pubsub | EventBus system for publish and subscribe to events | Pub Sub library

 by   mycila Java Version: Current License: No License

kandi X-RAY | pubsub Summary

kandi X-RAY | pubsub Summary

pubsub is a Java library typically used in Messaging, Pub Sub applications. pubsub has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

Mycila Event is a new powerful event framework for in-memory event management. It has a lot of features similar to EventBus but is better written and uses Java Concurrency features to provide you with:.

            kandi-support Support

              pubsub has a low active ecosystem.
              It has 30 star(s) with 6 fork(s). There are 3 watchers for this library.
              It had no major release in the last 6 months.
              There are 1 open issues and 8 have been closed. On average issues are closed in 379 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of pubsub is current.

            kandi-Quality Quality

              pubsub has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              pubsub 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

              pubsub releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              pubsub saves you 1505 person hours of effort in developing the same functionality from scratch.
              It has 3354 lines of code, 338 functions and 52 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed pubsub and discovered the below as its top functions. This is intended to give you an instant insight into pubsub implemented functionality, and help decide if they suit your requirements.
            • Instantiates a Publisher
            • Registers the given instance with the given instance
            • Creates and invokes a JDK interceptor
            • Intercept the interceptor
            • Publish event to a topic
            • Gets the subscriptions for the given event
            • Creates an event
            • Creates a module that uses Mycila events
            • Looks up an entry in the cache
            • Get the target class
            • Creates a subscription for a given topic matcher and subscriber
            • Creates a subscription instance with the given matcher and subscriber
            • Creates a new fast class
            • Returns the class loader for the given type
            • Handles a request
            • Handles publishing
            • Compares this EventQueue with the specified EventQueue
            • Reply an error
            • Iterates over the given class and returns the fields that match the given predicate
            • Reply reply
            • Create a Requestor
            • Returns a predicate that returns true if the given method has the specified parameters
            • Creates an array of topics
            • Returns true if this signature matches the specified signature
            • Returns true if the two methods are overridden
            Get all kandi verified functions for this library.

            pubsub Key Features

            No Key Features are available at this moment for pubsub.

            pubsub Examples and Code Snippets

            No Code Snippets are available at this moment for pubsub.

            Community Discussions


            GCP API - Determining what role an resource instance has been created with
            Asked 2022-Mar-17 at 16:54

            For the project I'm on, I am tasked with creating a testing app that uses Terraform to create a resource instance and then test that it was created properly. The purpose is testing the Terraform Script result by validating certain characteristics of the resource created. That's the broad outline.

            For several of these scripts a resource is assigned a role. It could be a PubSub subscription, DataCatalog, etc.

            Example Terraform code for a Spanner Database assigning roles/spanner.databaseAdmin:



            Answered 2022-Mar-17 at 16:54

            Thought I should close this question off with what I eventually discovered. The proper question isn't what role is assigned an instance of a resource, but what users have been allowed to use the resource and with what role.

            The proper call is GetIamPolicy which is available in the APIs for all of the resources that I've been working with. The problem was that I wasn't seeing anything due to no user accounts being assigned to the resource. I updated the Terraform script to assign a user to the resource with the required roles. When calling GetIamPolicy, it returns an array in the Bindings that lists roles and users that are assigned. This was the information I needed. Going down the path of using TestIamPermissions was unneeded.

            Here's an example my use of this:



            Google Firebase Functions deployment fails - what can I do?
            Asked 2022-Mar-16 at 09:43

            Error message:



            Answered 2021-Nov-19 at 00:50

            When you are using scheduled functions in Firebase Functions, an App Engine instance is created that is needed for Cloud Scheduler to work. You can read about it here. During its setup you're prompted to select your project's default Google Cloud Platform (GCP) resource location (if it wasn't already selected when setting up another service).

            You are getting that error because there is a difference between the default GCP resource location you specified and the region of your scheduled Cloud Function. If you click on the cogwheel next to project-overview in Firebase you can see where your resources are located. Setting the default GCP resource location same as the scheduler function region, solves the issue.



            Intermittent authentication error when posting to a pubsub topic
            Asked 2022-Jan-27 at 17:18

            We have a data pipeline built in Google Cloud Dataflow that consumes messages from a pubsub topic and streams them into BigQuery. In order to test that it works successfully we have some tests that run in a CI pipeline, these tests post messages onto the pubsub topic and verify that the messages are written to BigQuery successfully.

            This is the code that posts to the pubsub topic:



            Answered 2022-Jan-27 at 17:18

            We had the same error. Finally solved it by using a JSON Web Token for authentication per Google's Quckstart. Like so:



            Failed to unregister class Chrome_WidgetWin_0. Error
            Asked 2022-Jan-20 at 15:17

            I am using Elixir Desktop to make an elixir desktop application:

            And I am successfully able to launch and manage my app. However, when I close it I always get this error:



            Answered 2022-Jan-20 at 15:17

            At the time of this writing, the author pushed a fix to Master in Github. This fix addresses the issue of the application taking a long time to close, however it does not address the Chrome_WidgetWin_0. Error issue.

            This issue is a known one and has already been reported, but there are no signs of fixing it from the Chrome project, so I guess we just have to live with it for the time being:

            Another issue is the crash. Is likely happens because of the previous issue, and therefore there is little one can do here.

            Since the main problem was fixed, I am marking this as solved.



            Apache Beam Cloud Dataflow Streaming Stuck Side Input
            Asked 2022-Jan-12 at 13:12

            I'm currently building PoC Apache Beam pipeline in GCP Dataflow. In this case, I want to create streaming pipeline with main input from PubSub and side input from BigQuery and store processed data back to BigQuery.

            Side pipeline code



            Answered 2022-Jan-12 at 13:12

            Here you have a working example:



            Terraform - How to initialize set variable in tfvars
            Asked 2022-Jan-12 at 11:19

            The Terraform document clearly states variable defined in the root module can be set in tfvars file.

            Type Constraints

            The type constructors allow you to specify complex types such as collections:

            • set()

            Assigning Values to Root Module Variables

            When variables are declared in the root module of your configuration, they can be set in a number of ways:

            • In variable definitions (.tfvars) files, either specified on the command line or automatically loaded.

            An input variable of type set can be defined in a root module.




            Answered 2022-Jan-12 at 11:19

            You just define it as:



            Google Scheduled functions: There was an error deploying functions?
            Asked 2021-Dec-31 at 16:40

            I have a fresh project but was looking to test scheduled functions. Am I missing anything?



            Answered 2021-Nov-20 at 04:06

            When you are using scheduled functions in Firebase Functions, an App Engine instance is created that is needed for Cloud Scheduler to work. You can read about it here.They use the location that has been set by default for resources. I think that you are getting that error because there is a difference between the default GCP resource location you specified and the region of your scheduled cloud function. If you click on the cogwheel next to project-overview in Firebase you can see where your resources are located.

            Check your Cloud Scheduler function details and see which region it has been deployed to. By default, functions run in the us-central1 region. Check this link to see how we can change the region of the function.



            Build a container image from inside a cloud function
            Asked 2021-Dec-22 at 00:59

            Context: I am training a very similar model per bigquery dataset in Google Vertex AI, but I want to have a custom training image for each existing dataset (in Google BigQuery). In that sense, I need to programatically build a custom Docker Image in the container registry on demand. My idea was to have a Google Cloud Function do it, being triggered by PubSub topic with information regarding which dataset I want to build the training container for. So naturally, the function will write the Dockerfile and pertinent scripts to a /tmp folder within Cloud Functions (the only writable place as per my knowledge). However, when I try to actually build the container within this script, apparently, it doesn't find the /tmp folder or its contents, even though they are there (checked with logging operations).

            The troubling code so far:



            Answered 2021-Dec-21 at 11:07

            I've locally tested building a container image using Cloud Build Client Python library. It turns out to have the same error even the Dockerfile file is existing in current directory:


            Step #0: unable to prepare context: unable to evaluate symlinks in Dockerfile path: lstat /workspace/Dockerfile: no such file or directory

            build steps:



            How to stop and start a PubSub programatically through the MessageReceiver in Java
            Asked 2021-Dec-01 at 12:51

            Is it possible to pause and start a GCP PubSub Subscriber(pull) programatically using Java?

            I have the following code for the MessageReceiver:



            Answered 2021-Nov-30 at 15:06

            You need to return the same subscriber object to start and stop it:

            check some google examples here.

            here is a sketch (adapt for your class):



            creating dataproc cluster with multiple jars
            Asked 2021-Nov-27 at 22:40

            I am trying to create a dataproc cluster that will connect dataproc to pubsub. I need to add multiple jars on cluster creation in the spark.jars flag



            Answered 2021-Nov-27 at 22:40

            The answer you linked is the correct way to do it: How can I include additional jars when starting a Google DataProc cluster to use with Jupyter notebooks?

            If you also post the command you tried with the escaping syntax and the resulting error message then others could more easily verify what you did wrong. It looks like you're specifying an additional spark property in addition to your list of jars spark:spark.driver.memory=3000m, and tried to just space-separate that from your jars flag, which isn't allowed.

            Per the linked result, you'd need to use the newly assigned separator character to separate the second spark property:


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


            No vulnerabilities reported

            Install pubsub

            You can download it from GitHub.
            You can use pubsub 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 pubsub 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 For Gradle installation, please refer .


            Mycila Event is a new powerful event framework for in-memory event management. It has a lot of features similar to EventBus but is better designed, uses Java Concurrency features and has a lot of more event features than EventBus, which are really useful when you work with a complex system driven by event messaging.
            Find more information at:

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            gh repo clone mycila/pubsub

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