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/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aaf
 * * ===========================================================================
 * * Copyright © 2017 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====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package com.att.dao.aaf.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.security.NoSuchAlgorithmException;
import java.util.Properties;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;

import com.att.authz.env.AuthzEnv;
import com.att.authz.env.AuthzTrans;
import com.att.cadi.Hash;
import com.att.cadi.Symm;
import com.att.dao.CassAccess;
import com.att.dao.CassDAOImpl;
import com.att.inno.env.APIException;
import com.att.inno.env.Env;
import com.att.inno.env.Trans.Metric;
import com.datastax.driver.core.Cluster;

import junit.framework.Assert;

/**
 * Do Setup of Cassandra for Cassandra JUnit Testing
 * 
 *
 */
public class AbsJUCass {
	protected static final String AUTHZ = "authz";
	protected static Cluster cluster;
	protected static AuthzEnv env;
	protected static int iterations = 0;
	protected static float totals=0.0f;
	protected static float remote = 0.0f;
	protected static float json = 0.0f;
	protected static AuthzTrans trans;
	protected static boolean details = true;
	
	@BeforeClass 
	public static void startup() throws APIException, IOException {
		synchronized(AUTHZ) {
			if(env==null) {
				final String resource = "cadi.properties";
	            File f = new File("etc" + resource);
	            InputStream is=null;
	            Properties props = new Properties();
	            try {
	                if(f.exists()) {
	                    is = new FileInputStream(f);
	                } else {
	                    URL rsrc = ClassLoader.getSystemResource(resource);
	                    is = rsrc.openStream();
	                }
	                props.load(is);
	            } finally {
	                if(is==null) {
	                	env= new AuthzEnv();
	                    Assert.fail(resource + " must exist in etc dir, or in Classpath");
	                }
	                is.close();
	            }
				env = new AuthzEnv(props);
			}
		}
		cluster = CassAccess.cluster(env,"LOCAL");

		env.info().log("Connecting to Cluster");
		try {
			cluster.connect(AUTHZ);
		} catch(Exception e) {
			cluster=null;
			env.error().log(e);
			Assert.fail("Not able to connect to DB: " + e.getLocalizedMessage());
		}
		env.info().log("Connected");
		
		// Load special data here
		
		// WebPhone
		env.setProperty("java.naming.provider.url","ldap://ldap.webphone.att.com:389");
		env.setProperty("com.sun.jndi.ldap.connect.pool","true");
		
		iterations = 0;
		
	}
	
	@AfterClass
	public static void shutdown() {
		if(cluster!=null) {
			cluster.close();
			cluster = null;
		}
	}

	@Before
	public void newTrans() {
		trans = env.newTrans();
		
		trans.setProperty(CassDAOImpl.USER_NAME, System.getProperty("user.name"));
	}
	
	@After
	public void auditTrail() {
		if(totals==0) { // "updateTotals()" was not called... just do one Trans
			StringBuilder sb = new StringBuilder();
			Metric metric = trans.auditTrail(4, sb, Env.JSON, Env.REMOTE);
			if(details) {
				env.info().log(
				sb,
				"Total time:",
				totals += metric.total,
				"JSON time: ",
				metric.buckets[0],
				"REMOTE time: ",
				metric.buckets[1]
				);
			} else {
				totals += metric.total;
			}
		}
	}
	
	protected void updateTotals() {
		Metric metric = trans.auditTrail(0, null, Env.JSON, Env.REMOTE);
		totals+=metric.total;
		json  +=metric.buckets[0];
		remote+=metric.buckets[1];
	}


	@AfterClass
	public static void print() {
		float transTime;
		if(iterations==0) {
			transTime=totals;
		} else {
			transTime=totals/iterations;
		}
		env.info().log(
		"Total time:",
		totals,   
		"JSON time:",
		json,
		"REMOTE time:",
		remote,
		"Iterations:",
		iterations,
		"Transaction time:",
		transTime
		);
	}
	
	/**
	 * Take a User/Pass and turn into an MD5 Hashed BasicAuth
	 * 
	 * @param user
	 * @param pass
	 * @return
	 * @throws IOException
	 * @throws NoSuchAlgorithmException
	 */
	public static byte[] userPassToBytes(String user, String pass)
			throws IOException, NoSuchAlgorithmException {
		// Take the form of BasicAuth, so as to allow any character in Password
		// (this is an issue in 1.0)
		// Also, it makes it quicker to evaluate Basic Auth direct questions
		String ba = Symm.base64url.encode(user + ':' + pass);
		// Take MD5 Hash, so that data in DB can't be reversed out.
		return Hash.encryptMD5(ba.getBytes());
	}

}