eventhub | high performance pub/sub over WebSocket | Pub Sub library

 by   olesku C++ Version: v1.1.0 License: MIT

kandi X-RAY | eventhub Summary

kandi X-RAY | eventhub Summary

eventhub is a C++ library typically used in Messaging, Pub Sub, React applications. eventhub has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Eventhub is a pub/sub over WebSocket server written in modern C++. It implements the publish-subscribe pattern and concept of topics. The key focus of the project is to deliver high performance and ease of integration.
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            kandi-support Support

              eventhub has a low active ecosystem.
              It has 50 star(s) with 8 fork(s). There are 5 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 1 open issues and 4 have been closed. On average issues are closed in 3 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of eventhub is v1.1.0

            kandi-Quality Quality

              eventhub has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              eventhub is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              eventhub releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

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            eventhub Key Features

            No Key Features are available at this moment for eventhub.

            eventhub Examples and Code Snippets

            Running the server,Building yourself
            C++dot img1Lines of Code : 5dot img1License : Permissive (MIT)
            copy iconCopy
            git clone git@github.com:olesku/eventhub.git && \
            mkdir build && \
            cd build && \
            cmake -GNinja -DSKIP_TESTS=1 .. && \
            ninja
              
            Concepts,Authentication
            C++dot img2Lines of Code : 5dot img2License : Permissive (MIT)
            copy iconCopy
            {
              "sub": "user@domain.com",
              "read": [ "topic/#", "topic2/#" ],
              "write": [ "topic1/#" ]
            }
              
            Running the server,Docker
            C++dot img3Lines of Code : 1dot img3License : Permissive (MIT)
            copy iconCopy
            docker run --rm -e disable_auth=1 -e redis_host=my-redis-server.local -p 8080:8080 quay.io/olesku/eventhub:latest
              

            Community Discussions

            QUESTION

            PIP Install uamqp on a RaspberryPi
            Asked 2022-Mar-24 at 01:41

            I'm having problems trying to install the package azure-eventhub on a Docker container running on a RaspberryPi using the image python:3.10.1-buster. The issue (as far as I can see) isn't with the azure-eventhub package however but one of the dependencies uamqp.

            My Dockerfile (part of it) looks like this:

            ...

            ANSWER

            Answered 2022-Jan-17 at 11:32

            In the error message, we can see

            Source https://stackoverflow.com/questions/70740082

            QUESTION

            Azure Stream Analytics to Event Hub batching not putting events in a list
            Asked 2022-Feb-18 at 22:41

            I currently have a ASA Job that is streaming to an eventhub. From what I understand it may combine events from my query into batches for throughput reasons. However, when I check my output eventhub using service bus explorer, my events are not kept in a list like this:

            ...

            ANSWER

            Answered 2022-Feb-18 at 22:41

            The setting you are looking for is Format in the EH output configration. You should switch it from line separated to array.

            Pasting the doc here:

            Format : Applicable only for JSON serialization. Line separated specifies that the output is formatted by having each JSON object separated by a new line. If you select Line separated, the JSON is read one object at a time. The whole content by itself would not be a valid JSON. Array specifies that the output is formatted as an array of JSON objects.

            This is line separated:

            Source https://stackoverflow.com/questions/71137593

            QUESTION

            Azure Portal Function Error: Update your NuGet package reference for Microsoft.Azure.WebJobs.Extensions.EventHubs
            Asked 2022-Feb-05 at 18:10

            I've been trying to fix this since yesterday but have done more damage than good. I have a function app (written in JS) in the Azure Portal. All was working well until two days ago when I received the below error. I've seen a few bits online saying the fix is to update the reference however I'm not really sure where I should update the reference to NuGet package. In my function app's code I have both a js file and the json file but I don't know where the NuGet package comes in. Apologies if this is trivial I'm still learning but would really like to understand what's going on here. For reference I'm on a Mac and have been working off VS code.

            Microsoft.Azure.WebJobs.Script: One or more loaded extensions do not meet the minimum requirements. For more information see https://aka.ms/func-min-extension-versions.

            ExtensionStartupType EventHubsWebJobsStartup from assembly 'Microsoft.Azure.WebJobs.EventHubs, Version=4.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not meet the required minimum version of 4.3.0.0. Update your NuGet package reference for Microsoft.Azure.WebJobs.Extensions.EventHubs to 4.3.0 or later.

            ...

            ANSWER

            Answered 2022-Feb-04 at 13:58

            In host.json, use the latest 3.x extension bundle:

            Source https://stackoverflow.com/questions/70985641

            QUESTION

            The listener for function 'IotHubTrigger' was unable to start. IoTHub
            Asked 2022-Jan-24 at 14:13

            I've been working on a azure functions project for almost a year now. Suddenly last week i started to get this error message from my IoTHubTrigger:

            The listener for function 'IotHubTrigger' was unable to start. Microsoft.Azure.EventHubs.Processor: Out of retries creating lease for partition 0. Microsoft.WindowsAzure.Storage: The response ended prematurely, with at least 158 additional bytes expected. System.Net.Http: The response ended prematurely, with at least 158 additional bytes expected.

            Have not found anywhere where someone has the same problem as this, someone who knows what the error is due to? The only major change the last weeks is that i went from VS 2019 to VS 2022, can it be that?

            Also added "AzureWebJobsSecretStorageType": "files", to the local.settings.json file.

            I'm thankful for any kind of help with this! Cheers!

            ...

            ANSWER

            Answered 2022-Jan-24 at 14:13

            I managed to solve the problem, in AzureStorageExplorer under local/Emulator/blobcontainer/azure-webjobs-eventhub & host, removed everything that had to do with iothub/eventhub, and did a restart on the computer and boom so it started to work again.

            Thanks to the people who left a comment!

            Source https://stackoverflow.com/questions/70738340

            QUESTION

            Dynamic destination in Spring Cloud Stream from Azure Event Hub to Kafka
            Asked 2022-Jan-21 at 17:07

            I'm trying to use Spring Cloud Stream to process messages sent to an Azure Event Hub instance. Those messages should be routed to a tenant-specific topic determined at runtime, based on message content, on a Kafka cluster. For development purposes, I'm running Kafka locally via Docker. I've done some research about bindings not known at configuration time and have found that dynamic destination resolution might be exactly what I need for this scenario.

            However, the only way to get my solution working is to use StreamBridge. I would rather use the dynamic destination header spring.cloud.stream.sendto.destination, in that way the processor could be written as a Function<> instead of a Consumer<> (it is not properly a sink). The main concern about this approach is that, since the final solution will be deployed with Spring Data Flow, I'm afraid I will have troubles configuring the streams if using StreamBridge.

            Moving on to the code, this is the processor function, I stripped away the unrelated parts

            ...

            ANSWER

            Answered 2022-Jan-20 at 21:56

            Not sure what exactly is causing the issues you have. I just created a basic sample app demonstrating the sendto.destination header and verified that the app works as expected. It is a multi-binder application with two Kafka clusters connected. The function will consume from the first cluster and then using the sendto header, produce the output to the second cluster. Compare the code/config in this sample with your app and see what is missing.

            I see references to StreamBridge in the stacktrace you shared. However, when using the sendto.destination header, it shouldn't go through StreamBridge.

            Source https://stackoverflow.com/questions/70785204

            QUESTION

            Running a function for every batch of Pyspark sctructred stream without UDF
            Asked 2021-Dec-29 at 09:14

            I have to run the following Pyspark code. I am reading from eventhub, transforming the data using multiple functions (dataframe transformation) and writing the dataframe to a directory. The update_session_id function has to run for each batch, but it is not working on the data from eventhub. It just has to update a lookup table which is referenced in the transform_raw_data function, if the current_timestamp is greater than the 2 hours from the timestamp maintained in the lookup table.

            How can I implement this? Currently, the update_session_id function just executes once and then doesn't execute through out the lifetime of the stream.

            ...

            ANSWER

            Answered 2021-Dec-29 at 09:14

            You can achieve this using the foreachBatch function that will be executed for each microbatch. In your case it could look as following:

            Source https://stackoverflow.com/questions/70511437

            QUESTION

            How to write custom dataframe to eventhub from ADLS
            Asked 2021-Dec-16 at 08:41

            I would like to write custom data frame to eventhub.

            ...

            ANSWER

            Answered 2021-Dec-16 at 08:41

            You need to transform data in your dataframe into a single column object - either binary or string - it's really depends on your consumers. The simplest way to do that is to pack all data as JSON, using the combination of to_json + struct functions:

            Source https://stackoverflow.com/questions/70375424

            QUESTION

            Sending events to event hub from APIM result in unauthorized when using managed identity
            Asked 2021-Dec-06 at 14:02

            I am attempting to setup an APIM endpoint that sends messages to an event hub. I also want to use managed identities in order to authorize the APIM with the event hub. Note that all resources lie in the same subscription. The setup is as follows:

            • I have an APIM instance with a system assigned identity. This identity has been giving the contributor role on a subscription level.
            • I have an event hub namespace and event hub, which is setup to receive the events.
            • I have created an API + operation, that generates events, based on the payload and sends them to the event hub. The example below just sends some hardcoded body, I want to get it working before working on the payload.

            The policy for the operation looks like this:

            ...

            ANSWER

            Answered 2021-Dec-06 at 14:02

            the app already has contributor rights for the subscription. Does it need anything else?

            Yes; The "Contributor" role gives the app access to the Azure resource management plane for operations like creating a new Event Hub but does not grant access for the data plane.

            The app will need to have either "Event Hubs Data sender" or "Event Hubs Data owner" role in order to publish events. (see: Authorize access to Event Hubs resources using Azure Active Directory for more context)

            Source https://stackoverflow.com/questions/70245670

            QUESTION

            Can't install Azure packages with pip: ruamel.yaml error
            Asked 2021-Nov-27 at 17:57

            I'm having trouble installing the following packages in a new python 3.9.7 virtual environment on Arch Linux.

            My requirements.txt file:

            ...

            ANSWER

            Answered 2021-Nov-27 at 17:57

            The ruamel.yaml documentation states that it should be installed using:

            Source https://stackoverflow.com/questions/70136750

            QUESTION

            Azure C2D message for MQTT device to subscribe to
            Asked 2021-Nov-22 at 14:47

            I have successfully connected two actual devices to Azure IoTHub (in the same Iot Hub) and would like the second device to receive the message that the first device sends. So, in a normal MQTT broker the second device just subscribes to that topic but Azure does not have a normal MQTT broker.

            What I am now trying to do is write an Azure function that triggers every time a message from the first device is received in IoTHub through the Event Hub Trigger; and sends a C2D message with the received message (string) to the second device. To achieve that the second device subscribes to this topic: devices/secondDevice/messages/devicebound

            Here is my function

            ...

            ANSWER

            Answered 2021-Nov-22 at 14:47

            The second device should subscribe with a topic filter of # as per the docs. So the topic will become:

            Source https://stackoverflow.com/questions/70064075

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

            Vulnerabilities

            No vulnerabilities reported

            Install eventhub

            You can download it from GitHub.

            Support

            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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            CLONE
          • HTTPS

            https://github.com/olesku/eventhub.git

          • CLI

            gh repo clone olesku/eventhub

          • sshUrl

            git@github.com:olesku/eventhub.git

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