Use SlimeJsonResponse

14 files changed, 63 insertions, 154 deletions

diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/ContentHandler.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/ContentHandler.java
index 7112c7d3e23..bbbc8764122 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/ContentHandler.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/ContentHandler.java
@@ -3,6 +3,7 @@ package com.yahoo.vespa.config.server.http;
 
 import com.yahoo.config.application.api.ApplicationFile;
 import com.yahoo.container.jdisc.HttpResponse;
+import com.yahoo.restapi.SlimeJsonResponse;
 import com.yahoo.slime.Cursor;
 import com.yahoo.slime.Slime;
 
@@ -102,6 +103,6 @@ public class ContentHandler {
         Slime slime = new Slime();
         Cursor root = slime.setObject();
         root.setString("prepared", request.getUrlBase("/prepared"));
-        return new SessionResponse(slime, root);
+        return new SlimeJsonResponse(slime);
     }
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentListResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentListResponse.java
index f761f5f6b6e..57095772b26 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentListResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentListResponse.java
@@ -2,12 +2,9 @@
 package com.yahoo.vespa.config.server.http;
 
 import com.yahoo.config.application.api.ApplicationFile;
+import com.yahoo.restapi.SlimeJsonResponse;
 import com.yahoo.slime.Cursor;
-import com.yahoo.slime.JsonFormat;
-import com.yahoo.slime.Slime;
 
-import java.io.IOException;
-import java.io.OutputStream;
 import java.util.List;
 
 /**
@@ -16,19 +13,13 @@ import java.util.List;
  * @author Ulf Lilleengen
  * @since 5.1
  */
-class SessionContentListResponse extends SessionResponse {
-    private final Slime slime = new Slime();
+class SessionContentListResponse extends SlimeJsonResponse {
 
     public SessionContentListResponse(String urlBase, List<ApplicationFile> files) {
-        super();
         Cursor array = slime.setArray();
         for (ApplicationFile file : files) {
             array.addString(urlBase + file.getPath() + (file.isDirectory() ? "/" : ""));
         }
     }
 
-    @Override
-    public void render(OutputStream outputStream) throws IOException {
-        new JsonFormat(true).encode(outputStream, slime);
-    }
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusListResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusListResponse.java
index 075b4bc329b..08cda869111 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusListResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusListResponse.java
@@ -3,12 +3,10 @@ package com.yahoo.vespa.config.server.http;
 
 import com.yahoo.config.application.api.ApplicationFile;
 import java.util.logging.Level;
+
+import com.yahoo.restapi.SlimeJsonResponse;
 import com.yahoo.slime.Cursor;
-import com.yahoo.slime.JsonFormat;
-import com.yahoo.slime.Slime;
 
-import java.io.IOException;
-import java.io.OutputStream;
 import java.util.*;
 
 /**
@@ -16,14 +14,11 @@ import java.util.*;
  *
  * @author hmusum
  */
-class SessionContentStatusListResponse extends SessionResponse {
+class SessionContentStatusListResponse extends SlimeJsonResponse {
 
     private static final java.util.logging.Logger log = java.util.logging.Logger.getLogger("SessionContentStatusListResponse");
 
-    private final Slime slime = new Slime();
-
     public SessionContentStatusListResponse(String urlBase, List<ApplicationFile> files) {
-        super();
         Cursor array = slime.setArray();
         for (ApplicationFile f : files) {
             Cursor element = array.addObject();
@@ -34,9 +29,4 @@ class SessionContentStatusListResponse extends SessionResponse {
         }
     }
 
-    @Override
-    public void render(OutputStream outputStream) throws IOException {
-        new JsonFormat(true).encode(outputStream, slime);
-    }
-
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusResponse.java
index bd182093e99..e6909e32985 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionContentStatusResponse.java
@@ -1,28 +1,19 @@
 // Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.vespa.config.server.http;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.yahoo.config.application.api.ApplicationFile;
+import com.yahoo.restapi.SlimeJsonResponse;
+import com.yahoo.slime.Cursor;
 
-import java.io.*;
 
 /**
  * Represents a response for a request to show the status and md5sum of a file in the application package.
  *
  * @author hmusum
  */
-public class SessionContentStatusResponse extends SessionResponse {
-
-    private final ApplicationFile file;
-    private final String urlBase;
-    private final ApplicationFile.MetaData metaData;
-    private final ObjectMapper mapper = new ObjectMapper();
+public class SessionContentStatusResponse extends SlimeJsonResponse {
 
     public SessionContentStatusResponse(ApplicationFile file, String urlBase) {
-        super();
-        this.file = file;
-        this.urlBase = urlBase;
-
         ApplicationFile.MetaData metaData;
         if (file == null) {
             metaData = new ApplicationFile.MetaData(ApplicationFile.ContentStatusDeleted, "");
@@ -32,24 +23,11 @@ public class SessionContentStatusResponse extends SessionResponse {
         if (metaData == null) {
             throw new IllegalArgumentException("Could not find status for '" + file.getPath() + "'");
         }
-        this.metaData = metaData;
-    }
 
-    @Override
-    public void render(OutputStream outputStream) throws IOException {
-        mapper.writeValue(outputStream, new ResponseData(metaData.status, metaData.md5, urlBase + file.getPath()));
-    }
-
-    private static class ResponseData {
-        public final String status;
-        public final String md5;
-        public final String name;
-
-        private ResponseData(String status, String md5, String name) {
-            this.status = status;
-            this.md5 = md5;
-            this.name = name;
-        }
+        Cursor element = slime.setObject();
+        element.setString("status", metaData.getStatus());
+        element.setString("md5", metaData.getMd5());
+        element.setString("name", urlBase + file.getPath());
     }
 
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionResponse.java
deleted file mode 100644
index ad658e3848a..00000000000
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/SessionResponse.java
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-package com.yahoo.vespa.config.server.http;
-
-import com.yahoo.container.jdisc.HttpResponse;
-import com.yahoo.slime.Cursor;
-import com.yahoo.slime.JsonFormat;
-import com.yahoo.slime.Slime;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-import static com.yahoo.jdisc.http.HttpResponse.Status.OK;
-
-/**
- * Superclass for responses from session HTTP handlers.  Implements the
- * render method.
- *
- * @author hmusum
- * @since 5.1.14
- */
-public class SessionResponse extends HttpResponse {
-    private final Slime slime;
-    protected final Cursor root;
-
-    public SessionResponse() {
-        super(OK);
-        slime = new Slime();
-        root = slime.setObject();
-    }
-
-    public SessionResponse(Slime slime, Cursor root) {
-        super(OK);
-        this.slime = slime;
-        this.root = root;
-    }
-
-    @Override
-    public void render(OutputStream outputStream) throws IOException {
-        new JsonFormat(true).encode(outputStream, slime);
-    }
-
-    @Override
-    public String getContentType() {
-        return HttpConfigResponse.JSON_CONTENT_TYPE;
-    }
-}
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/ListTenantsResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/ListTenantsResponse.java
index 95a71881b47..3789939429c 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/ListTenantsResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/ListTenantsResponse.java
@@ -3,26 +3,19 @@ package com.yahoo.vespa.config.server.http.v2;
 
 import com.google.common.collect.ImmutableSet;
 import com.yahoo.config.provision.TenantName;
+import com.yahoo.restapi.SlimeJsonResponse;
 import com.yahoo.slime.Cursor;
-import com.yahoo.vespa.config.server.http.HttpConfigResponse;
-import com.yahoo.vespa.config.server.http.SessionResponse;
 
 /**
  * Tenant list response
  * 
  * @author vegardh
  */
-public class ListTenantsResponse extends SessionResponse {
+public class ListTenantsResponse extends SlimeJsonResponse {
 
     ListTenantsResponse(ImmutableSet<TenantName> tenants) {
-        super();
-        Cursor tenantArray = this.root.setArray("tenants");
+        Cursor tenantArray = slime.setObject().setArray("tenants");
         tenants.forEach(tenantName -> tenantArray.addString(tenantName.value()));
     }
 
-    @Override
-    public String getContentType() {
-        return HttpConfigResponse.JSON_CONTENT_TYPE;
-    }
-
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionActiveResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionActiveResponse.java
index 334dbe88614..9c0fbdf2613 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionActiveResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionActiveResponse.java
@@ -4,16 +4,19 @@ package com.yahoo.vespa.config.server.http.v2;
 import com.yahoo.config.provision.TenantName;
 import com.yahoo.config.provision.Zone;
 import com.yahoo.container.jdisc.HttpRequest;
+import com.yahoo.restapi.SlimeJsonResponse;
+import com.yahoo.slime.Cursor;
 import com.yahoo.slime.Slime;
 import com.yahoo.config.provision.ApplicationId;
-import com.yahoo.vespa.config.server.http.SessionResponse;
 
-public class SessionActiveResponse extends SessionResponse {
+public class SessionActiveResponse extends SlimeJsonResponse {
 
     public SessionActiveResponse(Slime metaData, HttpRequest request, ApplicationId applicationId, long sessionId, Zone zone) {
-        super(metaData, metaData.get());
+        super(metaData);
         TenantName tenantName = applicationId.tenant();
         String message = "Session " + sessionId + " for tenant '" + tenantName.value() + "' activated.";
+        Cursor root = metaData.get();
+
         root.setString("tenant", tenantName.value());
         root.setString("message", message);
         root.setString("url", "http://" + request.getHost() + ":" + request.getPort() +
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateHandler.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateHandler.java
index 5aee711b379..de8b2e63aeb 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateHandler.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateHandler.java
@@ -60,7 +60,7 @@ public class SessionCreateHandler extends SessionHandler {
             ApplicationId applicationId = ApplicationId.from(tenantName, ApplicationName.defaultName(), InstanceName.defaultName());
             sessionId = applicationRepository.createSession(applicationId, timeoutBudget, request.getData(), request.getHeader(ApplicationApiHandler.contentTypeHeader));
         }
-        return createResponse(request, tenantName, deployLog, sessionId);
+        return new SessionCreateResponse(deployLog, tenantName, request.getHost(), request.getPort(), sessionId);
     }
 
     static ApplicationId getFromApplicationId(HttpRequest request) {
@@ -99,9 +99,4 @@ public class SessionCreateHandler extends SessionHandler {
                                                   ApplicationApiHandler.APPLICATION_X_GZIP + "' and '" + ApplicationApiHandler.APPLICATION_ZIP + "' are supported");
         }
     }
-
-    private HttpResponse createResponse(HttpRequest request, TenantName tenantName, Slime deployLog, long sessionId) {
-        return new SessionCreateResponse(tenantName, deployLog, deployLog.get())
-                .createResponse(request.getHost(), request.getPort(), sessionId);
-    }
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateResponse.java
index 7d08ea94ce6..33c8f54b1f6 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionCreateResponse.java
@@ -2,10 +2,9 @@
 package com.yahoo.vespa.config.server.http.v2;
 
 import com.yahoo.config.provision.TenantName;
-import com.yahoo.container.jdisc.HttpResponse;
+import com.yahoo.restapi.SlimeJsonResponse;
 import com.yahoo.slime.Cursor;
 import com.yahoo.slime.Slime;
-import com.yahoo.vespa.config.server.http.SessionResponse;
 
 /**
  * Creates a response for SessionCreateHandler.
@@ -13,22 +12,17 @@ import com.yahoo.vespa.config.server.http.SessionResponse;
  * @author hmusum
  * @since 5.1.27
  */
-public class SessionCreateResponse extends SessionResponse {
-    private final TenantName tenantName;
+public class SessionCreateResponse extends SlimeJsonResponse {
 
-    public SessionCreateResponse(TenantName tenantName, Slime deployLog, Cursor root) {
-        super(deployLog, root);
-        this.tenantName = tenantName;
-    }
-
-    public HttpResponse createResponse(String hostName, int port, long sessionId) {
+    public SessionCreateResponse(Slime deployLog, TenantName tenantName, String hostName, int port, long sessionId) {
+        super(deployLog);
         String path = "http://" + hostName + ":" + port + "/application/v2/tenant/" + tenantName.value() + "/session/" + sessionId;
+        Cursor root = deployLog.get();
 
-        this.root.setString("tenant", tenantName.value());
-        this.root.setString("session-id", Long.toString(sessionId));
-        this.root.setString("prepared", path + "/prepared");
-        this.root.setString("content", path + "/content/");
-        this.root.setString("message", "Session " + sessionId + " for tenant '" + tenantName.value() + "' created.");
-        return this;
+        root.setString("tenant", tenantName.value());
+        root.setString("session-id", Long.toString(sessionId));
+        root.setString("prepared", path + "/prepared");
+        root.setString("content", path + "/content/");
+        root.setString("message", "Session " + sessionId + " for tenant '" + tenantName.value() + "' created.");
     }
 }
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareAndActivateResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareAndActivateResponse.java
index 7d9a0b11c28..7bace4749a8 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareAndActivateResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareAndActivateResponse.java
@@ -5,21 +5,25 @@ import com.yahoo.config.provision.ApplicationId;
 import com.yahoo.config.provision.TenantName;
 import com.yahoo.config.provision.Zone;
 import com.yahoo.container.jdisc.HttpRequest;
+import com.yahoo.restapi.SlimeJsonResponse;
+import com.yahoo.slime.Cursor;
 import com.yahoo.vespa.config.server.configchange.ConfigChangeActionsSlimeConverter;
-import com.yahoo.vespa.config.server.http.SessionResponse;
 
 /**
  * Creates a response for SessionPrepareHandler.
  *
  * @author hmusum
  */
-class SessionPrepareAndActivateResponse extends SessionResponse {
+class SessionPrepareAndActivateResponse extends SlimeJsonResponse {
 
     SessionPrepareAndActivateResponse(PrepareResult result, HttpRequest request, ApplicationId applicationId, Zone zone) {
-        super(result.deployLog(), result.deployLog().get());
+        super(result.deployLogger().slime());
+
         TenantName tenantName = applicationId.tenant();
         String message = "Session " + result.sessionId() + " for tenant '" + tenantName.value() + "' prepared and activated.";
-        this.root.setString("tenant", tenantName.value());
+        Cursor root = slime.get();
+
+        root.setString("tenant", tenantName.value());
         root.setString("url", "http://" + request.getHost() + ":" + request.getPort() +
                 "/application/v2/tenant/" + tenantName +
                 "/application/" + applicationId.application().value() +
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareHandler.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareHandler.java
index c0789a9c828..4cb07e37f28 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareHandler.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareHandler.java
@@ -51,7 +51,7 @@ public class SessionPrepareHandler extends SessionHandler {
         long sessionId = getSessionIdV2(request);
         applicationRepository.validateThatSessionIsNotActive(tenant, sessionId);
         applicationRepository.validateThatSessionIsPrepared(tenant, sessionId);
-        return new SessionPrepareResponse(applicationRepository.createDeployLog(), tenant.getName(), request, sessionId);
+        return new SessionPrepareResponse(tenant.getName(), request, sessionId);
     }
 
     @Override
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareResponse.java b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareResponse.java
index 6d2aa426036..a97cd37d3b4 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareResponse.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/http/v2/SessionPrepareResponse.java
@@ -3,33 +3,36 @@ package com.yahoo.vespa.config.server.http.v2;
 
 import com.yahoo.config.provision.TenantName;
 import com.yahoo.container.jdisc.HttpRequest;
+import com.yahoo.restapi.SlimeJsonResponse;
+import com.yahoo.slime.Cursor;
 import com.yahoo.slime.Slime;
+import com.yahoo.slime.Type;
 import com.yahoo.vespa.config.server.configchange.ConfigChangeActions;
 import com.yahoo.vespa.config.server.configchange.ConfigChangeActionsSlimeConverter;
-import com.yahoo.vespa.config.server.http.SessionResponse;
 
 /**
  * Creates a response for SessionPrepareHandler.
  *
  * @author hmusum
  */
-class SessionPrepareResponse extends SessionResponse {
+class SessionPrepareResponse extends SlimeJsonResponse {
 
-    SessionPrepareResponse(Slime deployLog, TenantName tenantName, HttpRequest request, long sessionId) {
-        this(deployLog, tenantName, request, sessionId, new ConfigChangeActions());
+    SessionPrepareResponse(TenantName tenantName, HttpRequest request, long sessionId) {
+        this(new Slime(), tenantName, request, sessionId, new ConfigChangeActions());
     }
 
     SessionPrepareResponse(PrepareResult result, TenantName tenantName, HttpRequest request) {
-        this(result.deployLog(), tenantName, request, result.sessionId(), result.configChangeActions());
+        this(result.deployLogger().slime(), tenantName, request, result.sessionId(), result.configChangeActions());
     }
 
     private SessionPrepareResponse(Slime deployLog, TenantName tenantName, HttpRequest request, long sessionId, ConfigChangeActions actions) {
-        super(deployLog, deployLog.get());
-        String message = "Session " + sessionId + " for tenant '" + tenantName.value() + "' prepared.";
-        this.root.setString("tenant", tenantName.value());
-        this.root.setString("activate", "http://" + request.getHost() + ":" + request.getPort() +
+        super(deployLog);
+
+        Cursor root = deployLog.get().type() != Type.NIX ? deployLog.get() : deployLog.setObject();
+        root.setString("tenant", tenantName.value());
+        root.setString("activate", "http://" + request.getHost() + ":" + request.getPort() +
                 "/application/v2/tenant/" + tenantName.value() + "/session/" + sessionId + "/active");
-        root.setString("message", message);
+        root.setString("message", "Session " + sessionId + " for tenant '" + tenantName.value() + "' prepared.");
         new ConfigChangeActionsSlimeConverter(actions).toSlime(root);
     }
 
diff --git a/configserver/src/test/java/com/yahoo/vespa/config/server/http/v2/TenantHandlerTest.java b/configserver/src/test/java/com/yahoo/vespa/config/server/http/v2/TenantHandlerTest.java
index e2eeb68a565..748c43bafeb 100644
--- a/configserver/src/test/java/com/yahoo/vespa/config/server/http/v2/TenantHandlerTest.java
+++ b/configserver/src/test/java/com/yahoo/vespa/config/server/http/v2/TenantHandlerTest.java
@@ -8,18 +8,17 @@ import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.time.Clock;
 
 import com.yahoo.cloud.config.ConfigserverConfig;
 import com.yahoo.config.provision.ApplicationId;
 import com.yahoo.config.provision.ApplicationName;
 import com.yahoo.config.provision.InstanceName;
 import com.yahoo.config.provision.TenantName;
+import com.yahoo.container.jdisc.HttpResponse;
 import com.yahoo.vespa.config.server.ApplicationRepository;
 import com.yahoo.vespa.config.server.TestComponentRegistry;
 import com.yahoo.vespa.config.server.application.OrchestratorMock;
 import com.yahoo.vespa.config.server.http.SessionHandlerTest;
-import com.yahoo.vespa.config.server.http.SessionResponse;
 import com.yahoo.vespa.config.server.session.PrepareParams;
 import com.yahoo.vespa.config.server.tenant.Tenant;
 import com.yahoo.vespa.config.server.tenant.TenantRepository;
@@ -157,7 +156,7 @@ public class TenantHandlerTest {
         return (TenantCreateResponse) handler.handlePUT(testRequest);
     }
 
-    private void assertResponseEquals(SessionResponse response, String payload) throws IOException {
+    private void assertResponseEquals(HttpResponse response, String payload) throws IOException {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         response.render(baos);
         assertEquals(baos.toString(StandardCharsets.UTF_8), payload);
diff --git a/container-core/src/main/java/com/yahoo/restapi/SlimeJsonResponse.java b/container-core/src/main/java/com/yahoo/restapi/SlimeJsonResponse.java
index 2473da3578d..a0f8b58fb6a 100644
--- a/container-core/src/main/java/com/yahoo/restapi/SlimeJsonResponse.java
+++ b/container-core/src/main/java/com/yahoo/restapi/SlimeJsonResponse.java
@@ -15,7 +15,11 @@ import java.io.OutputStream;
  */
 public class SlimeJsonResponse extends HttpResponse {
 
-    private final Slime slime;
+    protected final Slime slime;
+
+    public SlimeJsonResponse() {
+        this(new Slime());
+    }
 
     public SlimeJsonResponse(Slime slime) {
         super(200);