/*************************************************************************
 * Copyright 2009-2014 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
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package com.eucalyptus.objectstorage.providers;

import java.util.Date;

import org.apache.commons.pool.PoolableObjectFactory;

import com.amazonaws.auth.AWSCredentials;
import com.eucalyptus.objectstorage.client.OsgInternalS3Client;
import com.eucalyptus.objectstorage.entities.S3ProviderConfiguration;
import com.eucalyptus.storage.config.ConfigurationCache;

/**
 * see @org.apache.commons.pool.PoolableObjectFactory<T>
 */
public class PoolableProviderClientFactory implements PoolableObjectFactory<OsgInternalS3Client> {

  private AWSCredentials requestUser;
  private String upstreamEndpoint;
  private boolean usePathStyle;

  private long checkIntervalInMs = 15l; // use constant for now, if we start using this again should make a config value

  public PoolableProviderClientFactory(AWSCredentials requestUser, String upstreamEndpoint, boolean usePathStyle) {
    this.requestUser = requestUser;
    this.upstreamEndpoint = upstreamEndpoint;
    this.usePathStyle = usePathStyle;
  }

  @Override
  public OsgInternalS3Client makeObject() throws Exception {
    boolean useHttps = false;
    S3ProviderConfiguration providerConfig = ConfigurationCache.getConfiguration(S3ProviderConfiguration.class);
    if (providerConfig != null && providerConfig.getS3UseHttps() != null && providerConfig.getS3UseHttps()) {
      useHttps = true;
    }

    OsgInternalS3Client osgInternalS3Client = new OsgInternalS3Client(requestUser, upstreamEndpoint, useHttps, providerConfig.getS3UseBackendDns());
    osgInternalS3Client.setUsePathStyle(usePathStyle);
    return osgInternalS3Client;
  }

  @Override
  public void destroyObject(OsgInternalS3Client amazonS3Client) throws Exception {
    amazonS3Client.getS3Client().shutdown();
  }

  @Override
  public boolean validateObject(OsgInternalS3Client amazonS3Client) {
    long now = new Date().getTime();
    long instantiated = amazonS3Client.getInstantiated().getTime();
    if (now - instantiated > checkIntervalInMs) {
      if (ConfigurationCache.getConfiguration(S3ProviderConfiguration.class).getLastUpdateTimestamp().getTime() - instantiated > 0) {
        return false;
      }
    }
    return true;
  }

  @Override
  public void activateObject(OsgInternalS3Client amazonS3Client) throws Exception {
    // no-op
  }

  @Override
  public void passivateObject(OsgInternalS3Client amazonS3Client) throws Exception {
    // no-op
  }
}