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* [SCM] master: Permit customized logging.
@ 2008-02-26 14:19 cagney
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From: cagney @ 2008-02-26 14:19 UTC (permalink / raw)
To: frysk-cvs
The branch, master has been updated
via 7174ba407d72d790645f20a5db9682dd142bd772 (commit)
from b1e43dbc905f9ab3aa3e20e6f4cd9645823d7367 (commit)
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not appeared on any other notification email.
- Log -----------------------------------------------------------------
commit 7174ba407d72d790645f20a5db9682dd142bd772
Author: Andrew Cagney <cagney@redhat.com>
Date: Tue Feb 26 09:18:46 2008 -0500
Permit customized logging.
frysk-sys/frysk/rsl/ChangeLog
2008-02-26 Andrew Cagney <cagney@redhat.com>
* package.html (Implementing a Custom Log): New.
* Log.java (prefix, print): Return Log. Make public.
-----------------------------------------------------------------------
Summary of changes:
frysk-sys/frysk/rsl/ChangeLog | 5 +
frysk-sys/frysk/rsl/Log.java | 156 +++++++++++++++++++------------------
frysk-sys/frysk/rsl/package.html | 13 +++
3 files changed, 98 insertions(+), 76 deletions(-)
First 500 lines of diff:
diff --git a/frysk-sys/frysk/rsl/ChangeLog b/frysk-sys/frysk/rsl/ChangeLog
index 73b33c2..5110360 100644
--- a/frysk-sys/frysk/rsl/ChangeLog
+++ b/frysk-sys/frysk/rsl/ChangeLog
@@ -1,3 +1,8 @@
+2008-02-26 Andrew Cagney <cagney@redhat.com>
+
+ * package.html (Implementing a Custom Log): New.
+ * Log.java (prefix, print): Return Log. Make public.
+
2008-02-20 Andrew Cagney <cagney@redhat.com>
* Log.java: Include the TID.PID in the log message.
diff --git a/frysk-sys/frysk/rsl/Log.java b/frysk-sys/frysk/rsl/Log.java
index 0a3e3eb..043b3ee 100644
--- a/frysk-sys/frysk/rsl/Log.java
+++ b/frysk-sys/frysk/rsl/Log.java
@@ -160,62 +160,34 @@ public final class Log {
out.print(' ');
}
- private void prefix() {
+ public Log prefix() {
prefixTimeAndPid();
out.print(path);
out.print(":");
+ return this;
}
- private void prefix(Object o) {
+ public Log prefix(Object o) {
prefixTimeAndPid();
out.print("[");
out.print(o.toString());
out.print("]:");
+ return this;
}
- private void suffix() {
+ public void suffix() {
out.println();
out.flush();
}
/**
- * Throwables get their message printed; along with any root
- * causes.
- */
- private void dump(Throwable t) {
- out.print("<<exception");
- Throwable cause = t;
- do {
- out.print(":");
- out.print(t.getMessage());
- cause = cause.getCause();
- } while (cause != null);
- out.print(">>");
- }
- private void dump(String s) {
- out.print("\"");
- out.print(s
- .replaceAll("\"", "\\\\\"")
- .replaceAll("\'", "\\\\\'")
- .replaceAll("\r", "\\\\r")
- .replaceAll("\n", "\\\\n")
- .replaceAll("\t", "\\\\t")
- .replaceAll("\f", "\\\\f"));
- out.print("\"");
- }
- /**
- * Dump the array object's i'th element
- * @param o the array object
- * @param i the array index
+ * Use poorly implemented reflection to dump Objects.
*/
- private void dump(Object o, int i) {
- // for moment assume the array contains Objects; dump recursively.
- dump(Array.get(o, i));
+ public Log print(Object o) {
+ out.print(' ');
+ dump(o);
+ return this;
}
- /**
- * Dump an arbitrary object.
- * @param o the object to dump
- */
private void dump(Object o) {
if (o == null) {
out.print("<<null>>");
@@ -246,19 +218,47 @@ public final class Log {
}
}
/**
- * Use poorly implemented reflection to dump Objects.
+ * Throwables get their message printed; along with any root
+ * causes.
*/
- private void print(Object o) {
- out.print(' ');
- dump(o);
+ private void dump(Throwable t) {
+ out.print("<<exception");
+ Throwable cause = t;
+ do {
+ out.print(":");
+ out.print(t.getMessage());
+ cause = cause.getCause();
+ } while (cause != null);
+ out.print(">>");
+ }
+ private void dump(String s) {
+ out.print("\"");
+ out.print(s
+ .replaceAll("\"", "\\\\\"")
+ .replaceAll("\'", "\\\\\'")
+ .replaceAll("\r", "\\\\r")
+ .replaceAll("\n", "\\\\n")
+ .replaceAll("\t", "\\\\t")
+ .replaceAll("\f", "\\\\f"));
+ out.print("\"");
+ }
+ /**
+ * Dump the array object's i'th element
+ * @param o the array object
+ * @param i the array index
+ */
+ private void dump(Object o, int i) {
+ // for moment assume the array contains Objects; dump recursively.
+ dump(Array.get(o, i));
}
/**
* Booleans are printed as strings.
*/
- private void print(boolean b) {
+ public Log print(boolean b) {
out.print(' ');
dump(b);
+ return this;
}
private void dump(boolean b) {
out.print(b);
@@ -276,9 +276,10 @@ public final class Log {
/**
* Chars are printed in quotes.
*/
- private void print(char c) {
+ public Log print(char c) {
out.print(' ');
dump(c);
+ return this;
}
private void dump(char c) {
out.print('\'');
@@ -298,9 +299,10 @@ public final class Log {
/**
* Integers are printed in decimal.
*/
- private void print(int i) {
+ public Log print(int i) {
out.print(' ');
dump(i);
+ return this;
}
private void dump(int i) {
out.print(i);
@@ -318,9 +320,10 @@ public final class Log {
/**
* Longs are printed in hex.
*/
- private void print(long l) {
+ public Log print(long l) {
out.print(' ');
dump(l);
+ return this;
}
private void dump(long l) {
out.print("0x");
@@ -340,9 +343,10 @@ public final class Log {
/**
* Strings are just copied.
*/
- private void print(String s) {
+ public Log print(String s) {
out.print(" ");
out.print(s);
+ return this;
}
/**
@@ -370,34 +374,34 @@ public final class Log {
public void log(String p1) {
if (!logging)
return;
- prefix(); print(p1); suffix();
+ prefix().print(p1).suffix();
}
// static 2 parameters
public void log(String p1, boolean p2) {
if (!logging)
return;
- prefix(); print(p1); print(p2); suffix();
+ prefix().print(p1).print(p2).suffix();
}
public void log(String p1, char p2) {
if (!logging)
return;
- prefix(); print(p1); print(p2); suffix();
+ prefix().print(p1).print(p2).suffix();
}
public void log(String p1, int p2) {
if (!logging)
return;
- prefix(); print(p1); print(p2); suffix();
+ prefix().print(p1).print(p2).suffix();
}
public void log(String p1, long p2) {
if (!logging)
return;
- prefix(); print(p1); print(p2); suffix();
+ prefix().print(p1).print(p2).suffix();
}
public void log(String p1, Object p2) {
if (!logging)
return;
- prefix(); print(p1); print(p2); suffix();
+ prefix().print(p1).print(p2).suffix();
}
public void log(String p1, String p2) {
// Needed to disambiguate log(String,String) which could be
@@ -409,41 +413,41 @@ public final class Log {
public void log(String p1, Object p2, String p3) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); suffix();
+ prefix().print(p1).print(p2).print(p3).suffix();
}
// static 4 parameters
public void log(String p1, int p2, String p3, Object p4) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix().print(p1).print(p2).print(p3).print(p4).suffix();
}
public void log(String p1, long p2, String p3, int p4) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix().print(p1).print(p2).print(p3).print(p4).suffix();
}
public void log(String p1, Object p2, String p3, long p4) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix().print(p1).print(p2).print(p3).print(p4).suffix();
}
public void log(String p1, Object p2, String p3, Object p4) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix().print(p1).print(p2).print(p3).print(p4).suffix();
}
// static 8 parameters
public void log(String p1, Object p2, String p3, Object p4, String p5, Object p6, String p7, Object p8) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); print(p7); print(p8); suffix();
+ prefix().print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).print(p7).print(p8).suffix();
}
public void log(String p1, int p2, String p3, Object p4, String p5, Object p6, String p7, Object p8) {
if (!logging)
return;
- prefix(); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); print(p7); print(p8); suffix();
+ prefix().print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).print(p7).print(p8).suffix();
}
// Non-static log methods; first parameter is the object.
@@ -452,96 +456,96 @@ public final class Log {
public void log(Object self, String p1) {
if (!logging)
return;
- prefix(self); print(p1); suffix();
+ prefix(self).print(p1).suffix();
}
// dynamic 2 parameters
public void log(Object self, String p1, int p2) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); suffix();
+ prefix(self).print(p1).print(p2).suffix();
}
public void log(Object self, String p1, long p2) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); suffix();
+ prefix(self).print(p1).print(p2).suffix();
}
public void log(Object self, String p1, Object p2) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); suffix();
+ prefix(self).print(p1).print(p2).suffix();
}
// dynamic 3 parameters
public void log(Object self, String p1, Object p2, String p3) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); suffix();
+ prefix(self).print(p1).print(p2).print(p3).suffix();
}
// dynamic 4 parameters
public void log(Object self, String p1, boolean p2, String p3, int p4) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).suffix();
}
public void log(Object self, String p1, int p2, String p3, char p4) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).suffix();
}
public void log(Object self, String p1, Object p2, String p3, Object p4) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).suffix();
}
public void log(Object self, String p1, Object p2, String p3, int p4) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).suffix();
}
// dynamic 5 parameters
public void log(Object self, String p1, Object p2, String p3, long p4, String p5) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).suffix();
}
// dynamic 6 parameters
public void log(Object self, String p1, Object p2, String p3, long p4, String p5, long p6) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).suffix();
}
public void log(Object self, String p1, Object p2, String p3, Object p4, String p5, int p6) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).suffix();
}
public void log(Object self, String p1, Object p2, String p3, Object p4, String p5, Object p6) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).suffix();
}
// dynamic 9 parameters
public void log(Object self, String p1, Object p2, String p3, long p4, String p5, int p6, String p7, int p8, String p9) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); print(p7); print(p8); print(p9); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).print(p7).print(p8).print(p9).suffix();
}
public void log(Object self, String p1, Object p2, String p3, long p4, String p5, long p6, String p7, int p8, String p9) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); print(p7); print(p8); print(p9); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).print(p7).print(p8).print(p9).suffix();
}
// dynamic 11 parameters
public void log(Object self, String p1, Object p2, String p3, long p4, String p5, Object p6, String p7, int p8, String p9, int p10, String p11) {
if (!logging)
return;
- prefix(self); print(p1); print(p2); print(p3); print(p4); print(p5); print(p6); print(p7); print(p8); print(p9); print(p10); print(p11); suffix();
+ prefix(self).print(p1).print(p2).print(p3).print(p4).print(p5).print(p6).print(p7).print(p8).print(p9).print(p10).print(p11).suffix();
}
diff --git a/frysk-sys/frysk/rsl/package.html b/frysk-sys/frysk/rsl/package.html
index dadf71b..a9e5327 100644
--- a/frysk-sys/frysk/rsl/package.html
+++ b/frysk-sys/frysk/rsl/package.html
@@ -91,6 +91,19 @@ For instance:
A completer is available for command-lines wanting to provide
tab-completion of the known set of loggers.
+<h2>Implementing a Custom Log</h2>
+
+Sometimes the data that needs to be printed is just too wierd a
+sequence to justify the addition of an additional log method. For
+those cases, a custom log sequence can be implemented vis:
+
+<pre>
+Log fine = ...;
+...
+if (fine.logging())
+ fine.prefix(this).print("why arg").print(arg).suffix();
+</pre>
+
<h2>Comparison with Existing Loggers</h2>
The following differences between this logger and <tt>log4j</tt>
hooks/post-receive
--
frysk system monitor/debugger
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