feat: Added type conversion math component

Signed-off-by: MMaiero <[email protected]>

kura/examples/org.eclipse.kura.example.wire.math.singleport.provider/OSGI-INF/TypeConversionComponent.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    
+    Copyright (c) 2024 Eurotech and/or its affiliates and others
+  
+    This program and the accompanying materials are made
+    available under the terms of the Eclipse Public License 2.0
+    which is available at https://www.eclipse.org/legal/epl-2.0/
+    
+    SPDX-License-Identifier: EPL-2.0
+    
+    Contributors:
+     Eurotech
+     
+-->
+<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0"
+               name="org.eclipse.kura.wire.TypeConversion"
+               activate="activate"
+               deactivate="deactivate"
+               modified="updated"
+               enabled="true"
+               immediate="true"
+               configuration-policy="require">
+   <implementation class="org.eclipse.kura.example.wire.math.singleport.typeconversion.TypeConversionComponent"/>
+   <service>
+      <provide interface="org.eclipse.kura.configuration.ConfigurableComponent"/>
+      <provide interface="org.eclipse.kura.wire.WireComponent"/>
+      <provide interface="org.osgi.service.wireadmin.Consumer"/>
+      <provide interface="org.eclipse.kura.wire.WireEmitter"/>
+      <provide interface="org.eclipse.kura.wire.WireReceiver"/>
+      <provide interface="org.osgi.service.wireadmin.Producer"/>
+   </service>
+   <reference bind="bindWireHelperService"
+   	          cardinality="1..1"
+   	          interface="org.eclipse.kura.wire.WireHelperService"
+   	          name="WireHelperService"
+   	          policy="static"
+   	          unbind="unbindWireHelperService"/>
+   <property name="service.pid" value="org.eclipse.kura.wire.TypeConversion"/>
+   <property name="kura.ui.service.hide" type="Boolean" value="true"/>
+   <property name="input.cardinality.minimum" type="Integer" value="1"/>
+   <property name="input.cardinality.maximum" type="Integer" value="1"/>
+   <property name="input.cardinality.default" type="Integer" value="1"/>
+   <property name="output.cardinality.minimum" type="Integer" value="1"/>
+   <property name="output.cardinality.maximum" type="Integer" value="1"/>
+   <property name="output.cardinality.default" type="Integer" value="1"/>
+</scr:component>

kura/examples/org.eclipse.kura.example.wire.math.singleport.provider/OSGI-INF/metatype/org.eclipse.kura.wire.TypeConversion.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    
+    Copyright (c) 2024 Eurotech and/or its affiliates and others
+  
+    This program and the accompanying materials are made
+    available under the terms of the Eclipse Public License 2.0
+    which is available at https://www.eclipse.org/legal/epl-2.0/
+    
+    SPDX-License-Identifier: EPL-2.0
+    
+    Contributors:
+     Eurotech
+     
+-->
+<MetaData xmlns="http://www.osgi.org/xmlns/metatype/v1.2.0" localization="en_us">
+    <OCD id="org.eclipse.kura.wire.TypeConversion" 
+         name="GainOffset" 
+         description="A wire component that applies a type conversion to a configurable set of numerical input properties.">
+
+        <AD id="channels"
+            name="Channels and Conversion"
+            type="String" cardinality="0"
+            required="true"
+            default="channel1|Long"
+            description="Specifies the properties on which apply the type conversion. Separated by a new line|textarea">
+        </AD>
+
+        <AD id="emit.received.properties"
+            name="emit.received.properties"
+            type="Boolean" cardinality="0"
+            required="true"
+            default="false"
+            description="Specifies whether received properties should be included in the emitted envelope or not.">
+        </AD>
+    </OCD>
+
+    <Designate pid="org.eclipse.kura.wire.TypeConversion" factoryPid="org.eclipse.kura.wire.TypeConversion">
+        <Object ocdref="org.eclipse.kura.wire.TypeConversion"/>
+    </Designate>
+</MetaData>

kura/examples/org.eclipse.kura.example.wire.math.singleport.provider/src/main/java/org/eclipse/kura/example/wire/math/singleport/typeconversion/TypeConversionComponent.java

@@ -0,0 +1,141 @@
+/*******************************************************************************
+ * Copyright (c) 2024 Eurotech and/or its affiliates and others
+ * 
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ * 
+ * Contributors:
+ *  Eurotech
+ *******************************************************************************/
+
+package org.eclipse.kura.example.wire.math.singleport.typeconversion;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.kura.configuration.ConfigurableComponent;
+import org.eclipse.kura.type.DataType;
+import org.eclipse.kura.type.TypedValue;
+import org.eclipse.kura.type.TypedValues;
+import org.eclipse.kura.wire.WireComponent;
+import org.eclipse.kura.wire.WireEmitter;
+import org.eclipse.kura.wire.WireEnvelope;
+import org.eclipse.kura.wire.WireHelperService;
+import org.eclipse.kura.wire.WireReceiver;
+import org.eclipse.kura.wire.WireRecord;
+import org.eclipse.kura.wire.WireSupport;
+import org.osgi.framework.ServiceReference;
+import org.osgi.service.component.ComponentContext;
+import org.osgi.service.wireadmin.Wire;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TypeConversionComponent implements WireEmitter, WireReceiver, ConfigurableComponent {
+
+    private static final Logger logger = LoggerFactory.getLogger(TypeConversionComponent.class);
+
+    private WireHelperService wireHelperService;
+    private WireSupport wireSupport;
+
+    private TypeConversionComponentOptions options;
+
+    public void bindWireHelperService(final WireHelperService wireHelperService) {
+        this.wireHelperService = wireHelperService;
+    }
+
+    public void unbindWireHelperService(final WireHelperService wireHelperService) {
+        if (this.wireHelperService == wireHelperService) {
+            this.wireHelperService = null;
+        }
+    }
+
+    public void activate(final Map<String, Object> properties, ComponentContext componentContext) {
+        this.wireSupport = this.wireHelperService.newWireSupport(this,
+                (ServiceReference<WireComponent>) componentContext.getServiceReference());
+        updated(properties);
+    }
+
+    public void updated(final Map<String, Object> properties) {
+        try {
+            this.options = new TypeConversionComponentOptions(properties);
+        } catch (Exception e) {
+            logger.warn("Invalid configuration, please review", e);
+            this.options = null;
+        }
+    }
+
+    public void deactivate() {
+    }
+
+    @Override
+    public Object polled(Wire wire) {
+        return wireSupport.polled(wire);
+    }
+
+    @Override
+    public void consumersConnected(Wire[] wires) {
+        wireSupport.consumersConnected(wires);
+    }
+
+    @Override
+    public void updated(Wire wire, Object value) {
+        wireSupport.updated(wire, value);
+    }
+
+    @Override
+    public void producersConnected(Wire[] wires) {
+        wireSupport.producersConnected(wires);
+    }
+
+    @Override
+    public void onWireReceive(WireEnvelope wireEnvelope) {
+        if (options == null) {
+            logger.warn("Invalid configuration, please review");
+        }
+        final List<WireRecord> inputRecords = wireEnvelope.getRecords();
+        final List<WireRecord> records = new ArrayList<>(inputRecords.size());
+        for (final WireRecord record : inputRecords) {
+            records.add(processRecord(record));
+        }
+        this.wireSupport.emit(records);
+    }
+
+    private WireRecord processRecord(WireRecord record) {
+        final Map<String, TypedValue<?>> inputProperties = record.getProperties();
+        final Map<String, TypedValue<?>> outProperties = new HashMap<>();
+        if (this.options.shouldEmitReceivedProperties()) {
+            outProperties.putAll(inputProperties);
+        }
+        for (TypeConversionEntry e : this.options.getEntries()) {
+            final String propertyName = e.getPropertyName();
+            final TypedValue<?> typedValue = inputProperties.get(propertyName);
+            if (typedValue == null) {
+                continue;
+            }
+            final Object value = typedValue.getValue();
+            if (!(value instanceof Number)) {
+                logger.warn("Invalid property value: {}={}", propertyName, typedValue);
+                continue;
+            }
+            if (e.getType().equals(DataType.DOUBLE)) {
+                outProperties.put(propertyName,
+                        TypedValues.newDoubleValue(((Number) value).doubleValue()));
+            } else if (e.getType().equals(DataType.FLOAT)) {
+                outProperties.put(propertyName,
+                        TypedValues.newFloatValue(((Number) value).floatValue()));
+            } else if (e.getType().equals(DataType.INTEGER)) {
+                outProperties.put(propertyName,
+                        TypedValues.newFloatValue(((Number) value).intValue()));
+            } else if (e.getType().equals(DataType.LONG)) {
+                outProperties.put(propertyName,
+                        TypedValues.newFloatValue(((Number) value).longValue()));
+            }
+        }
+        return new WireRecord(outProperties);
+    }
+}

kura/examples/org.eclipse.kura.example.wire.math.singleport.provider/src/main/java/org/eclipse/kura/example/wire/math/singleport/typeconversion/TypeConversionComponentOptions.java

@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2024 Eurotech and/or its affiliates and others
+ * 
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ * 
+ * Contributors:
+ *  Eurotech
+ *******************************************************************************/
+
+package org.eclipse.kura.example.wire.math.singleport.typeconversion;
+
+import java.util.List;
+import java.util.Map;
+
+public class TypeConversionComponentOptions {
+
+    private static final String CONFIGURATION_PROP_NAME = "channels";
+    private static final String EMIT_RECEIVED_PROPERTIES_PROP_NAME = "emit.received.properties";
+
+    private static final boolean EMIT_RECEIVED_PROPERTIES_DEFAULT = false;
+    private static final String CONFIGURATION_DEFAULT = "";
+
+    private List<TypeConversionEntry> entries;
+    private boolean emitReceivedProperties;
+
+    public TypeConversionComponentOptions(final Map<String, Object> properties) {
+        this.emitReceivedProperties = getSafe(properties.get(EMIT_RECEIVED_PROPERTIES_PROP_NAME),
+                EMIT_RECEIVED_PROPERTIES_DEFAULT);
+        this.entries = TypeConversionEntry
+                .parseAll(getSafe(properties.get(CONFIGURATION_PROP_NAME), CONFIGURATION_DEFAULT));
+    }
+
+    public List<TypeConversionEntry> getEntries() {
+        return entries;
+    }
+
+    public boolean shouldEmitReceivedProperties() {
+        return emitReceivedProperties;
+    }
+
+    @SuppressWarnings("unchecked")
+    private <T> T getSafe(Object o, T defaultValue) {
+        if (defaultValue.getClass().isInstance(o)) {
+            return (T) o;
+        }
+        return defaultValue;
+    }
+}

kura/examples/org.eclipse.kura.example.wire.math.singleport.provider/src/main/java/org/eclipse/kura/example/wire/math/singleport/typeconversion/TypeConversionEntry.java

@@ -0,0 +1,85 @@
+/*******************************************************************************
+ * Copyright (c) 2024 Eurotech and/or its affiliates and others
+ * 
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ * 
+ * Contributors:
+ *  Eurotech
+ *******************************************************************************/
+
+package org.eclipse.kura.example.wire.math.singleport.typeconversion;
+
+import static java.util.Objects.requireNonNull;
+
+import java.util.List;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+import org.eclipse.kura.type.DataType;
+
+public class TypeConversionEntry {
+
+    private static final Pattern ENTRY_DELIMITER = Pattern.compile("[;\n]");
+    private static final Pattern FIELD_DELIMITER = Pattern.compile("[|]");
+
+    private final String propertyName;
+    private final DataType type;
+
+    public TypeConversionEntry(final String propertyName, final DataType type) {
+        this.propertyName = propertyName;
+        this.type = type;
+    }
+
+    public String getPropertyName() {
+        return propertyName;
+    }
+
+    public DataType getType() {
+        return type;
+    }
+
+    private static void clear(String[] entryArray) {
+        entryArray[0] = null;
+        entryArray[1] = null;
+    }
+
+    private static TypeConversionEntry parse(final String entryString, final String[] tempArray) {
+        try {
+            clear(tempArray);
+
+            FIELD_DELIMITER.splitAsStream(entryString).map(String::trim).filter(s -> !s.isEmpty())
+                    .toArray(i -> tempArray);
+
+            requireNonNull(tempArray[0]);
+            requireNonNull(tempArray[1]);
+            String typeTemp = tempArray[1];
+            DataType dataType;
+
+            if ("double".equalsIgnoreCase(typeTemp)) {
+                dataType = DataType.DOUBLE;
+            } else if ("float".equalsIgnoreCase(typeTemp)) {
+                dataType = DataType.FLOAT;
+            } else if ("integer".equalsIgnoreCase(typeTemp)) {
+                dataType = DataType.INTEGER;
+            } else if ("long".equalsIgnoreCase(typeTemp)) {
+                dataType = DataType.LONG;
+            } else {
+                throw new IllegalArgumentException("Unsupported type");
+            }
+
+            return new TypeConversionEntry(tempArray[0], dataType);
+        } catch (Exception e) {
+            throw new IllegalArgumentException("Invalid entry: " + entryString);
+        }
+    }
+
+    public static List<TypeConversionEntry> parseAll(String configuration) {
+        final String[] tempArray = new String[3];
+        return ENTRY_DELIMITER.splitAsStream(configuration).map(String::trim).filter(s -> !s.isEmpty())
+                .map(entryString -> parse(entryString, tempArray)).collect(Collectors.toList());
+    }
+}