[GitHub] [ozone-go] elek commented on a change in pull request #6: HDDS-5085. Create initial project structure with importing POC code

[GitBox <gi...@apache.org>]

elek commented on a change in pull request #6:
URL: https://github.com/apache/ozone-go/pull/6#discussion_r617830983



##########
File path: api/datanode/datanode.go
##########
@@ -0,0 +1,261 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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 datanode
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	dnapi "github.com/apache/ozone-go/api/proto/datanode"
+	"github.com/apache/ozone-go/api/proto/hdds"
+	"github.com/apache/ozone-go/api/proto/ratis"
+	"google.golang.org/grpc"
+	"io"
+	"strconv"
+)
+
+type ChunkInfo struct {
+	Name   string
+	Offset uint64
+	Len    uint64
+}
+
+type DatanodeClient struct {
+	ratisClient        *ratis.RaftClientProtocolService_UnorderedClient
+	ratisReceiver      chan ratis.RaftClientReplyProto
+	standaloneClient   *dnapi.XceiverClientProtocolService_SendClient
+	standaloneReceiver chan dnapi.ContainerCommandResponseProto
+
+	ctx             context.Context
+	datanodes       []*hdds.DatanodeDetailsProto
+	currentDatanode hdds.DatanodeDetailsProto
+	grpcConnection  *grpc.ClientConn
+	pipelineId      *hdds.PipelineID
+	memberIndex     int
+}
+
+func (dn *DatanodeClient) GetCurrentDnUUid() *string {
+	uid := dn.currentDatanode.GetUuid()
+	return &uid
+}
+
+func (dnClient *DatanodeClient) connectToNext() error {
+	if dnClient.grpcConnection != nil {
+		dnClient.grpcConnection.Close()
+	}
+	dnClient.memberIndex = dnClient.memberIndex + 1
+	if dnClient.memberIndex == len(dnClient.datanodes) {
+		dnClient.memberIndex = 0
+	}
+	selectedDatanode := dnClient.datanodes[dnClient.memberIndex]
+	dnClient.currentDatanode = *selectedDatanode
+
+	standalonePort := 0
+	for _, port := range dnClient.currentDatanode.Ports {
+		if *port.Name == "STANDALONE" {
+			standalonePort = int(*port.Value)
+		}
+	}
+
+	address := *dnClient.currentDatanode.IpAddress + ":" + strconv.Itoa(standalonePort)
+	println("Connecting to the " + address)
+	conn, err := grpc.Dial(address, grpc.WithInsecure(), grpc.WithBlock())
+	if err != nil {
+		return err
+	}
+
+	dnClient.ratisReceiver = make(chan ratis.RaftClientReplyProto)
+	dnClient.standaloneReceiver = make(chan dnapi.ContainerCommandResponseProto)
+
+	client, err := dnapi.NewXceiverClientProtocolServiceClient(conn).Send(dnClient.ctx)
+	dnClient.standaloneClient = &client
+	//
+	//client, err := ratis.NewRaftClientProtocolServiceClient(conn).Unordered(dnClient.ctx)
+	//if err != nil {
+	//	panic(err)
+	//}
+	//dnClient.ratisClient = &client
+	//go dnClient.RaftReceiver()

Review comment:
       Sure, it can definitely be removed. I am pushing the fix.




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