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由于gclient.Client内部封装扩展于标准库的http.Client对象，因此标准库http.Client有的特性，gclient.Client也是支持的。我们这里提到的例子是Transport使用。来看几个示例：
使用Unix Socket
客户端和服务端使用Unix Socket通信，使用Transport来实现。以下代码为真实项目代码摘选，无法独立运行，仅做参考。
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func (*Guardian) ConvertContainerPathToHostPath(
ctx context.Context, namespace, podName, containerName, containerPath string,
) (string, error) {
var (
client = g.Client()
url = "http://localhost/api/v1/pod/path"
req = webservice.HostPathInfoReq{
Namespace: namespace,
PodName: podName,
ContainerName: containerName,
ContainerPath: containerPath,
}
res *webservice.HostPathInfoRes
)
client.Transport = &http.Transport{
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
return net.Dial("unix", serviceSocketPath)
},
}
err := client.ContentJson().PostVarGetVar(ctx, url, req).Scan(&res)
if err != nil {
return "", gerror.Wrapf(
err,
`request guardian failed for url: %s, req: %s`,
url, gjson.MustEncodeString(req),
)
}
if res == nil {
return "", gerror.Newf(
`nil response from guardian request url: %s, req: %s`,
url, gjson.MustEncodeString(req),
)
}
return res.HostPath, nil
} |
设置客户端连接池大小参数
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func ExampleNew_MultiConn_Recommend() {
var (
ctx = gctx.New()
client = g.Client()
)
// controls the maximum idle(keep-alive) connections to keep per-host
client.Transport.(*http.Transport).MaxIdleConnsPerHost = 5
for i := 0; i < 5; i++ {
go func() {
if r, err := client.Get(ctx, "http://127.0.0.1:8999/var/json"); err != nil {
panic(err)
} else {
fmt.Println(r.ReadAllString())
r.Close()
}
}()
}
time.Sleep(time.Second * 1)
// Output:
//{"id":1,"name":"john"}
//{"id":1,"name":"john"}
//{"id":1,"name":"john"}
//{"id":1,"name":"john"}
//{"id":1,"name":"john"}
} |
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