Configuration and Bootstrap

/**
 * Main bootstrap class for programmatic Dubbo initialization
 */
public class DubboBootstrap {
    /** Get singleton bootstrap instance */
    public static DubboBootstrap getInstance();
    
    /** Configure application settings */
    public DubboBootstrap application(ApplicationConfig application);
    
    /** Add protocol configuration */
    public DubboBootstrap protocol(ProtocolConfig protocol);
    
    /** Add multiple protocol configurations */
    public DubboBootstrap protocols(List<ProtocolConfig> protocols);
    
    /** Add registry configuration */
    public DubboBootstrap registry(RegistryConfig registry);
    
    /** Add multiple registry configurations */
    public DubboBootstrap registries(List<RegistryConfig> registries);
    
    /** Add service configuration */
    public DubboBootstrap service(ServiceConfig<?> service);
    
    /** Add reference configuration */
    public DubboBootstrap reference(ReferenceConfig<?> reference);
    
    /** Add provider default configuration */
    public DubboBootstrap provider(ProviderConfig provider);
    
    /** Add consumer default configuration */
    public DubboBootstrap consumer(ConsumerConfig consumer);
    
    /** Add module configuration */
    public DubboBootstrap module(ModuleConfig module);
    
    /** Add configuration center */
    public DubboBootstrap configCenter(ConfigCenterConfig configCenter);
    
    /** Add metadata configuration */
    public DubboBootstrap metadataReport(MetadataReportConfig metadataReport);
    
    /** Start Dubbo framework */
    public DubboBootstrap start();
    
    /** Stop Dubbo framework */
    public DubboBootstrap stop();
    
    /** Check if Dubbo is started */
    public boolean isStarted();
    
    /** Await until Dubbo is ready */
    public DubboBootstrap await();
}

import org.apache.dubbo.config.bootstrap.DubboBootstrap;
import org.apache.dubbo.config.*;

// Complete bootstrap setup
DubboBootstrap bootstrap = DubboBootstrap.getInstance();

// Configure application
ApplicationConfig app = new ApplicationConfig("my-dubbo-app");
app.setVersion("1.0.0");
app.setOwner("development-team");

// Configure protocol
ProtocolConfig protocol = new ProtocolConfig();
protocol.setName("dubbo");
protocol.setPort(20880);
protocol.setThreads(200);

// Configure registry
RegistryConfig registry = new RegistryConfig();
registry.setAddress("zookeeper://127.0.0.1:2181");
registry.setUsername("admin");
registry.setPassword("secret");

// Bootstrap with configurations
bootstrap.application(app)
         .protocol(protocol)
         .registry(registry)
         .start();

// Graceful shutdown
Runtime.getRuntime().addShutdownHook(new Thread(bootstrap::stop));

/**
 * Application-level configuration
 */
public class ApplicationConfig extends AbstractConfig {
    public ApplicationConfig();
    public ApplicationConfig(String name);
    
    /** Set application name */
    public void setName(String name);
    public String getName();
    
    /** Set application version */
    public void setVersion(String version);
    public String getVersion();
    
    /** Set application owner */
    public void setOwner(String owner);
    public String getOwner();
    
    /** Set organization name */
    public void setOrganization(String organization);
    public String getOrganization();
    
    /** Set application architecture layer */
    public void setArchitecture(String architecture);
    public String getArchitecture();
    
    /** Set application environment */
    public void setEnvironment(String environment);
    public String getEnvironment();
    
    /** Set compiler for dynamic proxy generation */
    public void setCompiler(String compiler);
    public String getCompiler();
    
    /** Set logger implementation */
    public void setLogger(String logger);
    public String getLogger();
    
    /** Set dump directory for thread dumps */
    public void setDumpDirectory(String dumpDirectory);
    public String getDumpDirectory();
    
    /** Enable/disable QoS server */
    public void setQosEnable(Boolean qosEnable);
    public Boolean getQosEnable();
    
    /** Set QoS server port */
    public void setQosPort(Integer qosPort);
    public Integer getQosPort();
    
    /** Accept external QoS connections */
    public void setQosAcceptForeignIp(Boolean qosAcceptForeignIp);
    public Boolean getQosAcceptForeignIp();
}

/**
 * Protocol configuration for communication layer
 */
public class ProtocolConfig extends AbstractConfig {
    public ProtocolConfig();
    public ProtocolConfig(String name);
    public ProtocolConfig(String name, int port);
    
    /** Set protocol name (dubbo, rest, grpc, etc.) */
    public void setName(String name);
    public String getName();
    
    /** Set protocol port */
    public void setPort(int port);
    public int getPort();
    
    /** Set bind host */
    public void setHost(String host);
    public String getHost();
    
    /** Set thread pool size */
    public void setThreads(int threads);
    public int getThreads();
    
    /** Set IO thread pool size */
    public void setIothreads(int iothreads);
    public int getIothreads();
    
    /** Set thread pool type */
    public void setThreadpool(String threadpool);
    public String getThreadpool();
    
    /** Set accept connections limit */
    public void setAccepts(int accepts);
    public int getAccepts();
    
    /** Set payload limit in bytes */
    public void setPayload(int payload);
    public int getPayload();
    
    /** Set codec type */
    public void setCodec(String codec);
    public String getCodec();
    
    /** Set compression type */
    public void setCompression(String compression);
    public String getCompression();
    
    /** Set serialization type */
    public void setSerialization(String serialization);
    public String getSerialization();
    
    /** Set network transport */
    public void setTransporter(String transporter);
    public String getTransporter();
    
    /** Set channel handler */
    public void setDispatcher(String dispatcher);
    public String getDispatcher();
    
    /** Set heartbeat interval */
    public void setHeartbeat(int heartbeat);
    public int getHeartbeat();
    
    /** Enable SSL */
    public void setSslEnabled(Boolean sslEnabled);
    public Boolean getSslEnabled();
}

/**
 * Registry configuration for service discovery
 */
public class RegistryConfig extends AbstractConfig {
    public RegistryConfig();
    public RegistryConfig(String address);
    
    /** Set registry address */
    public void setAddress(String address);
    public String getAddress();
    
    /** Set registry protocol */
    public void setProtocol(String protocol);
    public String getProtocol();
    
    /** Set registry port */
    public void setPort(int port);
    public int getPort();
    
    /** Set username for authentication */
    public void setUsername(String username);
    public String getUsername();
    
    /** Set password for authentication */
    public void setPassword(String password);
    public String getPassword();
    
    /** Set connection timeout */
    public void setTimeout(int timeout);
    public int getTimeout();
    
    /** Set session timeout */
    public void setSession(int session);
    public int getSession();
    
    /** Set registry file cache path */
    public void setFile(String file);
    public String getFile();
    
    /** Enable/disable dynamic registration */
    public void setDynamic(Boolean dynamic);
    public Boolean getDynamic();
    
    /** Enable/disable registry */
    public void setRegister(Boolean register);
    public Boolean getRegister();
    
    /** Enable/disable subscription */
    public void setSubscribe(Boolean subscribe);
    public Boolean getSubscribe();
    
    /** Set service group */
    public void setGroup(String group);
    public String getGroup();
    
    /** Set service version */
    public void setVersion(String version);
    public String getVersion();
    
    /** Set retry period for failed operations */
    public void setRetryPeriod(int retryPeriod);
    public int getRetryPeriod();
    
    /** Enable/disable check on startup */
    public void setCheck(Boolean check);
    public Boolean getCheck();
}

/**
 * Service provider configuration
 * @param <T> Service interface type
 */
public class ServiceConfig<T> extends ServiceConfigBase<T> {
    public ServiceConfig();
    public ServiceConfig(Service service);
    
    /** Set service interface class */
    public void setInterface(Class<?> interfaceClass);
    public void setInterface(String interfaceName);
    public String getInterface();
    
    /** Set service implementation reference */
    public void setRef(T ref);
    public T getRef();
    
    /** Set service path */
    public void setPath(String path);
    public String getPath();
    
    /** Export service (make it available for consumers) */
    public synchronized void export();
    
    /** Unexport service */
    public synchronized void unexport();
    
    /** Check if service is exported */
    public boolean isExported();
    
    /** Check if service is unexported */
    public boolean isUnexported();
    
    /** Set service version */
    public void setVersion(String version);
    public String getVersion();
    
    /** Set service group */
    public void setGroup(String group);
    public String getGroup();
    
    /** Enable/disable deprecated */
    public void setDeprecated(Boolean deprecated);
    public Boolean getDeprecated();
    
    /** Set delay for service export (ms) */
    public void setDelay(Integer delay);
    public Integer getDelay();
    
    /** Set service weight for load balancing */
    public void setWeight(Integer weight);
    public Integer getWeight();
    
    /** Set document URL */
    public void setDocument(String document);
    public String getDocument();
    
    /** Enable/disable dynamic registration */
    public void setDynamic(Boolean dynamic);
    public Boolean getDynamic();
    
    /** Set access token for security */
    public void setToken(String token);
    public String getToken();
    
    /** Set access log configuration */
    public void setAccesslog(String accesslog);
    public String getAccesslog();
    
    /** Add method-specific configuration */
    public void setMethods(List<MethodConfig> methods);
    public List<MethodConfig> getMethods();
}

/**
 * Service consumer reference configuration
 * @param <T> Service interface type
 */
public class ReferenceConfig<T> extends ReferenceConfigBase<T> {
    public ReferenceConfig();
    public ReferenceConfig(Reference reference);
    
    /** Set service interface class */
    public void setInterface(Class<T> interfaceClass);
    public void setInterface(String interfaceName);
    public String getInterface();
    
    /** Get service proxy instance */
    public synchronized T get();
    
    /** Destroy reference and release resources */
    public synchronized void destroy();
    
    /** Set service URL directly (bypass registry) */
    public void setUrl(String url);
    public String getUrl();
    
    /** Set service version */
    public void setVersion(String version);
    public String getVersion();
    
    /** Set service group */
    public void setGroup(String group);
    public String getGroup();
    
    /** Set client type */
    public void setClient(String client);
    public String getClient();
    
    /** Enable/disable generic invocation */
    public void setGeneric(String generic);
    public String getGeneric();
    
    /** Enable/disable injvm optimization */
    public void setInjvm(Boolean injvm);
    public Boolean getInjvm();
    
    /** Enable/disable lazy initialization */
    public void setLazy(Boolean lazy);
    public Boolean getLazy();
    
    /** Enable/disable sticky sessions */
    public void setSticky(Boolean sticky);
    public Boolean getSticky();
    
    /** Set reconnect interval */
    public void setReconnect(String reconnect);
    public String getReconnect();
    
    /** Add method-specific configuration */
    public void setMethods(List<MethodConfig> methods);
    public List<MethodConfig> getMethods();
}

// Service provider configuration
ServiceConfig<GreeterService> service = new ServiceConfig<>();
service.setInterface(GreeterService.class);
service.setRef(new GreeterServiceImpl());
service.setVersion("1.0.0");
service.setGroup("default");
service.setDelay(5000); // 5 second delay
service.export();

// Service consumer configuration
ReferenceConfig<GreeterService> reference = new ReferenceConfig<>();
reference.setInterface(GreeterService.class);
reference.setVersion("1.0.0");
reference.setGroup("default");
reference.setTimeout(3000);
reference.setRetries(2);

GreeterService greeter = reference.get();
String result = greeter.sayHello("World");

/**
 * Method-level configuration for fine-grained control
 */
public class MethodConfig extends AbstractMethodConfig {
    public MethodConfig();
    public MethodConfig(Method method);
    
    /** Set method name */
    public void setName(String name);
    public String getName();
    
    /** Set method timeout (ms) */
    public void setTimeout(Integer timeout);
    public Integer getTimeout();
    
    /** Set retry count */
    public void setRetries(Integer retries);
    public Integer getRetries();
    
    /** Set load balancing algorithm */
    public void setLoadbalance(String loadbalance);
    public String getLoadbalance();
    
    /** Enable/disable async invocation */
    public void setAsync(Boolean async);
    public Boolean getAsync();
    
    /** Set async response handling */
    public void setSent(Boolean sent);
    public Boolean getSent();
    
    /** Set max concurrent active requests */
    public void setActives(Integer actives);
    public Integer getActives();
    
    /** Set execution limit per method */
    public void setExecutes(Integer executes);
    public Integer getExecutes();
    
    /** Enable/disable deprecated */
    public void setDeprecated(Boolean deprecated);
    public Boolean getDeprecated();
    
    /** Enable/disable sticky sessions */
    public void setSticky(Boolean sticky);
    public Boolean getSticky();
    
    /** Enable/disable return value */
    public void setReturn(Boolean isReturn);
    public Boolean getReturn();
    
    /** Set validation groups */
    public void setValidation(String validation);
    public String getValidation();
    
    /** Add argument-specific configuration */
    public void setArguments(List<ArgumentConfig> arguments);
    public List<ArgumentConfig> getArguments();
}

/**
 * Argument-level configuration
 */
public class ArgumentConfig extends AbstractConfig {
    public ArgumentConfig();
    public ArgumentConfig(Object argument);
    
    /** Set argument index */
    public void setIndex(Integer index);
    public Integer getIndex();
    
    /** Set argument type */
    public void setType(String type);
    public String getType();
    
    /** Enable/disable callback */
    public void setCallback(Boolean callback);
    public Boolean getCallback();
}

/**
 * Default configuration for service providers
 */
public class ProviderConfig extends AbstractServiceConfig {
    public ProviderConfig();
    
    /** Set default host */
    public void setHost(String host);
    public String getHost();
    
    /** Set default port */
    public void setPort(Integer port);
    public Integer getPort();
    
    /** Set default context path */
    public void setContextpath(String contextpath);
    public String getContextpath();
    
    /** Set default thread pool */
    public void setThreadpool(String threadpool);
    public String getThreadpool();
    
    /** Set default thread count */
    public void setThreads(Integer threads);
    public Integer getThreads();
    
    /** Set default IO threads */
    public void setIothreads(Integer iothreads);
    public Integer getIothreads();
    
    /** Set default connection limit */
    public void setAccepts(Integer accepts);
    public Integer getAccepts();
    
    /** Set default payload size */
    public void setPayload(Integer payload);
    public Integer getPayload();
}

/**
 * Default configuration for service consumers
 */
public class ConsumerConfig extends AbstractReferenceConfig {
    public ConsumerConfig();
    
    /** Set default timeout */
    public void setTimeout(Integer timeout);
    public Integer getTimeout();
    
    /** Set default retries */
    public void setRetries(Integer retries);
    public Integer getRetries();
    
    /** Set default load balancer */
    public void setLoadbalance(String loadbalance);
    public String getLoadbalance();
    
    /** Enable/disable async by default */
    public void setAsync(Boolean async);
    public Boolean getAsync();
    
    /** Set default connections per provider */
    public void setConnections(Integer connections);
    public Integer getConnections();
    
    /** Enable/disable generic invocation */
    public void setGeneric(String generic);
    public String getGeneric();
    
    /** Enable/disable check on startup */
    public void setCheck(Boolean check);
    public Boolean getCheck();
    
    /** Set default proxy type */
    public void setProxy(String proxy);
    public String getProxy();
    
    /** Set default owner */
    public void setOwner(String owner);
    public String getOwner();
}

/**
 * Configuration center settings
 */
public class ConfigCenterConfig extends AbstractConfig {
    public ConfigCenterConfig();
    
    /** Set config center address */
    public void setAddress(String address);
    public String getAddress();
    
    /** Set config center protocol */
    public void setProtocol(String protocol);
    public String getProtocol();
    
    /** Set config center port */
    public void setPort(Integer port);
    public Integer getPort();
    
    /** Set username */
    public void setUsername(String username);
    public String getUsername();
    
    /** Set password */
    public void setPassword(String password);
    public String getPassword();
    
    /** Set timeout */
    public void setTimeout(Long timeout);
    public Long getTimeout();
    
    /** Set config group */
    public void setGroup(String group);
    public String getGroup();
    
    /** Set config namespace */
    public void setNamespace(String namespace);
    public String getNamespace();
    
    /** Set cluster name */
    public void setCluster(String cluster);
    public String getCluster();
    
    /** Enable/disable check on startup */
    public void setCheck(Boolean check);
    public Boolean getCheck();
    
    /** Set config file */
    public void setConfigFile(String configFile);
    public String getConfigFile();
    
    /** Set application config file */
    public void setAppConfigFile(String appConfigFile);
    public String getAppConfigFile();
    
    /** Set highest priority */
    public void setHighestPriority(Boolean highestPriority);
    public Boolean getHighestPriority();
}

/**
 * Builder for ApplicationConfig
 */
public class ApplicationBuilder {
    public static ApplicationBuilder newBuilder();
    public ApplicationBuilder name(String name);
    public ApplicationBuilder version(String version);
    public ApplicationBuilder owner(String owner);
    public ApplicationBuilder organization(String organization);
    public ApplicationBuilder architecture(String architecture);
    public ApplicationBuilder environment(String environment);
    public ApplicationBuilder compiler(String compiler);
    public ApplicationBuilder logger(String logger);
    public ApplicationBuilder qosEnable(Boolean qosEnable);
    public ApplicationBuilder qosPort(Integer qosPort);
    public ApplicationConfig build();
}

/**
 * Builder for ProtocolConfig
 */
public class ProtocolBuilder {
    public static ProtocolBuilder newBuilder();
    public ProtocolBuilder name(String name);
    public ProtocolBuilder port(int port);
    public ProtocolBuilder host(String host);
    public ProtocolBuilder threads(int threads);
    public ProtocolBuilder payload(int payload);
    public ProtocolBuilder serialization(String serialization);
    public ProtocolConfig build();
}

import org.apache.dubbo.config.bootstrap.builders.*;

// Using builders for fluent configuration
ApplicationConfig app = ApplicationBuilder.newBuilder()
    .name("my-app")
    .version("1.0.0")
    .owner("dev-team")
    .qosEnable(true)
    .qosPort(22222)
    .build();

ProtocolConfig protocol = ProtocolBuilder.newBuilder()
    .name("dubbo")
    .port(20880)
    .threads(200)
    .serialization("hessian2")
    .build();

RegistryConfig registry = RegistryBuilder.newBuilder()
    .address("zookeeper://127.0.0.1:2181")
    .timeout(5000)
    .check(true)
    .build();