serially | based background tasks should run and implement | Job Scheduling library
kandi X-RAY | serially Summary
kandi X-RAY | serially Summary
Have you ever had a class whose instances required a series of background tasks to run serially, strictly one after another? Than Serially is for you. Declare the tasks using a simple DSL in the order you want them to to run. The tasks for each instance will run inside a separate Resque job, in a queue you specify. The next task will run only if the previous one has finished successfully. All task runs are written to DB and can be inspected. Check this demo app to see how Serially may be used in a Rails app.
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Top functions reviewed by kandi - BETA
- Create a new instance .
- Returns an instance of ActiveRecord instance
- returns a new instance of this task
- Calls the error handler for this task .
- Initialize a task
- Iterates over the tasks .
- Enqueue an instance
- Get the current order for the next task
- create a new instance
- Creates a new task .
serially Key Features
serially Examples and Code Snippets
Lines of Code : 44License : Permissive (MIT)
Copyclass Post < ActiveRecord::Base
include Serially
serially do
task :draft
task :review do |post|
# finished successfully
true
end
task :publish do |post|
# block can ret class Post
include Serially
attr_accessor :title
def initialize(title)
@title = title
end
def instance_id
@title
end
serially do
...
end
end
class PostWithAuthor
include Seria class Post < ActiveRecord::Base
include Serially
serially do
task :draft
task :review
task :publish
task :promote
end
def draft
# each task must return a boolean, signifying whether it Community Discussions
Trending Discussions on serially
QUESTION
I am running a main python program on a Windows PC that is hooked to equipment that cannot be ran on an Raspberry pi. At a certain point in the main program, I want to call/execute a Rpi program to run. I need the GPIO pins from the Rpi to turn on a relay/s. Is there a way to wirelessly(or serially) open and run the program on the raspberry pi from the main program already running on the Windows PC?
Maybe I am not thinking of something, is there an easier and just as cheap solution to turn on a relay from the Windows PC program?
Any points in the right direction would be greatly appreciated.
...ANSWER
Answered 2021-Jun-06 at 15:30depending on security requirements. Assuming that the Desktop PC and raspberry pi are on the same network, you could create an HTTP REST endpoint on the pi, you could use flask or fastapi for this. then call that from the app running on the desktop. for help with flask see https://flask.palletsprojects.com/en/2.0.x/ if you are familiar with python flask is fairly simple to get started with.
QUESTION
I need to select the first email in the list, but I don't know when it arrives.
Setting a large timeout for the email to arrive would probably work, but I am looking for a better solution.
I need to select the first row where the .subject is confirm your email address and the time field is a few seconds ago.
This is what I've tried:
...ANSWER
Answered 2021-Jun-02 at 09:39Perhaps reversing the order catches it?
QUESTION
I have a stream of elements that are coming serially: (x0, y0, val0), (x1, y2, val1), ... (xN, yN, valN), etc.
x and y are the coordinates directly pointing where the val should be put in a matrix. I tried the following but it does not work (I expected the interpreter will automatically expand the matrix but it does not):
...ANSWER
Answered 2021-May-28 at 16:31Extend your array to accommodate incoming points as you go. You may end up with a jagged 2D array, but you should be able to square it up easily if you need to.
QUESTION
I'm trying to deploy the ELK stack to my developing kubernetes cluster. It seems that I do everything as described in the tutorials, however, the pods keep failing with Java errors (see below). I will describe the whole process from installing the cluster until the error happens.
Step 1: Installing the cluster
...ANSWER
Answered 2021-May-26 at 05:06For the ELK stack to work you need all three PersistentVolumeClaim's to be bound as I recall. Instead of creating 1 30 GB of PV create 3 of the same size with the claims and then re-install. Other nodes have unmet dependincies.
Also please do not handle the volumes by hand. There are guidelines to deploy dynamic volums. Use OpenEBS for example. That way you wont need to worry about the pvc's. After giving the pv's if anything happens write again with your cluster installation process.
I was wrong obviously, in this particular problem, filesystems and cgroups take role and the main problem of this is an old problem. From 5.2.1 to 8.0.0. Reinstall the chart by pulling the chart. Edit values file and definitely change the container version. It should be fine or create another error log stack.
QUESTION
Please note: someone seems to be serially DVing my questions without explanation. This question is on topic, is not a duplicate, shows research and provides an SSCCE. If you wish to DV or CV it, that's fine, but please provide a comment as to why so I can have a chance to address your concerns...
Spring Boot 2.3.x and Spring Security here.
I have some pretty complicated authorization logic, and so I believe I need to write my own AccessDecisionManager impl and wire it into my WebSecurityConfigurerAdapter impl (if that's wrong or misunderstood in any way, please correct me!).
So then, to implement your own AccessDecisionManager you need to implement 3 methods, one of which is:
ANSWER
Answered 2021-May-19 at 19:30As JavaDoc for AccessDecisionManager says:
object – the secured object being called
Usually, it's an instance of the MethodInvocation interface and it represents the method for which call security decision should be performed.
configAttributes - the configuration attributes associated with the secured object being invoked
It's a collection of metadata attributes related to the security object (Method). For example, it can contain information about annotations related to this method, such as @PermitAll, @PreAuthorize, @PostFilter, etc.
QUESTION
I have an automator service that I was updating to handle a series of input files in combination (instead of serially, like it currently does). It does a bunch of stuff, but in one component of it, I need to process the contents of N files and hand the processing of the output of each file off to a single paste command to combine it all and further process the combo. On the command line, I would do it with process substitution, e.g.:
ANSWER
Answered 2021-May-18 at 22:04Oh my gosh! Right after I posted this, I realized that all I needed to do was escape the parens. I was on the right track with bash -s! I think writing out the question was just the process I had to go through to realize the answer!
QUESTION
I want to run my code using Arduino and Python. I have to write a script to fetch the data serially and save it into a CSV file. When I run the script I get this error "ValueError: could not convert string to float: 'Setup..\r\n'"
ANSWER
Answered 2021-May-17 at 15:54Skip invalid lines with try/except:
QUESTION
I am relatively new to concurrency in Python and I am working on some code that has to call functions outside of my code. I cannot edit those functions but I need them to run concurrently. I've tried a few different solutions like Multiprocessing, Threading and AsyncIO. AsyncIO comes the closest to what I want if every function I was calling was defined with it, but they're not.
The functions I'm calling will block. Sometimes for 15-30 minutes. During that time, I need other functions doing other things. The code below illustrates my problem. If you run it you'll see that whether using Threads or Multiprocesses, the tasks always run serially. I need them to run simultaneous to each other. I get that the output blocks until the entire script runs, but the tasks themselves should not.
What am I missing? With so many choices for concurrency or at least apparent concurrency in Python, I would think this is easier than I'm finding it.
...ANSWER
Answered 2021-May-05 at 21:55Note that the program you posted imports Thread but never uses it.
More importantly, in a line like:
QUESTION
I am unclear on how the scopeId parameter of the SingletonAttribute works. Specifically does the scopeId parameter work for HTTP Trigger Azure Functions when you bind it to a route parameter? How does the binding work? What variables/values can I bind to?
For example:
...ANSWER
Answered 2021-Jan-18 at 03:07You have two ways to implement singleton mode in Azure function.
The first:
You can do this by setting WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUT or maxConcurrentCalls.
Singleton Azure function running as separate instances
The second type:
Create a complete Function project, similar to webapp, and implement it in Configure.
QUESTION
Observables must issue notifications to observers serially (not in parallel). They may issue these notifications from different threads, but there must be a formal happens-before relationship between the notifications.
When it says "happens-before", Does it mean that all the effects by the last onNext notification, (e.g. change an shared state in Observer.onNext() method), will be totally visible to the next onNext notification, just like happens-before guarantee in Java Memory Model?
After reading source code of SerializedObserver(RxJava version 3.0.11), I found downstream.onNext(t) method is not called in the synchronized code block. So, could I say the answer is not?
...ANSWER
Answered 2021-Apr-22 at 10:47will be totally visible to the next onNext notification, just like happens-before guarantee in Java Memory Model?
Yes.
SerializedObserver [...] I found downstream.onNext(t) method is not called in the synchronized code block. So, could I say the answer is not?
Still yes. The synchronized (this) ensures visibility as well as the property that only one thread will be calling onNext because of the emitting flag.
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No vulnerabilities reported
Install serially
If you use ActiveRecord, you can generate a migration that creates serially_task_runs table, which would be used to write the results of all task runs.
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