io.debezium.ibmi.db2.journal.retrieve.rjne0200.EntryHeader Maven / Gradle / Ivy

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/*
 * Copyright Debezium Authors.
 *
 * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
 */
package io.debezium.ibmi.db2.journal.retrieve.rjne0200;

import java.math.BigInteger;
import java.time.Instant;

import io.debezium.ibmi.db2.journal.retrieve.JournalEntryType;
import io.debezium.ibmi.db2.journal.retrieve.StringHelpers;

public class EntryHeader {
    private final int nextEntryOffset;
    private final int nullValueOffest;
    private final int entrySpecificDataOffset;
    // private final int transactionDataOffset;
    // private final int logicalWorkOffset;
    // private final int receiverOffset;
    private final BigInteger sequenceNumber;
    private final BigInteger systemSequenceNumber;
    private final Instant timestamp;
    private final char journalCode;
    private final String entryType;
    private final String objectName;
    private final BigInteger commitCycle;
    private final int endOffset;
    private final long pointerHandle;
    private final String receiver;
    private final String receiverLibrary;

    public EntryHeader(int nextEntryOffset, int nullValueOffest, long entrySpecificDataOffset, BigInteger sequenceNumber, BigInteger systemSequenceNumber,
                       Instant timestamp, char journalCode, String entryType, String objectName, BigInteger commitCycle, int endOffset, long pointerHandle,
                       String receiver, String receiverLibrary) {
        super();
        this.nextEntryOffset = nextEntryOffset;
        this.nullValueOffest = nullValueOffest;
        this.entrySpecificDataOffset = (int) entrySpecificDataOffset;
        this.sequenceNumber = sequenceNumber;
        this.systemSequenceNumber = systemSequenceNumber;
        this.timestamp = timestamp;
        this.journalCode = journalCode;
        this.entryType = entryType;
        this.objectName = objectName;
        this.commitCycle = commitCycle;
        this.endOffset = endOffset;
        this.pointerHandle = pointerHandle;
        this.receiver = receiver;
        this.receiverLibrary = receiverLibrary;
    }

    @Override
    public String toString() {
        return String.format(
                "EntryHeader [nextEntryOffset=%s, nullValueOffest=%s, entrySpecificDataOffset=%s, sequenceNumber=%s, systemSequenceNumber=%s, timestamp=%s, journalCode=%s, entryType=%s, objectName=%s, commitCycle=%s, endOffset=%s, pointerHandle=%s, receiver=%s, receiverLibrary=%s]",
                nextEntryOffset, nullValueOffest, entrySpecificDataOffset, sequenceNumber, systemSequenceNumber,
                timestamp, journalCode, entryType, objectName, commitCycle, endOffset, pointerHandle, receiver,
                receiverLibrary);
    }

    public int getLength() {
        return getEndOffset() - getEntrySpecificDataOffset();
    }

    public int getNextEntryOffset() {
        return nextEntryOffset;
    }

    public int getEntrySpecificDataOffset() {
        return entrySpecificDataOffset;
    }

    public BigInteger getSequenceNumber() {
        return sequenceNumber;
    }

    public BigInteger getSystemSequenceNumber() {
        return systemSequenceNumber;
    }

    public Instant getTime() {
        if (timestamp == null) {
            return Instant.ofEpochSecond(0);
        }
        return timestamp;
    }

    public char getJournalCode() {
        return journalCode;
    }

    public String getEntryType() {
        return entryType;
    }

    public String getObjectName() {
        return objectName;
    }

    public JournalEntryType getJournalEntryType() {
        String entryType = String.format("%s.%s", getJournalCode(), getEntryType());
        return JournalEntryType.toValue(entryType);
    }

    /**
     * @return table name
     */
    public String getFile() {
        return StringHelpers.safeTrim(objectName.substring(0, 10));
    }

    /**
     * @return schema
     */
    public String getLibrary() {
        return StringHelpers.safeTrim(objectName.substring(10, 20));
    }

    /**
     * @return magic stuff within a file
     */
    public String getMember() {
        return StringHelpers.safeTrim(objectName.substring(20, 30));
    }

    public BigInteger getCommitCycle() {
        return commitCycle;
    }

    public int getEndOffset() {
        return endOffset;
    }

    public int getNullValueOffest() {
        return nullValueOffest;
    }

    public boolean hasReceiver() {
        return !receiver.isEmpty();
    }

    public String getReceiver() {
        return receiver;
    }

    public String getReceiverLibrary() {
        return receiverLibrary;
    }
}