AfflictionNetworks/samskivert
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Allow the setting of module-specific log levels via system properties.

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This is done like so:

% java -Dlog_level:module=debug ...


git-svn-id: https://samskivert.googlecode.com/svn/trunk@767 6335cc39-0255-0410-8fd6-9bcaacd3b74c
This commit is contained in:
mdb
2002-05-31 20:44:41 +00:00
parent 1c409ee735
commit c583d4a81d
1 changed files with 43 additions and 10 deletions
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projects/samskivert/src/java/com/samskivert/util/Log.java
+43 -10
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@@ -1,5 +1,5 @@
//
// $Id: Log.java,v 1.6 2002/04/09 05:13:28 mdb Exp $
// $Id: Log.java,v 1.7 2002/05/31 20:44:41 mdb Exp $
//
// samskivert library - useful routines for java programs
// Copyright (C) 2001 Michael Bayne
@@ -53,6 +53,25 @@ public final class Log
public Log (String moduleName)
{
_moduleName = moduleName;
// try setting our default log level for this package
try {
String lstr = System.getProperty("log_level:" + moduleName);
if (!StringUtil.blank(lstr)) {
int level = levelFromString(lstr);
if (level != -1) {
_provider.setLevel(moduleName, level);
} else {
_provider.log(WARNING, moduleName,
"Unknown log level requested " +
"[level=" + lstr + "].");
}
}
} catch (SecurityException se) {
// ignore security exceptions; we're just running in a JVM
// that won't let us read system properties
}
}
/**
@@ -127,6 +146,23 @@ public final class Log
_provider = provider;
}
/**
* Returns the log level that matches the specified string or -1 if
* the string could not be interpretted as a log level.
*/
public static int levelFromString (String level)
{
if (level.equalsIgnoreCase("debug")) {
return DEBUG;
} else if (level.equalsIgnoreCase("info")) {
return INFO;
} else if (level.equalsIgnoreCase("warning")) {
return WARNING;
} else {
return -1;
}
}
/**
* Checks the <code>log_provider</code> system property to see if a
* log provider has been specified. Installs it if so. Checks the
@@ -156,18 +192,15 @@ public final class Log
// now set our log level
try {
String level = System.getProperty("log_level");
if (level != null) {
if (level.equalsIgnoreCase("debug")) {
_provider.setLevel(DEBUG);
} else if (level.equalsIgnoreCase("info")) {
_provider.setLevel(INFO);
} else if (level.equalsIgnoreCase("warning")) {
_provider.setLevel(WARNING);
String lstr = System.getProperty("log_level");
if (!StringUtil.blank(lstr)) {
int level = levelFromString(lstr);
if (level != -1) {
_provider.setLevel(level);
} else {
_provider.log(WARNING, "samskivert",
"Unknown log level requested " +
"[level=" + level + "].");
"[level=" + lstr + "].");
}
}