test-cowtree

#!/usr/bin/python2
#
# Copyright 2017  Lars Wirzenius


import logging
import random
import shutil
import tempfile
import time


import obnamlib


BAG_SIZE = 1024**2
CACHE_SIZE = BAG_SIZE
NUM_KEYS = 10**4


def measure(func):
    tmpdir = tempfile.mkdtemp()
    logging.debug('tmpdir %s', tmpdir)
    fs = obnamlib.LocalFS(tmpdir)

    bagstore = obnamlib.BagStore()
    bagstore.set_location(fs, '.')

    blobstore = obnamlib.BlobStore()
    blobstore.set_bag_store(bagstore)
    blobstore.set_max_bag_size(BAG_SIZE)
    blobstore.set_max_cache_bytes(CACHE_SIZE)

    ls = obnamlib.LeafStore()
    ls.set_blob_store(blobstore)

    cow = obnamlib.CowTree()
    cow.set_leaf_store(ls)

    started = time.time()
    func(cow)
    cow.commit()
    ended = time.time()

    shutil.rmtree(tmpdir)

    return ended - started


def insert_individually(cow):
    for i in range(NUM_KEYS):
        key, value = get_keyvalue(i)
        cow.insert(key, value)


def get_keyvalue(i):
    return str(random.randint(0, 2**63)), 'value-%d' % i



logging.basicConfig(filename='test-cowtree.log', level=logging.DEBUG)

print 'individually {:.2f}'.format(measure(insert_individually))