5 logger = logging.getLogger('run-command')
6 log_handler = logging.StreamHandler()
7 log_handler.setFormatter(logging.Formatter("run-command: %(message)s"))
8 logger.addHandler(log_handler)
9 logger.setLevel(logging.INFO)
17 import crunchutil.subst as subst
19 import arvados.commands.put as put
25 import multiprocessing
26 import crunchutil.robust_put as robust_put
27 import crunchutil.vwd as vwd
32 parser = argparse.ArgumentParser()
33 parser.add_argument('--dry-run', action='store_true')
34 parser.add_argument('--script-parameters', type=str, default="{}")
35 args = parser.parse_args()
40 api = arvados.api('v1')
41 t = arvados.current_task().tmpdir
42 os.chdir(arvados.current_task().tmpdir)
51 jobp = arvados.current_job()['script_parameters']
52 if len(arvados.current_task()['parameters']) > 0:
53 taskp = arvados.current_task()['parameters']
56 jobp = json.loads(args.script_parameters)
57 os.environ['JOB_UUID'] = 'zzzzz-8i9sb-1234567890abcde'
58 os.environ['TASK_UUID'] = 'zzzzz-ot0gb-1234567890abcde'
59 os.environ['CRUNCH_SRC'] = '/tmp/crunche-src'
60 if 'TASK_KEEPMOUNT' not in os.environ:
61 os.environ['TASK_KEEPMOUNT'] = '/keep'
66 return os.path.join(arvados.current_task().tmpdir, 'tmpdir')
72 return str(multiprocessing.cpu_count())
75 return os.environ['JOB_UUID']
78 return os.environ['TASK_UUID']
81 return os.environ['CRUNCH_SRC']
83 subst.default_subs["task.tmpdir"] = sub_tmpdir
84 subst.default_subs["task.outdir"] = sub_outdir
85 subst.default_subs["job.srcdir"] = sub_jobsrc
86 subst.default_subs["node.cores"] = sub_cores
87 subst.default_subs["job.uuid"] = sub_jobid
88 subst.default_subs["task.uuid"] = sub_taskid
90 class SigHandler(object):
94 def send_signal(self, subprocesses, signum):
95 for sp in subprocesses:
96 sp.send_signal(signum)
99 def add_to_group(gr, match):
103 gr[m].append(match.group(0))
105 def expand_item(p, c):
106 if isinstance(c, dict):
107 if "foreach" in c and "command" in c:
109 items = get_items(p, p[var])
112 params = copy.copy(p)
114 r.extend(expand_list(params, c["command"]))
116 if "list" in c and "index" in c and "command" in c:
118 items = get_items(p, p[var])
119 params = copy.copy(p)
120 params[var] = items[int(c["index"])]
121 return expand_list(params, c["command"])
123 pattern = re.compile(c["regex"])
125 items = get_items(p, p[c["filter"]])
126 return [i for i in items if pattern.match(i)]
128 items = get_items(p, p[c["group"]])
131 match = pattern.match(i)
133 add_to_group(groups, match)
134 return [groups[k] for k in groups]
136 items = get_items(p, p[c["extract"]])
139 match = pattern.match(i)
141 r.append(list(match.groups()))
143 elif isinstance(c, list):
144 return expand_list(p, c)
145 elif isinstance(c, basestring):
146 return [subst.do_substitution(p, c)]
150 def expand_list(p, l):
151 if isinstance(l, basestring):
152 return expand_item(p, l)
154 return [exp for arg in l for exp in expand_item(p, arg)]
156 def get_items(p, value):
157 if isinstance(value, dict):
158 return expand_item(p, value)
160 if isinstance(value, list):
161 return expand_list(p, value)
163 fn = subst.do_substitution(p, value)
164 mode = os.stat(fn).st_mode
165 prefix = fn[len(os.environ['TASK_KEEPMOUNT'])+1:]
167 if stat.S_ISDIR(mode):
168 items = [os.path.join(fn, l) for l in os.listdir(fn)]
169 elif stat.S_ISREG(mode):
171 items = [line.rstrip("\r\n") for line in f]
182 def recursive_foreach(params, fvars):
185 items = get_items(params, params[var])
186 logger.info("parallelizing on %s with items %s" % (var, items))
187 if items is not None:
189 params = copy.copy(params)
192 recursive_foreach(params, fvars)
195 arvados.api().job_tasks().create(body={
196 'job_uuid': arvados.current_job()['uuid'],
197 'created_by_job_task_uuid': arvados.current_task()['uuid'],
202 logger.info(expand_list(params, params["command"]))
204 logger.error("parameter %s with value %s in task.foreach yielded no items" % (var, params[var]))
208 if "task.foreach" in jobp:
209 if args.dry_run or arvados.current_task()['sequence'] == 0:
210 # This is the first task to start the other tasks and exit
211 fvars = jobp["task.foreach"]
212 if isinstance(fvars, basestring):
214 if not isinstance(fvars, list) or len(fvars) == 0:
215 logger.error("value of task.foreach must be a string or non-empty list")
217 recursive_foreach(jobp, jobp["task.foreach"])
219 if "task.vwd" in jobp:
220 # Set output of the first task to the base vwd collection so it
221 # will be merged with output fragments from the other tasks by
223 arvados.current_task().set_output(subst.do_substitution(jobp, jobp["task.vwd"]))
225 arvados.current_task().set_output(None)
228 # This is the only task so taskp/jobp are the same
232 if "task.vwd" in taskp:
233 # Populate output directory with symlinks to files in collection
234 vwd.checkout(subst.do_substitution(taskp, taskp["task.vwd"]), outdir)
236 if "task.cwd" in taskp:
237 os.chdir(subst.do_substitution(taskp, taskp["task.cwd"]))
240 if isinstance(taskp["command"][0], list):
241 for c in taskp["command"]:
242 cmd.append(expand_list(taskp, c))
244 cmd.append(expand_list(taskp, taskp["command"]))
246 if "task.stdin" in taskp:
247 stdinname = subst.do_substitution(taskp, taskp["task.stdin"])
249 stdinfile = open(stdinname, "rb")
251 if "task.stdout" in taskp:
252 stdoutname = subst.do_substitution(taskp, taskp["task.stdout"])
254 stdoutfile = open(stdoutname, "wb")
256 logger.info("{}{}{}".format(' | '.join([' '.join(c) for c in cmd]), (" < " + stdinname) if stdinname is not None else "", (" > " + stdoutname) if stdoutname is not None else ""))
260 except subst.SubstitutionError as e:
262 logger.error("task parameters were:")
263 logger.error(pprint.pformat(taskp))
265 except Exception as e:
266 logger.exception("caught exception")
267 logger.error("task parameters were:")
268 logger.error(pprint.pformat(taskp))
275 close_streams.append(stdinfile)
276 next_stdin = stdinfile
278 for i in xrange(len(cmd)):
280 # this is the last command in the pipeline, so its stdout should go to stdoutfile
281 next_stdout = stdoutfile
283 # this is an intermediate command in the pipeline, so its stdout should go to a pipe
284 next_stdout = subprocess.PIPE
286 sp = subprocess.Popen(cmd[i], shell=False, stdin=next_stdin, stdout=next_stdout)
288 # Need to close the FDs on our side so that subcommands will get SIGPIPE if the
289 # consuming process ends prematurely.
291 close_streams.append(sp.stdout)
293 # Send this processes's stdout to to the next process's stdin
294 next_stdin = sp.stdout
296 subprocesses.append(sp)
298 # File descriptors have been handed off to the subprocesses, so close them here.
299 for s in close_streams:
302 # Set up signal handling
305 # Forward terminate signals to the subprocesses.
306 signal.signal(signal.SIGINT, lambda signum, frame: sig.send_signal(subprocesses, signum))
307 signal.signal(signal.SIGTERM, lambda signum, frame: sig.send_signal(subprocesses, signum))
308 signal.signal(signal.SIGQUIT, lambda signum, frame: sig.send_signal(subprocesses, signum))
313 active = sum([1 if s.poll() is None else 0 for s in subprocesses])
315 # wait for process to complete.
316 rcode = subprocesses[len(subprocesses)-1].returncode
318 if sig.sig is not None:
319 logger.critical("terminating on signal %s" % sig.sig)
322 logger.info("completed with exit code %i (%s)" % (rcode, "success" if rcode == 0 else "failed"))
324 except Exception as e:
325 logger.exception("caught exception")
327 # restore default signal handlers.
328 signal.signal(signal.SIGINT, signal.SIG_DFL)
329 signal.signal(signal.SIGTERM, signal.SIG_DFL)
330 signal.signal(signal.SIGQUIT, signal.SIG_DFL)
335 logger.info("the following output files will be saved to keep:")
337 subprocess.call(["find", ".", "-type", "f", "-printf", "run-command: %12.12s %h/%f\\n"], stdout=sys.stderr)
339 logger.info("start writing output to keep")
341 if "task.vwd" in taskp:
342 if "task.foreach" in jobp:
343 # This is a subtask, so don't merge with the original collection, that will happen at the end
344 outcollection = vwd.checkin(subst.do_substitution(taskp, taskp["task.vwd"]), outdir, merge=False).manifest_text()
346 # Just a single task, so do merge with the original collection
347 outcollection = vwd.checkin(subst.do_substitution(taskp, taskp["task.vwd"]), outdir, merge=True).manifest_text()
349 outcollection = robust_put.upload(outdir, logger)
351 api.job_tasks().update(uuid=arvados.current_task()['uuid'],
353 'output': outcollection,
354 'success': (rcode == 0),