camel-python language extension

docs/modules/ROOT/nav.adoc

@@ -247,6 +247,7 @@
 *** xref:reference/extensions/jackson-protobuf.adoc[Protobuf Jackson]
 *** xref:reference/extensions/pubnub.adoc[PubNub]
 *** xref:reference/extensions/pulsar.adoc[Pulsar]
+*** xref:reference/extensions/python.adoc[Python]
 *** xref:reference/extensions/qdrant.adoc[Qdrant]
 *** xref:reference/extensions/quartz.adoc[Quartz]
 *** xref:reference/extensions/quickfix.adoc[QuickFix]

docs/modules/ROOT/pages/reference/extensions/python.adoc

@@ -0,0 +1,46 @@
+// Do not edit directly!
+// This file was generated by camel-quarkus-maven-plugin:update-extension-doc-page
+[id="extensions-python"]
+= python
+:page-aliases: extensions/python.adoc
+:linkattrs:
+:cq-artifact-id: camel-quarkus-python
+:cq-native-supported: true
+:cq-status: Stable
+:cq-status-deprecation: Stable
+:cq-description: Evaluate a Python script
+:cq-deprecated: false
+:cq-jvm-since: 1.0.0
+:cq-native-since: 3.2.0
+
+ifeval::[{doc-show-badges} == true]
+[.badges]
+[.badge-key]##JVM since##[.badge-supported]##1.0.0## [.badge-key]##Native since##[.badge-supported]##3.2.0##
+endif::[]
+
+Evaluate a python script
+
+[id="extensions-python-whats-inside"]
+== What's inside
+
+* xref:{cq-camel-components}:languages:python-language.adoc[python language]
+
+Please refer to the above link for usage and configuration details.
+
+[id="extensions-python-maven-coordinates"]
+== Maven coordinates
+
+https://{link-quarkus-code-generator}/?extension-search=camel-quarkus-python[Create a new project with this extension on {link-quarkus-code-generator}, window="_blank"]
+
+Or add the coordinates to your existing project:
+
+[source,xml]
+----
+<dependency>
+    <groupId>org.apache.camel.quarkus</groupId>
+    <artifactId>camel-quarkus-python</artifactId>
+</dependency>
+----
+ifeval::[{doc-show-user-guide-link} == true]
+Check the xref:user-guide/index.adoc[User guide] for more information about writing Camel Quarkus applications.
+endif::[]

extensions/pom.xml

@@ -210,6 +210,7 @@
         <module>platform-http</module>
         <module>protobuf</module>
         <module>pubnub</module>
+        <module>python</module>
         <module>qdrant</module>
         <module>quartz</module>
         <module>qute</module>

extensions/python/deployment/pom.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You 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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.camel.quarkus</groupId>
+        <artifactId>camel-quarkus-python-parent</artifactId>
+        <version>3.14.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>camel-quarkus-python-deployment</artifactId>
+    <name>Camel Quarkus :: Python :: Deployment</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-core-deployment</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-python</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-support-language-deployment</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>io.quarkus</groupId>
+                            <artifactId>quarkus-extension-processor</artifactId>
+                            <version>${quarkus.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

extensions/python/deployment/src/main/java/org/apache/camel/quarkus/component/python/deployment/PythonCompiledExpressionBuildItem.java

@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.camel.quarkus.component.python.deployment;
+
+import io.quarkus.builder.item.MultiBuildItem;
+import org.python.core.PyCode;
+
+public final class PythonCompiledExpressionBuildItem extends MultiBuildItem {
+
+    private final String sourceCode;
+
+    private final PyCode compiledCode;
+
+    public PythonCompiledExpressionBuildItem(String sourceCode, PyCode compiledCode) {
+        this.sourceCode = sourceCode;
+        this.compiledCode = compiledCode;
+    }
+
+    public String getSourceCode() {
+        return sourceCode;
+    }
+
+    public PyCode getCompiledCode() {
+        return compiledCode;
+    }
+}

extensions/python/deployment/src/main/java/org/apache/camel/quarkus/component/python/deployment/PythonProcessor.java

@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.camel.quarkus.component.python.deployment;
+
+import java.util.List;
+
+import io.quarkus.deployment.annotations.BuildProducer;
+import io.quarkus.deployment.annotations.BuildStep;
+import io.quarkus.deployment.annotations.ExecutionTime;
+import io.quarkus.deployment.annotations.Record;
+import io.quarkus.deployment.builditem.FeatureBuildItem;
+import io.quarkus.deployment.pkg.steps.NativeOrNativeSourcesBuild;
+import io.quarkus.runtime.RuntimeValue;
+import org.apache.camel.ExpressionIllegalSyntaxException;
+import org.apache.camel.language.python.PythonLanguage;
+import org.apache.camel.quarkus.component.python.PythonExpressionRecorder;
+import org.apache.camel.quarkus.core.deployment.spi.CamelBeanBuildItem;
+import org.apache.camel.quarkus.support.language.deployment.ExpressionBuildItem;
+import org.apache.camel.quarkus.support.language.deployment.ExpressionExtractionResultBuildItem;
+import org.apache.camel.quarkus.support.language.deployment.ScriptBuildItem;
+import org.python.core.PyCode;
+import org.python.util.PythonInterpreter;
+
+class PythonProcessor {
+
+    private static final String FEATURE = "camel-python";
+
+    @BuildStep
+    FeatureBuildItem feature() {
+        return new FeatureBuildItem(FEATURE);
+    }
+
+    @BuildStep(onlyIf = NativeOrNativeSourcesBuild.class)
+    void compileExpressions(ExpressionExtractionResultBuildItem result,
+            List<ExpressionBuildItem> expressions,
+            List<ScriptBuildItem> scripts,
+            BuildProducer<PythonCompiledExpressionBuildItem> producer) {
+        if (result.isSuccess()) {
+            List<ExpressionBuildItem> pythonExpressions = expressions.stream()
+                    .filter(exp -> "python".equals(exp.getLanguage())).toList();
+            List<ScriptBuildItem> pythonScripts = scripts.stream()
+                    .filter(exp -> "python".equals(exp.getLanguage())).toList();
+            if (pythonExpressions.isEmpty() && pythonScripts.isEmpty()) {
+                return;
+            }
+
+            try (PythonInterpreter compiler = new PythonInterpreter()) {
+                for (ExpressionBuildItem pythonExpression : pythonExpressions) {
+                    producer.produce(createPythonExpressionBuildItem(compiler, pythonExpression.getExpression()));
+                }
+                for (ScriptBuildItem pythonScript : pythonScripts) {
+                    producer.produce(createPythonExpressionBuildItem(compiler, pythonScript.getLoadedContent()));
+                }
+            }
+        }
+    }
+
+    @Record(ExecutionTime.STATIC_INIT)
+    @BuildStep(onlyIf = NativeOrNativeSourcesBuild.class)
+    CamelBeanBuildItem configureLanguage(
+            PythonExpressionRecorder recorder,
+            ExpressionExtractionResultBuildItem result,
+            List<PythonCompiledExpressionBuildItem> sources) {
+
+        if (result.isSuccess() && !sources.isEmpty()) {
+            RuntimeValue<PythonLanguage.Builder> builder = recorder.languageBuilder();
+            for (PythonCompiledExpressionBuildItem source : sources) {
+                recorder.addScript(
+                        builder,
+                        source.getSourceCode(),
+                        source.getCompiledCode());
+            }
+            final RuntimeValue<PythonLanguage> language = recorder.languageNewInstance(builder);
+            return new CamelBeanBuildItem("python", PythonLanguage.class.getName(), language);
+        }
+        return null;
+    }
+
+    private PythonCompiledExpressionBuildItem createPythonExpressionBuildItem(PythonInterpreter compiler, String expression) {
+        PyCode compiledExpression;
+        try {
+            compiledExpression = compiler.compile(expression);
+        } catch (Exception e) {
+            throw new ExpressionIllegalSyntaxException(expression, e);
+        }
+        return new PythonCompiledExpressionBuildItem(expression, compiledExpression);
+    }
+}

extensions/python/pom.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You 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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.camel.quarkus</groupId>
+        <artifactId>camel-quarkus-extensions</artifactId>
+        <version>3.14.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>camel-quarkus-python-parent</artifactId>
+    <name>Camel Quarkus :: Python</name>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>deployment</module>
+        <module>runtime</module>
+    </modules>
+</project>