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annotate planemo/lib/python3.7/site-packages/boto/manage/volume.py @ 0:d30785e31577 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:18:57 -0400
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1 # Copyright (c) 2006-2009 Mitch Garnaat http://garnaat.org/
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2 #
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3 # Permission is hereby granted, free of charge, to any person obtaining a
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4 # copy of this software and associated documentation files (the
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5 # "Software"), to deal in the Software without restriction, including
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6 # without limitation the rights to use, copy, modify, merge, publish, dis-
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7 # tribute, sublicense, and/or sell copies of the Software, and to permit
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8 # persons to whom the Software is furnished to do so, subject to the fol-
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9 # lowing conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be included
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12 # in all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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15 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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16 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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17 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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18 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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20 # IN THE SOFTWARE.
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21 from __future__ import print_function
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22
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23 from boto.sdb.db.model import Model
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24 from boto.sdb.db.property import StringProperty, IntegerProperty, ListProperty, ReferenceProperty, CalculatedProperty
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25 from boto.manage.server import Server
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26 from boto.manage import propget
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27 import boto.utils
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28 import boto.ec2
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29 import time
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30 import traceback
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31 from contextlib import closing
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32 import datetime
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33
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34
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35 class CommandLineGetter(object):
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36
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37 def get_region(self, params):
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38 if not params.get('region', None):
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39 prop = self.cls.find_property('region_name')
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40 params['region'] = propget.get(prop, choices=boto.ec2.regions)
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41
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42 def get_zone(self, params):
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43 if not params.get('zone', None):
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44 prop = StringProperty(name='zone', verbose_name='EC2 Availability Zone',
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45 choices=self.ec2.get_all_zones)
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46 params['zone'] = propget.get(prop)
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47
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48 def get_name(self, params):
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49 if not params.get('name', None):
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50 prop = self.cls.find_property('name')
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51 params['name'] = propget.get(prop)
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52
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53 def get_size(self, params):
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54 if not params.get('size', None):
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55 prop = IntegerProperty(name='size', verbose_name='Size (GB)')
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56 params['size'] = propget.get(prop)
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57
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58 def get_mount_point(self, params):
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59 if not params.get('mount_point', None):
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60 prop = self.cls.find_property('mount_point')
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61 params['mount_point'] = propget.get(prop)
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62
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63 def get_device(self, params):
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64 if not params.get('device', None):
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65 prop = self.cls.find_property('device')
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66 params['device'] = propget.get(prop)
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67
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68 def get(self, cls, params):
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69 self.cls = cls
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70 self.get_region(params)
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71 self.ec2 = params['region'].connect()
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72 self.get_zone(params)
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73 self.get_name(params)
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74 self.get_size(params)
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75 self.get_mount_point(params)
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76 self.get_device(params)
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77
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78 class Volume(Model):
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79
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80 name = StringProperty(required=True, unique=True, verbose_name='Name')
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81 region_name = StringProperty(required=True, verbose_name='EC2 Region')
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82 zone_name = StringProperty(required=True, verbose_name='EC2 Zone')
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83 mount_point = StringProperty(verbose_name='Mount Point')
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84 device = StringProperty(verbose_name="Device Name", default='/dev/sdp')
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85 volume_id = StringProperty(required=True)
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86 past_volume_ids = ListProperty(item_type=str)
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87 server = ReferenceProperty(Server, collection_name='volumes',
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88 verbose_name='Server Attached To')
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89 volume_state = CalculatedProperty(verbose_name="Volume State",
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90 calculated_type=str, use_method=True)
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91 attachment_state = CalculatedProperty(verbose_name="Attachment State",
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92 calculated_type=str, use_method=True)
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93 size = CalculatedProperty(verbose_name="Size (GB)",
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94 calculated_type=int, use_method=True)
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95
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96 @classmethod
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97 def create(cls, **params):
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98 getter = CommandLineGetter()
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99 getter.get(cls, params)
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100 region = params.get('region')
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101 ec2 = region.connect()
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102 zone = params.get('zone')
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103 size = params.get('size')
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104 ebs_volume = ec2.create_volume(size, zone.name)
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105 v = cls()
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106 v.ec2 = ec2
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107 v.volume_id = ebs_volume.id
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108 v.name = params.get('name')
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109 v.mount_point = params.get('mount_point')
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110 v.device = params.get('device')
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111 v.region_name = region.name
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112 v.zone_name = zone.name
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113 v.put()
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114 return v
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115
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116 @classmethod
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117 def create_from_volume_id(cls, region_name, volume_id, name):
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118 vol = None
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119 ec2 = boto.ec2.connect_to_region(region_name)
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120 rs = ec2.get_all_volumes([volume_id])
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121 if len(rs) == 1:
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122 v = rs[0]
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123 vol = cls()
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124 vol.volume_id = v.id
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125 vol.name = name
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126 vol.region_name = v.region.name
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127 vol.zone_name = v.zone
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128 vol.put()
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129 return vol
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130
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131 def create_from_latest_snapshot(self, name, size=None):
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132 snapshot = self.get_snapshots()[-1]
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133 return self.create_from_snapshot(name, snapshot, size)
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134
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135 def create_from_snapshot(self, name, snapshot, size=None):
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136 if size < self.size:
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137 size = self.size
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138 ec2 = self.get_ec2_connection()
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139 if self.zone_name is None or self.zone_name == '':
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140 # deal with the migration case where the zone is not set in the logical volume:
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141 current_volume = ec2.get_all_volumes([self.volume_id])[0]
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142 self.zone_name = current_volume.zone
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143 ebs_volume = ec2.create_volume(size, self.zone_name, snapshot)
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144 v = Volume()
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145 v.ec2 = self.ec2
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146 v.volume_id = ebs_volume.id
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147 v.name = name
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148 v.mount_point = self.mount_point
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149 v.device = self.device
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150 v.region_name = self.region_name
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151 v.zone_name = self.zone_name
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152 v.put()
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153 return v
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154
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155 def get_ec2_connection(self):
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156 if self.server:
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157 return self.server.ec2
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158 if not hasattr(self, 'ec2') or self.ec2 is None:
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159 self.ec2 = boto.ec2.connect_to_region(self.region_name)
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160 return self.ec2
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161
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162 def _volume_state(self):
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163 ec2 = self.get_ec2_connection()
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164 rs = ec2.get_all_volumes([self.volume_id])
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165 return rs[0].volume_state()
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166
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167 def _attachment_state(self):
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168 ec2 = self.get_ec2_connection()
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169 rs = ec2.get_all_volumes([self.volume_id])
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170 return rs[0].attachment_state()
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171
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172 def _size(self):
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173 if not hasattr(self, '__size'):
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174 ec2 = self.get_ec2_connection()
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175 rs = ec2.get_all_volumes([self.volume_id])
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176 self.__size = rs[0].size
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177 return self.__size
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178
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179 def install_xfs(self):
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180 if self.server:
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181 self.server.install('xfsprogs xfsdump')
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182
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183 def get_snapshots(self):
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184 """
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185 Returns a list of all completed snapshots for this volume ID.
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186 """
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187 ec2 = self.get_ec2_connection()
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188 rs = ec2.get_all_snapshots()
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189 all_vols = [self.volume_id] + self.past_volume_ids
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190 snaps = []
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191 for snapshot in rs:
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192 if snapshot.volume_id in all_vols:
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193 if snapshot.progress == '100%':
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194 snapshot.date = boto.utils.parse_ts(snapshot.start_time)
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195 snapshot.keep = True
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196 snaps.append(snapshot)
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197 snaps.sort(cmp=lambda x, y: cmp(x.date, y.date))
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198 return snaps
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199
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200 def attach(self, server=None):
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201 if self.attachment_state == 'attached':
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202 print('already attached')
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203 return None
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204 if server:
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205 self.server = server
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206 self.put()
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207 ec2 = self.get_ec2_connection()
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208 ec2.attach_volume(self.volume_id, self.server.instance_id, self.device)
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209
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210 def detach(self, force=False):
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211 state = self.attachment_state
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212 if state == 'available' or state is None or state == 'detaching':
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213 print('already detached')
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214 return None
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215 ec2 = self.get_ec2_connection()
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216 ec2.detach_volume(self.volume_id, self.server.instance_id, self.device, force)
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217 self.server = None
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218 self.put()
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219
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220 def checkfs(self, use_cmd=None):
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221 if self.server is None:
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222 raise ValueError('server attribute must be set to run this command')
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223 # detemine state of file system on volume, only works if attached
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224 if use_cmd:
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225 cmd = use_cmd
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226 else:
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227 cmd = self.server.get_cmdshell()
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228 status = cmd.run('xfs_check %s' % self.device)
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229 if not use_cmd:
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230 cmd.close()
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231 if status[1].startswith('bad superblock magic number 0'):
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232 return False
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233 return True
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234
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235 def wait(self):
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236 if self.server is None:
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237 raise ValueError('server attribute must be set to run this command')
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238 with closing(self.server.get_cmdshell()) as cmd:
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239 # wait for the volume device to appear
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240 cmd = self.server.get_cmdshell()
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241 while not cmd.exists(self.device):
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242 boto.log.info('%s still does not exist, waiting 10 seconds' % self.device)
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243 time.sleep(10)
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244
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245 def format(self):
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246 if self.server is None:
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247 raise ValueError('server attribute must be set to run this command')
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248 status = None
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249 with closing(self.server.get_cmdshell()) as cmd:
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250 if not self.checkfs(cmd):
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251 boto.log.info('make_fs...')
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252 status = cmd.run('mkfs -t xfs %s' % self.device)
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253 return status
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254
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255 def mount(self):
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256 if self.server is None:
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257 raise ValueError('server attribute must be set to run this command')
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258 boto.log.info('handle_mount_point')
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259 with closing(self.server.get_cmdshell()) as cmd:
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260 cmd = self.server.get_cmdshell()
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261 if not cmd.isdir(self.mount_point):
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262 boto.log.info('making directory')
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263 # mount directory doesn't exist so create it
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264 cmd.run("mkdir %s" % self.mount_point)
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265 else:
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266 boto.log.info('directory exists already')
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267 status = cmd.run('mount -l')
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268 lines = status[1].split('\n')
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269 for line in lines:
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270 t = line.split()
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271 if t and t[2] == self.mount_point:
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272 # something is already mounted at the mount point
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273 # unmount that and mount it as /tmp
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274 if t[0] != self.device:
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275 cmd.run('umount %s' % self.mount_point)
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276 cmd.run('mount %s /tmp' % t[0])
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277 cmd.run('chmod 777 /tmp')
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278 break
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279 # Mount up our new EBS volume onto mount_point
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280 cmd.run("mount %s %s" % (self.device, self.mount_point))
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281 cmd.run('xfs_growfs %s' % self.mount_point)
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282
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283 def make_ready(self, server):
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284 self.server = server
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285 self.put()
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286 self.install_xfs()
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287 self.attach()
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288 self.wait()
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289 self.format()
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290 self.mount()
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291
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292 def freeze(self):
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293 if self.server:
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294 return self.server.run("/usr/sbin/xfs_freeze -f %s" % self.mount_point)
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295
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296 def unfreeze(self):
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297 if self.server:
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298 return self.server.run("/usr/sbin/xfs_freeze -u %s" % self.mount_point)
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299
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300 def snapshot(self):
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301 # if this volume is attached to a server
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302 # we need to freeze the XFS file system
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303 try:
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304 self.freeze()
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305 if self.server is None:
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306 snapshot = self.get_ec2_connection().create_snapshot(self.volume_id)
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307 else:
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308 snapshot = self.server.ec2.create_snapshot(self.volume_id)
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309 boto.log.info('Snapshot of Volume %s created: %s' % (self.name, snapshot))
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310 except Exception:
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311 boto.log.info('Snapshot error')
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312 boto.log.info(traceback.format_exc())
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313 finally:
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314 status = self.unfreeze()
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315 return status
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316
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317 def get_snapshot_range(self, snaps, start_date=None, end_date=None):
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318 l = []
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319 for snap in snaps:
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320 if start_date and end_date:
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321 if snap.date >= start_date and snap.date <= end_date:
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322 l.append(snap)
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323 elif start_date:
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324 if snap.date >= start_date:
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325 l.append(snap)
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326 elif end_date:
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327 if snap.date <= end_date:
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328 l.append(snap)
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329 else:
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330 l.append(snap)
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331 return l
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332
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333 def trim_snapshots(self, delete=False):
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334 """
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335 Trim the number of snapshots for this volume. This method always
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336 keeps the oldest snapshot. It then uses the parameters passed in
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337 to determine how many others should be kept.
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338
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339 The algorithm is to keep all snapshots from the current day. Then
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340 it will keep the first snapshot of the day for the previous seven days.
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341 Then, it will keep the first snapshot of the week for the previous
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342 four weeks. After than, it will keep the first snapshot of the month
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343 for as many months as there are.
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344
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345 """
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346 snaps = self.get_snapshots()
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347 # Always keep the oldest and the newest
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348 if len(snaps) <= 2:
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349 return snaps
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350 snaps = snaps[1:-1]
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351 now = datetime.datetime.now(snaps[0].date.tzinfo)
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352 midnight = datetime.datetime(year=now.year, month=now.month,
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353 day=now.day, tzinfo=now.tzinfo)
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354 # Keep the first snapshot from each day of the previous week
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355 one_week = datetime.timedelta(days=7, seconds=60*60)
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356 print(midnight-one_week, midnight)
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357 previous_week = self.get_snapshot_range(snaps, midnight-one_week, midnight)
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358 print(previous_week)
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359 if not previous_week:
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360 return snaps
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361 current_day = None
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362 for snap in previous_week:
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363 if current_day and current_day == snap.date.day:
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364 snap.keep = False
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365 else:
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366 current_day = snap.date.day
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367 # Get ourselves onto the next full week boundary
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368 if previous_week:
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369 week_boundary = previous_week[0].date
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370 if week_boundary.weekday() != 0:
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371 delta = datetime.timedelta(days=week_boundary.weekday())
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372 week_boundary = week_boundary - delta
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373 # Keep one within this partial week
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374 partial_week = self.get_snapshot_range(snaps, week_boundary, previous_week[0].date)
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375 if len(partial_week) > 1:
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376 for snap in partial_week[1:]:
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377 snap.keep = False
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378 # Keep the first snapshot of each week for the previous 4 weeks
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379 for i in range(0, 4):
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380 weeks_worth = self.get_snapshot_range(snaps, week_boundary-one_week, week_boundary)
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381 if len(weeks_worth) > 1:
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382 for snap in weeks_worth[1:]:
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383 snap.keep = False
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384 week_boundary = week_boundary - one_week
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parents:
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385 # Now look through all remaining snaps and keep one per month
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guerler
parents:
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386 remainder = self.get_snapshot_range(snaps, end_date=week_boundary)
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guerler
parents:
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387 current_month = None
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guerler
parents:
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388 for snap in remainder:
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guerler
parents:
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389 if current_month and current_month == snap.date.month:
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guerler
parents:
diff changeset
390 snap.keep = False
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guerler
parents:
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391 else:
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guerler
parents:
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392 current_month = snap.date.month
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guerler
parents:
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393 if delete:
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guerler
parents:
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394 for snap in snaps:
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guerler
parents:
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395 if not snap.keep:
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guerler
parents:
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396 boto.log.info('Deleting %s(%s) for %s' % (snap, snap.date, self.name))
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guerler
parents:
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397 snap.delete()
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guerler
parents:
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398 return snaps
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guerler
parents:
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399
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guerler
parents:
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400 def grow(self, size):
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guerler
parents:
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401 pass
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guerler
parents:
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402
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guerler
parents:
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403 def copy(self, snapshot):
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guerler
parents:
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404 pass
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guerler
parents:
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405
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guerler
parents:
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406 def get_snapshot_from_date(self, date):
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guerler
parents:
diff changeset
407 pass
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guerler
parents:
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408
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guerler
parents:
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409 def delete(self, delete_ebs_volume=False):
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guerler
parents:
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410 if delete_ebs_volume:
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guerler
parents:
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411 self.detach()
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guerler
parents:
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412 ec2 = self.get_ec2_connection()
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guerler
parents:
diff changeset
413 ec2.delete_volume(self.volume_id)
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guerler
parents:
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414 super(Volume, self).delete()
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guerler
parents:
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415
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guerler
parents:
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416 def archive(self):
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guerler
parents:
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417 # snapshot volume, trim snaps, delete volume-id
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guerler
parents:
diff changeset
418 pass
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guerler
parents:
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419
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
420