{"id":9889,"date":"2023-03-13T22:28:46","date_gmt":"2023-03-13T14:28:46","guid":{"rendered":"http:\/\/123.57.164.21\/?p=9889"},"modified":"2023-04-12T08:10:34","modified_gmt":"2023-04-12T00:10:34","slug":"lambda-layer-tips","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=9889","title":{"rendered":"Lambda Layer Tips"},"content":{"rendered":"\n

1.\u5229\u7528 esbuild \u7f16\u8bd1 typeScript \u5230javascript(\u6709\u4f9d\u8d56)<\/strong><\/p>\n\n\n\n

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\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528typeScript\u6765\u5f00\u53d1Lambda\u51fd\u6570\u3002\u4f46\u662flambda\u672c\u8eab\u8fd0\u884c\u4e0d\u4e86typeScript\uff0c\u9700\u8981\u6211\u4eec\u901a\u8fc7esbulid\uff0c\u5148build\u6210Javascript\uff0c\u6211\u4eec\u4e0b\u9762\u7684\u4f8b\u5b50\u4f1a\u628a\u4f9d\u8d56\u7684\u4ee3\u7801\uff0c\u90fd\u6253\u5165\u5230javascript<\/strong>\u4e2d\u3002<\/p>\n\n\n\n

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\u4e0b\u9762\u662ftypeScript\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n

lambda.ts<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

package.json<\/p>\n\n\n\n

{\n  \"name\": \"aws-lambda-layer\",\n  \"version\": \"1.0.0\",\n  \"description\": \"aws lambda layer demo\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"esbuild lambda.ts --bundle --minify --sourcemap --platform=node --target=es2020 --format=esm --outfile=dist\/index.mjs\",\n    \"postbuild\": \"cd dist && zip -r index.zip index.mjs*\"\n  },\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"@types\/aws-lambda\": \"^8.10.109\",\n    \"esbuild\": \"^0.15.16\",\n    \"lambda-local\": \"^2.0.3\",\n    \"aws-sdk\": \"^2.1279.0\",\n    \"class-transformer\": \"^0.5.1\",\n    \"mongodb\": \"^4.12.1\",\n    \"axios\": \"^1.2.0\"\n  }\n\n}<\/pre>\n\n\n\n
\u6ce8\u610f “scripts” \u91cc\u9762\u7684\u53c2\u6570<\/p>\n\n\n\n
–bundle\uff1a\u4f1a\u628a dependencies\u76f8\u5173\u7684\u4f9d\u8d56\u5305\u90fd\u6253\u8fdbbuild\u597d\u7684javascript\u91cc\u9762\u3002<\/p>\n\n\n\n
\u5728 esbuild \u4e2d\uff0cbundle<\/code> \u662f\u4e00\u4e2a\u6784\u5efa\u9009\u9879\uff0c\u7528\u4e8e\u6307\u793a esbuild \u6253\u5305\u6240\u6709\u4ee3\u7801\u5e76\u8f93\u51fa\u4e00\u4e2a\u6346\u7ed1\u540e\u7684\u6587\u4ef6\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u5b83\u5c06\u7f16\u8bd1\u5668\u7684\u5de5\u4f5c\u548c\u6a21\u5757\u52a0\u8f7d\u5668\u7684\u5de5\u4f5c\u7ed3\u5408\u8d77\u6765\uff0c\u4f7f\u5f97\u5728\u6d4f\u89c8\u5668\u6216 Node.js \u4e2d\u76f4\u63a5\u52a0\u8f7d\u751f\u6210\u7684\u6587\u4ef6\u65f6\uff0c\u53ef\u4ee5\u65e0\u9700\u518d\u53bb\u52a0\u8f7d\u5176\u4ed6\u6a21\u5757\u6216\u811a\u672c\u6587\u4ef6\uff0c\u8fd9\u4e2a\u6253\u5305\u540e\u7684 bundle.js<\/code> \u6587\u4ef6\u5305\u542b\u4e86\u6240\u6709\u76f8\u5173\u7684\u4ee3\u7801\u3002<\/p>\n\n\n\n
–sourcemap\uff1a\u4f1a\u751f\u6210map\u6620\u5c04\u6587\u4ef6<\/p>\n\n\n\n
\u5728\u7ec8\u7aef\u6267\u884c\uff1anpm run build<\/p>\n\n\n\n
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\u53ef\u4ee5\u770b\u5230\u5728dist\u76ee\u5f55\u4e0b\uff0c\u751f\u6210\u4e86mjs \u548c map \u4ee5\u53cazip\u5305\u3002\u53ef\u4ee5\u770b\u5230mjs size\u67099.2MB\uff0c\u8fd9\u662f\u56e0\u4e3a\u628a\u4f9d\u8d56\u5305\u90fd\u6253\u8fdb\u53bb\u4e86\u3002<\/p>\n\n\n\n
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\u53e6\u5916 –minify \u8fd9\u4e2a\u53c2\u6570\u4f1a\u538b\u7f29\u4ee3\u7801\uff0c\u628a\u4ee3\u7801\u53d8\u6210\u4e00\u884c\u3002<\/p>\n\n\n\n
\u53bb\u6389 –minify \u53c2\u6570\u4ee5\u540e\u7684build\u51fa\u7684 index.mjs<\/p>\n\n\n\n
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\u6709 –minify \u53c2\u6570 build\u51fa\u7684 index.mjs<\/p>\n\n\n\n
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\u91cd\u8981<\/strong><\/p>\n\n\n\n
\u52a0\u4e86 –bundle\u53c2\u6570\u4ee5\u540e\uff0clambda\u6267\u884c\u603b\u4f1a\u51fa\u8fd9\u4e2a\u9519\u8bef\u3002<\/p>\n\n\n\n
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lambda\u6267\u884c\u7ed3\u679c<\/figcaption><\/figure><\/div>\n\n\n\n
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build\u51fa\u7684index.mjs\u6587\u4ef6<\/figcaption><\/figure><\/div>\n\n\n\n
\u52a0\u4e0a –format=esm<\/span><\/strong> \u80fd\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4e0d\u77e5\u9053\u539f\u56e0<\/p>\n\n\n\n
esbuild src\/service\/test.ts --bundle --external:axios --external:aws-sdk --external:mongodb --external:class-transformer --external:@aws-sdk\/client-secrets-manager --external:zip --platform=node --target=es2020 --format=esm --outfile=dist\/index.mjs\",\n<\/pre>\n\n\n\n
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esbuild src\/service\/test.ts --bundle --external:axios --external:aws-sdk --external:mongodb --external:class-transformer --external:@aws-sdk\/client-secrets-manager --external:zip --platform=node --target=es2020 --format=esm --outfile=dist\/index.mjs<\/pre>\n\n\n\n
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2.\u5229\u7528 esbuild \u7f16\u8bd1 typeScript \u5230javascript(\u65e0\u4f9d\u8d56)<\/strong><\/p>\n\n\n\n
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\u65b9\u6cd5\u4e00\uff1a\u53bb\u6389–bundle <\/strong><\/p>\n\n\n\n
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\u53ef\u4ee5\u4fee\u6539\u4e0bpackage.json\u7684build\u7684\u547d\u4ee4<\/p>\n\n\n\n
\u4fee\u6539\u540e\u7684package.json<\/p>\n\n\n\n
build \u91cc\u9762 \u53bb\u6389\u4e86 –bundle \u548c –sourcemap<\/p>\n\n\n\n
{\n  \"name\": \"aws-lambda-layer\",\n  \"version\": \"1.0.0\",\n  \"description\": \"aws lambda layer demo\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"esbuild lambda.ts --minify --platform=node --target=es2020  --format=esm --outfile=dist\/index.mjs\",\n    \"postbuild\": \"cd dist && zip -r index.zip index.mjs*\"\n  },\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"@types\/aws-lambda\": \"^8.10.109\",\n    \"esbuild\": \"^0.15.16\",\n    \"lambda-local\": \"^2.0.3\",\n    \"aws-sdk\": \"^2.1279.0\",\n    \"class-transformer\": \"^0.5.1\",\n    \"mongodb\": \"^4.12.1\",\n    \"axios\": \"^1.2.0\"\n  }\n\n}<\/pre>\n\n\n\n
\u518d\u6b21npm run build\uff0c\u53ef\u4ee5\u770b\u5230index.mjs \u53d8\u6210313kb\u4e86\u3002<\/p>\n\n\n\n
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\u4f46\u662f\u65b9\u6cd5\u4e00\u6709\u4e2a\u95ee\u9898\uff0c\u5047\u5982\u8981build\u7684ts\u6587\u4ef6\uff0c\u91cc\u9762\u5f15\u7528\u4e86\u522b\u7684moudle\uff0cCommonUtil\uff0c\u5982\u679c\u53bb\u6389\u4e86 –bundle\uff0c\u5219CommonUtil\u4e5f\u4e0d\u4f1a\u6253\u8fdb\u7f16\u8bd1\u597d\u7684index.mjs\u4ee3\u7801\u91cc\u9762\u4e86\u3002\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u4e8c\uff0c\u901a\u8fc7external<\/code>\u53c2\u6570\u5177\u4f53\u6307\u5b9a\u9664\u5916\u7684\u6a21\u5757\uff0c\u53ef\u4ee5\u7cbe\u786e\u7684\u9664\u5916\u67d0\u4e2amoudle\uff0c\u4fdd\u7559\u4e0d\u60f3\u9664\u5916\u7684moudle\u3002<\/p>\n\n\n\n
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\u65b9\u6cd5\u4e8c\uff1a<\/strong><\/p>\n\n\n\n
\u5728\u4f7f\u7528 esbuild<\/code> \u6784\u5efa Node.js \u5e94\u7528\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e external<\/code> \u9009\u9879\u6765\u544a\u8bc9 esbuild<\/code> \u54ea\u4e9b\u6a21\u5757\u662f\u5916\u90e8\u4f9d\u8d56\uff0c\u4e0d\u5e94\u8be5\u88ab\u6253\u5305\u8fdb\u6700\u7ec8\u7684\u8f93\u51fa\u6587\u4ef6\u4e2d\u3002\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c0f\u8f93\u51fa\u6587\u4ef6\u7684\u5927\u5c0f\uff0c\u5e76\u4e14\u53ef\u4ee5\u907f\u514d\u4e00\u4e9b\u4e0d\u5fc5\u8981\u7684\u91cd\u590d\u4ee3\u7801\u3002<\/p>\n\n\n\n
\u4f60\u53ef\u4ee5\u5c06\u4ee5\u4e0b\u7684 build<\/code> \u547d\u4ee4\u6dfb\u52a0\u5230\u4f60\u7684 package.json<\/code> \u6587\u4ef6\u4e2d\u7684 scripts<\/code> \u5b57\u6bb5\u4e2d\uff1a<\/p>\n\n\n\n
{\n  \"name\": \"my-app\",\n  \"version\": \"1.0.0\",\n  \"scripts\": {\n    \"build\": \"esbuild index.js --bundle --external:fs --external:path --external:moduleA --platform=node --format=esm --outfile=dist\/bundle.js\"\n  },\n  \"dependencies\": {\n    \/\/ ...\n  }\n}\n<\/pre>\n\n\n\n
\u5728\u4e0a\u9762\u7684 build<\/code> \u547d\u4ee4\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86 --external<\/code> \u9009\u9879\u6765\u5c06 fs<\/code>\u3001path<\/code> \u548c module<\/code>A \u6a21\u5757\u8bbe\u7f6e\u4e3a\u5916\u90e8\u4f9d\u8d56\u3002\u5982\u679c\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u4e86\u5176\u4ed6\u6a21\u5757\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6dfb\u52a0\u5230 --external<\/code> \u9009\u9879\u4e2d\u3002<\/p>\n\n\n\n
3.\u5236\u4f5clambda layer<\/strong><\/p>\n\n\n\n
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\u5148\u5728\u672c\u5730\u505a\u597dlayer\u5c42\u7528\u5230\u7684nodejs modules\u3002<\/p>\n\n\n\n
npm install mongodb\nnpm install aws-sdk\nnpm install axios<\/pre>\n\n\n\n
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\u628anode_modules\uff0c package.json\uff0cpackage-lock.json\u4e00\u8d77\u6253\u6210\u538b\u7f29\u5305\uff0c\u5e76\u4e14\u547d\u540d\u6210nodejs.zip<\/p>\n\n\n\n
\u901a\u8fc7lambda\u63a7\u5236\u53f0\u521b\u5efalayer\uff0c\u5e76\u4e14\u4e0a\u4f20nodejs.zip<\/p>\n\n\n\n
4.lambda\u51fd\u6570\u5f15\u7528\u8be5layer\u5c42<\/strong><\/p>\n\n\n\n
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5.\u6587\u4ef6\u5236\u4f5clayer\u5c42<\/strong><\/p>\n\n\n\n
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\u6bd4\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u5e0c\u671b\u8fde\u63a5\u628amongodb\u7528\u5230\u7684pem\u6587\u4ef6\u6253\u5230laryer\u5c42\u91cc\u9762\u3002<\/p>\n\n\n\n
pem\n  |---lib\n       |---rds-combined-ca-bundle.pem\n      <\/pre>\n\n\n\n
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\u7136\u540e\u6253\u6210pem.zip\u538b\u7f29\u5305\uff0c\u5728layer\u505a\u6210\u7684\u63a7\u5236\u53f0\u6b63\u5e38\u4e0a\u4f20zip\u6587\u4ef6\uff0c\u505a\u6210\u5c31\u53ef\u4ee5\u4e86<\/p>\n\n\n\n
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\u5728lambda\u51fd\u6570\u91cc\u9762\uff0c\u6b63\u5e38\u5f15\u7528\u8fd9\u4e2alayer\u5c42\u3002<\/p>\n\n\n\n
\u8fd9\u6837\u8fd9\u4e2a\u6587\u4ef6\u4f1a\u653e\u5728lamda\u51fd\u6570\uff0c\u4e0b\u9762\u7684\u8def\u5f84\u4e0b\u9762\u3002<\/p>\n\n\n\n
\/opt\/lib\/rds-combined-ca-bundle.pem<\/pre>\n\n\n\n
lamda\u51fd\u6570\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n
import { MongoClient } from 'mongodb';\nimport { Axios } from 'axios';\nimport AWS from 'aws-sdk';\nimport * as fs from 'fs';\n\nimport {\n    SecretsManagerClient,\n    GetSecretValueCommand,\n  } from \"@aws-sdk\/client-secrets-manager\";\n\nconst secret_name = \"secrets-docdb-01\";\n\n\/\/ This will persist DB connectionn if Lambda container still \"warm\" on invocation, see: https:\/\/docs.aws.amazon.com\/lambda\/latest\nconst cachedDb: Map<string, MongoClient> = new Map();\n\nconst client = new SecretsManagerClient({\n  region: \"ap-northeast-1\",\n});\n\nexport const handler = async (event) => {\n\n  \/\/ \u8fd9\u5757\u901a\u8fc7fs\u6253\u5370\u4e00\u4e0b\/opt\/lib\u76ee\u5f55\u4e0b\u9762\u7684\u6587\u4ef6\n  let filenames = fs.readdirSync(\"\/opt\/lib\");\n  console.log(\"\\nFilenames in directory:\");\n  filenames.forEach((file) => {\n    console.log(\"File:\", file);\n  });\n    \n    let response;\n    \/\/ \u4eceAWS Secret\u91cc\u9762\u53d6\u5f97documentdb\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\n    try {\n        response = await client.send(\n          new GetSecretValueCommand({\n            SecretId: secret_name,\n            VersionStage: \"AWSCURRENT\", \/\/ VersionStage defaults to AWSCURRENT if unspecified\n          })\n        );\n      } catch (error) {\n        throw error;\n      }\n      \n    const secret = response.SecretString;\n    const parsedResult = JSON.parse(secret);\n    console.log(parsedResult.username);\n\n    const uri= 'mongodb:\/\/'+ parsedResult.username + ':' + parsedResult.password+ '@xxxxx.ap-northeast-1.docdb.amazonaws.com:27017';\n\n    \/\/ DB\u63a5\u7d9a\u53d6\u5f97\n    let conn = await connectToDatabase(uri);\n    \/\/ Config Mongo Client'\n    console.log(\"conn\");\n    const db = conn.db('accomDocDb02'); \/\/ which DB\n    console.log(db);\n\n    const collection = db.collection('lambdatest'); \/\/ Which \"collection\"\/table     \n    \/\/ Write to DB\n    const dbWrite = await collection.insertOne({ 'lambdatestMsg': 'test' });\n\n    console.log(dbWrite);\n\n    console.log('******lambda tets start******');\n    console.log(event);\n    console.log('Axios:' + Axios.toString);\n    console.log('MongoClient:' + MongoClient.name);\n    console.log('S3:' + AWS.S3.toString);\n    console.log('******lambda test end******');\n};\n\nasync function connectToDatabase(uri) {\n\n    console.log(\"=> connect to database\");\n    if (!cachedDb.has(uri)) {\n        console.log(\"=> creating connection...\");\n        \/\/ \u6ce8\u610f\u8fd9\u91cc\u9762pem\u7684\u8bc1\u4e66\uff0c\u662f\u4ecelayer\u5c42\u8def\u5f84\u6765\u7684\n        const connection = await MongoClient.connect(uri, { ssl: true, sslCA: '\/opt\/lib\/rds-combined-ca-bundle.pem', retrywrites: false }).then(c => c);\n        cachedDb.set(uri, connection);\n        console.log(\"=> connection created...\");\n    }\n    return cachedDb.get(uri) ?? null;\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
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