1 files changed, 48 insertions, 0 deletions
diff --git a/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/ToscaParserFactory.java b/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/ToscaParserFactory.java
new file mode 100644
index 0000000..8bb1e17
--- /dev/null
+++ b/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/ToscaParserFactory.java
@@ -0,0 +1,48 @@
+package org.openecomp.sdc.toscaparser;
+
+import java.io.IOException;
+
+import org.openecomp.sdc.toscaparser.api.ToscaTemplateFactory;
+import org.openecomp.sdc.toscaparser.utils.JarExtractor;
+import org.python.util.PythonInterpreter;
+
+/**
+ * This is the entry point of the tosca-parser: a factory for creating {@code ToscaParser}s.
+ * <b>This class is not thread-safe.</b> Once you are done with all {@code ToscaParser}s 
+ * created by this factory, the {@code ToscaParserFactory} itself must be closed either by
+ * calling its close() method explicitly or preferrably by creating it in a try-with-resources block:
+ * <pre>
+    try (ToscaParserFactory toscaParserFactory = new ToscaParserFactory()){
+        ToscaParser parser = toscaParserFactory.create()
+        ToscaTemplate toscaTemplate = parser.parse(toscaFilePath);
+        ...
+    }
+ * </pre>
+ * @author Yaniv Nahoum
+ *
+ */
+public class ToscaParserFactory implements AutoCloseable {
+    
+    private JythonRuntime jythonRuntime;
+
+    public ToscaParser create() throws IOException {
+        initRuntime();
+        ToscaTemplateFactory toscaTemplateFactory = new ToscaTemplateFactory();
+        PythonInterpreter pythonInterpreter = new PythonInterpreter();
+        return new ToscaParser(toscaTemplateFactory, pythonInterpreter);
+    }
+    
+    private void initRuntime() throws IOException {
+        if (jythonRuntime == null) {
+            jythonRuntime = new JythonRuntime(new JarExtractor());
+            jythonRuntime.initialize();
+        }
+    }    
+    
+    @Override
+    public void close() throws IOException {
+        if (jythonRuntime != null) {
+            jythonRuntime.terminate();
+        }
+    }
+}