treq

treq is a library to automatically trace requires/imports in your serverless applications and gives you insights about the most expensive modules in terms of coldstart overhead.

START RequestId: 7419d6fb-7dcb-4c53-a689-0d1d352328bc Version: $LATEST
2022-03-28T20:28:47.740Z	undefined	INFO	|-- require('/var/task/index.js') took 630.785845 ms
2022-03-28T20:28:47.740Z	undefined	INFO	..|-- require('@aws-sdk/client-dynamodb') took 282.050937 ms
2022-03-28T20:28:47.740Z	undefined	INFO	....|-- require('./DynamoDB') took 262.586494 ms
2022-03-28T20:28:47.740Z	undefined	INFO	......|-- require('./commands/BatchExecuteStatementCommand') took 54.849051 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('@aws-sdk/smithy-client') took 10.210297 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('../protocols/Aws_json1_0') took 25.35611 ms
2022-03-28T20:28:47.740Z	undefined	INFO	..........|-- require('uuid') took 11.320902 ms
2022-03-28T20:28:47.740Z	undefined	INFO	......|-- require('./DynamoDBClient') took 187.273312 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('@aws-sdk/config-resolver') took 12.8885 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('@aws-sdk/middleware-endpoint-discovery') took 12.118507 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('@aws-sdk/middleware-retry') took 13.529461 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('@aws-sdk/middleware-signing') took 17.70112 ms
2022-03-28T20:28:47.740Z	undefined	INFO	..........|-- require('./configurations') took 14.718523 ms
2022-03-28T20:28:47.740Z	undefined	INFO	............|-- require('@aws-sdk/signature-v4') took 11.853916 ms
2022-03-28T20:28:47.740Z	undefined	INFO	..............|-- require('./SignatureV4') took 10.149309 ms
2022-03-28T20:28:47.740Z	undefined	INFO	........|-- require('./runtimeConfig') took 123.567573 ms
2022-03-28T20:28:47.740Z	undefined	INFO	..........|-- require('@aws-sdk/client-sts') took 120.895623 ms
2022-03-28T20:28:47.740Z	undefined	INFO	............|-- require('./STS') took 116.251668 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..............|-- require('./commands/AssumeRoleCommand') took 22.53696 ms
2022-03-28T20:28:47.741Z	undefined	INFO	................|-- require('../protocols/Aws_query') took 20.750245 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..................|-- require('entities') took 14.045998 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..............|-- require('./STSClient') took 89.669653 ms
2022-03-28T20:28:47.741Z	undefined	INFO	................|-- require('./runtimeConfig') took 87.875766 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..................|-- require('@aws-sdk/credential-provider-node') took 84.898272 ms
2022-03-28T20:28:47.741Z	undefined	INFO	....................|-- require('./defaultProvider') took 83.672074 ms
2022-03-28T20:28:47.741Z	undefined	INFO	......................|-- require('@aws-sdk/credential-provider-ini') took 76.227651 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........................|-- require('./fromIni') took 75.707995 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..........................|-- require('./resolveProfileData') took 70.243135 ms
2022-03-28T20:28:47.741Z	undefined	INFO	............................|-- require('./resolveAssumeRoleCredentials') took 12.684291 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..............................|-- require('./resolveCredentialSource') took 12.257091 ms
2022-03-28T20:28:47.741Z	undefined	INFO	................................|-- require('@aws-sdk/credential-provider-imds') took 11.887286 ms
2022-03-28T20:28:47.741Z	undefined	INFO	............................|-- require('./resolveSsoCredentials') took 54.422646 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..............................|-- require('@aws-sdk/credential-provider-sso') took 53.719582 ms
2022-03-28T20:28:47.741Z	undefined	INFO	................................|-- require('./fromSSO') took 52.288542 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..................................|-- require('./resolveSSOCredentials') took 50.657345 ms
2022-03-28T20:28:47.741Z	undefined	INFO	....................................|-- require('@aws-sdk/client-sso') took 50.277645 ms
2022-03-28T20:28:47.741Z	undefined	INFO	......................................|-- require('./SSO') took 43.303073 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........................................|-- require('./SSOClient') took 35.038433 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..........................................|-- require('./runtimeConfig') took 34.253186 ms
2022-03-28T20:28:47.741Z	undefined	INFO	............................................|-- require('@aws-sdk/node-http-handler') took 14.914675 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..|-- require('@aws-sdk/client-s3') took 138.489329 ms
2022-03-28T20:28:47.741Z	undefined	INFO	....|-- require('./S3') took 123.365087 ms
2022-03-28T20:28:47.741Z	undefined	INFO	......|-- require('./commands/AbortMultipartUploadCommand') took 44.071934 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........|-- require('../models/models_0') took 10.537944 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........|-- require('../protocols/Aws_restXml') took 27.656476 ms
2022-03-28T20:28:47.741Z	undefined	INFO	......|-- require('./commands/DeleteObjectsCommand') took 15.740644 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........|-- require('@aws-sdk/middleware-flexible-checksums') took 15.35287 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..........|-- require('./flexibleChecksumsMiddleware') took 13.63264 ms
2022-03-28T20:28:47.741Z	undefined	INFO	............|-- require('./selectChecksumAlgorithmFunction') took 10.345904 ms
2022-03-28T20:28:47.741Z	undefined	INFO	......|-- require('./S3Client') took 18.328771 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........|-- require('./runtimeConfig') took 12.748143 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..|-- require('@aws-sdk/client-sqs') took 24.766564 ms
2022-03-28T20:28:47.741Z	undefined	INFO	....|-- require('./SQS') took 19.305477 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..|-- require('@aws-sdk/client-ssm') took 185.064697 ms
2022-03-28T20:28:47.741Z	undefined	INFO	....|-- require('./SSM') took 135.679327 ms
2022-03-28T20:28:47.741Z	undefined	INFO	......|-- require('./commands/AddTagsToResourceCommand') took 62.956037 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........|-- require('../models/models_0') took 17.333932 ms
2022-03-28T20:28:47.741Z	undefined	INFO	........|-- require('../protocols/Aws_json1_1') took 44.988784 ms
2022-03-28T20:28:47.741Z	undefined	INFO	..........|-- require('../models/models_1') took 11.553608 ms
2022-03-28T20:28:47.742Z	undefined	INFO	....|-- require('./commands') took 19.612849 ms
2022-03-28T20:28:47.742Z	undefined	INFO	......|-- require('./ListDocumentsCommand') took 13.616722 ms
2022-03-28T20:28:47.742Z	undefined	INFO	....|-- require('./pagination') took 19.10802 ms
END RequestId: 7419d6fb-7dcb-4c53-a689-0d1d352328bc
REPORT RequestId: 7419d6fb-7dcb-4c53-a689-0d1d352328bc	Duration: 2.86 ms	Billed Duration: 3 ms	Memory Size: 2048 MB	Max Memory Used: 95 MB	Init Duration: 798.59 ms	
XRAY TraceId: 1-62421a7e-0920949e7de8b8455b00f7c4	SegmentId: 05b5512a6f0e008a	Sampled: true	

Installation

You can add treq package into your AWS Lambda function either by NPM package or by AWS Lambda layer as shown below:

By NPM package

To install the middleware, you can use NPM:

npm install --save treq

By AWS Lambda Layer

You can also add treq as layer into your AWS Lambda function.

arn:aws:lambda:${region}:273094347961:layer:treq:2

Note: In the ARN above, you need to replace ${region} with the actual AWS region you deployed your AWS Lambda function.

Usage

• Configure treq to be required/bootstrapped automatically at startup by setting NODE_OPTIONS environment variable:

NODE_OPTIONS=-r treq

• Optionally, you can configure require duration threshold (in milliseconds) for tracing. Requires/imports take lower than the threshold are ignored from tracing. By default, the threshold is 10 milliseconds and it can be configured by TREQ_DURATION_THRESHOLD environment variable. For example:

TREQ_DURATION_THRESHOLD=20

• Optionally, you can configure maximum depth/level limit to trace nested requires/imports. Nested requires/imports deeper than the maximum depth/level limit are ignored from tracing. By default, the max depth is 100 and it can be configured by TREQ_MAX_DEPTH environment variable. For example:

TREQ_MAX_DEPTH=3

• Optionally, you can disable treq by setting TREQ_DISABLE environment variable to true. For example:

TREQ_DISABLE=true

Contributing

Everyone is very welcome to contribute to this repository. Feel free to raise issues or to submit Pull Requests.

License

Licensed under MIT License.