strolch/agent/src/main/java/li/strolch/agent/api/ComponentContainer.java

127 lines
4.0 KiB
Java

/*
* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
*
* 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 li.strolch.agent.api;
import java.util.Set;
import li.strolch.exception.StrolchException;
import li.strolch.privilege.base.PrivilegeException;
import li.strolch.privilege.model.Certificate;
import li.strolch.runtime.StrolchConstants;
import li.strolch.runtime.privilege.PrivilegeHandler;
import li.strolch.runtime.privilege.PrivilegedRunnable;
import li.strolch.runtime.privilege.PrivilegedRunnableWithResult;
/**
* Strolch's Container for all its components
*
* @author Robert von Burg <eitch@eitchnet.ch>
*/
public interface ComponentContainer {
StrolchAgent getAgent();
ComponentState getState();
/**
* Returns true if the given component is registered on this container
*
* @param clazz
* the type of component to check for
*
* @return true if the component is available
*/
boolean hasComponent(Class<?> clazz);
/**
* Returns the reference to the {@link StrolchComponent} with the given name, if it exists. If it does not exist, an
* {@link IllegalArgumentException} is thrown
*
* @param clazz
* the type of component to return
*
* @return the component with the given name
*
* @throws IllegalArgumentException
* if the component does not exist
*/
<T> T getComponent(Class<T> clazz) throws IllegalArgumentException;
PrivilegeHandler getPrivilegeHandler() throws IllegalArgumentException;
Set<Class<?>> getComponentTypes();
Set<String> getRealmNames();
/**
* Returns the {@link StrolchRealm} with the given name. To get the default realm, use the constant {@link
* StrolchConstants#DEFAULT_REALM}.
*
* @param realm
* the name of the {@link StrolchRealm} to return
*
* @return the {@link StrolchRealm} with the given name
*
* @throws StrolchException
* if the {@link StrolchRealm} does not exist with the given name
*/
StrolchRealm getRealm(String realm) throws StrolchException;
/**
* Returns the default {@link StrolchRealm} for the user with the given {@link Certificate}. This is done by
* querying the property {@link StrolchConstants#PROP_REALM} from the certificate.
*
* @param certificate
* the {@link Certificate} from which to retrieve the name of the {@link StrolchRealm} to return
*
* @return the {@link StrolchRealm}
*
* @throws StrolchException
* if the user does not have a {@link StrolchConstants#PROP_REALM} property configured, and the default realm is
* not configured, or if the realm does not exist with the found value
*/
StrolchRealm getRealm(Certificate certificate) throws StrolchException;
/**
* Performs the given {@link PrivilegedRunnable} as the privileged system user {@link
* StrolchConstants#SYSTEM_USER_AGENT}
*
* @param runnable
* the runnable to perform
*
* @throws PrivilegeException
* if the given username is not allowed to perform the action
* @throws Exception
* if anything else goes wrong during execution
*/
void runAsAgent(PrivilegedRunnable runnable) throws PrivilegeException, Exception;
/**
* Performs the given {@link PrivilegedRunnable} as the privileged system user {@link
* StrolchConstants#SYSTEM_USER_AGENT}
*
* @param runnable
* the runnable to perform
*
* @return the result
*
* @throws PrivilegeException
* if the given username is not allowed to perform the action
* @throws Exception
* if anything else goes wrong during execution
*/
<T> T runAsAgentWithResult(PrivilegedRunnableWithResult<T> runnable) throws PrivilegeException, Exception;
}