/**
* Copyright (c) 2009, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* 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 org.wso2.carbon.proxyadmin;
import org.apache.axis2.deployment.DeploymentEngine;
import org.apache.axis2.engine.AxisConfiguration;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.config.xml.MultiXMLConfigurationBuilder;
import org.apache.synapse.core.axis2.ProxyService;
import org.apache.synapse.core.SynapseEnvironment;
import org.apache.synapse.deployers.SynapseArtifactDeploymentStore;
import org.osgi.service.component.ComponentContext;
import org.wso2.carbon.mediation.initializer.ServiceBusConstants;
import org.wso2.carbon.mediation.initializer.ServiceBusUtils;
import org.wso2.carbon.mediation.initializer.services.SynapseEnvironmentService;
import org.wso2.carbon.mediation.initializer.services.SynapseRegistrationsService;
import org.wso2.carbon.proxyadmin.observer.ProxyObserver;
import org.wso2.carbon.proxyadmin.util.ConfigHolder;
import org.wso2.carbon.registry.core.service.RegistryService;
import org.wso2.carbon.registry.core.exceptions.RegistryException;
import org.wso2.carbon.service.mgt.ServiceAdmin;
import org.wso2.carbon.utils.multitenancy.MultitenantConstants;
import java.io.File;
import java.util.Map;
import java.util.Set;
/**
* @scr.component name="org.wso2.carbon.proxyadmin" immediate="true"
* @scr.reference name="synapse.env.service"
* interface="org.wso2.carbon.mediation.initializer.services.SynapseEnvironmentService"
* cardinality="1..n" policy="dynamic"
* bind="setSynapseEnvironmentService" unbind="unsetSynapseEnvironmentService"
* @scr.reference name="service.admin.service" interface="org.wso2.carbon.service.mgt.ServiceAdmin"
* cardinality="1..1" policy="dynamic"
* bind="setServiceadminService" unbind="unsetServiceAdminService"
* @scr.reference name="registry.service"
* interface="org.wso2.carbon.registry.core.service.RegistryService"
* cardinality="1..1" policy="dynamic"
* bind="setRegistryService" unbind="unsetRegistryService"
* @scr.reference name="synapse.registrations.service"
* interface="org.wso2.carbon.mediation.initializer.services.SynapseRegistrationsService"
* cardinality="1..n" policy="dynamic" bind="setSynapseRegistrationsService"
* unbind="unsetSynapseRegistrationsService"
*/
@SuppressWarnings({"UnusedDeclaration"})
public class ProxyAdminServiceComponent {
private static final Log log = LogFactory.getLog(ProxyAdminServiceComponent.class);
private boolean initialized = false;
protected void activate(ComponentContext context) {
try {
initialized = true;
SynapseEnvironmentService synEnvService =
ConfigHolder.getInstance().getSynapseEnvironmentService(
MultitenantConstants.SUPER_TENANT_ID);
if (synEnvService != null) {
AxisConfiguration axisConf = synEnvService.getConfigurationContext().
getAxisConfiguration();
try {
ProxyObserver proxyObserver = new ProxyObserver(
synEnvService.getSynapseEnvironment().getSynapseConfiguration(),
ConfigHolder.getInstance().getRegistryService().
getConfigSystemRegistry());
ConfigHolder.getInstance().addProxyObserver(
MultitenantConstants.SUPER_TENANT_ID, proxyObserver);
axisConf.addObservers(proxyObserver);
registerDeployer(synEnvService.getConfigurationContext().getAxisConfiguration(),
synEnvService.getSynapseEnvironment());
} catch (ProxyAdminException e) {
log.error("Error while initializing the proxy service observer. " +
"Proxy admin component may be unstable.", e);
}
} else {
log.warn("Cannot register the proxy service observer. The axis service " +
"representing the proxy service might not be in sync with the proxy");
}
} catch (Throwable t) {
log.fatal("Error occurred while activating the Proxy Admin", t);
}
}
private void registerDeployer(AxisConfiguration axisConfig, SynapseEnvironment synEnv)
throws ProxyAdminException {
DeploymentEngine deploymentEngine = (DeploymentEngine) axisConfig.getConfigurator();
SynapseArtifactDeploymentStore deploymentStore =
synEnv.getSynapseConfiguration().getArtifactDeploymentStore();
String synapseConfigPath = ServiceBusUtils.getSynapseConfigAbsPath(
synEnv.getServerContextInformation());
String proxyDirPath = synapseConfigPath
+ File.separator + MultiXMLConfigurationBuilder.PROXY_SERVICES_DIR;
for (ProxyService proxyService : synEnv.getSynapseConfiguration().getProxyServices()) {
if (proxyService.getFileName() != null) {
deploymentStore.addRestoredArtifact(
proxyDirPath + File.separator + proxyService.getFileName());
}
}
deploymentEngine.addDeployer(
new ProxyServiceDeployer(), proxyDirPath, ServiceBusConstants.ARTIFACT_EXTENSION);
}
protected void deactivate(ComponentContext context) {
Set<Map.Entry<Integer, SynapseEnvironmentService>> entrySet =
ConfigHolder.getInstance().getSynapseEnvironmentServices().entrySet();
for (Map.Entry<Integer, SynapseEnvironmentService> entry : entrySet) {
unregistryDeployer(
entry.getValue().getConfigurationContext().getAxisConfiguration(),
entry.getValue().getSynapseEnvironment());
}
}
/**
* Here we receive an event about the creation of a SynapseEnvironment. If this is
* SuperTenant we have to wait until all the other constraints are met and actual
* initialization is done in the activate method. Otherwise we have to do the activation here.
*
* @param synapseEnvironmentService SynapseEnvironmentService which contains information
* about the new Synapse Instance
*/
protected void setSynapseEnvironmentService(
SynapseEnvironmentService synapseEnvironmentService) {
boolean alreadyCreated = ConfigHolder.getInstance().getSynapseEnvironmentServices().
containsKey(synapseEnvironmentService.getTenantId());
ConfigHolder.getInstance().addSynapseEnvironmentService(
synapseEnvironmentService.getTenantId(),
synapseEnvironmentService);
if (initialized) {
int tenantId = synapseEnvironmentService.getTenantId();
AxisConfiguration axisConfiguration = synapseEnvironmentService.
getConfigurationContext().getAxisConfiguration();
ProxyObserver observer;
if (!alreadyCreated) {
try {
registerDeployer(
synapseEnvironmentService.getConfigurationContext().getAxisConfiguration(),
synapseEnvironmentService.getSynapseEnvironment());
observer = new ProxyObserver(
synapseEnvironmentService.getSynapseEnvironment().getSynapseConfiguration(),
ConfigHolder.getInstance().getRegistryService().
getConfigSystemRegistry(tenantId));
axisConfiguration.addObservers(observer);
ConfigHolder.getInstance().addProxyObserver(tenantId, observer);
} catch (ProxyAdminException e) {
log.error("Error while initializing the proxy admin.", e);
} catch (RegistryException e) {
log.error("Error while initializing the proxy admin.", e);
}
} else {
observer = ConfigHolder.getInstance().getProxyObsever(tenantId);
if (observer != null) {
observer.setSynapseConfig(synapseEnvironmentService.getSynapseEnvironment().
getSynapseConfiguration());
}
}
}
}
/**
* Here we receive an event about Destroying a SynapseEnvironment. This can be the super tenant
* destruction or a tenant destruction. But in this method we don't do anything
*
* @param synapseEnvironmentService synapseEnvironment
*/
protected void unsetSynapseEnvironmentService(
SynapseEnvironmentService synapseEnvironmentService) {
ConfigHolder.getInstance().removeSynapseEnvironmentService(
synapseEnvironmentService.getTenantId());
}
protected void setSynapseRegistrationsService(
SynapseRegistrationsService synapseRegistrationsService) {
}
protected void unsetSynapseRegistrationsService(
SynapseRegistrationsService synapseRegistrationsService) {
int tenantId = synapseRegistrationsService.getTenantId();
if (ConfigHolder.getInstance().getSynapseEnvironmentServices().containsKey(tenantId)) {
SynapseEnvironment env = ConfigHolder.getInstance().
getSynapseEnvironmentService(tenantId).getSynapseEnvironment();
ConfigHolder.getInstance().removeSynapseEnvironmentService(
synapseRegistrationsService.getTenantId());
AxisConfiguration axisConfig = synapseRegistrationsService.getConfigurationContext().
getAxisConfiguration();
if (axisConfig != null) {
unregistryDeployer(axisConfig, env);
}
}
}
/**
* Un-registers the Proxy Deployer.
*
* @param axisConfig AxisConfiguration to which this deployer belongs
* @param synapseEnvironment SynapseEnvironment to which this deployer belongs
*/
private void unregistryDeployer(AxisConfiguration axisConfig,
SynapseEnvironment synapseEnvironment) {
DeploymentEngine deploymentEngine = (DeploymentEngine) axisConfig.getConfigurator();
String synapseConfigPath = ServiceBusUtils.getSynapseConfigAbsPath(
synapseEnvironment.getServerContextInformation());
String proxyDirPath = synapseConfigPath
+ File.separator + MultiXMLConfigurationBuilder.PROXY_SERVICES_DIR;
deploymentEngine.removeDeployer(
proxyDirPath, ServiceBusConstants.ARTIFACT_EXTENSION);
}
protected void setServiceadminService(ServiceAdmin serviceAdmin) {}
protected void unsetServiceAdminService(ServiceAdmin serviceAdmin) {}
protected void setRegistryService(RegistryService regService) {
if (log.isDebugEnabled()) {
log.debug("RegistryService bound to the ESB initialization process");
}
ConfigHolder.getInstance().setRegistryService(regService);
}
protected void unsetRegistryService(RegistryService regService) {
if (log.isDebugEnabled()) {
log.debug("RegistryService unbound from the ESB environment");
}
ConfigHolder.getInstance().setRegistryService(null);
}
}