Make pairtree links from volume ids (for dataset)

link_dataset.py

from pairtree import id_encode
import sys
import os.path

def topath(ident):
    encodedid = id_encode(ident)
    filepath = []                                                                                                                                                                                                     while encodedid:
        filepath.append(encodedid[:2])
        encodedid = encodedid[2:]
    return os.path.join(*filepath)

for line in sys.stdin:
    (namespace,objid) = line.strip().split('.',1)
    pt_objid = id_encode(objid)
    path = f"obj/{namespace}/pairtree_root/{topath(objid)}"

    # for pairtree structure
    print(f"mkdir -p $DATASET_HOME/'{path}'")
    print(f"ln -s '/sdr1/{path}/{pt_objid}' $DATASET_HOME/'{path}/{pt_objid}'")
    # alternate for flat structure
    # print(f"ln -s '/sdr1/{path}/{pt_objid}' $DATASET_HOME/'{namespace}.{pt_objid}'")