This is an automated email from the ASF dual-hosted git repository. pkarwasz pushed a commit to branch release/2.25.4 in repository https://gitbox.apache.org/repos/asf/logging-log4j2.git
commit a2590b4c52ebb7a752c150284ea926fc6bea4a0f 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 ++++++++++++++++-- src/changelog/2.25.4/4060_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/2.25.4/4060_resource-loading.xml b/src/changelog/2.25.4/4060_resource-loading.xml new file mode 100644 index 0000000000..b858937041 --- /dev/null +++ b/src/changelog/2.25.4/4060_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="fixed"> + <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. + </description> +</entry>
