Semver equalto matcher

client/src/main/java/io/split/client/dtos/MatcherType.java

@@ -30,5 +30,8 @@ public enum MatcherType {
     EQUAL_TO_BOOLEAN,
 
     /* Dependency Matcher */
-    IN_SPLIT_TREATMENT
+    IN_SPLIT_TREATMENT,
+
+    /* Semver matchers */
+    EQUAL_TO_SEMVER
 }

client/src/main/java/io/split/engine/experiments/SplitParser.java

@@ -19,6 +19,7 @@
 import io.split.engine.matchers.GreaterThanOrEqualToMatcher;
 import io.split.engine.matchers.LessThanOrEqualToMatcher;
 import io.split.engine.matchers.UserDefinedSegmentMatcher;
+import io.split.engine.matchers.EqualToSemverMatcher;
 import io.split.engine.matchers.collections.ContainsAllOfSetMatcher;
 import io.split.engine.matchers.collections.ContainsAnyOfSetMatcher;
 import io.split.engine.matchers.collections.EqualToSetMatcher;
@@ -193,6 +194,10 @@ private AttributeMatcher toMatcher(Matcher matcher) {
                                 + ". matcher.booleanMatcherData() MUST NOT BE null");
                 delegate = new BooleanMatcher(matcher.booleanMatcherData);
                 break;
+            case EQUAL_TO_SEMVER:
+                checkNotNull(matcher.stringMatcherData);
+                delegate = new EqualToSemverMatcher(matcher.stringMatcherData);
+                break;
             default:
                 throw new IllegalArgumentException("Unknown matcher type: " + matcher.matcherType);
         }

client/src/main/java/io/split/engine/matchers/EqualToSemverMatcher.java

@@ -0,0 +1,54 @@
+package io.split.engine.matchers;
+
+import io.split.engine.evaluator.EvaluationContext;
+
+import java.util.Map;
+
+public class EqualToSemverMatcher implements Matcher {
+
+    private final Semver _semVer;
+
+    public EqualToSemverMatcher(String semVer) {
+        _semVer = Semver.build(semVer);
+    }
+
+    @Override
+    public boolean match(Object matchValue, String bucketingKey, Map<String, Object> attributes, EvaluationContext evaluationContext) {
+        if (matchValue == null || _semVer == null) {
+            return false;
+        }
+        Semver matchSemver = Semver.build(matchValue.toString());
+        if (matchSemver == null) {
+            return false;
+        }
+
+        return matchSemver.Version().equals(_semVer.Version());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder bldr = new StringBuilder();
+        bldr.append("== ");
+        bldr.append(_semVer);
+        return bldr.toString();
+    }
+
+    @Override
+    public int hashCode() {
+        int result = 17;
+        result = 31 * result + _semVer.hashCode();
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) return false;
+        if (this == obj) return true;
+        if (!(obj instanceof EqualToSemverMatcher)) return false;
+
+        EqualToSemverMatcher other = (EqualToSemverMatcher) obj;
+
+        return _semVer == other._semVer;
+    }
+
+}

client/src/test/java/io/split/engine/matchers/EqualToSemverMatcherTest.java

@@ -0,0 +1,23 @@
+package io.split.engine.matchers;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
+
+/**
+ * Tests for EqualToSemverMatcher
+ */
+
+public class EqualToSemverMatcherTest {
+
+    @Test
+    public void works() {
+        EqualToSemverMatcher equalToSemverMatcher = new EqualToSemverMatcher("2.1.8");
+
+        assertTrue( equalToSemverMatcher.match("2.1.8", null, null, null));
+        assertFalse(equalToSemverMatcher.match("2.1.9", null, null, null));
+        assertFalse(equalToSemverMatcher.match("2.1.8-rc", null, null, null));
+        assertFalse( equalToSemverMatcher.match("2.1.8+build", null, null, null));
+    }
+}