We are planning to create a application that reads all the properties file associated to the mule application running in server.
Our intention to read the properties and update from the custom application instead of providing access to the MMC.
Users can update the Quartz Time schedule, Reschedule, Pause and Resume Jobs and Triggers.
Can we create an application and run in parallel to Mule Instance deployment and read all application properties and update dynamically with out effecting the deployment ( No restart and deployment).
Short answer is no:
The reason why you can't do this is because many components have a special lifecycle and bring up server sockets or connect to jms queues upon that configuration, so even if you change the properties you would least at a bare minimum stop and start the respective components so the previous resources are released and new ones acquired.
The properties file change cannot be detected until the Mule XML is changed. So an alternet option to read the changes in the
properties file is to change some thing in Mule XML and save it.
When ever the Mule server detect any changes in the XML file,
XML is read and the mule context is created. This has already been discussed here :- http://forum.mulesoft.org/mulesoft/topics/can-we-reload-properties-without-restarting-application
So if you want to create an application in Mule to read the updated value from properties you always need that application to do some changes in your Mule XML
Related
Using NiFi v0.6.1 is there a way to import backups/archives?
And by backups I mean the files that are generated when you call
POST /controller/archive using the REST api or "Controller Settings" (tool bar button) and then "Back-up flow" (link).
I tried unzipping the backup and importing it as a template but that didn't work. But after comparing it to an exported template file, the formats are reasonably different. But perhaps there is a way to transform it into a template?
At the moment my current work around is to not select any components on the top level flow and then select "create template"; which will add a template with all my components. Then I just export that. My issue with this is it's a bit more tricky to automate via the REST API. I used Fiddler to determine what the UI is doing and it first generates a snippet that includes all the components (labels, processors, connections, etc.). Then it calls create template (POST /nifi-api/contorller/templates) using the snippet ID. So the template call is easy enough but generating the definition for the snippet is going to take some work.
Note: Once the following feature request is implemented I'm assuming I would just use that instead:
https://cwiki.apache.org/confluence/display/NIFI/Configuration+Management+of+Flows
The entire flow for a NiFi instance is stored in a file called flow.xml.gz in the conf directory (flow.xml.tar in a cluster). The back-up functionality is essentially taking a snapshot of that file at the given point in time and saving it to the conf/archive directory. At a later point in time you could stop NiFi and replace conf/flow.xml.gz with one of those back-ups to restore the flow to that state.
Templates are a different format from the flow.xml.gz. Templates are more public facing and shareable, and can be used to represent portions of a flow, or the entire flow if no components are selected. Some people have used templates as a model to deploy their flows, essentially organizing their flow into process groups and making template for each group. This project provides some automation to work with templates: https://github.com/aperepel/nifi-api-deploy
You just need to stop NiFi, replace the nifi flow configuration file (for example this could be flow.xml.gz in the conf directory) and start NiFi back up.
If you have trouble finding it check your nifi.properties file for the string nifi.flow.configuration.file= to find out what you've set this too.
If you are using clustered mode you need only do this on the NCM.
I have created a process in IBM UCD to deploy a .Net application.
My Scenario is that i should be able to provide different application name at run time each time i run the process. How can we do this using property in IBM UCD.
I have tried enabling "Prompt on use" option and also created component property and mapped it to the parameter say ${p:component/application.name} but doesn't seem to work. May be i missing out some sequence of steps.
It would be great if i get detailed steps to making this working.
I take it that you are on version 4.x (uDeploy)?
I would steer clear of the prompt on use approach, that feature was removed in 6.x. While there is a migration in place, its simpler to just avoid it.
Using a property on the component process itself is the way to go. So go to your process configuration, and go to the properties / configuration tab. Create a property there. You'll be prompted for a value whenever you run an application process that uses this component process.
If the property is named "iis.app.name" you would reference it with just ${p:iss.app.name}.
Don't use the property "application.name". That is an automatically created property that gets the name of the UCD Application that you are deploying. If you ever can't find out the right way to reference a property, look at your executed process (at component / application levels). The normal view that lists out all the steps that were run and how long they took is sitting on a tab called "Log". Right next to it is "Properties" tab. Click that and you'll see what properties were available to the process.
Also, you'll have better luck getting fast answers about UC Deploy using their own forum: https://developer.ibm.com/answers/?community=urbancode
Did you tried using process plugin for updating the property file ?
Application >> Process >> Select Process >> Process Editor -- From left panel you can Utility plugins , try with update property option.
In my project I am trying to do the setting where in I can update the dynamic properties in the server/application without even restarting it.
We face this problem that whenever we have to update or change some properties which are dynamic in nature, then every time we have to restart the server/application and this results in unavailability of the server for that time stamp.
I have already found one tool Archaius-ZooKeeper to set it.https://github.com/Netflix/archaius/
We are trying to do it for JBoss servers where we use war file to deploy on server.
Please suggest are there any other method or tool or technology that can be used to set it.
Thanks in advance.
You could consider jRebel, allows you to redeploy your app without any downtime, then you can use jRebel Remoting to redeploy from eclipse to a remote server
You may use Zookeeper. You have to create a Znode and add the properties in the Znode. All your servers/applications should read from this Znode and also put an watch on this Znode for data changes.
Alternately, you may use a database to store the properties along with their modification time. Whenever you change the value of a property, the corresponding modification time is changed. All your applications/servers keep pulling the delta at some intervals (may be 2 secs/ 5 secs etc.).
Or you may have the properties hosted on a web server, or on NFS, or on some distributed cache etc. All your applications/servers keep reading it at some intervals for detecting any changes.
You can use Spring Cloud Zookeeper. I shared a little example here.
I hope you show me resolve in my case.
When I define many process, how to get status data's tracking of that process. In other word, I want to get process's history. My purpose to show for my client checking.
I have defined a process communicate 3 applications and i deploy it to client.but unfortunately, my client would like to add more an application ( up to 4 apps) in the future. i wonder if how to do that? i perhaps open process again and edit it. Have a way create dynamic process.
Thanks very much.
PVA.
You get a very limited "history" in TIBCO Administator (more or less which process instances completed with success/failure; in case of failure it will also provided the exception and where in the process it failed). However that doesn't show you any tracking of the individual steps/activities that the process passed through. For this, you'd either have to put lots of logging steps into your process (and need to build something that parses this information from log files). Or you could use BusinessWorks ProcessMonitoring, which gives you a full history trail for each process automatically. However it not included with BW and you'll probably need a separate license.
Change the process in TIBCO Designer, build a new ear file, re-deploy the new EAR file in TIBCO Administrator.
I have flowchart workflow(4) services runnning on IIS, everything is working fine. now trying for persistence on the same project, i want to add a code activity to persist the current instance based on some condition, Please provide code to save the current instance in sql store (db) I mean persisting.
If you want to save the current state of your workflow you need to add a Persist activity to your workflow. When it executes it will save the state in SQL server.