Java tutorial
/* * Copyright 2014 EUBrazilCC (EU?Brazil Cloud Connect) * * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by * the European Commission - subsequent versions of the EUPL (the "Licence"); * You may not use this work except in compliance with the Licence. * You may obtain a copy of the Licence at: * * http://ec.europa.eu/idabc/eupl * * Unless required by applicable law or agreed to in writing, software * distributed under the Licence is distributed on an "AS IS" basis, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the Licence for the specific language governing permissions and * limitations under the Licence. * * This product combines work with different licenses. See the "NOTICE" text * file for details on the various modules and licenses. * The "NOTICE" text file is part of the distribution. Any derivative works * that you distribute must include a readable copy of the "NOTICE" text file. */ package eu.eubrazilcc.lvl.storage.oauth2.dao; import static com.google.common.base.Preconditions.checkArgument; import static com.google.common.collect.Lists.transform; import static eu.eubrazilcc.lvl.storage.mongodb.MongoDBConnector.MONGODB_CONN; import static eu.eubrazilcc.lvl.storage.mongodb.MongoDBHelper.toProjection; import static eu.eubrazilcc.lvl.storage.mongodb.jackson.MongoDBJsonMapper.JSON_MAPPER; import static eu.eubrazilcc.lvl.storage.transform.SameTransientStore.startStore; import static org.apache.commons.lang.StringUtils.isNotBlank; import static org.slf4j.LoggerFactory.getLogger; import java.io.IOException; import java.io.OutputStream; import java.util.List; import javax.annotation.Nullable; import org.apache.commons.lang.mutable.MutableLong; import org.bson.types.ObjectId; import org.slf4j.Logger; import com.fasterxml.jackson.annotation.JsonProperty; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.annotation.JsonDeserialize; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.google.common.base.Function; import com.google.common.collect.ImmutableMap; import com.mongodb.BasicDBObject; import com.mongodb.DBObject; import com.mongodb.util.JSON; import eu.eubrazilcc.lvl.core.Sorting; import eu.eubrazilcc.lvl.core.geojson.Point; import eu.eubrazilcc.lvl.core.geojson.Polygon; import eu.eubrazilcc.lvl.storage.dao.BaseDAO; import eu.eubrazilcc.lvl.storage.dao.WriteResult; import eu.eubrazilcc.lvl.storage.mongodb.jackson.ObjectIdDeserializer; import eu.eubrazilcc.lvl.storage.mongodb.jackson.ObjectIdSerializer; import eu.eubrazilcc.lvl.storage.oauth2.AuthCode; import eu.eubrazilcc.lvl.storage.transform.SameTransientStore; /** * Authentication DAO. * @author Erik Torres <ertorser@upv.es> */ public enum AuthCodeDAO implements BaseDAO<String, AuthCode> { AUTH_CODE_DAO; private final static Logger LOGGER = getLogger(AuthCodeDAO.class); public static final String COLLECTION = "authz_codes"; public static final String DB_PREFIX = "authCode."; public static final String PRIMARY_KEY = DB_PREFIX + "code"; private AuthCodeDAO() { MONGODB_CONN.createIndex(PRIMARY_KEY, COLLECTION); } @Override public WriteResult<AuthCode> insert(final AuthCode authCode) { // remove transient fields from the element before saving it to the database final SameTransientStore<AuthCode> store = startStore(authCode); final DBObject obj = map(store); final String id = MONGODB_CONN.insert(obj, COLLECTION); // restore transient fields store.restore(); return new WriteResult.Builder<AuthCode>().id(id).build(); } @Override public WriteResult<AuthCode> insert(final AuthCode authCode, final boolean ignoreDuplicates) { throw new UnsupportedOperationException( "Inserting ignoring duplicates is not currently supported in this class"); } @Override public AuthCode update(final AuthCode authCode) { // remove transient fields from the element before saving it to the database final SameTransientStore<AuthCode> store = startStore(authCode); final DBObject obj = map(store); MONGODB_CONN.update(obj, key(authCode.getCode()), COLLECTION); // restore transient fields store.restore(); return null; } @Override public void delete(final String code) { MONGODB_CONN.remove(key(code), COLLECTION); } @Override public List<AuthCode> findAll() { return list(0, Integer.MAX_VALUE, null, null, null, null); } @Override public AuthCode find(final String code) { final BasicDBObject obj = MONGODB_CONN.get(key(code), COLLECTION); return parseBasicDBObjectOrNull(obj); } @Override public List<AuthCode> list(final int start, final int size, final @Nullable ImmutableMap<String, String> filter, final @Nullable Sorting sorting, final @Nullable ImmutableMap<String, Boolean> projection, final @Nullable MutableLong count) { // execute the query in the database (unsupported filter) return transform( MONGODB_CONN.list(sortCriteria(), COLLECTION, start, size, null, toProjection(projection), count), new Function<BasicDBObject, AuthCode>() { @Override public AuthCode apply(final BasicDBObject obj) { return parseBasicDBObject(obj); } }); } @Override public long count() { return MONGODB_CONN.count(COLLECTION); } @Override public List<AuthCode> getNear(final Point point, final double maxDistance) { throw new UnsupportedOperationException("Geospatial searches are not currently supported in this class"); } @Override public List<AuthCode> geoWithin(final Polygon polygon) { throw new UnsupportedOperationException("Geospatial searches are not currently supported in this class"); } @Override public void stats(final OutputStream os) throws IOException { MONGODB_CONN.stats(os, COLLECTION); } private BasicDBObject key(final String key) { return new BasicDBObject(PRIMARY_KEY, key); } private BasicDBObject sortCriteria() { return new BasicDBObject(PRIMARY_KEY, 1); } private AuthCode parseBasicDBObject(final BasicDBObject obj) { return map(obj).getAuthCode(); } private AuthCode parseBasicDBObjectOrNull(final BasicDBObject obj) { AuthCode authCode = null; if (obj != null) { final AuthCodeEntity entity = map(obj); if (entity != null) { authCode = entity.getAuthCode(); } } return authCode; } private DBObject map(final SameTransientStore<AuthCode> store) { DBObject obj = null; try { obj = (DBObject) JSON.parse(JSON_MAPPER.writeValueAsString(new AuthCodeEntity(store.purge()))); } catch (JsonProcessingException e) { LOGGER.error("Failed to write authN code to DB object", e); } return obj; } private AuthCodeEntity map(final BasicDBObject obj) { AuthCodeEntity entity = null; try { entity = JSON_MAPPER.readValue(obj.toString(), AuthCodeEntity.class); } catch (IOException e) { LOGGER.error("Failed to read authN code from DB object", e); } return entity; } /** * Checks whether or not the specified secret (access code) was previously stored * and is currently valid (not expired). * @param code - the secret associated to the access code * @return {@code true} only if the provided secret (access code) is found in the * storage and is currently valid (not expired). Otherwise, returns * {@code false}. */ public boolean isValid(final String code) { checkArgument(isNotBlank(code), "Uninitialized or invalid code"); final AuthCode authCode = find(code); return (authCode != null && authCode.getCode() != null && code.equals(authCode.getCode()) && (authCode.getIssuedAt() + authCode.getExpiresIn()) > (System.currentTimeMillis() / 1000l)); } /** * AuthCode entity. * @author Erik Torres <ertorser@upv.es> */ public static class AuthCodeEntity { @JsonSerialize(using = ObjectIdSerializer.class) @JsonDeserialize(using = ObjectIdDeserializer.class) @JsonProperty("_id") private ObjectId id; private AuthCode authCode; public AuthCodeEntity() { } public AuthCodeEntity(final AuthCode authCode) { setAuthCode(authCode); } public ObjectId getId() { return id; } public void setId(final ObjectId id) { this.id = id; } public AuthCode getAuthCode() { return authCode; } public void setAuthCode(final AuthCode authCode) { this.authCode = authCode; } } }