de.codecentric.boot.admin.notify.PagerdutyNotifier.java Source code

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Here is the source code for de.codecentric.boot.admin.notify.PagerdutyNotifier.java

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/*
 * Copyright 2013-2014 the original author or 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 de.codecentric.boot.admin.notify;

import java.net.URI;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

import org.springframework.expression.Expression;
import org.springframework.expression.ParserContext;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.web.client.RestTemplate;

import de.codecentric.boot.admin.event.ClientApplicationStatusChangedEvent;

/**
 * Notifier submitting events to Pagerduty.
 *
 * @author Johannes Edmeier
 */
public class PagerdutyNotifier extends AbstractStatusChangeNotifier {
    public static final URI DEFAULT_URI = URI
            .create("https://events.pagerduty.com/generic/2010-04-15/create_event.json");

    private final static String DEFAULT_DESCRIPTION = "#{application.name}/#{application.id} is #{to.status}";

    private final SpelExpressionParser parser = new SpelExpressionParser();
    private RestTemplate restTemplate = new RestTemplate();

    /**
     * URI for pagerduty-REST-API
     */
    private URI url = DEFAULT_URI;

    /**
     * Service-Key for pagerduty-REST-API
     */
    private String serviceKey;

    /**
     * Client for pagerduty-REST-API
     */
    private String client;

    /**
     * Client-url for pagerduty-REST-API
     */
    private URI clientUrl;

    /**
     * Trigger description. SpEL template using event as root;
     */
    private Expression description;

    public PagerdutyNotifier() {
        this.description = parser.parseExpression(DEFAULT_DESCRIPTION, ParserContext.TEMPLATE_EXPRESSION);
    }

    @Override
    protected void doNotify(ClientApplicationStatusChangedEvent event) throws Exception {
        restTemplate.postForEntity(url, createPagerdutyEvent(event), Void.class);
    }

    private Map<String, Object> createPagerdutyEvent(ClientApplicationStatusChangedEvent event) {
        Map<String, Object> result = new HashMap<String, Object>();
        result.put("service_key", serviceKey);
        result.put("incident_key", event.getApplication().getName() + "/" + event.getApplication().getId());
        result.put("description", description.getValue(event, String.class));

        Map<String, Object> details = new HashMap<String, Object>();
        details.put("from", event.getFrom());
        details.put("to", event.getTo());
        result.put("details", details);

        if ("UP".equals(event.getTo().getStatus())) {
            result.put("event_type", "resolve");

        } else {
            result.put("event_type", "trigger");
            if (client != null) {
                result.put("client", client);
            }
            if (clientUrl != null) {
                result.put("client_url", clientUrl);
            }

            Map<String, Object> context = new HashMap<String, Object>();
            context.put("type", "link");
            context.put("href", event.getApplication().getHealthUrl());
            context.put("text", "Application health-endpoint");
            result.put("contexts", Arrays.asList(context));
        }

        return result;
    }

    public void setUrl(URI url) {
        this.url = url;
    }

    public void setClient(String client) {
        this.client = client;
    }

    public void setClientUrl(URI clientUrl) {
        this.clientUrl = clientUrl;
    }

    public void setServiceKey(String serviceKey) {
        this.serviceKey = serviceKey;
    }

    public void setDescription(String description) {
        this.description = parser.parseExpression(description, ParserContext.TEMPLATE_EXPRESSION);
    }

    public void setRestTemplate(RestTemplate restTemplate) {
        this.restTemplate = restTemplate;
    }
}