rehome some APIs to nb-api

drivers-api/pom.xml

@@ -38,16 +38,6 @@
             <version>4.15.52-SNAPSHOT</version>
         </dependency>
 
-        <dependency>
-            <groupId>io.dropwizard.metrics</groupId>
-            <artifactId>metrics-core</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.graalvm.sdk</groupId>
-            <artifactId>graal-sdk</artifactId>
-        </dependency>
-
 
     </dependencies>
 

engine-api/pom.xml

@@ -75,15 +75,6 @@
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
         </dependency>
-        <dependency>
-            <groupId>com.mitchtalmadge</groupId>
-            <artifactId>ascii-data</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.hdrhistogram</groupId>
-            <artifactId>HdrHistogram</artifactId>
-        </dependency>
 
         <dependency>
             <groupId>org.apache.commons</groupId>

nb-api/pom.xml

@@ -87,6 +87,29 @@
             <artifactId>commons-codec</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>io.dropwizard.metrics</groupId>
+            <artifactId>metrics-core</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hdrhistogram</groupId>
+            <artifactId>HdrHistogram</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.mitchtalmadge</groupId>
+            <artifactId>ascii-data</artifactId>
+        </dependency>
+
+
+
+        <dependency>
+            <groupId>org.graalvm.sdk</groupId>
+            <artifactId>graal-sdk</artifactId>
+        </dependency>
+
+
 
     </dependencies>
 

nb-api/src/main/java/io/nosqlbench/engine/api/metrics/ConvenientSnapshot.java

@@ -23,11 +23,11 @@ import java.io.OutputStream;
 
 public class ConvenientSnapshot extends Snapshot {
 
-    private double NS_PER_S = 1000000000.0D;
-    private double NS_PER_MS = 1000000.0D;
-    private double NS_PER_US = 1000.0D;
+    private final double NS_PER_S = 1000000000.0D;
+    private final double NS_PER_MS = 1000000.0D;
+    private final double NS_PER_US = 1000.0D;
 
-    private Snapshot snapshot;
+    private final Snapshot snapshot;
     ConvenientSnapshot(Snapshot snapshot) {
         this.snapshot = snapshot;
     }