making ldap config optional

gateway/src/main/java/org/georchestra/gateway/security/GatewaySecurityConfiguration.java

@@ -24,9 +24,12 @@
 import org.georchestra.ds.users.AccountDao;
 import org.georchestra.ds.users.UserRule;
 import org.georchestra.gateway.model.GatewayConfigProperties;
+import org.georchestra.gateway.security.oauth2.LdapEnabledCondition;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
 import org.springframework.security.config.web.server.ServerHttpSecurity;
@@ -114,6 +117,8 @@ private Stream<ServerHttpSecurityCustomizer> sortedCustomizers(List<ServerHttpSe
         return new ResolveGeorchestraUserGlobalFilter(resolver);
     }
 
+    @ConditionalOnExpression("${georchestra.gateway.headerAuthentication:false}")
+    @Conditional(LdapEnabledCondition.class)
     public @Bean ResolveHttpHeadersGeorchestraUserFilter resolveHttpHeadersGeorchestraUserFilter() {
         return new ResolveHttpHeadersGeorchestraUserFilter();
     }

gateway/src/main/java/org/georchestra/gateway/security/oauth2/LdapEnabledCondition.java

@@ -0,0 +1,25 @@
+package org.georchestra.gateway.security.oauth2;
+
+import com.jayway.jsonpath.JsonPath;
+import org.springframework.beans.factory.config.YamlMapFactoryBean;
+import org.springframework.context.annotation.Condition;
+import org.springframework.context.annotation.ConditionContext;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.core.io.Resource;
+import org.springframework.core.type.AnnotatedTypeMetadata;
+
+import java.util.LinkedHashMap;
+
+public class LdapEnabledCondition implements Condition {
+
+    @Override
+    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
+        Resource resource = new FileSystemResource(
+                System.getProperty("georchestra.datadir", "/etc/georchestra") + "/gateway/security.yaml");
+        YamlMapFactoryBean yaml = new YamlMapFactoryBean();
+        yaml.setResources(resource);
+        LinkedHashMap<String, LinkedHashMap<String, Object>> ldap = JsonPath.read(yaml.getObject().get("georchestra"),
+                "$.gateway.security.ldap");
+        return ldap.values().stream().anyMatch(el -> el.containsKey("enabled") && ((Boolean) el.get("enabled")));
+    }
+}

gateway/src/main/java/org/georchestra/gateway/security/oauth2/OAuth2Configuration.java

@@ -32,6 +32,7 @@
 import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.client.reactive.ReactorClientHttpConnector;
 import org.springframework.ldap.core.LdapTemplate;
@@ -110,6 +111,7 @@ private ServerLogoutSuccessHandler oidcLogoutSuccessHandler(
 
     @Bean
     @ConditionalOnExpression("${georchestra.gateway.security.createNonExistingUsersInLDAP:true}")
+    @Conditional(LdapEnabledCondition.class)
     public LdapContextSource singleContextSource(LdapConfigProperties config) {
         ExtendedLdapConfig ldapConfig = config.extendedEnabled().get(0);
         LdapContextSource singleContextSource = new LdapContextSource();
@@ -122,6 +124,7 @@ public LdapContextSource singleContextSource(LdapConfigProperties config) {
 
     @Bean
     @ConditionalOnExpression("${georchestra.gateway.security.createNonExistingUsersInLDAP:true}")
+    @Conditional(LdapEnabledCondition.class)
     public PoolingContextSource contextSource(LdapConfigProperties config, LdapContextSource singleContextSource) {
         ExtendedLdapConfig ldapConfig = config.extendedEnabled().get(0);
         PoolingContextSource contextSource = new PoolingContextSource();
@@ -138,13 +141,15 @@ public PoolingContextSource contextSource(LdapConfigProperties config, LdapConte
 
     @Bean
     @ConditionalOnExpression("${georchestra.gateway.security.createNonExistingUsersInLDAP:true}")
+    @Conditional(LdapEnabledCondition.class)
     public LdapTemplate ldapTemplate(PoolingContextSource contextSource) throws Exception {
         LdapTemplate ldapTemplate = new LdapTemplate(contextSource);
         return ldapTemplate;
     }
 
     @Bean
     @ConditionalOnExpression("${georchestra.gateway.security.createNonExistingUsersInLDAP:true}")
+    @Conditional(LdapEnabledCondition.class)
     public RoleDao roleDao(LdapTemplate ldapTemplate, LdapConfigProperties config) {
         RoleDaoImpl impl = new RoleDaoImpl();
         impl.setLdapTemplate(ldapTemplate);
@@ -154,6 +159,7 @@ public RoleDao roleDao(LdapTemplate ldapTemplate, LdapConfigProperties config) {
 
     @Bean
     @ConditionalOnExpression("${georchestra.gateway.security.createNonExistingUsersInLDAP:true}")
+    @Conditional(LdapEnabledCondition.class)
     public AccountDao accountDao(LdapTemplate ldapTemplate, LdapConfigProperties config) throws Exception {
         ExtendedLdapConfig ldapConfig = config.extendedEnabled().get(0);
         String baseDn = ldapConfig.getBaseDn();
@@ -188,6 +194,7 @@ public AccountDao accountDao(LdapTemplate ldapTemplate, LdapConfigProperties con
 
     @Bean
     @ConditionalOnExpression("${georchestra.gateway.security.createNonExistingUsersInLDAP:true}")
+    @Conditional(LdapEnabledCondition.class)
     public RoleProtected roleProtected() {
         RoleProtected roleProtected = new RoleProtected();
         roleProtected.setListOfprotectedRoles(