onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 3 | * |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 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 |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 7 | * |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 9 | * |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 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 | |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 17 | // Implements a client for nem-ondemend-proxy. |
| 18 | package proxy |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 19 | |
| 20 | import ( |
| 21 | "context" |
| 22 | "encoding/json" |
| 23 | "fmt" |
| 24 | "github.com/Shopify/sarama" |
| 25 | "github.com/golang/protobuf/proto" |
| 26 | "github.com/google/uuid" |
| 27 | pb "github.com/opencord/voltha-protos/v3/go/voltha" |
| 28 | "google.golang.org/grpc" |
| 29 | "log" |
| 30 | "time" |
| 31 | ) |
| 32 | |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 33 | /* |
| 34 | * TODO: Consider refactoring so that the kafka and grpc clients are |
| 35 | * initialized once rather than for each request that is handled. |
| 36 | * |
| 37 | */ |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 38 | |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 39 | type OnDemandHandler struct { |
| 40 | } |
| 41 | |
| 42 | func NewOnDemandHandler() *OnDemandHandler { |
| 43 | var handler OnDemandHandler |
| 44 | return &handler |
| 45 | } |
| 46 | |
| 47 | func (handler *OnDemandHandler) HandleRequest(device_id *string) (*pb.Event, error) { |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 48 | // Set up a connection to the server. |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 49 | log.Printf("voltha grpc client started, address=%s ...", GlobalConfig.Server) |
| 50 | conn, err := grpc.Dial(GlobalConfig.Server, grpc.WithInsecure(), grpc.WithBlock()) |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 51 | if err != nil { |
| 52 | log.Printf("did not connect: %v", err) |
| 53 | return nil, err |
| 54 | } |
| 55 | defer conn.Close() |
| 56 | c := pb.NewVolthaServiceClient(conn) |
| 57 | id, err := uuid.NewUUID() |
| 58 | log.Printf("ID: %s", id.String()) |
| 59 | if err != nil { |
| 60 | log.Printf("did not generate uuid: %v", err) |
| 61 | return nil, err |
| 62 | } |
| 63 | ctx, cancel := context.WithTimeout(context.Background(), time.Second) |
| 64 | defer cancel() |
| 65 | log.Printf("Calling StartOmciTestAction") |
| 66 | r, err := c.StartOmciTestAction(ctx, &pb.OmciTestRequest{Id: *device_id, Uuid: id.String()}) |
| 67 | if err != nil { |
| 68 | return nil, fmt.Errorf("start-omci-test-action-failed: %v", err) |
| 69 | } |
| 70 | log.Printf("Result: %s", r.Result) |
| 71 | djson, _ := json.Marshal(r.Result) |
| 72 | result := &pb.Event{} |
| 73 | if string(djson) == "0" { |
| 74 | config := sarama.NewConfig() |
| 75 | config.ClientID = "go-kafka-consumer" |
| 76 | config.Consumer.Return.Errors = true |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 77 | |
| 78 | brokers := []string{GlobalConfig.Kafka} |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 79 | // Create new consumer |
| 80 | master, err := sarama.NewConsumer(brokers, config) |
| 81 | if err != nil { |
| 82 | panic(err) |
| 83 | } |
| 84 | defer func() { |
| 85 | if err := master.Close(); err != nil { |
| 86 | panic(err) |
| 87 | } |
| 88 | }() |
| 89 | |
| 90 | topic := "voltha.events" |
| 91 | consumer, err := master.ConsumePartition(topic, 0, sarama.OffsetNewest) |
| 92 | if err != nil { |
| 93 | panic(err) |
| 94 | } |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 95 | |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 96 | // Get signnal for finish |
| 97 | doneCh := make(chan struct{}) |
| 98 | go func() { |
Scott Baker | f04b639 | 2020-03-20 08:29:46 -0700 | [diff] [blame] | 99 | // TODO: Needs a timeout in here |
onkarkundargi | 72cfd36 | 2020-02-27 12:34:37 +0530 | [diff] [blame] | 100 | for { |
| 101 | select { |
| 102 | case err := <-consumer.Errors(): |
| 103 | fmt.Println(err) |
| 104 | case msg := <-consumer.Messages(): |
| 105 | unpackResult := &pb.Event{} |
| 106 | var err error |
| 107 | if err = proto.Unmarshal(msg.Value, unpackResult); err != nil { |
| 108 | fmt.Println("Error while doing unmarshal", err) |
| 109 | } |
| 110 | kpi_event2 := unpackResult.GetKpiEvent2() |
| 111 | if (kpi_event2 != nil) && (kpi_event2.SliceData[0].Metadata.Uuid == id.String()) { |
| 112 | result = unpackResult |
| 113 | close(doneCh) |
| 114 | return |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | }() |
| 119 | <-doneCh |
| 120 | log.Printf("Result: %s", result) |
| 121 | } |
| 122 | return result, nil |
| 123 | } |