mirror of
https://github.com/kevingruesser/bootstrap-vz.git
synced 2025-08-24 07:26:29 +00:00
96028f96e1
I couldn't be bothered to untangle this, so here it goes: * Log colors depending on loglevel * Simplified Filelogger * Remove description=None from basetask * create_list creates task list from argument now * Task rollback feature: If a task fails, the tasklist calls rollback() on the completed tasks in reverse order * Added TaskException to common.exceptions as a base to extend from * Added TriggerRollback task to common.tasks for development purposes * An EBS volume for bootstrapping is now created and attached to the instance (including rollback actions) * EC2 Connect task now depends on host.GetInfo
61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
from base import Task
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from common import phases
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from common.exceptions import TaskException
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from connection import Connect
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import time
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class CreateVolume(Task):
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phase = phases.volume_creation
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after = [Connect]
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description = 'Creating an EBS volume for bootstrapping'
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def run(self, info):
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volume_size = int(info.manifest.volume['size']/1024)
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info.volume = info.connection.create_volume(volume_size, info.host['availabilityZone'])
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while info.volume.volume_state() != 'available':
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time.sleep(5)
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info.volume.update()
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rollback_description = 'Deleting the EBS volume'
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def rollback(self, info):
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info.volume.delete()
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del info.volume
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class AttachVolume(Task):
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phase = phases.volume_creation
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after = [CreateVolume]
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description = 'Attaching the EBS volume'
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def run(self, info):
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def char_range(c1, c2):
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"""Generates the characters from `c1` to `c2`, inclusive."""
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for c in xrange(ord(c1), ord(c2)+1):
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yield chr(c)
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import os.path
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info.bootstrap_device = {}
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for letter in char_range('f', 'z'):
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dev_path = os.path.join('/dev', 'xvd' + letter)
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if not os.path.exists(dev_path):
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info.bootstrap_device['path'] = dev_path
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info.bootstrap_device['ec2_path'] = os.path.join('/dev', 'sd' + letter)
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break
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if 'path' not in info.bootstrap_device:
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raise VolumeError('Unable to find a free block device path for mounting the bootstrap volume')
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info.volume.attach(info.host['instanceId'], info.bootstrap_device['ec2_path'])
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while info.volume.attachment_state() != 'attached':
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time.sleep(2)
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info.volume.update()
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rollback_description = 'Detaching the EBS volume'
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def rollback(self, info):
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info.volume.detach()
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while info.volume.attachment_state() is not None:
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time.sleep(2)
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info.volume.update()
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class VolumeError(TaskException):
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pass
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