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vy pushed a commit to branch 2.x
in repository https://gitbox.apache.org/repos/asf/logging-log4j2.git
The following commit(s) were added to refs/heads/2.x by this push:
new c5396fc4d5 Add debug logs for successful resource loading in `Loader`
(#4060)
c5396fc4d5 is described below
commit c5396fc4d5983be852f73c238890d41fe348c360
Author: LBS <[email protected]>
AuthorDate: Mon Mar 16 23:43:28 2026 +0800
Add debug logs for successful resource loading in `Loader` (#4060)
Co-authored-by: Volkan Yazıcı <[email protected]>
---
.../org/apache/logging/log4j/core/util/Loader.java | 18 ++++++++++++++++--
.../add_debug_logs_for_successful_resource_loading.xml | 13 +++++++++++++
2 files changed, 29 insertions(+), 2 deletions(-)
diff --git
a/log4j-core/src/main/java/org/apache/logging/log4j/core/util/Loader.java
b/log4j-core/src/main/java/org/apache/logging/log4j/core/util/Loader.java
index 4ae5d46335..98663a9ea2 100644
--- a/log4j-core/src/main/java/org/apache/logging/log4j/core/util/Loader.java
+++ b/log4j-core/src/main/java/org/apache/logging/log4j/core/util/Loader.java
@@ -94,6 +94,7 @@ public final class Loader {
LOGGER.trace("Trying to find [{}] using context class loader
{}.", resource, classLoader);
final URL url = classLoader.getResource(resource);
if (url != null) {
+ LOGGER.debug("Found [{}] at {} using context class
loader.", resource, url);
return url;
}
}
@@ -104,6 +105,7 @@ public final class Loader {
LOGGER.trace("Trying to find [{}] using {} class loader.",
resource, classLoader);
final URL url = classLoader.getResource(resource);
if (url != null) {
+ LOGGER.debug("Found [{}] at {} using {} class loader.",
resource, url, classLoader);
return url;
}
}
@@ -112,6 +114,7 @@ public final class Loader {
LOGGER.trace("Trying to find [{}] using {} class loader.",
resource, defaultLoader);
final URL url = defaultLoader.getResource(resource);
if (url != null) {
+ LOGGER.debug("Found [{}] at {} using {} class loader.",
resource, url, defaultLoader);
return url;
}
}
@@ -127,7 +130,11 @@ public final class Loader {
// loader which the parent of the system class loader. Hence the
// code below.
LOGGER.trace("Trying to find [{}] using
ClassLoader.getSystemResource().", resource);
- return ClassLoader.getSystemResource(resource);
+ final URL url = ClassLoader.getSystemResource(resource);
+ if (url != null) {
+ LOGGER.debug("Found [{}] at {} using system class loader.",
resource, url);
+ }
+ return url;
}
/**
@@ -157,6 +164,7 @@ public final class Loader {
LOGGER.trace("Trying to find [{}] using context class loader
{}.", resource, classLoader);
is = classLoader.getResourceAsStream(resource);
if (is != null) {
+ LOGGER.debug("Found [{}] using context class loader {}.",
resource, classLoader);
return is;
}
}
@@ -167,6 +175,7 @@ public final class Loader {
LOGGER.trace("Trying to find [{}] using {} class loader.",
resource, classLoader);
is = classLoader.getResourceAsStream(resource);
if (is != null) {
+ LOGGER.debug("Found [{}] using {} class loader.",
resource, classLoader);
return is;
}
}
@@ -176,6 +185,7 @@ public final class Loader {
LOGGER.trace("Trying to find [{}] using {} class loader.",
resource, defaultLoader);
is = defaultLoader.getResourceAsStream(resource);
if (is != null) {
+ LOGGER.debug("Found [{}] using {} class loader.",
resource, defaultLoader);
return is;
}
}
@@ -191,7 +201,11 @@ public final class Loader {
// loader which the parent of the system class loader. Hence the
// code below.
LOGGER.trace("Trying to find [{}] using
ClassLoader.getSystemResource().", resource);
- return ClassLoader.getSystemResourceAsStream(resource);
+ final InputStream is = ClassLoader.getSystemResourceAsStream(resource);
+ if (is != null) {
+ LOGGER.debug("Found [{}] using system class loader.", resource);
+ }
+ return is;
}
/**
diff --git
a/src/changelog/.2.x.x/add_debug_logs_for_successful_resource_loading.xml
b/src/changelog/.2.x.x/add_debug_logs_for_successful_resource_loading.xml
new file mode 100644
index 0000000000..445100bf51
--- /dev/null
+++ b/src/changelog/.2.x.x/add_debug_logs_for_successful_resource_loading.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns="https://logging.apache.org/xml/ns";
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+ xsi:schemaLocation="
+ https://logging.apache.org/xml/ns
+ https://logging.apache.org/xml/ns/log4j-changelog-0.xsd";
+ type="added">
+ <issue id="4058"
link="https://github.com/apache/logging-log4j2/issues/4058"/>
+ <issue id="4060"
link="https://github.com/apache/logging-log4j2/pull/4060"/>
+ <description format="asciidoc">
+ Added debug level logs for successful resource loading in `Loader`
class to show where resources are found
+ </description>
+</entry>
