Add exposurePercent to ExperimentValues

src/main/java/com/google/firebase/remoteconfig/ParameterValue.java

@@ -82,11 +82,13 @@ public static PersonalizationValue ofPersonalization(String personalizationId) {
    *
    * @param experimentId The experiment ID.
    * @param variantValues The list of experiment variant values.
+   * @param exposurePercent The percentage of users exposed to the experiment.
    * @return A {@link ParameterValue.ExperimentValue} instance.
    */
-  public static ExperimentValue ofExperiment(String experimentId,
-                                   List<ExperimentVariantValue> variantValues) {
-    return new ExperimentValue(experimentId, variantValues);
+  public static ExperimentValue of(
+    String experimentId, 
+    List<ExperimentVariantValue> variantValues, Double exposurePercent) { 
+    return new ExperimentValue(experimentId, variantValues, exposurePercent);
   }
 
   abstract ParameterValueResponse toParameterValueResponse();
@@ -119,7 +121,8 @@ static ParameterValue fromParameterValueResponse(
           .map(evv -> new ExperimentVariantValue(
             evv.getVariantId(),  evv.getValue(), evv.getNoChange()))
           .collect(toList());
-      return ParameterValue.ofExperiment(ev.getExperimentId(), variantValues);
+      return ParameterValue.ofExperiment(
+        ev.getExperimentId(), variantValues, ev.getExposurePercent());
     }
     return ParameterValue.of(parameterValueResponse.getValue());
   }
@@ -400,10 +403,13 @@ public int hashCode() {
   public static final class ExperimentValue extends ParameterValue {
     private final String experimentId;
     private final List<ExperimentVariantValue> variantValues;
+    private final Double exposurePercent;
 
-    private ExperimentValue(String experimentId, List<ExperimentVariantValue> variantValues) {
+
+    private ExperimentValue(String experimentId, List<ExperimentVariantValue> variantValues, Double exposurePercent) {
       this.experimentId = experimentId;
       this.variantValues = variantValues;
+      this.exposurePercent = exposurePercent;
     }
 
     /**
@@ -415,6 +421,15 @@ public String getExperimentId() {
       return experimentId;
     }
 
+
+    /**
+     * Gets the percentage of users exposed to the experiment.
+     *
+     * @return The exposure percent
+     */
+    public Double getExposurePercent() { return exposurePercent; }
+
+
     /**
      * Gets a collection of variant values served by the experiment.
      *
@@ -448,12 +463,13 @@ public boolean equals(Object o) {
       }
       ExperimentValue that = (ExperimentValue) o;
       return Objects.equals(experimentId, that.experimentId)
-              && Objects.equals(variantValues, that.variantValues);
+              && Objects.equals(variantValues, that.variantValues)
+              && Objects.equals(exposurePercent, that.exposurePercent);
     }
 
     @Override
     public int hashCode() {
-      return Objects.hash(experimentId, variantValues);
+      return Objects.hash(experimentId, variantValues, exposurePercent);
     }
   }
 }

src/main/java/com/google/firebase/remoteconfig/internal/TemplateResponse.java

@@ -288,6 +288,9 @@ public static final class ExperimentValueResponse {
     @Key("variantValue")
     private List<ExperimentVariantValueResponse> experimentVariantValues;
 
+    @Key("exposurePercent")
+    private Double exposurePercent;
+
     public String getExperimentId() {
       return experimentId;
     }
@@ -296,6 +299,11 @@ public List<ExperimentVariantValueResponse> getExperimentVariantValues() {
       return experimentVariantValues;
     }
 
+    public Double getExposurePercent() {
+      return exposurePercent;
+    }
+
+
     public ExperimentValueResponse setExperimentId(String experimentId) {
       this.experimentId = experimentId;
       return this;
@@ -306,6 +314,11 @@ public ExperimentValueResponse setExperimentVariantValues(
       this.experimentVariantValues = experimentVariantValues;
       return this;
     }
+
+    public ExperimentValueResponse setExposurePercent(Double exposurePercent) {
+      this.exposurePercent = exposurePercent;
+      return this;
+    }
   }
 
   /**

src/test/java/com/google/firebase/remoteconfig/ParameterValueTest.java

@@ -64,7 +64,7 @@ public void testCreateExperimentValue() {
             ParameterValue.ofExperiment("experiment_1", ImmutableList.of(
                     ExperimentVariantValue.of("variant_1", "value_1"),
                     ExperimentVariantValue.ofNoChange("variant_2")
-            ));
+            ), 10.0);
 
     assertEquals("experiment_1", parameterValue.getExperimentId());
     assertEquals(2, parameterValue.getExperimentVariantValues().size());
@@ -77,6 +77,8 @@ public void testCreateExperimentValue() {
     assertEquals("variant_2", variant2.getVariantId());
     assertEquals(null, variant2.getValue());
     assertEquals(true, variant2.isNoChange());
+    assertEquals(10.0, parameterValue.getExposurePercent(), 0.0);
+
   }
 
   @Test
@@ -116,19 +118,19 @@ public void testEquality() {
     ParameterValue.ExperimentValue experimentValueOne =
             ParameterValue.ofExperiment("experiment_1", ImmutableList.of(
                     ExperimentVariantValue.of("variant_1", "value_1")
-            ));
+            ), 10.0);
     ParameterValue.ExperimentValue experimentValueTwo =
             ParameterValue.ofExperiment("experiment_1", ImmutableList.of(
                     ExperimentVariantValue.of("variant_1", "value_1")
-            ));
+            ), 10.0);
     ParameterValue.ExperimentValue experimentValueThree =
             ParameterValue.ofExperiment("experiment_2", ImmutableList.of(
                     ExperimentVariantValue.of("variant_1", "value_1")
-            ));
+            ), 10.0);
     ParameterValue.ExperimentValue experimentValueFour =
             ParameterValue.ofExperiment("experiment_1", ImmutableList.of(
                     ExperimentVariantValue.of("variant_2", "value_2")
-            ));
+            ), 10.0);
 
     assertEquals(experimentValueOne, experimentValueTwo);
     assertNotEquals(experimentValueOne, experimentValueThree);