AE with java

Question

Our shop has a lot of apps written in java and ruby, and I'm trying to integrate with these apps to perform standard operations without rewriting a ton of code. One problem I have with java is that stdout or console does not show up from our PS environments. I have tried using java object method calls or using log4j as found in Jim's blog. I just can't get anything that the java application outputs to stdout or to console to show up in the view log / trace. Any suggestions?

Answer 1

Thanks!! to Jim,
This is what I use
class MY_BATCH_LOG
method MY_BATCH_LOG();
method println_to_stdout(&message As string);
method println_to_stderr(&message As string);
rem This method may be used at the discretion of the User;
method redirect_stdout(&fileName As string);
rem Use the Redirect for stderr as PS by default creates an stdout for each process;
method redirect_stderr(&fileName As string);
end-class;
* The Constructor takes no arguments
method MY_BATCH_LOG
end-method;
* The println_to_stdout method is used to Print a line of text to Stdout.
* @param                     &message - Text to be written to Stdout.
method println_to_stdout
/+ &message as String +/
try
Local string &sMethodName = "MY_BATCH_LOG:println_to_stdout";
Local JavaObject &jSystem = GetJavaClass("java.lang.System");
Local JavaObject &jOutStream = &jSystem.out;
Local JavaObject &jCls = GetJavaClass("java.lang.Class");
Local JavaObject &jStringClass = &jCls.forName("java.lang.String");
Local JavaObject &jPrintStreamCls = &jOutStream.getClass();
Local JavaObject &jPrintlnArgTypes = CreateJavaObject("java.lang.Class[]", &jStringClass);
Local JavaObject &jPrintlnMethod = &jPrintStreamCls.getDeclaredMethod("println", &jPrintlnArgTypes);
&jPrintlnMethod.invoke(&jOutStream, CreateJavaObject("java.lang.Object[]", &message));
rem ** I didn't find flushing necessary, but here is where you would flush the buffer if desired;
rem &jOutStream.flush();
catch Exception &ex
&ex.Output();
Error (MsgGetText(18130, 15001, "Unhandled exception occurred in %1.", &sMethodName));
end-try;
end-method;
* The println_to_stderr method is used to Print a line of text to Stderr.
* This method should be used with a combination of redirect_stderr as PS
* maintains a single Stderr file for all processes.
* @param                     &message - Text to be written to Stdout.
method println_to_stderr
/+ &message as String +/
try
Local string &sMethodName = "MY_BATCH_LOG:println_to_stderr";
Local JavaObject &jSystem = GetJavaClass("java.lang.System");
Local JavaObject &jOutStream = &jSystem.err;
Local JavaObject &jCls = GetJavaClass("java.lang.Class");
Local JavaObject &jStringClass = &jCls.forName("java.lang.String");
Local JavaObject &jPrintStreamCls = &jOutStream.getClass();
Local JavaObject &jPrintlnArgTypes = CreateJavaObject("java.lang.Class[]", &jStringClass);
Local JavaObject &jPrintlnMethod = &jPrintStreamCls.getDeclaredMethod("println", &jPrintlnArgTypes);
&jPrintlnMethod.invoke(&jOutStream, CreateJavaObject("java.lang.Object[]", &message));
rem ** I didn't find flushing necessary, but here is where you would flush the buffer if desired;
rem &jOutStream.flush();
catch Exception &ex
&ex.Output();
Error (MsgGetText(18130, 15001, "Unhandled exception occurred in %1.", &sMethodName));
end-try;
end-method;
* The redirect_stdout method is used to redirect a line of text to a Custom file (Not a PS File Object) for general message logs.
* Use the this method prior to calling the println_to_stdout method.
* @param                     &fileName - File name of Redirected File.
method redirect_stdout
/+ &fileName as String +/
try
Local string &sMethodName = "MY_BATCH_LOG:redirect_stdout";
Local JavaObject &jSystem = GetJavaClass("java.lang.System");
Local JavaObject &jfos_out = CreateJavaObject("java.io.FileOutputStream", &fileName, True);
Local JavaObject &jps_out = CreateJavaObject("java.io.PrintStream", &jfos_out, True);
&jSystem.setOut(&jps_out);
catch Exception &ex
&ex.Output();
Error (MsgGetText(18130, 15001, "Unhandled exception occurred in %1.", &sMethodName));
end-try;
end-method;
* The redirect_stderr method is used to redirect a line of text to a Custom file (Not a PS File Object) for error logging.
* Use the this method prior to calling the println_to_stderr method.
* @param                     &fileName - File name of Redirected File.
method redirect_stderr
/+ &fileName as String +/
try
Local string &sMethodName = "MY_BATCH_LOG:redirect_stderr";
Local JavaObject &jSystem = GetJavaClass("java.lang.System");
Local JavaObject &jfos_out = CreateJavaObject("java.io.FileOutputStream", &fileName, True);
Local JavaObject &jps_out = CreateJavaObject("java.io.PrintStream", &jfos_out, True);
&jSystem.setErr(&jps_out);
catch Exception &ex
&ex.Output();
Error (MsgGetText(18130, 15001, "Unhandled exception occurred in %1.", &sMethodName));
end-try;
end-method;
and to use this I use the following code. *** Always safe to redirect both stdout and stderr as PS does not support all extensions***
import MY_BATCH_LOG:*;
Local MY_BATCH_LOG:MY_BATCH_LOG &msgLog_ = create MY_BATCH_LOG:MY_BATCH_LOG();
SQLExec("SELECT PRCSOUTPUTDIR FROM PSPRCSPARMS WHERE PRCSINSTANCE = :1", &PrcsInstance_, &FileDir_);
&ANZErrSub_ = "AE_BAL_FTP_" | &PrcsInstance_ | ".txt";
/* Determine the file path separator character. First check for backslash then forwardslash. */
&iTempPos = Find("\", &FileDir_);
If &iTempPos = 0 Then
&iTempPos = Find("/", &FileDir_);
&strSlash = "/";
Else
&strSlash = "\";
End-If;
&ErrFile_ = &FileDir_ | &strSlash | &ErrSub_;
/* redirect stdout */
&msgLog_.redirect_stdout(&ErrFile_);
/* Generate Batch Log Report */
&msgLog_.println_to_stdout("******************************************************************");
&msgLog_.println_to_stdout("* *");
&msgLog_.println_to_stdout("* PeopleSoft JAVA Logging *");
&msgLog_.println_to_stdout("* Sample Report *");
&msgLog_.println_to_stdout(" Generated On : " | %Datetime);
&msgLog_.println_to_stdout("******************************************************************");
and to use this any where in your AE just import the class and create an Object and use the methods...
Hope this helps!!
Thanks Jim!!
Cheerz!!
Prashant