org.trustedanalytics.h2oscoringengine.publisher.steps.CheckingIfAppExistsStep.java Source code

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Here is the source code for org.trustedanalytics.h2oscoringengine.publisher.steps.CheckingIfAppExistsStep.java

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/**
 * Copyright (c) 2015 Intel Corporation
 *
 * 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 org.trustedanalytics.h2oscoringengine.publisher.steps;

import static org.trustedanalytics.h2oscoringengine.publisher.http.CloudFoundryEndpoints.APP_IN_SPACE_ENDPOINT_TEMPLATE;
import static org.trustedanalytics.h2oscoringengine.publisher.http.CloudFoundryResponsesJsonPaths.APPS_NUMBER_JSON_PATH;

import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;
import org.trustedanalytics.h2oscoringengine.publisher.EnginePublicationException;
import org.trustedanalytics.h2oscoringengine.publisher.http.HttpCommunication;
import org.trustedanalytics.h2oscoringengine.publisher.http.JsonDataFetcher;

public class CheckingIfAppExistsStep {

    private static final Logger LOGGER = LoggerFactory.getLogger(CheckingIfAppExistsStep.class);

    private final RestTemplate cfRestTemplate;
    private final String cfAppInSpaceUrl;

    public CheckingIfAppExistsStep(String cfApiUrl, RestTemplate cfRestTemplate) {
        this.cfRestTemplate = cfRestTemplate;
        this.cfAppInSpaceUrl = cfApiUrl + APP_IN_SPACE_ENDPOINT_TEMPLATE;
    }

    public boolean check(String appName, String spaceGuid) throws EnginePublicationException {

        LOGGER.info("Checking if app " + appName + " already exists in CloudFoundry");
        ResponseEntity<String> response = cfRestTemplate.exchange(cfAppInSpaceUrl, HttpMethod.GET,
                HttpCommunication.simpleJsonRequest(), String.class, spaceGuid, appName);

        Integer appsNumber;
        try {
            appsNumber = JsonDataFetcher.getIntValue(response.getBody(), APPS_NUMBER_JSON_PATH);
            LOGGER.debug("Number of found apps: " + appsNumber);
            return appsNumber != 0;
        } catch (IOException e) {
            throw new EnginePublicationException("Unable to check if CloudFoundry app already exists: ", e);
        }
    }
}