I want to use a console command from this bundle within my controller: http://knpbundles.com/dizda/CloudBackupBundle
The developer proposes cronjobs, however I want to use the command to backup my database from within my controller.
How would I do that?
I am getting this error message when i simply try to register this command as a service:
You have requested a non-existent service "backupcommandservice".
Thanks for the help!
commands don't quite work that way. Per the note on http://symfony.com/doc/current/cookbook/console/console_command.html#register-commands-in-the-service-container
registering a command as a service doesn't do much other than control location and dependency injection.
if you want to call a command: http://symfony.com/doc/current/components/console/introduction.html#calling-an-existing-command
that being said you shouldn't call commands from within a controller since you're basically asking to wait for this command to finish executing before you return a response. You'd be better off just sending a request to a queue box (for example beanstalk) and have a worker perform the job.
Related
I want to use mbeans on startup of j2ee application to check if all the MDBs are running and jms specification has been activated.
Any pointers will be very helpful
The only way I know of to do this would be to use the ServerEndpointControl MBean. This is a Liberty specific MBean for controlling the input sources for work into the runtime. This can also be used to get status on http listeners.
The best place to find the Javadoc for the MBean is here. To find out if an MBean is running you call the isPaused method providing the MDB name which is defined as:
ApplicationName#ModuleName#BeanName
if the MDB is running it'll return false.
I have a bash script that I want to be executed before a user can login to the server. I cannot find any information on when this script is exactly executed for different images. Can I assume that this is before a user is able to login using ssh? I'm using cirros.
openstack server create --user-data before_login.sh ...
As soon as your instance boots up this user-data script "before_login.sh" executes on it before any user login into the instance.
User-scripts run at final stage, this stage runs as late in boot as possible. Any scripts that a user is accustomed to running after logging into a system should run correctly here.
You can check below link for cloud-int behaviors for more information
https://cloudinit.readthedocs.io/en/latest/topics/boot.html
Would you know how to run a background task on Symfony 4, based on the setup of a form ? This would avoid that the user has to remain on the form until the task is finished.
The idea would be that when the form is validated, it starts an independant background task. Then the user can continue its navigation and come back once the task is finished to get the results.
Thanks for your help,
You need to use pattern Message Bus. Symfony has own implementation of this pattern since version 4.1 introducing Messenger Component.
You can see documentation here: https://symfony.com/doc/current/components/messenger.html
To get it work you need some external program that will implement AMQP protocol. Most popular in PHP world IMHO RabbitMQ.
A very simple solution for this could be the following procedure:
Form is valid.
A temporary file is created.
Cronjob gets executed every five minutes and starts a symfony command.
The command checks if the file exists and if it's empty.
If so, the command works of the background task. But before this, the command write it's process id in the file to prevent from beeing excuted a second time.
Remove the file when the command has finished.
As long as the file exists you can show a hint for the user that the task is running.
I'm looking for a way to launch a custom script when a coordinator start.
So when a coordinator start the running of a job, I'd need to make for example an api call to a third party service.
Is there a way or a workaround to make this possible?
Thank you
Solution found: the key is the property oozie.wf.workflow.notification.url
add in the workflow configuration file, the following parameter
<property>
<name>oozie.wf.workflow.notification.url</name>
<value>http://server_name:8080/oozieNotification/jobUpdate?jobId=$jobId%26status=$status</value>
and create a webservice listening on this url
I am working for my client using Asp.net webAPI2 and angularJS. Now my client have following requirement,but i am unable to understand what type of project i have to create like WebAPI project,window service or any other? Anyone please tell me what the client actually want and how can i do it?
QueueManager will need to be some kind of a service which would be able to run jobs on a timed basis. We envision it being a service that runs on a continuous loop, but has a Thread.Sleep at the end of each iteration with a duration of x-seconds (“x” being set in a config file.) You should create this QueueManager service as a new project within the Core.Jobs project; I would like to have the project name be “Core.Jobs.QueueManager”, along with the base namespace.
Here are the functions that the QueueManager will do for each iteration:
1) Do a worker healthcheck (JobsAPI: Queue/WorkerHealthCheck – already created)
a. This method will just return a 200 status code, and a count of workers. Not need to act on the return value.
Look at Hangfire, it is quite easy to set up and simple to use.
http://docs.hangfire.io/en/latest/background-methods/performing-recurrent-tasks.html