fix: Convert custom loglevels in Log4j 2.x agent

[lttng-ust.git] / src / lib / lttng-ust-java-agent / jni / log4j / lttng_ust_log4j2.c

diff --git a/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j2.c b/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j2.c
index e89602f6a58685e4cf2c3ef33a1244c95f5da699..f01139ad473cd3c148d87cf67d98d1816612bef7 100644 (file)
--- a/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j2.c
+++ b/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j2.c
@@ -40,12 +40,34 @@ enum loglevel_log4j2 {
         LOGLEVEL_LOG4J2_ALL              = INT32_MAX,
 };
 
+/*
+ * Convert a custom Log4j 2.x loglevel to its equivalent 1.x standard loglevel.
+ */
+static jint loglevel_custom_2x_to_standard_1x(jint loglevel)
+{
+       if (loglevel <= LOGLEVEL_LOG4J2_OFF) {
+               return LOGLEVEL_LOG4J1_OFF;
+       } else if (loglevel <= LOGLEVEL_LOG4J2_FATAL) {
+               return LOGLEVEL_LOG4J1_FATAL;
+       } else if (loglevel <= LOGLEVEL_LOG4J2_ERROR) {
+               return LOGLEVEL_LOG4J1_ERROR;
+       } else if (loglevel <= LOGLEVEL_LOG4J2_WARN) {
+               return LOGLEVEL_LOG4J1_WARN;
+       } else if (loglevel <= LOGLEVEL_LOG4J2_INFO) {
+               return LOGLEVEL_LOG4J1_INFO;
+       } else if (loglevel <= LOGLEVEL_LOG4J2_DEBUG) {
+               return LOGLEVEL_LOG4J1_DEBUG;
+       } else if (loglevel <= LOGLEVEL_LOG4J2_TRACE) {
+               return LOGLEVEL_LOG4J1_TRACE;
+       } else {
+               return LOGLEVEL_LOG4J1_ALL;
+       }
+}
+
 /*
  * The integer values of the loglevels has obviously changed in log4j2,
  * translate them to the values of log4j1 since they are exposed in the API of
  * lttng-tools.
- *
- * Custom loglevels might pose a problem when using ranges.
  */
 static jint loglevel_2x_to_1x(jint loglevel)
 {
@@ -68,7 +90,7 @@ static jint loglevel_2x_to_1x(jint loglevel)
                return LOGLEVEL_LOG4J1_ALL;
        default:
                /* Handle custom loglevels. */
-               return loglevel;
+               return loglevel_custom_2x_to_standard_1x(loglevel);
        }
 }