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Dir : ~/usr/share/grafana/public/app/features/storage/

Edit File: storage.ts

import { DataFrame, dataFrameFromJSON, DataFrameJSON, getDisplayProcessor } from '@grafana/data';
import { config, getBackendSrv } from '@grafana/runtime';
import { backendSrv } from 'app/core/services/backend_srv';

import { UploadResponse, StorageInfo, ItemOptions, WriteValueRequest, WriteValueResponse } from './types';

// Likely should be built into the search interface!
export interface GrafanaStorage {
  get: <T = any>(path: string) => Promise<T>;
  list: (path: string) => Promise<DataFrame | undefined>;
  upload: (folder: string, file: File, overwriteExistingFile: boolean) => Promise<UploadResponse>;
  createFolder: (path: string) => Promise<{ error?: string }>;
  delete: (path: { isFolder: boolean; path: string }) => Promise<{ error?: string }>;

/** Admin only */
  getConfig: () => Promise<StorageInfo[]>;

/** Called before save */
  getOptions: (path: string) => Promise<ItemOptions>;

/** Saves dashboards */
  write: (path: string, options: WriteValueRequest) => Promise<WriteValueResponse>;
}

class SimpleStorage implements GrafanaStorage {
  constructor() {}

async get<T = any>(path: string): Promise<T> {
    const storagePath = `api/storage/read/${path}`.replace('//', '/');
    return getBackendSrv().get<T>(storagePath);
  }

async list(path: string): Promise<DataFrame | undefined> {
    let url = 'api/storage/list/';
    if (path) {
      url += path + '/';
    }
    const rsp = await getBackendSrv().get<DataFrameJSON>(url);
    if (rsp?.data) {
      const f = dataFrameFromJSON(rsp);
      for (const field of f.fields) {
        field.display = getDisplayProcessor({ field, theme: config.theme2 });
      }
      return f;
    }
    return undefined;
  }

async createFolder(path: string): Promise<{ error?: string }> {
    const res = await getBackendSrv().post<{ success: boolean; message: string }>(
      '/api/storage/createFolder',
      JSON.stringify({ path })
    );

if (!res.success) {
      return {
        error: res.message ?? 'unknown error',
      };
    }

return {};
  }

async deleteFolder(req: { path: string; force: boolean }): Promise<{ error?: string }> {
    const res = await getBackendSrv().post<{ success: boolean; message: string }>(
      `/api/storage/deleteFolder`,
      JSON.stringify(req)
    );

if (!res.success) {
      return {
        error: res.message ?? 'unknown error',
      };
    }

return {};
  }

async deleteFile(req: { path: string }): Promise<{ error?: string }> {
    const res = await getBackendSrv().post<{ success: boolean; message: string }>(`/api/storage/delete/${req.path}`);

if (!res.success) {
      return {
        error: res.message ?? 'unknown error',
      };
    }

return {};
  }

async delete(req: { isFolder: boolean; path: string }): Promise<{ error?: string }> {
    return req.isFolder ? this.deleteFolder({ path: req.path, force: true }) : this.deleteFile({ path: req.path });
  }

async upload(folder: string, file: File, overwriteExistingFile: boolean): Promise<UploadResponse> {
    const formData = new FormData();
    formData.append('folder', folder);
    formData.append('file', file);
    formData.append('overwriteExistingFile', String(overwriteExistingFile));
    const res = await fetch('/api/storage/upload', {
      method: 'POST',
      body: formData,
    });

async write(path: string, options: WriteValueRequest): Promise<WriteValueResponse> {
    return backendSrv.post<WriteValueResponse>(`/api/storage/write/${path}`, options);
  }

async getConfig() {
    return getBackendSrv().get<StorageInfo[]>('/api/storage/config');
  }

async getOptions(path: string) {
    return getBackendSrv().get<ItemOptions>(`/api/storage/options/${path}`);
  }
}

export function filenameAlreadyExists(folderName: string, fileNames: string[]) {
  const lowerCase = folderName.toLowerCase();
  const trimmedLowerCase = lowerCase.trim();
  const existingTrimmedLowerCaseNames = fileNames.map((f) => f.trim().toLowerCase());

return existingTrimmedLowerCaseNames.includes(trimmedLowerCase);
}

let storage: GrafanaStorage | undefined;

export function getGrafanaStorage() {
  if (!storage) {
    storage = new SimpleStorage();
  }
  return storage;
}