ILogWriter (IoTDB Server 0.14.0-preview2 API)

All Superinterfaces:

java.lang.AutoCloseable, java.io.Closeable

All Known Implementing Classes:

CheckpointWriter, LogWriter, WALWriter
```
public interface ILogWriter
extends java.io.Closeable
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`force()`	Forces any updates to this file to be written to the storage device that contains it.
`void`	`force(boolean metaData)`	Forces any updates to this file to be written to the storage device that contains it.
`java.io.File`	`getLogFile()`	Gets the log file
`long`	`size()`	Returns the current size of this file.
`void`	`write(java.nio.ByteBuffer buffer)`	Write given logs to a persistent medium.

Methods inherited from interface java.io.Closeable
close

- Method Detail
  - write
```
void write(java.nio.ByteBuffer buffer)
    throws java.io.IOException
```
    Write given logs to a persistent medium. NOTICE: the logs may be cached in the storage device, if the storage device you are using do not guarantee strong persistence, and you want the logs to be persisted immediately, please call force() after calling this method. Notice: do not flip the buffer before calling this method
    
    Parameters:
    
    buffer - content that have been converted to bytes
    
    Throws:
    
    java.io.IOException - if an I/O error occurs
  - force
```
void force()
    throws java.io.IOException
```
    Forces any updates to this file to be written to the storage device that contains it.
    
    Throws:
    
    java.io.IOException - if an I/O error occurs
  - force
```
void force(boolean metaData)
    throws java.io.IOException
```
    Forces any updates to this file to be written to the storage device that contains it.
    
    Parameters:
    
    metaData - If true then this method is required to force changes to both the file's content and metadata to be written to storage; otherwise, it needs only force content changes to be written
    
    Throws:
    
    java.io.IOException - if an I/O error occurs
  - size
```
long size()
```
    Returns the current size of this file.
    
    Returns:
    
    size
  - getLogFile
```
java.io.File getLogFile()
```
    Gets the log file
    
    Returns:
    
    log file