github.com/glide-im/glide@v1.6.0/internal/server_state/server_state.go (about)

     1  package server_state
     2  
     3  import (
     4  	"fmt"
     5  	"github.com/glide-im/glide/internal/im_server"
     6  	"github.com/glide-im/glide/pkg/logger"
     7  	"io"
     8  	"net/http"
     9  )
    10  
    11  type httpHandler struct {
    12  	g *im_server.GatewayServer
    13  }
    14  
    15  func (h *httpHandler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
    16  	defer func() {
    17  		if err := recover(); err != nil {
    18  			writer.WriteHeader(http.StatusInternalServerError)
    19  			bytes := []byte(fmt.Sprintf("%v", err))
    20  			logger.E("%v", err)
    21  			_, _ = writer.Write(bytes)
    22  		}
    23  	}()
    24  	if request.URL.Path == "/state" {
    25  		writer.WriteHeader(200)
    26  		state := h.g.GetState()
    27  		metricsLog := printBeautifulState(&state)
    28  		//bytes, err2 := json.Marshal(&state)
    29  		//if err2 != nil {
    30  		//	panic(err2)
    31  		//}
    32  		_, err := writer.Write([]byte(metricsLog))
    33  		if err != nil {
    34  			panic(err)
    35  		}
    36  	} else {
    37  		writer.WriteHeader(http.StatusNotFound)
    38  	}
    39  }
    40  
    41  func StartSrv(port int, server *im_server.GatewayServer) {
    42  	a := fmt.Sprintf("0.0.0.0:%d", port)
    43  	err := http.ListenAndServe(a, &httpHandler{g: server})
    44  	if err != nil {
    45  		return
    46  	}
    47  }
    48  
    49  func ShowServerState(addr string) {
    50  	url := fmt.Sprintf("http://%s/state", addr)
    51  	fmt.Printf("get state from %s\n", url)
    52  	resp, err := http.Get(url)
    53  	if err != nil {
    54  		panic(err)
    55  	}
    56  	defer resp.Body.Close()
    57  	if resp.StatusCode != 200 {
    58  		fmt.Printf("get state from %s failed, status code %d\n", url, resp.StatusCode)
    59  		return
    60  	}
    61  
    62  	bytes, err := io.ReadAll(resp.Body)
    63  	if err != nil {
    64  		panic(err)
    65  	}
    66  
    67  	if len(bytes) <= 0 {
    68  		fmt.Println("get state failed, empty body")
    69  		return
    70  	}
    71  	fmt.Println(string(bytes))
    72  }
    73  
    74  func printBeautifulState(state *im_server.GatewayMetrics) string {
    75  	return fmt.Sprintf("\nServerId:\t%s", state.ServerId) +
    76  		fmt.Sprintf("\nAddr:\t\t%s", state.Addr) +
    77  		fmt.Sprintf("\nPort:\t\t%d", state.Port) +
    78  		fmt.Sprintf("\nStartAt:\t%s", state.StartAt.Format("2006-01-02 15:04:05")) +
    79  		fmt.Sprintf("\nRunningHours:\t\t%.2f", state.RunningHours) +
    80  		fmt.Sprintf("\n== metric ==") +
    81  		fmt.Sprintf("\nOnlineClients:\t\t%d", state.Conn.ConnectionCounter.Count()) +
    82  		fmt.Sprintf("\nOnlineTempClients:\t%d", state.Conn.OnlineTempCounter.Count()) +
    83  		fmt.Sprintf("\nTempConnAliveMaxSec:\t%d", state.Conn.AliveTempH.Max()) +
    84  		fmt.Sprintf("\nTempConnAliveMeanSec:\t%f", state.Conn.AliveTempH.Mean()) +
    85  		fmt.Sprintf("\nOnlineTempClients:\t%d", state.Conn.OnlineTempCounter.Count()) +
    86  		fmt.Sprintf("\nLoggedConnAliveMaxSec:\t%d", state.Conn.AliveLoggedH.Max()) +
    87  		fmt.Sprintf("\nLoggedConnAliveMeanSec:\t%f", state.Conn.AliveLoggedH.Mean()) +
    88  		fmt.Sprintf("\nOutMessages:\t\t%d", state.Message.OutCounter.Count()) +
    89  		fmt.Sprintf("\nOutMessageFails:\t%d", state.Message.FailsCounter.Count()) +
    90  		fmt.Sprintf("\nInMessages:\t\t%d", state.Message.InCounter.Count()) +
    91  		fmt.Sprintf("\n")
    92  }