Initial Interface for remote Configuration

Issue-ID: AAF-378
Change-Id: I320b0c23ece63199a49a5d8b1706868d2c4e5355
Signed-off-by: Instrumental <jonathan.gathman@att.com>

1 files changed, 140 insertions, 0 deletions

diff --git a/auth/auth-cass/src/main/java/org/onap/aaf/auth/dao/cass/ConfigDAO.java b/auth/auth-cass/src/main/java/org/onap/aaf/auth/dao/cass/ConfigDAO.java
new file mode 100644
index 00000000..df284044
--- /dev/null
+++ b/auth/auth-cass/src/main/java/org/onap/aaf/auth/dao/cass/ConfigDAO.java
@@ -0,0 +1,140 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T 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.aaf.auth.dao.cass;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.List;
+
+import org.onap.aaf.auth.dao.AbsCassDAO;
+import org.onap.aaf.auth.dao.CassDAOImpl;
+import org.onap.aaf.auth.dao.Loader;
+import org.onap.aaf.auth.dao.Streamer;
+import org.onap.aaf.auth.env.AuthzTrans;
+import org.onap.aaf.auth.layer.Result;
+import org.onap.aaf.misc.env.APIException;
+
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.Row;
+
+/**
+ * CredDAO manages credentials. 
+ * @author Jonathan
+ * Date: 6/25/18
+ */
+public class ConfigDAO extends CassDAOImpl<AuthzTrans,ConfigDAO.Data> {
+    public static final String TABLE = "config";
+    public static final int CACHE_SEG = 0x40; // yields segment 0x0-0x3F
+	private PSInfo psName;
+    
+    public ConfigDAO(AuthzTrans trans, Cluster cluster, String keyspace) throws APIException, IOException {
+        super(trans, ConfigDAO.class.getSimpleName(),cluster, keyspace, Data.class,TABLE, readConsistency(trans,TABLE), writeConsistency(trans,TABLE));
+        init(trans);
+    }
+
+    public ConfigDAO(AuthzTrans trans, AbsCassDAO<AuthzTrans,?> aDao) throws APIException, IOException {
+        super(trans, ConfigDAO.class.getSimpleName(),aDao, Data.class,TABLE, readConsistency(trans,TABLE), writeConsistency(trans,TABLE));
+        init(trans);
+    }
+    
+    public static final int KEYLIMIT = 2;
+	public static class Data  {
+        public String					name;
+        public String					tag;
+        public String					value;
+    }
+
+    private static class ConfigLoader extends Loader<Data> implements Streamer<Data>{
+		public static final int MAGIC=2673849;
+    	public static final int VERSION=1;
+    	public static final int BUFF_SIZE=48; 
+
+    	public static final ConfigLoader deflt = new ConfigLoader(KEYLIMIT);
+    	public ConfigLoader(int keylimit) {
+            super(keylimit);
+        }
+
+    	@Override
+        public Data load(Data data, Row row) {
+        	data.name = row.getString(0);
+            data.tag = row.getString(1);
+            data.value = row.getString(2);
+            return data;
+        }
+
+        @Override
+        protected void key(Data data, int idx, Object[] obj) {
+            obj[idx] = data.name;
+            obj[++idx] = data.tag;
+        }
+
+        @Override
+        protected void body(Data data, int _idx, Object[] obj) {
+            obj[_idx] = data.value;
+        }
+
+		@Override
+		public void marshal(Data data, DataOutputStream os) throws IOException {
+			writeHeader(os,MAGIC,VERSION);
+			writeString(os, data.name);
+			writeString(os, data.tag);
+			writeString(os, data.value);
+		}
+
+		@Override
+		public void unmarshal(Data data, DataInputStream is) throws IOException {
+			/*int version = */readHeader(is,MAGIC,VERSION);
+			// If Version Changes between Production runs, you'll need to do a switch Statement, and adequately read in fields
+			byte[] buff = new byte[BUFF_SIZE];
+			data.name = readString(is,buff);
+			data.tag = readString(is,buff);
+			data.value = readString(is,buff);
+		}
+    }
+    
+    private void init(AuthzTrans trans) throws APIException, IOException {
+		String[] helpers = setCRUD(trans, TABLE, Data.class, ConfigLoader.deflt);
+
+		psName = new PSInfo(trans, SELECT_SP + helpers[FIELD_COMMAS] + " FROM " + TABLE +
+				" WHERE name = ?", ConfigLoader.deflt,readConsistency);
+    }
+    
+
+    /**
+     * Log Modification statements to History
+     *
+     * @param modified        which CRUD action was done
+     * @param data            entity data that needs a log entry
+     * @param overrideMessage if this is specified, we use it rather than crafting a history message based on data
+     */
+    @Override
+    protected void wasModified(AuthzTrans trans, CRUD modified, Data data, String ... override) {
+    	// not an auditable table.
+    }
+    
+	public Result<List<Data>> readName(AuthzTrans trans, String name) {
+		return psName.read(trans, R_TEXT, new Object[]{name});
+	}
+
+
+}