I have a java 7 EE web application. For logging I am using logback. How can I see the logs, which are printed with logger.debug or logger.info in the console or a file while the application is running on a html website online in the form of a HTML table?
Is there nothing like http://www.example.com/mywebapp/logback-logs.html ?
I would like to have something like the following:
https://logback.qos.ch/manual/layouts.html#ClassicHTMLLayout
https://logback.qos.ch/manual/configuration.html#viewingStatusMessages
Is there any way how I could configure my logback.xml to make all those logs available online?
I think what you should do is log your messages into a file with HTMLLayout configuration and create a REST-Resource in your application that serves this file as response for a simple GET request. I that way you can easily access your logfiles as a web page.
As the purpos of logback is writing logs and not serving them as website, I am not aware of it that this would also be possible with a simple configuration setup.
Related
I've been trying to follow the
Setting Up Stackdriver Debugger for Java applications on Google Compute Engine, but am running into issues with Stackdriver Debug.
I'm building my .war file from a separate build server, then deploying it to my GCE server. I added the agent to the start command via /etc/defaults, and my app appears in the https://console.cloud.google.com/debug control panel. The version I set in the run command matches the revision that shows up in the source-context(s).json files.
However when I click open the app, I see the message that
No source version information was provided by the deployed application
I connected the app's git repo as a mirrored cloud repository, and can browse the source files in the sidebar of the Stackdriver Debug page. But, If I browse to a file and add a breakpoint I get an error that the error "File was not found in the executable."
I have ran the gcloud preview app gen-repo-info-file command, which created two basic json files storing my git repo and revision. Is it supposed to do anything else?
I have tried running jetty using both normal and extracted modes. If I have jetty first extract the war file, I can see the source-context.json filesin the WEB-INF/classes directory.
What am I missing?
https://github.com/GoogleCloudPlatform/cloud-debug-java#extra-classpath mentions
you can update the agentPath showing your WEB-INF/class directory.
-agentpath:/opt/cdbg/cdbg_java_agent.so=--cdbg_extra_class_path=/opt/tomcat/webapps/myapp/WEB-INF/classes
For multiple class paths:
-agentpath:/opt/cdbg/cdbg_java_agent.so=--cdbg_extra_class_path=/opt/tomcat/webapps/myapp/WEB-INF/classes:/another/path/with/classes
There are a couple of things going on here.
First, it sounds like you are doing the correct thing with gen-repo-info-file. The debugger agent should pick up the json files from the WEB-INF/classes directory.
The debugger uses fuzzy matching to find source files, so as long as the name of the .java file matches a file in your executable, you should not get that error.
The most likely scenario given the information in your question is that you are attaching the debugger to a launcher process, rather than your actual application. Without further details, I can't absolutely confirm that, though.
If you send us more details at cdbg-feedback#google.com, we can look more closely at your case to see if we can understand exactly what's happening, and potentially improve our documentation, since it sounds like you followed the docs pretty closely.
We are developing a service for our QA staff.
The main goal is that a tester from our web interface be able to select from a github branch a dump for this particular machine and click "Deploy" button, then the rails app for testing will be deployed to Digital Ocean.
The feature I am now working on, is collecting deployment logs and displaying them through our web interface.
On DO droplet there is a "logs" folder which contains different log files which are populated during deployment:
migrations_result_#{machine_id}.log, bundle_result_#{machine_id}.log, etc.
Where #{machine_id} is the id of deployed machine on our service(it is not droplet id).
With the help of remote_syslog gem we are monitoring "logs" folders on each droplet and send them through udp to our main service server, and with the help of rsyslog we store them in a particular folder, let's say /var/log/deplogs/
So in /var/log/deplogs/ we have:
migrations_result_1.log, bundle_result_1.log,
migrations_result_2.log, bundle_result_2.log,
...
migrations_result_n.log, bundle_result_n.log
How do I need to monitor this folder and save contents of each log file to mysql database?
I need to achieve something like the following (Ruby code):
Machine.find(#{machine_id}).logs.create!(text: "migrations_result_#{machine_id}.log contents")
Rsyslog does not seems to be able to achieve this. Or am I missing something?
Any advices?
Thanks in advance, and sorry for my English, I hope you can get the idea.
First of all, congratulations! You are in front of a beautiful problem. My suggestion is to use divide and conquer.
Here are my considerations:
Put the relevant folder(s) under version control (for example, GIT)
Check via GIT commands the files that changed every X amount of time.
Also obtain the differences between the prior version of each file, and the new ones, so you can update your database parsing the new info.
Just in case, here are ways to call system commands from ruby.
Hope that helps,
Following process outlined here to create a axis service from a pojo:
Webinar: Building Applications with Carbon Studio for On-Premise and the Cloud.
I create the axis services as described in the webinar.
I did a mvn package sucessfully.
I start the WS02 ESB in eclipse sucessfully.
But when I deploy my app to the WS02 ESB, I see the following in the console:
INFO - ApplicationManager Deploying Carbon Application : MyCarbonApp-1.0.0.car...
WARN - ApplicationManager No artifacts found to be deployed in this server. Ignoring
Carbon Application : MyCarbonApp-1.0.0.car
and the service does not appear on the ESB console's web services list.
When I look at the file called MyAxisService.service I see the following:
#Contains the information about the axis2 service generation information from the eclipse workspace
#Fri May 25 15:53:09 NZST 2012
Class-name=com.unisys.comms.esbselection.MyAxisService
Type=FROM_CLASS
Service-name=MyAxisService
Projects=MyCarbonApp
What does this warning mean?
What can I do to further investigate the cause?
Is there some obvious step I've missed when creating the app?
Thanks in advance.
Please follow these steps to solve this issue.
Go to carbon.xml file locate in ....\wso2esb-4.9.0\repository\conf
Add new server role to xml elemet
EnterpriseServiceBus
ApplicationServer
Restart the server
This error means the Server Roles of the C-App Artifacts found in your Carbon Application Archive (CAR), does not match the Server Role of the ESB.
Reason is, Axis2 Web Services are by default has the Server Role of "ApplicationServer". Hence if you deploy it on the WSO2 AS, it will deploy without any problem. But in this case, you have tried to Deploy it the WSO2 ESB. Since the WSO2 ESB has the Server Role "EnterpriseServiceBus" and your Axis2 web service has the Server Role "ApplicationServer", they do not match each other. Result is the C-App deployer will ignore the C-App.
To solve this, you need to change the Server Role of your Axis2 Web Service. In order to do that, follow the steps below.
Go the C-App project you created and browse to the Axis2 Service Artifact folder in the "Artifacts" folder of the C-App.
Inside this Axis2 Service Project, you will see a file called "Artifact.xml". Open this file by double clicking on the file.
Once you double click on the file, file will be opened in the Artifact editor. Scroll the Editor down a bit.
There you will see a Drop Down next to a Label called "Server Role".
Select "EnterpriseServiceBus" option from the Drop down list and click on "Save All" button on the Eclipse Tool bar.
Go to the Servers view in Carbon Studio and click on the expand icon infront of the Carbon Server (WSO2 ESB in this case)
Once you expand the Server, you will be able to see the Server Module (C-App project) you deployed in the ESB.
Right Click on the C-App module under the ESB Server and Select "Redeploy".
Now you will see that Carbon Studio redeploy the C-App project and if you followed all the steps above correctly, your Axis2 Web Service will be deployed in the ESB.
Hope this helps!!
Thanks.
/Harshana
I have successfully implemented rest webservice using apache wink. I am using ant to build war and to deploy it to tomcat server. Now I want include html or jsp file in the project to display some results. But I dont know how to include it via ant build file. I tried copy and pasting the html file in the root folder as well as web-inf folder in tomcat's webapp folder and than restarted it. But so far I am not able to access it. Whenever I try to access html page it gives me error
org.apache.wink.server.internal.RequestProcessor - The following error occurred during the invocation of the handlers chain: WebApplicationException (404 - Not Found) with message 'null' while processing GET request sent to http://localhost:8080/outliers/index.html
Please help me how can I include html file in my server.
Basically you should just put the html file in the war's root directory. \
Don't put it in WEB-INF, it's is not accessible from the web!
If the html file in root directory, and you still cannot access it, check that tomcat started without errors. Sometimes errors are not displayed in console, so check the logs.
I wrote a Windows Service program, say myService.exe and it has myService.exe.config file. But it seems changes to the app.config is not repected by the service until the service is restarted. So, is this by design? Or how could I make my service always respects the config file change without restarting?
Thanks!
This is by design, it doesn't work the same as a web.config file.
You can use a FileSystemWatcher object to monitor for changes to the config file, and take an appropriate action if the file changes.
Yes, any .NET console/Winforms/Windows Service application will read its corresponding config file at startup and cache its contents. Altering it while the app is running typically doesn't change the running app.
If you need this kind of feature, you'd have to implement that yourself - e.g. make the app re-check the config periodically, or respond to a filesystem-watcher event that the file has changed.