com.netflix.conductor.sdk.healthcheck.HealthCheckClient Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of java-sdk Show documentation
OSS & Orkes Conductor SDK
The newest version!
/*
 * Copyright 2021 Conductor Authors.
 * 
 * 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.netflix.conductor.sdk.healthcheck;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;

public class HealthCheckClient {

    private final String healthCheckURL;

    private final ObjectMapper objectMapper;

    public HealthCheckClient(String healthCheckURL) {
        this.healthCheckURL = healthCheckURL;
        this.objectMapper =
                new ObjectMapper()
                        .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    }

    public boolean isServerRunning() {
        try {

            BufferedReader in =
                    new BufferedReader(new InputStreamReader(new URL(healthCheckURL).openStream()));
            StringBuilder response = new StringBuilder();
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
            HealthCheckResults healthCheckResults =
                    objectMapper.readValue(response.toString(), HealthCheckResults.class);
            return healthCheckResults.healthy;
        } catch (Throwable t) {
            return false;
        }
    }

    private static final class HealthCheckResults {

        private boolean healthy;

        public boolean isHealthy() {
            return healthy;
        }

        public void setHealthy(boolean healthy) {
            this.healthy = healthy;
        }
    }
}