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" |
| 27 | empty "github.com/golang/protobuf/ptypes/empty" |
| 28 | importer "./proto" |
Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 29 | ) |
| 30 | |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 31 | var ( |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 32 | importerTopic = "importer" |
| 33 | |
| 34 | ) |
| 35 | |
| 36 | var DataProducer sarama.AsyncProducer |
| 37 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 38 | type device struct { |
| 39 | subscription []string |
| 40 | freq uint32 |
| 41 | } |
| 42 | |
| 43 | type Server struct { |
| 44 | devicemap map[string]*device |
| 45 | gRPCserver *grpc.Server |
| 46 | dataproducer sarama.AsyncProducer |
| 47 | devicechan chan *importer.DeviceInfo |
| 48 | } |
| 49 | |
| 50 | func (s *Server) SendDeviceInfo(c context.Context, info *importer.DeviceInfo) (*empty.Empty, error) { |
| 51 | d := device { |
| 52 | freq: info.Frequency, |
| 53 | } |
| 54 | s.devicemap[info.IpAddress] = &d |
| 55 | s.devicechan <- info |
| 56 | return &empty.Empty{}, nil |
| 57 | } |
| 58 | func(s *Server) subscribeevents() { |
| 59 | for { |
| 60 | select { |
| 61 | case info:= <-s.devicechan: |
| 62 | ip_address:= info.IpAddress |
| 63 | fmt.Println("Configuring %s ...", ip_address) |
| 64 | // call subscription function with info.IpAddress |
| 65 | } |
| 66 | } |
| 67 | } |
| 68 | func NewGrpcServer(grpcport string) (l net.Listener, g *grpc.Server, e error) { |
| 69 | fmt.Println("Listening %s ...", grpcport) |
| 70 | g = grpc.NewServer() |
| 71 | l, e = net.Listen("tcp", grpcport) |
| 72 | return |
| 73 | } |
| 74 | func (s *Server) startgrpcserver()error { |
| 75 | fmt.Println("starting gRPC Server") |
| 76 | grpcport := ":50051" |
| 77 | listener, gserver, err := NewGrpcServer(grpcport) |
| 78 | if err != nil { |
| 79 | fmt.Println("Failed to create gRPC server: %v", err) |
| 80 | return err |
| 81 | } |
| 82 | s.gRPCserver = gserver |
| 83 | importer.RegisterDeviceManagementServer(gserver, s) |
| 84 | if err := gserver.Serve(listener); err != nil { |
| 85 | fmt.Println("Failed to run gRPC server: %v", err) |
| 86 | return err |
| 87 | } |
| 88 | return nil |
| 89 | |
| 90 | } |
| 91 | func (s *Server) kafkaInit() { |
| 92 | fmt.Println("Starting kafka init to Connect to broker: ") |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 93 | config := sarama.NewConfig() |
| 94 | config.Producer.RequiredAcks = sarama.WaitForAll |
| 95 | config.Producer.Retry.Max = 10 |
| 96 | config.Producer.Return.Successes = true |
| 97 | producer, err := sarama.NewAsyncProducer([]string{"cord-kafka.default.svc.cluster.local:9092"}, config) |
| 98 | if err != nil { |
| 99 | panic(err) |
| 100 | } |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 101 | s.dataproducer = producer |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 102 | defer func() { |
| 103 | if err := producer.Close(); err != nil { |
| 104 | panic(err) |
| 105 | } |
| 106 | }() |
| 107 | } |
| 108 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 109 | func (s *Server) handle_events(w http.ResponseWriter, r *http.Request) { |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 110 | signals := make(chan os.Signal, 1) |
| 111 | signal.Notify(signals, os.Interrupt) |
| 112 | |
| 113 | if(r.Method == "POST"){ |
| 114 | Body, err := ioutil.ReadAll(r.Body) |
| 115 | if err != nil { |
| 116 | fmt.Println("Error getting HTTP data",err) |
| 117 | } |
| 118 | defer r.Body.Close() |
| 119 | fmt.Printf("%s\n",Body) |
| 120 | message :=&sarama.ProducerMessage{ |
| 121 | Topic: importerTopic, |
| 122 | Value: sarama.StringEncoder(Body), |
| 123 | } |
| 124 | select { |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 125 | case s.dataproducer.Input() <- message: |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 126 | |
| 127 | case <-signals: |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 128 | s.dataproducer.AsyncClose() // Trigger a shutdown of the producer. |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 133 | func (s *Server) runServer() { |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 134 | fmt.Println("Starting HTTP Server") |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 135 | http.HandleFunc("/", s.handle_events) |
Dinesh Belwalkar | b6b2b30 | 2019-06-06 17:30:44 +0000 | [diff] [blame] | 136 | http.ListenAndServe(":8080", nil) |
| 137 | } |
| 138 | |
| 139 | func init() { |
| 140 | fmt.Println("Connecting to broker: ") |
| 141 | fmt.Println("Listening to http server") |
| 142 | } |
| 143 | |
| 144 | |
Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 145 | func main() { |
| 146 | fmt.Println("Starting Device-management Container") |
Dinesh Belwalkar | 4122960 | 2019-06-21 16:58:06 +0000 | [diff] [blame^] | 147 | s := Server { |
| 148 | devicemap: make(map[string]*device), |
| 149 | devicechan: make(chan *importer.DeviceInfo), |
| 150 | } |
| 151 | go s.kafkaInit() |
| 152 | go s.runServer() |
| 153 | go s.startgrpcserver() |
| 154 | go s.subscribeevents() |
Dinesh Belwalkar | 8af8d7d | 2019-05-29 21:00:50 +0000 | [diff] [blame] | 155 | quit := make(chan os.Signal) |
| 156 | signal.Notify(quit, os.Interrupt) |
| 157 | |
| 158 | select { |
| 159 | case sig := <-quit: |
| 160 | fmt.Println("Shutting down:", sig) |
| 161 | } |
Dinesh Belwalkar | 0121796 | 2019-05-23 21:51:16 +0000 | [diff] [blame] | 162 | } |