CommandPostprocessor (Yamcs :: Core 5.3.2 API)

All Known Implementing Classes:

CfsCommandPostprocessor, GenericCommandPostprocessor, IssCommandPostprocessor, PusCommandPostprocessor
```
public interface CommandPostprocessor
```
The command post processor is responsible to provide the binary packet that will be send out for a PreparedCommand. It is used to add sequence counts, compute checkwords, etc

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default int`	`getBinaryLength(PreparedCommand pc)`	Return the size of the binary packet for this command.
`byte[]`	`process(PreparedCommand pc)`	processes the command and returns the binary buffer.
`default void`	`setCommandHistoryPublisher(CommandHistoryPublisher commandHistoryListener)`	sets the command history listener which can be used by the preprocessor to provide command history entries related to the command processed

- Method Detail
  - process
```
byte[] process(PreparedCommand pc)
```
    processes the command and returns the binary buffer. Returns null if the command cannot be processed (e.g. its size does not correspond to what this processor expects). In this case the postprocessor is expected to fail the command in the command history (also filling in an appropiate reason)
    
    Parameters:
    
    pc -
    
    Returns:
  - setCommandHistoryPublisher
```
default void setCommandHistoryPublisher(CommandHistoryPublisher commandHistoryListener)
```
    sets the command history listener which can be used by the preprocessor to provide command history entries related to the command processed
    
    Parameters:
    
    commandHistoryListener -
  - getBinaryLength
```
default int getBinaryLength(PreparedCommand pc)
```
    Return the size of the binary packet for this command.
    This is required in the frame links which bundle multiple commands together to know if the command will fit into the frame before post-processing it.
    
    Parameters:
    
    pc -
    
    Returns:
    
    the size of the binary packet which the method process(PreparedCommand) will return.