I am trying to write 2 Axis2 handlers but there is there is something missing I can't put my hand on
The first handler is supposed to start at the very beginning before anything else, it will read the message header, parse the information I want from it and save it to a file then move on.
The second handler will execute after Axis2's Rampart finishes operation, which I assume is after the security phase. It will read the file and execute the logic on it (it wont touch the message contex)
I tried reading the guide on Axis2's website but it was not very beginner friendly, if someone can guide me to a simple way to approach this I would be thankful
You have to make the handlers in order. That is, you have to add the execution phases(In/out/fault flows) and define your handlers in order there. For example, check the axis2.xml, and how they defined the phases/handlers there.
Check this guide
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I have a Mule 4 flow that uses the [File] On New or Updated File event source. This element is configured to wait for file changes within a specific folder.
When I deploy my flow, and the deployed application does not have access to the specified folder, a log message is generated and the flow terminates. However, I'd like to add some additional processing in this case. (I'd like to log a message to an alternative event log).
I tried adding an On Error Propagate element to the flow, but this is not triggered when the error occurs - I think this is because the error is a system error rather than a messaging error.
If I could add a step before the On New or Updated File element, then I could check for the existence of the folder, and execute that extra code there - but I see no way to do that either.
Well, I was able to do something that "works". I created another flow that runs on a (long) timer, which runs immediately and checks for the existence of the folder by attempting to list its contents. If that fails, then the On Error ... block of that flow is reached, because in this case the error is treated as a messaging error rather than a system error.
Not an ideal solution, but a solution nonetheless.
May I suggest that you monitor folder which should contain none existing folder?
For exmple you want to monitor /one/two/three/abc.txt. three does not exist. Watch two for new and updated files.
Is there any way to tell in ASP.NET Core if any given middleware will contain a Run() call which will stop the pipeline? It seems that UseMvc() is one big one, but I am not even certain about that, I just keep reading that it needs to go at the end, I assume it is because it contains a call to Run().
Perhaps there is a way to generate a visualisation of the pipeline for all middleware currently in use, showing which one contains the Run() call?
There is no sure way to tell, beyond reading documentation on each specific piece of middleware.
quoting itminus in the comments on my question:
Not only Run(), but also MapWhen() will terminate the process. Also, anyone could create a custom middleware that doesn't invoke the next delegate and then cause to a terminate.
It's the duty of middleware to determine whether there's a need to to call next. There's no built-in way to visualize the pipeline except you read the document/source code. That's because all the middlewares will be built into a single final delegate at startup time. When there's an incoming message, the final delegate will be used to process requests. As a programmer, we know what will be done by the middlewares, we know the time when it branches, and we know the time it terminates that's because we write the code. But the program won't know it until it actually runs just because the final delegate is built at startup time.
I've watched quite a few videos on YouTube and have a basic understanding of how to find user-exits (enhancements?) and implement them. However when I try to replicate what I've seen it doesn't appear to be working.
I'm looking to create a user-exit that would execute when a production order has been confirmed (closed/finished) via CO11N. Someone suggested that I put in a line of code "BREAK username." So that I could verify that my code was firing. Nothing breaks. I've tried putting in a message from code found on the internet
MESSAGE s208(00) WITH 'TEST'.
No message is shown. I've activated the include and the project. I've tried different exits/includes and no matter what I do, nothing seems to break or show a message.
Is there something simple I'm missing? I've tried CONFPI05 and CONFPM05.
CONFPI05 is for process orders. CONFPM05 is for plant maintenance orders. First you need to check which kind of order you use. I assume you use production orders. You should check User-Exit CONFPP05 than.
Anyway, I would recommend using BAdI WORKORDER_CONFIRM. Within this BAdI there are methods available where you can raise an error message.
From the BAdI documentation:
Note that in the methods, no system messages may be sent. The only
exceptions are the AT_SAVE and AT_CANCEL_CHECK methods. Within these
methods, a system message may be issued, but only if you trigger the
exception ERROR_WITH_MESSAGE (for AT_SAVE method) or NOT_ALLOWED (for
AT_CANCEL_CHECK method) at the same time.
Note also that within the methods, the "commit work" instruction may
not be carried out because this would lead to incorrect data in the
database.
I strongly recommend not to use MESSAGE statement in any User-Exit or BAdI implementation. The MESSAGE statement will implicit call a COMMIT WORK which could cause database inconsistencies (happens very often by the way).
One additional note. You should check using Checkpoint Groups instead of using BREAK-POINT or BREAK username directly.
I checked the documentation:
CONFPI05 to update your own data after saving the confirmation
In another documentation I found another warning:
In this customer enhancement it is strictly forbidden to send error messages or other messages because otherwise there is the danger that data will be inconsistent. SAP cannot be held responsible for this!!
This sounds like changes in update task. By default breakpoints in update task are not enabled.
Should your code be processed after you pushed save?
If yes, what you can try:
Set anywhere a breakpoint. Or try /h during data insertion.
In debug screen activate the update debugging:
Continue the process with F8.
Hopefully you stop at your break-point.
I'm trying to create a custom build of noflo-ui that is effectively only a graph editor. Don't need it to connect to any runtimes.
I'm struggling to find where I can inject this code as it appears part of noflo-ui is written in noflo itself and I cannot find the scripts for those pieces.
For example, in graphs/main.fbp, there is this line:
'user,main,project,github,runtime,context' -> ROUTES Dispatch
Three questions on this:
Where is the source behind the Dispatch component?
If I add my own interface elements to Load data from an external api, where would be the best place to inject that data?
I see a lot of event driven code, so I'm guessing I would add a new polymer element, do my ajax call, the emit or fire something. I believe this is what happens when connecting to a noflo-nodejs runtime; I've traced the connection to line 51312 in a built noflo-ui.js
return port.send({
componentDefinition: definition
});
... but I can't figure out where it goes past here. A port on the main.fbp graph? As per my 1st question, I cannot find the source behind these core graphs.
And this leads to my last question
The code I pasted above from noflo-ui, I cannot find this code anywhere pre-build. I even searched the entire project tree for "componentDefinition: definition". Where is this coming from?
Any pointers on this would be greatly appreciated! Thanks
The FBP runtime protocol is the primary extension point of noflo-ui. You can implement a "runtime" which just provides components and graphs (for instance from a database), without a way to run these.
A network:persist message to let the UI indicate that "this is a good point to save the graphs" has been specced but is currently not implemented. For now you can just autosave latest state.
I am curious about the proper way to stop a user from activating my plugin if their system does not meet certain requirements. Doing the checks is easy and I don't need any help with that, I am more curious how to tell WordPress to exit and display an error message.
Currently I have tried both exit($error_message) and die($error_message) in the activation hook method. While my message is displayed and the plugin is not activated, a message saying Fatal Error is also displayed (see image below).
Does anyone know of a better way, that would display my message in a proper error box without displaying Fatal error, it just looks really bad for new users to see that.
Thanks for any help in advance.
This is a little undocumented, as you might have noticed. Instead of die(), do it like this:
$plugin = dirname(__FILE__) . '/functions.php';
deactivate_plugins($plugin);
wp_die('<p>The <strong>X</strong> plugin requires version WordPress 2.8 or greater.</p>','Plugin Activation Error',array('response'=>200,'back_link'=>TRUE));
The lines above wp_die() are to deactivate this plugin. Note that we use functions.php in this case because that's where I have my Plugin Name meta data comment declaration -- and if you use a different file, then change the code above. Note that the path is very specific for a match. So, if you want to see what your path would normally be, use print_r(get_option('active_plugins'));die(); to dump that out so that you know what path you need. Since I had a plugin_code.php where the rest of my plugin code was, and since it was in the same directory as functions.php, I merely had to do dirname(__FILE__) for the proper path.
Note that the end of the wp_die() statement is important because it provides a backlink and prevents an error 500 (which is the default Apache code for wp_die()).
It is only a idea though. Try checking the wordpress version and compare then use php to through custom exception/error. PHP 5.0 try catch can be a good way to do it. Here is some resources.
http://www.w3schools.com/php/php_exception.asp
http://php.net/manual/en/internals2.opcodes.throw.php
You can try the first link. It is pretty basic. Thanks! hope the information will be helpful.