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self.db_flows[self.flow_id]["dst"] = dst
self.db_flows[self.flow_id]["bitrate"] = rate
self.db_flows[self.flow_id]["bidir"] = bidir
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if band is None:
temp_links2 = []
temp_path = []
src_links = get_links_from_node(self.links_dict, src)
dst_links = get_links_to_node(self.links_dict, dst)
if len(src_links.keys()) >= 1:
temp_links2.append(list(src_links.keys())[0])
if len(dst_links.keys()) >= 1:
temp_links2.append(list(dst_links.keys())[0])
if len(temp_links2) == 2:
[t_src, roadm_src] = temp_links2[0].split('-')
[roadm_dst, t_dst] = temp_links2[1].split('-')
temp_path.append(t_src)
temp_path.append(roadm_src)
temp_path.append(roadm_dst)
temp_path.append(t_dst)
existing_ob = self.get_optical_bands(roadm_src, roadm_dst)
if len(existing_ob) > 0:
print("INFO: Evaluating existing OB {}".format(existing_ob))
#first checking in existing OB
ob_found = 0
for ob_id in existing_ob:
if "is_active" in self.optical_bands[ob_id].keys():
is_active = self.optical_bands[ob_id]["is_active"]
if not is_active:
continue
op, num_slots = map_rate_to_slot(rate)
if debug:
print(temp_links2)
c_slots, l_slots, s_slots = self.get_slots(temp_links2, num_slots, ob_id)
if debug:
print(c_slots)
print(l_slots)
print(s_slots)
if len(c_slots) >= num_slots or len(l_slots) >= num_slots or len(s_slots) >= num_slots:
flow_list, band_range, slots, fiber_f, fiber_b = self.select_slots_and_ports_fs(temp_links2, num_slots,
c_slots,
l_slots, s_slots, bidir,
ob_id)
f0, band = frequency_converter(band_range, slots)
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if debug:
print(f0, band)
print("INFO: RSA completed for Flex Lightpath with OB already in place")
if flow_list is None:
self.null_values(self.flow_id)
continue
slots_i = []
for i in slots:
slots_i.append(int(i))
# return links, path, flow_list, band_range, slots, fiber_f, fiber_b, op, num_slots, f0, band
# links, path, flows, bx, slots, fiber_f, fiber_b, op, n_slots, f0, band
self.db_flows[self.flow_id]["flows"] = flow_list
self.db_flows[self.flow_id]["band_type"] = band_range
self.db_flows[self.flow_id]["slots"] = slots_i
self.db_flows[self.flow_id]["fiber_forward"] = fiber_f
self.db_flows[self.flow_id]["fiber_backward"] = fiber_b
self.db_flows[self.flow_id]["op-mode"] = op
self.db_flows[self.flow_id]["n_slots"] = num_slots
self.db_flows[self.flow_id]["links"] = temp_links2
self.db_flows[self.flow_id]["path"] = temp_path
self.db_flows[self.flow_id]["band"] = band
self.db_flows[self.flow_id]["freq"] = f0
self.db_flows[self.flow_id]["is_active"] = True
self.db_flows[self.flow_id]["parent_opt_band"] = ob_id
self.db_flows[self.flow_id]["new_optical_band"] = 0
self.optical_bands[ob_id]["served_lightpaths"].append(self.flow_id)
'''
if bidir:
rev_ob_id = self.optical_bands[ob_id]["reverse_optical_band_id"]
self.optical_bands[rev_ob_id]["served_lightpaths"].append(self.flow_id)
'''
return self.flow_id, ob_id
else:
print("not enough slots")
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print("trying to extend OB {}".format(ob_id))
new_slots = self.extend_optical_band(ob_id, band=None)
if len(new_slots) > 0:
band_type = self.optical_bands[ob_id]["band_type"]
c_slots = []
l_slots = []
s_slots = []
if band_type == "c_slots":
c_slots = new_slots
elif band_type == "l_slots":
l_slots = new_slots
else:
s_slots = new_slots
op, num_slots = map_rate_to_slot(rate)
if debug:
print(temp_links2)
c_slots, l_slots, s_slots = self.get_slots(temp_links2, num_slots, ob_id)
if debug:
print(c_slots)
print(l_slots)
print(s_slots)
#print(c_slots)
#print(l_slots)
#print(s_slots)
if len(c_slots) >= num_slots or len(l_slots) >= num_slots or len(s_slots) >= num_slots:
flow_list, band_range, slots, fiber_f, fiber_b = self.select_slots_and_ports_fs(
temp_links2, num_slots,
c_slots,
l_slots, s_slots, bidir,
ob_id)
f0, band = frequency_converter(band_range, slots)
if debug:
print(f0, band)
print("INFO: RSA completed for Flex Lightpath with OB already in place")
if flow_list is None:
self.null_values(self.flow_id)
continue
slots_i = []
for i in slots:
slots_i.append(int(i))
# return links, path, flow_list, band_range, slots, fiber_f, fiber_b, op, num_slots, f0, band
# links, path, flows, bx, slots, fiber_f, fiber_b, op, n_slots, f0, band
self.db_flows[self.flow_id]["flows"] = flow_list
self.db_flows[self.flow_id]["band_type"] = band_range
self.db_flows[self.flow_id]["slots"] = slots_i
self.db_flows[self.flow_id]["fiber_forward"] = fiber_f
self.db_flows[self.flow_id]["fiber_backward"] = fiber_b
self.db_flows[self.flow_id]["op-mode"] = op
self.db_flows[self.flow_id]["n_slots"] = num_slots
self.db_flows[self.flow_id]["links"] = temp_links2
self.db_flows[self.flow_id]["path"] = temp_path
self.db_flows[self.flow_id]["band"] = band
self.db_flows[self.flow_id]["freq"] = f0
self.db_flows[self.flow_id]["is_active"] = True
self.db_flows[self.flow_id]["parent_opt_band"] = ob_id
self.db_flows[self.flow_id]["new_optical_band"] = 1
#self.db_flows[self.flow_id]["new_optical_band"] = 2
self.optical_bands[ob_id]["served_lightpaths"].append(self.flow_id)
'''
if bidir:
rev_ob_id = self.optical_bands[ob_id]["reverse_optical_band_id"]
self.optical_bands[rev_ob_id]["served_lightpaths"].append(self.flow_id)
'''
return self.flow_id, ob_id
else:
print("it is not possible to allocate connection in extended OB {}".format(ob_id))
if band is None:
print("INFO: Not existing optical-band meeting the requirements")
else:
print("INFO: optical-band width specified")
#if no OB I create a new one
links, path = self.compute_path(src, dst)
optical_band_id, temp_links = self.create_optical_band(links, path, bidir, num_slots_ob)
op, num_slots = map_rate_to_slot(rate)
if debug:
print(temp_links)
c_slots, l_slots, s_slots = self.get_slots(temp_links, num_slots, optical_band_id)
if debug:
print(c_slots)
print(l_slots)
print(s_slots)
if len(c_slots) > 0 or len(l_slots) > 0 or len(s_slots) > 0:
flow_list, band_range, slots, fiber_f, fiber_b = self.select_slots_and_ports_fs(temp_links, num_slots, c_slots,
l_slots, s_slots, bidir, optical_band_id)
f0, band = frequency_converter(band_range, slots)
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if debug:
print(f0, band)
print("INFO: RSA completed for FLex Lightpath with new OB")
if flow_list is None:
self.null_values(self.flow_id)
return self.flow_id, optical_band_id
slots_i = []
for i in slots:
slots_i.append(int(i))
self.db_flows[self.flow_id]["flows"] = flow_list
self.db_flows[self.flow_id]["band_type"] = band_range
self.db_flows[self.flow_id]["slots"] = slots_i
self.db_flows[self.flow_id]["fiber_forward"] = fiber_f
self.db_flows[self.flow_id]["fiber_backward"] = fiber_b
self.db_flows[self.flow_id]["op-mode"] = op
self.db_flows[self.flow_id]["n_slots"] = num_slots
self.db_flows[self.flow_id]["links"] = temp_links
self.db_flows[self.flow_id]["path"] = path
self.db_flows[self.flow_id]["band"] = band
self.db_flows[self.flow_id]["freq"] = f0
self.db_flows[self.flow_id]["is_active"] = True
self.db_flows[self.flow_id]["parent_opt_band"] = optical_band_id
self.db_flows[self.flow_id]["new_optical_band"] = 1
self.optical_bands[optical_band_id]["served_lightpaths"].append(self.flow_id)
'''
if bidir:
rev_ob_id = self.optical_bands[optical_band_id]["reverse_optical_band_id"]
self.optical_bands[rev_ob_id]["served_lightpaths"].append(self.flow_id)
'''
return self.flow_id, optical_band_id
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def extend_optical_band(self, ob_id, band=None):
ob = self.optical_bands[ob_id]
links = ob["links"]
old_band = ob["band"]
band_type = ob["band_type"]
f0 = ob["freq"]
slots = ob[band_type]
if band is None:
num_slots_ob = map_band_to_slot(old_band/1000.0)
else:
num_slots_ob = map_band_to_slot(band)
new_slots = []
for l in links:
link = self.get_link_by_name(l)
fib = link["optical_details"][band_type]
#s_slots = get_side_slots_on_link(link, band_type, num_slots_ob, slots)
s_slots, s_num = get_side_slots_on_link(fib, num_slots_ob, slots)
print("NEW SLOTS {}".format(s_slots))
if len(new_slots) == 0:
new_slots = s_slots
else:
if len(new_slots) < s_num:
new_slots = list_in_list(new_slots, s_slots)
print("NEW SLOTS {}".format(new_slots))
self.augment_optical_band(ob_id, new_slots, band_type)
new_band = int(len(new_slots)*12.5*1000)
print("{}, {},{},{} ".format(old_band, f0, len(new_slots), new_band))
final_band = old_band + new_band
final_f0 = int(f0 + new_band/2)
print("{}, {}".format(final_band, final_f0))
ob["band"] = final_band
ob["freq"] = final_f0
for link_x in links:
link = self.get_link_by_name(link_x)
fib = link["optical_details"]
self.update_link(fib, new_slots, band_type)