I would like to create a single log file for entire application.
The log file name convection should includes date and time like this: MyLog_31122022_0915.log
Right now each class creates a new instance meaning a new log file.
If I change the log file name convention, removing date and time, I get a single file, the problem is the the same file is used for each new run of the application.
How can it be done?
You can use ${processinfo} to log process-starttime:
fileName="MyLog_${processinfo:StartTime:format=ddMMyyyy_HHmm:cached=true}.log"
You can adjust the DateTime-format to include seconds / milliseconds to make it more unique. Or you can include ${processid}:
fileName="MyLog_${processinfo:StartTime:format=ddMMyyyy_HHmmss:cached=true}_${processid}.log"
Related
I wanted to implement a log rotation option in linux. I have a *.trc file where all the logs are getting written. I wanted a new log file to be created every hour. I have done some analysis and found the below
I have done some analysis and got to know about the logrotate option. Where we need to update the rotation details for a specific file in the logrotate.conf file
I wanted to know if there is an option without using the logrotate option. I wanted to rotate the logfiles on an hourly basis, so something like appending date and hour information to the log file and create new files based on the current hour information.
Im looking for some suggestions on how to implement the log rotation using the second option specified above.
Any details on the above would be really helpful
If you have control over the process that creates the logs, you could just timestamp the file at the moment of creation. This will remove the need to rename the log.
Before you write every line you check the time. If one hour passed after that file was created, you close the current file and open a new one with a new timestamp.
If you do not have control over the process, you can pipe the output of your process (stdout,stderr) to multilog, which is a binary that's part of the package daemon-tools in most Linux distros.
https://cr.yp.to/daemontools/multilog.html
I am using the file component with an argument quartz scheduler in order to pull some files from a given directory on every hour. Then i transform the data from the files and move the content to other files in other directory. After that I am moving the input files to an archive directory. When a file is moved to this directory it should stay there only a week and then it should be deleted automatically. The problem is that Im not really sure how can i start a new cron job because I dont really know when any of the files is moved to that archive directory. Maybe is something really trivial but I am pretty new to camel and I dont know the solution. Thank you in advance.
Use option "filterFile"
Every file has modified timestamp and you can use this timestamp to filter file that are older than 1 week. Under file component, there exist an option filterFile
filterFile=${date:file:yyyyMMdd}<${date:now-7d:yyyyMMdd}
Above evaluation comes from file language, ${date:file:yyyyMMdd} denote modified timestamp of the file in form (year)(month)(day) and ${date:now-7d:yyyyMMdd} denote current time minus 7 days in form (year)(month)(day).
I have a process that periodically gets files from a server and copy them with SFTP to a local directory. It should not overwrite the file if it already exists. I know with something like Winston I can automatically rotate the log file when it fills up, but in this case I need a similar functionality to rotate files if they already exist.
An example:
The routine copies a remote file called testfile.txt to a local directory. The next time it's run the same remote file is found and copied. But now I want to rename the first testfile.txt to testfile.txt.0 so it's not overwritten. And so on - after a while I'd have a directory of files with the name testfile.txt.N and the most recent testfile.txt.
What you can do is you can append date and time on the file name that gives every filename a unique name and also helps you archive it.
For example you text.txt can be either 20170202_181921_test.txt or test_20170202_181921.txt
You can use a JavaScript Date Object to get date and time.
P.S show your code of downloading files so that I can add more to that.
I wonder if you can configure logstash in the following way:
Background Info:
Every day I get a xml file pushed to my server, which should be parsed.
To indicate a complete file transfer afterwards I get an empty .ctl (custom file) transfered to the same folder.
The files both have the following name schema 'feedback_{year}{yearday}_UTC{hoursminutesseconds}_51.{extention}' (e.g. feedback_16002_UTC235953_51.xml). So they have the same file name but one is with .xml and the other is a .ctl file.
Question:
Is there a way to configure logstash to wait parsing the xml file until the according .ctl file is present?
EDIT:
Is there maybe a way to archiev that with filebeat?
EDIT2:
It would also be enough to be able to configure logstash in a way that it will wait x minutes before starting to process a new file, if that is easier.
Thanks for any help in advance
Your problem is that you don't want to start the parser before the file transfer hasn't been completed. So, why don't push the data to a file (file-complete.xml) when you find your flag file (empty.ctl)?
Here is the possible logic for a script and runs using crontab:
if empty.ctl exists:
Clear file-complete.xml
Add the content of file.xml to file-complete.xml.
Remove empty.ctl
This way, you'd need to parse the data from file-complete.xml. I think is simpler to debug and configure.
Hope it helps,
I want to know how to dynamically assign file name using Log4net .My application is such that 10 different files should be dynamically created based on user input ,and later based on the name the corresponding file name needs to be picked up and information written to it
For example in my application based on my buisness requirement for every xml file a corresponding log file with the same name as xml file should be created .Later whenever I do any modification to the xml file an entry needs to be in the corresponding log file
Please help . I having trouble to get control of the appropriate log to write it
Have not done this, but there are probably a number of ways of doing this, so this may not be the best way, but it should work
public OpenLogFile(string fileName)
{
log4net.Layout.ILayout layout = new log4net.Layout.PatternLayout("%d [%t]%-5p : - %m%n");;
log4net.Appender.FileAppender appender = new log4net.Appender.FileAppender(layout , filename);
appender.Threshold = log4net.Core.Level.Info;
log4net.Config.BasicConfigurator.Configure(appender);
}
Then just call OpenLogfile when you need to switch files.
You might need to tweak the layout or appender type.
A big disadvantage of this method is you losing the xml configuration and the ability to change settings at runtime. So a better way might be to configure your appender in the xml file to use a property
eg
file type="log4net.Util.PatternString" value="Logfiles\Log_For_%property{MyLogFileName}"
Then in your code you could change the property
log4net.GlobalContext.Properties["MyLogFileName"] = ...;
The tricky bit is to get log4net to reload itself. I haven't read the documentation of this, so I don't know if there is a way of forcing a reload. It might work if you just call log4net.Config.XmlConfigurator.ConfigureAndWatch again. Otherwise it should work if you opened the xml file and saved it again (without needing to change anything)
Hope this helps.