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001_initial.py

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Source

osm_policy_module/migrations/001_initial.py

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# -*- coding: utf-8 -*-




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# Copyright 2018 Whitestack, LLC




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# *************************************************************




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# This file is part of OSM Monitoring module




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# All Rights Reserved to Whitestack, LLC




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# Licensed under the Apache License, Version 2.0 (the "License"); you may




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# not use this file except in compliance with the License. You may obtain




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# a copy of the License at




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#         http://www.apache.org/licenses/LICENSE-2.0




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# Unless required by applicable law or agreed to in writing, software




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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT




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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the




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# License for the specific language governing permissions and limitations




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# under the License.




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# For those usages not covered by the Apache License, Version 2.0 please




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# contact: bdiaz@whitestack.com or glavado@whitestack.com




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##




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"""Peewee migrations -- 001_initial.py.




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Some examples (model - class or model name)::




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    > Model = migrator.orm['model_name']            # Return model in current state by name




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    > migrator.sql(sql)                             # Run custom SQL




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    > migrator.python(func, *args, **kwargs)        # Run python code




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    > migrator.create_model(Model)                  # Create a model (could be used as decorator)




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    > migrator.remove_model(model, cascade=True)    # Remove a model




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    > migrator.add_fields(model, **fields)          # Add fields to a model




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    > migrator.change_fields(model, **fields)       # Change fields




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    > migrator.remove_fields(model, *field_names, cascade=True)




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    > migrator.rename_field(model, old_field_name, new_field_name)




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    > migrator.rename_table(model, new_table_name)




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    > migrator.add_index(model, *col_names, unique=False)




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    > migrator.drop_index(model, *col_names)




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    > migrator.add_not_null(model, *field_names)




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    > migrator.drop_not_null(model, *field_names)




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    > migrator.add_default(model, field_name, default)




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"""




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import peewee as pw




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SQL = pw.SQL




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def migrate(migrator, database, fake=False, **kwargs):




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    """Write your migrations here."""




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    @migrator.create_model




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    class BaseModel(pw.Model):




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        id = pw.AutoField()




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        class Meta:




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            table_name = "basemodel"




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    @migrator.create_model




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    class ScalingGroup(pw.Model):




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        id = pw.AutoField()




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        nsr_id = pw.CharField(max_length=255)




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        vnf_member_index = pw.IntegerField()




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        name = pw.CharField(max_length=255)




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        content = pw.TextField()




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        class Meta:




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            table_name = "scalinggroup"




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    @migrator.create_model




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    class ScalingPolicy(pw.Model):




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        id = pw.AutoField()




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        name = pw.CharField(max_length=255)




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        cooldown_time = pw.IntegerField()




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        last_scale = pw.DateTimeField()




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        scaling_group = pw.ForeignKeyField(backref='scaling_policies', column_name='scaling_group_id', field='id',




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                                           model=migrator.orm['scalinggroup'], on_delete='CASCADE')




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        class Meta:




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            table_name = "scalingpolicy"




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    @migrator.create_model




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    class ScalingCriteria(pw.Model):




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        id = pw.AutoField()




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        name = pw.CharField(max_length=255)




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        scaling_policy = pw.ForeignKeyField(backref='scaling_criterias', column_name='scaling_policy_id', field='id',




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                                            model=migrator.orm['scalingpolicy'], on_delete='CASCADE')




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        class Meta:




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            table_name = "scalingcriteria"




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    @migrator.create_model




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    class ScalingAlarm(pw.Model):




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        id = pw.AutoField()




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        alarm_uuid = pw.CharField(max_length=255, unique=True)




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        action = pw.CharField(max_length=255)




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        vnf_member_index = pw.IntegerField()




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        vdu_name = pw.CharField(max_length=255)




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        scaling_criteria = pw.ForeignKeyField(backref='scaling_alarms', column_name='scaling_criteria_id', field='id',




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                                              model=migrator.orm['scalingcriteria'], on_delete='CASCADE')




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        class Meta:




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            table_name = "scalingalarm"




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def rollback(migrator, database, fake=False, **kwargs):




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    """Write your rollback migrations here."""




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    migrator.remove_model('scalingalarm')




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    migrator.remove_model('scalingcriteria')




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    migrator.remove_model('scalingpolicy')




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    migrator.remove_model('scalinggroup')




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    migrator.remove_model('basemodel')