[v3.2] Add grafana dashboard importing API (#11)

* Add API to import grafana templates to kubesphere dashboard
* Merge and fix the latest codes from kubesphere #2501

Signed-off-by: zhu733756 <talonzhu@yunify.com>

vendor/github.com/grafana-tools/sdk/rest-user.go

@@ -0,0 +1,164 @@
+package sdk
+
+/*
+   Copyright 2016 Alexander I.Grafov <grafov@gmail.com>
+   Copyright 2016-2019 The Grafana SDK authors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+	   http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+   ॐ तारे तुत्तारे तुरे स्व
+*/
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+)
+
+// GetActualUser gets an actual user.
+// Reflects GET /api/user API call.
+func (r *Client) GetActualUser(ctx context.Context) (User, error) {
+	var (
+		raw  []byte
+		user User
+		code int
+		err  error
+	)
+	if raw, code, err = r.get(ctx, "api/user", nil); err != nil {
+		return user, err
+	}
+	if code != 200 {
+		return user, fmt.Errorf("HTTP error %d: returns %s", code, raw)
+	}
+	dec := json.NewDecoder(bytes.NewReader(raw))
+	dec.UseNumber()
+	if err := dec.Decode(&user); err != nil {
+		return user, fmt.Errorf("unmarshal user: %s\n%s", err, raw)
+	}
+	return user, err
+}
+
+// GetUser gets an user by ID.
+// Reflects GET /api/users/:id API call.
+func (r *Client) GetUser(ctx context.Context, id uint) (User, error) {
+	var (
+		raw  []byte
+		user User
+		code int
+		err  error
+	)
+	if raw, code, err = r.get(ctx, fmt.Sprintf("api/users/%d", id), nil); err != nil {
+		return user, err
+	}
+	if code != 200 {
+		return user, fmt.Errorf("HTTP error %d: returns %s", code, raw)
+	}
+	dec := json.NewDecoder(bytes.NewReader(raw))
+	dec.UseNumber()
+	if err := dec.Decode(&user); err != nil {
+		return user, fmt.Errorf("unmarshal user: %s\n%s", err, raw)
+	}
+	return user, err
+}
+
+// GetAllUsers gets all users.
+// Reflects GET /api/users API call.
+func (r *Client) GetAllUsers(ctx context.Context) ([]User, error) {
+	var (
+		raw   []byte
+		users []User
+		code  int
+		err   error
+	)
+
+	params := url.Values{}
+	params.Set("perpage", "99999")
+	if raw, code, err = r.get(ctx, "api/users", params); err != nil {
+		return users, err
+	}
+	if code != 200 {
+		return users, fmt.Errorf("HTTP error %d: returns %s", code, raw)
+	}
+	dec := json.NewDecoder(bytes.NewReader(raw))
+	dec.UseNumber()
+	if err := dec.Decode(&users); err != nil {
+		return users, fmt.Errorf("unmarshal users: %s\n%s", err, raw)
+	}
+	return users, err
+}
+
+// SearchUsersWithPaging search users with paging.
+// query optional.  query value is contained in one of the name, login or email fields. Query values with spaces need to be url encoded e.g. query=Jane%20Doe
+// perpage optional. default 1000
+// page optional. default 1
+// http://docs.grafana.org/http_api/user/#search-users
+// http://docs.grafana.org/http_api/user/#search-users-with-paging
+//
+// Reflects GET /api/users/search API call.
+func (r *Client) SearchUsersWithPaging(ctx context.Context, query *string, perpage, page *int) (PageUsers, error) {
+	var (
+		raw       []byte
+		pageUsers PageUsers
+		code      int
+		err       error
+	)
+
+	var params url.Values = nil
+	if perpage != nil && page != nil {
+		if params == nil {
+			params = url.Values{}
+		}
+		params["perpage"] = []string{fmt.Sprint(*perpage)}
+		params["page"] = []string{fmt.Sprint(*page)}
+	}
+
+	if query != nil {
+		if params == nil {
+			params = url.Values{}
+		}
+		params["query"] = []string{*query}
+	}
+
+	if raw, code, err = r.get(ctx, "api/users/search", params); err != nil {
+		return pageUsers, err
+	}
+	if code != 200 {
+		return pageUsers, fmt.Errorf("HTTP error %d: returns %s", code, raw)
+	}
+	dec := json.NewDecoder(bytes.NewReader(raw))
+	dec.UseNumber()
+	if err := dec.Decode(&pageUsers); err != nil {
+		return pageUsers, fmt.Errorf("unmarshal users: %s\n%s", err, raw)
+	}
+	return pageUsers, err
+}
+
+// SwitchActualUserContext switches current user context to the given organization.
+// Reflects POST /api/user/using/:organizationId API call.
+func (r *Client) SwitchActualUserContext(ctx context.Context, oid uint) (StatusMessage, error) {
+	var (
+		raw  []byte
+		resp StatusMessage
+		err  error
+	)
+
+	if raw, _, err = r.post(ctx, fmt.Sprintf("/api/user/using/%d", oid), nil, raw); err != nil {
+		return StatusMessage{}, err
+	}
+	if err = json.Unmarshal(raw, &resp); err != nil {
+		return StatusMessage{}, err
+	}
+	return resp, nil
+}