4.1.2 Broken input logging

[franczakr]

Describe the bug
After switching from 4.1.1 to 4.1.2 AWSLambdaUtils divides input JSON into multiple log entries preventing AWS Cloudwatch from formatting it properly and causing a huge amount of logs.
In 4.1.1 it logged the entire input in a single log entry and AWS CloudWatch formatted and colored it, while now we get one JSON line per log entry.

spring-cloud-function/spring-cloud-function-adapters/spring-cloud-function-adapter-aws/src/main/java/org/springframework/cloud/function/adapter/aws/AWSLambdaUtils.java

Line 116 in f0ae10f

logger.info("Received: " + mask(new String(payload, StandardCharsets.UTF_8)));

It's probably caused by SerializationFeature.INDENT_OUTPUT in the new JsonMasker class.

spring-cloud-function/spring-cloud-function-context/src/main/java/org/springframework/cloud/function/utils/JsonMasker.java

Line 56 in f0ae10f

this.mapper = new JacksonMapper(new ObjectMapper().enable(SerializationFeature.INDENT_OUTPUT));

Can you remove this feature / give an option to disable it or/and at least skip processing by JsonMasker when keysToMask is empty?

Sample
Any AWS Lambda application that accepts JSON input

[olegz]

Sorry about that, it was done primarily to test and visualize but i see your point