fixed javadocs and exported metrics to remove warning

Signed-off-by: Alfredo Gutierrez <[email protected]>

server/src/main/java/com/hedera/block/server/BlockNodeAppInjectionModule.java

@@ -52,6 +52,8 @@ public interface BlockNodeAppInjectionModule {
     /**
      * Provides a block node context singleton.
      *
+     * @param config should come from DI
+     * @param metricsService should come from DI
      * @return a block node context singleton
      */
     @Singleton

server/src/main/java/com/hedera/block/server/metrics/MetricsInjectionModule.java

@@ -23,15 +23,28 @@
 import dagger.Provides;
 import javax.inject.Singleton;
 
+/** The module used to inject the metrics service and metrics into the application. */
 @Module
 public interface MetricsInjectionModule {
 
+    /**
+     * Provides the metrics service.
+     *
+     * @param metrics the metrics to be used by the service
+     * @return the metrics service
+     */
     @Singleton
     @Provides
     static MetricsService provideMetricsService(Metrics metrics) {
         return new MetricsService(metrics);
     }
 
+    /**
+     * Provides the metrics.
+     *
+     * @param configuration the configuration to be used by the metrics
+     * @return the metrics
+     */
     @Singleton
     @Provides
     static Metrics provideMetrics(Configuration configuration) {

server/src/main/java/module-info.java

@@ -10,6 +10,7 @@
     exports com.hedera.block.server.persistence.storage.remove;
     exports com.hedera.block.server.config;
     exports com.hedera.block.server.mediator;
+    exports com.hedera.block.server.metrics;
     exports com.hedera.block.server.data;
     exports com.hedera.block.server.health;