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From jia...@apache.org
Subject [06/74] [abbrv] hadoop git commit: YARN-5461. Initial code ported from slider-core module. (jianhe)
Date Tue, 13 Dec 2016 22:52:58 GMT
http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationResponse.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationResponse.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationResponse.java
new file mode 100644
index 0000000..80b7a5e
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationResponse.java
@@ -0,0 +1,133 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.slider.server.appmaster.web.rest.agent;
+
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.annotate.JsonProperty;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
+
+import java.util.List;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
+public class RegistrationResponse {
+
+  @JsonProperty("response")
+  private RegistrationStatus response;
+
+  /**
+   * exitstatus is a code of error which was rised on server side. exitstatus
+   * = 0 (OK - Default) exitstatus = 1 (Registration failed because different
+   * version of agent and server)
+   */
+  @JsonProperty("exitstatus")
+  private int exitstatus;
+
+  /** log - message, which will be printed to agents log */
+  @JsonProperty("log")
+  private String log;
+
+  /** tags - tags associated with the container */
+  @JsonProperty("tags")
+  private String tags;
+  
+  @JsonProperty("package")
+  private String pkg;
+
+  //Response id to start with, usually zero.
+  @JsonProperty("responseId")
+  private long responseId;
+
+  @JsonProperty("statusCommands")
+  private List<StatusCommand> statusCommands = null;
+
+  public RegistrationResponse() {
+  }
+
+  public RegistrationStatus getResponse() {
+    return response;
+  }
+
+  public void setResponse(RegistrationStatus response) {
+    this.response = response;
+  }
+
+  public int getExitstatus() {
+    return exitstatus;
+  }
+
+  public void setExitstatus(int exitstatus) {
+    this.exitstatus = exitstatus;
+  }
+
+  public RegistrationStatus getResponseStatus() {
+    return response;
+  }
+
+  public void setResponseStatus(RegistrationStatus response) {
+    this.response = response;
+  }
+
+  public List<StatusCommand> getStatusCommands() {
+    return statusCommands;
+  }
+
+  public void setStatusCommands(List<StatusCommand> statusCommands) {
+    this.statusCommands = statusCommands;
+  }
+
+  public long getResponseId() {
+    return responseId;
+  }
+
+  public void setResponseId(long responseId) {
+    this.responseId = responseId;
+  }
+
+  public String getTags() {
+    return tags;
+  }
+
+  public void setTags(String tags) {
+    this.tags = tags;
+  }
+
+  public String getLog() {
+    return log;
+  }
+
+  public void setLog(String log) {
+    this.log = log;
+  }
+
+  public String getPkg() {
+    return pkg;
+  }
+
+  public void setPkg(String pkg) {
+    this.pkg = pkg;
+  }
+
+  @Override
+  public String toString() {
+    return "RegistrationResponse{" +
+           "response=" + response +
+           ", responseId=" + responseId +
+           ", statusCommands=" + statusCommands +
+           '}';
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationStatus.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationStatus.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationStatus.java
new file mode 100644
index 0000000..8374710
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/RegistrationStatus.java
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.slider.server.appmaster.web.rest.agent;
+
+public enum RegistrationStatus {
+    OK,
+    FAILED
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/StatusCommand.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/StatusCommand.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/StatusCommand.java
new file mode 100644
index 0000000..5b205b5
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/agent/StatusCommand.java
@@ -0,0 +1,152 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.slider.server.appmaster.web.rest.agent;
+
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.annotate.JsonProperty;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Command to report the status of a list of services in roles.
+ */
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
+public class StatusCommand {
+  public static String STATUS_COMMAND = "STATUS";
+  public static String GET_CONFIG_COMMAND = "GET_CONFIG";
+
+  AgentCommandType agentCommandType;
+
+  private String clusterName;
+  private String serviceName;
+  private String componentName;
+  private Map<String, Map<String, String>> configurations;
+  private Map<String, String> commandParams = new HashMap<String, String>();
+  private Map<String, String> hostLevelParams = new HashMap<String, String>();
+  private String roleCommand;
+  private boolean yarnDockerMode;
+
+  public StatusCommand() {
+    this.agentCommandType = AgentCommandType.STATUS_COMMAND;
+  }
+
+  @JsonProperty("clusterName")
+  public String getClusterName() {
+    return clusterName;
+  }
+
+  @JsonProperty("clusterName")
+  public void setClusterName(String clusterName) {
+    this.clusterName = clusterName;
+  }
+
+  @JsonProperty("serviceName")
+  public String getServiceName() {
+    return serviceName;
+  }
+
+  @JsonProperty("serviceName")
+  public void setServiceName(String serviceName) {
+    this.serviceName = serviceName;
+  }
+
+  @JsonProperty("componentName")
+  public String getComponentName() {
+    return componentName;
+  }
+
+  @JsonProperty("componentName")
+  public void setComponentName(String componentName) {
+    this.componentName = componentName;
+  }
+
+  @JsonProperty("configurations")
+  public Map<String, Map<String, String>> getConfigurations() {
+    return configurations;
+  }
+
+  @JsonProperty("configurations")
+  public void setConfigurations(Map<String, Map<String, String>> configurations) {
+    this.configurations = configurations;
+  }
+
+  @JsonProperty("hostLevelParams")
+  public Map<String, String> getHostLevelParams() {
+    return hostLevelParams;
+  }
+
+  @JsonProperty("hostLevelParams")
+  public void setHostLevelParams(Map<String, String> params) {
+    this.hostLevelParams = params;
+  }
+
+  @JsonProperty("commandParams")
+  public Map<String, String> getCommandParams() {
+    return commandParams;
+  }
+
+  @JsonProperty("commandParams")
+  public void setCommandParams(Map<String, String> commandParams) {
+    this.commandParams = commandParams;
+  }
+
+  @JsonProperty("commandType")
+  public AgentCommandType getCommandType() {
+    return agentCommandType;
+  }
+
+  @JsonProperty("commandType")
+  public void setCommandType(AgentCommandType commandType) {
+    this.agentCommandType = commandType;
+  }
+
+  @JsonProperty("roleCommand")
+  public String getRoleCommand() {
+    return roleCommand;
+  }
+
+  @JsonProperty("roleCommand")
+  public void setRoleCommand(String roleCommand) {
+    this.roleCommand = roleCommand;
+  }
+  
+  @JsonProperty("yarnDockerMode")
+  public boolean isYarnDockerMode() {
+    return yarnDockerMode;
+  }
+
+  @JsonProperty("yarnDockerMode")
+  public void setYarnDockerMode(boolean yarnDockerMode) {
+    this.yarnDockerMode = yarnDockerMode;
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder builder = new StringBuilder();
+    builder.append("StatusCommand [agentCommandType=").append(agentCommandType)
+        .append(", clusterName=").append(clusterName).append(", serviceName=")
+        .append(serviceName).append(", componentName=").append(componentName)
+        .append(", configurations=").append(configurations)
+        .append(", commandParams=").append(commandParams)
+        .append(", hostLevelParams=").append(hostLevelParams)
+        .append(", roleCommand=").append(roleCommand).append("]");
+    return builder.toString();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResouceContentCacheFactory.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResouceContentCacheFactory.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResouceContentCacheFactory.java
new file mode 100644
index 0000000..2facf16
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResouceContentCacheFactory.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application;
+
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+import org.apache.slider.server.appmaster.web.rest.application.resources.AggregateModelRefresher;
+import org.apache.slider.server.appmaster.web.rest.application.resources.AppconfRefresher;
+import org.apache.slider.server.appmaster.web.rest.application.resources.CachedContent;
+import org.apache.slider.server.appmaster.web.rest.application.resources.ContentCache;
+import org.apache.slider.server.appmaster.web.rest.application.resources.LiveComponentsRefresher;
+import org.apache.slider.server.appmaster.web.rest.application.resources.LiveContainersRefresher;
+import org.apache.slider.server.appmaster.web.rest.application.resources.LiveNodesRefresher;
+import org.apache.slider.server.appmaster.web.rest.application.resources.LiveResourcesRefresher;
+import org.apache.slider.server.appmaster.web.rest.application.resources.LiveStatisticsRefresher;
+
+import static org.apache.slider.server.appmaster.web.rest.RestPaths.*;
+
+public class ApplicationResouceContentCacheFactory {
+  public static final int LIFESPAN = 500;
+
+  /**
+   * Build the content cache
+   * @param state state view
+   */
+  public static ContentCache createContentCache(
+      StateAccessForProviders state) {
+    ContentCache cache = new ContentCache();
+    cache.put(LIVE_RESOURCES, new CachedContent<>(LIFESPAN, new LiveResourcesRefresher(state)));
+    cache.put(LIVE_CONTAINERS, new CachedContent<>(LIFESPAN, new LiveContainersRefresher(state)));
+    cache.put(LIVE_COMPONENTS, new CachedContent<>(LIFESPAN, new LiveComponentsRefresher(state)));
+    cache.put(LIVE_NODES, new CachedContent<>(LIFESPAN, new LiveNodesRefresher(state)));
+    cache.put(MODEL_DESIRED,
+        new CachedContent<>(LIFESPAN, new AggregateModelRefresher(state, false)));
+    cache.put(MODEL_RESOLVED,
+        new CachedContent<>(LIFESPAN, new AggregateModelRefresher(state, true)));
+    cache.put(MODEL_RESOLVED_APPCONF,
+        new CachedContent<>(LIFESPAN, new AppconfRefresher(state, false, false)));
+    cache.put(MODEL_RESOLVED_RESOURCES,
+        new CachedContent<>(LIFESPAN, new AppconfRefresher(state, false, true)));
+    cache.put(MODEL_DESIRED_APPCONF,
+        new CachedContent<>(LIFESPAN, new AppconfRefresher(state, true, false)));
+    cache.put(MODEL_DESIRED_RESOURCES,
+        new CachedContent<>(LIFESPAN, new AppconfRefresher(state, true, true)));
+    cache.put(LIVE_STATISTICS, new CachedContent<>(LIFESPAN, new LiveStatisticsRefresher(state)));
+    return cache;
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResource.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResource.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResource.java
new file mode 100644
index 0000000..52068d6
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/ApplicationResource.java
@@ -0,0 +1,516 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application;
+
+import com.google.common.collect.Lists;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
+import org.apache.hadoop.yarn.webapp.BadRequestException;
+import org.apache.hadoop.yarn.webapp.NotFoundException;
+import org.apache.slider.api.types.ApplicationLivenessInformation;
+import org.apache.slider.api.types.ComponentInformation;
+import org.apache.slider.api.types.ContainerInformation;
+import org.apache.slider.api.types.NodeInformation;
+import org.apache.slider.api.types.NodeInformationList;
+import org.apache.slider.core.conf.AggregateConf;
+import org.apache.slider.core.conf.ConfTree;
+import org.apache.slider.core.exceptions.NoSuchNodeException;
+import org.apache.slider.core.persist.ConfTreeSerDeser;
+import org.apache.slider.server.appmaster.actions.ActionFlexCluster;
+import org.apache.slider.server.appmaster.actions.AsyncAction;
+import org.apache.slider.server.appmaster.actions.QueueAccess;
+import org.apache.slider.server.appmaster.state.RoleInstance;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+import org.apache.slider.server.appmaster.web.WebAppApi;
+import org.apache.slider.server.appmaster.web.rest.AbstractSliderResource;
+import static org.apache.slider.server.appmaster.web.rest.RestPaths.*;
+
+import org.apache.slider.server.appmaster.web.rest.application.actions.RestActionStop;
+import org.apache.slider.server.appmaster.web.rest.application.actions.StopResponse;
+import org.apache.slider.server.appmaster.web.rest.application.resources.ContentCache;
+import org.apache.slider.server.appmaster.web.rest.application.actions.RestActionPing;
+import org.apache.slider.api.types.PingInformation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.inject.Singleton;
+import javax.servlet.http.HttpServletRequest;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.HEAD;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Context;
+
+import static javax.ws.rs.core.MediaType.*;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+@Singleton
+@SuppressWarnings("unchecked")
+public class ApplicationResource extends AbstractSliderResource {
+  private static final Logger log =
+      LoggerFactory.getLogger(ApplicationResource.class);
+
+  public static final List<String> LIVE_ENTRIES = toJsonList("resources",
+      "containers",
+      "components",
+      "nodes",
+      "statistics",
+      "internal");
+
+  public static final List<String> ROOT_ENTRIES =
+      toJsonList("model", "live", "actions");
+
+  public static final List<String> MODEL_ENTRIES =
+      toJsonList("desired", "resolved");
+
+  /**
+   * This is the cache of all content ... each entry is
+   * designed to be self-refreshing on get operations, 
+   * so is never very out of date, yet many GETs don't
+   * overload the rest of the system.
+   */
+  private final ContentCache cache;
+  private final StateAccessForProviders state;
+  private final QueueAccess actionQueues;
+
+  public ApplicationResource(WebAppApi slider) {
+    super(slider);
+    state = slider.getAppState();
+    cache = slider.getContentCache();
+    actionQueues = slider.getQueues();
+  }
+
+  /**
+   * Build a new JSON-marshallable list of string elements
+   * @param elements elements
+   * @return something that can be returned
+   */
+  private static List<String> toJsonList(String... elements) {
+    return Lists.newArrayList(elements);
+  }
+
+  @GET
+  @Path("/")
+  @Produces({APPLICATION_JSON})
+  public List<String> getRoot() {
+    markGet(SLIDER_SUBPATH_APPLICATION);
+    return ROOT_ENTRIES;
+  }
+
+  /**
+   * Enum model values: desired and resolved
+   * @return the desired and resolved model
+   */
+  @GET
+  @Path(MODEL)
+  @Produces({APPLICATION_JSON})
+  public List<String> getModel() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL);
+    return MODEL_ENTRIES;
+  }
+
+  @GET
+  @Path(MODEL_DESIRED)
+  @Produces({APPLICATION_JSON})
+  public AggregateConf getModelDesired() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL_DESIRED);
+    return lookupAggregateConf(MODEL_DESIRED);
+  }
+  
+  @GET
+  @Path(MODEL_DESIRED_APPCONF)
+  @Produces({APPLICATION_JSON})
+  public ConfTree getModelDesiredAppconf() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL_DESIRED_APPCONF);
+    return lookupConfTree(MODEL_DESIRED_APPCONF);
+  }
+
+  @GET
+  @Path(MODEL_DESIRED_RESOURCES)
+  @Produces({APPLICATION_JSON})
+  public ConfTree getModelDesiredResources() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL_DESIRED_RESOURCES);
+    return lookupConfTree(MODEL_DESIRED_RESOURCES);
+  }
+
+/*
+  @PUT
+  @Path(MODEL_DESIRED_RESOURCES)
+//  @Consumes({APPLICATION_JSON, TEXT_PLAIN})
+  @Consumes({TEXT_PLAIN})
+  @Produces({APPLICATION_JSON})
+*/
+  public ConfTree setModelDesiredResources(
+      String json) {
+    markPut(SLIDER_SUBPATH_APPLICATION, MODEL_DESIRED_RESOURCES);
+    int size = json != null ? json.length() : 0;
+    log.info("PUT {} {} bytes:\n{}", MODEL_DESIRED_RESOURCES,
+        size,
+        json);
+    if (size == 0) {
+      log.warn("No JSON in PUT request; rejecting");
+      throw new BadRequestException("No JSON in PUT");
+    }
+    
+    try {
+      ConfTreeSerDeser serDeser = new ConfTreeSerDeser();
+      ConfTree updated = serDeser.fromJson(json);
+      queue(new ActionFlexCluster("flex",
+          1, TimeUnit.MILLISECONDS,
+          updated));
+      // return the updated value, even though it potentially hasn't yet
+      // been executed
+      return updated;
+    } catch (Exception e) {
+      throw buildException("PUT to "+ MODEL_DESIRED_RESOURCES , e);
+    }
+  }
+  @PUT
+  @Path(MODEL_DESIRED_RESOURCES)
+  @Consumes({APPLICATION_JSON})
+  @Produces({APPLICATION_JSON})
+  public ConfTree setModelDesiredResources(
+      ConfTree updated) {
+    try {
+      queue(new ActionFlexCluster("flex",
+          1, TimeUnit.MILLISECONDS,
+          updated));
+      // return the updated value, even though it potentially hasn't yet
+      // been executed
+      return updated;
+    } catch (Exception e) {
+      throw buildException("PUT to "+ MODEL_DESIRED_RESOURCES , e);
+    }
+  }
+  
+  
+
+  @GET
+  @Path(MODEL_RESOLVED)
+  @Produces({APPLICATION_JSON})
+  public AggregateConf getModelResolved() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL_RESOLVED);
+    return lookupAggregateConf(MODEL_RESOLVED);
+  }
+
+  @GET
+  @Path(MODEL_RESOLVED_APPCONF)
+  @Produces({APPLICATION_JSON})
+  public ConfTree getModelResolvedAppconf() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL_RESOLVED_APPCONF);
+    return lookupConfTree(MODEL_RESOLVED_APPCONF);
+  }
+
+  @GET
+  @Path(MODEL_RESOLVED_RESOURCES)
+  @Produces({APPLICATION_JSON})
+  public ConfTree getModelResolvedResources() {
+    markGet(SLIDER_SUBPATH_APPLICATION, MODEL_RESOLVED_RESOURCES);
+    return lookupConfTree(MODEL_RESOLVED_RESOURCES);
+  }
+  
+  @GET
+  @Path(LIVE)
+  @Produces({APPLICATION_JSON})
+  public List<String> getLive() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE);
+    return LIVE_ENTRIES;
+  }
+
+  @GET
+  @Path(LIVE_RESOURCES)
+  @Produces({APPLICATION_JSON})
+  public ConfTree getLiveResources() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_RESOURCES);
+    return lookupConfTree(LIVE_RESOURCES);
+  }
+  
+  @GET
+  @Path(LIVE_CONTAINERS)
+  @Produces({APPLICATION_JSON})
+  public Map<String, ContainerInformation> getLiveContainers() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_CONTAINERS);
+    try {
+      return (Map<String, ContainerInformation>)cache.lookup(
+          LIVE_CONTAINERS);
+    } catch (Exception e) {
+      throw buildException(LIVE_CONTAINERS, e);
+    }
+  }
+
+  @GET
+  @Path(LIVE_CONTAINERS + "/{containerId}")
+  @Produces({APPLICATION_JSON})
+  public ContainerInformation getLiveContainer(
+      @PathParam("containerId") String containerId) {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_CONTAINERS);
+    try {
+      RoleInstance id = state.getLiveInstanceByContainerID(containerId);
+      return id.serialize();
+    } catch (NoSuchNodeException e) {
+      throw new NotFoundException("Unknown container: " + containerId);
+    } catch (Exception e) {
+      throw buildException(LIVE_CONTAINERS + "/"+ containerId, e);
+    }
+  }
+
+  @GET
+  @Path(LIVE_COMPONENTS)
+  @Produces({APPLICATION_JSON})
+  public Map<String, ComponentInformation> getLiveComponents() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_COMPONENTS);
+    try {
+      return (Map<String, ComponentInformation>) cache.lookup(LIVE_COMPONENTS);
+    } catch (Exception e) {
+      throw buildException(LIVE_COMPONENTS, e);
+    }
+  }
+  
+  @GET
+  @Path(LIVE_COMPONENTS + "/{component}")
+  @Produces({APPLICATION_JSON})
+  public ComponentInformation getLiveComponent(
+      @PathParam("component") String component) {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_COMPONENTS);
+    try {
+      return state.getComponentInformation(component);
+    } catch (YarnRuntimeException e) {
+      throw new NotFoundException("Unknown component: " + component);
+    } catch (Exception e) {
+      throw buildException(LIVE_CONTAINERS +"/" + component, e);
+    }
+  }
+
+  /**
+   * Liveness information for the application as a whole
+   * @return snapshot of liveness
+   */
+  @GET
+  @Path(LIVE_LIVENESS)
+  @Produces({APPLICATION_JSON})
+  public ApplicationLivenessInformation getLivenessInformation() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_LIVENESS);
+    try {
+      return state.getApplicationLivenessInformation();
+    } catch (Exception e) {
+      throw buildException(LIVE_CONTAINERS, e);
+    }
+  }
+
+/*
+TODO: decide what structure to return here, then implement
+
+  @GET
+  @Path(LIVE_LIVENESS + "/{component}")
+  @Produces({APPLICATION_JSON})
+  public ApplicationLivenessInformation getLivenessForComponent(
+      @PathParam("component") String component) {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_COMPONENTS);
+    try {
+      RoleStatus roleStatus = state.lookupRoleStatus(component);
+      ApplicationLivenessInformation info = new ApplicationLivenessInformation();
+      info.requested = roleStatus.getRequested();
+      info.allRequestsSatisfied = info.requested == 0;
+      return info;
+    } catch (YarnRuntimeException e) {
+      throw new NotFoundException("Unknown component: " + component);
+    } catch (Exception e) {
+      throw buildException(LIVE_LIVENESS + "/" + component, e);
+    }
+  }
+*/
+
+
+  @GET
+  @Path(LIVE_NODES)
+  @Produces({APPLICATION_JSON})
+  public NodeInformationList getLiveNodes() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_COMPONENTS);
+    try {
+      return (NodeInformationList) cache.lookup(LIVE_NODES);
+    } catch (Exception e) {
+      throw buildException(LIVE_COMPONENTS, e);
+    }
+  }
+
+  @GET
+  @Path(LIVE_NODES + "/{hostname}")
+  @Produces({APPLICATION_JSON})
+  public NodeInformation getLiveNode(@PathParam("hostname") String hostname) {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_COMPONENTS);
+    try {
+      NodeInformation ni = state.getNodeInformation(hostname);
+      if (ni != null) {
+        return ni;
+      } else {
+        throw new NotFoundException("Unknown node: " + hostname);
+      }
+    } catch (NotFoundException e) {
+      throw e;
+    } catch (Exception e) {
+      throw buildException(LIVE_COMPONENTS + "/" + hostname, e);
+    }
+  }
+
+  /**
+   * Statistics of the application
+   * @return snapshot statistics
+   */
+  @GET
+  @Path(LIVE_STATISTICS)
+  @Produces({APPLICATION_JSON})
+  public Map<String, Integer> getLiveStatistics() {
+    markGet(SLIDER_SUBPATH_APPLICATION, LIVE_LIVENESS);
+    try {
+      return (Map<String, Integer>) cache.lookup(LIVE_STATISTICS);
+    } catch (Exception e) {
+      throw buildException(LIVE_STATISTICS, e);
+    }
+  }
+
+  /**
+   * Helper method; look up an aggregate configuration in the cache from
+   * a key, or raise an exception
+   * @param key key to resolve
+   * @return the configuration
+   * @throws WebApplicationException on a failure
+   */
+  protected AggregateConf lookupAggregateConf(String key) {
+    try {
+      return (AggregateConf) cache.lookup(key);
+    } catch (Exception e) {
+      throw buildException(key, e);
+    }
+  }
+
+
+  /**
+   * Helper method; look up an conf tree in the cache from
+   * a key, or raise an exception
+   * @param key key to resolve
+   * @return the configuration
+   * @throws WebApplicationException on a failure
+   */
+  protected ConfTree lookupConfTree(String key) {
+    try {
+      return (ConfTree) cache.lookup(key);
+    } catch (Exception e) {
+      throw buildException(key, e);
+    }
+  }
+
+  /* ************************************************************************
+  
+  ACTION PING
+  
+  **************************************************************************/
+  
+  @GET
+  @Path(ACTION_PING)
+  @Produces({APPLICATION_JSON})
+  public PingInformation actionPingGet(@Context HttpServletRequest request,
+      @Context UriInfo uriInfo) {
+    markGet(SLIDER_SUBPATH_APPLICATION, ACTION_PING);
+    return new RestActionPing().ping(request, uriInfo, "");
+  }
+  
+  @POST
+  @Path(ACTION_PING)
+  @Produces({APPLICATION_JSON})
+  public PingInformation actionPingPost(@Context HttpServletRequest request,
+      @Context UriInfo uriInfo,
+      String body) {
+    markPost(SLIDER_SUBPATH_APPLICATION, ACTION_PING);
+    return new RestActionPing().ping(request, uriInfo, body);
+  }
+  
+  @PUT
+  @Path(ACTION_PING)
+  @Consumes({TEXT_PLAIN})
+  @Produces({APPLICATION_JSON})
+  public PingInformation actionPingPut(@Context HttpServletRequest request,
+      @Context UriInfo uriInfo,
+      String body) {
+    markPut(SLIDER_SUBPATH_APPLICATION, ACTION_PING);
+    return new RestActionPing().ping(request, uriInfo, body);
+  }
+  
+  @DELETE
+  @Path(ACTION_PING)
+  @Consumes({APPLICATION_JSON})
+  @Produces({APPLICATION_JSON})
+  public PingInformation actionPingDelete(@Context HttpServletRequest request,
+      @Context UriInfo uriInfo) {
+    markDelete(SLIDER_SUBPATH_APPLICATION, ACTION_PING);
+    return new RestActionPing().ping(request, uriInfo, "");
+  }
+  
+  @HEAD
+  @Path(ACTION_PING)
+  public Object actionPingHead(@Context HttpServletRequest request,
+      @Context UriInfo uriInfo) {
+    mark("HEAD", SLIDER_SUBPATH_APPLICATION, ACTION_PING);
+    return new RestActionPing().ping(request, uriInfo, "");
+  }
+  
+  /* ************************************************************************
+  
+  ACTION STOP
+  
+  **************************************************************************/
+
+
+  @POST
+  @Path(ACTION_STOP)
+  @Produces({APPLICATION_JSON})
+  public StopResponse actionStop(@Context HttpServletRequest request,
+      @Context UriInfo uriInfo,
+      String body) {
+    markPost(SLIDER_SUBPATH_APPLICATION, ACTION_STOP);
+    return new RestActionStop(slider).stop(request, uriInfo, body);
+  }
+
+  /**
+   * Schedule an action
+   * @param action for delayed execution
+   */
+  public void schedule(AsyncAction action) {
+    actionQueues.schedule(action);
+  }
+
+  /**
+   * Put an action on the immediate queue -to be executed when the queue
+   * reaches it.
+   * @param action action to queue
+   */
+  public void queue(AsyncAction action) {
+    actionQueues.put(action);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionPing.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionPing.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionPing.java
new file mode 100644
index 0000000..96b4f75
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionPing.java
@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.actions;
+
+import org.apache.slider.api.types.PingInformation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.ws.rs.core.UriInfo;
+import java.util.Locale;
+
+public class RestActionPing {
+  private static final Logger log =
+      LoggerFactory.getLogger(RestActionPing.class);
+
+  public RestActionPing() {
+  }
+  
+  public PingInformation ping(HttpServletRequest request, UriInfo uriInfo, String body) {
+    String verb = request.getMethod();
+    log.info("Ping {}", verb);
+    PingInformation pingInformation = new PingInformation();
+    pingInformation.time = System.currentTimeMillis();
+    pingInformation.verb = verb;
+    pingInformation.body = body;
+    String text = 
+        String.format(Locale.ENGLISH,
+            "Ping verb %s received at %tc",
+            verb, pingInformation.time);
+    pingInformation.text = text;
+    return pingInformation;
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionStop.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionStop.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionStop.java
new file mode 100644
index 0000000..544f589
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/RestActionStop.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.actions;
+
+import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
+import org.apache.slider.core.main.LauncherExitCodes;
+import org.apache.slider.server.appmaster.actions.ActionStopSlider;
+import org.apache.slider.server.appmaster.web.WebAppApi;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.ws.rs.core.UriInfo;
+import java.util.Locale;
+import java.util.concurrent.TimeUnit;
+
+public class RestActionStop {
+  private static final Logger log =
+      LoggerFactory.getLogger(RestActionStop.class);
+
+  private final WebAppApi slider;
+  
+  public RestActionStop(WebAppApi slider) {
+    this.slider = slider;
+  }
+  
+  public StopResponse stop(HttpServletRequest request, UriInfo uriInfo, String body) {
+    String verb = request.getMethod();
+    log.info("Ping {}", verb);
+    StopResponse response = new StopResponse();
+    response.verb = verb;
+    long time = System.currentTimeMillis();
+    String text = 
+        String.format(Locale.ENGLISH,
+            "Stopping action %s received at %tc",
+            verb, time);
+    response.text = text;
+    log.info(text);
+    ActionStopSlider stopSlider =
+        new ActionStopSlider(text,
+            1000,
+            TimeUnit.MILLISECONDS,
+            LauncherExitCodes.EXIT_SUCCESS,
+            FinalApplicationStatus.SUCCEEDED,
+            text);
+    log.info("SliderAppMasterApi.stopCluster: {}", stopSlider);
+    slider.getQueues().schedule(stopSlider);
+    
+    return response;
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/StopResponse.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/StopResponse.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/StopResponse.java
new file mode 100644
index 0000000..9af6a22
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/actions/StopResponse.java
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.actions;
+
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
+public class StopResponse {
+  String verb;
+  public String text;
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/package-info.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/package-info.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/package-info.java
new file mode 100644
index 0000000..34eb82c
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/package-info.java
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/**
+ * This package contains resources related to the application
+ * REST API
+ */
+package org.apache.slider.server.appmaster.web.rest.application;
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AggregateModelRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AggregateModelRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AggregateModelRefresher.java
new file mode 100644
index 0000000..ee28abf
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AggregateModelRefresher.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.core.conf.AggregateConf;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+/**
+ * Refresh the aggregate desired model via
+ * {@link StateAccessForProviders#getInstanceDefinitionSnapshot()}
+ */
+public class AggregateModelRefresher
+    implements ResourceRefresher<AggregateConf> {
+
+  private final StateAccessForProviders state;
+  private final boolean resolved;
+
+  public AggregateModelRefresher(StateAccessForProviders state,
+      boolean resolved) {
+    this.state = state;
+    this.resolved = resolved;
+  }
+
+  @Override
+  public AggregateConf refresh() throws Exception {
+    return
+        resolved ?
+          state.getInstanceDefinitionSnapshot()
+          : state.getUnresolvedInstanceDefinition();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AppconfRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AppconfRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AppconfRefresher.java
new file mode 100644
index 0000000..06460cc
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/AppconfRefresher.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.core.conf.AggregateConf;
+import org.apache.slider.core.conf.ConfTree;
+import org.apache.slider.core.persist.ConfTreeSerDeser;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+/**
+ * refresher for resources and application configuration
+ */
+public class AppconfRefresher
+    implements ResourceRefresher<ConfTree> {
+
+  private final StateAccessForProviders state;
+  private final boolean unresolved;
+  private final boolean resources;
+
+  public AppconfRefresher(StateAccessForProviders state,
+      boolean unresolved,
+      boolean resources) {
+    this.state = state;
+    this.unresolved = unresolved;
+    this.resources = resources;
+  }
+
+
+  @Override
+  public ConfTree refresh() throws Exception {
+    AggregateConf aggregateConf =
+        unresolved ?
+        state.getUnresolvedInstanceDefinition():
+        state.getInstanceDefinitionSnapshot();
+    ConfTree ct = resources ? aggregateConf.getResources() 
+                            : aggregateConf.getAppConf();
+    return new ConfTreeSerDeser().fromInstance(ct);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/CachedContent.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/CachedContent.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/CachedContent.java
new file mode 100644
index 0000000..22fd0fe
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/CachedContent.java
@@ -0,0 +1,121 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import com.google.common.base.Preconditions;
+import org.apache.hadoop.util.Time;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * A cached resource is one that can be stored and served up, with a refresh 
+ * only taking place when the expiry happens.
+ * 
+ * The refresh check/refresh is synchronized.
+ * @param <T> type to return
+ */
+public class CachedContent<T> {
+  private static final Logger log =
+      LoggerFactory.getLogger(CachedContent.class);
+  private T cachedValue;
+  private long expires;
+  private final long lifespan;
+  private final ResourceRefresher<T> refresh;
+  private int refreshCounter;
+
+  public CachedContent(long lifespan,
+      ResourceRefresher<T> refresh) {
+    this.lifespan = lifespan;
+    this.refresh = refresh;
+  }
+
+  /**
+   * Get the value, triggering a refresh if needed
+   * @return the cached or latest value.
+   */
+  public T get() throws Exception {
+    maybeRefresh();
+    return getCachedValue();
+  }
+
+  /**
+   * Get the cached value without any expiry check
+   * @return the last value set. May be null.
+   */
+  public synchronized T getCachedValue() {
+    return cachedValue;
+  }
+
+  public synchronized int getRefreshCounter() {
+    return refreshCounter;
+  }
+
+  /**
+   * Get the lifespan in millis of the cached value
+   * @return the lifespan
+   */
+  public long getLifespan() {
+    return lifespan;
+  }
+
+  /**
+   * Maybe refresh the content
+   * @return true if a refresh took place.
+   */
+  public synchronized boolean maybeRefresh() throws Exception {
+    long now = now();
+    if (cachedValue == null || now >= expires) {
+      log.debug("Refreshing at time {}", now);
+      forceRefresh();
+      log.debug("Refreshed value now {}", cachedValue);
+      return true;
+    }
+    return false;
+  }
+
+  protected long now() {
+    return Time.monotonicNow();
+  }
+
+  /**
+   * Force a refresh and reset the expiry counter
+   * @return the new value
+   */
+  protected synchronized T forceRefresh() throws Exception {
+    refreshCounter ++;
+    T updated = refresh.refresh();
+    Preconditions.checkNotNull(updated);
+    cachedValue = updated;
+    expires = now() + lifespan;
+    return cachedValue;
+  }
+
+  @Override
+  public String toString() {
+    final StringBuilder sb =
+        new StringBuilder("CachedContent{");
+    sb.append("  expires=").append(expires);
+    sb.append(", lifespan=").append(lifespan);
+    sb.append(", refresh=").append(refresh);
+    sb.append(", refreshCounter=").append(refreshCounter);
+    sb.append(", cached=").append(cachedValue);
+    sb.append('}');
+    return sb.toString();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ContentCache.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ContentCache.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ContentCache.java
new file mode 100644
index 0000000..8f026a1
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ContentCache.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Cache of content
+ */
+public class ContentCache extends ConcurrentHashMap<String, CachedContent> {
+
+  public ContentCache(int initialCapacity) {
+    super(initialCapacity);
+  }
+
+  public ContentCache() {
+  }
+
+
+  public Object lookup(String key) throws Exception {
+    CachedContent content = get(key);
+    if (content == null) {
+      throw new FileNotFoundException("no content for path " + key);
+    }
+    return content.get();
+  }
+
+
+  /**
+   * Lookup a cached item. If an exception is raised on the refresh...
+   * <ol>
+   *   <li>IOExceptions are thrown directly</li>
+   *   <li>Other exceptions are wrapped with an IOExceptions</li>
+   * </ol>
+   * @param key
+   * @return
+   * @throws IOException
+   */
+  public Object lookupWithIOE(String key) throws IOException {
+    try {
+      return lookup(key);
+    } catch (IOException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IOException("Looking up " + key + ": " + e, e);
+    }
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveComponentsRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveComponentsRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveComponentsRefresher.java
new file mode 100644
index 0000000..b6627a7
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveComponentsRefresher.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.api.types.ComponentInformation;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+import java.util.Map;
+
+public class LiveComponentsRefresher
+    implements ResourceRefresher<Map<String, ComponentInformation>> {
+
+  private final StateAccessForProviders state;
+
+  public LiveComponentsRefresher(StateAccessForProviders state) {
+    this.state = state;
+  }
+
+  @Override
+  public Map<String, ComponentInformation> refresh() {
+    return state.getComponentInfoSnapshot();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveContainersRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveContainersRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveContainersRefresher.java
new file mode 100644
index 0000000..68bd8a2
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveContainersRefresher.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.api.types.ContainerInformation;
+import org.apache.slider.server.appmaster.state.RoleInstance;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Refresh the container list.
+ */
+public class LiveContainersRefresher implements ResourceRefresher<Map<String, ContainerInformation>> {
+
+  private final StateAccessForProviders state;
+
+  public LiveContainersRefresher(StateAccessForProviders state) {
+    this.state = state;
+  }
+
+  @Override
+  public Map<String, ContainerInformation> refresh() throws
+      Exception {
+    List<RoleInstance> containerList = state.cloneOwnedContainerList();
+
+    Map<String, ContainerInformation> map = new HashMap<>();
+    for (RoleInstance instance : containerList) {
+      ContainerInformation serialized = instance.serialize();
+      map.put(serialized.containerId, serialized);
+    }
+    return map;
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveNodesRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveNodesRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveNodesRefresher.java
new file mode 100644
index 0000000..aeb7a11
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveNodesRefresher.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.api.types.NodeInformationList;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+/**
+ * Update the live nodes map
+ */
+public class LiveNodesRefresher
+    implements ResourceRefresher<NodeInformationList> {
+
+  private final StateAccessForProviders state;
+
+  public LiveNodesRefresher(StateAccessForProviders state) {
+    this.state = state;
+  }
+
+  @Override
+  public NodeInformationList refresh() {
+
+    return new NodeInformationList(state.getNodeInformationSnapshot().values());
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveResourcesRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveResourcesRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveResourcesRefresher.java
new file mode 100644
index 0000000..f988297
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveResourcesRefresher.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.api.StatusKeys;
+import org.apache.slider.core.conf.ConfTree;
+import org.apache.slider.core.conf.ConfTreeOperations;
+import org.apache.slider.server.appmaster.state.RoleStatus;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+import java.util.Map;
+
+public class LiveResourcesRefresher implements ResourceRefresher<ConfTree> {
+
+  private final StateAccessForProviders state;
+
+  public LiveResourcesRefresher(StateAccessForProviders state) {
+    this.state = state;
+  }
+
+  @Override
+  public ConfTree refresh() throws Exception {
+
+    // snapshot resources
+    ConfTreeOperations resources = state.getResourcesSnapshot();
+    // then add actual values
+    Map<Integer, RoleStatus> roleStatusMap = state.getRoleStatusMap();
+    
+    for (RoleStatus status : roleStatusMap.values()) {
+      String name = status.getName();
+      resources.setComponentOpt(name,
+          StatusKeys.COMPONENT_INSTANCES_REQUESTING,
+          status.getRequested());
+      resources.setComponentOpt(name,
+          StatusKeys.COMPONENT_INSTANCES_ACTUAL,
+          status.getActual());
+      resources.setComponentOpt(name,
+          StatusKeys.COMPONENT_INSTANCES_RELEASING,
+          status.getReleasing());
+      resources.setComponentOpt(name,
+          StatusKeys.COMPONENT_INSTANCES_FAILED,
+          status.getFailed());
+      resources.setComponentOpt(name,
+          StatusKeys.COMPONENT_INSTANCES_COMPLETED,
+          status.getCompleted());
+      resources.setComponentOpt(name,
+          StatusKeys.COMPONENT_INSTANCES_STARTED,
+          status.getStarted());
+    }
+    return resources.getConfTree();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveStatisticsRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveStatisticsRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveStatisticsRefresher.java
new file mode 100644
index 0000000..d31b455
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/LiveStatisticsRefresher.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+import java.util.Map;
+
+public class LiveStatisticsRefresher implements ResourceRefresher<Map<String,Integer>> {
+
+  private final StateAccessForProviders state;
+
+  public LiveStatisticsRefresher(StateAccessForProviders state) {
+    this.state = state;
+  }
+
+  @Override
+  public Map<String, Integer> refresh() throws Exception {
+
+    // snapshot resources
+    return state.getLiveStatistics();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceRefresher.java
new file mode 100644
index 0000000..35f0367
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceRefresher.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+/**
+ * Interface which must be implemented to act as a source for cached content.
+ * @param <T> type to return
+ */
+public interface ResourceRefresher<T> {
+  /**
+   * Build an up to date version of the data
+   * @return a new instance of the (JSON serializable) data
+   */
+  T refresh() throws Exception;
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceSnapshotRefresher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceSnapshotRefresher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceSnapshotRefresher.java
new file mode 100644
index 0000000..c16912a
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/application/resources/ResourceSnapshotRefresher.java
@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.application.resources;
+
+import org.apache.slider.core.conf.ConfTree;
+import org.apache.slider.core.conf.ConfTreeOperations;
+import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+
+public class ResourceSnapshotRefresher implements ResourceRefresher<ConfTree> {
+
+  private final StateAccessForProviders state;
+
+  public ResourceSnapshotRefresher(StateAccessForProviders state) {
+    this.state = state;
+  }
+
+  @Override
+  public ConfTree refresh() throws Exception {
+
+    // snapshot resources
+    ConfTreeOperations resources = state.getResourcesSnapshot();
+      return resources.getConfTree();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/ManagementResource.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/ManagementResource.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/ManagementResource.java
new file mode 100644
index 0000000..f27711a
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/ManagementResource.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.slider.server.appmaster.web.rest.management;
+
+import org.apache.slider.core.conf.AggregateConf;
+import org.apache.slider.server.appmaster.web.WebAppApi;
+import org.apache.slider.server.appmaster.web.rest.AbstractSliderResource;
+import org.apache.slider.server.appmaster.web.rest.RestPaths;
+import org.apache.slider.server.appmaster.web.rest.management.resources.AggregateConfResource;
+import org.apache.slider.server.appmaster.web.rest.management.resources.ConfTreeResource;
+import org.apache.slider.server.appmaster.web.rest.management.resources.ResourceFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+import java.net.URI;
+import java.net.URL;
+
+/**
+ *
+ */
+public class ManagementResource extends AbstractSliderResource {
+  protected static final Logger log =
+      LoggerFactory.getLogger(ManagementResource.class);
+  public static final String CONFIG = "config";
+  public static final String APP_UNDER_MANAGEMENT = "/app";
+
+  public ManagementResource(WebAppApi slider) {
+    super(slider);
+  }
+
+  private void init(HttpServletResponse res) {
+    res.setContentType(null);
+  }
+
+  @GET
+  public Response getWadl (@Context HttpServletRequest request) {
+    return redirectToAppWadl(request);
+  }
+
+  @GET
+  @Path("/app")
+  @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
+  public AggregateConfResource getAggregateConfiguration(@Context UriInfo uriInfo,
+                                                         @Context HttpServletResponse res) {
+    init(res);
+    return ResourceFactory.createAggregateConfResource(getAggregateConf(),
+                                                       uriInfo.getAbsolutePathBuilder());
+  }
+
+  @GET
+  @Path(APP_UNDER_MANAGEMENT+"/configurations/{config}")
+  @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
+  public ConfTreeResource getConfTreeResource(@PathParam(CONFIG) String config,
+                                              @Context UriInfo uriInfo,
+                                              @Context HttpServletResponse res) {
+    init(res);
+    AggregateConfResource aggregateConf =
+        ResourceFactory.createAggregateConfResource(getAggregateConf(),
+      uriInfo.getBaseUriBuilder()
+      .path(RestPaths.SLIDER_CONTEXT_ROOT)
+      .path(RestPaths.MANAGEMENT + APP_UNDER_MANAGEMENT));
+    return aggregateConf.getConfTree(config);
+  }
+
+  protected AggregateConf getAggregateConf() {
+    return slider.getAppState().getInstanceDefinitionSnapshot();
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/ActionsResource.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/ActionsResource.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/ActionsResource.java
new file mode 100644
index 0000000..9b340fa
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/ActionsResource.java
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.slider.server.appmaster.web.rest.management.resources;
+
+public class ActionsResource {
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/31c4a419/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/AggregateConfResource.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/AggregateConfResource.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/AggregateConfResource.java
new file mode 100644
index 0000000..794daf9
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/web/rest/management/resources/AggregateConfResource.java
@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.slider.server.appmaster.web.rest.management.resources;
+
+import org.apache.slider.core.conf.AggregateConf;
+import org.codehaus.jackson.annotate.JsonIgnore;
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
+
+import javax.ws.rs.core.UriBuilder;
+import java.util.HashMap;
+import java.util.Map;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
+public class AggregateConfResource {
+  private String href;
+  private final ConfTreeResource resources;
+  private final ConfTreeResource internal;
+  private final ConfTreeResource appConf;
+  @JsonIgnore
+  private Map<String, ConfTreeResource> confMap;
+
+  public AggregateConfResource(AggregateConf conf, UriBuilder uriBuilder) {
+    if (uriBuilder != null) {
+      this.href = uriBuilder.build().toASCIIString();
+      resources = ResourceFactory.createConfTreeResource(conf.getResources(),
+                   uriBuilder.clone().path("configurations").path("resources"));
+      internal = ResourceFactory.createConfTreeResource(conf.getInternal(),
+                   uriBuilder.clone().path("configurations").path("internal"));
+      appConf = ResourceFactory.createConfTreeResource(conf.getAppConf(),
+                   uriBuilder.clone().path("configurations").path("appConf"));
+      initConfMap();
+    } else {
+      resources = null;
+      internal = null;
+      appConf = null;
+    }
+  }
+
+  private void initConfMap() {
+    confMap = new HashMap<>();
+    confMap.put("internal", internal);
+    confMap.put("resources", resources);
+    confMap.put("appConf", appConf);
+  }
+
+  public AggregateConfResource() {
+    this(null, null);
+  }
+
+  public ConfTreeResource getConfTree(String name) {
+    return confMap.get(name);
+  }
+
+  public String getHref() {
+    return href;
+  }
+
+  public void setHref(String href) {
+    this.href = href;
+  }
+
+  public ConfTreeResource getResources() {
+    return resources;
+  }
+
+  public ConfTreeResource getInternal() {
+    return internal;
+  }
+
+  public ConfTreeResource getAppConf() {
+    return appConf;
+  }
+
+}


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