Audit create/update of a supervisor spec (#15636)

Changes
- Audit create or update of a supervisor spec. The purpose of the audit is
to track which user made change to a supervisor and when.
- The audit entry does not contain the entire spec or even a diff of the changes
as this is already captured in the `druid_supervisors` metadata table.

indexing-service/src/main/java/org/apache/druid/indexing/overlord/supervisor/SupervisorResource.java

@@ -30,6 +30,8 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 import com.google.inject.Inject;
 import com.sun.jersey.spi.container.ResourceFilters;
+import org.apache.druid.audit.AuditEntry;
+import org.apache.druid.audit.AuditManager;
 import org.apache.druid.indexing.overlord.DataSourceMetadata;
 import org.apache.druid.indexing.overlord.TaskMaster;
 import org.apache.druid.indexing.overlord.http.security.SupervisorResourceFilter;
@@ -90,6 +92,7 @@ public class SupervisorResource
   private final TaskMaster taskMaster;
   private final AuthorizerMapper authorizerMapper;
   private final ObjectMapper objectMapper;
+  private final AuditManager auditManager;
   private final AuthConfig authConfig;
 
   @Inject
@@ -97,13 +100,15 @@ public class SupervisorResource
       TaskMaster taskMaster,
       AuthorizerMapper authorizerMapper,
       ObjectMapper objectMapper,
-      AuthConfig authConfig
+      AuthConfig authConfig,
+      AuditManager auditManager
   )
   {
     this.taskMaster = taskMaster;
     this.authorizerMapper = authorizerMapper;
     this.objectMapper = objectMapper;
     this.authConfig = authConfig;
+    this.auditManager = auditManager;
   }
 
   @POST
@@ -143,6 +148,19 @@ public class SupervisorResource
           }
 
           manager.createOrUpdateAndStartSupervisor(spec);
+
+          final String auditPayload
+              = StringUtils.format("Update supervisor[%s] for datasource[%s]", spec.getId(), spec.getDataSources());
+          auditManager.doAudit(
+              AuditEntry.builder()
+                        .key(spec.getId())
+                        .type("supervisor")
+                        .auditInfo(AuthorizationUtils.buildAuditInfo(req))
+                        .request(AuthorizationUtils.buildRequestInfo("overlord", req))
+                        .payload(auditPayload)
+                        .build()
+          );
+
           return Response.ok(ImmutableMap.of("id", spec.getId())).build();
         }
     );

indexing-service/src/test/java/org/apache/druid/indexing/overlord/supervisor/SupervisorResourceTest.java

@@ -25,6 +25,7 @@ import com.google.common.base.Optional;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
+import org.apache.druid.audit.AuditManager;
 import org.apache.druid.indexing.overlord.DataSourceMetadata;
 import org.apache.druid.indexing.overlord.TaskMaster;
 import org.apache.druid.indexing.overlord.supervisor.autoscaler.SupervisorTaskAutoScaler;
@@ -92,6 +93,9 @@ public class SupervisorResourceTest extends EasyMockSupport
   @Mock
   private AuthConfig authConfig;
 
+  @Mock
+  private AuditManager auditManager;
+
   private SupervisorResource supervisorResource;
 
   @Before
@@ -127,7 +131,8 @@ public class SupervisorResourceTest extends EasyMockSupport
           }
         },
         OBJECT_MAPPER,
-        authConfig
+        authConfig,
+        auditManager
     );
   }
 
@@ -146,14 +151,14 @@ public class SupervisorResourceTest extends EasyMockSupport
 
     EasyMock.expect(taskMaster.getSupervisorManager()).andReturn(Optional.of(supervisorManager));
     EasyMock.expect(supervisorManager.createOrUpdateAndStartSupervisor(spec)).andReturn(true);
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
-    EasyMock.expect(authConfig.isEnableInputSourceSecurity()).andReturn(false);
+
+    setupMockRequest();
+    setupMockRequestForAudit();
+
+    EasyMock.expect(authConfig.isEnableInputSourceSecurity()).andReturn(true);
+    auditManager.doAudit(EasyMock.anyObject());
+    EasyMock.expectLastCall().once();
+
     replayAll();
 
     Response response = supervisorResource.specPost(spec, request);
@@ -187,13 +192,12 @@ public class SupervisorResourceTest extends EasyMockSupport
 
     EasyMock.expect(taskMaster.getSupervisorManager()).andReturn(Optional.of(supervisorManager));
     EasyMock.expect(supervisorManager.createOrUpdateAndStartSupervisor(spec)).andReturn(true);
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
+    setupMockRequestForAudit();
+
+    auditManager.doAudit(EasyMock.anyObject());
+    EasyMock.expectLastCall().once();
+
     EasyMock.expect(authConfig.isEnableInputSourceSecurity()).andReturn(true);
     replayAll();
 
@@ -248,13 +252,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorIds()).andReturn(SUPERVISOR_IDS).atLeastOnce();
     EasyMock.expect(supervisorManager.getSupervisorSpec(SPEC1.getId())).andReturn(Optional.of(SPEC1));
     EasyMock.expect(supervisorManager.getSupervisorSpec(SPEC2.getId())).andReturn(Optional.of(SPEC2));
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.specGetAll(null, null, null, request);
@@ -285,13 +283,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorSpec("id2")).andReturn(Optional.of(SPEC2)).anyTimes();
     EasyMock.expect(supervisorManager.getSupervisorState("id1")).andReturn(Optional.of(state1)).anyTimes();
     EasyMock.expect(supervisorManager.getSupervisorState("id2")).andReturn(Optional.of(state2)).anyTimes();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.specGetAll("", null, null, request);
@@ -320,13 +312,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorSpec("id2")).andReturn(Optional.of(SPEC2)).anyTimes();
     EasyMock.expect(supervisorManager.getSupervisorState("id1")).andReturn(Optional.of(state1)).anyTimes();
     EasyMock.expect(supervisorManager.getSupervisorState("id2")).andReturn(Optional.of(state2)).anyTimes();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.specGetAll(null, null, "", request);
@@ -359,13 +345,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorSpec("id2")).andReturn(Optional.of(SPEC2)).times(1);
     EasyMock.expect(supervisorManager.getSupervisorState("id1")).andReturn(Optional.of(state1)).times(1);
     EasyMock.expect(supervisorManager.getSupervisorState("id2")).andReturn(Optional.of(state2)).times(1);
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.specGetAll(null, true, null, request);
@@ -598,13 +578,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.suspendOrResumeSupervisor(SPEC1.getId(), true)).andReturn(true);
     EasyMock.expect(supervisorManager.suspendOrResumeSupervisor(SPEC2.getId(), true)).andReturn(true);
 
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.suspendAll(request);
@@ -622,13 +596,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorSpec(SPEC2.getId())).andReturn(Optional.of(SPEC2));
     EasyMock.expect(supervisorManager.suspendOrResumeSupervisor(SPEC1.getId(), true)).andReturn(true);
 
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("notDruid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequestForUser("notDruid");
     replayAll();
 
     Response response = supervisorResource.suspendAll(request);
@@ -647,13 +615,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.suspendOrResumeSupervisor(SPEC1.getId(), false)).andReturn(true);
     EasyMock.expect(supervisorManager.suspendOrResumeSupervisor(SPEC2.getId(), false)).andReturn(true);
 
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.resumeAll(request);
@@ -671,13 +633,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorSpec(SPEC2.getId())).andReturn(Optional.of(SPEC2));
     EasyMock.expect(supervisorManager.suspendOrResumeSupervisor(SPEC1.getId(), false)).andReturn(true);
 
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("notDruid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequestForUser("notDruid");
     replayAll();
 
     Response response = supervisorResource.resumeAll(request);
@@ -696,13 +652,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.stopAndRemoveSupervisor(SPEC1.getId())).andReturn(true);
     EasyMock.expect(supervisorManager.stopAndRemoveSupervisor(SPEC2.getId())).andReturn(true);
 
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.terminateAll(request);
@@ -720,13 +670,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorSpec(SPEC2.getId())).andReturn(Optional.of(SPEC2));
     EasyMock.expect(supervisorManager.stopAndRemoveSupervisor(SPEC1.getId())).andReturn(true);
 
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("notDruid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequestForUser("notDruid");
     replayAll();
 
     Response response = supervisorResource.terminateAll(request);
@@ -801,13 +745,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorHistory()).andReturn(history);
     EasyMock.expect(supervisorManager.getSupervisorSpec("id1")).andReturn(Optional.of(SPEC1)).atLeastOnce();
     EasyMock.expect(supervisorManager.getSupervisorSpec("id2")).andReturn(Optional.of(SPEC2)).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.specGetAllHistory(request);
@@ -912,13 +850,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorHistory()).andReturn(history);
     EasyMock.expect(supervisorManager.getSupervisorSpec("id1")).andReturn(Optional.of(SPEC1)).atLeastOnce();
     EasyMock.expect(supervisorManager.getSupervisorSpec("id2")).andReturn(Optional.of(SPEC2)).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("wronguser", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequestForUser("wronguser");
     replayAll();
 
     Response response = supervisorResource.specGetAllHistory(request);
@@ -1002,13 +934,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorHistoryForId("id1")).andReturn(versions1).times(1);
     EasyMock.expect(supervisorManager.getSupervisorHistoryForId("id2")).andReturn(versions2).times(1);
     EasyMock.expect(supervisorManager.getSupervisorHistoryForId("id3")).andReturn(Collections.emptyList()).times(1);
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("druid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequest();
     replayAll();
 
     Response response = supervisorResource.specGetHistory(request, "id1");
@@ -1099,13 +1025,7 @@ public class SupervisorResourceTest extends EasyMockSupport
     EasyMock.expect(supervisorManager.getSupervisorHistoryForId("id2")).andReturn(versions2).times(1);
     EasyMock.expect(supervisorManager.getSupervisorHistoryForId("id3")).andReturn(versions3).times(1);
     EasyMock.expect(supervisorManager.getSupervisorHistoryForId("id4")).andReturn(Collections.emptyList()).times(1);
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
-    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT)).andReturn(
-        new AuthenticationResult("notdruid", "druid", null, null)
-    ).atLeastOnce();
-    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
-    EasyMock.expectLastCall().anyTimes();
+    setupMockRequestForUser("notdruid");
     replayAll();
 
     Response response = supervisorResource.specGetHistory(request, "id1");
@@ -1261,6 +1181,33 @@ public class SupervisorResourceTest extends EasyMockSupport
     Assert.assertEquals(spec, specRoundTrip);
   }
 
+  private void setupMockRequest()
+  {
+    setupMockRequestForUser("druid");
+  }
+
+  private void setupMockRequestForUser(String user)
+  {
+    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_ALLOW_UNSECURED_PATH)).andReturn(null).atLeastOnce();
+    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED)).andReturn(null).atLeastOnce();
+    EasyMock.expect(request.getAttribute(AuthConfig.DRUID_AUTHENTICATION_RESULT))
+            .andReturn(new AuthenticationResult(user, "druid", null, null))
+            .atLeastOnce();
+    request.setAttribute(AuthConfig.DRUID_AUTHORIZATION_CHECKED, true);
+    EasyMock.expectLastCall().anyTimes();
+  }
+
+  private void setupMockRequestForAudit()
+  {
+    EasyMock.expect(request.getHeader(AuditManager.X_DRUID_AUTHOR)).andReturn("author").once();
+    EasyMock.expect(request.getHeader(AuditManager.X_DRUID_COMMENT)).andReturn("comment").once();
+
+    EasyMock.expect(request.getRemoteAddr()).andReturn("127.0.0.1").once();
+    EasyMock.expect(request.getMethod()).andReturn("POST").once();
+    EasyMock.expect(request.getRequestURI()).andReturn("supes").once();
+    EasyMock.expect(request.getQueryString()).andReturn("a=b").once();
+  }
+
   private static class TestSupervisorSpec implements SupervisorSpec
   {
     protected final String id;