running.values.collect { |j| j[:wait_thr].pid }.join ' '
288 $stderr.puts "dispatch: IPC bug: waitpid() error (#{$!}), but I have children #{children}"
290 @running.each do |uuid,j| j[:warned_waitpid_error] = true end
293 @running.each do |uuid, j|
294 if j[:wait_thr].status == false
295 pid_done = j[:wait_thr].pid
303 job_done = j_done[:job]
304 $stderr.puts "dispatch: child #{pid_done} exit"
305 $stderr.puts "dispatch: job #{job_done.uuid} end"
307 # Ensure every last drop of stdout and stderr is consumed
309 if j_done[:stderr_buf] and j_done[:stderr_buf] != ''
310 $stderr.puts j_done[:stderr_buf] + "\n"
314 j_done[:wait_thr].value
316 jobrecord = Job.find_by_uuid(job_done.uuid)
317 jobrecord.running = false
318 jobrecord.finished_at ||= Time.now
319 # Don't set 'jobrecord.success = false' because if the job failed to run due to an
320 # issue with crunch-job or slurm, we want the job to stay in the queue.
323 # Invalidate the per-job auth token
324 j_done[:job_auth].update_attributes expires_at: Time.now
326 $redis.publish job_done.uuid, "end"
328 @running.delete job_done.uuid
332 expire_tokens = @pipe_auth_tokens.dup
333 @todo_pipelines.each do |p|
334 pipe_auth = (@pipe_auth_tokens[p.uuid] ||= ApiClientAuthorization.
335 create(user: User.where('uuid=?', p.modified_by_user_uuid).first,
337 puts `export ARVADOS_API_TOKEN=#{pipe_auth.api_token} && arv-run-pipeline-instance --run-here --no-wait --instance #{p.uuid}`
338 expire_tokens.delete p.uuid
341 expire_tokens.each do |k, v|
342 v.update_attributes expires_at: Time.now
343 @pipe_auth_tokens.delete k
350 @pipe_auth_tokens ||= { }
351 $stderr.puts "dispatch: ready"
352 while !$signal[:term] or @running.size > 0
355 @running.each do |uuid, j|
356 if !j[:started] and j[:sent_int] < 2
358 Process.kill 'INT', j[:wait_thr].pid
360 # No such pid = race condition + desired result is
367 refresh_todo unless did_recently(:refresh_todo, 1.0)
369 unless @todo.empty? or did_recently(:start_jobs, 1.0) or $signal[:term]
372 unless (@todo_pipelines.empty? and @pipe_auth_tokens.empty?) or did_recently(:update_pipelines, 5.0)
377 select(@running.values.collect { |j| [j[:stdout], j[:stderr]] }.flatten,
384 def did_recently(thing, min_interval)
386 if !@did_recently[thing] or @did_recently[thing] < Time.now - min_interval
387 @did_recently[thing] = Time.now
395 # This is how crunch-job child procs know where the "refresh" trigger file is
396 ENV["CRUNCH_REFRESH_TRIGGER"] = Rails.configuration.crunch_refresh_trigger