/
ValidateUriScheme.java
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/
ValidateUriScheme.java
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package software.amazon.awssdk.services.rules;
import java.util.List;
import java.util.Map;
import java.util.stream.Stream;
import software.amazon.awssdk.services.restjsonendpointproviders.endpoints.internal.EndpointResult;
import software.amazon.awssdk.services.restjsonendpointproviders.endpoints.internal.Identifier;
import software.amazon.awssdk.services.restjsonendpointproviders.endpoints.internal.Literal;
import software.amazon.awssdk.services.restjsonendpointproviders.endpoints.internal.Template;
/**
* Validate that URIs start with a scheme
*/
public class ValidateUriScheme extends TraversingVisitor<ValidationError> {
boolean checkingEndpoint = false;
@Override
public Stream<ValidationError> visitEndpoint(EndpointResult endpoint) {
checkingEndpoint = true;
Stream<ValidationError> errors = endpoint.getUrl().accept(this);
checkingEndpoint = false;
return errors;
}
@Override
public Stream<ValidationError> visitLiteral(Literal literal) {
return literal.accept(new Literal.Visitor<Stream<ValidationError>>() {
@Override
public Stream<ValidationError> visitBool(boolean b) {
return Stream.empty();
}
@Override
public Stream<ValidationError> visitStr(Template value) {
return validateTemplate(value);
}
@Override
public Stream<ValidationError> visitObject(Map<Identifier, Literal> members) {
return Stream.empty();
}
@Override
public Stream<ValidationError> visitTuple(List<Literal> members) {
return Stream.empty();
}
@Override
public Stream<ValidationError> visitInt(int value) {
return Stream.empty();
}
});
}
private Stream<ValidationError> validateTemplate(Template template) {
if (checkingEndpoint) {
Template.Part head = template.getParts().get(0);
if (head instanceof Template.Literal) {
String templateStart = ((Template.Literal) head).getValue();
if (!(templateStart.startsWith("http://") || templateStart.startsWith("https://"))) {
return Stream.of(new ValidationError(
ValidationErrorType.INVALID_URI,
"URI should start with `http://` or `https://` but the URI started with " + templateStart)
);
}
}
/* Allow dynamic URIs for now—we should lint that at looks like a scheme at some point */
}
return Stream.empty();
}
}