package io.dropwizard.cli;
import io.dropwizard.Application;
import io.dropwizard.Configuration;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;
import net.sourceforge.argparse4j.inf.Namespace;
import javax.validation.Validation;
/**
* A command which executes with a configured {@link Environment}.
*
* @param <T> the {@link Configuration} subclass which is loaded from the configuration file
* @see Configuration
*/
public abstract class EnvironmentCommand<T extends Configuration> extends ConfiguredCommand<T> {
private final Application<T> application;
/**
* Creates a new environment command.
*
* @param application the application providing this command
* @param name the name of the command, used for command line invocation
* @param description a description of the command's purpose
*/
protected EnvironmentCommand(Application<T> application, String name, String description) {
super(name, description);
this.application = application;
}
@Override
protected final void run(Bootstrap<T> bootstrap, Namespace namespace, T configuration) throws Exception {
final Environment environment = new Environment(bootstrap.getApplication().getName(),
bootstrap.getObjectMapper(),
bootstrap.getValidatorFactory().getValidator(),
bootstrap.getMetricRegistry(),
bootstrap.getClassLoader());
configuration.getMetricsFactory().configure(environment.lifecycle(),
bootstrap.getMetricRegistry());
bootstrap.run(configuration, environment);
application.run(configuration, environment);
run(environment, namespace, configuration);
}
/**
* Runs the command with the given {@link Environment} and {@link Configuration}.
*
* @param environment the configured environment
* @param namespace the parsed command line namespace
* @param configuration the configuration object
* @throws Exception if something goes wrong
*/
protected abstract void run(Environment environment, Namespace namespace, T configuration) throws Exception;
}