from datetime import timedelta from django.utils import timezone from django.contrib.auth.models import User from django.db import models from jenkins.models import JenkinsSlave class Resource(models.Model): id = models.AutoField(primary_key=True) name = models.CharField(max_length=100, unique=True) description = models.CharField(max_length=300, blank=True, null=True) url = models.CharField(max_length=100, blank=True, null=True) owner = models.ForeignKey(User, related_name='user_lab_owner', null=True) vpn_users = models.ManyToManyField(User, related_name='user_vpn_users') slave = models.ForeignKey(JenkinsSlave, on_delete=models.DO_NOTHING, null=True) def get_booking_utilization(self, weeks): """ Return a dictionary containing the count of booked and free seconds for a resource in the range [now,now + weeks] if weeks is positive, or [now-weeks, now] if weeks is negative """ length = timedelta(weeks=abs(weeks)) now = timezone.now() start = now end = now + length if weeks < 0: start = now - length end = now bookings = self.booking_set.filter(start__lt=start + length, end__gt=start) booked_seconds = 0 for booking in bookings: booking_start = booking.start booking_end = booking.end if booking_start < start: booking_start = start if booking_end > end: booking_end = start + length total = booking_end - booking_start booked_seconds += total.total_seconds() return {'booked_seconds': booked_seconds, 'available_seconds': length.total_seconds() - booked_seconds} class Meta: db_table = 'resource' def __str__(self): return self.name class Server(models.Model): id = models.AutoField(primary_key=True) resource = models.ForeignKey(Resource, on_delete=models.CASCADE) name = models.CharField(max_length=100, blank=True) model = models.CharField(max_length=100, blank=True) cpu = models.CharField(max_length=100, blank=True) ram = models.CharField(max_length=100, blank=True) storage = models.CharField(max_length=100, blank=True) class Meta: db_table = 'server' def __str__(self): return self.name