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/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License 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 org.elasticsearch.cloud.aws;

import com.amazonaws.ClientConfiguration;

import org.elasticsearch.test.ESTestCase;

import static org.hamcrest.CoreMatchers.is;

public class AWSSignersTests extends ESTestCase {
    public void testSigners() {
        assertThat(signerTester(null), is(false));
        assertThat(signerTester("QueryStringSignerType"), is(true));
        assertThat(signerTester("AWS3SignerType"), is(true));
        assertThat(signerTester("AWS4SignerType"), is(true));
        assertThat(signerTester("NoOpSignerType"), is(true));
        assertThat(signerTester("UndefinedSigner"), is(false));
        assertThat(signerTester("S3SignerType"), is(true));
        assertThat(signerTester("AWSS3V4SignerType"), is(true));

        ClientConfiguration configuration = new ClientConfiguration();
        AwsSigner.configureSigner("AWS4SignerType", configuration, "any");
        assertEquals(configuration.getSignerOverride(), "AWS4SignerType");
        AwsSigner.configureSigner("S3SignerType", configuration, "any");
        assertEquals(configuration.getSignerOverride(), "S3SignerType");
    }

    public void testV2InInvalidRegion() {
        try {
            AwsSigner.validateSignerType("S3SignerType", "s3.cn-north-1.amazonaws.com.cn");
            fail("S3SignerType should not be available for China region");
        } catch (IllegalArgumentException e) {
            assertEquals("[S3SignerType] may not be supported in aws Beijing and Frankfurt region", e.getMessage());
        }

        try {
            AwsSigner.validateSignerType("S3SignerType", "s3.eu-central-1.amazonaws.com");
            fail("S3SignerType should not be available for Frankfurt region");
        } catch (IllegalArgumentException e) {
            assertEquals("[S3SignerType] may not be supported in aws Beijing and Frankfurt region", e.getMessage());
        }
    }


    /**
     * Test a signer configuration
     * @param signer signer name
     * @return true if successful, false otherwise
     */
    private boolean signerTester(String signer) {
        try {
            AwsSigner.validateSignerType(signer, "s3.amazonaws.com");
            return true;
        } catch (IllegalArgumentException e) {
            return false;
        }
    }
}