ExtensionStartInput (HiveMQ Extension SDK 4.7.1 API)

@Immutable
@DoNotImplement
public interface ExtensionStartInput

Input object for the start of an extension.

Since:: 4.0.0, CE 2019.1

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`@NotNull Map<String,@NotNull ExtensionInformation>`	`getEnabledExtensions()`
`@NotNull ExtensionInformation`	`getExtensionInformation()`
`@NotNull Optional<String>`	`getPreviousVersion()`
`@NotNull ServerInformation`	`getServerInformation()`	Get information about the HiveMQ instance the extension is running in.

- Method Detail
  - getExtensionInformation
```
@NotNull ExtensionInformation getExtensionInformation()
```
    Returns:
    
    An ExtensionInformation containing detailed information about this extension.
    
    Since:
    
    4.0.0, CE 2019.1
  - getServerInformation
```
@NotNull ServerInformation getServerInformation()
```
    Get information about the HiveMQ instance the extension is running in.
    
    Returns:
    
    The ServerInformation of the input.
    
    Since:
    
    4.2.0, CE 2020.1
  - getEnabledExtensions
```
@NotNull Map<String,@NotNull ExtensionInformation> getEnabledExtensions()
```
    Returns:
    
    A Map of all currently enabled extensions. The key is the ID of the extension. The value is a ExtensionInformation containing detailed information about each extension.
    
    Since:
    
    4.0.0, CE 2019.1
  - getPreviousVersion
```
@NotNull Optional<String> getPreviousVersion()
```
    Returns:
    
    The previously enabled version of this extension or Optional.empty if this extension was not enabled before. An extension is identified by its ID. A previous version is only returned if this extension has been disabled at runtime. Information about previous extension versions is not retained across a server restart.
    
    Since:
    
    4.0.0, CE 2019.1