Java Code Examples for com.taobao.tddl.dbsync.binlog.LogBuffer#getInt8()

The following examples show how to use com.taobao.tddl.dbsync.binlog.LogBuffer#getInt8() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ExecuteLoadQueryLogEvent.java    From canal-1.1.3 with Apache License 2.0 6 votes vote down vote up 
public ExecuteLoadQueryLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent)
                                                                                                               throws IOException{
    super(header, buffer, descriptionEvent);

    buffer.position(descriptionEvent.commonHeaderLen + ELQ_FILE_ID_OFFSET);

    fileId = buffer.getUint32(); // ELQ_FILE_ID_OFFSET
    fnPosStart = (int) buffer.getUint32(); // ELQ_FN_POS_START_OFFSET
    fnPosEnd = (int) buffer.getUint32(); // ELQ_FN_POS_END_OFFSET
    dupHandling = buffer.getInt8(); // ELQ_DUP_HANDLING_OFFSET

    final int len = query.length();
    if (fnPosStart > len || fnPosEnd > len || dupHandling > LOAD_DUP_REPLACE) {
        throw new IOException(String.format("Invalid ExecuteLoadQueryLogEvent: fn_pos_start=%d, "
                                            + "fn_pos_end=%d, dup_handling=%d", fnPosStart, fnPosEnd, dupHandling));
    }
}
Example 2
Source File: XaPrepareLogEvent.java    From canal-1.1.3 with Apache License 2.0 6 votes vote down vote up 
public XaPrepareLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent){
    super(header);

    final int commonHeaderLen = descriptionEvent.getCommonHeaderLen();
    final int postHeaderLen = descriptionEvent.getPostHeaderLen()[header.getType() - 1];

    int offset = commonHeaderLen + postHeaderLen;
    buffer.position(offset);

    onePhase = (buffer.getInt8() == 0x00 ? false : true);

    formatId = buffer.getInt32();
    gtridLength = buffer.getInt32();
    bqualLength = buffer.getInt32();

    int MY_XIDDATASIZE = 128;
    if (MY_XIDDATASIZE >= gtridLength + bqualLength && gtridLength >= 0 && gtridLength <= 64 && bqualLength >= 0
        && bqualLength <= 64) {
        data = buffer.getData(gtridLength + bqualLength);
    } else {
        formatId = -1;
        gtridLength = 0;
        bqualLength = 0;
    }
}
Example 3
Source File: ExecuteLoadQueryLogEvent.java    From canal with Apache License 2.0 6 votes vote down vote up 
public ExecuteLoadQueryLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent)
                                                                                                               throws IOException{
    super(header, buffer, descriptionEvent);

    buffer.position(descriptionEvent.commonHeaderLen + ELQ_FILE_ID_OFFSET);

    fileId = buffer.getUint32(); // ELQ_FILE_ID_OFFSET
    fnPosStart = (int) buffer.getUint32(); // ELQ_FN_POS_START_OFFSET
    fnPosEnd = (int) buffer.getUint32(); // ELQ_FN_POS_END_OFFSET
    dupHandling = buffer.getInt8(); // ELQ_DUP_HANDLING_OFFSET

    final int len = query.length();
    if (fnPosStart > len || fnPosEnd > len || dupHandling > LOAD_DUP_REPLACE) {
        throw new IOException(String.format("Invalid ExecuteLoadQueryLogEvent: fn_pos_start=%d, "
                                            + "fn_pos_end=%d, dup_handling=%d", fnPosStart, fnPosEnd, dupHandling));
    }
}
Example 4
Source File: XaPrepareLogEvent.java    From canal with Apache License 2.0 6 votes vote down vote up 
public XaPrepareLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent){
    super(header);

    final int commonHeaderLen = descriptionEvent.getCommonHeaderLen();
    final int postHeaderLen = descriptionEvent.getPostHeaderLen()[header.getType() - 1];

    int offset = commonHeaderLen + postHeaderLen;
    buffer.position(offset);

    onePhase = (buffer.getInt8() == 0x00 ? false : true);

    formatId = buffer.getInt32();
    gtridLength = buffer.getInt32();
    bqualLength = buffer.getInt32();

    int MY_XIDDATASIZE = 128;
    if (MY_XIDDATASIZE >= gtridLength + bqualLength && gtridLength >= 0 && gtridLength <= 64 && bqualLength >= 0
        && bqualLength <= 64) {
        data = buffer.getData(gtridLength + bqualLength);
    } else {
        formatId = -1;
        gtridLength = 0;
        bqualLength = 0;
    }
}
Example 5
Source File: IntvarLogEvent.java    From canal-1.1.3 with Apache License 2.0 5 votes vote down vote up 
public IntvarLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent){
    super(header);

    /* The Post-Header is empty. The Varible Data part begins immediately. */
    buffer.position(descriptionEvent.commonHeaderLen + descriptionEvent.postHeaderLen[INTVAR_EVENT - 1]
                    + I_TYPE_OFFSET);
    type = buffer.getInt8(); // I_TYPE_OFFSET
    value = buffer.getLong64(); // !uint8korr(buf + I_VAL_OFFSET);
}
Example 6
Source File: IntvarLogEvent.java    From canal with Apache License 2.0 5 votes vote down vote up 
public IntvarLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent){
    super(header);

    /* The Post-Header is empty. The Varible Data part begins immediately. */
    buffer.position(descriptionEvent.commonHeaderLen + descriptionEvent.postHeaderLen[INTVAR_EVENT - 1]
                    + I_TYPE_OFFSET);
    type = buffer.getInt8(); // I_TYPE_OFFSET
    value = buffer.getLong64(); // !uint8korr(buf + I_VAL_OFFSET);
}
Example 7
Source File: UserVarLogEvent.java    From canal-1.1.3 with Apache License 2.0 4 votes vote down vote up 
public UserVarLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent)
                                                                                                      throws IOException{
    super(header);

    /* The Post-Header is empty. The Variable Data part begins immediately. */
    buffer.position(descriptionEvent.commonHeaderLen + descriptionEvent.postHeaderLen[USER_VAR_EVENT - 1]);
    final int nameLen = (int) buffer.getUint32();
    name = buffer.getFixString(nameLen); // UV_NAME_LEN_SIZE
    isNull = (0 != buffer.getInt8());

    if (isNull) {
        type = STRING_RESULT;
        charsetNumber = 63; /* binary */
        value = null;
    } else {
        type = buffer.getInt8(); // UV_VAL_IS_NULL
        charsetNumber = (int) buffer.getUint32(); // buf + UV_VAL_TYPE_SIZE
        final int valueLen = (int) buffer.getUint32(); // buf +
                                                       // UV_CHARSET_NUMBER_SIZE
        final int limit = buffer.limit(); /* for restore */
        buffer.limit(buffer.position() + valueLen);

        /* @see User_var_log_event::print */
        switch (type) {
            case REAL_RESULT:
                value = Double.valueOf(buffer.getDouble64()); // float8get
                break;
            case INT_RESULT:
                if (valueLen == 8) value = Long.valueOf(buffer.getLong64()); // !uint8korr
                else if (valueLen == 4) value = Long.valueOf(buffer.getUint32());
                else throw new IOException("Error INT_RESULT length: " + valueLen);
                break;
            case DECIMAL_RESULT:
                final int precision = buffer.getInt8();
                final int scale = buffer.getInt8();
                value = buffer.getDecimal(precision, scale); // bin2decimal
                break;
            case STRING_RESULT:
                String charsetName = CharsetConversion.getJavaCharset(charsetNumber);
                value = buffer.getFixString(valueLen, charsetName);
                break;
            case ROW_RESULT:
                // this seems to be banned in MySQL altogether
                throw new IOException("ROW_RESULT is unsupported");
            default:
                value = null;
                break;
        }
        buffer.limit(limit);
    }
}
Example 8
Source File: LoadLogEvent.java    From canal-1.1.3 with Apache License 2.0 4 votes vote down vote up 
/**
 * @see mysql-5.1.60/sql/log_event.cc - Load_log_event::copy_log_event
 */
protected final void copyLogEvent(LogBuffer buffer, final int bodyOffset, FormatDescriptionLogEvent descriptionEvent) {
    /* this is the beginning of the post-header */
    buffer.position(descriptionEvent.commonHeaderLen + L_EXEC_TIME_OFFSET);

    execTime = buffer.getUint32(); // L_EXEC_TIME_OFFSET
    skipLines = (int) buffer.getUint32(); // L_SKIP_LINES_OFFSET
    final int tableNameLen = buffer.getUint8(); // L_TBL_LEN_OFFSET
    final int dbLen = buffer.getUint8(); // L_DB_LEN_OFFSET
    numFields = (int) buffer.getUint32(); // L_NUM_FIELDS_OFFSET

    buffer.position(bodyOffset);
    /*
     * Sql_ex.init() on success returns the pointer to the first byte after
     * the sql_ex structure, which is the start of field lengths array.
     */
    if (header.type != LOAD_EVENT /* use_new_format */) {
        /*
         * The code below assumes that buf will not disappear from under our
         * feet during the lifetime of the event. This assumption holds true
         * in the slave thread if the log is in new format, but is not the
         * case when we have old format because we will be reusing net
         * buffer to read the actual file before we write out the
         * Create_file event.
         */
        fieldTerm = buffer.getString();
        enclosed = buffer.getString();
        lineTerm = buffer.getString();
        lineStart = buffer.getString();
        escaped = buffer.getString();
        optFlags = buffer.getInt8();
        emptyFlags = 0;
    } else {
        fieldTerm = buffer.getFixString(1);
        enclosed = buffer.getFixString(1);
        lineTerm = buffer.getFixString(1);
        lineStart = buffer.getFixString(1);
        escaped = buffer.getFixString(1);
        optFlags = buffer.getUint8();
        emptyFlags = buffer.getUint8();

        if ((emptyFlags & FIELD_TERM_EMPTY) != 0) fieldTerm = null;
        if ((emptyFlags & ENCLOSED_EMPTY) != 0) enclosed = null;
        if ((emptyFlags & LINE_TERM_EMPTY) != 0) lineTerm = null;
        if ((emptyFlags & LINE_START_EMPTY) != 0) lineStart = null;
        if ((emptyFlags & ESCAPED_EMPTY) != 0) escaped = null;
    }

    final int fieldLenPos = buffer.position();
    buffer.forward(numFields);
    fields = new String[numFields];
    for (int i = 0; i < numFields; i++) {
        final int fieldLen = buffer.getUint8(fieldLenPos + i);
        fields[i] = buffer.getFixString(fieldLen + 1);
    }

    table = buffer.getFixString(tableNameLen + 1);
    db = buffer.getFixString(dbLen + 1);

    // null termination is accomplished by the caller
    final int from = buffer.position();
    final int end = from + buffer.limit();
    int found = from;
    for (; (found < end) && buffer.getInt8(found) != '\0'; found++)
        /* empty loop */;
    fname = buffer.getString(found);
    buffer.forward(1); // The + 1 is for \0 terminating fname
}
Example 9
Source File: UserVarLogEvent.java    From canal with Apache License 2.0 4 votes vote down vote up 
public UserVarLogEvent(LogHeader header, LogBuffer buffer, FormatDescriptionLogEvent descriptionEvent)
                                                                                                      throws IOException{
    super(header);

    /* The Post-Header is empty. The Variable Data part begins immediately. */
    buffer.position(descriptionEvent.commonHeaderLen + descriptionEvent.postHeaderLen[USER_VAR_EVENT - 1]);
    final int nameLen = (int) buffer.getUint32();
    name = buffer.getFixString(nameLen); // UV_NAME_LEN_SIZE
    isNull = (0 != buffer.getInt8());

    if (isNull) {
        type = STRING_RESULT;
        charsetNumber = 63; /* binary */
        value = null;
    } else {
        type = buffer.getInt8(); // UV_VAL_IS_NULL
        charsetNumber = (int) buffer.getUint32(); // buf + UV_VAL_TYPE_SIZE
        final int valueLen = (int) buffer.getUint32(); // buf +
                                                       // UV_CHARSET_NUMBER_SIZE
        final int limit = buffer.limit(); /* for restore */
        buffer.limit(buffer.position() + valueLen);

        /* @see User_var_log_event::print */
        switch (type) {
            case REAL_RESULT:
                value = Double.valueOf(buffer.getDouble64()); // float8get
                break;
            case INT_RESULT:
                if (valueLen == 8) value = Long.valueOf(buffer.getLong64()); // !uint8korr
                else if (valueLen == 4) value = Long.valueOf(buffer.getUint32());
                else throw new IOException("Error INT_RESULT length: " + valueLen);
                break;
            case DECIMAL_RESULT:
                final int precision = buffer.getInt8();
                final int scale = buffer.getInt8();
                value = buffer.getDecimal(precision, scale); // bin2decimal
                break;
            case STRING_RESULT:
                String charsetName = CharsetConversion.getJavaCharset(charsetNumber);
                value = buffer.getFixString(valueLen, charsetName);
                break;
            case ROW_RESULT:
                // this seems to be banned in MySQL altogether
                throw new IOException("ROW_RESULT is unsupported");
            default:
                value = null;
                break;
        }
        buffer.limit(limit);
    }
}
Example 10
Source File: LoadLogEvent.java    From canal with Apache License 2.0 4 votes vote down vote up 
/**
 * @see mysql-5.1.60/sql/log_event.cc - Load_log_event::copy_log_event
 */
protected final void copyLogEvent(LogBuffer buffer, final int bodyOffset, FormatDescriptionLogEvent descriptionEvent) {
    /* this is the beginning of the post-header */
    buffer.position(descriptionEvent.commonHeaderLen + L_EXEC_TIME_OFFSET);

    execTime = buffer.getUint32(); // L_EXEC_TIME_OFFSET
    skipLines = (int) buffer.getUint32(); // L_SKIP_LINES_OFFSET
    final int tableNameLen = buffer.getUint8(); // L_TBL_LEN_OFFSET
    final int dbLen = buffer.getUint8(); // L_DB_LEN_OFFSET
    numFields = (int) buffer.getUint32(); // L_NUM_FIELDS_OFFSET

    buffer.position(bodyOffset);
    /*
     * Sql_ex.init() on success returns the pointer to the first byte after
     * the sql_ex structure, which is the start of field lengths array.
     */
    if (header.type != LOAD_EVENT /* use_new_format */) {
        /*
         * The code below assumes that buf will not disappear from under our
         * feet during the lifetime of the event. This assumption holds true
         * in the slave thread if the log is in new format, but is not the
         * case when we have old format because we will be reusing net
         * buffer to read the actual file before we write out the
         * Create_file event.
         */
        fieldTerm = buffer.getString();
        enclosed = buffer.getString();
        lineTerm = buffer.getString();
        lineStart = buffer.getString();
        escaped = buffer.getString();
        optFlags = buffer.getInt8();
        emptyFlags = 0;
    } else {
        fieldTerm = buffer.getFixString(1);
        enclosed = buffer.getFixString(1);
        lineTerm = buffer.getFixString(1);
        lineStart = buffer.getFixString(1);
        escaped = buffer.getFixString(1);
        optFlags = buffer.getUint8();
        emptyFlags = buffer.getUint8();

        if ((emptyFlags & FIELD_TERM_EMPTY) != 0) fieldTerm = null;
        if ((emptyFlags & ENCLOSED_EMPTY) != 0) enclosed = null;
        if ((emptyFlags & LINE_TERM_EMPTY) != 0) lineTerm = null;
        if ((emptyFlags & LINE_START_EMPTY) != 0) lineStart = null;
        if ((emptyFlags & ESCAPED_EMPTY) != 0) escaped = null;
    }

    final int fieldLenPos = buffer.position();
    buffer.forward(numFields);
    fields = new String[numFields];
    for (int i = 0; i < numFields; i++) {
        final int fieldLen = buffer.getUint8(fieldLenPos + i);
        fields[i] = buffer.getFixString(fieldLen + 1);
    }

    table = buffer.getFixString(tableNameLen + 1);
    db = buffer.getFixString(dbLen + 1);

    // null termination is accomplished by the caller
    final int from = buffer.position();
    final int end = from + buffer.limit();
    int found = from;
    for (; (found < end) && buffer.getInt8(found) != '\0'; found++)
        /* empty loop */;
    fname = buffer.getString(found);
    buffer.forward(1); // The + 1 is for \0 terminating fname
}