TaskExecutor | centralized asynchronous Task execution framework

 by   nseidm1 Java Version: Current License: No License

kandi X-RAY | TaskExecutor Summary

kandi X-RAY | TaskExecutor Summary

TaskExecutor is a Java library. TaskExecutor has no vulnerabilities and it has low support. However TaskExecutor has 4 bugs and it build file is not available. You can download it from GitHub.

The TaskExecutor is an implementation of a robust, consolidated, and centralized asynchronous Task execution framework. Tasks are persisted to disk, accommodate configurationChanges, new Activity creation, and even survive process termination. With many options, your Tasks are almost guaranteed to execute, and post back directly to the current activity via a hard callback.

            kandi-support Support

              TaskExecutor has a low active ecosystem.
              It has 27 star(s) with 3 fork(s). There are 6 watchers for this library.
              It had no major release in the last 6 months.
              TaskExecutor has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of TaskExecutor is current.

            kandi-Quality Quality

              TaskExecutor has 4 bugs (2 blocker, 0 critical, 0 major, 2 minor) and 75 code smells.

            kandi-Security Security

              TaskExecutor has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              TaskExecutor code analysis shows 0 unresolved vulnerabilities.
              There are 6 security hotspots that need review.

            kandi-License License

              TaskExecutor does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              TaskExecutor releases are not available. You will need to build from source code and install.
              TaskExecutor has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              TaskExecutor saves you 494 person hours of effort in developing the same functionality from scratch.
              It has 1162 lines of code, 126 functions and 26 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed TaskExecutor and discovered the below as its top functions. This is intended to give you an instant insight into TaskExecutor implemented functionality, and help decide if they suit your requirements.
            • Region TaskTracker
            • Inflates a task
            • Unmarshall a file
            • Inflates the queued items in the queue
            • Gets the task executor reference
            • Post completed tasks
            • Sets the dirty state
            • Invoked when the command is started
            • Called when autoExecution is enabled
            • Force load
            • Returns the number of items currently in the queue
            • Marks the queue modification
            • Called periodically to update tasks
            • Post an update to the UI thread
            • Notify all tasks that have been restored
            • Gets the task executor
            • Run the task
            • Add a task to the queue
            • Clean the autoexec task
            • Set the thread pool to use
            • Find a Task that has the specified TAG
            • Clears the queue
            • Start loading
            • Stops the loading
            • Resume the executor
            • Clean up task executor
            Get all kandi verified functions for this library.

            TaskExecutor Key Features

            No Key Features are available at this moment for TaskExecutor.

            TaskExecutor Examples and Code Snippets

            No Code Snippets are available at this moment for TaskExecutor.

            Community Discussions


            Spring Batch with multi - step Spring Cloud Task (PartitionHandler) for Remote Partition
            Asked 2022-Apr-03 at 07:59

            Latest Update (with an image to hope simplify the problem) (thanks for feedback from @Mahmoud)

            Relate issue reports for other reference (after this original post created, it seem someone filed issues for Spring Cloud on similar issue, so also update there too):

            https://github.com/spring-cloud/spring-cloud-task/issues/793 relate to approach #1

            https://github.com/spring-cloud/spring-cloud-task/issues/792 relate to approach #2

            Also find a workaround resolution for that issue and update on that github issue, will update this once it is confirmed good by developer https://github.com/spring-cloud/spring-cloud-task/issues/793#issuecomment-894617929

            I am developing an application involved multi-steps using spring batch job but hit some roadblock. Did try to research doc and different attempts, but no success. So thought to check if community can shed light

            Spring batch job 1 (received job parameter for setting for step 1/setting for step 2)



            Answered 2021-Aug-15 at 13:33
            1. Is above even possible setup?

            yes, nothing prevents you from having two partitioned steps in a single Spring Batch job.

            1. Is it possible to use JobScope/StepScope to pass info to the partitionhandler

            yes, it is possible for the partition handler to be declared as a job/step scoped bean if it needs the late-binding feature to be configured.

            Updated on 08/14/2021 by @DanilKo

            The original answer is correct in high - level. However, to actually achieve the partition handeler to be step scoped, a code modification is required

            Below is the analyze + my proposed workaround/fix (maybe eventually code maintainer will have better way to make it work, but so far below fix is working for me)

            Issue being continued to discuss at: https://github.com/spring-cloud/spring-cloud-task/issues/793 (multiple partitioner handler discussion) https://github.com/spring-cloud/spring-cloud-task/issues/792 (which this fix is based up to use partitionerhandler at step scope to configure different worker steps + resources + max worker)

            Root cause analyze (hypothesis)

            The problem is DeployerPartitionHandler utilize annoation @BeforeTask to force task to pass in TaskExecution object as part of Task setup

            But as this partionerHandler is now at @StepScope (instead of directly at @Bean level with @Enable Task) or there are two partitionHandler, that setup is no longer triggered, as @EnableTask seem not able to locate one partitionhandler during creation.

            https://github.com/spring-cloud/spring-cloud-task/blob/main/spring-cloud-task-batch/src/main/java/org/springframework/cloud/task/batch/partition/DeployerPartitionHandler.java @ 269

            Resulted created DeployerHandler faced a null with taskExecution when trying to launch (as it is never setup)

            https://github.com/spring-cloud/spring-cloud-task/blob/main/spring-cloud-task-batch/src/main/java/org/springframework/cloud/task/batch/partition/DeployerPartitionHandler.java @ 347

            Workaround Resolution

            Below is essentially a workaround to use the current job execution id to retrieve the associated task execution id From there, got that task execution and passed to deploy handler to fulfill its need of taskExecution reference It seem to work, but still not clear if there is other side effect (so far during test not found any)

            Full code can be found in https://github.com/danilko/spring-batch-remote-k8s-paritition-example/tree/attempt_2_partitionhandler_with_stepscope_workaround_resolution

            In the partitionHandler method

            Source https://stackoverflow.com/questions/68647761


            ViewModel UI testing with JUnit 5
            Asked 2022-Mar-17 at 15:28

            I am trying to add some unit tests to my app and I am finding some problems adding tests to my ViewModel's classes.

            I have created a standard ViewModel class using the androidx. lifecycle library.

            Inside these ViewModel classes, I launch a Coroutine to make an API call and retrieve some data.

            For this, I have created a ViewModel extension function just to call a Use Case to finally make the API call.



            Answered 2022-Mar-17 at 15:28

            Okay, so I find out the problem. I was using a solution for JUnit 4, not for the JUnit 5 library.

            1. The extension I have created was right, whenever we use LiveData objects, we should update LiveData objects immediately.
            2. How I was setting up the Coroutine scope for test cases, it was wrong. I was using a solution for JUnit 4 but I should modify the code to make the same but for JUnit5.

            Source https://stackoverflow.com/questions/69423060


            Manage access to shared resource with Project Reactor
            Asked 2022-Feb-23 at 10:26

            How to manage access to shared resources using Project Reactor?

            Given an imaginary critical component that can execute only operation at the time (file store, expensive remote service, etc), how could one orchestrate in reactive manner access to this component if there are multiple points of access to this component (multiple API methods, subscribers...)? If the resource is free to execute the operation it should execute it right away, if some other operation is already in progress, add my operation to the queue and complete my Mono once my operation is completed.

            My idea is to add tasks to the flux queue which executes tasks one by one and return a Mono which will be complete once the task in the queue is completed, without blocking.



            Answered 2022-Feb-23 at 10:26

            this looks like a simplified version of what the reactor-pool does, in essence. have you considered using that with eg. a maximum size of 1?



            The pool is probably overkill, because it has the overhead of having to deal with multiple resources on top of multiple competing borrowers like in your case, but maybe it could provide some inspiration for you to go further.

            Source https://stackoverflow.com/questions/70529490


            MongoDB docker replica set connection error "Host not found"
            Asked 2021-Oct-18 at 11:10

            I have a local MongoDB replica set created following this SO answer.

            The docker-compose file:



            Answered 2021-Aug-06 at 00:45

            There are some partial answers on this issue from various places, here is what I think as a complete answer.

            The Cause
            • Mongo clients use the hostnames listed in the replica set config, not the seed list

              Although the connection string is "mongodb://localhost:27017,localhost:27018,localhost:27019/?replicaSet=rs", mongo client does not connect to the members of the replica set with seed addresses localhost:27017 etc, instead the client connects to the members in the replica config set returned from the seed hosts, i.e., the ones in the rs.initiate call. This is why the error message is Error connecting to mongo1:27017 instead of Error connecting to localhost:27017.

            • Container hostnames are not addressable outside the container network

              A mongo client inside the same container network as the mongo server containers can connect to the server via addresses like mongo1:27017; however, a client on the host, which is outside of the container network, can not resolve mongo1 to an IP. The typical solution for this problem is proxy, see Access docker container from host using containers name for details.

            The Fix

            Because the problem involves docker networking and docker networking varies between Linux and Mac. The fixes are different on the two platforms.


            The proxy fix (via 3rd party software or modifying /etc/hosts file) works fine but sometimes is not viable, e.g., running on remote CI hosts. A simple self-contained portable solution is to update the intiate_replia_set.sh script to initiate the replica set with member IPs instead of hostnames.


            Source https://stackoverflow.com/questions/68674897


            Spring Boot async task stuck on shutdown
            Asked 2021-Oct-08 at 18:11

            As per spring documentation for setWaitForTasksToCompleteOnShutdown

            Set whether to wait for scheduled tasks to complete on shutdown

            Does it mean that if any task is stuck on some long running process and we explicity try to stop the container, it will not be terminated untill that task is finished?



            Answered 2021-Oct-08 at 18:11

            Short answer? Yes

            On shutdown ( either by hitting by a request to the shutdown end point or by calling applicationcontext.close ) by default, Spring's TaskExecutor simply interrupts all running tasks.

            Note that your threads must be in an interruptible state (e.g. sleep) to actually be interrupted.

            In some cases you may want to wait for all running tasks to be complete.

            calling setWaitForTasksToCompleteOnShutdown(true) simply prevents interrupting the running tasks on shutdown and ensures that both the currently executing tasks and queued up tasks are completed.

            ( I assume this is because they are non-daemon threads that prevent application exit. )

            In short, the answer to your question is yes.

            You can play with the following piece of code. When you change setWait from false to true, you will see that the application will not exit until the sleep is over. When you set it to false, the application will terminate immediately.

            Source https://stackoverflow.com/questions/69498421


            Spring Batch : HikariPool-1 - Connection is not available, request timed out after 30000ms
            Asked 2021-Sep-17 at 13:59

            I've the following error whith SpringBatch :



            Answered 2021-Sep-16 at 08:48

            There are two key parameters here: the size of your worker threads pool and the size of your datatbase connection pool.

            If each thread requests a database connection and you have more workers than available connections, then at some point worker threads will wait for connections to become available. This wait could timeout if no connections are released before the configured timeout value.

            So you need to make sure you have enough connections for your worker threads, or increase the timeout in your connection pool.

            Source https://stackoverflow.com/questions/69178742


            Get all text inside box in a preview camerax android
            Asked 2021-Aug-19 at 14:17

            i want to analyse all text that is just inside by box that i have in a preview camera. But im getting wrong coordinates for text.

            Validation is done on contains



            Answered 2021-Aug-19 at 14:17

            The difficulty that you are having is getting a good mapping from the image in the ImageProxy to what is displayed by the PreviewView. Although this sounds easy, I don't believe there is straightforward way to do this mapping. See the answer to a similar question. I took a look at implementing each of the suggestions in this answer and, although they worked in some situations, they failed in others. Of course, I could have taken the wrong approach.

            I have come to the conclusion that extracting and analyzing a bitmap extracted from the preview area and identifying those words that are completely enclosed by the red rectangle is the simplest. I circumscribe those words with their own red rectangle to show that they have been correctly identified.

            The following is the reworked activity, a graphic overlay the produces the word boxes and the XML for the display. Comments are in the code. Good luck!


            Source https://stackoverflow.com/questions/68730714


            WebFlux + MongoDB + docker compose = error
            Asked 2021-Aug-12 at 11:47

            I've got a problem with this integration. I use MongoDB based on docker without problems, but when I create a Docker Compose, the Spring Boot WebFlux stop to find the Mongo. I'm trying to find the problem, but I don't know how to solve it.

            The service log shows me this problem:



            Answered 2021-Aug-05 at 15:30

            So what exactly is the problem here? Without knowing more about the application, I can't really tell why it's trying localhost first, but it seems like it's able to connect to mongo running on the person-db container after that based on these logs:

            Source https://stackoverflow.com/questions/68668628


            SchedulingConfigurer/CronTrigger regex is not working as expected
            Asked 2021-Aug-09 at 15:47

            I am using Spring SchedulingConfigurer and CronTrigger to trigger a job at every 5 minutes but code is not working as expected.



            Answered 2021-Aug-09 at 15:47

            Finally I got the solution with the help of CronMaker.

            Source https://stackoverflow.com/questions/68711988


            First time with MongoDB + Docker - Set up from docker compose
            Asked 2021-Jul-28 at 21:28

            I'd like to try a project I found on GitHub, so I installed MongoDB on MacOS and now I'm trying to understand how to set up it correctly through the docker compose file in the directory. This is the docker file:



            Answered 2021-Jul-28 at 21:28

            So here is an attempt at helping.. For the most part, the docker compose yaml file is pretty close, with exception of some minor port and binding parameters. There is an expectation that initialization will be additional commands. Example:

            1. docker-compose up the environment
            2. run some scripts to init the environment

            ... but this was already part of the original post.

            So here is a docker compose file


            Source https://stackoverflow.com/questions/68517126

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install TaskExecutor

            You can download it from GitHub.
            You can use TaskExecutor like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the TaskExecutor component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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