OffloadingAgentManager.java
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/*
* Decompiled with CFR 0_118.
*
* Could not load the following classes:
* com.adobe.granite.crypto.CryptoSupport
* org.apache.felix.scr.annotations.Component
* org.apache.felix.scr.annotations.Properties
* org.apache.felix.scr.annotations.Property
* org.apache.felix.scr.annotations.Reference
* org.apache.felix.scr.annotations.Service
* org.apache.sling.api.resource.LoginException
* org.apache.sling.api.resource.ModifiableValueMap
* org.apache.sling.api.resource.PersistenceException
* org.apache.sling.api.resource.Resource
* org.apache.sling.api.resource.ResourceResolver
* org.apache.sling.api.resource.ResourceResolverFactory
* org.apache.sling.commons.osgi.PropertiesUtil
* org.apache.sling.commons.threads.ThreadPool
* org.apache.sling.commons.threads.ThreadPoolManager
* org.apache.sling.discovery.ClusterView
* org.apache.sling.discovery.InstanceDescription
* org.apache.sling.discovery.TopologyEvent
* org.apache.sling.discovery.TopologyEvent$Type
* org.apache.sling.discovery.TopologyEventListener
* org.apache.sling.discovery.TopologyView
* org.apache.sling.discovery.commons.InstancesDiff
* org.apache.sling.discovery.commons.InstancesDiff$InstanceCollection
* org.osgi.service.component.ComponentContext
* org.slf4j.Logger
* org.slf4j.LoggerFactory
*/
package com.adobe.granite.offloading.impl.transporter;
import com.adobe.granite.crypto.CryptoSupport;
import com.adobe.granite.offloading.impl.util.OffloadingUtil;
import java.net.InetAddress;
import java.util.Collection;
import java.util.Date;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.ModifiableValueMap;
import org.apache.sling.api.resource.PersistenceException;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.apache.sling.commons.osgi.PropertiesUtil;
import org.apache.sling.commons.threads.ThreadPool;
import org.apache.sling.commons.threads.ThreadPoolManager;
import org.apache.sling.discovery.ClusterView;
import org.apache.sling.discovery.InstanceDescription;
import org.apache.sling.discovery.TopologyEvent;
import org.apache.sling.discovery.TopologyEventListener;
import org.apache.sling.discovery.TopologyView;
import org.apache.sling.discovery.commons.InstancesDiff;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Component(immediate=1, label="%offloading.agentmanager.label", description="%offloading.agentmanager.description", metatype=1)
@Service(value={TopologyEventListener.class})
@Properties(value={@Property(name="offloading.agentmanager.enabled", boolValue={0}, label="Automatic Agent Management", description="Allows to enable/disable the automatic creation replication agents for offloading")})
public class OffloadingAgentManager
implements TopologyEventListener {
private static final Logger LOG = LoggerFactory.getLogger(OffloadingAgentManager.class);
static final String SCR_PROP_NAME_ENABLED = "offloading.agentmanager.enabled";
static final boolean SCR_PROP_DEFAULT_ENABLED = false;
private static final String SUB_SERVICE_NAME = "agentmanager";
private boolean enabled = false;
private static final String AGENTS_ROOT_PATH = "/etc/replication/agents.author";
private static final String REPLICATION_AGENT_NAME = "Offloading Replication Agent";
private static final String REVERSE_REPLICATION_AGENT_NAME = "Offloading Reverse Replication Agent";
private static final String REPLICATION_AGENT_NAME_FORMAT = "offloading_%s";
private static final String REVERSE_REPLICATION_AGENT_NAME_FORMAT = "offloading_reverse_%s";
private static final String OUTBOX_REPLICATION_AGENT_NAME = "Offloading Outbox Replication Agent";
private static final String OUTBOX_REPLICATION_AGENT_RESOURCE_NAME = "offloading_outbox";
private static final String REPLICATION_AGENT_SLING_RESOURCE_TYPE = "cq/replication/components/agent";
private static final String REVERSE_REPLICATION_AGENT_SLING_RESOURCE_TYPE = "cq/replication/components/revagent";
private static final String REPLICATION_AGENT_HTTP_METHOD = "POST";
private static final String REVERSE_REPLICATION_AGENT_HTTP_METHOD = "GET";
private static final int NETWORK_TEST_TIMEOUT_SECONDS = 3;
private static final String USER = "admin";
private static final String PASSWORD = "admin";
private ThreadPool eventProcessingThreadPool;
@Reference
private ThreadPoolManager threadPoolManager;
@Reference
private ResourceResolverFactory rrf;
@Reference
private CryptoSupport cryptoSupport;
public void handleTopologyEvent(TopologyEvent topologyEvent) {
this.processTopologyEvent(topologyEvent);
}
private void processTopologyEvent(final TopologyEvent topologyEvent) {
if (this.enabled && TopologyEvent.Type.TOPOLOGY_CHANGING != topologyEvent.getType() && (TopologyEvent.Type.TOPOLOGY_CHANGED == topologyEvent.getType() || TopologyEvent.Type.TOPOLOGY_INIT == topologyEvent.getType())) {
Runnable task = new Runnable(){
@Override
public void run() {
InstancesDiff instancesDiff = new InstancesDiff(topologyEvent);
InstancesDiff.InstanceCollection removed = instancesDiff.removed();
InstancesDiff.InstanceCollection added = instancesDiff.added();
added.isNotInClusterView(topologyEvent.getNewView().getLocalInstance().getClusterView());
for (InstanceDescription instance2 : removed.get()) {
LOG.info("Instance {} was removed from the topology.", (Object)instance2.getSlingId());
OffloadingAgentManager.this.configureAgentsEnablement(instance2, false);
}
for (InstanceDescription instance2 : added.get()) {
LOG.info("Instance {} was added to the topology.", (Object)instance2.getSlingId());
OffloadingAgentManager.this.createReplicationAgentsForInstance(instance2);
OffloadingAgentManager.this.configureAgentsEnablement(instance2, true);
}
}
};
this.eventProcessingThreadPool.execute(task);
}
}
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
private void createReplicationAgentsForInstance(InstanceDescription instanceDescription) {
if (instanceDescription != null) {
ResourceResolver rr = null;
try {
rr = this.getServiceResolver();
Resource agentsRoot = rr.getResource("/etc/replication/agents.author");
if (agentsRoot != null) {
this.createReplicationAgent(AgentType.REPLICATION, rr, agentsRoot, instanceDescription);
this.createReplicationAgent(AgentType.REVERSE_REPLICATION, rr, agentsRoot, instanceDescription);
}
}
catch (LoginException e) {
LOG.error("Cannot obtain service resolver.", (Throwable)e);
}
finally {
if (rr != null) {
rr.close();
}
}
}
}
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
private void configureAgentsEnablement(InstanceDescription instanceDescription, boolean agentEnablement) {
if (instanceDescription != null) {
ResourceResolver rr = null;
try {
rr = this.getServiceResolver();
Resource agentsRoot = rr.getResource("/etc/replication/agents.author");
if (agentsRoot != null) {
ModifiableValueMap agentConfig;
ModifiableValueMap agentConfig2;
String slingID = instanceDescription.getSlingId();
Resource replicationAgent = agentsRoot.getChild(String.format("offloading_%s", slingID) + "/" + "jcr:content");
if (replicationAgent != null && (agentConfig2 = (ModifiableValueMap)replicationAgent.adaptTo(ModifiableValueMap.class)) != null) {
agentConfig2.put((Object)"enabled", (Object)agentEnablement);
LOG.info("Deactivated agent {} for instance {}.", (Object)replicationAgent.getParent().getPath(), (Object)slingID);
}
Resource reverseReplicationAgent = agentsRoot.getChild(String.format("offloading_reverse_%s", slingID) + "/" + "jcr:content");
if (replicationAgent != null && (agentConfig = (ModifiableValueMap)reverseReplicationAgent.adaptTo(ModifiableValueMap.class)) != null) {
agentConfig.put((Object)"enabled", (Object)agentEnablement);
LOG.info("Deactivated agent {} for instance {}.", (Object)reverseReplicationAgent.getParent().getPath(), (Object)slingID);
}
rr.commit();
}
}
catch (LoginException e) {
LOG.error("Cannot obtain service resolver.", (Throwable)e);
}
catch (PersistenceException e) {
LOG.error("Cannot commit changes for replication agents for instance " + instanceDescription.getSlingId(), (Throwable)e);
}
finally {
if (rr != null) {
rr.close();
}
}
}
}
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
private void createOutboxReplicationAgent() {
ResourceResolver rr = null;
try {
rr = this.getServiceResolver();
Resource agentsRoot = rr.getResource("/etc/replication/agents.author");
if (agentsRoot != null && rr.getResource(agentsRoot, "offloading_outbox") == null) {
HashMap<String, Object> agentResourceProperties = new HashMap<String, Object>();
agentResourceProperties.put("jcr:primaryType", "cq:Page");
agentResourceProperties.put("jcr:createdBy", rr.getUserID());
agentResourceProperties.put("jcr:created", new Date());
Resource agentResource = rr.create(agentsRoot, "offloading_outbox", agentResourceProperties);
HashMap<String, Object> agentProperties = new HashMap<String, Object>();
agentProperties.put("enabled", true);
agentProperties.put("jcr:title", "Offloading Outbox Replication Agent");
agentProperties.put("noVersioning", true);
agentProperties.put("transportUri", "repo://var/replication/outbox");
agentProperties.put("triggerSpecific", true);
agentProperties.put("agentType", "default");
agentProperties.put("sling:resourceType", "cq/replication/components/agent");
rr.create(agentResource, "jcr:content", agentProperties);
rr.commit();
LOG.info("Created outbox replication agent {}.", (Object)agentResource.getPath());
}
}
catch (Exception e) {
LOG.error("Cannot create an outbox replication agent.", (Throwable)e);
}
finally {
if (rr != null) {
rr.close();
}
}
}
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
private void configureOutboxAgentEnablement(boolean agentEnablement) {
ResourceResolver rr = null;
try {
Resource outboxAgent;
rr = this.getServiceResolver();
Resource agentsRoot = rr.getResource("/etc/replication/agents.author");
if (agentsRoot != null && (outboxAgent = rr.getResource(agentsRoot, "offloading_outbox/jcr:content")) != null) {
ModifiableValueMap agentProperties = (ModifiableValueMap)outboxAgent.adaptTo(ModifiableValueMap.class);
agentProperties.put((Object)"enabled", (Object)agentEnablement);
rr.commit();
}
}
catch (Exception e) {
LOG.error("Cannot " + (agentEnablement ? "enable" : "disable") + " outbox replication agent.", (Throwable)e);
}
finally {
if (rr != null) {
rr.close();
}
}
}
private void createReplicationAgent(AgentType type, ResourceResolver rr, Resource parent, InstanceDescription instanceDescription) {
String agentResourceName = null;
if (type == AgentType.REPLICATION) {
agentResourceName = String.format("offloading_%s", instanceDescription.getSlingId());
} else if (type == AgentType.REVERSE_REPLICATION) {
agentResourceName = String.format("offloading_reverse_%s", instanceDescription.getSlingId());
}
if (rr.getResource(parent, agentResourceName) == null) {
HashMap<String, Object> agentProperties = new HashMap<String, Object>();
String jcrTitle = null;
String protocolHTTPMethod = null;
String endpoint = null;
String slingResourceType = null;
boolean reverseReplication = false;
boolean triggerSpecific = false;
String agentType = null;
Set<String> endpoints = OffloadingUtil.expandCSV(instanceDescription.getProperty("org.apache.sling.instance.endpoints"));
for (String s : endpoints) {
String address = OffloadingUtil.getHostFromEndpoint(s);
try {
if (!InetAddress.getByName(address).isReachable(3000)) continue;
endpoint = s;
break;
}
catch (Exception e) {
LOG.error("Unknown host " + address + " for instance " + instanceDescription.getSlingId());
continue;
}
}
if (endpoint == null) {
LOG.warn("Skipping creating replication agent for instance " + instanceDescription.getSlingId() + ": no accessible endpoint " + "detected.");
return;
}
switch (type) {
case REPLICATION: {
jcrTitle = "Offloading Replication Agent";
protocolHTTPMethod = "POST";
slingResourceType = "cq/replication/components/agent";
reverseReplication = false;
agentType = "default";
triggerSpecific = true;
break;
}
case REVERSE_REPLICATION: {
jcrTitle = "Offloading Reverse Replication Agent";
protocolHTTPMethod = "GET";
slingResourceType = "cq/replication/components/revagent";
reverseReplication = true;
agentType = "reverse";
triggerSpecific = false;
break;
}
}
agentProperties.put("enabled", true);
agentProperties.put("jcr:title", jcrTitle);
agentProperties.put("protocolHTTPMethod", protocolHTTPMethod);
agentProperties.put("sling:resourceType", slingResourceType);
agentProperties.put("transportUri", endpoint + "bin/receive?sling:authRequestLogin=1");
agentProperties.put("transportUser", "admin");
agentProperties.put("jcr:primaryType", "nt:unstructured");
agentProperties.put("reverseReplication", reverseReplication);
agentProperties.put("agentType", agentType);
agentProperties.put("triggerSpecific", triggerSpecific);
try {
agentProperties.put("transportPassword", this.cryptoSupport.protect("admin"));
HashMap<String, Object> agentResourceProperties = new HashMap<String, Object>();
agentResourceProperties.put("jcr:primaryType", "cq:Page");
agentResourceProperties.put("jcr:createdBy", rr.getUserID());
agentResourceProperties.put("jcr:created", new Date());
Resource agentResource = rr.create(parent, agentResourceName, agentResourceProperties);
rr.create(agentResource, "jcr:content", agentProperties);
rr.commit();
LOG.info("Created {} agent for instance {}.", (Object)type.value(), (Object)instanceDescription.getSlingId());
}
catch (Exception e) {
LOG.error("Cannot create replication agent.", (Throwable)e);
}
}
}
private ResourceResolver getServiceResolver() throws LoginException {
HashMap<String, String> authenticationInfo = new HashMap<String, String>();
authenticationInfo.put("sling.service.subservice", "agentmanager");
return this.rrf.getServiceResourceResolver(authenticationInfo);
}
protected void activate(ComponentContext componentContext) {
Dictionary properties = componentContext.getProperties();
this.enabled = PropertiesUtil.toBoolean(properties.get("offloading.agentmanager.enabled"), (boolean)false);
if (this.enabled) {
this.eventProcessingThreadPool = this.threadPoolManager.get("Offloading Agent Manager event processing");
this.createOutboxReplicationAgent();
this.configureOutboxAgentEnablement(true);
}
}
protected void deactivate(ComponentContext componentContext) {
if (this.enabled) {
this.configureOutboxAgentEnablement(false);
if (this.eventProcessingThreadPool != null) {
this.threadPoolManager.release(this.eventProcessingThreadPool);
this.eventProcessingThreadPool = null;
}
}
}
protected void bindThreadPoolManager(ThreadPoolManager threadPoolManager) {
this.threadPoolManager = threadPoolManager;
}
protected void unbindThreadPoolManager(ThreadPoolManager threadPoolManager) {
if (this.threadPoolManager == threadPoolManager) {
this.threadPoolManager = null;
}
}
protected void bindRrf(ResourceResolverFactory resourceResolverFactory) {
this.rrf = resourceResolverFactory;
}
protected void unbindRrf(ResourceResolverFactory resourceResolverFactory) {
if (this.rrf == resourceResolverFactory) {
this.rrf = null;
}
}
protected void bindCryptoSupport(CryptoSupport cryptoSupport) {
this.cryptoSupport = cryptoSupport;
}
protected void unbindCryptoSupport(CryptoSupport cryptoSupport) {
if (this.cryptoSupport == cryptoSupport) {
this.cryptoSupport = null;
}
}
private static enum AgentType {
REPLICATION("replication"),
REVERSE_REPLICATION("reverse replication");
private String type;
private AgentType(String type) {
this.type = type;
}
public String value() {
return this.type;
}
}
}