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GH-3620: Fix Shared SFTP Session

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Resolves https://github.com/spring-projects/spring-integration/issues/3620

Shared session field was captured outside of the lock, causing multiple sessions
in a multi-threaded environment.

**cherry-pick to 5.4.x, 5.3.x**
This commit is contained in:
Gary Russell
2021-08-26 11:47:13 -04:00
committed by Artem Bilan
parent e37cdcd9e3
commit 43cb48443f
1 changed files with 2 additions and 2 deletions
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4
spring-integration-sftp/src/main/java/org/springframework/integration/sftp/session/DefaultSftpSessionFactory.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2020 the original author or authors.
* Copyright 2002-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -382,11 +382,11 @@ public class DefaultSftpSessionFactory implements SessionFactory<LsEntry>, Share
@Override
public SftpSession getSession() {
JSchSessionWrapper jschSession = this.sharedJschSession;
SftpSession sftpSession;
if (this.sharedSessionLock != null) {
this.sharedSessionLock.lock();
}
JSchSessionWrapper jschSession = this.sharedJschSession;
try {
boolean freshJschSession = false;
if (jschSession == null || !jschSession.isConnected()) {