68 lines
2.2 KiB
Java
68 lines
2.2 KiB
Java
package org.telegram.telegrambots.meta;
|
|
|
|
import com.google.inject.AbstractModule;
|
|
import com.google.inject.Guice;
|
|
import com.google.inject.Injector;
|
|
import com.google.inject.Singleton;
|
|
import org.slf4j.Logger;
|
|
import org.slf4j.LoggerFactory;
|
|
|
|
import java.text.MessageFormat;
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
/**
|
|
* @author Ruben Bermudez
|
|
* @version 1.0
|
|
*/
|
|
public class ApiContext {
|
|
private static final Logger log = LoggerFactory.getLogger(ApiContext.class);
|
|
|
|
private static final Object lock = new Object();
|
|
private static Injector INJECTOR;
|
|
private static Map<Class, Class> bindings = new HashMap<>();
|
|
private static Map<Class, Class> singletonBindings = new HashMap<>();
|
|
|
|
public static <T> T getInstance(Class<T> type) {
|
|
return getInjector().getInstance(type);
|
|
}
|
|
|
|
public static <T, S extends T> void register(Class<T> type, Class<S> implementation) {
|
|
if (bindings.containsKey(type)) {
|
|
log.debug(MessageFormat.format("Class {0} already registered", type.getName()));
|
|
}
|
|
bindings.put(type, implementation);
|
|
}
|
|
|
|
public static <T, S extends T> void registerSingleton(Class<T> type, Class<S> implementation) {
|
|
if (singletonBindings.containsKey(type)) {
|
|
log.debug(MessageFormat.format("Class {0} already registered", type.getName()));
|
|
}
|
|
singletonBindings.put(type, implementation);
|
|
}
|
|
|
|
private static Injector getInjector() {
|
|
if (INJECTOR == null) {
|
|
synchronized (lock) {
|
|
if (INJECTOR == null) {
|
|
INJECTOR = Guice.createInjector(new ApiModule());
|
|
}
|
|
}
|
|
}
|
|
return INJECTOR;
|
|
}
|
|
|
|
@SuppressWarnings("unchecked")
|
|
private static class ApiModule extends AbstractModule {
|
|
@Override
|
|
protected void configure() {
|
|
for (Map.Entry<Class, Class> binding : bindings.entrySet()) {
|
|
bind(binding.getKey()).to(binding.getValue());
|
|
}
|
|
for (Map.Entry<Class, Class> binding : singletonBindings.entrySet()) {
|
|
bind(binding.getKey()).to(binding.getValue()).in(Singleton.class);
|
|
}
|
|
}
|
|
}
|
|
}
|