junits in policy-management

- add additional junits for policy-management module
- allow for no configuration pdp-d start up.
- minor changes junits for policy-endpoints to avoid
  race conditions in jenkins environment, starting up, and
  shutting down servers.

Issue-ID: POLICY-109
Change-Id: Ibccefeb5d7cf762da27fe3282887df18d79db5df
Signed-off-by: Jorge Hernandez <jh1730@att.com>

5 files changed, 257 insertions, 60 deletions

diff --git a/policy-management/src/main/java/org/onap/policy/drools/persistence/SystemPersistence.java b/policy-management/src/main/java/org/onap/policy/drools/persistence/SystemPersistence.java
index bdda8e84..2390fc89 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/persistence/SystemPersistence.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/persistence/SystemPersistence.java
@@ -182,10 +182,9 @@ class SystemPropertiesPersistence implements SystemPersistence {
 			}
     	}
 	  	
-		try {
-	    	File controllerPropertiesFile = controllerPropertiesPath.toFile();
-	    	FileWriter writer = new FileWriter(controllerPropertiesFile);
-	    	properties.store(writer, "Machine created Policy Controller Configuration");
+		File controllerPropertiesFile = controllerPropertiesPath.toFile();
+		try (FileWriter writer = new FileWriter(controllerPropertiesFile)) {
+			properties.store(writer, "Machine created Policy Controller Configuration");
 		} catch (Exception e) {
 			logger.warn("{}: cannot be STORED", controllerName, e);
 			return false;
diff --git a/policy-management/src/main/java/org/onap/policy/drools/system/Main.java b/policy-management/src/main/java/org/onap/policy/drools/system/Main.java
index fe0cc01f..49dfafca 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/system/Main.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/system/Main.java
@@ -21,6 +21,8 @@
 package org.onap.policy.drools.system;
 
 import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Properties;
@@ -54,9 +56,25 @@ public class Main {
 	 * main
 	 * 
 	 * @param args program arguments
+	 * @throws IOException 
 	 */
 	public static void main(String args[]) {
 		
+		/* make sure the configuration directory exists */
+		
+		Path configDir = Paths.get(SystemPersistence.CONFIG_DIR_NAME);
+		if (Files.notExists(configDir)) {
+			try {
+				Files.createDirectories(configDir);
+			} catch (IOException e) {
+				throw new IllegalStateException("cannot create " + SystemPersistence.CONFIG_DIR_NAME, e);
+			}
+		}
+		
+		if (!Files.isDirectory(configDir))
+			throw new IllegalStateException
+						("config directory: " + configDir + " is not a directory");
+		
 		/* logging defaults */
 		
 		if (System.getProperty(LOGBACK_CONFIGURATION_FILE_SYSTEM_PROPERTY) == null)
@@ -66,24 +84,23 @@ public class Main {
 		
 		PolicyEngine.manager.boot(args);
 		
-		Logger logger = LoggerFactory.getLogger(Main.class);
+		/* start logger */
 		
-		File configDir = new File(SystemPersistence.CONFIG_DIR_NAME);
-		
-		if (!configDir.isDirectory()) {
-			throw new IllegalArgumentException
-						("config directory: " + configDir.getAbsolutePath() + 
-						 " not found");
-		}
+		Logger logger = LoggerFactory.getLogger(Main.class);		
 		
 		/* 1. Configure the Engine */
-
+		
+		Path policyEnginePath = Paths.get(configDir.toString(), SystemPersistence.PROPERTIES_FILE_ENGINE);
 		try {
-			Path policyEnginePath = Paths.get(configDir.toPath().toString(), SystemPersistence.PROPERTIES_FILE_ENGINE);
-			Properties properties = PropertyUtil.getProperties(policyEnginePath.toFile());
-			PolicyEngine.manager.configure(properties);
+			if (Files.exists(policyEnginePath))
+				PolicyEngine.manager.configure(PropertyUtil.getProperties(policyEnginePath.toFile()));
+			else
+				PolicyEngine.manager.configure(PolicyEngine.manager.defaultTelemetryConfig());
 		} catch (Exception e) {
-			logger.warn("Main: cannot initialize {} because of {}", PolicyEngine.manager, e.getMessage(), e);
+			logger.warn("Main: {} could not find custom configuration in {}.", 
+					    PolicyEngine.manager, SystemPersistence.PROPERTIES_FILE_ENGINE, e);
+			
+			/* continue without telemetry or other custom components - this is OK */
 		}
 		
 		/* 2. Start the Engine with the basic services only (no Policy Controllers) */
@@ -102,7 +119,7 @@ public class Main {
 		
 		/* 3. Create and start the controllers */
 		
-		File[] controllerFiles = configDir.listFiles();
+		File[] controllerFiles = configDir.toFile().listFiles();
 		for (File config : controllerFiles) {
 
 			if (config.getName().endsWith(SystemPersistence.PROPERTIES_FILE_CONTROLLER_SUFFIX)) {
diff --git a/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java b/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java
index 36821659..d7e0ecdd 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java
@@ -45,6 +45,7 @@ import org.onap.policy.drools.properties.Startable;
 import org.onap.policy.drools.protocol.coders.EventProtocolCoder;
 import org.onap.policy.drools.protocol.configuration.ControllerConfiguration;
 import org.onap.policy.drools.protocol.configuration.PdpdConfiguration;
+import org.onap.policy.drools.server.restful.RestManager;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
@@ -71,17 +72,21 @@ import com.google.gson.GsonBuilder;
  * <br>
  * PolicyEngine 1 --- 1 ManagementServer
  */
-public interface PolicyEngine extends Startable, Lockable, TopicListener {
+public interface PolicyEngine extends Startable, Lockable, TopicListener {	
+	/**
+	 * Default Telemetry Server Port
+	 */
+	public static final int TELEMETRY_SERVER_DEFAULT_PORT = 9696;
 	
 	/**
-	 * Default Config Server Port
+	 * Default Telemetry Server Hostname
 	 */
-	public static final int CONFIG_SERVER_DEFAULT_PORT = 9696;
+	public static final String TELEMETRY_SERVER_DEFAULT_HOST = "localhost";
 	
 	/**
-	 * Default Config Server Hostname
+	 * Default Telemetry Server Name
 	 */
-	public static final String CONFIG_SERVER_DEFAULT_HOST = "localhost";
+	public static final String TELEMETRY_SERVER_DEFAULT_NAME = "TELEMETRY";
 	
 	/**
 	 * Boot the engine
@@ -89,7 +94,7 @@ public interface PolicyEngine extends Startable, Lockable, TopicListener {
 	 * @param cliArgs command line arguments
 	 */
 	public void boot(String cliArgs[]);
-	
+
 	/**
 	 * configure the policy engine according to the given properties
 	 * 
@@ -308,6 +313,13 @@ public interface PolicyEngine extends Startable, Lockable, TopicListener {
 	 * Invoked when the host goes into the standby state.
 	 */
 	public void deactivate();
+		
+	/**
+	 * produces a default telemetry configuration
+	 * 
+	 * @return policy engine configuration
+	 */
+	public Properties defaultTelemetryConfig();
 	
 	/**
 	 * Policy Engine Manager
@@ -319,6 +331,7 @@ public interface PolicyEngine extends Startable, Lockable, TopicListener {
  * Policy Engine Manager Implementation
  */
 class PolicyEngineManager implements PolicyEngine {
+	
 	/**
 	 * logger
 	 */
@@ -390,6 +403,41 @@ class PolicyEngineManager implements PolicyEngine {
 		}
 	}
 	
+	
+	/**
+	 * produces a minimum configuration with the telemetry service enabled
+	 * 
+	 * @return policy engine configuration
+	 */
+	@Override
+	public final Properties defaultTelemetryConfig() {
+		Properties defaultConfig = new Properties();
+		
+		defaultConfig.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES, "TELEMETRY");
+		defaultConfig.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + 
+									TELEMETRY_SERVER_DEFAULT_NAME +
+									PolicyProperties.PROPERTY_HTTP_HOST_SUFFIX, 
+									TELEMETRY_SERVER_DEFAULT_HOST);
+		defaultConfig.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + 
+									TELEMETRY_SERVER_DEFAULT_NAME +
+									PolicyProperties.PROPERTY_HTTP_PORT_SUFFIX,
+									"" + TELEMETRY_SERVER_DEFAULT_PORT);
+		defaultConfig.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + 
+								   TELEMETRY_SERVER_DEFAULT_NAME +
+									PolicyProperties.PROPERTY_HTTP_REST_PACKAGES_SUFFIX,
+									RestManager.class.getPackage().getName());
+		defaultConfig.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + 
+								   TELEMETRY_SERVER_DEFAULT_NAME +
+									PolicyProperties.PROPERTY_HTTP_SWAGGER_SUFFIX,
+									true);
+		defaultConfig.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + 
+						   TELEMETRY_SERVER_DEFAULT_NAME +
+							PolicyProperties.PROPERTY_MANAGED_SUFFIX,
+							false);
+		
+		return defaultConfig;
+	}
+	
 	@Override
 	public synchronized void configure(Properties properties) {
 		
@@ -813,7 +861,7 @@ class PolicyEngineManager implements PolicyEngine {
 				logger.error("{}: cannot start http-server {} because of {}", this, 
 						     httpServer, e.getMessage(), e);
 			}
-		}		
+		}	
 		
 		/* policy-engine dispatch pre stop hook */
 		for (PolicyEngineFeatureAPI feature : PolicyEngineFeatureAPI.providers.getList()) {
diff --git a/policy-management/src/test/java/org/onap/policy/drools/system/test/PolicyEngineTest.java b/policy-management/src/test/java/org/onap/policy/drools/system/test/PolicyEngineTest.java
index 1a771032..4928ca0a 100644
--- a/policy-management/src/test/java/org/onap/policy/drools/system/test/PolicyEngineTest.java
+++ b/policy-management/src/test/java/org/onap/policy/drools/system/test/PolicyEngineTest.java
@@ -22,15 +22,19 @@ package org.onap.policy.drools.system.test;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Properties;
 
-import javax.ws.rs.core.Response;
-
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
+import org.junit.FixMethodOrder;
 import org.junit.Test;
-import org.onap.policy.drools.http.client.HttpClient;
-import org.onap.policy.drools.http.server.HttpServletServer;
+import org.junit.runners.MethodSorters;
+import org.onap.policy.drools.persistence.SystemPersistence;
+import org.onap.policy.drools.properties.PolicyProperties;
 import org.onap.policy.drools.system.PolicyController;
 import org.onap.policy.drools.system.PolicyEngine;
 import org.slf4j.Logger;
@@ -39,63 +43,192 @@ import org.slf4j.LoggerFactory;
 /**
  * PolicyEngine unit tests
  */
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
 public class PolicyEngineTest {
+	/**
+	 * Default Telemetry port for JUnits
+	 */
+	public static final int DEFAULT_TELEMETRY_PORT = 9698;
+	
+	/**
+	 * Test JUnit Controller Name
+	 */
+	public static final String TEST_CONTROLLER_NAME = "unnamed";
+	
+	/**
+	 * Controller Configuration File
+	 */
+	public static final String TEST_CONTROLLER_FILE = TEST_CONTROLLER_NAME + "-controller.properties";
+	
+	/**
+	 * Controller Configuration Backup File
+	 */
+	public static final String TEST_CONTROLLER_FILE_BAK = TEST_CONTROLLER_NAME + "-controller.properties.bak";
+	
+	/**
+	 * logger
+	 */
 	private static Logger logger = LoggerFactory.getLogger(PolicyEngineTest.class);
 	
+	/**
+	 * clean up working directory
+	 */
+	protected static void cleanUpWorkingDir() {
+		Path testControllerPath = Paths.get(SystemPersistence.CONFIG_DIR_NAME, TEST_CONTROLLER_FILE);
+		try {
+			Files.deleteIfExists(testControllerPath);
+		} catch (Exception e) {
+			logger.info("Problem cleaning {}", testControllerPath, e);
+		}
+		
+		Path testControllerBakPath = Paths.get(SystemPersistence.CONFIG_DIR_NAME, TEST_CONTROLLER_FILE_BAK);
+		try {
+			Files.deleteIfExists(testControllerBakPath);
+		} catch (Exception e) {
+			logger.info("Problem cleaning {}", testControllerBakPath, e);
+		}
+	}
+	
 	@BeforeClass
-	public static void startUp() {
-		logger.info("----- TEST: startUp() ---------");
+	public static void startUp() throws IOException {
+		logger.info("enter");
 		
-		Properties engineProperties = new Properties();
-		engineProperties.put("http.server.services", "CONFIG");
-		engineProperties.put("http.server.services.CONFIG.host", "0.0.0.0");
-		engineProperties.put("http.server.services.CONFIG.port", "9696");
-		engineProperties.put("http.server.services.CONFIG.restPackages", "org.onap.policy.drools.server.restful");
+		cleanUpWorkingDir();
 		
-		assertFalse(PolicyEngine.manager.isAlive());
+		/* ensure presence of config directory */
+		Path configDir = Paths.get(SystemPersistence.CONFIG_DIR_NAME);
+		if (Files.notExists(configDir))
+			Files.createDirectories(configDir);
+	}
+	
+	@AfterClass
+	public static void tearDown() throws IOException {	
+		logger.info("enter");		
+		cleanUpWorkingDir();
+	}
+	
+	@Test
+	public void test100Configure() {
+		logger.info("enter");
 		
-		PolicyEngine.manager.configure(engineProperties);		
+		Properties engineProps = PolicyEngine.manager.defaultTelemetryConfig();
+		
+		/* override default port */
+		engineProps.put(PolicyProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + 
+						PolicyEngine.TELEMETRY_SERVER_DEFAULT_NAME +
+						PolicyProperties.PROPERTY_HTTP_PORT_SUFFIX,
+						""+DEFAULT_TELEMETRY_PORT);
+		
+		assertFalse(PolicyEngine.manager.isAlive());	
+		PolicyEngine.manager.configure(engineProps);	
 		assertFalse(PolicyEngine.manager.isAlive());
 		
+		logger.info("policy-engine {} has configuration {}", PolicyEngine.manager, engineProps);
+	}
+	
+	@Test
+	public void test200Start() {
+		logger.info("enter");
+		
 		PolicyEngine.manager.start();
+		
 		assertTrue(PolicyEngine.manager.isAlive());
 		assertFalse(PolicyEngine.manager.isLocked());
-		assertTrue(HttpServletServer.factory.get(9696).isAlive());
+		assertFalse(PolicyEngine.manager.getHttpServers().isEmpty());
+		assertTrue(PolicyEngine.manager.getHttpServers().get(0).isAlive());
 	}
 	
-	@AfterClass
-	public static void tearDown() {	
-		logger.info("----- TEST: tearDown() ---------");
+	@Test
+	public void test300Lock() {
+		logger.info("enter");
 		
-		PolicyEngine.manager.stop();
-		assertFalse(PolicyEngine.manager.isAlive());
+		PolicyEngine.manager.lock();
+		
+		assertTrue(PolicyEngine.manager.isAlive());
+		assertTrue(PolicyEngine.manager.isLocked());
+		assertFalse(PolicyEngine.manager.getHttpServers().isEmpty());
+		assertTrue(PolicyEngine.manager.getHttpServers().get(0).isAlive());
+	}
+	
+	@Test
+	public void test301Unlock() {
+		logger.info("enter");
+		
+		PolicyEngine.manager.unlock();
+		
+		assertTrue(PolicyEngine.manager.isAlive());
+		assertFalse(PolicyEngine.manager.isLocked());
+		assertFalse(PolicyEngine.manager.getHttpServers().isEmpty());
+		assertTrue(PolicyEngine.manager.getHttpServers().get(0).isAlive());
 	}
 	
 	@Test
-	public void addController() throws Exception {
-		logger.info("----- TEST: addController() ---------");
+	public void test400ControllerAdd() throws Exception {
+		logger.info("enter");
 		
 		Properties controllerProperties = new Properties();
-		controllerProperties.put("controller.name", "unnamed");
+		controllerProperties.put(PolicyProperties.PROPERTY_CONTROLLER_NAME, TEST_CONTROLLER_NAME);		
+		PolicyEngine.manager.createPolicyController(TEST_CONTROLLER_NAME, controllerProperties);
 		
-		PolicyEngine.manager.createPolicyController("unnamed", controllerProperties);
 		assertTrue(PolicyController.factory.inventory().size() == 1);
+	}
+	
+	@Test
+	public void test401ControllerVerify() {
+		logger.info("enter");
 		
-		HttpClient client = HttpClient.factory.build("telemetry", false, false, 
-                                                     "localhost", 9696, "policy/pdp", 
-                                                      null, null, false);
-		Response response = client.get("engine");
-		Object body = HttpClient.getBody(response, Object.class);
-		logger.info("policy-engine: {}", body);
+		PolicyController testController = PolicyController.factory.get(TEST_CONTROLLER_NAME);
 		
-		assertTrue(response.getStatus() == 200);
+		assertFalse(testController.isAlive());
+		assertFalse(testController.isLocked());	
+
+		testController.start();
+		
+		assertTrue(testController.isAlive());
+		assertFalse(testController.isLocked());	
+	}
+	
+	@Test
+	public void test500Deactivate() throws Exception {
+		logger.info("enter");
 		
-		PolicyController testController = PolicyController.factory.get("unnamed");
-		assertFalse(testController.getDrools().isAlive());
-		assertFalse(testController.getDrools().isLocked());
+		PolicyEngine.manager.deactivate();
 		
-		PolicyEngine.manager.removePolicyController("unnamed");
+		PolicyController testController = PolicyController.factory.get(TEST_CONTROLLER_NAME);		
+		assertFalse(testController.isAlive());
+		assertTrue(testController.isLocked());	
+		assertTrue(PolicyEngine.manager.isLocked());
+		assertTrue(PolicyEngine.manager.isAlive());
+	}
+	
+	@Test
+	public void test501Activate() throws Exception {
+		logger.info("enter");
+		
+		PolicyEngine.manager.activate();
+		
+		PolicyController testController = PolicyController.factory.get(TEST_CONTROLLER_NAME);		
+		assertTrue(testController.isAlive());
+		assertFalse(testController.isLocked());	
+		assertFalse(PolicyEngine.manager.isLocked());
+		assertTrue(PolicyEngine.manager.isAlive());
+	}
+	
+	@Test
+	public void test900ControllerRemove() throws Exception {
+		logger.info("enter");
+		
+		PolicyEngine.manager.removePolicyController(TEST_CONTROLLER_NAME);		
 		assertTrue(PolicyController.factory.inventory().isEmpty());
 	}
+	
+	@Test
+	public void test901Stop() {
+		logger.info("enter");
+		
+		PolicyEngine.manager.stop();
+		assertFalse(PolicyEngine.manager.isAlive());
+	}
 
 }
diff --git a/policy-management/src/test/resources/logback-test.xml b/policy-management/src/test/resources/logback-test.xml
index 58e3248e..4a3b561f 100644
--- a/policy-management/src/test/resources/logback-test.xml
+++ b/policy-management/src/test/resources/logback-test.xml
@@ -10,7 +10,7 @@
     
     <logger name="org.onap.policy.drools.system.test" level="INFO"/>
 
-    <root level="warn">
+    <root level="WARN">
         <appender-ref ref="STDOUT"/>
     </root>