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Viewing changes to hooks/keystone_utils.py

[hopem,r=gnuoy]

Fixes db migration (keystone-manage db-sync) races but preventing
database access/usage until the database is ready and has been
initialised.

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Lines of Context:
hooks/keystone_utils.py
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    configs.write_all()
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    if is_elected_leader(CLUSTER_RES):
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        migrate_database()
 
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        if is_db_ready():
 
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            migrate_database()
 
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        else:
 
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            log("Database not ready - deferring to shared-db relation",
 
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                level=INFO)
 
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            return
 
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def set_db_initialised():
 
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    for rid in relation_ids('cluster'):
 
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        relation_set(relation_settings={'db-initialised': 'True'},
 
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                     relation_id=rid)
 
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def is_db_initialised():
 
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    for rid in relation_ids('cluster'):
 
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        units = related_units(rid) + [local_unit()]
 
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        for unit in units:
 
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            db_initialised = relation_get(attribute='db-initialised',
 
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                                          unit=unit, rid=rid)
 
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            if db_initialised:
 
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                log("Database is initialised", level=DEBUG)
 
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                return True
 
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    log("Database is NOT initialised", level=DEBUG)
 
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    return False
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def migrate_database():
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    subprocess.check_output(cmd)
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    service_start('keystone')
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    time.sleep(10)
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    set_db_initialised()
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# OLD
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def get_local_endpoint():
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    """Returns the URL for the local end-point bypassing haproxy/ssl"""
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    if config('prefer-ipv6'):