AWSLambdaException and InvalidSignatureException when running from Spring Boot

Question

I have a super simple mvn project which is running some code to get the tags of a Lambda function given the arn.

public static void listTag(String lambdaArn) {
        final AWSLambdaAsync lambdaClient = AWSLambdaAsyncClientBuilder.standard()
             .withRegion(Regions.EU_WEST_1)
             .build();
        final ListTagsRequest listTagsRequest = new ListTagsRequest();
        listTagsRequest.setResource(lambdaArn);
        final ListTagsResult listTagsResult = lambdaClient.listTags(listTagsRequest);
        final Map<String, String> tags = listTagsResult.getTags();
        ...
}

The code is working perfectly and I am able to get the tags. If I call exactly the same code from a method inside a @RestController class in a Spring Boot application, it's not working anymore and I keep getting the following:

2019-05-23 10:16:51.075 ERROR 26045 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is com.amazonaws.services.lambda.model.AWSLambdaException: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. (Service: AWSLambda; Status Code: 403; Error Code: InvalidSignatureException; Request ID: 7fb1ecf0-7d3b-11e9-89c2-8775f15f937d)] with root cause

com.amazonaws.services.lambda.model.AWSLambdaException: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. (Service: AWSLambda; Status Code: 403; Error Code: InvalidSignatureException; Request ID: 7fb1ecf0-7d3b-11e9-89c2-8775f15f937d)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1712) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1367) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1113) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:770) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:744) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:726) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:686) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:668) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:532) ~[aws-java-sdk-core-1.11.534.jar:na]
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:512) ~[aws-java-sdk-core-1.11.534.jar:na]

I have tried of course to add my credentials when building the client, adding

.withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials("accessKey", "secretKey")))

Both version of the library and Java are the same. Spring boot is version 2.1.3.RELEASE if this may help.

hir0ku · Accepted Answer · 2019-07-12 10:35:02Z

3

I have same problem. I solved directly add httpclient in pom.xml of my project.

<dependency>
   <groupId>org.apache.httpcomponents</groupId>
   <artifactId>httpclient</artifactId>
   <version>4.5.5</version>
</dependency>

Spring boot has dependency another version this library. You need to add the module version required by aws-java-sdk-core library to pom.xml.

answered Jul 12, 2019 at 10:35

hir0ku

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1 Comment

Abhinay Over a year ago

Thanks a lot, this helped me after struggling for 2 days.

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