content: /*
   * 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.github.jobson.utils;
  
  import com.codahale.metrics.health.HealthCheck;
  
  import java.io.File;
  
  import static java.lang.String.format;
  
  public final class DiskSpaceHealthCheck extends HealthCheck {
  
      private final File f;
      private final long minSpaceThreshold;
  
      public DiskSpaceHealthCheck(File f, long minSpaceThreshold) {
          this.f = f;
          this.minSpaceThreshold = minSpaceThreshold;
      }
  
      @Override
      protected Result check() throws Exception {
          final long usableSpace = f.getUsableSpace();
          if (usableSpace < minSpaceThreshold) {
              return Result.unhealthy(format(
                      "Out of disk space: only %s bytes remain in %s. The threshold for this warning is: %s",
                      usableSpace,
                      f.getAbsolutePath(),
                      minSpaceThreshold));
          } else {
              return Result.healthy(usableSpace + ": bytes remain at " + f.getAbsolutePath());
          }
      }
  }
  