benchmark to test jackson smile parsing

See FasterXML/jackson-dataformats-binary#342

Author: brharrington

build.gradle

@@ -94,7 +94,7 @@ subprojects {
     profilers = ['stack', 'gc']
     includeTests = false
     duplicateClassesStrategy = DuplicatesStrategy.WARN
-    includes = ['.*Caching.*']
+    includes = ['.*DecodeShortAscii.*']
   }
 
   checkstyle {

dependencies.properties

@@ -3,7 +3,7 @@ com.amazonaws:aws-java-sdk-core = 1.12.335
 com.amazonaws:aws-java-sdk-cloudwatch = 1.12.335
 com.fasterxml.jackson.core:jackson-core = 2.14.0
 com.fasterxml.jackson.core:jackson-databind = 2.14.0
-com.fasterxml.jackson.dataformat:jackson-dataformat-smile = 2.14.0
+com.fasterxml.jackson.dataformat:jackson-dataformat-smile = 2.14.1-SNAPSHOT
 com.github.ben-manes.caffeine:caffeine = 2.9.3
 com.google.inject.extensions:guice-servlet = 5.1.0
 com.google.inject:guice = 5.1.0

spectator-reg-atlas/src/jmh/java/com/netflix/spectator/atlas/DecodeShortAsciiValues.java

@@ -0,0 +1,66 @@
+package com.netflix.spectator.atlas;
+
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonToken;
+import com.fasterxml.jackson.dataformat.smile.SmileFactory;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.infra.Blackhole;
+
+import java.io.ByteArrayOutputStream;
+import java.util.Random;
+
+@State(Scope.Thread)
+public class DecodeShortAsciiValues {
+
+  private static int N = 100;
+
+  private JsonFactory factory;
+  private byte[] inputData;
+
+  private static String randomShortAsciiString() {
+    Random r = new Random();
+    final int length = r.nextInt(64);
+    final char[] buf = new char[length];
+    for (int i = 0; i < length; ++i) {
+      buf[i] = (char) (r.nextInt('~' - ' ') + ' ');
+    }
+    return new String(buf);
+  }
+
+  @Setup
+  public void setup() throws Exception {
+    factory = new SmileFactory();
+
+    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    try (JsonGenerator gen = factory.createGenerator(baos)) {
+      gen.writeStartArray();
+      for (int i = 0; i < N; ++i) {
+        gen.writeString(randomShortAsciiString());
+      }
+      gen.writeEndArray();
+    }
+    inputData = baos.toByteArray();
+  }
+
+  @Benchmark
+  public void parse(Blackhole bh) throws Exception {
+    String[] strings = new String[N];
+    try (JsonParser parser = factory.createParser(inputData)) {
+      parser.nextToken();
+      int i = 0;
+      while (parser.nextToken() != JsonToken.END_ARRAY) {
+        strings[i++] = parser.getText();
+      }
+    }
+    bh.consume(strings);
+  }
+
+  public static void main(String[] args) {
+    System.out.println(randomShortAsciiString());
+  }
+}