Go Native API

Dependencies

• golang >= 1.13
• make >= 3.0
• curl >= 7.1.1
• thrift 0.13.x
• Linux、Macos or other unix-like systems
• Windows+bash (WSL、cygwin、Git Bash)

Installation

• go mod

export GO111MODULE=on
export GOPROXY=https://goproxy.io

mkdir session_example && cd session_example

curl -o session_example.go -L https://github.com/apache/iotdb-client-go/raw/main/example/session_example.go

go mod init session_example
go run session_example.go

• GOPATH

# get thrift 0.13.0
go get github.com/apache/thrift
cd $GOPATH/src/github.com/apache/thrift
git checkout 0.13.0

mkdir -p $GOPATH/src/iotdb-client-go-example/session_example
cd $GOPATH/src/iotdb-client-go-example/session_example
curl -o session_example.go -L https://github.com/apache/iotdb-client-go/raw/main/example/session_example.go
go run session_example.go

How to Use the SessionPool

SessionPool is a wrapper of a Session Set. Using SessionPool, the user do not need to consider how to reuse a session connection. If there is no available connections and the pool reaches its max size, the all methods will hang until there is a available connection. The PutBack method must be called after use

New sessionPool

config := &client.PoolConfig{
    Host:     host,
    Port:     port,
    UserName: user,
    Password: password,
}
sessionPool = client.NewSessionPool(config, 3, 60000, 60000, false)

Get session through sessionPool, putback after use

set storage group

session, err := sessionPool.GetSession()
defer sessionPool.PutBack(session)
if err == nil {
    session.SetStorageGroup(sg)
}

query statement

var timeout int64 = 1000
session, err := sessionPool.GetSession()
defer sessionPool.PutBack(session)
if err != nil {
    log.Print(err)
    return
}
sessionDataSet, err := session.ExecuteQueryStatement(sql, &timeout)
if err == nil {
    defer sessionDataSet.Close()
    printDataSet1(sessionDataSet)
} else {
    log.Println(err)
}