[2] | 1 | """ |
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| 2 | Migration script to create tables for tracking workflow invocations. |
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| 3 | """ |
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| 4 | |
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| 5 | from sqlalchemy import * |
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| 6 | from sqlalchemy.orm import * |
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| 7 | from migrate import * |
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| 8 | from migrate.changeset import * |
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| 9 | |
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| 10 | import logging |
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| 11 | logging.basicConfig( level=logging.DEBUG ) |
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| 12 | log = logging.getLogger( __name__ ) |
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| 13 | |
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| 14 | import datetime |
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| 15 | now = datetime.datetime.utcnow |
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| 16 | |
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| 17 | metadata = MetaData( migrate_engine ) |
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| 18 | db_session = scoped_session( sessionmaker( bind=migrate_engine, autoflush=False, autocommit=True ) ) |
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| 19 | |
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| 20 | WorkflowInvocation_table = Table( "workflow_invocation", metadata, |
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| 21 | Column( "id", Integer, primary_key=True ), |
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| 22 | Column( "create_time", DateTime, default=now ), |
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| 23 | Column( "update_time", DateTime, default=now, onupdate=now ), |
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| 24 | Column( "workflow_id", Integer, ForeignKey( "workflow.id" ), index=True, nullable=False ) |
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| 25 | ) |
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| 26 | |
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| 27 | WorkflowInvocationStep_table = Table( "workflow_invocation_step", metadata, |
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| 28 | Column( "id", Integer, primary_key=True ), |
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| 29 | Column( "create_time", DateTime, default=now ), |
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| 30 | Column( "update_time", DateTime, default=now, onupdate=now ), |
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| 31 | Column( "workflow_invocation_id", Integer, ForeignKey( "workflow_invocation.id" ), index=True, nullable=False ), |
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| 32 | Column( "workflow_step_id", Integer, ForeignKey( "workflow_step.id" ), index=True, nullable=False ), |
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| 33 | Column( "job_id", Integer, ForeignKey( "job.id" ), index=True, nullable=False ) |
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| 34 | ) |
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| 35 | |
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| 36 | tables = [ WorkflowInvocation_table, WorkflowInvocationStep_table ] |
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| 37 | |
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| 38 | def upgrade(): |
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| 39 | print __doc__ |
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| 40 | metadata.reflect() |
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| 41 | |
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| 42 | for table in tables: |
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| 43 | try: |
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| 44 | table.create() |
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| 45 | except: |
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| 46 | log.warn( "Failed to create table '%s', ignoring (might result in wrong schema)" % table.name ) |
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| 47 | |
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| 48 | def downgrade(): |
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| 49 | metadata.reflect() |
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| 50 | |
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| 51 | for table in tables: |
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| 52 | table.drop() |
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