fix: Set Artifact ID using the static method. (#1938)

core/src/main/java/com/google/cloud/sql/ConnectorRegistry.java

@@ -64,6 +64,6 @@ public static void reset() {
    * @throws IllegalStateException if the SQLAdmin client has already been initialized
    */
   public static void addArtifactId(String artifactId) {
-    InternalConnectorRegistry.getInstance().addArtifactId(artifactId);
+    InternalConnectorRegistry.addArtifactId(artifactId, false);
   }
 }

core/src/main/java/com/google/cloud/sql/core/InternalConnectorRegistry.java

@@ -231,16 +231,33 @@ private static String getVersion() {
    * Internal use only: Sets the default string which is appended to the SQLAdmin API client
    * User-Agent header.
    *
-   * <p>This is used by the specific database connector socket factory implementations to append
-   * their database name to the user agent.
+   * @param artifactId is the Artifact ID.
+   * @param addVersion whether the version should be appended to the ID.
    */
-  public static void addArtifactId(String artifactId) {
-    String userAgent = artifactId + "/" + version;
+  public static void addArtifactId(String artifactId, boolean addVersion) {
+    String userAgent = artifactId;
+
+    if (addVersion) {
+      userAgent += "/" + version;
+    }
     if (!userAgents.contains(userAgent)) {
       userAgents.add(userAgent);
     }
   }
 
+  /**
+   * Internal use only: Sets the default string which is appended to the SQLAdmin API client
+   * User-Agent header.
+   *
+   * <p>This is used by the specific database connector socket factory implementations to append
+   * their database name to the user agent. The version is appended to the ID.
+   *
+   * @param artifactId is the Artifact ID.
+   */
+  public static void addArtifactId(String artifactId) {
+    addArtifactId(artifactId, true);
+  }
+
   /** Resets the values of User Agent fields for unit tests. */
   @VisibleForTesting
   static void resetUserAgent() {