com.marklogic.client.DatabaseClientFactory Maven / Gradle / Ivy
/*
* Copyright 2012-2015 MarkLogic Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.marklogic.client;
import java.io.Serializable;
import java.util.Set;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.marklogic.client.extra.httpclient.HttpClientConfigurator;
import com.marklogic.client.impl.DatabaseClientImpl;
import com.marklogic.client.impl.HandleFactoryRegistryImpl;
import com.marklogic.client.impl.JerseyServices;
import com.marklogic.client.io.marker.ContentHandle;
import com.marklogic.client.io.marker.ContentHandleFactory;
/**
* A Database Client Factory configures a database client for making
* database requests.
*/
public class DatabaseClientFactory {
static final private Logger logger = LoggerFactory.getLogger(DatabaseClientFactory.class);
static private ClientConfigurator clientConfigurator;
static private HandleFactoryRegistry handleRegistry =
HandleFactoryRegistryImpl.newDefault();
/**
* Authentication enumerates the methods for verifying a user and
* password with the database.
*/
public enum Authentication {
/**
* Minimal security unless used with SSL.
*/
BASIC,
/**
* Moderate security without SSL.
*/
DIGEST;
/**
* Returns the enumerated value for the case-insensitive name.
* @param name the name of the enumerated value
* @return the enumerated value
*/
static public Authentication valueOfUncased(String name) {
return Authentication.valueOf(name.toUpperCase());
}
}
/**
* An SSLHostnameVerifier checks whether a hostname is acceptable
* during SSL authentication.
*/
public interface SSLHostnameVerifier {
/**
* The ANY SSLHostnameVerifier allows any hostname, which
* can be useful during initial development but is not
* recommended for production.
*/
final static public Builtin ANY = new Builtin("ANY");
/**
* The COMMON SSLHostnameVerifier applies common rules
* for checking hostnames during SSL authentication (similar
* to org.apache.http.conn.ssl.BrowserCompatHostnameVerifier).
*/
final static public Builtin COMMON = new Builtin("COMMON");
/**
* The STRICT SSLHostnameVerifier applies strict rules
* for checking hostnames during SSL authentication (similar
* to org.apache.http.conn.ssl.StrictHostnameVerifier).
*/
final static public Builtin STRICT = new Builtin("STRICT");
/**
* Checks a hostname during SSL authentication.
* @param hostname the name of the checked host
* @param cns common names for the checked host
* @param subjectAlts alternative subject names for the checked host
*/
public void verify(String hostname, String[] cns, String[] subjectAlts) throws SSLException;
/**
* Builtin supports builtin implementations of SSLHostnameVerifier.
*/
public class Builtin implements SSLHostnameVerifier {
private String name;
private Builtin(String name) {
super();
this.name = name;
}
@Override
public void verify(String hostname, String[] cns, String[] subjectAlts) throws SSLException {
throw new MarkLogicInternalException(
"SSLHostnameVerifier.Builtin called directly instead of passed as parameter");
}
/**
* Returns the name of the built-in.
* @return the built-in name
*/
public String getName() {
return name;
}
}
}
/**
* A HandleFactoryRegistry associates IO representation classes
* with handle factories. The API uses the registry to create
* a content handle to act as an adapter for a supported
* IO representation class. The IO class and its instances can
* then be passed directly to convenience methods.
* The default registry associates the content handles provided
* by the API and the supported IO representation classes.
* Create instances of this interface only if you need to modify
* the default registry.
* @see DatabaseClientFactory#getHandleRegistry()
* @see DatabaseClientFactory.Bean#getHandleRegistry()
*/
public interface HandleFactoryRegistry {
/**
* Associates a factory for content handles with the classes
* for IO representations known to the factory.
* @param factory a factory for creating content handle instances
*/
public void register(ContentHandleFactory factory);
/**
* Associates a factory for content handles with the specified classes
* for IO representations.
* @param factory a factory for creating content handle instances
* @param ioClasses the IO classes for which the factory should create handles
*/
public void register(ContentHandleFactory factory, Class... ioClasses);
/**
* Returns whether the registry associates the class with a factory.
* @param ioClass the class for an IO representation
* @return true if a factory has been registered
*/
public boolean isRegistered(Class ioClass);
/**
* Returns the classes for the IO representations for which a factory
* has been registered.
* @return the IO classes
*/
public Set> listRegistered();
/**
* Creates a ContentHandle if the registry has a factory
* for the class of the IO representation.
* @param type the class for an IO representation
* @return a content handle or null if no factory supports the class
*/
public ContentHandle makeHandle(Class type);
/**
* Removes the classes from the registry
* @param ioClasses one or more registered classes for an IO representation
*/
public void unregister(Class... ioClasses);
/**
* Create a copy of the current registry
* @return a copy of the current registry
*/
public HandleFactoryRegistry copy();
}
/**
* A ClientConfigurator provides custom configuration for the communication library
* used to sending client requests and receiving server responses.
* @see com.marklogic.client.extra.httpclient.HttpClientConfigurator
* @param the configurable class for the communication library
*/
public interface ClientConfigurator {
/**
* Called as the last step in configuring the communication library.
* @param client the configurable object for the communication library
*/
public void configure(T client);
}
private DatabaseClientFactory() {
}
/**
* Creates a client to access the database by means of a REST server
* without any authentication. Such clients can be convenient for
* experimentation but should not be used in production.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port) {
return newClient(host, port, null, null, null, null, null, null);
}
/**
* Creates a client to access the database by means of a REST server
* without any authentication. Such clients can be convenient for
* experimentation but should not be used in production.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param database the database to access (default: configured database for the REST server)
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String database) {
return newClient(host, port, database, null, null, null, null, null);
}
/**
* Creates a client to access the database by means of a REST server.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param user the user with read, write, or administrative privileges
* @param password the password for the user
* @param type the type of authentication applied to the request
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String user, String password, Authentication type) {
return newClient(host, port, null, user, password, type, null, null);
}
/**
* Creates a client to access the database by means of a REST server.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param database the database to access (default: configured database for the REST server)
* @param user the user with read, write, or administrative privileges
* @param password the password for the user
* @param type the type of authentication applied to the request
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String database, String user, String password, Authentication type) {
return newClient(host, port, database, user, password, type, null, null);
}
/**
* Creates a client to access the database by means of a REST server.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param user the user with read, write, or administrative privileges
* @param password the password for the user
* @param type the type of authentication applied to the request
* @param context the SSL context for authenticating with the server
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String user, String password, Authentication type, SSLContext context) {
return newClient(host, port, null, user, password, type, context, SSLHostnameVerifier.COMMON);
}
/**
* Creates a client to access the database by means of a REST server.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param database the database to access (default: configured database for the REST server)
* @param user the user with read, write, or administrative privileges
* @param password the password for the user
* @param type the type of authentication applied to the request
* @param context the SSL context for authenticating with the server
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String database, String user, String password, Authentication type, SSLContext context) {
return newClient(host, port, database, user, password, type, context, SSLHostnameVerifier.COMMON);
}
/**
* Creates a client to access the database by means of a REST server.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param user the user with read, write, or administrative privileges
* @param password the password for the user
* @param type the type of authentication applied to the request
* @param context the SSL context for authenticating with the server
* @param verifier a callback for checking hostnames
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String user, String password, Authentication type, SSLContext context, SSLHostnameVerifier verifier) {
DatabaseClientImpl client = newClientImpl(host, port, null, user, password, type, context, verifier);
client.setHandleRegistry(getHandleRegistry().copy());
return client;
}
/**
* Creates a client to access the database by means of a REST server.
*
* @param host the host with the REST server
* @param port the port for the REST server
* @param database the database to access (default: configured database for the REST server)
* @param user the user with read, write, or administrative privileges
* @param password the password for the user
* @param type the type of authentication applied to the request
* @param context the SSL context for authenticating with the server
* @param verifier a callback for checking hostnames
* @return a new client for making database requests
*/
static public DatabaseClient newClient(String host, int port, String database, String user, String password, Authentication type, SSLContext context, SSLHostnameVerifier verifier) {
DatabaseClientImpl client = newClientImpl(host, port, database, user, password, type, context, verifier);
client.setHandleRegistry(getHandleRegistry().copy());
return client;
}
static private DatabaseClientImpl newClientImpl(String host, int port, String database, String user, String password, Authentication type, SSLContext context, SSLHostnameVerifier verifier) {
logger.debug("Creating new database client for server at "+host+":"+port);
JerseyServices services = new JerseyServices();
services.connect(host, port, database, user, password, type, context, verifier);
if (clientConfigurator != null) {
((HttpClientConfigurator) clientConfigurator).configure(
services.getClientImplementation()
);
}
return new DatabaseClientImpl(services);
}
/**
* Returns the default registry with factories for creating handles
* as adapters for IO representations. To create custom registries,
* use
* @return the default registry
*/
static public HandleFactoryRegistry getHandleRegistry() {
return handleRegistry;
}
/**
* Removes the current registered associations so the
* handle registry is empty.
*/
static public void clearHandleRegistry() {
handleRegistry = new HandleFactoryRegistryImpl();
}
/**
* Initializes a handle registry with the default associations
* between the content handles provided by the API and the supported
* IO representation classes. Use this method only after clearing
* or overwriting associations in the handle registry.
*/
static public void registerDefaultHandles() {
HandleFactoryRegistryImpl.registerDefaults(getHandleRegistry());
}
/**
* Adds a listener that provides custom configuration when a communication library
* is created.
* @see com.marklogic.client.extra.httpclient.HttpClientConfigurator
* @param configurator the listener for configuring the communication library
*/
static public void addConfigurator(ClientConfigurator configurator) {
if (!HttpClientConfigurator.class.isInstance(configurator)) {
throw new IllegalArgumentException(
"Configurator must implement HttpClientConfigurator"
);
}
clientConfigurator = configurator;
}
/**
* A Database Client Factory Bean provides an object for specifying configuration
* before creating a client to make database requests.
*
* For instance, a Spring configuration file might resemble the following
* example:
*
* <bean name="databaseClientFactory"
* class="com.marklogic.client.DatabaseClientFactory.Bean">
* <property name="host" value="localhost"/>
* <property name="port" value="8012"/>
* <property name="user" value="rest-writer-user"/>
* <property name="password" value="rest-writer-password"/>
* <property name="authenticationValue" value="digest"/>
* </bean>
*
* <bean name="databaseClient"
* class="com.marklogic.client.DatabaseClient"
* factory-bean="databaseClientFactory"
* factory-method="newClient"/>
*
*/
static public class Bean implements Serializable {
private static final long serialVersionUID = 1L;
private String host;
private int port;
private String database;
private String user;
private String password;
private Authentication authentication;
private HandleFactoryRegistry handleRegistry =
HandleFactoryRegistryImpl.newDefault();
transient private SSLContext context;
transient private SSLHostnameVerifier verifier;
/**
* Zero-argument constructor for bean applications. Other
* applications can use the static newClient() factory methods
* of DatabaseClientFactory.
*/
public Bean() {
super();
}
/**
* Returns the host for clients created with a
* DatabaseClientFactory.Bean object.
* @return the client host
*/
public String getHost() {
return host;
}
/**
* Specifies the host for clients created from a
* DatabaseClientFactory.Bean object.
* @param host the client host
*/
public void setHost(String host) {
this.host = host;
}
/**
* Returns the port for clients created with a
* DatabaseClientFactory.Bean object.
* @return the client port
*/
public int getPort() {
return port;
}
/**
* Specifies the port for clients created with a
* DatabaseClientFactory.Bean object.
* @param port the client port
*/
public void setPort(int port) {
this.port = port;
}
/**
* Returns the user authentication for clients created with a
* DatabaseClientFactory.Bean object.
* @return the user
*/
public String getUser() {
return user;
}
/**
* Specifies the user authentication for clients created with a
* DatabaseClientFactory.Bean object.
* @param user the user
*/
public void setUser(String user) {
this.user = user;
}
/**
* Returns the password authentication for clients created with a
* DatabaseClientFactory.Bean object.
* @return the password
*/
public String getPassword() {
return password;
}
/**
* Specifies the password authentication for clients created with a
* DatabaseClientFactory.Bean object.
* @param password the password
*/
public void setPassword(String password) {
this.password = password;
}
/**
* Returns the authentication type for clients created with a
* DatabaseClientFactory.Bean object.
* @return the authentication type
*/
public Authentication getAuthentication() {
return authentication;
}
/**
* Specifies the authentication type for clients created with a
* DatabaseClientFactory.Bean object.
* @param authentication the authentication type
*/
public void setAuthentication(Authentication authentication) {
this.authentication = authentication;
}
/**
* Specifies the authentication type for clients created with a
* DatabaseClientFactory.Bean object based on a string value.
* @param authentication the authentication type
*/
public void setAuthenticationValue(String authentication) {
this.authentication = Authentication.valueOfUncased(authentication);
}
/**
* Returns the SSLContext for SSL clients created with a
* DatabaseClientFactory.Bean object.
* @return the SSL context
*/
public SSLContext getContext() {
return context;
}
/**
* Specifies the SSLContext for clients created with a
* DatabaseClientFactory.Bean object that authenticate with SSL.
* @param context the SSL context
*/
public void setContext(SSLContext context) {
this.context = context;
}
/**
* Returns the host verifier for clients created with a
* DatabaseClientFactory.Bean object.
* @return the host verifier
*/
public SSLHostnameVerifier getVerifier() {
return verifier;
}
/**
* Specifies the host verifier for clients created with a
* DatabaseClientFactory.Bean object that verify hosts for
* additional security.
* @param verifier the host verifier
*/
public void setVerifier(SSLHostnameVerifier verifier) {
this.verifier = verifier;
}
/**
* Returns the registry for associating
* IO representation classes with handle factories.
* @return the registry instance
*/
public HandleFactoryRegistry getHandleRegistry() {
return handleRegistry;
}
/**
* Removes the current registered associations so the
* handle registry is empty.
*/
public void clearHandleRegistry() {
this.handleRegistry = new HandleFactoryRegistryImpl();
}
/**
* Initializes a handle registry with the default associations
* between the content handles provided by the API and the supported
* IO representation classes. Use this method only after clearing
* or overwriting associations in the handle registry.
*/
public void registerDefaultHandles() {
HandleFactoryRegistryImpl.registerDefaults(getHandleRegistry());
}
/**
* Creates a client for bean applications based on the properties.
* Other applications can use the static newClient() factory methods
* of DatabaseClientFactory.
* The client accesses the database by means of a REST server.
* @return a new client for making database requests
*/
public DatabaseClient newClient() {
DatabaseClientImpl client = newClientImpl(host, port, database, user, password, authentication, context, verifier);
client.setHandleRegistry(getHandleRegistry().copy());
return client;
}
}
}