Upgraded servlet-api version to 3.0.1

[sdc.git] / openecomp-be / lib / openecomp-core-lib / openecomp-zusammen-lib / openecomp-zusammen-core / src / main / java / org / openecomp / core / zusammen / impl / CassandraConnectionInitializer.java

diff --git a/openecomp-be/lib/openecomp-core-lib/openecomp-zusammen-lib/openecomp-zusammen-core/src/main/java/org/openecomp/core/zusammen/impl/CassandraConnectionInitializer.java b/openecomp-be/lib/openecomp-core-lib/openecomp-zusammen-lib/openecomp-zusammen-core/src/main/java/org/openecomp/core/zusammen/impl/CassandraConnectionInitializer.java
index 8eeeb1e..7944999 100644 (file)
--- a/openecomp-be/lib/openecomp-core-lib/openecomp-zusammen-lib/openecomp-zusammen-core/src/main/java/org/openecomp/core/zusammen/impl/CassandraConnectionInitializer.java
+++ b/openecomp-be/lib/openecomp-core-lib/openecomp-zusammen-lib/openecomp-zusammen-core/src/main/java/org/openecomp/core/zusammen/impl/CassandraConnectionInitializer.java
@@ -16,85 +16,75 @@
 
 package org.openecomp.core.zusammen.impl;
 
+import java.util.function.Supplier;
 import org.apache.commons.lang3.StringUtils;
-
 import org.openecomp.core.nosqldb.util.CassandraUtils;
 
-import java.util.function.Supplier;
-
-import javax.servlet.ServletContextEvent;
-import javax.servlet.ServletContextListener;
-
-public class CassandraConnectionInitializer implements ServletContextListener {
-
-  private static final String CASSANDRA_PREFIX = "cassandra.";
-  private static final String DATA_CENTER_PROPERTY_NAME = CASSANDRA_PREFIX + "datacenter";
-  private static final String CONSISTENCY_LEVEL_PROPERTY_NAME =
-      CASSANDRA_PREFIX + "consistency.level";
-  private static final String NODES_PROPERTY_NAME = CASSANDRA_PREFIX + "nodes";
-  private static final String AUTHENTICATE_PROPERTY_NAME = CASSANDRA_PREFIX + "authenticate";
-  private static final String SSL_PROPERTY_NAME = CASSANDRA_PREFIX + "ssl";
-  private static final String TRUSTSTORE_PROPERTY_NAME = CASSANDRA_PREFIX + "truststore";
-  private static final String TRUSTSTORE_PASSWORD_PROPERTY_NAME =
-      CASSANDRA_PREFIX + "truststore.password";
-  private static final String USER_PROPERTY_NAME = CASSANDRA_PREFIX + "user";
-  private static final String PASSWORD_PROPERTY_NAME = CASSANDRA_PREFIX + "password";
-  private static final String KEYSPACE_PROPERTY_NAME = CASSANDRA_PREFIX + "keyspace";
-  private static final String ZUSAMMEN = "zusammen";
-
-  @Override
-  public void contextInitialized(ServletContextEvent servletContextEvent) {
-    setCassandraConnectionPropertiesToSystem();
-  }
-
-  public static void setCassandraConnectionPropertiesToSystem() {
-    DeferredInitializer.init();
-  }
-
-  @Override
-  public void contextDestroyed(ServletContextEvent servletContextEvent) {
-    // no-op, required by the interface
-  }
-
-  private static class DeferredInitializer {
-
-    static {
-      setSystemProperty(NODES_PROPERTY_NAME, () ->
-          StringUtils.join(CassandraUtils.getAddresses(), ','));
-      setBooleanSystemProperty(AUTHENTICATE_PROPERTY_NAME, CassandraUtils::isAuthenticate);
-      setBooleanSystemProperty(SSL_PROPERTY_NAME, CassandraUtils::isSsl);
-      setSystemProperty(TRUSTSTORE_PROPERTY_NAME, CassandraUtils::getTruststore);
-      setSystemProperty(TRUSTSTORE_PASSWORD_PROPERTY_NAME, CassandraUtils::getTruststorePassword);
-      setSystemProperty(USER_PROPERTY_NAME, CassandraUtils::getUser);
-      setSystemProperty(PASSWORD_PROPERTY_NAME, CassandraUtils::getPassword);
-      setSystemProperty(KEYSPACE_PROPERTY_NAME, () -> ZUSAMMEN);
-      setNullableSystemProperty(DATA_CENTER_PROPERTY_NAME, CassandraUtils::getLocalDataCenter);
-      setNullableSystemProperty(CONSISTENCY_LEVEL_PROPERTY_NAME,
-          CassandraUtils::getConsistencyLevel);
-    }
-
-    private static void setSystemProperty(String name, Supplier<String> valueSupplier) {
-
-      if (System.getProperty(name) == null) {
-        System.setProperty(name, valueSupplier.get());
-      }
+public class CassandraConnectionInitializer {
+
+    private static final String CASSANDRA_PREFIX = "cassandra.";
+    private static final String DATA_CENTER_PROPERTY_NAME = CASSANDRA_PREFIX + "datacenter";
+    private static final String CONSISTENCY_LEVEL_PROPERTY_NAME =
+            CASSANDRA_PREFIX + "consistency.level";
+    private static final String NODES_PROPERTY_NAME = CASSANDRA_PREFIX + "nodes";
+    private static final String AUTHENTICATE_PROPERTY_NAME = CASSANDRA_PREFIX + "authenticate";
+    private static final String SSL_PROPERTY_NAME = CASSANDRA_PREFIX + "ssl";
+    private static final String TRUSTSTORE_PROPERTY_NAME = CASSANDRA_PREFIX + "truststore";
+    private static final String TRUSTSTORE_PASSWORD_PROPERTY_NAME =
+            CASSANDRA_PREFIX + "truststore.password";
+    private static final String USER_PROPERTY_NAME = CASSANDRA_PREFIX + "user";
+    private static final String PASSWORD_PROPERTY_NAME = CASSANDRA_PREFIX + "password";
+    private static final String KEYSPACE_PROPERTY_NAME = CASSANDRA_PREFIX + "keyspace";
+    private static final String ZUSAMMEN = "zusammen";
+
+    private CassandraConnectionInitializer() {
+        // static utility class, prevent instantiation
     }
 
-    private static void setBooleanSystemProperty(String name, Supplier<Boolean> valueSupplier) {
-      setSystemProperty(name, () -> Boolean.toString(valueSupplier.get()));
+    public static void setCassandraConnectionPropertiesToSystem() {
+        DeferredInitializer.init();
     }
 
-    private static void setNullableSystemProperty(String name, Supplier<String> valueSupplier) {
-
-      if ((System.getProperty(name) == null) && (valueSupplier.get() != null)) {
-        System.setProperty(name, valueSupplier.get());
-      }
-    }
-
-    private DeferredInitializer() { }
-
-    public static void init() {
-      // just to ensure static initialization
+    private static class DeferredInitializer {
+
+        static {
+            setSystemProperty(NODES_PROPERTY_NAME, () ->
+                                                           StringUtils.join(CassandraUtils.getAddresses(), ','));
+            setBooleanSystemProperty(AUTHENTICATE_PROPERTY_NAME, CassandraUtils::isAuthenticate);
+            setBooleanSystemProperty(SSL_PROPERTY_NAME, CassandraUtils::isSsl);
+            setSystemProperty(TRUSTSTORE_PROPERTY_NAME, CassandraUtils::getTruststore);
+            setSystemProperty(TRUSTSTORE_PASSWORD_PROPERTY_NAME, CassandraUtils::getTruststorePassword);
+            setSystemProperty(USER_PROPERTY_NAME, CassandraUtils::getUser);
+            setSystemProperty(PASSWORD_PROPERTY_NAME, CassandraUtils::getPassword);
+            setSystemProperty(KEYSPACE_PROPERTY_NAME, () -> ZUSAMMEN);
+            setNullableSystemProperty(DATA_CENTER_PROPERTY_NAME, CassandraUtils::getLocalDataCenter);
+            setNullableSystemProperty(CONSISTENCY_LEVEL_PROPERTY_NAME,
+                    CassandraUtils::getConsistencyLevel);
+        }
+
+        private DeferredInitializer() { }
+
+        @SuppressWarnings("EmptyMethod")
+        static void init() {
+            // no-op, just to ensure static initialization
+        }
+
+        private static void setSystemProperty(String name, Supplier<String> valueSupplier) {
+
+            if (System.getProperty(name) == null) {
+                System.setProperty(name, valueSupplier.get());
+            }
+        }
+
+        private static void setBooleanSystemProperty(String name, Supplier<Boolean> valueSupplier) {
+            setSystemProperty(name, () -> Boolean.toString(valueSupplier.get()));
+        }
+
+        private static void setNullableSystemProperty(String name, Supplier<String> valueSupplier) {
+
+            if ((System.getProperty(name) == null) && (valueSupplier.get() != null)) {
+                System.setProperty(name, valueSupplier.get());
+            }
+        }
     }
-  }
 }