com.alipay.lookout.FileSystemSpaceMetricsImporter Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.alipay.lookout;

import com.alipay.lookout.api.Gauge;
import com.alipay.lookout.api.Id;
import com.alipay.lookout.api.Registry;
import com.alipay.lookout.api.composite.MixinMetric;
import com.alipay.lookout.common.LookoutConstants;
import com.alipay.lookout.spi.MetricsImporter;

import java.io.File;

/**
 * Created by [email protected] on 2017/2/26.
 */
public class FileSystemSpaceMetricsImporter implements MetricsImporter {

    @Override
    public void register(Registry registry) {

        Id basicId = registry.createId("instance.file.system");

        File[] roots = File.listRoots();
        // For each filesystem root;
        //TODO dynamic  File.listRoots() and for each;
        for (final File root : roots) {
            Id id = basicId.withTag("root", root.getAbsolutePath()).withTag(
                LookoutConstants.LOW_PRIORITY_TAG);
            MixinMetric mixin = registry.mixinMetric(id);
            mixin.gauge("total.space", new Gauge() {
                @Override
                public Long value() {
                    return root.getTotalSpace();
                }
            });

            mixin.gauge("free.space", new Gauge() {
                @Override
                public Long value() {
                    return root.getFreeSpace();
                }
            });
            mixin.gauge("usabe.space", new Gauge() {
                @Override
                public Long value() {
                    return root.getUsableSpace();
                }
            });
        }
    }
}