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docs(upgrade_guide): update upgrade guide with Pydantic information #5316

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Merged
merged 3 commits into from
Oct 7, 2024
Merged

docs(upgrade_guide): update upgrade guide with Pydantic information #5316

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c711d9a
Updating uograde guide
leandrodamascena Oct 5, 2024
3968cf0
Addressing Andrea's feedback
leandrodamascena Oct 7, 2024
c947af2
Merge branch 'develop' into docs/add-upgrade-guide-parser
leandrodamascena Oct 7, 2024
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13 changes: 13 additions & 0 deletions docs/upgrade.md
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Expand Up @@ -17,6 +17,7 @@ We've made minimal breaking changes to make your transition to v3 as smooth as p
| ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------ | -------------------- |
| **Pydantic** | We have removed support for [Pydantic v1](#drop-support-for-pydantic-v1) | No |
| **Parser** | We have replaced [DynamoDBStreamModel](#dynamodbstreammodel-in-parser) `AttributeValue` with native Python types | Yes |
| **Parser** | We no longer export [Pydantic objects](#importing-pydantic-objects) from `parser.pydantic`. | Yes |
| **Lambda layer** | [Lambda layers](#new-aws-lambda-layer-arns) are now compiled according to the specific Python version and architecture | No |
| **Event Handler** | We [have deprecated](#event-handler-headers-are-case-insensitive) the `get_header_value` function. | Yes |
| **Batch Processor** | `@batch_processor` and `@async_batch_processor` decorators [are now deprecated](#deprecated-batch-processing-decorators) | Yes |
Expand Down Expand Up @@ -91,6 +92,18 @@ def lambda_handler(event: DynamoDBStreamModel, context: LambdaContext):

```

## Importing Pydantic objects

We have stopped exporting Pydantic objects directly from `aws_lambda_powertools.utilities.parser.pydantic`. This change prevents customers from accidentally importing all of Pydantic, which could significantly slow down function startup times.

```diff
- #BEFORE - v2
- from aws_lambda_powertools.utilities.parser.pydantic import EmailStr

+ # NOW - v3
+ from pydantic import EmailStr
```

## New AWS Lambda Layer ARNs

!!! note "No code changes required"
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