From 7c279747beb43c7e88633a6228a155a30e6834f7 Mon Sep 17 00:00:00 2001
From: Benjamin Culkin <scorpress@gmail.com>
Date: Mon, 27 May 2024 11:38:33 -0400
Subject: Initial import

---
 .../foundation/concurrent/ProcessingPipe.java      | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 israfil-foundation-concurrent/src/main/java/net/israfil/foundation/concurrent/ProcessingPipe.java

(limited to 'israfil-foundation-concurrent/src/main/java/net/israfil/foundation/concurrent/ProcessingPipe.java')

diff --git a/israfil-foundation-concurrent/src/main/java/net/israfil/foundation/concurrent/ProcessingPipe.java b/israfil-foundation-concurrent/src/main/java/net/israfil/foundation/concurrent/ProcessingPipe.java
new file mode 100644
index 0000000..2e23c2a
--- /dev/null
+++ b/israfil-foundation-concurrent/src/main/java/net/israfil/foundation/concurrent/ProcessingPipe.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2006, 2007 Israfil Consulting Services Corporation
+ * Copyright (c) 2006, 2007 Christian Edward Gruber
+ * All Rights Reserved
+ * 
+ * This software is licensed under the Berkeley Standard Distribution license,
+ * (BSD license), as defined below:
+ * 
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this 
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice, 
+ *    this list of conditions and the following disclaimer in the documentation 
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of Israfil Consulting Services nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software without 
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * OF SUCH DAMAGE.
+ * 
+ * $Id: Source.java 129 2006-12-31 23:20:02Z cgruber $
+ */
+package net.israfil.foundation.concurrent;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * An object that consumes an object and processes it, then produces the result
+ * upon request.  If the processor has no item in processing, it may consume 
+ * an item.  If the processor has an item it produces it when requested.  In 
+ * the converse cases the behaviour of the object depends on whether the 
+ * processor is in its on state or its off state. 
+ *
+ * @author <a href="mailto:cgruber@israfil.net">Christian Edward Gruber </a>
+ */
+public class ProcessingPipe<I,O> extends AbstractPipe<I,O> {
+
+	protected Processor<I,O> processor;
+	protected Integer timeout;
+	protected TimeUnit timeoutUnit;
+	
+	public ProcessingPipe() {}
+	
+	public Processor<I,O> getProcessor() { return processor; }
+	public void setProcessor(Processor<I,O> processor) {
+		this.processor = processor;
+	}
+	public Integer getTimeout() { return timeout; }
+	public void setTimeout(Integer timeout) { this.timeout = timeout; }
+	public TimeUnit getTimeoutUnit() { return timeoutUnit; }
+	public void setTimeoutUnit(TimeUnit timeoutUnit) {
+		this.timeoutUnit = timeoutUnit;
+	}
+
+	public void consume(I item, long timeout, TimeUnit unit) throws InterruptedException {
+		validateTimeout(timeout,unit);
+		try {
+			if (timeout > 0) getQueue().offer(item,timeout,unit);
+			else getQueue().put(item);
+		} catch (InterruptedException e) {
+			throw e;
+		}
+	}
+
+	public O produce(long timeout, TimeUnit unit) throws InterruptedException {
+		validateTimeout(timeout,unit);
+		O processedItem = null;
+		try {
+			if (timeout > 0) 
+				processedItem = this.processor.process(getQueue().poll(timeout,unit),getTimeout(),getTimeoutUnit());
+			else 
+				processedItem = this.processor.process(getQueue().poll(),getTimeout(),getTimeoutUnit());
+		} catch (InterruptedException e) {
+			throw e;
+		}
+		return processedItem;
+	}
+	
+}
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