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トップAWS Lambdaに関する質問Node.js 16.xからNode.js 18.xにコード変更したら動作しない

編集履歴

質問編集履歴

26

コード修正

2024/04/26 08:47

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -152,4 +152,3 @@
152
152
  }
153
153
  }
154
154
  }
155
-
AWS LambdaNode.js

25

コード修正

2024/04/26 08:45

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -99,15 +99,15 @@
99
99
 
100
100
  // Decoderの初期化
101
101
  let chunks = [];
102
- let decoder = function (data, chunk) {}; // 空のデコーダー関数
102
+ let decoder = function (data, fragmentNumber) {}; // デコーダー関数の宣言
103
103
 
104
104
  decoderOn(); // decoderOn関数の呼び出し
105
105
 
106
106
  // デコーダー関数
107
- function decoder(data, fragmentNumber) {
107
+ decoder = function (data, fragmentNumber) {
108
108
  // ここでデコード処理を行う
109
109
  return data.Payload; // 今回はデータそのものを返す
110
- }
110
+ };
111
111
 
112
112
  function decoderOn() {
113
113
  // デコーダーのオン/オフの設定
@@ -153,21 +153,3 @@
153
153
  }
154
154
  }
155
155
 
156
-
157
- // Decoderの初期化
158
- let chunks = [];
159
- let decoder = function (data, fragmentNumber) {}; // デコーダー関数の宣言
160
-
161
- decoderOn(); // decoderOn関数の呼び出し
162
-
163
- // デコーダー関数
164
- decoder = function (data, fragmentNumber) {
165
- // ここでデコード処理を行う
166
- return data.Payload; // 今回はデータそのものを返す
167
- };
168
-
169
- function decoderOn() {
170
- // デコーダーのオン/オフの設定
171
- }
172
-
173
-
AWS LambdaNode.js

24

修正

2024/04/26 08:43

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -153,3 +153,21 @@
153
153
  }
154
154
  }
155
155
 
156
+
157
+ // Decoderの初期化
158
+ let chunks = [];
159
+ let decoder = function (data, fragmentNumber) {}; // デコーダー関数の宣言
160
+
161
+ decoderOn(); // decoderOn関数の呼び出し
162
+
163
+ // デコーダー関数
164
+ decoder = function (data, fragmentNumber) {
165
+ // ここでデコード処理を行う
166
+ return data.Payload; // 今回はデータそのものを返す
167
+ };
168
+
169
+ function decoderOn() {
170
+ // デコーダーのオン/オフの設定
171
+ }
172
+
173
+
AWS LambdaNode.js

23

コード修正

2024/04/26 08:39

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,4 +4,152 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
+ import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
+ import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
9
+ import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
7
10
 
11
+ // リージョンやバケット名の設定
12
+ const region = 'ap-northeast-1';
13
+ const putKey = 'voice-message/wav/';
14
+ const bucketName = 'testname-pjcode';
15
+
16
+ // Lambda関数のエントリーポイント
17
+ export const handler = async (event) => {
18
+ // S3クライアントを作成
19
+ const s3Client = new S3Client({ region: region });
20
+
21
+ // イベントの各レコードに対して処理を実行
22
+ for (let record of event.Records) {
23
+ // information/yyyymmdd_×××をgetKeyに格納
24
+ const getKey = record.s3.object.key;
25
+ // '/'までの文字数10がindexに格納
26
+ let index = getKey.lastIndexOf('/');
27
+ let fileName = 'noname';
28
+
29
+ if (index >= 0) {
30
+ // getKeyに対して、文字数11以降("/")の文字列を取得
31
+ fileName = getKey.substr(index + 1);
32
+ }
33
+
34
+ // S3から録音データに関する情報を取得
35
+ const s3GetCommand = new GetObjectCommand({
36
+ Bucket: bucketName,
37
+ Key: getKey
38
+ });
39
+
40
+ const s3GetRes = await s3Client.send(s3GetCommand);
41
+ const info = await s3GetRes.Body.transformToString();
42
+ const infoStr = JSON.parse(info);
43
+ const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
44
+ const fragmentNumber = infoStr.startFragmentNumber;
45
+ const streamARN = infoStr.streamARN;
46
+
47
+ // Kinesis Video Media Clientを作成して、録音データを取得
48
+ const kvmClient = new KinesisVideoMediaClient({ region : region });
49
+ const kvmInput = {
50
+ StreamName: streamName,
51
+ StreamARN: streamARN,
52
+ StartSelector: {
53
+ StartSelectorType: 'FRAGMENT_NUMBER',
54
+ AfterFragmentNumber: fragmentNumber,
55
+ },
56
+ };
57
+
58
+ const kvmCommand = new GetMediaCommand(kvmInput);
59
+ const data = await kvmClient.send(kvmCommand);
60
+
61
+ // デコードされたデータをWAV形式に変換
62
+ const wav = Converter.createWav(data.Payload, 8000);
63
+
64
+ // WAVファイルをS3に保存
65
+ let tagging = ''; // 付加情報をタグに追加する
66
+ tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
67
+ tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
68
+ tagging += "startTimestamp=" + infoStr.startTimestamp;
69
+
70
+ const wavInput = new PutObjectCommand({
71
+ Bucket: bucketName,
72
+ Key: putKey + createKeyName() + fileName + '.wav',
73
+ Body: Buffer.from(wav.buffer),
74
+ Tagging: tagging
75
+ });
76
+
77
+ const wavRes = await s3Client.send(wavInput);
78
+ }
79
+ };
80
+
81
+ // S3バケット保存時のオブジェクト名を生成
82
+ function createKeyName() {
83
+ const date = new Date();
84
+ const year = date.getFullYear();
85
+ const mon = (date.getMonth() + 1);
86
+ const day = date.getDate();
87
+ const hour = date.getHours();
88
+
89
+ const space = (n) => {
90
+ return ('0' + (n)).slice(-2);
91
+ };
92
+
93
+ let result = year + '/';
94
+ result += space(mon) + '/';
95
+ result += space(day) + '/';
96
+ result += space(hour) + '/';
97
+ return result;
98
+ }
99
+
100
+ // Decoderの初期化
101
+ let chunks = [];
102
+ let decoder = function (data, chunk) {}; // 空のデコーダー関数
103
+
104
+ decoderOn(); // decoderOn関数の呼び出し
105
+
106
+ // デコーダー関数
107
+ function decoder(data, fragmentNumber) {
108
+ // ここでデコード処理を行う
109
+ return data.Payload; // 今回はデータそのものを返す
110
+ }
111
+
112
+ function decoderOn() {
113
+ // デコーダーのオン/オフの設定
114
+ }
115
+
116
+ class Converter {
117
+ // WAVファイルの生成
118
+ static createWav(samples, sampleRate) {
119
+ const len = samples.length;
120
+ const view = new DataView(new ArrayBuffer(44 + len));
121
+ this._writeString(view, 0, 'RIFF');
122
+ view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
123
+ this._writeString(view, 8, 'WAVE');
124
+ this._writeString(view, 12, 'fmt ');
125
+ view.setUint32(16, 16, true);
126
+ view.setUint16(20, 1, true); // リニアPCM
127
+ view.setUint16(22, 1, true); // モノラル
128
+ view.setUint32(24, sampleRate, true);
129
+ view.setUint32(28, sampleRate * 2, true);
130
+ view.setUint16(32, 2, true);
131
+ view.setUint16(34, 16, true);
132
+ this._writeString(view, 36, 'data');
133
+ view.setUint32(40, len, true);
134
+
135
+ for (let i = 0; i < len; i++) {
136
+ view.setUint8(44 + i, samples[i]);
137
+ }
138
+
139
+ return view;
140
+ }
141
+
142
+ static _writeString(view, offset, string) {
143
+ if (offset + string.length > view.byteLength) {
144
+ throw new RangeError('Offset is outside the bounds of the DataView');
145
+ }
146
+ for (let i = 0; i < string.length; i++) {
147
+ if (offset + i < view.byteLength) {
148
+ view.setUint8(offset + i, string.charCodeAt(i));
149
+ } else {
150
+ throw new RangeError('Offset is outside the bounds of the DataView');
151
+ }
152
+ }
153
+ }
154
+ }
155
+
AWS LambdaNode.js

22

修正

2024/04/26 08:39

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,148 +4,4 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
- import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
- import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
9
- import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
10
7
 
11
- // リージョンやバケット名の設定
12
- const region = 'ap-northeast-1';
13
- const putKey = 'voice-message/wav/';
14
- const bucketName = 'testname-pjcode';
15
-
16
- // Lambda関数のエントリーポイント
17
- export const handler = async (event) => {
18
- // S3クライアントを作成
19
- const s3Client = new S3Client({ region: region });
20
-
21
- // イベントの各レコードに対して処理を実行
22
- for (let record of event.Records) {
23
- // information/yyyymmdd_×××をgetKeyに格納
24
- const getKey = record.s3.object.key;
25
- // '/'までの文字数10がindexに格納
26
- let index = getKey.lastIndexOf('/');
27
- let fileName = 'noname';
28
-
29
- if (index >= 0) {
30
- // getKeyに対して、文字数11以降("/")の文字列を取得
31
- fileName = getKey.substr(index + 1);
32
- }
33
-
34
- // S3から録音データに関する情報を取得
35
- const s3GetCommand = new GetObjectCommand({
36
- Bucket: bucketName,
37
- Key: getKey
38
- });
39
-
40
- const s3GetRes = await s3Client.send(s3GetCommand);
41
- const info = await s3GetRes.Body.transformToString();
42
- const infoStr = JSON.parse(info);
43
- const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
44
- const fragmentNumber = infoStr.startFragmentNumber;
45
- const streamARN = infoStr.streamARN;
46
-
47
- // Kinesis Video Media Clientを作成して、録音データを取得
48
- const kvmClient = new KinesisVideoMediaClient({ region : region });
49
- const kvmInput = {
50
- StreamName: streamName,
51
- StreamARN: streamARN,
52
- StartSelector: {
53
- StartSelectorType: 'FRAGMENT_NUMBER',
54
- AfterFragmentNumber: fragmentNumber,
55
- },
56
- };
57
-
58
- const kvmCommand = new GetMediaCommand(kvmInput);
59
- const data = await kvmClient.send(kvmCommand);
60
-
61
- // デコードされたデータをWAV形式に変換
62
- const wav = Converter.createWav(data.Payload, 8000);
63
-
64
- // WAVファイルをS3に保存
65
- let tagging = ''; // 付加情報をタグに追加する
66
- tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
67
- tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
68
- tagging += "startTimestamp=" + infoStr.startTimestamp;
69
-
70
- const wavInput = new PutObjectCommand({
71
- Bucket: bucketName,
72
- Key: putKey + createKeyName() + fileName + '.wav',
73
- Body: Buffer.from(wav.buffer),
74
- Tagging: tagging
75
- });
76
-
77
- const wavRes = await s3Client.send(wavInput);
78
- }
79
- };
80
-
81
- // S3バケット保存時のオブジェクト名を生成
82
- function createKeyName() {
83
- const date = new Date();
84
- const year = date.getFullYear();
85
- const mon = (date.getMonth() + 1);
86
- const day = date.getDate();
87
- const hour = date.getHours();
88
-
89
- const space = (n) => {
90
- return ('0' + (n)).slice(-2);
91
- };
92
-
93
- let result = year + '/';
94
- result += space(mon) + '/';
95
- result += space(day) + '/';
96
- result += space(hour) + '/';
97
- return result;
98
- }
99
-
100
- // Decoderの初期化
101
- let chunks = [];
102
- let decoder = function (data, chunk) {}; // 空のデコーダー関数
103
-
104
- decoderOn();
105
-
106
- // デコーダー関数
107
- let decoder = function (data, fragmentNumber) {
108
- // ここでデコード処理を行う
109
- return data.Payload; // 今回はデータそのものを返す
110
- };
111
-
112
- class Converter {
113
- // WAVファイルの生成
114
- static createWav(samples, sampleRate) {
115
- const len = samples.length;
116
- const view = new DataView(new ArrayBuffer(44 + len));
117
- this._writeString(view, 0, 'RIFF');
118
- view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
119
- this._writeString(view, 8, 'WAVE');
120
- this._writeString(view, 12, 'fmt ');
121
- view.setUint32(16, 16, true);
122
- view.setUint16(20, 1, true); // リニアPCM
123
- view.setUint16(22, 1, true); // モノラル
124
- view.setUint32(24, sampleRate, true);
125
- view.setUint32(28, sampleRate * 2, true);
126
- view.setUint16(32, 2, true);
127
- view.setUint16(34, 16, true);
128
- this._writeString(view, 36, 'data');
129
- view.setUint32(40, len, true);
130
-
131
- for (let i = 0; i < len; i++) {
132
- view.setUint8(44 + i, samples[i]);
133
- }
134
-
135
- return view;
136
- }
137
-
138
- static _writeString(view, offset, string) {
139
- if (offset + string.length > view.byteLength) {
140
- throw new RangeError('Offset is outside the bounds of the DataView');
141
- }
142
- for (let i = 0; i < string.length; i++) {
143
- if (offset + i < view.byteLength) {
144
- view.setUint8(offset + i, string.charCodeAt(i));
145
- } else {
146
- throw new RangeError('Offset is outside the bounds of the DataView');
147
- }
148
- }
149
- }
150
- }
151
-
AWS LambdaNode.js

21

コード修正

2024/04/26 08:36

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -104,14 +104,10 @@
104
104
  decoderOn();
105
105
 
106
106
  // デコーダー関数
107
- function decoder(data, fragmentNumber) {
107
+ let decoder = function (data, fragmentNumber) {
108
108
  // ここでデコード処理を行う
109
109
  return data.Payload; // 今回はデータそのものを返す
110
- }
110
+ };
111
-
112
- function decoderOn() {
113
- // デコーダーのオン/オフの設定
114
- }
115
111
 
116
112
  class Converter {
117
113
  // WAVファイルの生成
@@ -153,12 +149,3 @@
153
149
  }
154
150
  }
155
151
 
156
-
157
-
158
- // デコーダー関数
159
- let decoder = function (data, fragmentNumber) {
160
- // ここでデコード処理を行う
161
- return data.Payload; // 今回はデータそのものを返す
162
- };
163
-
164
-
AWS LambdaNode.js

20

コード修正

2024/04/26 08:28

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -153,3 +153,12 @@
153
153
  }
154
154
  }
155
155
 
156
+
157
+
158
+ // デコーダー関数
159
+ let decoder = function (data, fragmentNumber) {
160
+ // ここでデコード処理を行う
161
+ return data.Payload; // 今回はデータそのものを返す
162
+ };
163
+
164
+
AWS LambdaNode.js

19

コード修正

2024/04/26 08:22

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,4 +4,152 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
+ import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
+ import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
9
+ import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
7
10
 
11
+ // リージョンやバケット名の設定
12
+ const region = 'ap-northeast-1';
13
+ const putKey = 'voice-message/wav/';
14
+ const bucketName = 'testname-pjcode';
15
+
16
+ // Lambda関数のエントリーポイント
17
+ export const handler = async (event) => {
18
+ // S3クライアントを作成
19
+ const s3Client = new S3Client({ region: region });
20
+
21
+ // イベントの各レコードに対して処理を実行
22
+ for (let record of event.Records) {
23
+ // information/yyyymmdd_×××をgetKeyに格納
24
+ const getKey = record.s3.object.key;
25
+ // '/'までの文字数10がindexに格納
26
+ let index = getKey.lastIndexOf('/');
27
+ let fileName = 'noname';
28
+
29
+ if (index >= 0) {
30
+ // getKeyに対して、文字数11以降("/")の文字列を取得
31
+ fileName = getKey.substr(index + 1);
32
+ }
33
+
34
+ // S3から録音データに関する情報を取得
35
+ const s3GetCommand = new GetObjectCommand({
36
+ Bucket: bucketName,
37
+ Key: getKey
38
+ });
39
+
40
+ const s3GetRes = await s3Client.send(s3GetCommand);
41
+ const info = await s3GetRes.Body.transformToString();
42
+ const infoStr = JSON.parse(info);
43
+ const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
44
+ const fragmentNumber = infoStr.startFragmentNumber;
45
+ const streamARN = infoStr.streamARN;
46
+
47
+ // Kinesis Video Media Clientを作成して、録音データを取得
48
+ const kvmClient = new KinesisVideoMediaClient({ region : region });
49
+ const kvmInput = {
50
+ StreamName: streamName,
51
+ StreamARN: streamARN,
52
+ StartSelector: {
53
+ StartSelectorType: 'FRAGMENT_NUMBER',
54
+ AfterFragmentNumber: fragmentNumber,
55
+ },
56
+ };
57
+
58
+ const kvmCommand = new GetMediaCommand(kvmInput);
59
+ const data = await kvmClient.send(kvmCommand);
60
+
61
+ // デコードされたデータをWAV形式に変換
62
+ const wav = Converter.createWav(data.Payload, 8000);
63
+
64
+ // WAVファイルをS3に保存
65
+ let tagging = ''; // 付加情報をタグに追加する
66
+ tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
67
+ tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
68
+ tagging += "startTimestamp=" + infoStr.startTimestamp;
69
+
70
+ const wavInput = new PutObjectCommand({
71
+ Bucket: bucketName,
72
+ Key: putKey + createKeyName() + fileName + '.wav',
73
+ Body: Buffer.from(wav.buffer),
74
+ Tagging: tagging
75
+ });
76
+
77
+ const wavRes = await s3Client.send(wavInput);
78
+ }
79
+ };
80
+
81
+ // S3バケット保存時のオブジェクト名を生成
82
+ function createKeyName() {
83
+ const date = new Date();
84
+ const year = date.getFullYear();
85
+ const mon = (date.getMonth() + 1);
86
+ const day = date.getDate();
87
+ const hour = date.getHours();
88
+
89
+ const space = (n) => {
90
+ return ('0' + (n)).slice(-2);
91
+ };
92
+
93
+ let result = year + '/';
94
+ result += space(mon) + '/';
95
+ result += space(day) + '/';
96
+ result += space(hour) + '/';
97
+ return result;
98
+ }
99
+
100
+ // Decoderの初期化
101
+ let chunks = [];
102
+ let decoder = function (data, chunk) {}; // 空のデコーダー関数
103
+
104
+ decoderOn();
105
+
106
+ // デコーダー関数
107
+ function decoder(data, fragmentNumber) {
108
+ // ここでデコード処理を行う
109
+ return data.Payload; // 今回はデータそのものを返す
110
+ }
111
+
112
+ function decoderOn() {
113
+ // デコーダーのオン/オフの設定
114
+ }
115
+
116
+ class Converter {
117
+ // WAVファイルの生成
118
+ static createWav(samples, sampleRate) {
119
+ const len = samples.length;
120
+ const view = new DataView(new ArrayBuffer(44 + len));
121
+ this._writeString(view, 0, 'RIFF');
122
+ view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
123
+ this._writeString(view, 8, 'WAVE');
124
+ this._writeString(view, 12, 'fmt ');
125
+ view.setUint32(16, 16, true);
126
+ view.setUint16(20, 1, true); // リニアPCM
127
+ view.setUint16(22, 1, true); // モノラル
128
+ view.setUint32(24, sampleRate, true);
129
+ view.setUint32(28, sampleRate * 2, true);
130
+ view.setUint16(32, 2, true);
131
+ view.setUint16(34, 16, true);
132
+ this._writeString(view, 36, 'data');
133
+ view.setUint32(40, len, true);
134
+
135
+ for (let i = 0; i < len; i++) {
136
+ view.setUint8(44 + i, samples[i]);
137
+ }
138
+
139
+ return view;
140
+ }
141
+
142
+ static _writeString(view, offset, string) {
143
+ if (offset + string.length > view.byteLength) {
144
+ throw new RangeError('Offset is outside the bounds of the DataView');
145
+ }
146
+ for (let i = 0; i < string.length; i++) {
147
+ if (offset + i < view.byteLength) {
148
+ view.setUint8(offset + i, string.charCodeAt(i));
149
+ } else {
150
+ throw new RangeError('Offset is outside the bounds of the DataView');
151
+ }
152
+ }
153
+ }
154
+ }
155
+
AWS LambdaNode.js

18

コード修正

2024/04/26 08:21

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,172 +4,4 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
- import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
- import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
9
- import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
10
7
 
11
- // リージョンやバケット名の設定
12
- const region = 'ap-northeast-1';
13
- const putKey = 'voice-message/wav/';
14
- const bucketName = 'testname-pjcode';
15
-
16
- // Lambda関数のエントリーポイント
17
- export const handler = async (event) => {
18
- // S3クライアントを作成
19
- const s3Client = new S3Client({ region: region });
20
-
21
- // イベントの各レコードに対して処理を実行
22
- for (let record of event.Records) {
23
- // information/yyyymmdd_×××をgetKeyに格納
24
- const getKey = record.s3.object.key;
25
- // '/'までの文字数10がindexに格納
26
- let index = getKey.lastIndexOf('/');
27
- let fileName = 'noname';
28
-
29
- if (index >= 0) {
30
- // getKeyに対して、文字数11以降("/")の文字列を取得
31
- fileName = getKey.substr(index + 1);
32
- }
33
-
34
- // S3から録音データに関する情報を取得
35
- const s3GetCommand = new GetObjectCommand({
36
- Bucket: bucketName,
37
- Key: getKey
38
- });
39
-
40
- const s3GetRes = await s3Client.send(s3GetCommand);
41
- const info = await s3GetRes.Body.transformToString();
42
- const infoStr = JSON.parse(info);
43
- const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
44
- const fragmentNumber = infoStr.startFragmentNumber;
45
- const streamARN = infoStr.streamARN;
46
-
47
- // Kinesis Video Media Clientを作成して、録音データを取得
48
- const kvmClient = new KinesisVideoMediaClient({ region : region });
49
- const kvmInput = {
50
- StreamName: streamName,
51
- StreamARN: streamARN,
52
- StartSelector: {
53
- StartSelectorType: 'FRAGMENT_NUMBER',
54
- AfterFragmentNumber: fragmentNumber,
55
- },
56
- };
57
-
58
- const kvmCommand = new GetMediaCommand(kvmInput);
59
- const data = await kvmClient.send(kvmCommand);
60
-
61
- // デコードされたデータをWAV形式に変換
62
- const wav = Converter.createWav(data.Payload, 8000);
63
-
64
- // WAVファイルをS3に保存
65
- let tagging = ''; // 付加情報をタグに追加する
66
- tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
67
- tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
68
- tagging += "startTimestamp=" + infoStr.startTimestamp;
69
-
70
- const wavInput = new PutObjectCommand({
71
- Bucket: bucketName,
72
- Key: putKey + createKeyName() + fileName + '.wav',
73
- Body: Buffer.from(wav.buffer),
74
- Tagging: tagging
75
- });
76
-
77
- const wavRes = await s3Client.send(wavInput);
78
- }
79
- };
80
-
81
- // S3バケット保存時のオブジェクト名を生成
82
- function createKeyName() {
83
- const date = new Date();
84
- const year = date.getFullYear();
85
- const mon = (date.getMonth() + 1);
86
- const day = date.getDate();
87
- const hour = date.getHours();
88
-
89
- const space = (n) => {
90
- return ('0' + (n)).slice(-2);
91
- };
92
-
93
- let result = year + '/';
94
- result += space(mon) + '/';
95
- result += space(day) + '/';
96
- result += space(hour) + '/';
97
- return result;
98
- }
99
-
100
- // Decoderの初期化
101
- let chunks = [];
102
- let decoder = function (data, chunk) {}; // 空のデコーダー関数
103
-
104
- decoderOn();
105
-
106
- // デコーダー関数
107
- function decoder(data, fragmentNumber) {
108
- // ここでデコード処理を行う
109
- return data.Payload; // 今回はデータそのものを返す
110
- }
111
-
112
- function decoderOn() {
113
- // デコーダーのオン/オフの設定
114
- }
115
-
116
- class Converter {
117
- // WAVファイルの生成
118
- static createWav(samples, sampleRate) {
119
- const len = samples.length;
120
- const view = new DataView(new ArrayBuffer(44 + len));
121
- this._writeString(view, 0, 'RIFF');
122
- view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
123
- this._writeString(view, 8, 'WAVE');
124
- this._writeString(view, 12, 'fmt ');
125
- view.setUint32(16, 16, true);
126
- view.setUint16(20, 1, true); // リニアPCM
127
- view.setUint16(22, 1, true); // モノラル
128
- view.setUint32(24, sampleRate, true);
129
- view.setUint32(28, sampleRate * 2, true);
130
- view.setUint16(32, 2, true);
131
- view.setUint16(34, 16, true);
132
- this._writeString(view, 36, 'data');
133
- view.setUint32(40, len, true);
134
-
135
- for (let i = 0; i < len; i++) {
136
- view.setUint8(44 + i, samples[i]);
137
- }
138
-
139
- return view;
140
- }
141
-
142
- static _writeString(view, offset, string) {
143
- if (offset + string.length > view.byteLength) {
144
- throw new RangeError('Offset is outside the bounds of the DataView');
145
- }
146
- for (let i = 0; i < string.length; i++) {
147
- if (offset + i < view.byteLength) {
148
- view.setUint8(offset + i, string.charCodeAt(i));
149
- } else {
150
- throw new RangeError('Offset is outside the bounds of the DataView');
151
- }
152
- }
153
- }
154
- }
155
-
156
-
157
-
158
- static _writeString(view, offset, string) {
159
- if (offset + string.length > view.byteLength) {
160
- throw new RangeError('Offset is outside the bounds of the DataView');
161
- }
162
- for (let i = 0; i < string.length; i++) {
163
- if (offset + i < view.byteLength) {
164
- view.setUint8(offset + i, string.charCodeAt(i));
165
- } else {
166
- throw new RangeError('Offset is outside the bounds of the DataView');
167
- }
168
- }
169
- }
170
-
171
-
172
-
173
-
174
-
175
-
AWS LambdaNode.js

17

コード修正

2024/04/26 08:19

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -160,17 +160,6 @@
160
160
  throw new RangeError('Offset is outside the bounds of the DataView');
161
161
  }
162
162
  for (let i = 0; i < string.length; i++) {
163
- view.setUint8(offset + i, string.charCodeAt(i));
164
- }
165
- }
166
-
167
-
168
-
169
- static _writeString(view, offset, string) {
170
- if (offset + string.length > view.byteLength) {
171
- throw new RangeError('Offset is outside the bounds of the DataView');
172
- }
173
- for (let i = 0; i < string.length; i++) {
174
163
  if (offset + i < view.byteLength) {
175
164
  view.setUint8(offset + i, string.charCodeAt(i));
176
165
  } else {
AWS LambdaNode.js

16

コード修正

2024/04/26 08:11

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -165,3 +165,22 @@
165
165
  }
166
166
 
167
167
 
168
+
169
+ static _writeString(view, offset, string) {
170
+ if (offset + string.length > view.byteLength) {
171
+ throw new RangeError('Offset is outside the bounds of the DataView');
172
+ }
173
+ for (let i = 0; i < string.length; i++) {
174
+ if (offset + i < view.byteLength) {
175
+ view.setUint8(offset + i, string.charCodeAt(i));
176
+ } else {
177
+ throw new RangeError('Offset is outside the bounds of the DataView');
178
+ }
179
+ }
180
+ }
181
+
182
+
183
+
184
+
185
+
186
+
AWS LambdaNode.js

15

コード修正

2024/04/26 08:07

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -153,3 +153,15 @@
153
153
  }
154
154
  }
155
155
 
156
+
157
+
158
+ static _writeString(view, offset, string) {
159
+ if (offset + string.length > view.byteLength) {
160
+ throw new RangeError('Offset is outside the bounds of the DataView');
161
+ }
162
+ for (let i = 0; i < string.length; i++) {
163
+ view.setUint8(offset + i, string.charCodeAt(i));
164
+ }
165
+ }
166
+
167
+
AWS LambdaNode.js

14

コード修正

2024/04/26 08:04

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -153,35 +153,3 @@
153
153
  }
154
154
  }
155
155
 
156
-
157
-
158
-
159
-
160
-
161
-
162
-
163
- static createWav(samples, sampleRate) {
164
- const len = samples.length;
165
- const view = new DataView(new ArrayBuffer(44 + len));
166
- this._writeString(view, 0, 'RIFF');
167
- view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
168
- this._writeString(view, 8, 'WAVE');
169
- this._writeString(view, 12, 'fmt ');
170
- view.setUint32(16, 16, true);
171
- view.setUint16(20, 1, true); // リニアPCM
172
- view.setUint16(22, 1, true); // モノラル
173
- view.setUint32(24, sampleRate, true);
174
- view.setUint32(28, sampleRate * 2, true);
175
- view.setUint16(32, 2, true);
176
- view.setUint16(34, 16, true);
177
- this._writeString(view, 36, 'data');
178
- view.setUint32(40, len, true);
179
-
180
- for (let i = 0; i < len; i++) {
181
- view.setUint8(44 + i, samples[i]);
182
- }
183
-
184
- return view;
185
- }
186
-
187
-
AWS LambdaNode.js

13

コード修正

2024/04/26 08:02

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -152,3 +152,36 @@
152
152
  }
153
153
  }
154
154
  }
155
+
156
+
157
+
158
+
159
+
160
+
161
+
162
+
163
+ static createWav(samples, sampleRate) {
164
+ const len = samples.length;
165
+ const view = new DataView(new ArrayBuffer(44 + len));
166
+ this._writeString(view, 0, 'RIFF');
167
+ view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
168
+ this._writeString(view, 8, 'WAVE');
169
+ this._writeString(view, 12, 'fmt ');
170
+ view.setUint32(16, 16, true);
171
+ view.setUint16(20, 1, true); // リニアPCM
172
+ view.setUint16(22, 1, true); // モノラル
173
+ view.setUint32(24, sampleRate, true);
174
+ view.setUint32(28, sampleRate * 2, true);
175
+ view.setUint16(32, 2, true);
176
+ view.setUint16(34, 16, true);
177
+ this._writeString(view, 36, 'data');
178
+ view.setUint32(40, len, true);
179
+
180
+ for (let i = 0; i < len; i++) {
181
+ view.setUint8(44 + i, samples[i]);
182
+ }
183
+
184
+ return view;
185
+ }
186
+
187
+
AWS LambdaNode.js

12

コード修正

2024/04/26 07:52

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -115,52 +115,6 @@
115
115
 
116
116
  class Converter {
117
117
  // WAVファイルの生成
118
- static createWav(samples, sampleRate) {
119
- const len = samples.byteLength;
120
- const view = new DataView(new ArrayBuffer(44 + len));
121
- this._writeString(view, 0, 'RIFF');
122
- view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
123
- this._writeString(view, 8, 'WAVE');
124
- this._writeString(view, 12, 'fmt ');
125
- view.setUint32(16, 16, true);
126
- view.setUint16(20, 1, true); // リニアPCM
127
- view.setUint16(22, 1, true); // モノラル
128
- view.setUint32(24, sampleRate, true);
129
- view.setUint32(28, sampleRate * 2, true);
130
- view.setUint16(32, 2, true);
131
- view.setUint16(34, 16, true);
132
- this._writeString(view, 36, 'data');
133
- view.setUint32(40, len, true);
134
-
135
- const srcView = new DataView(samples);
136
- let offset = 44;
137
- for (let i = 0; i < len; i++) {
138
- if (offset + i >= view.byteLength) {
139
- throw new RangeError('Offset is outside the bounds of the DataView');
140
- }
141
- view.setUint8(offset + i, srcView.getUint8(i));
142
- }
143
-
144
- return view;
145
- }
146
-
147
- static _writeString(view, offset, string) {
148
- if (offset + string.length > view.byteLength) {
149
- throw new RangeError('Offset is outside the bounds of the DataView');
150
- }
151
- for (let i = 0; i < string.length; i++) {
152
- if (offset + i < view.byteLength) {
153
- view.setUint8(offset + i, string.charCodeAt(i));
154
- } else {
155
- throw new RangeError('Offset is outside the bounds of the DataView');
156
- }
157
- }
158
- }
159
- }
160
-
161
-
162
-
163
-
164
118
  static createWav(samples, sampleRate) {
165
119
  const len = samples.length;
166
120
  const view = new DataView(new ArrayBuffer(44 + len));
@@ -185,3 +139,16 @@
185
139
  return view;
186
140
  }
187
141
 
142
+ static _writeString(view, offset, string) {
143
+ if (offset + string.length > view.byteLength) {
144
+ throw new RangeError('Offset is outside the bounds of the DataView');
145
+ }
146
+ for (let i = 0; i < string.length; i++) {
147
+ if (offset + i < view.byteLength) {
148
+ view.setUint8(offset + i, string.charCodeAt(i));
149
+ } else {
150
+ throw new RangeError('Offset is outside the bounds of the DataView');
151
+ }
152
+ }
153
+ }
154
+ }
AWS LambdaNode.js

11

コード修正

2024/04/26 07:49

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -158,3 +158,30 @@
158
158
  }
159
159
  }
160
160
 
161
+
162
+
163
+
164
+ static createWav(samples, sampleRate) {
165
+ const len = samples.length;
166
+ const view = new DataView(new ArrayBuffer(44 + len));
167
+ this._writeString(view, 0, 'RIFF');
168
+ view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
169
+ this._writeString(view, 8, 'WAVE');
170
+ this._writeString(view, 12, 'fmt ');
171
+ view.setUint32(16, 16, true);
172
+ view.setUint16(20, 1, true); // リニアPCM
173
+ view.setUint16(22, 1, true); // モノラル
174
+ view.setUint32(24, sampleRate, true);
175
+ view.setUint32(28, sampleRate * 2, true);
176
+ view.setUint16(32, 2, true);
177
+ view.setUint16(34, 16, true);
178
+ this._writeString(view, 36, 'data');
179
+ view.setUint32(40, len, true);
180
+
181
+ for (let i = 0; i < len; i++) {
182
+ view.setUint8(44 + i, samples[i]);
183
+ }
184
+
185
+ return view;
186
+ }
187
+
AWS LambdaNode.js

10

コード修正

2024/04/26 07:46

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,5 +4,157 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
+ import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
+ import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
9
+ import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
7
10
 
11
+ // リージョンやバケット名の設定
12
+ const region = 'ap-northeast-1';
13
+ const putKey = 'voice-message/wav/';
14
+ const bucketName = 'testname-pjcode';
8
15
 
16
+ // Lambda関数のエントリーポイント
17
+ export const handler = async (event) => {
18
+ // S3クライアントを作成
19
+ const s3Client = new S3Client({ region: region });
20
+
21
+ // イベントの各レコードに対して処理を実行
22
+ for (let record of event.Records) {
23
+ // information/yyyymmdd_×××をgetKeyに格納
24
+ const getKey = record.s3.object.key;
25
+ // '/'までの文字数10がindexに格納
26
+ let index = getKey.lastIndexOf('/');
27
+ let fileName = 'noname';
28
+
29
+ if (index >= 0) {
30
+ // getKeyに対して、文字数11以降("/")の文字列を取得
31
+ fileName = getKey.substr(index + 1);
32
+ }
33
+
34
+ // S3から録音データに関する情報を取得
35
+ const s3GetCommand = new GetObjectCommand({
36
+ Bucket: bucketName,
37
+ Key: getKey
38
+ });
39
+
40
+ const s3GetRes = await s3Client.send(s3GetCommand);
41
+ const info = await s3GetRes.Body.transformToString();
42
+ const infoStr = JSON.parse(info);
43
+ const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
44
+ const fragmentNumber = infoStr.startFragmentNumber;
45
+ const streamARN = infoStr.streamARN;
46
+
47
+ // Kinesis Video Media Clientを作成して、録音データを取得
48
+ const kvmClient = new KinesisVideoMediaClient({ region : region });
49
+ const kvmInput = {
50
+ StreamName: streamName,
51
+ StreamARN: streamARN,
52
+ StartSelector: {
53
+ StartSelectorType: 'FRAGMENT_NUMBER',
54
+ AfterFragmentNumber: fragmentNumber,
55
+ },
56
+ };
57
+
58
+ const kvmCommand = new GetMediaCommand(kvmInput);
59
+ const data = await kvmClient.send(kvmCommand);
60
+
61
+ // デコードされたデータをWAV形式に変換
62
+ const wav = Converter.createWav(data.Payload, 8000);
63
+
64
+ // WAVファイルをS3に保存
65
+ let tagging = ''; // 付加情報をタグに追加する
66
+ tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
67
+ tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
68
+ tagging += "startTimestamp=" + infoStr.startTimestamp;
69
+
70
+ const wavInput = new PutObjectCommand({
71
+ Bucket: bucketName,
72
+ Key: putKey + createKeyName() + fileName + '.wav',
73
+ Body: Buffer.from(wav.buffer),
74
+ Tagging: tagging
75
+ });
76
+
77
+ const wavRes = await s3Client.send(wavInput);
78
+ }
79
+ };
80
+
81
+ // S3バケット保存時のオブジェクト名を生成
82
+ function createKeyName() {
83
+ const date = new Date();
84
+ const year = date.getFullYear();
85
+ const mon = (date.getMonth() + 1);
86
+ const day = date.getDate();
87
+ const hour = date.getHours();
88
+
89
+ const space = (n) => {
90
+ return ('0' + (n)).slice(-2);
91
+ };
92
+
93
+ let result = year + '/';
94
+ result += space(mon) + '/';
95
+ result += space(day) + '/';
96
+ result += space(hour) + '/';
97
+ return result;
98
+ }
99
+
100
+ // Decoderの初期化
101
+ let chunks = [];
102
+ let decoder = function (data, chunk) {}; // 空のデコーダー関数
103
+
104
+ decoderOn();
105
+
106
+ // デコーダー関数
107
+ function decoder(data, fragmentNumber) {
108
+ // ここでデコード処理を行う
109
+ return data.Payload; // 今回はデータそのものを返す
110
+ }
111
+
112
+ function decoderOn() {
113
+ // デコーダーのオン/オフの設定
114
+ }
115
+
116
+ class Converter {
117
+ // WAVファイルの生成
118
+ static createWav(samples, sampleRate) {
119
+ const len = samples.byteLength;
120
+ const view = new DataView(new ArrayBuffer(44 + len));
121
+ this._writeString(view, 0, 'RIFF');
122
+ view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
123
+ this._writeString(view, 8, 'WAVE');
124
+ this._writeString(view, 12, 'fmt ');
125
+ view.setUint32(16, 16, true);
126
+ view.setUint16(20, 1, true); // リニアPCM
127
+ view.setUint16(22, 1, true); // モノラル
128
+ view.setUint32(24, sampleRate, true);
129
+ view.setUint32(28, sampleRate * 2, true);
130
+ view.setUint16(32, 2, true);
131
+ view.setUint16(34, 16, true);
132
+ this._writeString(view, 36, 'data');
133
+ view.setUint32(40, len, true);
134
+
135
+ const srcView = new DataView(samples);
136
+ let offset = 44;
137
+ for (let i = 0; i < len; i++) {
138
+ if (offset + i >= view.byteLength) {
139
+ throw new RangeError('Offset is outside the bounds of the DataView');
140
+ }
141
+ view.setUint8(offset + i, srcView.getUint8(i));
142
+ }
143
+
144
+ return view;
145
+ }
146
+
147
+ static _writeString(view, offset, string) {
148
+ if (offset + string.length > view.byteLength) {
149
+ throw new RangeError('Offset is outside the bounds of the DataView');
150
+ }
151
+ for (let i = 0; i < string.length; i++) {
152
+ if (offset + i < view.byteLength) {
153
+ view.setUint8(offset + i, string.charCodeAt(i));
154
+ } else {
155
+ throw new RangeError('Offset is outside the bounds of the DataView');
156
+ }
157
+ }
158
+ }
159
+ }
160
+
AWS LambdaNode.js

9

コード修正

2024/04/26 07:46

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,157 +4,5 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
- import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
- import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
9
- import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
10
7
 
11
- // リージョンやバケット名の設定
12
- const region = 'ap-northeast-1';
13
- const putKey = 'voice-message/wav/';
14
- const bucketName = 'testname-pjcode';
15
8
 
16
- // Lambda関数のエントリーポイント
17
- export const handler = async (event) => {
18
- // S3クライアントを作成
19
- const s3Client = new S3Client({ region: region });
20
-
21
- // イベントの各レコードに対して処理を実行
22
- for (let record of event.Records) {
23
- // information/yyyymmdd_×××をgetKeyに格納
24
- const getKey = record.s3.object.key;
25
- // '/'までの文字数10がindexに格納
26
- let index = getKey.lastIndexOf('/');
27
- let fileName = 'noname';
28
-
29
- if (index >= 0) {
30
- // getKeyに対して、文字数11以降("/")の文字列を取得
31
- fileName = getKey.substr(index + 1);
32
- }
33
-
34
- // S3から録音データに関する情報を取得
35
- const s3GetCommand = new GetObjectCommand({
36
- Bucket: bucketName,
37
- Key: getKey
38
- });
39
-
40
- const s3GetRes = await s3Client.send(s3GetCommand);
41
- const info = await s3GetRes.Body.transformToString();
42
- const infoStr = JSON.parse(info);
43
- const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
44
- const fragmentNumber = infoStr.startFragmentNumber;
45
- const streamARN = infoStr.streamARN;
46
-
47
- // Kinesis Video Media Clientを作成して、録音データを取得
48
- const kvmClient = new KinesisVideoMediaClient({ region : region });
49
- const kvmInput = {
50
- StreamName: streamName,
51
- StreamARN: streamARN,
52
- StartSelector: {
53
- StartSelectorType: 'FRAGMENT_NUMBER',
54
- AfterFragmentNumber: fragmentNumber,
55
- },
56
- };
57
-
58
- const kvmCommand = new GetMediaCommand(kvmInput);
59
- const data = await kvmClient.send(kvmCommand);
60
-
61
- // デコードされたデータをWAV形式に変換
62
- const wav = Converter.createWav(data.Payload, 8000);
63
-
64
- // WAVファイルをS3に保存
65
- let tagging = ''; // 付加情報をタグに追加する
66
- tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
67
- tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
68
- tagging += "startTimestamp=" + infoStr.startTimestamp;
69
-
70
- const wavInput = new PutObjectCommand({
71
- Bucket: bucketName,
72
- Key: putKey + createKeyName() + fileName + '.wav',
73
- Body: Buffer.from(wav.buffer),
74
- Tagging: tagging
75
- });
76
-
77
- const wavRes = await s3Client.send(wavInput);
78
- }
79
- };
80
-
81
- // S3バケット保存時のオブジェクト名を生成
82
- function createKeyName() {
83
- const date = new Date();
84
- const year = date.getFullYear();
85
- const mon = (date.getMonth() + 1);
86
- const day = date.getDate();
87
- const hour = date.getHours();
88
-
89
- const space = (n) => {
90
- return ('0' + (n)).slice(-2);
91
- };
92
-
93
- let result = year + '/';
94
- result += space(mon) + '/';
95
- result += space(day) + '/';
96
- result += space(hour) + '/';
97
- return result;
98
- }
99
-
100
- // Decoderの初期化
101
- let chunks = [];
102
- let decoder = function (data, chunk) {}; // 空のデコーダー関数
103
-
104
- decoderOn();
105
-
106
- // デコーダー関数
107
- function decoder(data, fragmentNumber) {
108
- // ここでデコード処理を行う
109
- return data.Payload; // 今回はデータそのものを返す
110
- }
111
-
112
- function decoderOn() {
113
- // デコーダーのオン/オフの設定
114
- }
115
-
116
- class Converter {
117
- // WAVファイルの生成
118
- static createWav(samples, sampleRate) {
119
- const len = samples.byteLength;
120
- const view = new DataView(new ArrayBuffer(44 + len));
121
- this._writeString(view, 0, 'RIFF');
122
- view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
123
- this._writeString(view, 8, 'WAVE');
124
- this._writeString(view, 12, 'fmt ');
125
- view.setUint32(16, 16, true);
126
- view.setUint16(20, 1, true); // リニアPCM
127
- view.setUint16(22, 1, true); // モノラル
128
- view.setUint32(24, sampleRate, true);
129
- view.setUint32(28, sampleRate * 2, true);
130
- view.setUint16(32, 2, true);
131
- view.setUint16(34, 16, true);
132
- this._writeString(view, 36, 'data');
133
- view.setUint32(40, len, true);
134
-
135
- const srcView = new DataView(samples);
136
- let offset = 44;
137
- for (let i = 0; i < len; i++) {
138
- if (offset + i >= view.byteLength) {
139
- throw new RangeError('Offset is outside the bounds of the DataView');
140
- }
141
- view.setUint8(offset + i, srcView.getUint8(i));
142
- }
143
-
144
- return view;
145
- }
146
-
147
- static _writeString(view, offset, string) {
148
- if (offset + string.length > view.byteLength) {
149
- throw new RangeError('Offset is outside the bounds of the DataView');
150
- }
151
- for (let i = 0; i < string.length; i++) {
152
- if (offset + i < view.byteLength) {
153
- view.setUint8(offset + i, string.charCodeAt(i));
154
- } else {
155
- throw new RangeError('Offset is outside the bounds of the DataView');
156
- }
157
- }
158
- }
159
- }
160
-
AWS LambdaNode.js

8

コード修正

2024/04/25 05:07

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -50,30 +50,28 @@
50
50
  StreamName: streamName,
51
51
  StreamARN: streamARN,
52
52
  StartSelector: {
53
+ StartSelectorType: 'FRAGMENT_NUMBER',
53
- StartSelectorType: fragmentNumber,
54
+ AfterFragmentNumber: fragmentNumber,
54
55
  },
55
56
  };
56
57
 
57
58
  const kvmCommand = new GetMediaCommand(kvmInput);
58
59
  const data = await kvmClient.send(kvmCommand);
59
60
 
60
- // Kinesis Video StreamsからRAWデータの取得
61
- const raw = await getMedia(streamName, fragmentNumber);
62
-
63
- // RAWデータからWAVファイルを作成
61
+ // デコードされたデータをWAV形式に変換
64
- const wav = Converter.createWav(raw, 8000);
62
+ const wav = Converter.createWav(data.Payload, 8000);
65
63
 
66
64
  // WAVファイルをS3に保存
67
65
  let tagging = ''; // 付加情報をタグに追加する
68
- tagging += "customerEndpoint=" + info.customerEndpoint + '&';
66
+ tagging += "customerEndpoint=" + infoStr.customerEndpoint + '&';
69
- tagging += "systemEndpoint=" + info.systemEndpoint + '&';
67
+ tagging += "systemEndpoint=" + infoStr.systemEndpoint + '&';
70
- tagging += "startTimestamp=" + info.startTimestamp;
68
+ tagging += "startTimestamp=" + infoStr.startTimestamp;
71
69
 
72
70
  const wavInput = new PutObjectCommand({
73
71
  Bucket: bucketName,
74
- Key: putKey + createKeyName() + fileName + '.wav',
72
+ Key: putKey + createKeyName() + fileName + '.wav',
75
73
  Body: Buffer.from(wav.buffer),
76
- Tag: tagging
74
+ Tagging: tagging
77
75
  });
78
76
 
79
77
  const wavRes = await s3Client.send(wavInput);
@@ -101,58 +99,18 @@
101
99
 
102
100
  // Decoderの初期化
103
101
  let chunks = [];
104
- let decoder = function () {};
105
- function decoderOn() {
106
- decoder = function (data, chunk) {
102
+ let decoder = function (data, chunk) {}; // 空のデコーダー関数
107
- if(chunk[1].name == 'SimpleBlock'){
108
- chunks.push(chunk[1].data);
109
- }
110
-
111
- for(let chunk of chunks){
112
- if(chunk[1].name == 'SimpleBlock'){
113
- chunks.push(chunk[1].data);
114
- }
115
- }
116
- return chunk;
117
- };
118
- }
119
103
 
120
104
  decoderOn();
121
105
 
122
- // 録音データの取得・wavデータへの変換
106
+ // デコーダー関数
123
- async function getMedia(streamName, fragmentNumber) {
107
+ function decoder(data, fragmentNumber) {
124
- let kvInput = {
125
- APIName: "GET_MEDIA",
126
- StreamName: streamName
108
+ // ここでデコード処理を行う
109
+ return data.Payload; // 今回はデータそのものを返す
127
- };
110
+ }
128
111
 
129
- // Endpointの取得
130
- const kvClient = new KinesisVideoClient({ region : region });
131
- const kvCommand = new GetDataEndpointCommand(kvInput);
132
- const end = await kvClient.send(kvCommand);
133
-
134
- let kvmInput = {
135
- StartSelector: {
112
+ function decoderOn() {
136
- StartSelectorType: "FRAGMENT_NUMBER",
137
- AfterFragmentNumber:fragmentNumber,
138
- },
139
- StreamName: streamName
140
- };
141
-
142
- // RAWデータの取得
143
- const kvmClient = new KinesisVideoMediaClient({ endpoint: end.DataEndpoint, region : region });
144
- const kvmCommand = new GetMediaCommand(kvmInput);
145
- const data = await kvmClient.send(kvmCommand);
146
-
147
- //取得したRAWデータをでコード
148
- const decodedData = decoder(data, fragmentNumber);
149
-
150
- // デコードされたデータをWAV形式に変換
113
+ // デコーダーのオン/オフの設定
151
- const wav = Converter.createWav(decodedData, 8000);
152
-
153
- return wav.buffer;
154
-
155
-
156
114
  }
157
115
 
158
116
  class Converter {
@@ -188,12 +146,15 @@
188
146
 
189
147
  static _writeString(view, offset, string) {
190
148
  if (offset + string.length > view.byteLength) {
191
- throw new RangeError('Offset is outside the bounds of the DataView');
149
+ throw new RangeError('Offset is outside the bounds of the DataView');
192
150
  }
193
- for (let i = 0; i < len; i++) {
151
+ for (let i = 0; i < string.length; i++) {
194
152
  if (offset + i < view.byteLength) {
195
- view.setUint8(offset + i, srcView.getUint8(i));
153
+ view.setUint8(offset + i, string.charCodeAt(i));
196
154
  } else {
197
155
  throw new RangeError('Offset is outside the bounds of the DataView');
156
+ }
198
157
  }
199
158
  }
159
+ }
160
+
AWS LambdaNode.js

7

コード修正

2024/04/25 01:55

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -161,29 +161,39 @@
161
161
  const len = samples.byteLength;
162
162
  const view = new DataView(new ArrayBuffer(44 + len));
163
163
  this._writeString(view, 0, 'RIFF');
164
- view.setUint32(4, 32 + len, true);
164
+ view.setUint32(4, 36 + len, true); // RIFFのサイズを修正
165
165
  this._writeString(view, 8, 'WAVE');
166
166
  this._writeString(view, 12, 'fmt ');
167
167
  view.setUint32(16, 16, true);
168
168
  view.setUint16(20, 1, true); // リニアPCM
169
169
  view.setUint16(22, 1, true); // モノラル
170
- view.setUint32(24, sampleRate, true);
170
+ view.setUint32(24, sampleRate, true);
171
171
  view.setUint32(28, sampleRate * 2, true);
172
172
  view.setUint16(32, 2, true);
173
173
  view.setUint16(34, 16, true);
174
174
  this._writeString(view, 36, 'data');
175
175
  view.setUint32(40, len, true);
176
+
177
+ const srcView = new DataView(samples);
176
178
  let offset = 44;
177
- const srcView = new DataView(samples);
178
- for (var i = 0; i < len; i+=4, offset+=4) {
179
+ for (let i = 0; i < len; i++) {
180
+ if (offset + i >= view.byteLength) {
181
+ throw new RangeError('Offset is outside the bounds of the DataView');
182
+ }
179
- view.setInt32(offset, srcView.getUint32(i), true);
183
+ view.setUint8(offset + i, srcView.getUint8(i));
180
184
  }
185
+
181
186
  return view;
182
187
  }
183
188
 
184
189
  static _writeString(view, offset, string) {
190
+ if (offset + string.length > view.byteLength) {
191
+ throw new RangeError('Offset is outside the bounds of the DataView');
192
+ }
185
- for (var i = 0; i < string.length; i++) {
193
+ for (let i = 0; i < len; i++) {
194
+ if (offset + i < view.byteLength) {
186
- view.setUint8(offset + i, string.charCodeAt(i));
195
+ view.setUint8(offset + i, srcView.getUint8(i));
196
+ } else {
197
+ throw new RangeError('Offset is outside the bounds of the DataView');
187
198
  }
188
199
  }
189
- }
AWS LambdaNode.js

6

コード修正

2024/04/25 00:49

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -10,8 +10,8 @@
10
10
 
11
11
  // リージョンやバケット名の設定
12
12
  const region = 'ap-northeast-1';
13
- const putKey = 'my-voicemessageXXXXXXXXX/wav/';
13
+ const putKey = 'voice-message/wav/';
14
- const bucketName = 'my-baseXXXXXXXXX';
14
+ const bucketName = 'testname-pjcode';
15
15
 
16
16
  // Lambda関数のエントリーポイント
17
17
  export const handler = async (event) => {
@@ -151,6 +151,8 @@
151
151
  const wav = Converter.createWav(decodedData, 8000);
152
152
 
153
153
  return wav.buffer;
154
+
155
+
154
156
  }
155
157
 
156
158
  class Converter {
AWS LambdaNode.js

5

コード修正

2024/04/19 08:01

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -146,25 +146,11 @@
146
146
 
147
147
  //取得したRAWデータをでコード
148
148
  const decodedData = decoder(data, fragmentNumber);
149
+
150
+ // デコードされたデータをWAV形式に変換
151
+ const wav = Converter.createWav(decodedData, 8000);
149
152
 
150
- // 取得したRAWデータをWAV形式に変換
151
- const margin = 4;
152
- var sumLength = 0;
153
- chunks.forEach( chunk => {
154
- sumLength += chunk.byteLength - margin;
155
- });
156
- var sample = new Uint8Array(sumLength);
157
- var pos = 0;
158
- chunks.forEach(chunk => {
159
- let tmp = new Uint8Array(chunk.byteLength - margin);
160
- for(var e = 0; e < chunk.byteLength - margin; e++){
161
- tmp[e] = chunk[e + margin];
162
- }
163
- sample.set(tmp, pos);
164
- pos += chunk.byteLength - margin;
165
-
166
- });
167
- return sample.buffer;
153
+ return wav.buffer;
168
154
  }
169
155
 
170
156
  class Converter {
AWS LambdaNode.js

4

コードを修正

2024/04/19 06:48

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -103,7 +103,7 @@
103
103
  let chunks = [];
104
104
  let decoder = function () {};
105
105
  function decoderOn() {
106
- decoder.on = function (data, chunk) {
106
+ decoder = function (data, chunk) {
107
107
  if(chunk[1].name == 'SimpleBlock'){
108
108
  chunks.push(chunk[1].data);
109
109
  }
@@ -143,6 +143,9 @@
143
143
  const kvmClient = new KinesisVideoMediaClient({ endpoint: end.DataEndpoint, region : region });
144
144
  const kvmCommand = new GetMediaCommand(kvmInput);
145
145
  const data = await kvmClient.send(kvmCommand);
146
+
147
+ //取得したRAWデータをでコード
148
+ const decodedData = decoder(data, fragmentNumber);
146
149
 
147
150
  // 取得したRAWデータをWAV形式に変換
148
151
  const margin = 4;
@@ -196,5 +199,3 @@
196
199
  }
197
200
  }
198
201
  }
199
-
200
-
AWS LambdaNode.js

3

コードを修正

2024/04/12 06:27

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,47 +4,28 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
- // import { ebml } from './node/nodejs';
7
+ import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
8
- const ebml = import('ebml');
9
- console.log(`===ebml===：${ebml}`);
10
- console.log('process.env.NODE_PATH==');
11
- console.log(process.env.NODE_PATH);
12
-
13
- // 「test-voice-message-infomation」でS3に保存されたデータ（発信者番号、ストリーム名、フラグメント番号など）をもとに、
8
+ import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
14
- // Amazon Kinesis Video Streamsから、RAWファイルをWAVファイルに変換し、S3に保存する。
9
+ import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
10
+
15
-
11
+ // リージョンやバケット名の設定
16
12
  const region = 'ap-northeast-1';
17
- const putKey = 'voice-message/wav/';
13
+ const putKey = 'my-voicemessageXXXXXXXXX/wav/';
18
14
  const bucketName = 'my-baseXXXXXXXXX';
19
15
 
20
- // S3インポート
16
+ // Lambda関数のエントリーポイント
21
- import { GetObjectCommand, PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
22
- // Amazon Kinesis Videoインポート
23
- import { KinesisVideoClient, GetDataEndpointCommand } from "@aws-sdk/client-kinesis-video";
24
- // Amazon Kinesis Video mediaインポート
25
- import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
26
- const kvmClient = new KinesisVideoMediaClient({ region : region });
27
- // ebmlのインポート ★importの書き方がよくわからない★
28
- // const ebml = import('ebml');
29
-
30
-
31
17
  export const handler = async (event) => {
32
-
33
- console.log('==process.env.NODE_PATH==')
34
- console.log(process.env.NODE_PATH)
35
- console.log(JSON.stringify(event));
36
-
37
- const region = 'ap-northeast-1';
18
+ // S3クライアントを作成
38
19
  const s3Client = new S3Client({ region: region });
20
+
39
-
21
+ // イベントの各レコードに対して処理を実行
40
22
  for (let record of event.Records) {
41
23
  // information/yyyymmdd_×××をgetKeyに格納
42
24
  const getKey = record.s3.object.key;
43
-
44
25
  // '/'までの文字数10がindexに格納
45
26
  let index = getKey.lastIndexOf('/');
46
27
  let fileName = 'noname';
47
-
28
+
48
29
  if (index >= 0) {
49
30
  // getKeyに対して、文字数11以降("/")の文字列を取得
50
31
  fileName = getKey.substr(index + 1);
@@ -59,16 +40,12 @@
59
40
  const s3GetRes = await s3Client.send(s3GetCommand);
60
41
  const info = await s3GetRes.Body.transformToString();
61
42
  const infoStr = JSON.parse(info);
62
- console.log(`==info==:${info}`);
63
- console.log(`==infoStr==:${infoStr}`);
64
-
65
43
  const streamName = infoStr.streamARN.split('stream/')[1].split('/')[0];
66
44
  const fragmentNumber = infoStr.startFragmentNumber;
67
45
  const streamARN = infoStr.streamARN;
68
- console.log(`==streamName==:${streamName}`);
46
+
69
- console.log(`==fragmentNumber==:${fragmentNumber}`);
70
-
71
- // Kinesis Video StreamsからRAWデータの取得
47
+ // Kinesis Video Media Clientを作成して、録音データを取得
48
+ const kvmClient = new KinesisVideoMediaClient({ region : region });
72
49
  const kvmInput = {
73
50
  StreamName: streamName,
74
51
  StreamARN: streamARN,
@@ -79,18 +56,18 @@
79
56
 
80
57
  const kvmCommand = new GetMediaCommand(kvmInput);
81
58
  const data = await kvmClient.send(kvmCommand);
82
-
59
+
83
60
  // Kinesis Video StreamsからRAWデータの取得
84
61
  const raw = await getMedia(streamName, fragmentNumber);
62
+
85
63
  // RAWデータからWAVファイルを作成
86
64
  const wav = Converter.createWav(raw, 8000);
87
-
65
+
88
66
  // WAVファイルをS3に保存
89
67
  let tagging = ''; // 付加情報をタグに追加する
90
68
  tagging += "customerEndpoint=" + info.customerEndpoint + '&';
91
69
  tagging += "systemEndpoint=" + info.systemEndpoint + '&';
92
70
  tagging += "startTimestamp=" + info.startTimestamp;
93
- // await s3.put(bucketName, putKey + createKeyName() + fileName + '.wav', Buffer.from(wav.buffer), tagging)
94
71
 
95
72
  const wavInput = new PutObjectCommand({
96
73
  Bucket: bucketName,
@@ -100,13 +77,11 @@
100
77
  });
101
78
 
102
79
  const wavRes = await s3Client.send(wavInput);
103
-
80
+ }
104
- } // for
81
+ };
105
- }; // export const handler
106
82
 
107
83
  // S3バケット保存時のオブジェクト名を生成
108
84
  function createKeyName() {
109
-
110
85
  const date = new Date();
111
86
  const year = date.getFullYear();
112
87
  const mon = (date.getMonth() + 1);
@@ -114,7 +89,6 @@
114
89
  const hour = date.getHours();
115
90
 
116
91
  const space = (n) => {
117
- console.log(`==n==${n}`);
118
92
  return ('0' + (n)).slice(-2);
119
93
  };
120
94
 
@@ -123,12 +97,11 @@
123
97
  result += space(day) + '/';
124
98
  result += space(hour) + '/';
125
99
  return result;
100
+ }
101
+
126
- } // createKeyName
102
+ // Decoderの初期化
127
-
128
- // ebml「on」のインポート
129
103
  let chunks = [];
130
- let decoder = function () {}; // 下記に修正
104
+ let decoder = function () {};
131
- // let decoder = ebml();
132
105
  function decoderOn() {
133
106
  decoder.on = function (data, chunk) {
134
107
  if(chunk[1].name == 'SimpleBlock'){
@@ -143,25 +116,21 @@
143
116
  return chunk;
144
117
  };
145
118
  }
146
-
147
- // export default decoderOn;
119
+
148
120
  decoderOn();
149
-
150
- console.log(`==decoder==${decoder}`);
151
121
 
152
122
  // 録音データの取得・wavデータへの変換
153
123
  async function getMedia(streamName, fragmentNumber) {
154
- // Endpointの取得
155
124
  let kvInput = {
156
125
  APIName: "GET_MEDIA",
157
126
  StreamName: streamName
158
127
  };
128
+
159
-
129
+ // Endpointの取得
160
130
  const kvClient = new KinesisVideoClient({ region : region });
161
131
  const kvCommand = new GetDataEndpointCommand(kvInput);
162
132
  const end = await kvClient.send(kvCommand);
163
133
 
164
- // RAWデータの取得
165
134
  let kvmInput = {
166
135
  StartSelector: {
167
136
  StartSelectorType: "FRAGMENT_NUMBER",
@@ -169,31 +138,14 @@
169
138
  },
170
139
  StreamName: streamName
171
140
  };
141
+
172
-
142
+ // RAWデータの取得
173
143
  const kvmClient = new KinesisVideoMediaClient({ endpoint: end.DataEndpoint, region : region });
174
144
  const kvmCommand = new GetMediaCommand(kvmInput);
175
145
  const data = await kvmClient.send(kvmCommand);
176
146
 
177
- console.log('==chunks==');
178
- console.log(chunks);
179
-
180
- // ebml「write」へのインポート
147
+ // 取得したRAWデータをWAV形式に変換
181
- function decoderWrite() {
182
- decoder.write = function () {
183
- decoder.write(data["Payload"]);
184
- return data;
185
- };
186
- }
187
-
188
- // export default decoderWrite();
189
- decoderWrite();
190
-
191
-
192
- console.log('==chunks2==');
193
- console.log(chunks);
148
+ const margin = 4;
194
-
195
- // chunksの結合
196
- const margin = 4; // 各chunkの先頭4バイトを破棄する
197
149
  var sumLength = 0;
198
150
  chunks.forEach( chunk => {
199
151
  sumLength += chunk.byteLength - margin;
@@ -209,13 +161,9 @@
209
161
  pos += chunk.byteLength - margin;
210
162
 
211
163
  });
212
- console.log('==sample==');
213
- console.log(sample);
214
164
  return sample.buffer;
215
- } // async function getMedia
165
+ }
216
-
217
-
218
-
166
+
219
167
  class Converter {
220
168
  // WAVファイルの生成
221
169
  static createWav(samples, sampleRate) {
@@ -247,6 +195,6 @@
247
195
  view.setUint8(offset + i, string.charCodeAt(i));
248
196
  }
249
197
  }
250
- } // class Converter
198
+ }
251
-
252
-
199
+
200
+
AWS LambdaNode.js

2

コード修正

2024/04/04 07:39

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -4,8 +4,17 @@
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
6
  ```
7
+ // import { ebml } from './node/nodejs';
8
+ const ebml = import('ebml');
9
+ console.log(`===ebml===：${ebml}`);
10
+ console.log('process.env.NODE_PATH==');
11
+ console.log(process.env.NODE_PATH);
12
+
13
+ // 「test-voice-message-infomation」でS3に保存されたデータ（発信者番号、ストリーム名、フラグメント番号など）をもとに、
14
+ // Amazon Kinesis Video Streamsから、RAWファイルをWAVファイルに変換し、S3に保存する。
15
+
7
16
  const region = 'ap-northeast-1';
8
- const putKey = 'wav/';
17
+ const putKey = 'voice-message/wav/';
9
18
  const bucketName = 'my-baseXXXXXXXXX';
10
19
 
11
20
  // S3インポート
@@ -15,11 +24,14 @@
15
24
  // Amazon Kinesis Video mediaインポート
16
25
  import { KinesisVideoMediaClient, GetMediaCommand } from "@aws-sdk/client-kinesis-video-media";
17
26
  const kvmClient = new KinesisVideoMediaClient({ region : region });
27
+ // ebmlのインポート ★importの書き方がよくわからない★
18
- import ebml from 'ebml';
28
+ // const ebml = import('ebml');
19
- console.log(`===ebml===：${ebml}`);
29
+
20
30
 
21
31
  export const handler = async (event) => {
22
32
 
33
+ console.log('==process.env.NODE_PATH==')
34
+ console.log(process.env.NODE_PATH)
23
35
  console.log(JSON.stringify(event));
24
36
 
25
37
  const region = 'ap-northeast-1';
@@ -112,12 +124,11 @@
112
124
  result += space(hour) + '/';
113
125
  return result;
114
126
  } // createKeyName
115
-
116
-
117
127
 
118
128
  // ebml「on」のインポート
119
129
  let chunks = [];
120
- let decoder = function () {};
130
+ let decoder = function () {}; // 下記に修正
131
+ // let decoder = ebml();
121
132
  function decoderOn() {
122
133
  decoder.on = function (data, chunk) {
123
134
  if(chunk[1].name == 'SimpleBlock'){
@@ -226,7 +237,7 @@
226
237
  let offset = 44;
227
238
  const srcView = new DataView(samples);
228
239
  for (var i = 0; i < len; i+=4, offset+=4) {
229
- view.setInt32(offset, srcView.getUint32(i));
240
+ view.setInt32(offset, srcView.getUint32(i), true);
230
241
  }
231
242
  return view;
232
243
  }
@@ -238,6 +249,4 @@
238
249
  }
239
250
  } // class Converter
240
251
 
241
- ```
252
+
242
-
243
-
AWS LambdaNode.js

1

コードの修正

2024/03/29 05:22

投稿

akira777
akira777

スコア8

test CHANGED
File without changes
test CHANGED
@@ -3,7 +3,7 @@
3
3
  参考サイト：https://qiita.com/echolimitless/items/af068e147e233c51d6a4
4
4
 
5
5
  -------------------------Node.js 18.xコード---------------------------------------------------
6
-
6
+ ```
7
7
  const region = 'ap-northeast-1';
8
8
  const putKey = 'wav/';
9
9
  const bucketName = 'my-baseXXXXXXXXX';
@@ -238,4 +238,6 @@
238
238
  }
239
239
  } // class Converter
240
240
 
241
-
241
+ ```
242
+
243
+
AWS LambdaNode.js