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/*
Copyright 2017 the original author or authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package abstract
/*
GenerateChassis - constructs a new AbstractOLT Chassis
*/
func GenerateChassis(CLLI string, rack int, shelf int) Chassis {
chassis := Chassis{CLLI: CLLI, Rack: rack, Shelf: shelf}
var slots [16]Slot
for i := 0; i < 16; i++ {
slots[i] = generateSlot(i, &chassis)
}
chassis.Slots = slots
return chassis
}
func generateSlot(n int, c *Chassis) Slot {
slot := Slot{Number: n + 3, Parent: c}
var ports [16]Port
for i := 0; i < 16; i++ {
ports[i] = generatePort(i+1, &slot)
}
slot.Ports = ports
return slot
}
func generatePort(n int, s *Slot) Port {
port := Port{Number: n, Parent: s}
var onts [64]Ont
//i starts with 1 because :P Architects - blah
for i := 1; i < 65; i++ {
/* adding one because the system that provisions is 1 based on everything not 0 based*/
onts[i-1] = Ont{Number: i, Svlan: calculateSvlan(s.Number, n, i),
Cvlan: calculateCvlan(s.Number, n, i+1), Parent: &port}
}
port.Onts = onts
return port
}
func calculateCvlan(slot int, port int, ont int) int {
ontPortOffset := 120 // Max(ONT_SLOT) * Max(ONT_PORT) = 10 * 12 = 120
ontSlotOffset := 12 //= Max(ONT_PORT) = 12
vlanOffset := 1 //(VID 1 is reserved)
cVid := ((ont-2)%32)*ontPortOffset + (slot-3)*ontSlotOffset + port + vlanOffset
return cVid
}
func calculateSvlan(slot int, port int, ont int) int {
ltSlotOffset := 16
vlanGap := 288 // Max(LT_SLOT) * Max(ltSlotOffset) = 18 * 16 = 288
vlanOffset := 1 //(VID 1 is reserved)
sVid := ((slot-3)*ltSlotOffset + port) + ((ont-1)/32)*vlanGap + vlanOffset
return sVid
}
/*
NextPort pulls the first unMapped port in the abstract chassis so the next physical port can be mapped to it
*/