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SingularityLDAPDatastore.java
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SingularityLDAPDatastore.java
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package com.hubspot.singularity.auth.datastore;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.apache.directory.api.ldap.model.cursor.EntryCursor;
import org.apache.directory.api.ldap.model.entry.Entry;
import org.apache.directory.api.ldap.model.exception.LdapException;
import org.apache.directory.api.ldap.model.message.SearchScope;
import org.apache.directory.ldap.client.api.DefaultPoolableLdapConnectionFactory;
import org.apache.directory.ldap.client.api.LdapConnection;
import org.apache.directory.ldap.client.api.LdapConnectionConfig;
import org.apache.directory.ldap.client.api.LdapConnectionPool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Optional;
import com.google.common.base.Strings;
import com.google.common.base.Throwables;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.hubspot.mesos.JavaUtils;
import com.hubspot.singularity.SingularityUser;
import com.hubspot.singularity.config.LDAPConfiguration;
import com.hubspot.singularity.config.SingularityConfiguration;
import com.hubspot.singularity.sentry.SingularityExceptionNotifier;
@Singleton
public class SingularityLDAPDatastore implements SingularityAuthDatastore {
private static final Logger LOG = LoggerFactory.getLogger(SingularityLDAPDatastore.class);
private final LdapConnectionPool connectionPool;
private final LDAPConfiguration configuration;
private final SingularityExceptionNotifier exceptionNotifier;
private static LdapConnectionPool createConnectionPool(LDAPConfiguration configuration) throws IOException {
final LdapConnectionConfig config = new LdapConnectionConfig();
config.setLdapHost(configuration.getHostname());
config.setLdapPort(configuration.getPort());
config.setName(configuration.getBindDn());
config.setCredentials(configuration.getBindPassword());
final DefaultPoolableLdapConnectionFactory factory = new DefaultPoolableLdapConnectionFactory(config);
final LdapConnectionPool pool = new LdapConnectionPool(factory);
pool.setTestOnBorrow(configuration.isPoolTestOnBorrow());
pool.setTestOnReturn(configuration.isPoolTestOnReturn());
pool.setTestWhileIdle(configuration.isPoolTestWhileIdle());
pool.setMaxActive(configuration.getPoolMaxActive());
pool.setMaxIdle(configuration.getPoolMaxIdle());
pool.setMinIdle(configuration.getPoolMinIdle());
pool.setMaxWait(configuration.getPoolMaxWait());
switch (configuration.getPoolWhenExhaustedAction()) {
case BLOCK:
pool.setWhenExhaustedAction(LdapConnectionPool.WHEN_EXHAUSTED_BLOCK);
break;
case FAIL:
pool.setWhenExhaustedAction(LdapConnectionPool.WHEN_EXHAUSTED_FAIL);
break;
case GROW:
pool.setWhenExhaustedAction(LdapConnectionPool.WHEN_EXHAUSTED_GROW);
break;
default:
pool.setWhenExhaustedAction(LdapConnectionPool.DEFAULT_WHEN_EXHAUSTED_ACTION);
}
return pool;
}
private final Optional<Cache<String, Optional<SingularityUser>>> ldapCache;
@Inject
public SingularityLDAPDatastore(SingularityConfiguration configuration,
SingularityExceptionNotifier exceptionNotifier) throws IOException {
checkArgument(configuration.getLdapConfigurationOptional().isPresent(), "LDAP configuration not present");
this.connectionPool = createConnectionPool(configuration.getLdapConfigurationOptional().get());
this.configuration = configuration.getLdapConfigurationOptional().get();
this.exceptionNotifier = exceptionNotifier;
if (configuration.isLdapCacheEnabled()) {
Cache<String, Optional<SingularityUser>> cache = CacheBuilder.newBuilder()
.expireAfterWrite(configuration.getLdapCacheExpireMillis(), TimeUnit.MILLISECONDS)
.maximumSize(configuration.getLdapCacheSize())
.build();
ldapCache = Optional.of(cache);
} else {
ldapCache = Optional.absent();
}
}
@Override
public Optional<Boolean> isHealthy() {
try {
final LdapConnection connection = connectionPool.getConnection();
try {
if (connection.isConnected() && connection.isAuthenticated()) {
connection.bind();
try {
return Optional.of(true);
} finally {
connection.unBind();
}
}
} finally {
connectionPool.releaseConnection(connection);
}
} catch (LdapException e) {
LOG.warn("LdapException caught when checking health", e);
exceptionNotifier.notify(String.format("LdapException caught when checking health (%s)", e.getMessage()), e);
}
return Optional.of(false);
}
@Override
public Optional<SingularityUser> getUser(String user) {
if (configuration.isStripUserEmailDomain()) {
user = user.split("@")[0];
}
if (ldapCache.isPresent()) {
Optional<SingularityUser> cachedResult = ldapCache.get().getIfPresent(user);
if (cachedResult != null) {
return cachedResult;
}
}
final Set<String> groups = new HashSet<>();
try {
final LdapConnection connection = connectionPool.getConnection();
try {
checkState(connection.isConnected(), "not connected");
checkState(connection.isAuthenticated(), "not authenticated");
connection.bind();
final long startTime = System.currentTimeMillis();
try {
final EntryCursor userCursor = connection.search(configuration.getUserBaseDN(),
String.format(configuration.getUserFilter(), user),
SearchScope.ONELEVEL, configuration.getUserNameAttribute(), configuration.getUserEmailAttribute());
if (!userCursor.next()) {
if (ldapCache.isPresent()) {
ldapCache.get().put(user, Optional.<SingularityUser> absent());
}
return Optional.absent();
}
final Entry userEntry = userCursor.get();
// get group info
final EntryCursor cursor = connection.search(configuration.getGroupBaseDN(),
String.format(configuration.getGroupFilter(), user),
configuration.getGroupSearchScope(), configuration.getGroupNameAttribute());
while (cursor.next()) {
groups.add(cursor.get().get(configuration.getGroupNameAttribute()).getString());
}
Optional<SingularityUser> result = Optional.of(new SingularityUser(user, Optional.fromNullable(Strings.emptyToNull(userEntry.get(configuration.getUserNameAttribute()).getString())),
Optional.fromNullable(Strings.emptyToNull(userEntry.get(configuration.getUserEmailAttribute()).getString())), groups));
if (ldapCache.isPresent()) {
ldapCache.get().put(user, result);
}
return result;
} finally {
LOG.trace("Loaded {}'s user data in {}", user, JavaUtils.duration(startTime));
connection.unBind();
}
} finally {
connectionPool.releaseConnection(connection);
}
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
}