Update the empty credential condition for Mongo and Postgres (#175)

Author: suresh-prakash

document-store/src/main/java/org/hypertrace/core/documentstore/model/config/ConnectionCredentials.java

@@ -26,4 +26,8 @@ public class ConnectionCredentials {
   public Optional<String> authDatabase() {
     return Optional.ofNullable(authDatabase);
   }
+
+  public boolean isEmpty() {
+    return username.isBlank() && password.isBlank();
+  }
 }

document-store/src/main/java/org/hypertrace/core/documentstore/model/config/mongo/MongoConnectionConfig.java

@@ -95,7 +95,7 @@ private static String getDatabaseOrDefault(@Nullable final String database) {
   @Nullable
   private static ConnectionCredentials getCredentialsOrDefault(
       @Nullable final ConnectionCredentials credentials, @Nullable final String database) {
-    if (credentials == null || ConnectionCredentials.builder().build().equals(credentials)) {
+    if (credentials == null || credentials.isEmpty()) {
       return null;
     }
 

document-store/src/main/java/org/hypertrace/core/documentstore/model/config/postgres/PostgresConnectionConfig.java

@@ -64,7 +64,7 @@ public Properties buildProperties() {
     final Properties properties = new Properties();
     final ConnectionCredentials credentials = credentials();
 
-    if (credentials != null) {
+    if (credentials != null && !credentials.isEmpty()) {
       properties.setProperty(PGProperty.USER.getName(), credentials.username());
       properties.setProperty(PGProperty.PASSWORD.getName(), credentials.password());
     }