Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 1 | // Copyright 2018 Open Networking Foundation |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package main |
| 16 | |
| 17 | import ( |
| 18 | "fmt" |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 19 | "net" |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 20 | "net/http" |
Dinesh Belwalkar | 8af8d7d | 2019-05-29 21:00:50 +0000 | [diff] [blame] | 21 | "os" |
| 22 | "os/signal" |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 23 | "io/ioutil" |
| 24 | "github.com/Shopify/sarama" |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 25 | "google.golang.org/grpc" |
| 26 | "golang.org/x/net/context" |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 27 | "crypto/tls" |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 28 | empty "github.com/golang/protobuf/ptypes/empty" |
| 29 | importer "./proto" |
Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 30 | ) |
| 31 | |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 32 | var ( |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 33 | importerTopic = "importer" |
| 34 | |
| 35 | ) |
| 36 | |
| 37 | var DataProducer sarama.AsyncProducer |
| 38 | |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 39 | var default_events = [...]string{"ResourceAdded","ResourceRemoved","Alert"} |
| 40 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 41 | type device struct { |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 42 | subscriptions map[string]uint |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 43 | freq uint32 |
| 44 | } |
| 45 | |
| 46 | type Server struct { |
| 47 | devicemap map[string]*device |
| 48 | gRPCserver *grpc.Server |
| 49 | dataproducer sarama.AsyncProducer |
| 50 | devicechan chan *importer.DeviceInfo |
| 51 | } |
| 52 | |
| 53 | func (s *Server) SendDeviceInfo(c context.Context, info *importer.DeviceInfo) (*empty.Empty, error) { |
| 54 | d := device { |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 55 | subscriptions: make(map[string]uint), |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 56 | freq: info.Frequency, |
| 57 | } |
| 58 | s.devicemap[info.IpAddress] = &d |
| 59 | s.devicechan <- info |
| 60 | return &empty.Empty{}, nil |
| 61 | } |
| 62 | func(s *Server) subscribeevents() { |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 63 | http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true} |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 64 | for { |
| 65 | select { |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 66 | case info:= <-s.devicechan: |
| 67 | ip_address:= info.IpAddress |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 68 | fmt.Println("Configuring %s ...", ip_address) |
| 69 | // call subscription function with info.IpAddress |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 70 | for _, event := range default_events { |
| 71 | rtn, id := add_subscription(ip_address, event) |
| 72 | if rtn { |
| 73 | s.devicemap[ip_address].subscriptions[event] = id |
| 74 | fmt.Println("subscription added", event, id) |
| 75 | } |
| 76 | } |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 77 | } |
| 78 | } |
| 79 | } |
mc | 6a9f01a | 2019-06-26 21:31:23 +0000 | [diff] [blame^] | 80 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 81 | func NewGrpcServer(grpcport string) (l net.Listener, g *grpc.Server, e error) { |
| 82 | fmt.Println("Listening %s ...", grpcport) |
| 83 | g = grpc.NewServer() |
| 84 | l, e = net.Listen("tcp", grpcport) |
| 85 | return |
| 86 | } |
| 87 | func (s *Server) startgrpcserver()error { |
| 88 | fmt.Println("starting gRPC Server") |
| 89 | grpcport := ":50051" |
| 90 | listener, gserver, err := NewGrpcServer(grpcport) |
| 91 | if err != nil { |
| 92 | fmt.Println("Failed to create gRPC server: %v", err) |
| 93 | return err |
| 94 | } |
| 95 | s.gRPCserver = gserver |
| 96 | importer.RegisterDeviceManagementServer(gserver, s) |
| 97 | if err := gserver.Serve(listener); err != nil { |
| 98 | fmt.Println("Failed to run gRPC server: %v", err) |
| 99 | return err |
| 100 | } |
| 101 | return nil |
| 102 | |
| 103 | } |
| 104 | func (s *Server) kafkaInit() { |
| 105 | fmt.Println("Starting kafka init to Connect to broker: ") |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 106 | config := sarama.NewConfig() |
| 107 | config.Producer.RequiredAcks = sarama.WaitForAll |
| 108 | config.Producer.Retry.Max = 10 |
| 109 | config.Producer.Return.Successes = true |
| 110 | producer, err := sarama.NewAsyncProducer([]string{"cord-kafka.default.svc.cluster.local:9092"}, config) |
| 111 | if err != nil { |
| 112 | panic(err) |
| 113 | } |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 114 | s.dataproducer = producer |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 115 | defer func() { |
| 116 | if err := producer.Close(); err != nil { |
| 117 | panic(err) |
| 118 | } |
| 119 | }() |
| 120 | } |
| 121 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 122 | func (s *Server) handle_events(w http.ResponseWriter, r *http.Request) { |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 123 | signals := make(chan os.Signal, 1) |
| 124 | signal.Notify(signals, os.Interrupt) |
| 125 | |
| 126 | if(r.Method == "POST"){ |
| 127 | Body, err := ioutil.ReadAll(r.Body) |
| 128 | if err != nil { |
| 129 | fmt.Println("Error getting HTTP data",err) |
| 130 | } |
| 131 | defer r.Body.Close() |
| 132 | fmt.Printf("%s\n",Body) |
| 133 | message :=&sarama.ProducerMessage{ |
| 134 | Topic: importerTopic, |
| 135 | Value: sarama.StringEncoder(Body), |
| 136 | } |
| 137 | select { |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 138 | case s.dataproducer.Input() <- message: |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 139 | |
| 140 | case <-signals: |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 141 | s.dataproducer.AsyncClose() // Trigger a shutdown of the producer. |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 146 | func (s *Server) runServer() { |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 147 | fmt.Println("Starting HTTP Server") |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 148 | http.HandleFunc("/", s.handle_events) |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 149 | http.ListenAndServe(":8080", nil) |
| 150 | } |
| 151 | |
| 152 | func init() { |
| 153 | fmt.Println("Connecting to broker: ") |
| 154 | fmt.Println("Listening to http server") |
| 155 | } |
| 156 | |
| 157 | |
Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 158 | func main() { |
| 159 | fmt.Println("Starting Device-management Container") |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame] | 160 | s := Server { |
| 161 | devicemap: make(map[string]*device), |
| 162 | devicechan: make(chan *importer.DeviceInfo), |
| 163 | } |
| 164 | go s.kafkaInit() |
| 165 | go s.runServer() |
| 166 | go s.startgrpcserver() |
| 167 | go s.subscribeevents() |
Dinesh Belwalkar | 8af8d7d | 2019-05-29 21:00:50 +0000 | [diff] [blame] | 168 | quit := make(chan os.Signal) |
| 169 | signal.Notify(quit, os.Interrupt) |
| 170 | |
| 171 | select { |
| 172 | case sig := <-quit: |
| 173 | fmt.Println("Shutting down:", sig) |
| 174 | } |
Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 175 | } |