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Posted to dev@tomcat.apache.org by mi...@apache.org on 2021/11/09 10:20:21 UTC

[tomcat] branch main updated: Log warning if a listener is incorrectly placed

This is an automated email from the ASF dual-hosted git repository.

michaelo pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/main by this push:
     new 322a9ab  Log warning if a listener is incorrectly placed
322a9ab is described below

commit 322a9aba6f891f0e11e2aea8fb99894b595e07a0
Author: Michael Osipov <mi...@apache.org>
AuthorDate: Mon Nov 8 20:39:09 2021 +0100

    Log warning if a listener is incorrectly placed
    
    Some listeners are intented to be nested inside a Server element only.
    If a listener is misplaced a warning message is logged.
---
 java/org/apache/catalina/core/AprLifecycleListener.java           | 4 ++++
 .../org/apache/catalina/core/JreMemoryLeakPreventionListener.java | 4 ++++
 java/org/apache/catalina/core/LocalStrings.properties             | 2 ++
 .../apache/catalina/mbeans/GlobalResourcesLifecycleListener.java  | 4 ++++
 java/org/apache/catalina/mbeans/LocalStrings.properties           | 2 ++
 java/org/apache/catalina/security/LocalStrings.properties         | 2 ++
 java/org/apache/catalina/security/SecurityListener.java           | 4 ++++
 java/org/apache/catalina/startup/LocalStrings.properties          | 1 +
 java/org/apache/catalina/startup/VersionLoggerListener.java       | 4 ++++
 java/org/apache/catalina/storeconfig/LocalStrings.properties      | 2 +-
 .../apache/catalina/storeconfig/StoreConfigLifecycleListener.java | 8 +++++---
 webapps/docs/changelog.xml                                        | 8 ++++++++
 12 files changed, 41 insertions(+), 4 deletions(-)

diff --git a/java/org/apache/catalina/core/AprLifecycleListener.java b/java/org/apache/catalina/core/AprLifecycleListener.java
index d92ac14..285abf9 100644
--- a/java/org/apache/catalina/core/AprLifecycleListener.java
+++ b/java/org/apache/catalina/core/AprLifecycleListener.java
@@ -121,6 +121,10 @@ public class AprLifecycleListener implements LifecycleListener {
 
         if (Lifecycle.BEFORE_INIT_EVENT.equals(event.getType())) {
             synchronized (lock) {
+                if (!(event.getLifecycle() instanceof Server)) {
+                    log.warn(sm.getString("listener.notServer",
+                            event.getLifecycle().getClass().getSimpleName()));
+                }
                 init();
                 for (String msg : initInfoLogMessages) {
                     log.info(msg);
diff --git a/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java b/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
index 47c5624..4206ff7 100644
--- a/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
+++ b/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java
@@ -107,6 +107,10 @@ public class JreMemoryLeakPreventionListener implements LifecycleListener {
     public void lifecycleEvent(LifecycleEvent event) {
         // Initialise these classes when Tomcat starts
         if (Lifecycle.BEFORE_INIT_EVENT.equals(event.getType())) {
+            if (!(event.getLifecycle() instanceof Server)) {
+                log.warn(sm.getString("listener.notServer",
+                        event.getLifecycle().getClass().getSimpleName()));
+            }
 
             /*
              * First call to this loads all drivers visible to the current class
diff --git a/java/org/apache/catalina/core/LocalStrings.properties b/java/org/apache/catalina/core/LocalStrings.properties
index 345d197..80dbc79 100644
--- a/java/org/apache/catalina/core/LocalStrings.properties
+++ b/java/org/apache/catalina/core/LocalStrings.properties
@@ -142,6 +142,8 @@ jniLifecycleListener.missingPathOrName=One of libraryName or libraryPath must be
 
 jreLeakListener.classToInitializeFail=Failed to load class [{0}] during Tomcat start to prevent possible memory leaks.
 
+listener.notServer=This listener must only be nested within Server elements, but is in [{0}].
+
 naming.addEnvEntry=Adding environment entry [{0}]
 naming.addResourceEnvRef=Adding resource env ref [{0}]
 naming.bindFailed=Failed to bind object: [{0}]
diff --git a/java/org/apache/catalina/mbeans/GlobalResourcesLifecycleListener.java b/java/org/apache/catalina/mbeans/GlobalResourcesLifecycleListener.java
index d6d7506..4f2f2dc 100644
--- a/java/org/apache/catalina/mbeans/GlobalResourcesLifecycleListener.java
+++ b/java/org/apache/catalina/mbeans/GlobalResourcesLifecycleListener.java
@@ -74,6 +74,10 @@ public class GlobalResourcesLifecycleListener implements LifecycleListener {
     public void lifecycleEvent(LifecycleEvent event) {
 
         if (Lifecycle.START_EVENT.equals(event.getType())) {
+            if (!(event.getLifecycle() instanceof Server)) {
+                log.warn(sm.getString("listener.notServer",
+                        event.getLifecycle().getClass().getSimpleName()));
+            }
             component = event.getLifecycle();
             createMBeans();
         } else if (Lifecycle.STOP_EVENT.equals(event.getType())) {
diff --git a/java/org/apache/catalina/mbeans/LocalStrings.properties b/java/org/apache/catalina/mbeans/LocalStrings.properties
index 7c4343d..70a62b9 100644
--- a/java/org/apache/catalina/mbeans/LocalStrings.properties
+++ b/java/org/apache/catalina/mbeans/LocalStrings.properties
@@ -23,6 +23,8 @@ globalResources.createError.userDatabase.user=Cannot create User MBean for user
 globalResources.noNamingContext=No global naming context defined for server
 globalResources.userDatabaseCreateError=Exception creating UserDatabase MBeans for [{0}]
 
+listener.notServer=This listener must only be nested within Server elements, but is in [{0}].
+
 mBean.attributeNotFound=Cannot find attribute [{0}]
 mBean.nullAttribute=Attribute is null
 mBean.nullName=Attribute name is null
diff --git a/java/org/apache/catalina/security/LocalStrings.properties b/java/org/apache/catalina/security/LocalStrings.properties
index b97a018..1c604fd 100644
--- a/java/org/apache/catalina/security/LocalStrings.properties
+++ b/java/org/apache/catalina/security/LocalStrings.properties
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+listener.notServer=This listener must only be nested within Server elements, but is in [{0}].
+
 SecurityListener.checkUmaskFail=Start attempted with umask setting of [{0}]. Running Tomcat without a umask at least as restrictive as [{1}] has been blocked by the Lifecycle listener org.apache.catalina.security.SecurityListener (usually configured in CATALINA_BASE/conf/server.xml)
 SecurityListener.checkUmaskNone=No umask setting was found in system property [{0}]. However, it appears Tomcat is running on a platform that supports umask. The system property is typically set in CATALINA_HOME/bin/catalina.sh. The Lifecycle listener org.apache.catalina.security.SecurityListener (usually configured in CATALINA_BASE/conf/server.xml) expects a umask at least as restrictive as [{1}]
 SecurityListener.checkUmaskParseFail=Failed to parse value [{0}] as a valid umask.
diff --git a/java/org/apache/catalina/security/SecurityListener.java b/java/org/apache/catalina/security/SecurityListener.java
index cee5ae0..6df8412 100644
--- a/java/org/apache/catalina/security/SecurityListener.java
+++ b/java/org/apache/catalina/security/SecurityListener.java
@@ -65,6 +65,10 @@ public class SecurityListener implements LifecycleListener {
     public void lifecycleEvent(LifecycleEvent event) {
         // This is the earliest event in Lifecycle
         if (event.getType().equals(Lifecycle.BEFORE_INIT_EVENT)) {
+            if (!(event.getLifecycle() instanceof Server)) {
+                log.warn(sm.getString("listener.notServer",
+                        event.getLifecycle().getClass().getSimpleName()));
+            }
             doChecks();
         }
     }
diff --git a/java/org/apache/catalina/startup/LocalStrings.properties b/java/org/apache/catalina/startup/LocalStrings.properties
index b8d0aff..facc17c 100644
--- a/java/org/apache/catalina/startup/LocalStrings.properties
+++ b/java/org/apache/catalina/startup/LocalStrings.properties
@@ -146,6 +146,7 @@ hostConfig.undeploy=Undeploying context [{0}]
 hostConfig.undeployVersion=Undeploying old version of context [{0}] which has no active session
 
 listener.createFailed=Optional listener [{0}] is not enabled
+listener.notServer=This listener must only be nested within Server elements, but is in [{0}].
 
 passwdUserDatabase.readFail=Failed to obtain a complete set of users from /etc/passwd
 
diff --git a/java/org/apache/catalina/startup/VersionLoggerListener.java b/java/org/apache/catalina/startup/VersionLoggerListener.java
index 6ca2ea8..472cd46 100644
--- a/java/org/apache/catalina/startup/VersionLoggerListener.java
+++ b/java/org/apache/catalina/startup/VersionLoggerListener.java
@@ -84,6 +84,10 @@ public class VersionLoggerListener implements LifecycleListener {
     @Override
     public void lifecycleEvent(LifecycleEvent event) {
         if (Lifecycle.BEFORE_INIT_EVENT.equals(event.getType())) {
+            if (!(event.getLifecycle() instanceof Server)) {
+                log.warn(sm.getString("listener.notServer",
+                        event.getLifecycle().getClass().getSimpleName()));
+            }
             log();
         }
     }
diff --git a/java/org/apache/catalina/storeconfig/LocalStrings.properties b/java/org/apache/catalina/storeconfig/LocalStrings.properties
index fdf160c..4067b86 100644
--- a/java/org/apache/catalina/storeconfig/LocalStrings.properties
+++ b/java/org/apache/catalina/storeconfig/LocalStrings.properties
@@ -34,7 +34,7 @@ standardContextSF.storeContext=Store context [{0}] configuration separately at p
 standardContextSF.storeContextWithBackup=Store context [{0}] configuration separately with backup at path [{1}]
 
 storeConfigListener.loadError=Error loading StoreConfig
-storeConfigListener.notServer=The listener was added to component other than the Server and will therefore be ignored
+storeConfigListener.notServer=This listener must only be nested within Server elements, but is in [{0}], ignoring it.
 storeConfigListener.registerError=Error registering StoreConfig MBean
 
 storeFactory.noDescriptor=Descriptor for element [{0}].[{1}] not configured
diff --git a/java/org/apache/catalina/storeconfig/StoreConfigLifecycleListener.java b/java/org/apache/catalina/storeconfig/StoreConfigLifecycleListener.java
index a3c7e6d..a55c8c9 100644
--- a/java/org/apache/catalina/storeconfig/StoreConfigLifecycleListener.java
+++ b/java/org/apache/catalina/storeconfig/StoreConfigLifecycleListener.java
@@ -32,8 +32,9 @@ import org.apache.tomcat.util.res.StringManager;
 
 /**
  * Loads and registers a StoreConfig MBean with the name
- * <i>Catalina:type=StoreConfig</i>. This listener should only be used with a
- * {@link Server}.
+ * <i>Catalina:type=StoreConfig</i>.
+ * <p>
+ * This listener must only be nested within {@link Server} elements.
  */
 public class StoreConfigLifecycleListener implements LifecycleListener {
 
@@ -64,7 +65,8 @@ public class StoreConfigLifecycleListener implements LifecycleListener {
             if (event.getSource() instanceof Server) {
                 createMBean((Server) event.getSource());
             } else {
-                log.warn(sm.getString("storeConfigListener.notServer"));
+                log.warn(sm.getString("storeConfigListener.notServer",
+                        event.getLifecycle().getClass().getSimpleName()));
             }
         } else if (Lifecycle.AFTER_STOP_EVENT.equals(event.getType())) {
             if (oname != null) {
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 5576ac4..fa65b2a 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -105,6 +105,14 @@
   issues do not "pop up" wrt. others).
 -->
 <section name="Tomcat 10.1.0-M8 (markt)" rtext="in development">
+  <subsection name="Catalina">
+    <changelog>
+      <update>
+        Log warning if a listener is not nested inside a Server element
+        although it must have been. (michaelo)
+      </update>
+    </changelog>
+  </subsection>
 </section>
 <section name="Tomcat 10.1.0-M7 (markt)" rtext="release in progress">
   <subsection name="Catalina">

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