Allow storing database password in environment variables

This patch allows to store and get database passwor from
environment variables. This is needed if we want to send those
variables by helm secrets.

Issue-ID: OOM-2287
Change-Id: Id9ea8f43dd07c2b0cdeaa6d14a8033336d26923f
Signed-off-by: Dominik Mizyn <d.mizyn@samsung.com>

diff --git a/models-provider/src/main/java/org/onap/policy/models/provider/impl/DatabasePolicyModelsProviderImpl.java b/models-provider/src/main/java/org/onap/policy/models/provider/impl/DatabasePolicyModelsProviderImpl.java
index 08c01b6..50c7390 100644 (file)
--- a/models-provider/src/main/java/org/onap/policy/models/provider/impl/DatabasePolicyModelsProviderImpl.java
+++ b/models-provider/src/main/java/org/onap/policy/models/provider/impl/DatabasePolicyModelsProviderImpl.java
@@ -101,7 +101,7 @@ public class DatabasePolicyModelsProviderImpl implements PolicyModelsProvider {
         daoParameters.setPersistenceUnit(parameters.getPersistenceUnit());
 
         // Decode the password using Base64
-        String decodedPassword = new String(Base64.getDecoder().decode(parameters.getDatabasePassword()));
+        String decodedPassword = new String(Base64.getDecoder().decode(getValue(parameters.getDatabasePassword())));
 
         // @formatter:off
         Properties jdbcProperties = new Properties();
@@ -125,6 +125,13 @@ public class DatabasePolicyModelsProviderImpl implements PolicyModelsProvider {
         }
     }
 
+    private String getValue(final String value) {
+        if (value != null && value.matches("[$][{].*[}]$")) {
+            return System.getenv(value.substring(2, value.length() - 1));
+        }
+        return value;
+    }
+
     @Override
     public void close() throws PfModelException {
         LOGGER.debug("closing the database connection to {} using persistence unit {}", parameters.getDatabaseUrl(),