3 2 Amazon Bedrock: Stability AI: Generate Image Amazon Bedrock: Stability AI: 画像生成 2025-07-04 (C) Questetra, Inc. (MIT License)

This item generates an image using Stability AI's model on Amazon Bedrock.

この工程は、Amazon Bedrock 上で動作する Stability AI の モデルを用いて、画像を生成します。

https://support.questetra.com/bpmn-icons/service-task-aws-bedrock-stability-ai-image-generate/ https://support.questetra.com/ja/bpmn-icons/service-task-aws-bedrock-stability-ai-image-generate/ C1: Access Key C1: アクセスキー C2: Secret Access Key C2: シークレットアクセスキー C3: Region Code C3: リージョンコード C4: Model C4: モデル Stable Diffusion 3.5 Large Stable Image Ultra v1.1 Stable Image Core v1.1 C5: Prompt C5: プロンプト C6: Negative Prompt C6: ネガティブプロンプト C7: Data item that stores / to save the seed C7: シードを保持している／保存するデータ項目 C8: Image Aspect ratio (1:1 if not selected) C8: 画像アスペクト比 (未設定の場合、1:1) 1:1 5:4 3:2 16:9 21:9 9:21 9:16 2:3 4:5 C9: Image Format (PNG if not selected) C9: 画像形式 (未設定の場合、PNG) PNG JPEG C10: Data item to add the generated file C10: 生成されたファイルを追加保存するデータ項目 C11: File name to save as C11: 保存する際のファイル名 iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAAXNSR0IArs4c6QAABE9JREFUWEfN l3tMlWUcxz/v4SCXA38gtyPTiXo2m8YdEp3cUzGxOdw0E5tRNqlsMDGlRRE5kFJjqUDLKEJsYuCN xD8qA5oMGeBhXpIdbiuRrORSkOKBt71vHuIcDnRU2un5893v8nl/z/f3e55HwMpLsDS/V1CQo6Pe MR6EKBECAG/A5b5/D9AhQBOI5weVg+VdDQ2DlsT+VwDvBZFqpXJkpyiwFbC3JChwRxAp0OsVOR1X v+uezGdSgLl+YVtB2CuAysLERmYiDICY2qatKZjIf0IAjX9EniiKSQ+T2NRHEIR83aWql83FMgug 8Q8vEUWenYrkhhiCwFHdpeqN4+BMP0zln1tSCaMKSHsuIORP5Z+bxhIRk8ZqYhRAUrvCdkT3sIKz FFoS5sg9hcbQHaMAGt/wD0SBZEsDPYqdIJKra65OkWLIANKQcdCrfjPt85zMXcTGRGCjtGFo6B6f lRwnfMkibv58i2073ubwwRw8Pdx4bUcGcbHRrIlbQfnpc2xcvwZnJxV37w6Rd7iYwuJSU947fyoH XKVhJQNo/MISRIRiU6uQQF96evvRtXXw8YE9eKk9adG147NwPum79/Hum9txUqnI2nuQVSuiUXu6 09f/OwqFgoQtycya6SWH/PGnrnEFExA36bQ1R+4DhH8iQqKp1aJgf57bsJaZXmpEUcTe3o6S0lO8 tHkDpScqeGp5FPrhYWrrGglbEkJ9YzNKpZLVK2PQtXVypvJrjpVXMDAwfioLUKjTVr8gA8zzC2/k 7/k+uubMnkVBbha9fX18efIsq2JjUHu48Xp6Nvuz07n1y69Ms53GjZvduLtNZ4bak4MfFVF2upLl 0WGsfXoli58I5JuqC6SkZZqTTFOrtjrQAHB7zMEiG0vO72Wmcb6mls+/KCd3z1s4ONjz4qs72ZWS xJLQICrOfUvXzW6eT1jHja5unkncxrKopVy+2iLrpCh/H38MDLA5KdUcQE+rtnq6AUA0Z7E7PZWV yyLR6/VcbNDi4e5Kbl4hPgvmy1tTeKSU1vZOMtJSqG/UytU58P47LF0cwjRbW2739PJhwaccP3nW bNO0aquFSQEepdUs8R0LMG4LUrdtoa5BS82Fi5bEMrKRxCkJVaqYnZ0dZacqydp3yDSO0RaME6HU AW9sf0Uuf+mJr2Q1P8haHx/HDLUHi4IDaL58jez9eabu/4hQ42e+DVUqRzJ2JbMseinDwyNcu66j SXuFKz+0UFNbP9pekl3Y4hCCA3zxffwx5s2ZTW9fP8fKzrDiyQhZB1Xf1xkBGLXhRIPI4KGZ603i pnVEhoXi6uKCjY3CbDGkyXdd1yYnlioWvzoWZ2cVRUfLJh9EE41ic1mkaRcaEoC/z0KcVI6yia69 k+strXLLWriMR7HkZNXDSAKw+nEsQVj1QjIquCm8jJrqwdzl9P93Kf0vKvHA13IDhFUfJgYIqz7N xorIao9TCyfbQ5v9BWbg5jDAzldXAAAAAElFTkSuQmCC { // 認証設定を作成し、指定 const keyAuth = httpClient.createAuthSettingToken('Access Key', key); configs.putObject('conf_AccessKey', keyAuth); const secretAuth = httpClient.createAuthSettingToken('Secret Access Key', secret); configs.putObject('conf_SecretKey', secretAuth); configs.put('conf_Region', region); configs.put('conf_Model', model); configs.put('conf_Prompt', prompt); configs.put('conf_Negative', negative); configs.put('conf_Aspect', aspect); configs.put('conf_Format', format); configs.put('conf_FileName', fileName); // シードを保持している / 保存するデータ項目を作成し、指定 const seedDef = engine.createDataDefinition('シード', 2, 'q_seed', 'STRING_TEXTFIELD'); configs.putObject('conf_Seed', seedDef); engine.setData(seedDef, seed); // 生成された画像を保存するデータ項目を作成し、指定 const fileDef = engine.createDataDefinition('生成された画像', 3, 'q_file', 'FILE'); configs.putObject('conf_File', fileDef); return {seedDef, fileDef}; }; /** * 異常系のテスト * @param errorMsg */ const assertError = (errorMsg) => { let failed = false; try { main(); } catch (e) { failed = true; expect(e.message).toEqual(errorMsg); } if (!failed) { fail('No error was thrown.'); } }; const MODEL_D3_5_LARGE = 'stability.sd3-5-large-v1:0'; const MODEL_ULTRA_1_1 = 'stability.stable-image-ultra-v1:1'; const MODEL_CORE_1_1 = 'stability.stable-image-core-v1:1'; /** * リージョンコードの形式が不正 - ハイフンを含まない */ test('Region Code is invalid - no hyphens', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'invalidregioncode'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_ULTRA_1_1, prompt, negative, '1:1','png', null, '生成された画像.png'); assertError('Region Code is invalid.'); }); /** * リージョンコードの形式が不正 - ハイフンの間の文字列が長すぎる */ test('Region Code is invalid - too many characters', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'eu-toomanycharacters-1'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_D3_5_LARGE, prompt, negative, '5:4','jpg', null, '生成された画像.png'); assertError('Region Code is invalid.'); }); /** * モデルの指定が不正 - 不正な文字を含む */ test('Model is invalid - contains an invalid character', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, 'stability.stable-テスト', prompt, negative, '3:2', null, null, '生成された画像.png'); assertError('Model is invalid. It contains an invalid character.'); }); /** * モデルの指定が不正 - stability で始まらない */ test('Model is invalid - does not start with the prefix', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, 'invalid-model-2.0:1', prompt, negative, '16:9', 'png', null, '生成された画像.png'); assertError('Model is invalid. It must start with "stability".'); }); /** * プロンプトが空 */ test('Prompt is blank', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_CORE_1_1, '', negative, '21:9', 'jpg', null, '生成された画像.png'); assertError('Prompt is blank.'); }); /** * ファイル名が空 */ test('File name is blank', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_ULTRA_1_1, prompt, negative, '9:21', null, null, ''); assertError('File name is blank.'); }); /** * ファイル名が200文字を超える */ test('File Name Length > 200', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; let name = ''; while (name.length <= 200) { name += 'a'; } prepareConfigs(key, secret, region, MODEL_ULTRA_1_1, prompt, negative, '1:1', null, null, name); assertError('File Name should be less than 200 characters'); }); /** * シードに数字でない文字を含む */ test('Seed is invalid - includes invalid character', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_ULTRA_1_1, prompt, negative, '9:16', 'png', '-1', '生成された画像.png'); assertError(`Seed must be an integer from 0 to ${MAX_SEED}.`); }); /** * シードが上限値を超える */ test('Seed is invalid - exceeds the limit', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_D3_5_LARGE, prompt, negative, '2:3','jpg', String(MAX_SEED + 1), '生成された画像.png'); assertError(`Seed must be an integer from 0 to ${MAX_SEED}.`); }); /** * API リクエストのテスト * @param {Object} request * @param request.url * @param request.method * @param request.contentType * @param request.body * @param {String} region * @param {String} model * @param {String} prompt * @param {String} negative * @param {Number} aspect * @param {Number} format * @param {Number} seedNum */ const assertRequest = ({ url, method, contentType, body },region, model, prompt, negative, aspect, format, seedNum) => { expect(url).toEqual(`https://bedrock-runtime.${region}.amazonaws.com/model/${model}/invoke`); expect(method).toEqual('POST'); expect(contentType).toEqual('application/json'); // Authorization ヘッダのテストは省略 const bodyObj = JSON.parse(body); expect(bodyObj.prompt).toEqual(prompt); if (negative !== undefined) { expect(bodyObj.negative_prompt).toEqual(negative); } if (aspect !== undefined) { expect(bodyObj.aspect_ratio).toEqual(aspect); } expect(bodyObj.output_format).toEqual(format); expect(bodyObj.seed).toEqual(seedNum); }; /** * API リクエストでエラー */ test('Fail in API request', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = 'flat color, flat shading, interlocked fingers'; prepareConfigs(key, secret, region, MODEL_CORE_1_1, prompt, negative, '4:5', 'png', null, '生成された画像.png'); httpClient.setRequestHandler((request) => { assertRequest(request, region, MODEL_CORE_1_1, prompt, negative, '4:5', 'png', undefined); return httpClient.createHttpResponse(400, 'application/json', '{}'); }); assertError('Failed to invoke model. status: 400'); }); /** * API のレスポンスボディを作成 * @param {String} seed * @param {String} image * @returns {String} response */ const createResponse = (seed, image) => { const responseObj = { seeds: [seed], images: [image], finish_reasons: ['null'] }; return JSON.stringify(responseObj); }; /** * 成功 - 必須項目のみ指定。シードはデータ項目の指定はあるが、値が空 */ test('Success - only required params', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = ''; const aspect = ''; const format = ''; const {seedDef, fileDef} = prepareConfigs(key, secret, region, MODEL_ULTRA_1_1, prompt, negative, aspect, format, null, '生成された画像.png'); const seedNum = 1234567890; httpClient.setRequestHandler((request) => { assertRequest(request, region, MODEL_ULTRA_1_1, prompt, undefined, undefined, 'png', undefined); return httpClient.createHttpResponse(200, 'application/json', createResponse(seedNum, base64.encodeToString('aaaaaaaa'))); }); expect(main()).toEqual(undefined); expect(engine.findData(seedDef)).toEqual(String(seedNum)); const files = engine.findData(fileDef); expect(files.size()).toEqual(1); expect(files.get(0).getName()).toEqual('生成された画像.png'); expect(files.get(0).getContentType()).toEqual('image/png'); }); /** * 成功 - 必須項目のみ指定。シードはデータ項目の指定なし * 生成された画像を保存するデータ項目に、他のファイルがすでに添付されている場合 */ test('Success - only required params, data item for seed is not selected', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body'; const negative = ''; const aspect = ''; const format = ''; const {seedDef, fileDef} = prepareConfigs(key, secret, region, MODEL_D3_5_LARGE, prompt, negative, aspect, format, null, '生成された画像.png'); // データ項目の指定をはずす configs.put('conf_Seed', ''); // 生成された画像を保存するデータ項目に、他のファイルをあらかじめ添付しておく engine.setData(fileDef, [engine.createQfile('既存のファイル.txt', 'text/plain', 'aaa')]); const seedNum = 1234567890; httpClient.setRequestHandler((request) => { assertRequest(request, region, MODEL_D3_5_LARGE, prompt, undefined, undefined, 'png', undefined); return httpClient.createHttpResponse(200, 'application/json', createResponse(seedNum, base64.encodeToString('123'))); }); expect(main()).toEqual(undefined); expect(engine.findData(seedDef)).toEqual(null); // データ項目の指定が外れているので const files = engine.findData(fileDef); expect(files.size()).toEqual(2); expect(files.get(0).getName()).toEqual('既存のファイル.txt'); expect(files.get(1).getName()).toEqual('生成された画像.png'); expect(files.get(1).getContentType()).toEqual('image/png'); }); /** * 成功 - ネガティブプロンプト、画像アスペクト比 画像形式、シードを指定 */ test('Success - with negative prompt, aspect, format and seed', () => { const key = 'key-12345'; const secret = 'secret-67890'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body,pink hair,blue eyes'; const negative = 'flat color, flat shading, interlocked fingers'; const aspect = '5:4'; const format = 'jpg'; const seedNum = MAX_SEED; const {seedDef, fileDef} = prepareConfigs(key, secret, region, MODEL_CORE_1_1, prompt, negative, aspect, format, String(seedNum), 'Image.jpg'); httpClient.setRequestHandler((request) => { assertRequest(request, region, MODEL_CORE_1_1, prompt, negative, aspect, format, seedNum); return httpClient.createHttpResponse(200, 'application/json', createResponse(seedNum, base64.encodeToString('bbb'))); }); expect(main()).toEqual(undefined); expect(engine.findData(seedDef)).toEqual(String(seedNum)); const files = engine.findData(fileDef); expect(files.size()).toEqual(1); expect(files.get(0).getName()).toEqual('Image.jpg'); expect(files.get(0).getContentType()).toEqual('image/jpg'); }); /** * 成功 - ネガティブプロンプト、画像アスペクト比 画像形式、シードを指定 * 画像アスペクト比 画像形式 はデフォルト値を指定 */ test('Success - aspect and format are set to default values', () => { const key = 'key-09876'; const secret = 'secret-54321'; const region = 'us-west-2'; const prompt = 'masterpiece,high quality,extremely detailed face,1 girl,full body,pink hair,blue eyes'; const negative = 'flat color, flat shading, interlocked fingers'; const aspect = '1:1'; const format = 'png'; const seedNum = 0; const {seedDef, fileDef} = prepareConfigs(key, secret, region, MODEL_ULTRA_1_1, prompt, negative, aspect, format, String(seedNum), 'Image2.png'); httpClient.setRequestHandler((request) => { assertRequest(request, region, MODEL_ULTRA_1_1, prompt, negative, aspect, format, seedNum); return httpClient.createHttpResponse(200, 'application/json', createResponse(seedNum, base64.encodeToString('ccc'))); }); expect(main()).toEqual(undefined); expect(engine.findData(seedDef)).toEqual(String(seedNum)); const files = engine.findData(fileDef); expect(files.size()).toEqual(1); expect(files.get(0).getName()).toEqual('Image2.png'); expect(files.get(0).getContentType()).toEqual('image/png'); }); ]]>