com.linkedin.pinot.controller.api.restlet.resources.PinotInstance.java Source code

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Here is the source code for com.linkedin.pinot.controller.api.restlet.resources.PinotInstance.java

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/**
 * Copyright (C) 2014-2015 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * 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.linkedin.pinot.controller.api.restlet.resources;

import org.apache.commons.lang3.exception.ExceptionUtils;
import org.restlet.data.MediaType;
import org.restlet.data.Status;
import org.restlet.representation.Representation;
import org.restlet.representation.StringRepresentation;
import org.restlet.representation.Variant;
import org.restlet.resource.Get;
import org.restlet.resource.Post;
import org.restlet.resource.ServerResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.io.ByteStreams;
import com.linkedin.pinot.controller.ControllerConf;
import com.linkedin.pinot.controller.api.pojos.Instance;
import com.linkedin.pinot.controller.helix.core.PinotHelixResourceManager;
import com.linkedin.pinot.controller.helix.core.PinotResourceManagerResponse;

/**
 * Sep 30, 2014
 *
 */

public class PinotInstance extends ServerResource {
    private static final Logger LOGGER = LoggerFactory.getLogger(PinotInstance.class);

    private static final String INSTANCE_NAME = "instanceName";
    private static final String STATUS = "status";
    private static final String DISABLE = "disable";
    private static final String ENABLE = "enable";

    private final PinotHelixResourceManager manager;
    private final ObjectMapper mapper;

    public PinotInstance() {
        getVariants().add(new Variant(MediaType.TEXT_PLAIN));
        getVariants().add(new Variant(MediaType.APPLICATION_JSON));
        setNegotiated(false);
        manager = (PinotHelixResourceManager) getApplication().getContext().getAttributes()
                .get(PinotHelixResourceManager.class.toString());
        mapper = new ObjectMapper();
    }

    @Override
    @Post("json")
    public Representation post(Representation entity) {
        StringRepresentation presentation = null;
        try {
            final Instance instance = mapper.readValue(ByteStreams.toByteArray(entity.getStream()), Instance.class);
            final PinotResourceManagerResponse resp = manager.addInstance(instance);
            LOGGER.info("instace create request recieved for instance : " + instance.toInstanceId());
            presentation = new StringRepresentation(resp.toJSON().toString());
        } catch (final Exception e) {
            presentation = new StringRepresentation(e.getMessage() + "\n" + ExceptionUtils.getStackTrace(e));
            LOGGER.error("Caught exception while processing post request", e);
            setStatus(Status.SERVER_ERROR_INTERNAL);
        }
        return presentation;
    }

    @Override
    @Get
    public Representation get() {
        StringRepresentation presentation = null;
        try {
            final String instanceName = (String) getRequest().getAttributes().get(INSTANCE_NAME);
            final String status = getReference().getQueryAsForm().getValues(STATUS);
            if (status == null) {
                presentation = new StringRepresentation("Not a valid GET call, do nothing!");
            } else {
                if (status.equals(ENABLE)) {
                    presentation = new StringRepresentation(
                            manager.enableInstance(instanceName).toJSON().toString());
                }
                if (status.equals(DISABLE)) {
                    presentation = new StringRepresentation(
                            manager.disableInstance(instanceName).toJSON().toString());
                }
            }

        } catch (final Exception e) {
            presentation = new StringRepresentation(e.getMessage() + "\n" + ExceptionUtils.getStackTrace(e));
            LOGGER.error("Caught exception while processing post request", e);
            setStatus(Status.SERVER_ERROR_INTERNAL);
        }
        return presentation;
    }

}