Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package core |
| 17 | |
| 18 | import ( |
| 19 | "context" |
| 20 | "github.com/opencord/voltha-go/common/log" |
| 21 | "github.com/opencord/voltha-go/db/model" |
William Kurkian | daa6bb2 | 2019-03-07 12:26:28 -0500 | [diff] [blame] | 22 | "github.com/opencord/voltha-protos/go/voltha" |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 23 | "google.golang.org/grpc/codes" |
| 24 | "google.golang.org/grpc/status" |
| 25 | "sync" |
| 26 | ) |
| 27 | |
| 28 | type LogicalDeviceManager struct { |
| 29 | logicalDeviceAgents map[string]*LogicalDeviceAgent |
| 30 | deviceMgr *DeviceManager |
| 31 | grpcNbiHdlr *APIHandler |
| 32 | clusterDataProxy *model.Proxy |
| 33 | exitChannel chan int |
| 34 | lockLogicalDeviceAgentsMap sync.RWMutex |
| 35 | } |
| 36 | |
| 37 | func newLogicalDeviceManager(deviceMgr *DeviceManager, cdProxy *model.Proxy) *LogicalDeviceManager { |
| 38 | var logicalDeviceMgr LogicalDeviceManager |
| 39 | logicalDeviceMgr.exitChannel = make(chan int, 1) |
| 40 | logicalDeviceMgr.logicalDeviceAgents = make(map[string]*LogicalDeviceAgent) |
| 41 | logicalDeviceMgr.deviceMgr = deviceMgr |
| 42 | logicalDeviceMgr.clusterDataProxy = cdProxy |
| 43 | logicalDeviceMgr.lockLogicalDeviceAgentsMap = sync.RWMutex{} |
| 44 | return &logicalDeviceMgr |
| 45 | } |
| 46 | |
| 47 | func (ldMgr *LogicalDeviceManager) setGrpcNbiHandler(grpcNbiHandler *APIHandler) { |
| 48 | ldMgr.grpcNbiHdlr = grpcNbiHandler |
| 49 | } |
| 50 | |
| 51 | func (ldMgr *LogicalDeviceManager) start(ctx context.Context) { |
| 52 | log.Info("starting-logical-device-manager") |
| 53 | log.Info("logical-device-manager-started") |
| 54 | } |
| 55 | |
| 56 | func (ldMgr *LogicalDeviceManager) stop(ctx context.Context) { |
| 57 | log.Info("stopping-logical-device-manager") |
| 58 | ldMgr.exitChannel <- 1 |
| 59 | log.Info("logical-device-manager-stopped") |
| 60 | } |
| 61 | |
| 62 | func (ldMgr *LogicalDeviceManager) addLogicalDeviceAgentToMap(agent *LogicalDeviceAgent) { |
| 63 | ldMgr.lockLogicalDeviceAgentsMap.Lock() |
| 64 | defer ldMgr.lockLogicalDeviceAgentsMap.Unlock() |
| 65 | if _, exist := ldMgr.logicalDeviceAgents[agent.logicalDeviceId]; !exist { |
| 66 | ldMgr.logicalDeviceAgents[agent.logicalDeviceId] = agent |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | func (ldMgr *LogicalDeviceManager) getLogicalDeviceAgent(logicalDeviceId string) *LogicalDeviceAgent { |
| 71 | ldMgr.lockLogicalDeviceAgentsMap.Lock() |
| 72 | defer ldMgr.lockLogicalDeviceAgentsMap.Unlock() |
| 73 | if agent, ok := ldMgr.logicalDeviceAgents[logicalDeviceId]; ok { |
| 74 | return agent |
| 75 | } |
| 76 | return nil |
| 77 | } |
| 78 | |
| 79 | func (ldMgr *LogicalDeviceManager) deleteLogicalDeviceAgent(logicalDeviceId string) { |
| 80 | ldMgr.lockLogicalDeviceAgentsMap.Lock() |
| 81 | defer ldMgr.lockLogicalDeviceAgentsMap.Unlock() |
| 82 | delete(ldMgr.logicalDeviceAgents, logicalDeviceId) |
| 83 | } |
| 84 | |
| 85 | // GetLogicalDevice provides a cloned most up to date logical device |
| 86 | func (ldMgr *LogicalDeviceManager) getLogicalDevice(id string) (*voltha.LogicalDevice, error) { |
| 87 | log.Debugw("getlogicalDevice", log.Fields{"logicaldeviceid": id}) |
| 88 | if agent := ldMgr.getLogicalDeviceAgent(id); agent != nil { |
| 89 | return agent.GetLogicalDevice() |
| 90 | } |
| 91 | return nil, status.Errorf(codes.NotFound, "%s", id) |
| 92 | } |
| 93 | |
Stephane Barbarie | 1e28f3e | 2019-02-08 15:45:20 -0500 | [diff] [blame] | 94 | func (ldMgr *LogicalDeviceManager) IsLogicalDeviceInCache(id string) bool { |
| 95 | ldMgr.lockLogicalDeviceAgentsMap.Lock() |
| 96 | defer ldMgr.lockLogicalDeviceAgentsMap.Unlock() |
| 97 | _, exist := ldMgr.logicalDeviceAgents[id] |
| 98 | return exist |
| 99 | } |
| 100 | |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 101 | func (ldMgr *LogicalDeviceManager) listLogicalDevices() (*voltha.LogicalDevices, error) { |
| 102 | log.Debug("ListAllLogicalDevices") |
| 103 | result := &voltha.LogicalDevices{} |
Stephane Barbarie | 1e28f3e | 2019-02-08 15:45:20 -0500 | [diff] [blame] | 104 | if logicalDevices := ldMgr.clusterDataProxy.List("/logical_devices", 0, false, ""); logicalDevices != nil { |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 105 | for _, logicalDevice := range logicalDevices.([]interface{}) { |
Stephane Barbarie | 1e28f3e | 2019-02-08 15:45:20 -0500 | [diff] [blame] | 106 | // If device is not in memory then set it up |
| 107 | if !ldMgr.IsLogicalDeviceInCache(logicalDevice.(*voltha.LogicalDevice).Id) { |
| 108 | agent := newLogicalDeviceAgent( |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 109 | logicalDevice.(*voltha.LogicalDevice).Id, |
| 110 | logicalDevice.(*voltha.LogicalDevice).RootDeviceId, |
| 111 | ldMgr, |
| 112 | ldMgr.deviceMgr, |
| 113 | ldMgr.clusterDataProxy, |
| 114 | ) |
Stephane Barbarie | 1e28f3e | 2019-02-08 15:45:20 -0500 | [diff] [blame] | 115 | if err := agent.start(nil, true); err != nil { |
| 116 | log.Warnw("failure-starting-agent", log.Fields{"logicalDeviceId": logicalDevice.(*voltha.LogicalDevice).Id}) |
| 117 | agent.stop(nil) |
| 118 | } else { |
| 119 | ldMgr.addLogicalDeviceAgentToMap(agent) |
| 120 | } |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 121 | } |
| 122 | result.Items = append(result.Items, logicalDevice.(*voltha.LogicalDevice)) |
| 123 | } |
| 124 | } |
| 125 | return result, nil |
| 126 | } |
| 127 | |
Stephane Barbarie | 1e28f3e | 2019-02-08 15:45:20 -0500 | [diff] [blame] | 128 | // load loads a logical device manager in memory |
| 129 | func (ldMgr *LogicalDeviceManager) load(lDeviceId string) error { |
| 130 | log.Debugw("loading-logical-device", log.Fields{"lDeviceId": lDeviceId}) |
| 131 | // To prevent a race condition, let's hold the logical device agent map lock. This will prevent a loading and |
| 132 | // a create logical device callback from occurring at the same time. |
| 133 | ldMgr.lockLogicalDeviceAgentsMap.Lock() |
| 134 | defer ldMgr.lockLogicalDeviceAgentsMap.Unlock() |
| 135 | if ldAgent, _ := ldMgr.logicalDeviceAgents[lDeviceId]; ldAgent == nil { |
| 136 | // Logical device not in memory - create a temp logical device Agent and let it load from memory |
| 137 | agent := newLogicalDeviceAgent(lDeviceId, "", ldMgr, ldMgr.deviceMgr, ldMgr.clusterDataProxy) |
| 138 | if err := agent.start(nil, true); err != nil { |
| 139 | agent.stop(nil) |
| 140 | return err |
| 141 | } |
| 142 | ldMgr.logicalDeviceAgents[agent.logicalDeviceId] = agent |
| 143 | } |
| 144 | // TODO: load the child device |
| 145 | return nil |
| 146 | } |
| 147 | |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 148 | func (ldMgr *LogicalDeviceManager) getLogicalDeviceId(device *voltha.Device) (*string, error) { |
| 149 | // Device can either be a parent or a child device |
| 150 | if device.Root { |
| 151 | // Parent device. The ID of a parent device is the logical device ID |
| 152 | return &device.ParentId, nil |
| 153 | } |
| 154 | // Device is child device |
| 155 | // retrieve parent device using child device ID |
| 156 | if parentDevice := ldMgr.deviceMgr.getParentDevice(device); parentDevice != nil { |
| 157 | return &parentDevice.ParentId, nil |
| 158 | } |
| 159 | return nil, status.Errorf(codes.NotFound, "%s", device.Id) |
| 160 | } |
| 161 | |
| 162 | func (ldMgr *LogicalDeviceManager) getLogicalPortId(device *voltha.Device) (*voltha.LogicalPortId, error) { |
| 163 | // Get the logical device where this device is attached |
| 164 | var lDeviceId *string |
| 165 | var err error |
| 166 | if lDeviceId, err = ldMgr.getLogicalDeviceId(device); err != nil { |
| 167 | return nil, err |
| 168 | } |
| 169 | var lDevice *voltha.LogicalDevice |
| 170 | if lDevice, err = ldMgr.getLogicalDevice(*lDeviceId); err != nil { |
| 171 | return nil, err |
| 172 | } |
| 173 | // Go over list of ports |
| 174 | for _, port := range lDevice.Ports { |
| 175 | if port.DeviceId == device.Id { |
| 176 | return &voltha.LogicalPortId{Id: *lDeviceId, PortId: port.Id}, nil |
| 177 | } |
| 178 | } |
| 179 | return nil, status.Errorf(codes.NotFound, "%s", device.Id) |
| 180 | } |
| 181 | |
| 182 | func (ldMgr *LogicalDeviceManager) ListLogicalDevicePorts(ctx context.Context, id string) (*voltha.LogicalPorts, error) { |
| 183 | log.Debugw("ListLogicalDevicePorts", log.Fields{"logicaldeviceid": id}) |
| 184 | if agent := ldMgr.getLogicalDeviceAgent(id); agent != nil { |
| 185 | return agent.ListLogicalDevicePorts() |
| 186 | } |
| 187 | return nil, status.Errorf(codes.NotFound, "%s", id) |
| 188 | |
| 189 | } |
| 190 | |
| 191 | func (ldMgr *LogicalDeviceManager) ListLogicalDeviceFlows(ctx context.Context, id string) (*voltha.Flows, error) { |
| 192 | log.Debugw("ListLogicalDeviceFlows", log.Fields{"logicaldeviceid": id}) |
| 193 | if agent := ldMgr.getLogicalDeviceAgent(id); agent != nil { |
| 194 | return agent.ListLogicalDeviceFlows() |
| 195 | } |
| 196 | return nil, status.Errorf(codes.NotFound, "%s", id) |
| 197 | |
| 198 | } |
| 199 | |
| 200 | func (ldMgr *LogicalDeviceManager) ListLogicalDeviceFlowGroups(ctx context.Context, id string) (*voltha.FlowGroups, error) { |
| 201 | log.Debugw("ListLogicalDeviceFlowGroups", log.Fields{"logicaldeviceid": id}) |
| 202 | if agent := ldMgr.getLogicalDeviceAgent(id); agent != nil { |
| 203 | return agent.ListLogicalDeviceFlowGroups() |
| 204 | } |
| 205 | return nil, status.Errorf(codes.NotFound, "%s", id) |
| 206 | |
| 207 | } |
| 208 | |
| 209 | func (ldMgr *LogicalDeviceManager) getLogicalPort(lPortId *voltha.LogicalPortId) (*voltha.LogicalPort, error) { |
| 210 | // Get the logical device where this device is attached |
| 211 | var err error |
| 212 | var lDevice *voltha.LogicalDevice |
| 213 | if lDevice, err = ldMgr.getLogicalDevice(lPortId.Id); err != nil { |
| 214 | return nil, err |
| 215 | } |
| 216 | // Go over list of ports |
| 217 | for _, port := range lDevice.Ports { |
| 218 | if port.Id == lPortId.PortId { |
| 219 | return port, nil |
| 220 | } |
| 221 | } |
Kent Hagerman | 0ab4cb2 | 2019-04-24 13:13:35 -0400 | [diff] [blame] | 222 | return nil, status.Errorf(codes.NotFound, "%s-%s", lPortId.Id, lPortId.PortId) |
Stephane Barbarie | a75791c | 2019-01-24 10:58:06 -0500 | [diff] [blame] | 223 | } |