1 files changed, 129 insertions, 0 deletions
diff --git a/common/onap-tosca-datatype/src/main/java/org/onap/sdc/tosca/services/DataModelConvertUtil.java b/common/onap-tosca-datatype/src/main/java/org/onap/sdc/tosca/services/DataModelConvertUtil.java
new file mode 100644
index 0000000000..693e7d66df
--- /dev/null
+++ b/common/onap-tosca-datatype/src/main/java/org/onap/sdc/tosca/services/DataModelConvertUtil.java
@@ -0,0 +1,129 @@
+package org.onap.sdc.tosca.services;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+
+import org.apache.commons.collections4.CollectionUtils;
+import org.onap.sdc.tosca.datatypes.model.Import;
+import org.onap.sdc.tosca.error.ToscaRuntimeException;
+
+public class DataModelConvertUtil {
+
+    private static final String INVALID_TOSCA_IMPORT_SECTION = "Invalid TOSCA import section";
+
+    private DataModelConvertUtil() {
+        //Hiding implicit default constructor
+    }
+
+    public static List<Map<String, Import>> convertToscaImports(List importObj) {
+        ToscaExtensionYamlUtil toscaExtensionYamlUtil = new ToscaExtensionYamlUtil();
+        List<Map<String, Import>> convertedImport = new ArrayList<>();
+        if (CollectionUtils.isEmpty(importObj)) {
+            return null;
+        }
+        for (Object importEntry : importObj) {
+            convertToscaImportEntry(convertedImport, importEntry, toscaExtensionYamlUtil);
+        }
+        return convertedImport;
+    }
+
+    private static void convertToscaImportEntry(List<Map<String, Import>> convertedImport, Object importEntry,
+                                         ToscaExtensionYamlUtil toscaExtensionYamlUtil) {
+        if (importEntry instanceof String) {
+            //Support for import short notation
+            /*
+            imports:
+              - <file_URI_1>
+              - <file_URI_2>
+             */
+            convertImportShortNotation(convertedImport, importEntry.toString());
+        } else if (importEntry instanceof Map) {
+            handleImportMultiLineGrammar(convertedImport, importEntry, toscaExtensionYamlUtil);
+        }
+    }
+
+    private static void handleImportMultiLineGrammar(List<Map<String, Import>> convertedImport, Object importEntry,
+                                              ToscaExtensionYamlUtil toscaExtensionYamlUtil) {
+        try {
+            if (((Map) importEntry).containsKey("file")) {
+                //Support for import entry of the format - file: <file_uri> or - file: <import object>
+                Import importObject = toscaExtensionYamlUtil
+                        .yamlToObject(toscaExtensionYamlUtil.objectToYaml(importEntry), Import.class);
+                convertImportExtendedNotation(convertedImport, importObject);
+            } else {
+                convertImportMultiLineGrammar(convertedImport, (Map) importEntry, toscaExtensionYamlUtil);
+            }
+        } catch (Exception ex) {
+            throw new ToscaRuntimeException(INVALID_TOSCA_IMPORT_SECTION, ex);
+        }
+    }
+
+    private static void convertImportMultiLineGrammar(List<Map<String, Import>> convertedImport, Map importEntry,
+                                                      ToscaExtensionYamlUtil toscaExtensionYamlUtil) {
+        Set<Map.Entry<String, Object>> importEntries = importEntry.entrySet();
+        for (Map.Entry<String, Object> toscaImport : importEntries) {
+            String key = toscaImport.getKey();
+            Object importValue = toscaImport.getValue();
+            if (importValue instanceof Map) {
+                /* Support for import entry of the format multi line extended import notation
+                    - another_definition_file:
+                          file: path1/file.yaml
+                          repository: service_repo
+                          namespace_uri: http://test.xyz/uri
+                          namespace_prefix: pref
+                 */
+                Import importObject = toscaExtensionYamlUtil
+                        .yamlToObject(toscaExtensionYamlUtil.objectToYaml(importValue), Import.class);
+                Map<String, Import> convertedToscaImport = new HashMap<>();
+                convertedToscaImport.put(key, importObject);
+                convertedImport.add(convertedToscaImport);
+            } else {
+                //Support for import entry of the format - some_definition_file: path1/path2/fileName.yaml
+                convertedImport.add((Map<String, Import>) importEntry);
+            }
+        }
+    }
+
+    private static void convertImportExtendedNotation(List<Map<String, Import>> convertedImport, Import importEntry) {
+        Map<String, Import> importMap = new HashMap<>();
+        Optional<String> fileNameWithoutExtension =
+                getFileNameWithoutExtension(getFileName(importEntry.getFile()).replaceAll("/", "_"));
+        if (fileNameWithoutExtension.isPresent()) {
+            importMap.put(fileNameWithoutExtension.get(), importEntry);
+            convertedImport.add(importMap);
+        }
+    }
+
+    private static void convertImportShortNotation(List<Map<String, Import>> convertImport, String fileFullName) {
+        Import importObject = new Import();
+        importObject.setFile(fileFullName);
+        Map<String, Import> importMap = new HashMap<>();
+        Optional<String> fileNameWithoutExtension = getFileNameWithoutExtension(getFileName(fileFullName));
+        if (fileNameWithoutExtension.isPresent()) {
+            importMap.put(fileNameWithoutExtension.get().replaceAll("/", "_"), importObject);
+            convertImport.add(importMap);
+        }
+    }
+
+    private static Optional<String> getFileNameWithoutExtension(String fileName) {
+        if (Objects.isNull(fileName)) {
+            return Optional.empty();
+        }
+        return !fileName.contains(".") ? Optional.of(fileName)
+                : Optional.of(fileName.substring(0, fileName.lastIndexOf('.')));
+    }
+
+
+    private static String getFileName(String relativeFileName) {
+        if (relativeFileName.contains("../")) {
+            return relativeFileName.replace("../", "");
+        } else {
+            return relativeFileName;
+        }
+    }
+}