Added speedtest page & updated diagnostic page (#1099)

Signed-off-by: Benjamin Perez <benjamin@bexsoft.net>

Co-authored-by: Benjamin Perez <benjamin@bexsoft.net>
Co-authored-by: Daniel Valdivia <18384552+dvaldivia@users.noreply.github.com>

restapi/admin_speedtest.go

@@ -0,0 +1,119 @@
+// This file is part of MinIO Console Server
+// Copyright (c) 2021 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package restapi
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/dustin/go-humanize"
+	"github.com/gorilla/websocket"
+	"github.com/minio/madmin-go"
+)
+
+// getSpeedtesthOptionsFromReq gets duration, size & concurrent requests from a websocket
+// path come as : `/speedtest?duration=2h&size=12MiB&concurrent=10`
+func getSpeedtestOptionsFromReq(req *http.Request) (*madmin.SpeedtestOpts, error) {
+	optionsSet := madmin.SpeedtestOpts{}
+
+	queryPairs := req.URL.Query()
+
+	paramDuration := queryPairs.Get("duration")
+
+	if paramDuration == "" {
+		paramDuration = "10s"
+	}
+
+	duration, err := time.ParseDuration(paramDuration)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse duration: %s", paramDuration)
+	}
+
+	if duration <= 0 {
+		return nil, fmt.Errorf("duration cannot be 0 or negative")
+	}
+
+	optionsSet.Duration = duration
+
+	paramSize := queryPairs.Get("size")
+
+	if paramSize == "" {
+		paramSize = "64MiB"
+	}
+
+	size, err := humanize.ParseBytes(paramSize)
+
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse object size")
+	}
+
+	if size < 0 {
+		return nil, fmt.Errorf("size is expected to be atleast 0 bytes")
+	}
+
+	optionsSet.Size = int(size)
+
+	paramConcurrent := queryPairs.Get("concurrent")
+
+	if paramConcurrent == "" {
+		paramConcurrent = "32"
+	}
+
+	concurrent, err := strconv.Atoi(paramConcurrent)
+
+	if err != nil {
+		return nil, fmt.Errorf("invalid concurrent value: %s", paramConcurrent)
+	}
+
+	if concurrent <= 0 {
+		return nil, fmt.Errorf("concurrency cannot be '0' or negative")
+	}
+
+	optionsSet.Concurrency = concurrent
+
+	return &optionsSet, nil
+}
+
+func startSpeedtest(ctx context.Context, conn WSConn, client MinioAdmin, speedtestOpts *madmin.SpeedtestOpts) error {
+	speedtestRes, err := client.speedtest(ctx, *speedtestOpts)
+
+	if err != nil {
+		LogError("error initializing speedtest: %v", err)
+		return err
+	}
+
+	for result := range speedtestRes {
+		// Serializing message
+		bytes, err := json.Marshal(result)
+		if err != nil {
+			LogError("error serializing json: %v", err)
+			return err
+		}
+		// Send Message through websocket connection
+		err = conn.writeMessage(websocket.TextMessage, bytes)
+		if err != nil {
+			LogError("error writing speedtest response: %v", err)
+			return err
+		}
+	}
+
+	return nil
+}