英文:
Missing symbols when importing `github.com/influxdb/influxdb/client/v2` package
问题
在Google Cloud上使用Golang设置Web Socket,并导入在本地机器上正常工作的代码,在云端无法正常工作。
我已经执行了以下操作:
import "github.com/influxdb/influxdb/client/v2"
并运行了
go get "github.com/influxdb/influxdb/client/v2"
运行go run server.go后,我得到了以下错误:
# command-line-arguments
./pi_server.go:47: undefined: client.NewClient
./pi_server.go:47: undefined: client.Config
以下是完整的代码,不包括常量声明和HTML部分:
package main
import (
"flag"
"html/template"
"log"
"net/http"
"github.com/gorilla/websocket"
"fmt"
"net/url"
"github.com/influxdb/influxdb/client/v2"
"time"
)
var addr = flag.String("addr", "localhost:8080", "http service address")
var upgrader = websocket.Upgrader{} // use default options
func echo(w http.ResponseWriter, r *http.Request) {
//Influx init
u,err := url.Parse("http://localhost:8086")
checkError(err)
influx_c := client.NewClient(client.Config{
URL: u,
Username: username,
Password: password,
})
bp,err := client.NewBatchPoints(client.BatchPointsConfig{
Database: MyDB,
Precision: "s",
})
tags := map[string]string{"my_sensor_id": my_sensor_id}
//end influx init
c, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Print("upgrade:", err)
return
}
defer c.Close()
for {
mt, message, err := c.ReadMessage()
if err != nil {
log.Println("read:", err)
break
}
log.Printf("recv: %s", message)
/*
write to influx here
*/
fields := map[string]interface{}{
"random_int": message,
"other_stuff": 69696,
}
pt,err := client.NewPoint("test_collection", tags, fields, time.Now())
checkError(err)
bp.AddPoint(pt)
influx_c.Write(bp)
err = c.WriteMessage(mt, message)
if err != nil {
log.Println("write:", err)
break
}
}
}
func home(w http.ResponseWriter, r *http.Request) {
homeTemplate.Execute(w, "ws://"+r.Host+"/echo", )
}
func main() {
flag.Parse()
log.SetFlags(0)
http.HandleFunc("/echo", echo)
http.HandleFunc("/", home)
log.Fatal(http.ListenAndServe(*addr, nil))
}
请注意,你需要根据你的实际情况进行适当的配置和更改。
英文:
Setting up a web socket on google cloud in Golang, and import code that works fine on my local machine does not work on the cloud.
I have:
import "github.com/influxdb/influxdb/client/v2"
and have run
go get "github.com/influxdb/influxdb/client/v2"
Upon running go run server.go I get:
# command-line-arguments
./pi_server.go:47: undefined: client.NewClient
./pi_server.go:47: undefined: client.Config
Full code below, excluding const declarations and html:
package main
import (
"flag"
"html/template"
"log"
"net/http"
"github.com/gorilla/websocket"
"fmt"
"net/url"
"github.com/influxdb/influxdb/client/v2"
"time"
)
var addr = flag.String("addr", "localhost:8080", "http service address")
var upgrader = websocket.Upgrader{} // use default options
func echo(w http.ResponseWriter, r *http.Request) {
//Influx init
u,err := url.Parse("http://localhost:8086")
checkError(err)
influx_c := client.NewClient(client.Config{
URL: u,
Username: username,
Password: password,
})
bp,err := client.NewBatchPoints(client.BatchPointsConfig{
Database: MyDB,
Precision: "s",
})
tags := map[string]string{"my_sensor_id": my_sensor_id}
//end influx init
c, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Print("upgrade:", err)
return
}
defer c.Close()
for {
mt, message, err := c.ReadMessage()
if err != nil {
log.Println("read:", err)
break
}
log.Printf("recv: %s", message)
/*
write to influx here
*/
fields := map[string]interface{}{
"random_int": message,
"other_stuff": 69696,
}
pt,err := client.NewPoint("test_collection", tags, fields, time.Now())
checkError(err)
bp.AddPoint(pt)
influx_c.Write(bp)
err = c.WriteMessage(mt, message)
if err != nil {
log.Println("write:", err)
break
}
}
}
func home(w http.ResponseWriter, r *http.Request) {
homeTemplate.Execute(w, "ws://"+r.Host+"/echo", )
}
func main() {
flag.Parse()
log.SetFlags(0)
http.HandleFunc("/echo", echo)
http.HandleFunc("/", home)
log.Fatal(http.ListenAndServe(*addr, nil))
}
答案1
得分: 2
你的本地机器上有一个早于此提交的 github.com/influxdb/influxdb/client/v2 版本(https://github.com/influxdata/influxdb/commit/b0e9f7e844225b05abf9f4455229490f99348ac4)。你的云服务器正在获取一个更新的版本。
要解决这个问题,在本地机器上运行以下命令:
go get -u github.com/influxdb/influxdb/client/v2
以获取包的最新版本。更新应用程序代码以使用新的函数和类型名称:
influx_c := client.NewHTTPClient(client.HTTPConfig{
URL: u,
Username: username,
Password: password,
})
英文:
You local machine has a version of github.com/influxdb/influxdb/client/v2 before this commit. Your cloud server is fetching a more recent version of the package.
To fix the issue, run
go get -u github.com/influxdb/influxdb/client/v2
on your local machine to get the latest version of the package. Update the application code to use the new function and type names:
influx_c := client.NewHTTPClient(client.HTTPConfig{
URL: u,
Username: username,
Password: password,
})
答案2
得分: 0
你好!以下是翻译好的内容:
成功了,谢谢!还请注意以下代码:
influx_c,err := client.NewHTTPClient(client.HTTPConfig{
Addr: "http://localhost:8086",
Username: username,
Password: password,
})
他们将URL字段更改为Addr,它是一个字符串字面量,而不是net/url对象。
英文:
Nailed it, thanks! Also note from following code:
influx_c,err := client.NewHTTPClient(client.HTTPConfig{
Addr: "http://localhost:8086",
Username: username,
Password: password,
})
They changed URL field to Addr, with is a string literal instead of a net/url object
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