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[Enhancement] (nereids)implement showSmallFilesCommand in nereids (#4…
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91 changes: 91 additions & 0 deletions
91
...re/src/main/java/org/apache/doris/nereids/trees/plans/commands/ShowSmallFilesCommand.java
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| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // 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 | ||
| // "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. | ||
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| package org.apache.doris.nereids.trees.plans.commands; | ||
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| import org.apache.doris.catalog.Column; | ||
| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.catalog.ScalarType; | ||
| import org.apache.doris.common.AnalysisException; | ||
| import org.apache.doris.common.DdlException; | ||
| import org.apache.doris.common.ErrorCode; | ||
| import org.apache.doris.common.ErrorReport; | ||
| import org.apache.doris.datasource.InternalCatalog; | ||
| import org.apache.doris.mysql.privilege.PrivPredicate; | ||
| import org.apache.doris.nereids.trees.plans.PlanType; | ||
| import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor; | ||
| import org.apache.doris.qe.ConnectContext; | ||
| import org.apache.doris.qe.ShowResultSet; | ||
| import org.apache.doris.qe.ShowResultSetMetaData; | ||
| import org.apache.doris.qe.StmtExecutor; | ||
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| import com.google.common.base.Strings; | ||
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| import java.util.List; | ||
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| /** | ||
| * show small file command | ||
| */ | ||
| public class ShowSmallFilesCommand extends ShowCommand { | ||
| private static final ShowResultSetMetaData META_DATA = | ||
| ShowResultSetMetaData.builder() | ||
| .addColumn(new Column("Id", ScalarType.createVarchar(32))) | ||
| .addColumn(new Column("DbName", ScalarType.createVarchar(256))) | ||
| .addColumn(new Column("Catalog", ScalarType.createVarchar(32))) | ||
| .addColumn(new Column("FileName", ScalarType.createVarchar(16))) | ||
| .addColumn(new Column("FileSize", ScalarType.createVarchar(16))) | ||
| .addColumn(new Column("IsContent", ScalarType.createVarchar(16))) | ||
| .addColumn(new Column("MD5", ScalarType.createVarchar(16))) | ||
| .build(); | ||
| private String dbName; // if empty we will use current db; | ||
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| /** | ||
| * constructor | ||
| */ | ||
| public ShowSmallFilesCommand(String dbName) { | ||
| super(PlanType.SHOW_SMALL_FILES_COMMAND); | ||
| this.dbName = dbName; | ||
| } | ||
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| @Override | ||
| public ShowResultSet doRun(ConnectContext ctx, StmtExecutor executor) throws Exception { | ||
| if (Strings.isNullOrEmpty(dbName)) { | ||
| dbName = ctx.getDatabase(); | ||
| if (Strings.isNullOrEmpty(dbName)) { | ||
| ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_DB_ERROR); | ||
| } | ||
| } | ||
| if (!Env.getCurrentEnv().getAccessManager() | ||
| .checkDbPriv(ConnectContext.get(), InternalCatalog.INTERNAL_CATALOG_NAME, dbName, PrivPredicate.SHOW)) { | ||
| ErrorReport.reportAnalysisException( | ||
| ErrorCode.ERR_DBACCESS_DENIED_ERROR, ConnectContext.get().getQualifiedUser(), dbName); | ||
| } | ||
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| List<List<String>> results; | ||
| try { | ||
| results = Env.getCurrentEnv().getSmallFileMgr().getInfo(dbName); | ||
| } catch (DdlException e) { | ||
| throw new AnalysisException(e.getMessage()); | ||
| } | ||
| return new ShowResultSet(META_DATA, results); | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { | ||
| return visitor.visitShowSmallFilesCommand(this, context); | ||
| } | ||
| } |
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