BdbjeDatabaseProcDir.java

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// 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
//
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package org.apache.doris.common.proc;

import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.Config;
import org.apache.doris.journal.bdbje.BDBDebugger;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;

import java.util.List;

// SHOW PROC "/bdbje/dbname/"
public class BdbjeDatabaseProcDir implements ProcDirInterface  {
    public static final ImmutableList<String> TITLE_NAMES = new ImmutableList.Builder<String>()
            .add("JournalId").build();

    private String dbName;

    public BdbjeDatabaseProcDir(String dbName) {
        this.dbName = dbName;
    }

    @Override
    public boolean register(String name, ProcNodeInterface node) {
        return false;
    }

    @Override
    public ProcNodeInterface lookup(String journalId) throws AnalysisException {
        return new BdbjeJournalDataProcNode(dbName, Long.valueOf(journalId));
    }

    @Override
    public ProcResult fetchResult() throws AnalysisException {
        if (!Config.enable_bdbje_debug_mode) {
            throw new AnalysisException("Not in bdbje debug mode");
        }

        BaseProcResult result = new BaseProcResult();
        result.setNames(TITLE_NAMES);

        BDBDebugger.BDBDebugEnv env = BDBDebugger.get().getEnv();
        try {
            List<Long> journalIds = env.getJournalIds(dbName);
            for (Long journalId : journalIds) {
                result.addRow(Lists.newArrayList(journalId.toString()));
            }
        } catch (BDBDebugger.BDBDebugException e) {
            throw new AnalysisException(e.getMessage());
        }

        return result;
    }
}