EsMajorVersion.java

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// distributed with this work for additional information
// regarding copyright ownership.  The ASF 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
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.datasource.es;

/**
 * Elasticsearch major version information.
 * Adapted from fe-core's EsMajorVersion ��� no fe-core dependencies.
 */
public class EsMajorVersion {

    public static final EsMajorVersion V_0_X = new EsMajorVersion((byte) 0, "0.x");
    public static final EsMajorVersion V_1_X = new EsMajorVersion((byte) 1, "1.x");
    public static final EsMajorVersion V_2_X = new EsMajorVersion((byte) 2, "2.x");
    public static final EsMajorVersion V_5_X = new EsMajorVersion((byte) 5, "5.x");
    public static final EsMajorVersion V_6_X = new EsMajorVersion((byte) 6, "6.x");
    public static final EsMajorVersion V_7_X = new EsMajorVersion((byte) 7, "7.x");
    public static final EsMajorVersion V_8_X = new EsMajorVersion((byte) 8, "8.x");
    public static final EsMajorVersion V_9_X = new EsMajorVersion((byte) 9, "9.x");
    public static final EsMajorVersion LATEST = V_9_X;

    public final byte major;
    private final String version;

    private EsMajorVersion(byte major, String version) {
        this.major = major;
        this.version = version;
    }

    public boolean after(EsMajorVersion version) {
        return version.major < major;
    }

    public boolean on(EsMajorVersion version) {
        return version.major == major;
    }

    public boolean notOn(EsMajorVersion version) {
        return !on(version);
    }

    public boolean onOrAfter(EsMajorVersion version) {
        return version.major <= major;
    }

    public boolean before(EsMajorVersion version) {
        return version.major > major;
    }

    public boolean onOrBefore(EsMajorVersion version) {
        return version.major >= major;
    }

    public static EsMajorVersion parse(String version) {
        if (version.startsWith("0.")) {
            return new EsMajorVersion((byte) 0, version);
        }
        if (version.startsWith("1.")) {
            return new EsMajorVersion((byte) 1, version);
        }
        if (version.startsWith("2.")) {
            return new EsMajorVersion((byte) 2, version);
        }
        if (version.startsWith("5.")) {
            return new EsMajorVersion((byte) 5, version);
        }
        if (version.startsWith("6.")) {
            return new EsMajorVersion((byte) 6, version);
        }
        if (version.startsWith("7.")) {
            return new EsMajorVersion((byte) 7, version);
        }
        if (version.startsWith("8.")) {
            return new EsMajorVersion((byte) 8, version);
        }
        // Node discovery parses every node during rolling upgrades; ES 9 uses the same typeless
        // mapping and HTTP scan APIs as ES 8. Keep future, unverified majors explicitly rejected.
        if (version.startsWith("9.")) {
            return new EsMajorVersion((byte) 9, version);
        }
        throw new DorisEsException(
                "Unsupported/Unknown ES Cluster version [" + version + "]. "
                        + "Highest supported version is [" + LATEST.version + "].");
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        EsMajorVersion that = (EsMajorVersion) o;
        return major == that.major;
    }

    @Override
    public int hashCode() {
        return major;
    }

    @Override
    public String toString() {
        return version;
    }
}