Bye bye Groovy, you won't be missed :(

src/main/java/io/kamax/mxisd/config/sql/SqlProviderAuthConfig.java

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+package io.kamax.mxisd.config.sql;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+// Unused
+@Configuration
+@ConfigurationProperties("sql.auth")
+public class SqlProviderAuthConfig {
+
+    private boolean enabled;
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+}

src/main/java/io/kamax/mxisd/config/sql/SqlProviderConfig.java

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+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.config.sql;
+
+import com.google.gson.Gson;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import javax.annotation.PostConstruct;
+
+@Configuration
+@ConfigurationProperties("sql")
+public class SqlProviderConfig {
+
+    private Logger log = LoggerFactory.getLogger(SqlProviderConfig.class);
+
+    private boolean enabled;
+    private String type;
+    private String connection;
+    private SqlProviderAuthConfig auth;
+    private SqlProviderIdentityConfig identity;
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getConnection() {
+        return connection;
+    }
+
+    public void setConnection(String connection) {
+        this.connection = connection;
+    }
+
+    public SqlProviderAuthConfig getAuth() {
+        return auth;
+    }
+
+    public void setAuth(SqlProviderAuthConfig auth) {
+        this.auth = auth;
+    }
+
+    public SqlProviderIdentityConfig getIdentity() {
+        return identity;
+    }
+
+    public void setIdentity(SqlProviderIdentityConfig identity) {
+        this.identity = identity;
+    }
+
+    @PostConstruct
+    private void postConstruct() {
+        log.info("--- SQL Provider config ---");
+        log.info("Enabled: {}", isEnabled());
+        if (isEnabled()) {
+            log.info("Type: {}", getType());
+            log.info("Connection: {}", getConnection());
+            log.info("Auth enabled: {}", getAuth().isEnabled());
+            log.info("Identy type: {}", getIdentity().getType());
+            log.info("Identity medium queries: {}", new Gson().toJson(getIdentity().getMedium()));
+        }
+    }
+
+}

src/main/java/io/kamax/mxisd/config/sql/SqlProviderIdentityConfig.java

@@ -0,0 +1,61 @@
+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.config.sql;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Configuration
+@ConfigurationProperties("sql.identity")
+public class SqlProviderIdentityConfig {
+
+    private String type;
+    private String query;
+    private Map<String, String> medium = new HashMap<>();
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getQuery() {
+        return query;
+    }
+
+    public void setQuery(String query) {
+        this.query = query;
+    }
+
+    public Map<String, String> getMedium() {
+        return medium;
+    }
+
+    public void setMedium(Map<String, String> medium) {
+        this.medium = medium;
+    }
+
+}