Fix #25756: option to control shutdown of proxies on logout

Author: LEDfan

src/main/java/eu/openanalytics/containerproxy/backend/strategy/impl/DefaultProxyLogoutStrategy.java

@@ -22,6 +22,7 @@
 
 import javax.inject.Inject;
 
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.stereotype.Component;
 
 import eu.openanalytics.containerproxy.backend.strategy.IProxyLogoutStrategy;
@@ -32,6 +33,7 @@
  * Default logout behaviour: stop all proxies owned by the user.
  */
 @Component
+@ConditionalOnProperty(name = "proxy.stop_proxies_on_logout", havingValue = "true", matchIfMissing = true)
 public class DefaultProxyLogoutStrategy implements IProxyLogoutStrategy {
 
 	@Inject

src/main/java/eu/openanalytics/containerproxy/backend/strategy/impl/NoOpProxyLogoutStrategy.java

@@ -0,0 +1,39 @@
+/**
+ * ContainerProxy
+ *
+ * Copyright (C) 2016-2021 Open Analytics
+ *
+ * ===========================================================================
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the Apache License as published by
+ * The Apache Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * Apache License for more details.
+ *
+ * You should have received a copy of the Apache License
+ * along with this program.  If not, see <http://www.apache.org/licenses/>
+ */
+package eu.openanalytics.containerproxy.backend.strategy.impl;
+
+import eu.openanalytics.containerproxy.backend.strategy.IProxyLogoutStrategy;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.stereotype.Component;
+
+/**
+ * No-op logout behaviour : do nothing on logout of user
+ */
+@Component
+@ConditionalOnProperty(name = "proxy.stop_proxies_on_logout", havingValue = "false")
+public class NoOpProxyLogoutStrategy implements IProxyLogoutStrategy {
+
+	@Override
+	public void onLogout(String userId) {
+
+	}
+
+}