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Viewing changes to hooks/hooks.py

[veterok] Add flag to signal when the new_mongo_dir was just created and migrate the existing data directory.

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Lines of Context:
hooks/hooks.py
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    assert(data_directory_path)
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    volid = volume_get_volume_id()
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    if volid:
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        if volume_is_permanent(volid):
 
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        volid_from_subordinate = volume_get_id_for_storage_subordinate()
 
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        if volume_is_permanent(volid) and not volid_from_subordinate:
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            if not volume_init_and_mount(volid):
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                juju_log(
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                    "volume_init_and_mount failed, not applying changes")
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        # Create a directory structure below "new" mount_point
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        curr_dir_stat = os.stat(data_directory_path)
 
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        new_mongo_dir_just_created = False
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        if not os.path.isdir(new_mongo_dir):
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            juju_log("mkdir %s" % new_mongo_dir)
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            os.mkdir(new_mongo_dir)
 
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            new_mongo_dir_just_created = True
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            # copy permissions from current data_directory_path
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            os.chown(new_mongo_dir, curr_dir_stat.st_uid, curr_dir_stat.st_gid)
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            os.chmod(new_mongo_dir, curr_dir_stat.st_mode)
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        if not stop_hook():
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            juju_log("stop_hook() failed - can't migrate data.")
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            return False
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        if not os.path.exists(new_mongo_dir):
 
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        if not os.path.exists(new_mongo_dir) or new_mongo_dir_just_created:
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            juju_log("migrating mongo data {}/ -> {}/".format(
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                data_directory_path, new_mongo_dir))
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            # void copying PID file to perm storage (shouldn't be any...)