qcg/service.py

   1 import logging
   2 import time
   3
   4 from django.db import transaction
   5 from django.utils.functional import SimpleLazyObject
   6 from django.utils.timezone import now
   7 from pyqcg import QCG
   8 from pyqcg.service import Registry
   9 from pyqcg.utils import Credential, TimePeriod, JobStatus, TaskStatus
  10
  11 from qcg.models import User, Job, Task, Allocation, NodeInfo
  12
  13
  14 logger = logging.getLogger(__name__)
  15
  16
  17 @transaction.atomic
  18 def update_user_data(user, proxy):
  19     ts = time.time()
  20     QCG.start()
  21
  22     registry = Registry(Credential(proxy))
  23
  24     # put lock on user record (hopefully..?)
  25     user = User.objects.select_for_update().get(pk=user.pk)
  26     last_update = user.last_update
  27
  28     changed_filter = {'changed': TimePeriod(after=last_update)}
  29
  30     ###################################
  31     # Jobs
  32     ###################################
  33     jts = time.time()
  34     jobs = registry.jobs(stats=[v for k, v in vars(JobStatus).iteritems() if not k.startswith('__')],
  35                          **changed_filter)
  36     jte = time.time()
  37
  38     jobs_count = 0
  39     for qcg_job in jobs:
  40         params = Job.qcg_map(qcg_job, user)
  41         job_id = params.pop('job_id')
  42
  43         Job.objects.update_or_create(job_id=job_id, defaults=params)
  44         jobs_count += 1
  45
  46     ###################################
  47     # Tasks
  48     ###################################
  49     tts = time.time()
  50     tasks = registry.tasks(stats=[v for k, v in vars(TaskStatus).iteritems() if not k.startswith('__')],
  51                            **changed_filter)
  52     tte = time.time()
  53
  54     jobs_cache = SimpleLazyObject(lambda: {j.job_id: j for j in Job.objects.filter(owner=user)})
  55     task_count = 0
  56     for qcg_task in tasks:
  57         params = Task.qcg_map(qcg_task, jobs_cache[qcg_task.job_id])
  58         task_id = params.pop('task_id')
  59
  60         task, created = Task.objects.update_or_create(job__job_id=qcg_task.job_id, task_id=task_id, defaults=params)
  61
  62         if not created:
  63             task.allocations.all().delete()
  64
  65         for qcg_alloc in qcg_task.allocations:
  66             alloc = task.allocations.create(**Allocation.qcg_map(qcg_alloc))
  67
  68             for qcg_node in qcg_alloc.nodes:
  69                 alloc.nodes.create(**NodeInfo.qcg_map(qcg_node))
  70
  71         task_count += 1
  72
  73     # release user lock
  74     user.last_update = now()
  75     user.save()
  76
  77     elapsed = time.time() - ts
  78     elapsed_jobs = jte - jts
  79     elapsed_tasks = tte - tts
  80     elapsed_py = elapsed - elapsed_jobs - elapsed_tasks
  81     logger.info('(%.3f) USER = %s, LAST_UPDATE = %s, JOBS = %s (%.3f), TASKS = %s (%.3f), TIME = %.3f',
  82                 elapsed, user, last_update, jobs_count, elapsed_jobs, task_count, elapsed_tasks, elapsed_py)
  83
  84
  85 @transaction.atomic
  86 def update_job(job, proxy):
  87     if job.terminated and job.purged:
  88         return
  89
  90     ts = time.time()
  91     QCG.start()
  92
  93     credential = Credential(proxy)
  94     qcg_job = job.qcg_job
  95     qcg_job.credential = credential
  96
  97     jts = time.time()
  98     qcg_job.refresh_information()
  99     elapsed_job = time.time() - jts
 100
 101     for name, val in job.qcg_map(qcg_job, job.owner).iteritems():
 102         if getattr(job, name) != val:
 103             setattr(job, name, val)
 104
 105     job.save()
 106
 107     elapsed_tasks = 0
 108     for task in job.tasks.all():
 109         qcg_task = task.qcg_task
 110         qcg_task.credential = credential
 111
 112         tts = time.time()
 113         qcg_task.refresh_information()
 114         elapsed_tasks += time.time() - tts
 115
 116         for name, val in task.qcg_map(qcg_task, task.job).iteritems():
 117             if getattr(task, name) != val:
 118                 setattr(task, name, val)
 119
 120         task.save()
 121         task.allocations.all().delete()
 122
 123         for qcg_alloc in qcg_task.allocations:
 124             alloc = task.allocations.create(**Allocation.qcg_map(qcg_alloc))
 125
 126             for qcg_node in qcg_alloc.nodes:
 127                 alloc.nodes.create(**NodeInfo.qcg_map(qcg_node))
 128
 129     elapsed = time.time() - ts
 130     elapsed_py = elapsed - elapsed_job - elapsed_tasks
 131     logger.info('(%.3f) JOB = %s (%.3f), TASKS = %d (%.3f), TIME = %.3f',
 132                 elapsed, job.job_id, elapsed_job, job.tasks.count(), elapsed_tasks, elapsed_py)
 133
 134
 135 def cancel(obj, proxy):
 136     ts = time.time()
 137     QCG.start()
 138
 139     qcg_obj = obj.qcg_job if isinstance(obj, Job) else obj.qcg_task
 140     qcg_obj.credential = Credential(proxy)
 141
 142     jts = time.time()
 143     qcg_obj.cancel()
 144     elapsed_cancel = time.time() - jts
 145
 146     elapsed = time.time() - ts
 147     elapsed_py = elapsed - elapsed_cancel
 148     logger.info('(%.3f) OBJ = %s (%.3f), TIME = %.3f', elapsed, obj, elapsed_cancel, elapsed_py)
 149
 150
 151 def clean(obj, proxy):
 152     ts = time.time()
 153     QCG.start()
 154
 155     qcg_obj = obj.qcg_job if isinstance(obj, Job) else obj.qcg_task
 156     qcg_obj.credential = Credential(proxy)
 157
 158     jts = time.time()
 159     qcg_obj.clean()
 160     elapsed_clean = time.time() - jts
 161
 162     elapsed = time.time() - ts
 163     elapsed_py = elapsed - elapsed_clean
 164     logger.info('(%.3f) OBJ = %s (%.3f), TIME = %.3f', elapsed, obj, elapsed_clean, elapsed_py)