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https://issues.apache.org/jira/browse/KNOX-2200?focusedWorklogId=377795&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-377795
]
ASF GitHub Bot logged work on KNOX-2200:
----------------------------------------
Author: ASF GitHub Bot
Created on: 27/Jan/20 18:32
Start Date: 27/Jan/20 18:32
Worklog Time Spent: 10m
Work Description: risdenk commented on pull request #243: KNOX-2200 -
DefaultKeystoreService can lose entries under concurrent access
URL: https://github.com/apache/knox/pull/243#discussion_r371409049
##########
File path:
gateway-server/src/main/java/org/apache/knox/gateway/services/security/impl/DefaultKeystoreService.java
##########
@@ -286,18 +287,21 @@ public KeyStore getCredentialStoreForCluster(String
clusterName)
@Override
public void addCredentialForCluster(String clusterName, String alias, String
value)
throws KeystoreServiceException {
- removeFromCache(clusterName, alias);
- KeyStore ks = getCredentialStoreForCluster(clusterName);
- if (ks != null) {
- try {
- final Key key = new
SecretKeySpec(value.getBytes(StandardCharsets.UTF_8), "AES");
- ks.setKeyEntry(alias, key, masterService.getMasterSecret(), null);
-
- final Path keyStoreFilePath = keyStoreDirPath.resolve(clusterName +
CREDENTIALS_SUFFIX);
- writeKeyStoreToFile(ks, keyStoreFilePath,
masterService.getMasterSecret());
- addToCache(clusterName, alias, value);
- } catch (KeyStoreException | IOException | CertificateException |
NoSuchAlgorithmException e) {
- LOG.failedToAddCredentialForCluster(clusterName, e);
+ // Needed to prevent read then write synchronization issue where alias is
not added
+ synchronized (this) {
Review comment:
Changes the method signature. There isn't necessarily a need to synchronize
the public method. This only comes up because we read the keystore then write
to it. Other implementations can just add (ie: if this was a map we could
update in place)
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Issue Time Tracking
-------------------
Worklog Id: (was: 377795)
Time Spent: 40m (was: 0.5h)
> DefaultKeystoreService can lose entries under concurrent access
> ---------------------------------------------------------------
>
> Key: KNOX-2200
> URL: https://issues.apache.org/jira/browse/KNOX-2200
> Project: Apache Knox
> Issue Type: Bug
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Priority: Major
> Fix For: 1.4.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> DefaultKeystoreService can lose entires under concurrent access due to read
> then write synchronization issues. There are cases where the keystore is
> read, modified and then written back. This is not synchronized or handled
> with a lock.
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