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Added option for KeycloakAuthProvider to locally register user
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113 changes: 113 additions & 0 deletions
113
...cloak/src/main/java/de/fraunhofer/iosb/ilt/frostserver/auth/keycloak/DatabaseHandler.java
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| @@ -0,0 +1,113 @@ | ||
| /* | ||
| * Copyright (C) 2023 Fraunhofer Institut IOSB, Fraunhoferstr. 1, D 76131 | ||
| * Karlsruhe, Germany. | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package de.fraunhofer.iosb.ilt.frostserver.auth.keycloak; | ||
|
|
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| import static de.fraunhofer.iosb.ilt.frostserver.auth.keycloak.KeycloakAuthProvider.TAG_USERNAME_COLUMN; | ||
| import static de.fraunhofer.iosb.ilt.frostserver.auth.keycloak.KeycloakAuthProvider.TAG_USER_TABLE; | ||
| import static de.fraunhofer.iosb.ilt.frostserver.persistence.pgjooq.utils.ConnectionUtils.TAG_DB_URL; | ||
|
|
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| import de.fraunhofer.iosb.ilt.frostserver.persistence.pgjooq.utils.ConnectionUtils; | ||
| import de.fraunhofer.iosb.ilt.frostserver.persistence.pgjooq.utils.ConnectionUtils.ConnectionWrapper; | ||
| import de.fraunhofer.iosb.ilt.frostserver.settings.CoreSettings; | ||
| import de.fraunhofer.iosb.ilt.frostserver.settings.Settings; | ||
| import java.sql.SQLException; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import org.jooq.DSLContext; | ||
| import org.jooq.Field; | ||
| import org.jooq.Record; | ||
| import org.jooq.SQLDialect; | ||
| import org.jooq.Table; | ||
| import org.jooq.impl.DSL; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| /** | ||
| * | ||
| * @author scf | ||
| */ | ||
| public class DatabaseHandler { | ||
|
|
||
| /** | ||
| * The logger for this class. | ||
| */ | ||
| private static final Logger LOGGER = LoggerFactory.getLogger(DatabaseHandler.class); | ||
|
|
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| private static final Map<CoreSettings, DatabaseHandler> INSTANCES = new HashMap<>(); | ||
|
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| private final Settings authSettings; | ||
| private final String connectionUrl; | ||
| private final String userTable; | ||
| private final String usernameColumn; | ||
|
|
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| public static void init(CoreSettings coreSettings) { | ||
| if (INSTANCES.get(coreSettings) == null) { | ||
| createInstance(coreSettings); | ||
| } | ||
| } | ||
|
|
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| private static synchronized DatabaseHandler createInstance(CoreSettings coreSettings) { | ||
| return INSTANCES.computeIfAbsent(coreSettings, (s) -> { | ||
| LOGGER.info("Initialising DatabaseHandler."); | ||
| return new DatabaseHandler(coreSettings); | ||
| }); | ||
| } | ||
|
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| public static DatabaseHandler getInstance(CoreSettings coreSettings) { | ||
| DatabaseHandler instance = INSTANCES.get(coreSettings); | ||
| if (instance == null) { | ||
| LOGGER.error("DatabaseHandler not initialised."); | ||
| } | ||
| return instance; | ||
| } | ||
|
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| private DatabaseHandler(CoreSettings coreSettings) { | ||
| authSettings = coreSettings.getAuthSettings(); | ||
| connectionUrl = authSettings.get(TAG_DB_URL, ConnectionUtils.class, false); | ||
| userTable = authSettings.get(TAG_USER_TABLE, KeycloakAuthProvider.class); | ||
| usernameColumn = authSettings.get(TAG_USERNAME_COLUMN, KeycloakAuthProvider.class); | ||
| } | ||
|
|
||
| /** | ||
| * Checks if the user is registered locally and if not, add the user. | ||
| * | ||
| * @param username the username | ||
| */ | ||
| public void enureUserInUsertable(String username) { | ||
| try (final ConnectionWrapper connectionProvider = new ConnectionWrapper(authSettings, connectionUrl)) { | ||
| final DSLContext dslContext = DSL.using(connectionProvider.get(), SQLDialect.POSTGRES); | ||
| final Field<String> usernameField = DSL.field(DSL.name(usernameColumn), String.class); | ||
| final Table<Record> table = DSL.table(DSL.name(userTable)); | ||
| long count = dslContext | ||
| .selectCount() | ||
| .from(table) | ||
| .where(usernameField.eq(username)) | ||
| .fetchOne() | ||
| .component1(); | ||
| if (count == 0) { | ||
| dslContext.insertInto(table) | ||
| .set(usernameField, username) | ||
| .execute(); | ||
| connectionProvider.commit(); | ||
| } | ||
| } catch (SQLException | RuntimeException exc) { | ||
| LOGGER.error("Failed to register user locally.", exc); | ||
| } | ||
| } | ||
|
|
||
| } |
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