<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>TimeProvider.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">TheseFoolishThings :: Examples :: DCI :: Displayable</a> > <a href="../index.html" class="el_bundle">it-tidalwave-util</a> > <a href="index.source.html" class="el_package">it.tidalwave.util</a> > <span class="el_source">TimeProvider.java</span></div><h1>TimeProvider.java</h1><pre class="source lang-java linenums">/*
* *********************************************************************************************************************
*
* TheseFoolishThings: Miscellaneous utilities
* http://tidalwave.it/projects/thesefoolishthings
*
* Copyright (C) 2009 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
*
* *********************************************************************************************************************
*
* 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.
*
* *********************************************************************************************************************
*
* git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
* git clone https://github.com/tidalwave-it/thesefoolishthings-src
*
* *********************************************************************************************************************
*/
package it.tidalwave.util;
import javax.annotation.Nonnull;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Supplier;
/***********************************************************************************************************************
*
* A provider of current time. It should be used by code requiring a timestamp, so it can be mocked during tests.
* {@code MockTimeProvider} in module "Test Utilities" is a suitable mock for performing tests.
*
* @author Fabrizio Giudici
* @since 3.2-ALPHA-1 (was previously InstantProvider since 1.39)
*
**********************************************************************************************************************/
@FunctionalInterface
public interface TimeProvider extends Supplier<Instant>
{
// FIXME: should be private
should be private
<span class="fc" id="L50"> public static AtomicReference<TimeProvider> __INSTANCE = new AtomicReference<>();</span>
/*******************************************************************************************************************
*
* Returns the current time.
*
* @return the current time as an {@link Instant}
* @since 3.2-ALPHA-2
*
******************************************************************************************************************/
@Nonnull
public Instant currentInstant();
/*******************************************************************************************************************
*
* Returns the current time. This method is provided to implement {@link Supplier}{@code <Instant>}.
*
* @return the current time as an {@link Instant}
* @since 3.2-ALPHA-2
*
******************************************************************************************************************/
@Override @Nonnull
public default Instant get()
{
<span class="nc" id="L74"> return currentInstant();</span>
}
/*******************************************************************************************************************
*
* Returns the current time.
*
* @return the current time as a {@link ZonedDateTime} in the default zone.
* @since 3.2-ALPHA-2
*
******************************************************************************************************************/
@Nonnull
public default ZonedDateTime currentZonedDateTime()
{
<span class="fc" id="L88"> return ZonedDateTime.ofInstant(currentInstant(), ZoneId.systemDefault());</span>
}
/*******************************************************************************************************************
*
* Returns the current time.
*
* @return the current time as a {@link LocalDateTime} in the default zone.
* @since 3.2-ALPHA-2
*
******************************************************************************************************************/
@Nonnull
public default LocalDateTime currentLocalDateTime()
{
<span class="fc" id="L102"> return LocalDateTime.ofInstant(currentInstant(), ZoneId.systemDefault());</span>
}
/*******************************************************************************************************************
*
* Returns the default instance.
*
* @return the default instance
* @since 3.2-ALPHA-2
*
******************************************************************************************************************/
@Nonnull
public static TimeProvider getInstance()
{
<span class="fc" id="L116"> synchronized (TimeProvider.class)</span>
{
<span class="pc bpc" id="L118" title="1 of 2 branches missed."> if (__INSTANCE.get() == null)</span>
{
<span class="fc" id="L120"> __INSTANCE.set(new DefaultTimeProvider());</span>
}
<span class="fc" id="L123"> return __INSTANCE.get();</span>
}
}
/*******************************************************************************************************************
*
******************************************************************************************************************/
<span class="fc" id="L130"> static class DefaultTimeProvider implements TimeProvider</span>
{
@Override @Nonnull
public Instant currentInstant()
{
<span class="fc" id="L135"> return Instant.now();</span>
}
}
}
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