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GH-805 Fix web context initialization during snapstart #814

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Apr 4, 2024
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2 changes: 1 addition & 1 deletion aws-serverless-java-container-springboot3/pom.xml
Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-function-serverless-web</artifactId>
<version>4.0.6</version>
<version>4.1.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.amazonaws.serverless</groupId>
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,10 @@ public SpringDelegatingLambdaContainerHandler() {
public SpringDelegatingLambdaContainerHandler(Class<?>... startupClasses) {
this.startupClasses = startupClasses;
this.mvc = ServerlessMVC.INSTANCE(this.startupClasses);
if (System.getenv().containsKey("AWS_LAMBDA_INITIALIZATION_TYPE")
&& System.getenv().get("AWS_LAMBDA_INITIALIZATION_TYPE").equals("snap-start")) {
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shouldn't that be !"on-demand" to cover "provisioned-concurrency" as well?

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Perhaps, although I am not quite sure what 'on-demand' is

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Also, you can change s-c-function version from snapshot to 4.1.1 as we just had a release

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See: https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html#configuration-envvars-runtime

AWS_LAMBDA_INITIALIZATION_TYPE – The initialization type of the function, which is on-demand, provisioned-concurrency, or snap-start.

For provisioned-concurrency it would also make sense to initialize the context earlier - therefore !("on-demand") would cover this as well.

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ahha, got it. will add

mvc.waitForContext();
}
this.mapper = new ObjectMapper();
this.responseWriter = new AwsProxyHttpServletResponseWriter();
}
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