com.appdynamics.extensions.rackspace.stats.DatabaseStats.java Source code

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Here is the source code for com.appdynamics.extensions.rackspace.stats.DatabaseStats.java

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/**
 * Copyright 2014 AppDynamics, Inc.
 *
 * 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.appdynamics.extensions.rackspace.stats;

import java.util.HashMap;
import java.util.Map;

import com.appdynamics.extensions.http.SimpleHttpClient;
import com.appdynamics.extensions.rackspace.exception.RackspaceMonitorException;
import com.fasterxml.jackson.databind.JsonNode;

public class DatabaseStats extends Stats {

    public static final String metricPath = "Databases |%s|%s|";

    private static final String instancesUri = "/instances";

    public DatabaseStats(SimpleHttpClient httpClient) {
        super(httpClient);
    }

    /**
     * Fetches metrics issuing a Http Request to the Databases url specific to
     * the DataCenter and returns as a Map<InstanceName, Map<MetricName,
     * MetricValue>>
     * 
     * @throws RackspaceMonitorException
     */
    @Override
    public Map<String, Map<String, Long>> getMetrics(String authToken, String url)
            throws RackspaceMonitorException {
        JsonNode serviceResponse = getServiceResponse(url + instancesUri, authToken);
        Map<String, Map<String, Long>> instanceStats = getMetricsFromNode(serviceResponse);
        return instanceStats;
    }

    private Map<String, Map<String, Long>> getMetricsFromNode(JsonNode serviceResponse) {
        Map<String, Map<String, Long>> instanceStats = new HashMap<String, Map<String, Long>>();
        JsonNode instancesNode = serviceResponse.get("instances");

        for (JsonNode instance : instancesNode) {
            Map<String, Long> stats = new HashMap<String, Long>();
            stats.put("Status", Long.valueOf(Status.valueOf(instance.path("status").asText()).statusInt));
            stats.put("Volume-size", instance.path("volume").path("size").asLong());

            instanceStats.put(instance.path("name").asText(), stats);
        }
        return instanceStats;
    }

}