io.crate.metadata.sys.SysOperationsTableInfo.java Source code

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Here is the source code for io.crate.metadata.sys.SysOperationsTableInfo.java

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/*
 * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.metadata.sys;

import com.google.common.collect.ImmutableMap;
import io.crate.action.sql.SessionContext;
import io.crate.analyze.WhereClause;
import io.crate.expression.reference.sys.operation.OperationContext;
import io.crate.metadata.ColumnIdent;
import io.crate.metadata.Routing;
import io.crate.metadata.RoutingProvider;
import io.crate.metadata.RowContextCollectorExpression;
import io.crate.metadata.RowGranularity;
import io.crate.metadata.TableIdent;
import io.crate.metadata.expressions.RowCollectExpressionFactory;
import io.crate.metadata.table.ColumnRegistrar;
import io.crate.metadata.table.StaticTableInfo;
import io.crate.types.DataTypes;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.node.DiscoveryNode;

import java.util.Collections;
import java.util.Map;
import java.util.function.Supplier;

public class SysOperationsTableInfo extends StaticTableInfo {

    public static final TableIdent IDENT = new TableIdent(SysSchemaInfo.NAME, "operations");

    public static class Columns {
        public static final ColumnIdent ID = new ColumnIdent("id");
        static final ColumnIdent JOB_ID = new ColumnIdent("job_id");
        public static final ColumnIdent NAME = new ColumnIdent("name");
        public static final ColumnIdent STARTED = new ColumnIdent("started");
        static final ColumnIdent USED_BYTES = new ColumnIdent("used_bytes");
        static final ColumnIdent NODE = new ColumnIdent("node");
        static final ColumnIdent NODE_ID = new ColumnIdent("node", "id");
        static final ColumnIdent NODE_NAME = new ColumnIdent("node", "name");
    }

    public static Map<ColumnIdent, RowCollectExpressionFactory<OperationContext>> expressions(
            Supplier<DiscoveryNode> localNode) {
        return ImmutableMap.<ColumnIdent, RowCollectExpressionFactory<OperationContext>>builder()
                .put(SysOperationsTableInfo.Columns.ID,
                        () -> RowContextCollectorExpression.objToBytesRef(OperationContext::id))
                .put(SysOperationsTableInfo.Columns.JOB_ID,
                        () -> RowContextCollectorExpression.objToBytesRef(OperationContext::jobId))
                .put(SysOperationsTableInfo.Columns.NAME,
                        () -> RowContextCollectorExpression.objToBytesRef(OperationContext::name))
                .put(SysOperationsTableInfo.Columns.STARTED,
                        () -> RowContextCollectorExpression.forFunction(OperationContext::started))
                .put(SysOperationsTableInfo.Columns.USED_BYTES,
                        () -> RowContextCollectorExpression.forFunction(r -> {
                            if (r.usedBytes == 0) {
                                return null;
                            }
                            return r.usedBytes;
                        }))
                .put(Columns.NODE, () -> RowContextCollectorExpression.forFunction(ignored -> ImmutableMap.of("id",
                        new BytesRef(localNode.get().getId()), "name", new BytesRef(localNode.get().getName()))))
                .put(Columns.NODE_ID,
                        () -> RowContextCollectorExpression
                                .forFunction(ignored -> new BytesRef(localNode.get().getId())))
                .put(Columns.NODE_NAME, () -> RowContextCollectorExpression
                        .forFunction(ignored -> new BytesRef(localNode.get().getName())))
                .build();
    }

    SysOperationsTableInfo() {
        super(IDENT,
                new ColumnRegistrar(IDENT, RowGranularity.DOC).register(Columns.ID, DataTypes.STRING)
                        .register(Columns.JOB_ID, DataTypes.STRING).register(Columns.NAME, DataTypes.STRING)
                        .register(Columns.STARTED, DataTypes.TIMESTAMP).register(Columns.USED_BYTES, DataTypes.LONG)
                        .register(Columns.NODE, DataTypes.OBJECT).register(Columns.NODE_ID, DataTypes.STRING)
                        .register(Columns.NODE_NAME, DataTypes.STRING),
                Collections.emptyList());
    }

    @Override
    public RowGranularity rowGranularity() {
        return RowGranularity.DOC;
    }

    @Override
    public Routing getRouting(ClusterState clusterState, RoutingProvider routingProvider, WhereClause whereClause,
            RoutingProvider.ShardSelection shardSelection, SessionContext sessionContext) {
        return Routing.forTableOnAllNodes(IDENT, clusterState.getNodes());
    }
}