software.amazon.awssdk.services.polly.endpoints.internal.IsVirtualHostableS3Bucket Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of polly Show documentation

The AWS Java SDK for Amazon Polly module holds the client classes that are used for communicating with Amazon Polly.

There is a newer version: 2.29.15

/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */

package software.amazon.awssdk.services.polly.endpoints.internal;

import software.amazon.awssdk.annotations.SdkInternalApi;

@SdkInternalApi
public class IsVirtualHostableS3Bucket extends VarargFn {
    public static final String ID = "aws.isVirtualHostableS3Bucket";

    public IsVirtualHostableS3Bucket(FnNode fnNode) {
        super(fnNode);
    }

    @Override
    public  T acceptFnVisitor(FnVisitor visitor) {
        return visitor.visitIsVirtualHostLabelsS3Bucket(this);
    }

    public static IsVirtualHostableS3Bucket ofExprs(Expr expr, boolean allowDots) {
        return new IsVirtualHostableS3Bucket(FnNode.ofExprs(ID, expr, Expr.of(allowDots)));
    }

    public Expr hostLabel() {
        return expectTwoArgs().left();
    }

    public Expr allowDots() {
        return expectTwoArgs().right();
    }

    @Override
    public Value eval(Scope scope) {
        String hostLabel = expectTwoArgs().left().eval(scope).expectString();
        if (allowDots(scope)) {
            // TODO: use compiled Pattern
            return Value.fromBool(hostLabel.matches("[a-z\\d][a-z\\d\\-.]{1,61}[a-z\\d]")
                    && !hostLabel.matches("(\\d+\\.){3}\\d+") // don't allow ip address
                    && !hostLabel.matches(".*[.-]{2}.*") // don't allow names like bucket-.name or bucket.-name
            );
        } else {
            return Value.fromBool(hostLabel.matches("[a-z\\d][a-z\\d\\-]{1,61}[a-z\\d]"));
        }
    }

    private boolean allowDots(Scope scope) {
        return allowDots().eval(scope).expectBool();
    }
}