VOL-1867 move simulated olt from voltha-go to voltha-simolt-adapter

Sourced from voltha-go commit 251a11c0ffe60512318a644cd6ce0dc4e12f4018

Change-Id: I8e7ee4da1fed739b3c461917301d2729a79307f5
diff --git a/internal/pkg/adaptercore/simulated_olt.go b/internal/pkg/adaptercore/simulated_olt.go
new file mode 100644
index 0000000..29785c4
--- /dev/null
+++ b/internal/pkg/adaptercore/simulated_olt.go
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+
+ * 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 adaptercore
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	com "github.com/opencord/voltha-go/adapters/common"
+	"github.com/opencord/voltha-go/common/log"
+	"github.com/opencord/voltha-go/kafka"
+	ic "github.com/opencord/voltha-protos/go/inter_container"
+	"github.com/opencord/voltha-protos/go/openflow_13"
+	"github.com/opencord/voltha-protos/go/voltha"
+	"sync"
+)
+
+type SimulatedOLT struct {
+	deviceHandlers        map[string]*DeviceHandler
+	coreProxy             *com.CoreProxy
+	kafkaICProxy          *kafka.InterContainerProxy
+	numOnus               int
+	exitChannel           chan int
+	lockDeviceHandlersMap sync.RWMutex
+}
+
+func NewSimulatedOLT(ctx context.Context, kafkaICProxy *kafka.InterContainerProxy, coreProxy *com.CoreProxy, onuNumber int) *SimulatedOLT {
+	var simulatedOLT SimulatedOLT
+	simulatedOLT.exitChannel = make(chan int, 1)
+	simulatedOLT.deviceHandlers = make(map[string]*DeviceHandler)
+	simulatedOLT.kafkaICProxy = kafkaICProxy
+	simulatedOLT.numOnus = onuNumber
+	simulatedOLT.coreProxy = coreProxy
+	simulatedOLT.lockDeviceHandlersMap = sync.RWMutex{}
+	return &simulatedOLT
+}
+
+func (so *SimulatedOLT) Start(ctx context.Context) error {
+	log.Info("starting-device-manager")
+	log.Info("device-manager-started")
+	return nil
+}
+
+func (so *SimulatedOLT) Stop(ctx context.Context) error {
+	log.Info("stopping-device-manager")
+	so.exitChannel <- 1
+	log.Info("device-manager-stopped")
+	return nil
+}
+
+func sendResponse(ctx context.Context, ch chan interface{}, result interface{}) {
+	if ctx.Err() == nil {
+		// Returned response only of the ctx has not been cancelled/timeout/etc
+		// Channel is automatically closed when a context is Done
+		ch <- result
+		log.Debugw("sendResponse", log.Fields{"result": result})
+	} else {
+		// Should the transaction be reverted back?
+		log.Debugw("sendResponse-context-error", log.Fields{"context-error": ctx.Err()})
+	}
+}
+
+func (so *SimulatedOLT) addDeviceHandlerToMap(agent *DeviceHandler) {
+	so.lockDeviceHandlersMap.Lock()
+	defer so.lockDeviceHandlersMap.Unlock()
+	if _, exist := so.deviceHandlers[agent.deviceId]; !exist {
+		so.deviceHandlers[agent.deviceId] = agent
+	}
+}
+
+func (so *SimulatedOLT) deleteDeviceHandlerToMap(agent *DeviceHandler) {
+	so.lockDeviceHandlersMap.Lock()
+	defer so.lockDeviceHandlersMap.Unlock()
+	delete(so.deviceHandlers, agent.deviceId)
+}
+
+func (so *SimulatedOLT) getDeviceHandler(deviceId string) *DeviceHandler {
+	so.lockDeviceHandlersMap.Lock()
+	defer so.lockDeviceHandlersMap.Unlock()
+	if agent, ok := so.deviceHandlers[deviceId]; ok {
+		return agent
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Adopt_device(device *voltha.Device) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Infow("adopt-device", log.Fields{"deviceId": device.Id})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler == nil {
+		handler := NewDeviceHandler(so.coreProxy, device, so)
+		so.addDeviceHandlerToMap(handler)
+		go handler.AdoptDevice(device)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Get_ofp_device_info(device *voltha.Device) (*ic.SwitchCapability, error) {
+	log.Infow("Get_ofp_device_info", log.Fields{"deviceId": device.Id})
+	if handler := so.getDeviceHandler(device.Id); handler != nil {
+		info, err := handler.GetOfpDeviceInfo(device)
+		log.Infow("Get_ofp_device_info-resp", log.Fields{"switch": info})
+		return info, err
+	}
+	log.Errorw("device-handler-not-set", log.Fields{"deviceId": device.Id})
+	return nil, errors.New("device-handler-not-set")
+}
+
+func (so *SimulatedOLT) Get_ofp_port_info(device *voltha.Device, port_no int64) (*ic.PortCapability, error) {
+	log.Infow("Get_ofp_port_info", log.Fields{"deviceId": device.Id})
+	if handler := so.getDeviceHandler(device.Id); handler != nil {
+		return handler.GetOfpPortInfo(device, port_no)
+	}
+	log.Errorw("device-handler-not-set", log.Fields{"deviceId": device.Id})
+	return nil, errors.New("device-handler-not-set")
+}
+
+func (so *SimulatedOLT) Process_inter_adapter_message(msg *ic.InterAdapterMessage) error {
+	log.Infow("Process_inter_adapter_message", log.Fields{"msgId": msg.Header.Id})
+	targetDevice := msg.Header.ProxyDeviceId // Request?
+	if targetDevice == "" && msg.Header.ToDeviceId != "" {
+		// Typical response
+		targetDevice = msg.Header.ToDeviceId
+	}
+	if handler := so.getDeviceHandler(targetDevice); handler != nil {
+		return handler.Process_inter_adapter_message(msg)
+	}
+	return errors.New(fmt.Sprintf("handler-not-found-%s", targetDevice))
+}
+
+func (so *SimulatedOLT) Adapter_descriptor() error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Device_types() (*voltha.DeviceTypes, error) {
+	return nil, errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Health() (*voltha.HealthStatus, error) {
+	return nil, errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Reconcile_device(device *voltha.Device) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Infow("reconcile-device", log.Fields{"deviceId": device.Id})
+	var handler *DeviceHandler
+	handler = so.getDeviceHandler(device.Id)
+	if handler == nil {
+		//	Adapter has restarted
+		handler = NewDeviceHandler(so.coreProxy, device, so)
+		so.addDeviceHandlerToMap(handler)
+	}
+	go handler.ReconcileDevice(device)
+	return nil
+}
+
+func (so *SimulatedOLT) Abandon_device(device *voltha.Device) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Disable_device(device *voltha.Device) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Infow("disable-device", log.Fields{"deviceId": device.Id})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler != nil {
+		go handler.DisableDevice(device)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Reenable_device(device *voltha.Device) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Infow("reenable-device", log.Fields{"deviceId": device.Id})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler != nil {
+		go handler.ReEnableDevice(device)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Reboot_device(device *voltha.Device) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Self_test_device(device *voltha.Device) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Delete_device(device *voltha.Device) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Infow("delete-device", log.Fields{"deviceId": device.Id})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler != nil {
+		go handler.DeleteDevice(device)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Get_device_details(device *voltha.Device) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Update_flows_bulk(device *voltha.Device, flows *voltha.Flows, groups *voltha.FlowGroups, metadata *voltha.FlowMetadata) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Debugw("bulk-flow-updates", log.Fields{"deviceId": device.Id, "flows": flows, "groups": groups})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler != nil {
+		go handler.UpdateFlowsBulk(device, flows, groups, metadata)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Update_flows_incrementally(device *voltha.Device, flowChanges *openflow_13.FlowChanges, groupChanges *openflow_13.FlowGroupChanges, metadata *voltha.FlowMetadata) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Debugw("incremental-flow-update", log.Fields{"deviceId": device.Id, "flowChanges": flowChanges, "groupChanges": groupChanges})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler != nil {
+		go handler.UpdateFlowsIncremental(device, flowChanges, groupChanges, metadata)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Update_pm_config(device *voltha.Device, pmConfigs *voltha.PmConfigs) error {
+	if device == nil {
+		log.Warn("device-is-nil")
+		return errors.New("nil-device")
+	}
+	log.Debugw("update_pm_config", log.Fields{"deviceId": device.Id, "pmConfigs": pmConfigs})
+	var handler *DeviceHandler
+	if handler = so.getDeviceHandler(device.Id); handler != nil {
+		go handler.UpdatePmConfigs(device, pmConfigs)
+	}
+	return nil
+}
+
+func (so *SimulatedOLT) Receive_packet_out(deviceId string, egress_port_no int, msg *openflow_13.OfpPacketOut) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Suppress_alarm(filter *voltha.AlarmFilter) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Unsuppress_alarm(filter *voltha.AlarmFilter) error {
+	return errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Download_image(device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
+	return nil, errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Get_image_download_status(device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
+	return nil, errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Cancel_image_download(device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
+	return nil, errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Activate_image_update(device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
+	return nil, errors.New("UnImplemented")
+}
+
+func (so *SimulatedOLT) Revert_image_update(device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
+	return nil, errors.New("UnImplemented")
+}