AzureBackend: Add Azure MediaBackend

Add @azure/storage-blob dependency
This is the relevant part of the official azure sdk.

Signed-off-by: Philip Molares <philip.molares@udo.edu>

package.json

@@ -24,6 +24,7 @@
     "test:e2e:cov": "jest --config jest-e2e.json --coverage"
   },
   "dependencies": {
+    "@azure/storage-blob": "^12.4.1",
     "@nestjs/common": "7.6.13",
     "@nestjs/config": "0.6.3",
     "@nestjs/core": "7.6.13",

src/media/backends/azure-backend.ts

@@ -0,0 +1,85 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import mediaConfiguration, { MediaConfig } from '../../config/media.config';
+import { ConsoleLoggerService } from '../../logger/console-logger.service';
+import { MediaBackend } from '../media-backend.interface';
+import { BackendData } from '../media-upload.entity';
+import {
+  BlobServiceClient,
+  BlockBlobClient,
+  ContainerClient,
+} from '@azure/storage-blob';
+import { BackendType } from './backend-type.enum';
+import { MediaBackendError } from '../../errors/errors';
+
+@Injectable()
+export class AzureBackend implements MediaBackend {
+  private config: MediaConfig['backend']['azure'];
+  private client: ContainerClient;
+
+  constructor(
+    private readonly logger: ConsoleLoggerService,
+    @Inject(mediaConfiguration.KEY)
+    private mediaConfig: MediaConfig,
+  ) {
+    this.logger.setContext(AzureBackend.name);
+    this.config = mediaConfig.backend.azure;
+    if (mediaConfig.backend.use === BackendType.AZURE) {
+      // only create the client if the backend is configured to azure
+      const blobServiceClient = BlobServiceClient.fromConnectionString(
+        this.config.connectionString,
+      );
+      this.client = blobServiceClient.getContainerClient(this.config.container);
+    }
+  }
+
+  async saveFile(
+    buffer: Buffer,
+    fileName: string,
+  ): Promise<[string, BackendData]> {
+    const blockBlobClient: BlockBlobClient = this.client.getBlockBlobClient(
+      fileName,
+    );
+    try {
+      await blockBlobClient.upload(buffer, buffer.length);
+      const url = this.getUrl(fileName);
+      this.logger.log(`Uploaded ${url}`, 'saveFile');
+      return [url, null];
+    } catch (e) {
+      this.logger.error(
+        `error: ${(e as Error).message}`,
+        (e as Error).stack,
+        'saveFile',
+      );
+      throw new MediaBackendError(`Could not save '${fileName}' on Azure`);
+    }
+  }
+
+  async deleteFile(fileName: string, _: BackendData): Promise<void> {
+    const blockBlobClient: BlockBlobClient = this.client.getBlockBlobClient(
+      fileName,
+    );
+    try {
+      await blockBlobClient.delete();
+      const url = this.getUrl(fileName);
+      this.logger.log(`Deleted ${url}`, 'deleteFile');
+      return;
+    } catch (e) {
+      this.logger.error(
+        `error: ${(e as Error).message}`,
+        (e as Error).stack,
+        'deleteFile',
+      );
+      throw new MediaBackendError(`Could not delete '${fileName}' on Azure`);
+    }
+  }
+
+  private getUrl(fileName: string): string {
+    return `${this.client.url}/${fileName}`;
+  }
+}

src/media/media.module.ts

@@ -14,6 +14,7 @@ import { FilesystemBackend } from './backends/filesystem-backend';
 import { MediaUpload } from './media-upload.entity';
 import { MediaService } from './media.service';
 import { ImgurBackend } from './backends/imgur-backend';
+import { AzureBackend } from './backends/azure-backend';
 
 @Module({
   imports: [
@@ -23,7 +24,7 @@ import { ImgurBackend } from './backends/imgur-backend';
     LoggerModule,
     ConfigModule,
   ],
-  providers: [MediaService, FilesystemBackend, ImgurBackend],
+  providers: [MediaService, FilesystemBackend, AzureBackend, ImgurBackend],
   exports: [MediaService],
 })
 export class MediaModule {}

src/media/media.service.ts

@@ -19,6 +19,7 @@ import { FilesystemBackend } from './backends/filesystem-backend';
 import { MediaBackend } from './media-backend.interface';
 import { MediaUpload } from './media-upload.entity';
 import { MediaUploadUrlDto } from './media-upload-url.dto';
+import { AzureBackend } from './backends/azure-backend';
 import { ImgurBackend } from './backends/imgur-backend';
 
 @Injectable()
@@ -159,6 +160,8 @@ export class MediaService {
     switch (this.mediaConfig.backend.use) {
       case 'filesystem':
         return BackendType.FILESYSTEM;
+      case 'azure':
+        return BackendType.AZURE;
       case 'imgur':
         return BackendType.IMGUR;
     }
@@ -168,6 +171,8 @@ export class MediaService {
     switch (type) {
       case BackendType.FILESYSTEM:
         return this.moduleRef.get(FilesystemBackend);
+      case BackendType.AZURE:
+        return this.moduleRef.get(AzureBackend);
       case BackendType.IMGUR:
         return this.moduleRef.get(ImgurBackend);
     }

yarn.lock

@@ -55,6 +55,95 @@
     ora "5.3.0"
     rxjs "6.6.3"
 
+"@azure/abort-controller@^1.0.0":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@azure/abort-controller/-/abort-controller-1.0.2.tgz#822405c966b2aec16fb62c1b19d37eaccf231995"
+  integrity sha512-XUyTo+bcyxHEf+jlN2MXA7YU9nxVehaubngHV1MIZZaqYmZqykkoeAz/JMMEeR7t3TcyDwbFa3Zw8BZywmIx4g==
+  dependencies:
+    tslib "^2.0.0"
+
+"@azure/core-asynciterator-polyfill@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@azure/core-asynciterator-polyfill/-/core-asynciterator-polyfill-1.0.0.tgz#dcccebb88406e5c76e0e1d52e8cc4c43a68b3ee7"
+  integrity sha512-kmv8CGrPfN9SwMwrkiBK9VTQYxdFQEGe0BmQk+M8io56P9KNzpAxcWE/1fxJj7uouwN4kXF0BHW8DNlgx+wtCg==
+
+"@azure/core-auth@^1.1.3":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@azure/core-auth/-/core-auth-1.2.0.tgz#a5a181164e99f8446a3ccf9039345ddc9bb63bb9"
+  integrity sha512-KUl+Nwn/Sm6Lw5d3U90m1jZfNSL087SPcqHLxwn2T6PupNKmcgsEbDjHB25gDvHO4h7pBsTlrdJAY7dz+Qk8GA==
+  dependencies:
+    "@azure/abort-controller" "^1.0.0"
+    tslib "^2.0.0"
+
+"@azure/core-http@^1.2.0":
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/@azure/core-http/-/core-http-1.2.3.tgz#b1e459f6705df1f8d09bf6582292891c04bcace1"
+  integrity sha512-g5C1zUJO5dehP2Riv+vy9iCYoS1UwKnZsBVCzanScz9A83LbnXKpZDa9wie26G9dfXUhQoFZoFT8LYWhPKmwcg==
+  dependencies:
+    "@azure/abort-controller" "^1.0.0"
+    "@azure/core-auth" "^1.1.3"
+    "@azure/core-tracing" "1.0.0-preview.9"
+    "@azure/logger" "^1.0.0"
+    "@opentelemetry/api" "^0.10.2"
+    "@types/node-fetch" "^2.5.0"
+    "@types/tunnel" "^0.0.1"
+    form-data "^3.0.0"
+    node-fetch "^2.6.0"
+    process "^0.11.10"
+    tough-cookie "^4.0.0"
+    tslib "^2.0.0"
+    tunnel "^0.0.6"
+    uuid "^8.3.0"
+    xml2js "^0.4.19"
+
+"@azure/core-lro@^1.0.2":
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/@azure/core-lro/-/core-lro-1.0.3.tgz#1ddfb4ecdb81ce87b5f5d972ffe2acbbc46e524e"
+  integrity sha512-Py2crJ84qx1rXkzIwfKw5Ni4WJuzVU7KAF6i1yP3ce8fbynUeu8eEWS4JGtSQgU7xv02G55iPDROifmSDbxeHA==
+  dependencies:
+    "@azure/abort-controller" "^1.0.0"
+    "@azure/core-http" "^1.2.0"
+    events "^3.0.0"
+    tslib "^2.0.0"
+
+"@azure/core-paging@^1.1.1":
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/@azure/core-paging/-/core-paging-1.1.3.tgz#3587c9898a0530cacb64bab216d7318468aa5efc"
+  integrity sha512-his7Ah40ThEYORSpIAwuh6B8wkGwO/zG7gqVtmSE4WAJ46e36zUDXTKReUCLBDc6HmjjApQQxxcRFy5FruG79A==
+  dependencies:
+    "@azure/core-asynciterator-polyfill" "^1.0.0"
+
+"@azure/core-tracing@1.0.0-preview.9":
+  version "1.0.0-preview.9"
+  resolved "https://registry.yarnpkg.com/@azure/core-tracing/-/core-tracing-1.0.0-preview.9.tgz#84f3b85572013f9d9b85e1e5d89787aa180787eb"
+  integrity sha512-zczolCLJ5QG42AEPQ+Qg9SRYNUyB+yZ5dzof4YEc+dyWczO9G2sBqbAjLB7IqrsdHN2apkiB2oXeDKCsq48jug==
+  dependencies:
+    "@opencensus/web-types" "0.0.7"
+    "@opentelemetry/api" "^0.10.2"
+    tslib "^2.0.0"
+
+"@azure/logger@^1.0.0":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@azure/logger/-/logger-1.0.1.tgz#19b333203d1b2931353d8879e814b64a7274837a"
+  integrity sha512-QYQeaJ+A5x6aMNu8BG5qdsVBnYBop9UMwgUvGihSjf1PdZZXB+c/oMdM2ajKwzobLBh9e9QuMQkN9iL+IxLBLA==
+  dependencies:
+    tslib "^2.0.0"
+
+"@azure/storage-blob@^12.4.1":
+  version "12.4.1"
+  resolved "https://registry.yarnpkg.com/@azure/storage-blob/-/storage-blob-12.4.1.tgz#f2cc4a36a0df770b7b918ba89e72c02d72afbf2f"
+  integrity sha512-RH6ru8LbnCC+m1rlVLon6mYUXdHsTcyUXFCJAWRQQM7p0XOwVKPS+UiVk2tZXfvMWd3q/qT/meOrEbHEcp/c4g==
+  dependencies:
+    "@azure/abort-controller" "^1.0.0"
+    "@azure/core-http" "^1.2.0"
+    "@azure/core-lro" "^1.0.2"
+    "@azure/core-paging" "^1.1.1"
+    "@azure/core-tracing" "1.0.0-preview.9"
+    "@azure/logger" "^1.0.0"
+    "@opentelemetry/api" "^0.10.2"
+    events "^3.0.0"
+    tslib "^2.0.0"
+
 "@babel/code-frame@7.12.11":
   version "7.12.11"
   resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.12.11.tgz#f4ad435aa263db935b8f10f2c552d23fb716a63f"
@@ -734,6 +823,23 @@
     consola "^2.15.0"
     node-fetch "^2.6.1"
 
+"@opencensus/web-types@0.0.7":
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/@opencensus/web-types/-/web-types-0.0.7.tgz#4426de1fe5aa8f624db395d2152b902874f0570a"
+  integrity sha512-xB+w7ZDAu3YBzqH44rCmG9/RlrOmFuDPt/bpf17eJr8eZSrLt7nc7LnWdxM9Mmoj/YKMHpxRg28txu3TcpiL+g==
+
+"@opentelemetry/api@^0.10.2":
+  version "0.10.2"
+  resolved "https://registry.yarnpkg.com/@opentelemetry/api/-/api-0.10.2.tgz#9647b881f3e1654089ff7ea59d587b2d35060654"
+  integrity sha512-GtpMGd6vkzDMYcpu2t9LlhEgMy/SzBwRnz48EejlRArYqZzqSzAsKmegUK7zHgl+EOIaK9mKHhnRaQu3qw20cA==
+  dependencies:
+    "@opentelemetry/context-base" "^0.10.2"
+
+"@opentelemetry/context-base@^0.10.2":
+  version "0.10.2"
+  resolved "https://registry.yarnpkg.com/@opentelemetry/context-base/-/context-base-0.10.2.tgz#55bea904b2b91aa8a8675df9eaba5961bddb1def"
+  integrity sha512-hZNKjKOYsckoOEgBziGMnBcX0M7EtstnCmwz5jZUOUYwlZ+/xxX6z3jPu1XVO2Jivk0eLfuP9GP+vFD49CMetw==
+
 "@schematics/schematics@0.1102.0":
   version "0.1102.0"
   resolved "https://registry.yarnpkg.com/@schematics/schematics/-/schematics-0.1102.0.tgz#f47d8fb6d9029ffe646ab9680ac5b2833322df1e"
@@ -1033,7 +1139,7 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.2.tgz#93e25bf9ee75fe0fd80b594bc4feb0e862111b5a"
   integrity sha512-YATxVxgRqNH6nHEIsvg6k2Boc1JHI9ZbH5iWFFv/MTkchz3b1ieGDa5T0a9RznNdI0KhVbdbWSN+KWWrQZRxTw==
 
-"@types/node-fetch@^2.5.8":
+"@types/node-fetch@^2.5.0", "@types/node-fetch@^2.5.8":
   version "2.5.8"
   resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.5.8.tgz#e199c835d234c7eb0846f6618012e558544ee2fb"
   integrity sha512-fbjI6ja0N5ZA8TV53RUqzsKNkl9fv8Oj3T7zxW7FGv1GSH7gwJaNF8dzCjrqKaxKeUpTz4yT1DaJFq/omNpGfw==
@@ -1143,6 +1249,13 @@
   resolved "https://registry.yarnpkg.com/@types/tapable/-/tapable-1.0.6.tgz#a9ca4b70a18b270ccb2bc0aaafefd1d486b7ea74"
   integrity sha512-W+bw9ds02rAQaMvaLYxAbJ6cvguW/iJXNT6lTssS1ps6QdrMKttqEAMEG/b5CR8TZl3/L7/lH0ZV5nNR1LXikA==
 
+"@types/tunnel@^0.0.1":
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/@types/tunnel/-/tunnel-0.0.1.tgz#0d72774768b73df26f25df9184273a42da72b19c"
+  integrity sha512-AOqu6bQu5MSWwYvehMXLukFHnupHrpZ8nvgae5Ggie9UwzDR1CCwoXgSSWNZJuyOlCdfdsWMA5F2LlmvyoTv8A==
+  dependencies:
+    "@types/node" "*"
+
 "@types/uglify-js@*":
   version "3.12.0"
   resolved "https://registry.yarnpkg.com/@types/uglify-js/-/uglify-js-3.12.0.tgz#2bb061c269441620d46b946350c8f16d52ef37c5"
@@ -2944,7 +3057,7 @@ event-emitter@^0.3.5:
     d "1"
     es5-ext "~0.10.14"
 
-events@^3.2.0:
+events@^3.0.0, events@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/events/-/events-3.2.0.tgz#93b87c18f8efcd4202a461aec4dfc0556b639379"
   integrity sha512-/46HWwbfCX2xTawVfkKLGxMifJYQBWMwY1mjywRtb4c9x8l5NP3KoJtnIOiL1hfdRkIuYhETxQlo62IF8tcnlg==
@@ -5086,7 +5199,7 @@ node-emoji@1.10.0:
   dependencies:
     lodash.toarray "^4.4.0"
 
-node-fetch@^2.6.1:
+node-fetch@^2.6.0, node-fetch@^2.6.1:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
   integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
@@ -5711,6 +5824,11 @@ process-nextick-args@~2.0.0:
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
   integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
 
+process@^0.11.10:
+  version "0.11.10"
+  resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
+  integrity sha1-czIwDoQBYb2j5podHZGn1LwW8YI=
+
 progress@^2.0.0:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
@@ -5737,7 +5855,7 @@ prr@~1.0.1:
   resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
   integrity sha1-0/wRS6BplaRexok/SEzrHXj19HY=
 
-psl@^1.1.28:
+psl@^1.1.28, psl@^1.1.33:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/psl/-/psl-1.8.0.tgz#9326f8bcfb013adcc005fdff056acce020e51c24"
   integrity sha512-RIdOzyoavK+hA18OGGWDqUTsCLhtA7IcZ/6NCs4fFJaHBDab+pDDmDIByWFRQJq2Cd7r1OoQxBGKOaztq+hjIQ==
@@ -6910,6 +7028,15 @@ tough-cookie@^3.0.1:
     psl "^1.1.28"
     punycode "^2.1.1"
 
+tough-cookie@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-4.0.0.tgz#d822234eeca882f991f0f908824ad2622ddbece4"
+  integrity sha512-tHdtEpQCMrc1YLrMaqXXcj6AxhYi/xgit6mZu1+EDWUn+qhUf8wMQoFIy9NXuq23zAwtcB0t/MjACGR18pcRbg==
+  dependencies:
+    psl "^1.1.33"
+    punycode "^2.1.1"
+    universalify "^0.1.2"
+
 tr46@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/tr46/-/tr46-2.0.2.tgz#03273586def1595ae08fedb38d7733cee91d2479"
@@ -6981,7 +7108,7 @@ tsconfig-paths@3.9.0, tsconfig-paths@^3.4.0, tsconfig-paths@^3.9.0:
     minimist "^1.2.0"
     strip-bom "^3.0.0"
 
-tslib@2.1.0:
+tslib@2.1.0, tslib@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.1.0.tgz#da60860f1c2ecaa5703ab7d39bc05b6bf988b97a"
   integrity sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==
@@ -7005,6 +7132,11 @@ tunnel-agent@^0.6.0:
   dependencies:
     safe-buffer "^5.0.1"
 
+tunnel@^0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/tunnel/-/tunnel-0.0.6.tgz#72f1314b34a5b192db012324df2cc587ca47f92c"
+  integrity sha512-1h/Lnq9yajKY2PEbBadPXj3VxsDDu844OnaAo52UVmIzIvwwtBPIuNvkjuzBlTWpfJyUbG3ez0KSBibQkj4ojg==
+
 tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
@@ -7123,6 +7255,11 @@ union-value@^1.0.0:
     is-extendable "^0.1.1"
     set-value "^2.0.1"
 
+universalify@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
+  integrity sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==
+
 universalify@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/universalify/-/universalify-2.0.0.tgz#75a4984efedc4b08975c5aeb73f530d02df25717"
@@ -7415,7 +7552,7 @@ xml-name-validator@^3.0.0:
   resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"
   integrity sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==
 
-xml2js@^0.4.23:
+xml2js@^0.4.19, xml2js@^0.4.23:
   version "0.4.23"
   resolved "https://registry.yarnpkg.com/xml2js/-/xml2js-0.4.23.tgz#a0c69516752421eb2ac758ee4d4ccf58843eac66"
   integrity sha512-ySPiMjM0+pLDftHgXY4By0uswI3SPKLDw/i3UXbnO8M/p28zqexCUoPmQFrYD+/1BzhGJSs2i1ERWKJAtiLrug==