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e9a81157ac
MS-SQL has no native Enum-type support and therefore needs to work with constraints. Since these constraints need unique names the suggested approach referenced in the following alembic documentation has been applied: http://bit.ly/2x9r8pb ASTERISK-27255 #close Change-Id: I8b579750dae0c549f1103ee50172644afb9b2f95
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
"""update_identify_by
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Revision ID: 3772f8f828da
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Revises: c7a44a5a0851
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Create Date: 2016-08-11 10:47:29.211063
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"""
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# revision identifiers, used by Alembic.
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revision = '3772f8f828da'
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down_revision = 'c7a44a5a0851'
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from alembic import op
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import sqlalchemy as sa
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def enum_update(table_name, column_name, enum_name, enum_values):
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if op.get_context().bind.dialect.name != 'postgresql':
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if op.get_context().bind.dialect.name == 'mssql':
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op.drop_constraint('ck_ps_endpoints_identify_by_pjsip_identify_by_values', 'ps_endpoints')
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op.alter_column(table_name, column_name,
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type_=sa.Enum(*enum_values, name=enum_name))
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return
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# Postgres requires a few more steps
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tmp = enum_name + '_tmp'
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op.execute('ALTER TYPE ' + enum_name + ' RENAME TO ' + tmp)
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updated = sa.Enum(*enum_values, name=enum_name)
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updated.create(op.get_bind(), checkfirst=False)
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op.execute('ALTER TABLE ' + table_name + ' ALTER COLUMN ' + column_name +
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' TYPE ' + enum_name + ' USING identify_by::text::' + enum_name)
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op.execute('DROP TYPE ' + tmp)
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def upgrade():
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enum_update('ps_endpoints', 'identify_by', 'pjsip_identify_by_values',
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['username', 'auth_username'])
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def downgrade():
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enum_update('ps_endpoints', 'identify_by', 'pjsip_identify_by_values',
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['username'])
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