OpenNJet WASM 模块支持 · Pull Request !11 · OpenNJet/OpenNJet

# 配置示例

```
server {
    listen       8080;
    location / {
       #开启 wasm 能力
       wasm_plugin;
       # wasm 函数名称
       wasm_func_name wasm_hello;
       # wasm 路径
       wasm_plugin_path /root/wasmedgedemo/wasm_hello/target/wasm32-wasi/release/wasm_hello.wasm;
    }
}
```

# wasm 插件程序
编译及使用参考 https://github.com/qianfeiqianlan/rust-wasm-demo

# 实现思路
1. 在 njet 启动时创建 wasm 运行时
2. 在 http 请求过来的时候组合相关请求参数
3. 使用组合好的参数调用 wasm 运行时中处理方法
4. 集成了 wasmedge 在 njet lib 中
5. 用户配置时可灵活指定 wasm 文件路径及处理方法名称

# 性能测试
使用 ab 测试在相同机器上 hello world 请求和 njet 原生程序响应速度基本一致，无明显性能损失

ab -n 10000 -c 100 http://localhost:8080/

```
This is ApacheBench, Version 2.3 <$Revision: 1843412 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests

Server Software:        njet/3.0.1
Server Hostname:        localhost
Server Port:            8080

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      100
Time taken for tests:   0.438 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      1530000 bytes
HTML transferred:       120000 bytes
Requests per second:    22833.92 [#/sec] (mean)
Time per request:       4.379 [ms] (mean)
Time per request:       0.044 [ms] (mean, across all concurrent requests)
Transfer rate:          3411.71 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    1   0.3      1       3
Processing:     1    3   0.5      3      36
Waiting:        1    3   0.6      3      34
Total:          3    4   0.4      4      36

Percentage of the requests served within a certain time (ms)
  50%      4
  66%      4
  75%      4
  80%      4
  90%      4
  95%      4
  98%      5
  99%      5
 100%     36 (longest request)
```

Type	Assign personnel	Status
Reviewer	zhaoygf	In progress (0/1 )
Tester	zhaoygf	In progress (0/1 )

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