Initial commit

frontend/lgproxy.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+    "net/http"
+    "net/url"
+    "io/ioutil"
+    "strconv"
+)
+
+type channelData struct {
+    id int
+    data string
+}
+
+func batchRequest(servers []string, endpoint string, command string) []string {
+    var ch chan channelData = make(chan channelData)
+    var response_array []string = make([]string, len(servers))
+
+    for i, server := range servers {
+        var isValidServer bool = false
+        for _, validServer := range settingServers {
+            if validServer == server {
+                isValidServer = true
+                break
+            }
+        }
+        if !isValidServer {
+            go func (i int) {
+                ch <- channelData{i, "request failed: invalid server\n"}
+            } (i)
+        } else {
+            url := "http://" + server + "." + settingServersDomain + ":" + strconv.Itoa(settingServersPort) + "/" + url.PathEscape(endpoint) + "?q=" + url.QueryEscape(command)
+            go func (url string, i int){
+                response, err := http.Get(url)
+                if err != nil {
+                    ch <- channelData{i, "request failed: " + err.Error() + "\n"}
+                    return
+                }
+                text, _ := ioutil.ReadAll(response.Body)
+                ch <- channelData{i, string(text)}
+            } (url, i)
+        }
+    }
+
+    for range servers {
+        var output channelData = <-ch
+        response_array[output.id] = output.data
+    }
+
+    return response_array
+}