Add benchmark for comparing versions

sls-versions/src/jmh/java/com/palantir/sls/versions/SlsVersionBenchmark.java

@@ -49,8 +49,10 @@ public enum VersionString {
         RELEASE("0.16.0"),
         SNAPSHOT("0.16.0-8-g116b425"),
         RC("0.16.0-rc1"),
-        RC_SNAPSHOT("0.16.0-rc1-8-g116b425.dirty"),
-        DIRTY("0.16.0-8-g116b425.dirty");
+        RC_SNAPSHOT("0.16.0-rc1-8-g116b425"),
+        DIRTY("0.16.0-8-g116b425.dirty"),
+        DIRTY_RC("0.16.0-rc1-8-g116b425.dirty"),
+        ;
 
         private final String string;
 

sls-versions/src/jmh/java/com/palantir/sls/versions/SlsVersionComparisonBenchmark.java

@@ -0,0 +1,93 @@
+/*
+ * (c) Copyright 2019 Palantir Technologies Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.palantir.sls.versions;
+
+import java.util.concurrent.TimeUnit;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Param;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Threads;
+import org.openjdk.jmh.annotations.Warmup;
+import org.openjdk.jmh.profile.GCProfiler;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+import org.openjdk.jmh.runner.options.TimeValue;
+
+@State(Scope.Benchmark)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@Warmup(iterations = 3, time = 3, timeUnit = TimeUnit.SECONDS)
+@Measurement(iterations = 3, time = 3, timeUnit = TimeUnit.SECONDS)
+@Fork(1)
+@Threads(4)
+@SuppressWarnings({
+    "checkstyle:hideutilityclassconstructor",
+    "VisibilityModifier",
+    "DesignForExtension",
+    "ImmutableEnumChecker"
+})
+public class SlsVersionComparisonBenchmark {
+
+    public enum Version {
+        RELEASE("0.16.0"),
+        SNAPSHOT("0.16.0-8-g116b425"),
+        RC("0.16.0-rc1"),
+        RC_SNAPSHOT("0.16.0-rc1-8-g116b425"),
+        ;
+
+        private final OrderableSlsVersion version1;
+        // Used to avoid comparing the object's identities when comparing the same version
+        private final OrderableSlsVersion version2;
+
+        Version(String string) {
+            this.version1 = OrderableSlsVersion.valueOf(string);
+            this.version2 = OrderableSlsVersion.valueOf(string);
+        }
+    }
+
+    @Param
+    Version version1;
+
+    @Param
+    Version version2;
+
+    @Benchmark
+    public int compare() {
+        return version1.version1.compareTo(version2.version2);
+    }
+
+    public static void main(String[] _args) throws Exception {
+        Options opt = new OptionsBuilder()
+                .include(SlsVersionComparisonBenchmark.class.getSimpleName())
+                .addProfiler(GCProfiler.class)
+                .forks(1)
+                .threads(4)
+                .warmupIterations(3)
+                .warmupTime(TimeValue.seconds(3))
+                .measurementIterations(3)
+                .measurementTime(TimeValue.seconds(3))
+                .build();
+        new Runner(opt).run();
+    }
+}