UpgradeContentCleanup.java
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/*
* Decompiled with CFR 0_118.
*
* Could not load the following classes:
* javax.jcr.Node
* javax.jcr.NodeIterator
* javax.jcr.Session
* javax.jcr.Workspace
* javax.jcr.query.Query
* javax.jcr.query.QueryManager
* javax.jcr.query.QueryResult
* org.apache.felix.scr.annotations.Activate
* org.apache.felix.scr.annotations.Component
* org.apache.felix.scr.annotations.ConfigurationPolicy
* org.apache.felix.scr.annotations.Deactivate
* org.apache.felix.scr.annotations.Property
* org.apache.felix.scr.annotations.PropertyUnbounded
* org.apache.felix.scr.annotations.Reference
* org.apache.sling.commons.osgi.PropertiesUtil
* org.apache.sling.jcr.api.SlingRepository
* org.apache.sling.launchpad.api.StartupHandler
* org.apache.sling.launchpad.api.StartupMode
* org.osgi.framework.BundleContext
* org.osgi.framework.InvalidSyntaxException
* org.osgi.framework.ServiceEvent
* org.osgi.framework.ServiceListener
* org.osgi.service.component.ComponentContext
* org.slf4j.Logger
* org.slf4j.LoggerFactory
*/
package com.adobe.cq.upgrades.cleanup.impl;
import java.util.Arrays;
import java.util.Dictionary;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.Session;
import javax.jcr.Workspace;
import javax.jcr.query.Query;
import javax.jcr.query.QueryManager;
import javax.jcr.query.QueryResult;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.ConfigurationPolicy;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.PropertyUnbounded;
import org.apache.felix.scr.annotations.Reference;
import org.apache.sling.commons.osgi.PropertiesUtil;
import org.apache.sling.jcr.api.SlingRepository;
import org.apache.sling.launchpad.api.StartupHandler;
import org.apache.sling.launchpad.api.StartupMode;
import org.osgi.framework.BundleContext;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Component(configurationFactory=1, policy=ConfigurationPolicy.REQUIRE, metatype=1, label="Content Cleanup Component", description="Deletes content while upgrading, before the package manager starts")
public class UpgradeContentCleanup
implements ServiceListener {
private final Logger log;
@Reference
protected SlingRepository repository;
@Reference
private StartupHandler startupHandler;
private boolean isListening;
private final AtomicInteger execCounter;
public static final String JOB_TOPIC = "com/adobe/cq/upgrade/cleanup/delete";
public static final String JOB_PATH = "path";
@Property(unbounded=PropertyUnbounded.ARRAY, label="Snapshot path regular expressions", description="Regular expressions that define which paths are allowed to be deleted")
public static final String PROP_DELETE_PATH_REGEXPS = "delete.path.regexps";
private Pattern[] pathPatterns;
@Property(label="Delete selection query", description="SQL2 query that selects candidates for deletion")
public static final String PROP_DELETE_QUERY = "delete.sql2.query";
private String deleteQuery;
public UpgradeContentCleanup() {
this.log = LoggerFactory.getLogger(this.getClass());
this.execCounter = new AtomicInteger();
}
@Activate
protected void activate(ComponentContext ctx) throws InvalidSyntaxException {
this.isListening = false;
StartupMode sm = this.startupHandler.getMode();
if (sm != StartupMode.UPDATE) {
this.log.info("Startup mode is {}, nothing to do", (Object)sm);
return;
}
this.log.info("Startup mode is {}, cleanup will be done", (Object)sm);
String vaultServiceClass = "org.apache.jackrabbit.vault.packaging.Packaging";
String filter = "(objectClass=org.apache.jackrabbit.vault.packaging.Packaging)";
ctx.getBundleContext().addServiceListener((ServiceListener)this, "(objectClass=org.apache.jackrabbit.vault.packaging.Packaging)");
this.isListening = true;
this.deleteQuery = PropertiesUtil.toString(ctx.getProperties().get("delete.sql2.query"), (String)null);
String[] expr = PropertiesUtil.toStringArray(ctx.getProperties().get("delete.path.regexps"), (String[])null);
this.pathPatterns = new Pattern[expr.length];
for (int i = 0; i < expr.length; ++i) {
this.pathPatterns[i] = Pattern.compile(expr[i]);
}
this.log.info("deleteQuery={}", (Object)this.deleteQuery);
this.log.info("deletable paths regexp={}", Arrays.asList(this.pathPatterns));
}
@Deactivate
protected void deactivate(ComponentContext ctx) {
if (this.isListening) {
ctx.getBundleContext().removeServiceListener((ServiceListener)this);
}
}
public void serviceChanged(ServiceEvent event) {
if (event.getType() == 1) {
this.doCleanup();
}
}
private void deleteAsynchronously(final String path) {
this.log.info("Starting background job to delete {}", (Object)path);
Thread t = new Thread("Delete " + path){
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
public void run() {
block7 : {
Session s = null;
try {
s = UpgradeContentCleanup.this.repository.loginAdministrative(null);
if (s.nodeExists(path)) {
s.getNode(path).remove();
s.save();
UpgradeContentCleanup.this.log.info("Deleted {}", (Object)path);
break block7;
}
UpgradeContentCleanup.this.log.warn("Path to delete not found: {}", (Object)path);
}
catch (Exception e) {
UpgradeContentCleanup.this.log.warn("Exception while deleting " + path, (Throwable)e);
}
finally {
if (s != null) {
s.logout();
}
}
}
}
};
t.setDaemon(true);
t.start();
}
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
private void doCleanup() {
block12 : {
try {
if (this.execCounter.incrementAndGet() != 1) {
this.log.info("Concurrent execution detected, won't do anything");
break block12;
}
Session s = this.repository.loginAdministrative(null);
try {
Query q = s.getWorkspace().getQueryManager().createQuery(this.deleteQuery, "JCR-SQL2");
NodeIterator it = q.execute().getNodes();
int deleted = 0;
int ignored = 0;
String targetFolder = "pre-upgrade-cleanup-" + System.currentTimeMillis();
String targetPath = s.getNode("/tmp").addNode(targetFolder).getPath();
s.save();
while (it.hasNext()) {
Node n = it.nextNode();
if (this.okToRemove(n.getPath())) {
String moveTo = targetPath + "/" + deleted;
this.log.info("Moving {} to {}", (Object)n.getPath(), (Object)moveTo);
s.getWorkspace().move(n.getPath(), moveTo);
++deleted;
continue;
}
++ignored;
}
this.log.info("{} nodes deleted, {} ignored", (Object)deleted, (Object)ignored);
if (deleted > 0) {
this.deleteAsynchronously(targetPath);
}
}
finally {
s.save();
s.logout();
}
}
catch (Exception e) {
this.log.warn("Exception in doCleanup()", (Throwable)e);
}
finally {
this.execCounter.decrementAndGet();
}
}
}
private boolean okToRemove(String path) {
for (Pattern p : this.pathPatterns) {
if (!p.matcher(path).matches()) continue;
this.log.debug("Path {} matches {}, ok to remove", (Object)path, (Object)p);
return true;
}
this.log.debug("Path {} does not match any pattern, won't remove", (Object)path);
return false;
}
protected void bindRepository(SlingRepository slingRepository) {
this.repository = slingRepository;
}
protected void unbindRepository(SlingRepository slingRepository) {
if (this.repository == slingRepository) {
this.repository = null;
}
}
protected void bindStartupHandler(StartupHandler startupHandler) {
this.startupHandler = startupHandler;
}
protected void unbindStartupHandler(StartupHandler startupHandler) {
if (this.startupHandler == startupHandler) {
this.startupHandler = null;
}
}
}