nwangtw commented on a change in pull request #2842: Add json format for dry-run URL: https://github.com/apache/incubator-heron/pull/2842#discussion_r178995626
########## File path: heron/scheduler-core/src/java/com/twitter/heron/scheduler/dryrun/JsonFormatterUtils.java ########## @@ -0,0 +1,87 @@ +// Copyright 2018 Twitter. All rights reserved. +// +// Licensed 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 com.twitter.heron.scheduler.dryrun; + +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.node.ArrayNode; +import com.fasterxml.jackson.databind.node.ObjectNode; + +import com.twitter.heron.spi.packing.PackingPlan; +import com.twitter.heron.spi.packing.Resource; + +public class JsonFormatterUtils { + + private final ObjectMapper mapper; + + public JsonFormatterUtils() { + mapper = new ObjectMapper(); + } + + public String renderPackingPlan(String topologyName, String packingClass, + PackingPlan packingPlan) throws JsonProcessingException { + ObjectNode topLevel = mapper.createObjectNode(); + topLevel.put("packingClass", packingClass); + topLevel.put("topology", topologyName); + + ArrayNode containers = mapper.createArrayNode(); + + for (PackingPlan.ContainerPlan containerPlan : packingPlan.getContainers()) { + ObjectNode planNode = mapper.createObjectNode(); + planNode.put("taskId", containerPlan.getId()); + containers.add(renderContainerPlan(containerPlan)); + } + + topLevel.set("containers", containers); + + return mapper.writeValueAsString(topLevel); + } + + ObjectNode renderContainerPlan(PackingPlan.ContainerPlan containerPlan) { + Resource requiredResources = containerPlan.getRequiredResource(); + ObjectNode resources = mapper.createObjectNode(); + resources.put("cpu", requiredResources.getCpu()); + resources.put("ram", requiredResources.getRam().asBytes()); Review comment: I think the output of toString() might be more readable than asBytes() if it works here. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
