New AWS Serverless Project wizard fails when SDK has not yet been installed

[NetForce1]

The wizard 'New AWS Serverless Project' only works after a AWS Java Project has been created. The cause seems to be a missing SDK.

Error from Eclipse Error Log:

FreeMarker template error:
The following has evaluated to null or missing:
==> awsJavaSdkVersion  [in template "serverless/article/pom.xml.ftl" at line 44, column 20]

----
Tip: If the failing expression is known to be legally refer to something that's null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----

----
FTL stack trace ("~" means nesting-related):
	- Failed at: ${awsJavaSdkVersion}  [in template "serverless/article/pom.xml.ftl" at line 44, column 18]
----

Java stack trace (for programmers):
----
freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...]
	at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:108)
	at freemarker.core.EvalUtil.coerceModelToString(EvalUtil.java:346)
	at freemarker.core.Expression.evalAndCoerceToString(Expression.java:80)
	at freemarker.core.DollarVariable.accept(DollarVariable.java:40)
	at freemarker.core.Environment.visit(Environment.java:257)
	at freemarker.core.MixedContent.accept(MixedContent.java:57)
	at freemarker.core.Environment.visit(Environment.java:257)
	at freemarker.core.Environment.process(Environment.java:235)
	at freemarker.template.Template.process(Template.java:262)
	at com.amazonaws.eclipse.lambda.project.template.CodeTemplateManager.processTemplateWithData(CodeTemplateManager.java:89)
	at com.amazonaws.eclipse.lambda.project.wizard.util.FunctionProjectUtil.emitServerlessPom(FunctionProjectUtil.java:222)
	at com.amazonaws.eclipse.lambda.project.wizard.util.FunctionProjectUtil.createServerlessBlueprintProject(FunctionProjectUtil.java:94)
	at com.amazonaws.eclipse.lambda.project.wizard.NewServerlessProjectWizard.doFinish(NewServerlessProjectWizard.java:107)
	at com.amazonaws.eclipse.core.plugin.AbstractAwsProjectWizard$1$1.execute(AbstractAwsProjectWizard.java:63)
	at org.eclipse.ui.actions.WorkspaceModifyOperation.lambda$0(WorkspaceModifyOperation.java:107)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2267)
	at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:128)
	at com.amazonaws.eclipse.core.plugin.AbstractAwsProjectWizard$1.run(AbstractAwsProjectWizard.java:70)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)

[zhangzhx]

Thanks for reporting this to us. From the error message, it seems Eclipse cannot get a valid Java SDK version which failed the freemarker to replace the awsJavaSdkVersion variable.

I will submit a fix to this to ensure a non-null value for the awsJavaSdkVersion. I will let you know once it's released.

[NetForce1]

+1

Maybe it helps to know that the wizard works after an AWS Java Project is created. Running that wizard causes the SDK to be downloaded.

[zhangzhx]

This fix has been included in the release. In this fix, the SDK version will fall back to a default value if it cannot be acquired from Maven Central. Let me know if you have more questions.