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GH-861 Add constant for aws-context

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Resolves #861
This commit is contained in:
Oleg Zhurakousky
2022-04-21 13:16:02 +02:00
parent 5e1b8d3912
commit 047c0b1e6d
2 changed files with 10 additions and 1 deletions
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7
docs/src/main/asciidoc/adapters/aws.adoc
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@@ -37,6 +37,13 @@ public class FuncApplication implements ApplicationContextInitializer<GenericApp
} }
``` ```
== AWS Context
In a typical implementation of AWS Handler user has access to AWS _context_ object. With function approach you can have the same experience if you need it.
Upon each invocation the framework will add `aws-context` message header containing the AWS _context_ instance for that particular invocation. So if you need to access it
you can simply have `Message<YourPojo>` as an input parameter to your function and then access `aws-context` from message headers.
For convenience we provide AWSLambdaUtils.AWS_CONTEXT constant.
== Platform Specific Features == Platform Specific Features
=== HTTP and API Gateway === HTTP and API Gateway

4
spring-cloud-function-adapters/spring-cloud-function-adapter-aws/src/main/java/org/springframework/cloud/function/adapter/aws/AWSLambdaUtils.java
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@@ -51,6 +51,8 @@ final class AWSLambdaUtils {
static final String AWS_API_GATEWAY = "aws-api-gateway"; static final String AWS_API_GATEWAY = "aws-api-gateway";
public static final String AWS_CONTEXT = "aws-context";
private AWSLambdaUtils() { private AWSLambdaUtils() {
} }
@@ -136,7 +138,7 @@ final class AWSLambdaUtils {
messageBuilder = MessageBuilder.withPayload(payload); messageBuilder = MessageBuilder.withPayload(payload);
} }
if (awsContext != null) { if (awsContext != null) {
messageBuilder.setHeader("aws-context", awsContext); messageBuilder.setHeader(AWS_CONTEXT, awsContext);
} }
logger.info("Incoming request headers: " + headers); logger.info("Incoming request headers: " + headers);