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Posted to commits@dubbo.apache.org by al...@apache.org on 2021/04/21 12:22:55 UTC
[dubbo] branch master updated: Use double-check to get elements
from the cache (#7583)
This is an automated email from the ASF dual-hosted git repository.
albumenj pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/dubbo.git
The following commit(s) were added to refs/heads/master by this push:
new 7677eb3 Use double-check to get elements from the cache (#7583)
7677eb3 is described below
commit 7677eb3f8683517b6d31776c5042792b273335be
Author: 灼华 <43...@users.noreply.github.com>
AuthorDate: Wed Apr 21 20:22:15 2021 +0800
Use double-check to get elements from the cache (#7583)
---
.../metadata/report/support/AbstractMetadataReportFactory.java | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/report/support/AbstractMetadataReportFactory.java b/dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/report/support/AbstractMetadataReportFactory.java
index 9776e8c..f2867d7 100644
--- a/dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/report/support/AbstractMetadataReportFactory.java
+++ b/dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/report/support/AbstractMetadataReportFactory.java
@@ -39,10 +39,16 @@ public abstract class AbstractMetadataReportFactory implements MetadataReportFac
url = url.setPath(MetadataReport.class.getName())
.removeParameters(EXPORT_KEY, REFER_KEY);
String key = url.toServiceString();
+
+ MetadataReport metadataReport = SERVICE_STORE_MAP.get(key);
+ if (metadataReport != null) {
+ return metadataReport;
+ }
+
// Lock the metadata access process to ensure a single instance of the metadata instance
LOCK.lock();
try {
- MetadataReport metadataReport = SERVICE_STORE_MAP.get(key);
+ metadataReport = SERVICE_STORE_MAP.get(key);
if (metadataReport != null) {
return metadataReport;
}