Offering extended configuration

trellis-app/src/main/java/org/trellisldp/app/config/TrellisConfiguration.java

@@ -13,10 +13,17 @@
  */
 package org.trellisldp.app.config;
 
+import static java.util.Collections.synchronizedMap;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import io.dropwizard.Configuration;
 
+import java.util.HashMap;
+import java.util.Map;
+
 import javax.validation.constraints.NotNull;
 
 /**
@@ -63,6 +70,8 @@ public class TrellisConfiguration extends Configuration {
 
     private String resourceLocation = null;
 
+    private final Map<String, Object> extras = synchronizedMap(new HashMap<>());
+
     /**
      * Get the base URL for the partition.
      * @return the partition baseURL
@@ -171,6 +180,27 @@ public String getResources() {
         return resourceLocation;
     }
 
+    /**
+     * Set an extra configuration value.
+     * @param name the name of this config value
+     * @param value the value to set
+     * @return this config for chaining
+     */
+    @JsonAnySetter
+    public TrellisConfiguration setAdditionalConfig(final String name, final Object value) {
+        extras.put(name, value);
+        return this;
+    }
+
+    /**
+     * Get any extra metadata.
+     * @return a {@link Map} of any extra metadata
+     */
+    @JsonAnyGetter
+    public Map<String, Object> any() {
+        return extras;
+    }
+
     /**
      * Set the cache max-age value.
      * @param cacheMaxAge the cache max age header value

trellis-app/src/test/java/org/trellisldp/app/config/TrellisConfigurationTest.java

@@ -13,6 +13,7 @@
  */
 package org.trellisldp.app.config;
 
+import static com.google.common.collect.Lists.newArrayList;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNull;
@@ -23,6 +24,8 @@
 import io.dropwizard.jersey.validation.Validators;
 
 import java.io.File;
+import java.util.List;
+import java.util.Map;
 
 import org.junit.jupiter.api.Test;
 import org.junit.platform.runner.JUnitPlatform;
@@ -49,6 +52,14 @@ public void testConfigurationGeneral1() throws Exception {
         assertNull(config.getResources());
         assertEquals((Integer) 2, config.getBinaryHierarchyLevels());
         assertEquals((Integer) 1, config.getBinaryHierarchyLength());
+        assertEquals("my.cluster.node", config.any().get("cassandraAddress"));
+        assertEquals((Integer)245993, config.any().get("cassandraPort"));
+        @SuppressWarnings("unchecked")
+        final Map<String, Object> extraConfig = (Map<String, Object>) config.any().get("extraConfigValues");
+        assertTrue((Boolean) extraConfig.get("one"));
+        @SuppressWarnings("unchecked")
+        final List<String> list = (List<String>) extraConfig.get("two");
+        assertEquals(newArrayList("value1", "value2"), list);
     }
 
 

trellis-app/src/test/resources/config1.yml

@@ -77,3 +77,13 @@ cors:
 
 binaryHierarchyLevels: 2
 binaryHierarchyLength: 1
+
+cassandraAddress: my.cluster.node
+cassandraPort: 245993
+
+extraConfigValues:
+    one: true
+    two:
+      - "value1"
+      - "value2"
+