Package io.dropwizard.core

Class Application<T extends Configuration>

java.lang.Object

io.dropwizard.core.Application<T>

Type Parameters:

T - the type of configuration class for this application

Direct Known Subclasses:

HelloWorldApplication

public abstract class Application<T extends Configuration>
extends Object

The base class for Dropwizard applications. Because the default constructor will be inherited by all subclasses, {BootstrapLogging.bootstrap()} will always be invoked. The log level used during the bootstrap process can be configured by {Application} subclasses by overriding {#bootstrapLogLevel}.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Application()

Method Summary

Modifier and Type	Method	Description
protected void	addDefaultCommands(Bootstrap<T> bootstrap)	Called by run(String...) to add the standard "server" and "check" commands
protected void	bootstrapLogging()
protected ch.qos.logback.classic.Level	bootstrapLogLevel()	The log level at which to bootstrap logging on application startup.
Class<T>	getConfigurationClass()	Returns the Class of the configuration class type parameter.
String	getName()	Returns the name of the application.
void	initialize(Bootstrap<T> bootstrap)	Initializes the application bootstrap.
protected void	onFatalError(Throwable t)	Called by run(String...) to indicate there was a fatal error running the requested command.
void	run(String... arguments)	Parses command-line arguments and runs the application.
abstract void	run(T configuration, Environment environment)	When the application runs, this is called after the ConfiguredBundles are run.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Application

protected Application()

Method Detail

bootstrapLogLevel

protected ch.qos.logback.classic.Level bootstrapLogLevel()

The log level at which to bootstrap logging on application startup.

bootstrapLogging

protected void bootstrapLogging()

getConfigurationClass

public Class<T> getConfigurationClass()

Returns the Class of the configuration class type parameter.

Returns:

the configuration class

See Also:

Generics.getTypeParameter(Class, Class)

getName

public String getName()

Returns the name of the application.

Returns:

the application's name

initialize

public void initialize(Bootstrap<T> bootstrap)

Initializes the application bootstrap.

Parameters:

bootstrap - the application bootstrap

run

public abstract void run(T configuration,
                         Environment environment)
                  throws Exception

When the application runs, this is called after the ConfiguredBundles are run. Override it to add providers, resources, etc. for your application.

Parameters:

configuration - the parsed Configuration object

environment - the application's Environment

Throws:

Exception - if something goes wrong

run

public void run(String... arguments)
         throws Exception

Parses command-line arguments and runs the application. Call this method from a public static void main entry point in your application.

Parameters:

arguments - the command-line arguments

Throws:

Exception - if something goes wrong

addDefaultCommands

protected void addDefaultCommands(Bootstrap<T> bootstrap)

Called by run(String...) to add the standard "server" and "check" commands

Parameters:

bootstrap - the bootstrap instance

onFatalError

protected void onFatalError(Throwable t)

Called by run(String...) to indicate there was a fatal error running the requested command. The default implementation calls System.exit(int) with a non-zero status code to terminate the application.

Parameters:

t - The Throwable instance which caused the command to fail.

Since:

2.0