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Polish the Golang demo with Gin web framework

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This commit is contained in:
LI Qing 2020-05-28 09:34:37 +00:00
parent c1911e6585
commit c27a94194f
3 changed files with 35 additions and 33 deletions
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17
demos/golang/README.md
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@ -1,20 +1,25 @@
# Use Golang with Occlum # Use Golang with Occlum
This project demonstrates how Occlum enables [Golang](https://golang.org) programs running in SGX enclaves. This project demonstrates how Occlum enables [Golang](https://golang.org) programs running in SGX enclaves, the demo program is a HTTP web server based on a widely used web framework([Gin](https://gin-gonic.com)) for Go.
Step 1: Build Golang web server program using the Occlum Golang toolchain(i.e., `occlum-go`) Step 1: Install Gin with `occlum-go`, it may take a few minutes
```
occlum-go get -u -v github.com/gin-gonic/gin
```
Step 2: Build the Golang web server using the Occlum Golang toolchain(i.e., `occlum-go`)
``` ```
occlum-go build -o web_server -buildmode=pie ./web_server.go occlum-go build -o web_server -buildmode=pie ./web_server.go
``` ```
Step 2: You can run the web server demo on Occlum via Step 3: You can run the web server demo on Occlum via
``` ```
./run_golang_on_occlum.sh ./run_golang_on_occlum.sh
``` ```
The HTTP web server should now start to listen on port 8090 and serve HTTP requests. The HTTP web server should now start to listen on port 8090 and serve HTTP requests.
Step 3: To check whether the HTTP server works, run Step 4: To check whether the HTTP server works, run
``` ```
curl http://127.0.0.1:8090/hello1 curl http://127.0.0.1:8090/ping
``` ```
in another terminal, and get the response "hello,1". in another terminal, and get the response `{"message":"pong"}`.

4
demos/golang/run_golang_on_occlum.sh
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@ -16,8 +16,8 @@ fi
rm -rf occlum_context && mkdir occlum_context rm -rf occlum_context && mkdir occlum_context
cd occlum_context cd occlum_context
occlum init occlum init
jq '.vm.user_space_size = "320MB"' Occlum.json > temp_Occlum.json jq '.vm.user_space_size = "380MB"' Occlum.json > temp_Occlum.json
jq '.process.default_mmap_size = "256MB"' temp_Occlum.json > Occlum.json jq '.process.default_mmap_size = "300MB"' temp_Occlum.json > Occlum.json
# 2. Copy program into Occlum Workspace and build # 2. Copy program into Occlum Workspace and build
cp ../web_server image/bin cp ../web_server image/bin

47
demos/golang/web_server.go
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package main package main
import "net/http" import (
import "log" "io"
import "flag" "os"
import "fmt"
type Controller struct {} "github.com/gin-gonic/gin"
func (c Controller)ServeHTTP(writer http.ResponseWriter, request *http.Request){ )
writer.Write([]byte("hello,1\n"));
} func main() {
// Disable console color, you don't need console color when writing the logs to file.
func hello(writer http.ResponseWriter, request *http.Request) { gin.DisableConsoleColor()
writer.Write([]byte("hello,2\n"));
} // Use a file for logging
f, _ := os.Create("/root/gin.log")
var port string gin.DefaultWriter = io.MultiWriter(f, os.Stdout)
func init() { r := gin.Default()
flag.StringVar(&port, "port", "8090", "port number, default value is 8090") r.GET("/ping", func(c *gin.Context) {
} c.JSON(200, gin.H{
"message": "pong",
func main(){ })
flag.Parse() })
fmt.Println("Web Server port is:", port) // Listen and serve on 0.0.0.0:8090
http.Handle("/hello1",&Controller{}) r.Run(":8090")
http.Handle("/hello2",http.HandlerFunc(hello))
log.Fatal(http.ListenAndServe(":" + port, nil))
} }