Refactor magic strings.
diff --git a/log4j-core/src/main/java/org/apache/logging/log4j/core/lookup/Interpolator.java b/log4j-core/src/main/java/org/apache/logging/log4j/core/lookup/Interpolator.java
index ba68573..b480fa0 100644
--- a/log4j-core/src/main/java/org/apache/logging/log4j/core/lookup/Interpolator.java
+++ b/log4j-core/src/main/java/org/apache/logging/log4j/core/lookup/Interpolator.java
@@ -34,6 +34,12 @@
*/
public class Interpolator extends AbstractConfigurationAwareLookup {
+ private static final String LOOKUP_KEY_WEB = "web";
+
+ private static final String LOOKUP_KEY_JNDI = "jndi";
+
+ private static final String LOOKUP_KEY_JVMRUNARGS = "jvmrunargs";
+
private static final Logger LOGGER = StatusLogger.getLogger();
/** Constant for the prefix separator. */
@@ -92,28 +98,28 @@
// JNDI
try {
// [LOG4J2-703] We might be on Android
- lookups.put("jndi",
+ lookups.put(LOOKUP_KEY_JNDI,
Loader.newCheckedInstanceOf("org.apache.logging.log4j.core.lookup.JndiLookup", StrLookup.class));
} catch (final Throwable t) {
- handleError("jndi", t);
+ handleError(LOOKUP_KEY_JNDI, t);
}
// JMX input args
try {
// We might be on Android
- lookups.put("jvmrunargs",
+ lookups.put(LOOKUP_KEY_JVMRUNARGS,
Loader.newCheckedInstanceOf("org.apache.logging.log4j.core.lookup.JmxRuntimeInputArgumentsLookup",
StrLookup.class));
} catch (final Throwable t) {
- handleError("jvmrunargs", t);
+ handleError(LOOKUP_KEY_JVMRUNARGS, t);
}
lookups.put("date", new DateLookup());
lookups.put("ctx", new ContextMapLookup());
if (Loader.isClassAvailable("javax.servlet.ServletContext")) {
try {
- lookups.put("web",
+ lookups.put(LOOKUP_KEY_WEB,
Loader.newCheckedInstanceOf("org.apache.logging.log4j.web.WebLookup", StrLookup.class));
} catch (final Exception ignored) {
- handleError("web", ignored);
+ handleError(LOOKUP_KEY_WEB, ignored);
}
} else {
LOGGER.debug("Not in a ServletContext environment, thus not loading WebLookup plugin.");
@@ -122,19 +128,19 @@
private void handleError(final String lookupKey, final Throwable t) {
switch (lookupKey) {
- case "jndi":
+ case LOOKUP_KEY_JNDI:
// java.lang.VerifyError: org/apache/logging/log4j/core/lookup/JndiLookup
LOGGER.warn( // LOG4J2-1582 don't print the whole stack trace (it is just a warning...)
"JNDI lookup class is not available because this JRE does not support JNDI." +
" JNDI string lookups will not be available, continuing configuration. Ignoring " + t);
break;
- case "jvmrunargs":
+ case LOOKUP_KEY_JVMRUNARGS:
// java.lang.VerifyError: org/apache/logging/log4j/core/lookup/JmxRuntimeInputArgumentsLookup
LOGGER.warn(
"JMX runtime input lookup class is not available because this JRE does not support JMX. " +
"JMX lookups will not be available, continuing configuration. Ignoring " + t);
break;
- case "web":
+ case LOOKUP_KEY_WEB:
LOGGER.info("Log4j appears to be running in a Servlet environment, but there's no log4j-web module " +
"available. If you want better web container support, please add the log4j-web JAR to your " +
"web archive or server lib directory.");
