Github user mattf-horton commented on a diff in the pull request:
https://github.com/apache/metron/pull/530#discussion_r133522636
--- Diff:
bundles-lib/src/main/java/org/apache/metron/bundles/BundleClassLoaders.java ---
@@ -73,19 +73,15 @@ private BundleClassLoaders() {
/**
* @return The singleton instance of the BundleClassLoaders
+ * @throws NotInitializedException if BundleClassLoaders has not been
init'd
*/
- public static BundleClassLoaders getInstance() {
- BundleClassLoaders result = bundleClassLoaders;
- if (result == null) {
- synchronized (BundleClassLoaders.class) {
- result = bundleClassLoaders;
- if (result == null) {
- bundleClassLoaders = new BundleClassLoaders();
- result = bundleClassLoaders;
- }
+ public static BundleClassLoaders getInstance() throws
NotInitializedException {
+ synchronized (BundleClassLoaders.class) {
+ if (bundleClassLoaders == null) {
+ throw new NotInitializedException("BundleClassLoaders not
initialized");
}
+ return bundleClassLoaders;
}
- return result;
}
--- End diff --
There's no longer a need for getInstance() to synchronize, if we deal with
bundleClassLoader atomically. (See also init() method comment below):
```java
public static BundleClassLoaders getInstance() throws
NotInitializedException {
BundleClassLoaders result = bundleClassLoaders;
if (result == null) {
throw new NotInitializedException("BundleClassLoaders not
initialized");
}
return result;
}
```
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
