Generate metadata for reflection on method parameters (#3377)

Fixes #3342

Author: joschi

metrics-core/src/test/java/com/codahale/metrics/ClassMetadataTest.java

@@ -0,0 +1,13 @@
+package com.codahale.metrics;
+
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class ClassMetadataTest {
+    @Test
+    public void testParameterMetadataIsAvailable() throws NoSuchMethodException {
+        assertThat(DefaultSettableGauge.class.getConstructor(Object.class).getParameters())
+                .allSatisfy(parameter -> assertThat(parameter.isNamePresent()).isTrue());
+    }
+}

pom.xml

@@ -146,9 +146,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-compiler-plugin</artifactId>
-                        <version>${maven-compiler-plugin.version}</version>
                         <configuration>
-                            <fork>true</fork>
                             <compilerArgs combine.children="append">
                                 <arg>-J-Xbootclasspath/p:${settings.localRepository}/com/google/errorprone/javac/${errorprone.javac.version}/javac-${errorprone.javac.version}.jar</arg>
                             </compilerArgs>
@@ -167,9 +165,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-compiler-plugin</artifactId>
-                        <version>${maven-compiler-plugin.version}</version>
                         <configuration>
-                            <fork>true</fork>
                             <compilerArgs>
                                 <arg>-Xlint:all</arg>
                                 <arg>-XDcompilePolicy=simple</arg>
@@ -318,10 +314,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>
+                    <fork>true</fork>
+                    <parameters>true</parameters>
                     <showWarnings>true</showWarnings>
                     <compilerArgs>
                         <arg>-Xlint:all</arg>