1 files changed, 106 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-python-runtime/src/main/java/org/apache/tuscany/sca/implementation/python/provider/PythonImplementationProvider.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-python-runtime/src/main/java/org/apache/tuscany/sca/implementation/python/provider/PythonImplementationProvider.java
new file mode 100644
index 0000000000..7d381ac9d9
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-python-runtime/src/main/java/org/apache/tuscany/sca/implementation/python/provider/PythonImplementationProvider.java
@@ -0,0 +1,106 @@
+/*
+ * 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.tuscany.sca.implementation.python.provider;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.implementation.python.PythonEval;
+import org.apache.tuscany.sca.implementation.python.PythonImplementation;
+import org.apache.tuscany.sca.implementation.python.PythonProperty;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
+import org.python.core.Py;
+import org.python.core.PyObject;
+import org.python.core.PyString;
+import org.python.core.PySystemState;
+import org.python.core.PyTuple;
+import org.python.util.PythonInterpreter;
+
+/**
+ * Implementation provider for Python component implementations.
+ * 
+ * @version $Rev$ $Date$
+ */
+class PythonImplementationProvider implements ImplementationProvider {
+    final RuntimeComponent component;
+    final PythonImplementation implementation;
+    PythonInterpreter python;
+    PyObject callable;
+    ProxyFactory pxFactory;
+
+    PythonImplementationProvider(final RuntimeComponent comp, final PythonImplementation impl, ProxyFactory pxf) {
+        component = comp;
+        implementation = impl;
+        pxFactory = pxf;
+    }
+
+    public void start() {
+        final PySystemState pss = new PySystemState();
+        pss.path.insert(0, new PyString(implementation.getLocation()));
+        pss.path.insert(0, new PyString(getClass().getProtectionDomain().getCodeSource().getLocation().getFile()));
+        python = new PythonInterpreter(null, pss);
+        python.exec("from invoker import *");
+
+        final List<PyObject> px = new ArrayList<PyObject>();
+        for(final ComponentReference r: component.getReferences()) {
+            final PythonEval pe = pxFactory.createProxy(PythonEval.class, (RuntimeEndpointReference)r.getEndpointReferences().get(0));
+            px.add(Py.java2py(new PythonEval() {
+                @Override
+                public String eval(final String args) throws Exception {
+                    final String v = pe.eval(args);
+                    return v;
+                }
+            }));
+        }
+        final List<PyObject> pr = new ArrayList<PyObject>();
+        for(final ComponentProperty p: component.getProperties()) {
+            final String v = String.valueOf(p.getValue());
+            pr.add(Py.java2py(new PythonProperty() {
+                @Override
+                public String eval() {
+                    return v;
+                }
+            }));
+        }
+
+        PyObject mkc = python.get("mkcomponent");
+        callable = mkc.__call__(new PyString(component.getName()), new PyString(implementation.getScript()), new PyTuple(px.toArray(new PyObject[0])), new PyTuple(pr.toArray(new PyObject[0])));
+    }
+
+    public void stop() {
+        python.cleanup();
+    }
+
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+
+    public Invoker createInvoker(final RuntimeComponentService s, final Operation op) {
+        return new PythonInvoker(python, callable, op);
+    }
+}