com.palantir.atlasdb.keyvalue.dbkvs.DdlConfig Maven / Gradle / Ivy

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/*
 * (c) Copyright 2018 Palantir Technologies Inc. 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.
 * 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 com.palantir.atlasdb.keyvalue.dbkvs;

import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.palantir.atlasdb.keyvalue.api.TableReference;
import com.palantir.logsafe.Preconditions;
import org.immutables.value.Value;

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type", visible = false)
@JsonSubTypes({
    @JsonSubTypes.Type(PostgresDdlConfig.class),
    @JsonSubTypes.Type(OracleDdlConfig.class),
    @JsonSubTypes.Type(H2DdlConfig.class)
})
public abstract class DdlConfig {
    public abstract String type();

    public abstract TableReference metadataTable();

    @Value.Default
    public String tablePrefix() {
        return "";
    }

    @Value.Default
    public int poolSize() {
        return 64;
    }

    /**
     * If set to a positive number, this is the maximum number of concurrent tasks that may execute from a single
     * parallel operation. The overall max concurrency is still limited by the {@link #poolSize()}. Parallel operations
     * include multiPut, truncateTables, and getRanges (postgres only).
     * 
     * If this is 0 or negative, then no limit is enforced.
     */
    @Value.Default
    public int poolQosSize() {
        return 0;
    }

    @Value.Default
    public int fetchBatchSize() {
        return 256;
    }

    @Value.Default
    public int mutationBatchCount() {
        return 1000;
    }

    @Value.Default
    public int mutationBatchSizeBytes() {
        return 2 * 1024 * 1024;
    }

    @Value.Check
    protected final void check() {
        Preconditions.checkState(
                metadataTable().getNamespace().isEmptyNamespace(), "'metadataTable' should have empty namespace'");
    }

    public interface Visitor {
        T visit(PostgresDdlConfig postgresDdlConfig);

        T visit(H2DdlConfig h2DdlConfig);

        T visit(OracleDdlConfig oracleDdlConfig);
    }

    public abstract  T accept(Visitor visitor);
}