|
1 | | -# Powertools for AWS Lambda Layer |
| 1 | +> [!important] |
| 2 | +> This repository will be archived on April 5, 2025 together with the `cdk-aws-lambda-powertools-layer` CDK constructs for Python and Node.js |
2 | 3 |
|
3 | | -## Why this project exists |
| 4 | +Powertools for AWS will continue to provide official Lambda Layers for [Python](https://docs.powertools.aws.dev/lambda/python/latest/) and [TypeScript](https://docs.powertools.aws.dev/lambda/typescript/latest/) in all commercial regions and GovCloud, as well as future regions as they become available. |
4 | 5 |
|
5 | | -This is a custom construct that will create AWS Lambda Layer with Powertools for AWS Lambda for Python or NodeJS library. There are different |
6 | | -ways how to create a layer and when working with CDK you need to install the library, create a zip file and wire it |
7 | | -correctly. With this construct you don't have to care about packaging and dependency management. Create a construct |
8 | | -and add it to your function. The construct is an extension of the |
9 | | -existing [`LayerVersion`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.LayerVersion.html) construct |
10 | | -from the CDK library, so you have access to all fields and methods. |
| 6 | +### Your options |
11 | 7 |
|
12 | | -> ⚠️ **This construct uses docker to build and bundle the dependencies!** |
| 8 | +**1. Use Managed Lambda layers (Recommended)** |
13 | 9 |
|
14 | | -See the [API](API.md) for details. |
| 10 | +Powertools for AWS managed Lambda layers offer: |
| 11 | + |
| 12 | +- Optimization for each runtime and architecture |
| 13 | +- Ongoing support and updates |
| 14 | +- Availability across all commercial regions and GovCloud |
| 15 | +- Simplified workflow that lets you focus on function code |
15 | 16 |
|
16 | | -```typescript |
17 | | -import {LambdaPowertoolsLayer} from 'cdk-aws-lambda-powertools-layer'; |
18 | | -import {RuntimeFamily } from "aws-cdk-lib/aws-lambda"; |
| 17 | +**2. Build Custom Lambda Layers** |
19 | 18 |
|
20 | | - const powertoolsLayerPython = new LambdaPowertoolsLayer(this, 'TestLayer', {runtimeFamily: RuntimeFamily.PYTHON}); |
21 | | - const powertoolsLayerNodeJS = new LambdaPowertoolsLayer(this, 'TestLayer', {runtimeFamily: RuntimeFamily.NODEJS}); |
22 | | -``` |
| 19 | +If you need custom layers: |
23 | 20 |
|
24 | | -Python |
| 21 | +- Use the open-source build pipeline from the main repositories |
| 22 | +- Reference our implementation for your own deployment process |
25 | 23 |
|
26 | | -```python |
27 | | -from cdk_aws_lambda_powertools_layer import LambdaPowertoolsLayer |
28 | 24 |
|
29 | | -powertoolsLayer = LambdaPowertoolsLayer(self, 'PowertoolsLayer') |
30 | | -``` |
| 25 | +### Migration tips |
31 | 26 |
|
32 | | -The layer will be created during the CDK `synth` step and thus requires Docker. |
| 27 | +- Plan your transition before the April 5, 2025 archival date |
| 28 | +- Test thoroughly with the managed layers before migrating production workloads |
| 29 | +- Review the documentation for [Python](https://docs.powertools.aws.dev/lambda/python/latest/) and [TypeScript](https://docs.powertools.aws.dev/lambda/typescript/latest/) implementations |
33 | 30 |
|
34 | | -## Install |
35 | | - |
36 | | -TypeSript/JavaScript: |
37 | | - |
38 | | -```shell |
39 | | -npm i cdk-aws-lambda-powertools-layer |
40 | | -``` |
41 | | - |
42 | | -Python: |
43 | | - |
44 | | -```shell |
45 | | -pip install cdk-aws-lambda-powertools-layer |
46 | | -``` |
47 | | - |
48 | | -## Usage |
49 | | - |
50 | | -### Python |
51 | | - |
52 | | -A single line will create a layer with Powertools for AWS Lambda (Python). For NodeJS you need to specifically set the `runtimeFamily: Runtime.NODEJS` property. |
53 | | - |
54 | | -```python |
55 | | -from cdk_aws_lambda_powertools_layer import LambdaPowertoolsLayer |
56 | | - |
57 | | -powertoolsLayer = LambdaPowertoolsLayer(self, 'PowertoolsLayer') |
58 | | -``` |
59 | | - |
60 | | -You can then add the layer to your funciton: |
61 | | - |
62 | | -```python |
63 | | -from aws_cdk import aws_lambda |
64 | | - |
65 | | -aws_lambda.Function(self, 'LambdaFunction', |
66 | | - code=aws_lambda.Code.from_asset('function'), |
67 | | - handler='app.handler', |
68 | | - layers=[powertoolsLayer]) |
69 | | -``` |
70 | | - |
71 | | -You can specify the powertools version by passing the optional `version` paramter, otherwise the construct will take the |
72 | | -latest version from pypi repository. |
73 | | - |
74 | | -```python |
75 | | -LambdaPowertoolsLayer(self, 'PowertoolsLayer', version='1.24.0') |
76 | | -``` |
77 | | - |
78 | | -Additionally, powertools have extras depenedncies such as |
79 | | -Pydantic, [documented here](https://awslabs.github.io/aws-lambda-powertools-python/latest/#lambda-layer). This is not |
80 | | -included by default, and you have to set this option in the construct definition if you need it: |
81 | | - |
82 | | -```python |
83 | | -LambdaPowertoolsLayer(self, 'PowertoolsLayer', include_extras=True) |
84 | | -``` |
85 | | - |
86 | | -Full example: |
87 | | - |
88 | | -```python |
89 | | -from aws_cdk import Stack, aws_lambda |
90 | | -from cdk_aws_lambda_powertools_layer import LambdaPowertoolsLayer |
91 | | -from constructs import Construct |
92 | | - |
93 | | - |
94 | | -class LayerTestStack(Stack): |
95 | | - |
96 | | - def __init__(self, scope: Construct, construct_id: str, **kwargs) -> None: |
97 | | - super().__init__(scope, construct_id, **kwargs) |
98 | | - |
99 | | - powertoolsLayer = LambdaPowertoolsLayer( |
100 | | - self, 'PowertoolsLayer', include_extras=True, version='1.24.0') |
101 | | - |
102 | | - aws_lambda.Function(self, 'LambdaFunction', |
103 | | - code=aws_lambda.Code.from_asset('function'), |
104 | | - handler='app.handler', |
105 | | - layers=[powertoolsLayer]) |
106 | | - |
107 | | -``` |
108 | | - |
109 | | -### TypeScript |
110 | | - |
111 | | -Full example for TypeScript: |
112 | | - |
113 | | -```typescript |
114 | | -import { Stack, StackProps } from 'aws-cdk-lib'; |
115 | | -import { Construct } from 'constructs'; |
116 | | -import { LambdaPowertoolsLayer } from 'cdk-aws-lambda-powertools-layer'; |
117 | | -import { Code, Function, Runtime } from 'aws-cdk-lib/aws-lambda'; |
118 | | -import * as path from 'path'; |
119 | | - |
120 | | -export class CdkPowertoolsExampleStack extends Stack { |
121 | | - constructor(scope: Construct, id: string, props?: StackProps) { |
122 | | - super(scope, id, props); |
123 | | - |
124 | | - const powertoolsLayer = new LambdaPowertoolsLayer(this, 'TestLayer', { |
125 | | - version: '1.22.0', |
126 | | - includeExtras: true |
127 | | - }); |
128 | | - |
129 | | - new Function(this, 'LambdaFunction', { |
130 | | - code: Code.fromAsset(path.join('./function')), |
131 | | - handler: 'app.handler', |
132 | | - layers: [powertoolsLayer], |
133 | | - }); |
134 | | - } |
135 | | -} |
136 | | - |
137 | | -``` |
| 31 | +### Connect |
138 | 32 |
|
| 33 | +If you have questions about the notice or about the migration to our managed Lambda layers, please reach out to |
| 34 | + |
| 35 | +- Powertools for AWS Lambda on Discord: #general - [Invite link](https://discord.gg/B8zZKbbyET) |
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