1 files changed, 10 insertions, 1 deletions
diff --git a/metrics-proxy/src/main/java/ai/vespa/metricsproxy/metric/model/json/GenericApplicationModel.java b/metrics-proxy/src/main/java/ai/vespa/metricsproxy/metric/model/json/GenericApplicationModel.java
index 59d1f9e5c83..105724d17f8 100644
--- a/metrics-proxy/src/main/java/ai/vespa/metricsproxy/metric/model/json/GenericApplicationModel.java
+++ b/metrics-proxy/src/main/java/ai/vespa/metricsproxy/metric/model/json/GenericApplicationModel.java
@@ -5,10 +5,13 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.util.List;
 
 import static com.fasterxml.jackson.annotation.JsonInclude.Include.NON_ABSENT;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 /**
  * @author gjoranv
@@ -21,8 +24,14 @@ public class GenericApplicationModel {
     public List<GenericJsonModel> nodes;
 
     public String serialize() {
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        serialize(out);
+        return out.toString(UTF_8);
+    }
+
+    public void serialize(OutputStream out) {
         try {
-            return JacksonUtil.objectMapper().writeValueAsString(this);
+            JacksonUtil.objectMapper().writeValue(out, this);
         } catch (IOException e) {
             throw new JsonRenderingException("Could not render application nodes. Check the log for details.", e);
         }