Subnet cluster registration (#1338)

- Removed old registration flow
- Add support for new online and offline cluster registration flow
- Support login accounts with mfa enabled
- Registration screens

Signed-off-by: Lenin Alevski <alevsk.8772@gmail.com>

pkg/subnet/utils.go

@@ -0,0 +1,165 @@
+// This file is part of MinIO Kubernetes Cloud
+// 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 subnet
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/minio/console/cluster"
+	"github.com/minio/madmin-go"
+	mc "github.com/minio/mc/cmd"
+	"github.com/minio/pkg/env"
+)
+
+const (
+	subnetRespBodyLimit = 1 << 20 // 1 MiB
+)
+
+func subnetBaseURL() string {
+	return env.Get(ConsoleSubnetURL, "https://subnet.min.io")
+}
+
+func subnetRegisterURL() string {
+	return subnetBaseURL() + "/api/cluster/register"
+}
+
+func subnetLoginURL() string {
+	return subnetBaseURL() + "/api/auth/login"
+}
+
+func subnetOrgsURL() string {
+	return subnetBaseURL() + "/api/auth/organizations"
+}
+
+func subnetMFAURL() string {
+	return subnetBaseURL() + "/api/auth/mfa-login"
+}
+
+func GenerateRegToken(clusterRegInfo mc.ClusterRegistrationInfo) (string, error) {
+	token, e := json.Marshal(clusterRegInfo)
+	if e != nil {
+		return "", e
+	}
+
+	return base64.StdEncoding.EncodeToString(token), nil
+}
+
+func subnetAuthHeaders(authToken string) map[string]string {
+	return map[string]string{"Authorization": "Bearer " + authToken}
+}
+
+func httpDo(client cluster.HTTPClientI, req *http.Request) (*http.Response, error) {
+	//if globalSubnetProxyURL != nil {
+	//	client.Transport.(*http.Transport).Proxy = http.ProxyURL(globalSubnetProxyURL)
+	//}
+	return client.Do(req)
+}
+
+func subnetReqDo(client cluster.HTTPClientI, r *http.Request, headers map[string]string) (string, error) {
+	for k, v := range headers {
+		r.Header.Add(k, v)
+	}
+
+	ct := r.Header.Get("Content-Type")
+	if len(ct) == 0 {
+		r.Header.Add("Content-Type", "application/json")
+	}
+
+	resp, e := httpDo(client, r)
+	if e != nil {
+		return "", e
+	}
+
+	defer resp.Body.Close()
+	respBytes, e := ioutil.ReadAll(io.LimitReader(resp.Body, subnetRespBodyLimit))
+	if e != nil {
+		return "", e
+	}
+	respStr := string(respBytes)
+
+	if resp.StatusCode == http.StatusOK {
+		return respStr, nil
+	}
+	return respStr, fmt.Errorf("Request failed with code %d and error: %s", resp.StatusCode, respStr)
+}
+
+func subnetGetReq(client cluster.HTTPClientI, reqURL string, headers map[string]string) (string, error) {
+	r, e := http.NewRequest(http.MethodGet, reqURL, nil)
+	if e != nil {
+		return "", e
+	}
+	return subnetReqDo(client, r, headers)
+}
+
+func subnetPostReq(client cluster.HTTPClientI, reqURL string, payload interface{}, headers map[string]string) (string, error) {
+	body, e := json.Marshal(payload)
+	if e != nil {
+		return "", e
+	}
+	r, e := http.NewRequest(http.MethodPost, reqURL, bytes.NewReader(body))
+	if e != nil {
+		return "", e
+	}
+	return subnetReqDo(client, r, headers)
+}
+
+func GetClusterRegInfo(admInfo madmin.InfoMessage) mc.ClusterRegistrationInfo {
+	noOfPools := 1
+	noOfDrives := 0
+	for _, srvr := range admInfo.Servers {
+		if srvr.PoolNumber > noOfPools {
+			noOfPools = srvr.PoolNumber
+		}
+		noOfDrives += len(srvr.Disks)
+	}
+
+	totalSpace, usedSpace := getDriveSpaceInfo(admInfo)
+
+	return mc.ClusterRegistrationInfo{
+		DeploymentID: admInfo.DeploymentID,
+		ClusterName:  admInfo.DeploymentID,
+		UsedCapacity: admInfo.Usage.Size,
+		Info: mc.ClusterInfo{
+			MinioVersion:    admInfo.Servers[0].Version,
+			NoOfServerPools: noOfPools,
+			NoOfServers:     len(admInfo.Servers),
+			NoOfDrives:      noOfDrives,
+			TotalDriveSpace: totalSpace,
+			UsedDriveSpace:  usedSpace,
+			NoOfBuckets:     admInfo.Buckets.Count,
+			NoOfObjects:     admInfo.Objects.Count,
+		},
+	}
+}
+
+func getDriveSpaceInfo(admInfo madmin.InfoMessage) (uint64, uint64) {
+	total := uint64(0)
+	used := uint64(0)
+	for _, srvr := range admInfo.Servers {
+		for _, d := range srvr.Disks {
+			total += d.TotalSpace
+			used += d.UsedSpace
+		}
+	}
+	return total, used
+}