From 0702941176cc544ca8382460164c16fbff31c077 Mon Sep 17 00:00:00 2001
From: Christian Wulf <chw@informatik.uni-kiel.de>
Date: Wed, 2 Jul 2014 18:39:50 +0200
Subject: [PATCH] added generic distributor
---
.../basic/distributor/CloneStrategy.java | 34 ++++++++
.../distributor/CopyByReferenceStrategy.java | 38 ++++++++
.../stage/basic/distributor/Distributor.java | 86 +++++++++++++++++++
.../distributor/IDistributorStrategy.java | 31 +++++++
.../basic/distributor/RoundRobinStrategy.java | 47 ++++++++++
5 files changed, 236 insertions(+)
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CloneStrategy.java
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CopyByReferenceStrategy.java
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/Distributor.java
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/IDistributorStrategy.java
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/RoundRobinStrategy.java
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CloneStrategy.java b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CloneStrategy.java
new file mode 100644
index 00000000..523b150e
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CloneStrategy.java
@@ -0,0 +1,34 @@
+/***************************************************************************
+ * Copyright 2014 Kieker Project (http://kieker-monitoring.net)
+ *
+ * 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.
+ ***************************************************************************/
+package teetime.variant.methodcallWithPorts.stage.basic.distributor;
+
+import java.util.List;
+
+import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
+
+/**
+ * @author Nils Christian Ehmke
+ *
+ * @since 1.10
+ */
+public final class CloneStrategy<T> implements IDistributorStrategy<T> {
+
+ @Override
+ public boolean distribute(final List<OutputPort<T>> outputPorts, final T element) {
+ throw new UnsupportedOperationException();
+ }
+
+}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CopyByReferenceStrategy.java b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CopyByReferenceStrategy.java
new file mode 100644
index 00000000..0fa5efc0
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/CopyByReferenceStrategy.java
@@ -0,0 +1,38 @@
+/***************************************************************************
+ * Copyright 2014 Kieker Project (http://kieker-monitoring.net)
+ *
+ * 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.
+ ***************************************************************************/
+package teetime.variant.methodcallWithPorts.stage.basic.distributor;
+
+import java.util.List;
+
+import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
+
+/**
+ * @author Nils Christian Ehmke
+ *
+ * @since 1.10
+ */
+public final class CopyByReferenceStrategy<T> implements IDistributorStrategy<T> {
+
+ @Override
+ public boolean distribute(final List<OutputPort<T>> outputPorts, final T element) {
+ for (final OutputPort<T> port : outputPorts) {
+ port.send(element);
+ }
+
+ return true;
+ }
+
+}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/Distributor.java b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/Distributor.java
new file mode 100644
index 00000000..8fc677ae
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/Distributor.java
@@ -0,0 +1,86 @@
+/***************************************************************************
+ * Copyright 2014 Kieker Project (http://kieker-monitoring.net)
+ *
+ * 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.
+ ***************************************************************************/
+
+package teetime.variant.methodcallWithPorts.stage.basic.distributor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import teetime.variant.methodcallWithPorts.framework.core.AbstractStage;
+import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
+
+/**
+ * @author Christian Wulf
+ *
+ * @since 1.10
+ *
+ * @param T
+ * the type of the input port and the output ports
+ */
+public class Distributor<T> extends AbstractStage<T, T> {
+
+ // TODO do not inherit from AbstractStage since it provides the default output port that is unnecessary for the distributor ConsumerStage<T, T> {
+
+ // BETTER use an array since a list always creates a new iterator when looping
+ private final List<OutputPort<T>> outputPortList = new ArrayList<OutputPort<T>>();
+
+ private IDistributorStrategy<T> strategy = new RoundRobinStrategy<T>();
+
+ public IDistributorStrategy<T> getStrategy() {
+ return this.strategy;
+ }
+
+ public void setStrategy(final IDistributorStrategy<T> strategy) {
+ this.strategy = strategy;
+ }
+
+ @Override
+ protected void execute5(final T element) {
+ this.strategy.distribute(this.outputPortList, element);
+ }
+
+ @Override
+ public void onIsPipelineHead() {
+ for (OutputPort<T> op : this.outputPortList) {
+ op.getPipe().close();
+ System.out.println("End signal sent, size: " + op.getPipe().size());
+ }
+ }
+
+ @Override
+ public OutputPort<T> getOutputPort() {
+ return this.getNewOutputPort();
+ }
+
+ public OutputPort<T> getNewOutputPort() {
+ final OutputPort<T> newOutputPort = new OutputPort<T>();
+ this.outputPortList.add(newOutputPort);
+ return newOutputPort;
+ }
+
+ public List<OutputPort<T>> getOutputPortList() {
+ return this.outputPortList;
+ }
+
+ @Override
+ public void executeWithPorts() {
+ T element = this.getInputPort().receive();
+
+ this.setReschedulable(this.getInputPort().getPipe().size() > 0);
+
+ this.execute5(element);
+ }
+}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/IDistributorStrategy.java b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/IDistributorStrategy.java
new file mode 100644
index 00000000..3906263d
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/IDistributorStrategy.java
@@ -0,0 +1,31 @@
+/***************************************************************************
+ * Copyright 2014 Kieker Project (http://kieker-monitoring.net)
+ *
+ * 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.
+ ***************************************************************************/
+package teetime.variant.methodcallWithPorts.stage.basic.distributor;
+
+import java.util.List;
+
+import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
+
+/**
+ * @author Nils Christian Ehmke
+ *
+ * @since 1.10
+ */
+public interface IDistributorStrategy<T> {
+
+ public boolean distribute(final List<OutputPort<T>> allOutputPorts, final T element);
+
+}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/RoundRobinStrategy.java b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/RoundRobinStrategy.java
new file mode 100644
index 00000000..13b27fa3
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/stage/basic/distributor/RoundRobinStrategy.java
@@ -0,0 +1,47 @@
+/***************************************************************************
+ * Copyright 2014 Kieker Project (http://kieker-monitoring.net)
+ *
+ * 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.
+ ***************************************************************************/
+package teetime.variant.methodcallWithPorts.stage.basic.distributor;
+
+import java.util.List;
+
+import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
+
+/**
+ * @author Nils Christian Ehmke
+ *
+ * @since 1.10
+ */
+public final class RoundRobinStrategy<T> implements IDistributorStrategy<T> {
+
+ private int index = 0;
+
+ @Override
+ public boolean distribute(final List<OutputPort<T>> outputPorts, final T element) {
+ final OutputPort<T> outputPort = this.getNextPortInRoundRobinOrder(outputPorts);
+ outputPort.send(element);
+
+ return true;
+ }
+
+ private OutputPort<T> getNextPortInRoundRobinOrder(final List<OutputPort<T>> outputPorts) {
+ final OutputPort<T> outputPort = outputPorts.get(this.index);
+
+ this.index = (this.index + 1) % outputPorts.size();
+
+ return outputPort;
+ }
+
+}
--
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