Extend SDNC persistent service to store CM

[ccsdk/features.git] / sdnr / wt / data-provider / dblib / src / main / java / org / onap / ccsdk / features / sdnr / wt / dataprovider / database / sqldb / data / HtUserdataManagerBase.java

diff --git a/sdnr/wt/data-provider/dblib/src/main/java/org/onap/ccsdk/features/sdnr/wt/dataprovider/database/sqldb/data/HtUserdataManagerBase.java b/sdnr/wt/data-provider/dblib/src/main/java/org/onap/ccsdk/features/sdnr/wt/dataprovider/database/sqldb/data/HtUserdataManagerBase.java
new file mode 100644 (file)
index 0000000..60f28d9
--- /dev/null
+++ b/sdnr/wt/data-provider/dblib/src/main/java/org/onap/ccsdk/features/sdnr/wt/dataprovider/database/sqldb/data/HtUserdataManagerBase.java
@@ -0,0 +1,126 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : ccsdk features
+ * ================================================================================
+ * Copyright (C) 2020 highstreet technologies GmbH Intellectual Property.
+ * All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ *
+ */
+package org.onap.ccsdk.features.sdnr.wt.dataprovider.database.sqldb.data;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.onap.ccsdk.features.sdnr.wt.dataprovider.model.HtUserdataManager;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public abstract class HtUserdataManagerBase implements HtUserdataManager {
+
+    private static final Logger LOG = LoggerFactory.getLogger(HtUserdataManagerBase.class);
+
+    private static final String USERDATA_DEFAULTS_FILENAME = "etc/userdata-defaults.json";
+    private static final JSONObject USERDATA_DEFAULTS_CONTENT = loadDefaults();
+
+    protected static JSONObject loadDefaults() {
+        File f = new File(USERDATA_DEFAULTS_FILENAME);
+        String content;
+        JSONObject o = null;
+        if (f.exists()) {
+            try {
+                content = Files.readString(f.toPath());
+                o = new JSONObject(content);
+            } catch (IOException e) {
+                LOG.warn("problem loading defaults: ", e);
+            } catch (JSONException e) {
+                LOG.warn("problem parsing defaults: ", e);
+            }
+        }
+        return o;
+    }
+
+    protected abstract String readUserdata(String username, String defaultValue);
+
+    @Override
+    public String getUserdata(String username) {
+        String json = this.readUserdata(username, "{}");
+        if (USERDATA_DEFAULTS_CONTENT != null) {
+            JSONObject merge = mergeData(new JSONObject(json), USERDATA_DEFAULTS_CONTENT);
+            json = merge.toString();
+        }
+        return json;
+    }
+
+    @Override
+    public String getUserdata(String username, String key) {
+        JSONObject o = new JSONObject(this.getUserdata(username));
+        return o.has(key) ? o.get(key).toString() : "{}";
+    }
+
+    @Override
+    public boolean setUserdata(String username, String key, String data) {
+        JSONObject o = new JSONObject();
+        o.put(key, new JSONObject(data));
+        return this.setUserdata(username, o.toString());
+    }
+
+    @Override
+    public boolean removeUserdata(String username, String key) {
+        JSONObject o = new JSONObject(this.getUserdata(username));
+        if (o.has(key)) {
+            o.remove(key);
+            return this.setUserdata(username, o.toString());
+        }
+        return true;
+    }
+
+    protected static JSONObject mergeData(JSONObject o, String key, JSONObject subObject) {
+        if (!o.has(key)) {
+            o.put(key, subObject);
+        } else {
+            JSONObject tmp = new JSONObject();
+            tmp.put(key, subObject);
+            o = mergeData(tmp, o);
+        }
+        return o;
+    }
+
+    protected static JSONObject mergeData(JSONObject source, JSONObject target) throws JSONException {
+        String[] keys = JSONObject.getNames(source);
+        if (keys == null) {
+            return target;
+        }
+        for (String key : keys) {
+            Object value = source.get(key);
+            if (!target.has(key)) {
+                // new value for "key":
+                target.put(key, value);
+            } else {
+                // existing value for "key" - recursively deep merge:
+                if (value instanceof JSONObject) {
+                    JSONObject valueJson = (JSONObject) value;
+                    mergeData(valueJson, target.getJSONObject(key));
+                } else {
+                    target.put(key, value);
+                }
+            }
+        }
+        return target;
+    }
+
+}