RecordInfo readRecordInfo()

in activeio-core/src/main/java/org/apache/activeio/journal/active/LogFileManager.java [361:388]

• 24 lines of code
• 5 McCabe index (conditional complexity)

    RecordInfo readRecordInfo(Location location) throws IOException, InvalidRecordLocationException {

        LogFile logFile;
        LogFileNode logFileState = getLogFileWithId(location.getLogFileId());
        if( logFileState !=null ) {
            // There can be no record at the append offset.
            if (logFileState.getAppendOffset() == location.getLogFileOffset()) {
                throw new InvalidRecordLocationException("No record at (" + location
                        + ") found.  Location past end of logged data.");
            }
            logFile = logFileState.getLogFile();
        } else {
            if( archiveDirectory==null ) {
                throw new InvalidRecordLocationException("Log file: " + location.getLogFileId() + " is not active.");
            } else {
                logFile = getArchivedLogFile(location.getLogFileId());
            }
        }

        // Is there a record header at the seeked location?
        try {
            Record header = new Record();
            logFile.readRecordHeader(location.getLogFileOffset(), header);
            return new RecordInfo(location, header, logFileState, logFile);
        } catch (IOException e) {
            throw new InvalidRecordLocationException("No record at (" + location + ") found.");
        }
    }