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/*
* #%L
* ACS AEM Commons Bundle
* %%
* Copyright (C) 2018 Adobe
* %%
* 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.
* #L%
*/
package com.adobe.acs.commons.remoteassets.impl;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.jcr.Session;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpHost;
import org.apache.http.client.fluent.Executor;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.ConfigurationPolicy;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.metatype.annotations.AttributeDefinition;
import org.osgi.service.metatype.annotations.Designate;
import org.osgi.service.metatype.annotations.ObjectClassDefinition;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.adobe.acs.commons.util.RequireAem;
/**
* Configuration service for Remote Asset feature.
*/
@Component(
configurationPolicy = ConfigurationPolicy.REQUIRE,
service = RemoteAssetsConfigImpl.class
)
@Designate(ocd=RemoteAssetsConfigImpl.Config.class)
public class RemoteAssetsConfigImpl {
private static final Logger LOG = LoggerFactory.getLogger(RemoteAssetsConfigImpl.class);
@ObjectClassDefinition(name = "ACS AEM Commons - Remote Assets - Config")
public @interface Config {
boolean DEFAULT_ALLOW_INSECURE = false;
String DEFAULT_EVENT_USER_DATA = "changedByWorkflowProcess";
int DEFAULT_RETRY_DELAY = 15;
int DEFAULT_SAVE_INTERVAL = 100;
@AttributeDefinition(
name = "Server",
description = "URL to remote server from which to fetch assets (e.g. https://dev-aem-author.client.com:4502)"
)
String server_url() default StringUtils.EMPTY;
@AttributeDefinition(
name = "Username",
description = "User to log into the remote server"
)
String server_user() default StringUtils.EMPTY;
@AttributeDefinition(
name = "Password",
description = "Password to log into the remote server"
)
String server_pass() default StringUtils.EMPTY;
@AttributeDefinition(
name = "Allow Insecure Connection",
description = "Allow non-https connection to remote assets server, "
+ "allowing potential compromise of connection credentials"
)
boolean server_insecure() default DEFAULT_ALLOW_INSECURE;
@AttributeDefinition(
name = "Tag Sync Paths",
description = "Paths to sync tags from the remote server (e.g. /content/cq:tags/client)",
cardinality = Integer.MAX_VALUE
)
String[] tag_paths() default {};
@AttributeDefinition(
name = "Asset Sync Paths",
description = "Paths to sync assets from the remote server (e.g. /content/dam)",
cardinality = Integer.MAX_VALUE
)
String[] dam_paths() default {};
@AttributeDefinition(
name = "Failure Retry Delay (in minutes)",
description = "Number of minutes the server will wait to attempt to sync a remote"
+ "asset that failed a sync attempt (minimum 1)"
)
int retry_delay() default DEFAULT_RETRY_DELAY;
@AttributeDefinition(
name = "Number of Assets to Sync Before Saving",
description = "Number of asset nodes to sync before saving and refreshing the session during a node "
+ "sync. The lower the number, the longer the sync will take (default 100)"
)
int save_interval() default DEFAULT_SAVE_INTERVAL;
@AttributeDefinition(
name = "Event User Data",
description = "The event user data that will be set during all JCR manipulations performed by "
+ "remote assets. This can be used in workflow launchers that listen to DAM paths (such as "
+ "for DAM Update Assets) to exclude unnecessary processing such as rendition generation."
)
String event_user_data() default DEFAULT_EVENT_USER_DATA;
@AttributeDefinition(
name = "Whitelisted Service Users",
description = "Service users that are allowed to trigger remote asset binary syncs. By default, service "
+ "user activity never triggers an asset binary sync.",
cardinality = Integer.MAX_VALUE
)
String[] whitelisted_service_users() default {};
}
private String server = StringUtils.EMPTY;
private String username = StringUtils.EMPTY;
private String password = StringUtils.EMPTY;
private boolean allowInsecureRemote = false;
private List tagSyncPaths = new ArrayList<>();
private List damSyncPaths = new ArrayList<>();
private Integer retryDelay;
private Integer saveInterval;
private String eventUserData = StringUtils.EMPTY;
private Set whitelistedServiceUsers = new HashSet<>();
private Executor remoteAssetsHttpExecutor;
// Disable this feature on AEM as a Cloud Service
@Reference(target="(distribution=classic)")
RequireAem requireAem;
@Reference
private ResourceResolverFactory resourceResolverFactory;
/**
* Method to run on activation.
*/
@Activate
protected final void activate(RemoteAssetsConfigImpl.Config config) {
this.server = config.server_url();
if (StringUtils.isBlank(this.server)) {
throw new IllegalArgumentException("Remote server must be specified");
}
this.username = config.server_user();
if (StringUtils.isBlank(this.username)) {
throw new IllegalArgumentException("Remote server username must be specified");
}
this.password = config.server_pass();
if (StringUtils.isBlank(this.password)) {
throw new IllegalArgumentException("Remote server password must be specified");
}
this.allowInsecureRemote = config.server_insecure();
this.tagSyncPaths = Stream.of(ObjectUtils.defaultIfNull(config.tag_paths(), new String[]{}))
.filter(item -> StringUtils.isNotBlank(item))
.collect(Collectors.toList());
this.damSyncPaths = Stream.of(ObjectUtils.defaultIfNull(config.dam_paths(), new String[]{}))
.filter(item -> StringUtils.isNotBlank(item))
.collect(Collectors.toList());
this.retryDelay = config.retry_delay();
this.saveInterval = config.save_interval();
this.eventUserData = config.event_user_data();
this.whitelistedServiceUsers = Stream.of(ObjectUtils.defaultIfNull(config.whitelisted_service_users(), new String[]{}))
.filter(item -> StringUtils.isNotBlank(item))
.collect(Collectors.toSet());
buildRemoteHttpExecutor();
}
/**
* @return String
*/
public String getServer() {
return this.server;
}
/**
* @return String
*/
public String getUsername() {
return this.username;
}
/**
* @return String
*/
public String getPassword() {
return this.password;
}
/**
* @return List
*/
public List getTagSyncPaths() {
return this.tagSyncPaths;
}
/**
* @return List
*/
public List getDamSyncPaths() {
return this.damSyncPaths;
}
/**
* @return Integer
*/
public Integer getRetryDelay() {
return this.retryDelay;
}
/**
* @return Integer
*/
public Integer getSaveInterval() {
return this.saveInterval;
}
/**
* @return String
*/
public String getEventUserData() {
return this.eventUserData;
}
/**
* @return String
*/
public Set getWhitelistedServiceUsers() {
return this.whitelistedServiceUsers;
}
/**
* @return Executor
*/
public Executor getRemoteAssetsHttpExecutor() {
return remoteAssetsHttpExecutor;
}
/**
*/
public ResourceResolver getResourceResolver() {
try {
Map userParams = new HashMap<>();
userParams.put(ResourceResolverFactory.SUBSERVICE, RemoteAssets.SERVICE_NAME);
ResourceResolver resourceResolver = this.resourceResolverFactory.getServiceResourceResolver(userParams);
Session session = resourceResolver.adaptTo(Session.class);
if (StringUtils.isNotBlank(this.getEventUserData())) {
session.getWorkspace().getObservationManager().setUserData(this.getEventUserData());
}
return resourceResolver;
} catch (Exception e) {
LOG.error("Remote assets functionality cannot be enabled - service user login failed");
throw new RemoteAssetsServiceException(e);
}
}
private void buildRemoteHttpExecutor() {
URL url;
try {
url = new URL(this.server);
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Remote server address is malformed");
}
if (!url.getProtocol().equalsIgnoreCase("https")) {
if (this.allowInsecureRemote) {
LOG.warn("Remote Assets connection is not HTTPS - authentication username and password will be"
+ " communicated in CLEAR TEXT. This configuration is NOT recommended, as it may allow"
+ " credentials to be compromised!");
} else {
throw new IllegalArgumentException("Remote server address must be HTTPS so that credentials"
+ " cannot be compromised. As an alternative, you may configure remote assets to allow"
+ " use of a non-HTTPS connection, allowing connection credentials to potentially be"
+ " compromised AT YOUR OWN RISK.");
}
}
HttpHost host = new HttpHost(url.getHost(), url.getPort(), url.getProtocol());
this.remoteAssetsHttpExecutor = Executor.newInstance()
.auth(host, username, password)
.authPreemptive(host);
}
}
