def find_resource_hierarchies_scattered_local(itvs, hy, rqts):
l_hy = len(hy)
# print "find itvs: ", itvs, rqts[0]
if (l_hy == 1):
return extract_n_scattered_block_itv(itvs, hy[0], rqts[0])
else:
return find_resource_n_h_local(itvs, hy, rqts, hy[0], 0, l_hy)
def find_resource_n_h(itvs, hy, rqts, top, h, h_bottom):
# potentiel available blocks
avail_bks = keep_no_empty_scat_bks(itvs, top)
l_avail_bks = len(avail_bks)
if (l_avail_bks < rqts[h]):
# not enough scattered blocks
return []
else:
if (h == h_bottom - 2):
# reach last level hierarchy of requested resource
# iter on top and find rqts[h-1] block
itvs_acc = []
i = 0
nb_r = 0
while (i < l_avail_bks) and (nb_r != rqts[h]): # need
# print avail_bks[i], "*", hy[h+1]
# TODO test cost of [] filtering .....
avail_sub_bks = [
intersec(avail_bks[i], x) for x in hy[h + 1] if intersec(avail_bks[i], x) != []]
# print avail_sub_bks
# print "--------------------------------------"
r = extract_n_scattered_block_itv(
itvs, avail_sub_bks, rqts[h + 1])
# r = []
if (r != []):
# win for this top_block
itvs_acc.extend(r)
nb_r += 1
i += 1
if (nb_r == rqts[h]):
return itvs_acc
else:
return []
else:
# intermediate hierarchy level
# iter on available_bk
itvs_acc = []
i = 0
nb_r = 0
while (i < l_avail_bks) and (nb_r != rqts[h]):
r = find_resource_n_h(
itvs, hy, rqts, [avail_bks[i]], h + 1, h_bottom)
if (r != []):
# win for this top_block
itvs_acc.extend(r)
nb_r += 1
i += 1
if (nb_r == rqts[h]):
return itvs_acc
else:
return []
def test_extract_n_scattered_block_itv_2():
y = [[(1, 4), (10, 17)], [(6, 9), (19, 22)], [(25, 30)]]
a = extract_n_scattered_block_itv([(1, 30)], y, 2)
assert a == [(1, 4), (6, 9), (10, 17), (19, 22)]
def test_extract_n_scattered_block_itv_1():
y = [[(1, 4), (6, 9)], [(10, 17)], [(20, 30)]]
a = extract_n_scattered_block_itv([(1, 30)], y, 3)
assert a == [(1, 4), (6, 17), (20, 30)]
