EventHub | An open source event analytics platform | Analytics library
kandi X-RAY | EventHub Summary
kandi X-RAY | EventHub Summary
EventHub enables companies to do cross device event tracking. Events are joined by their associated user on EventHub and can be visualized by the built-in dashboard to answer the following common business questions. Most important of all, EventHub is free and open source.
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Top functions reviewed by kandi - BETA
- Executes the given request
- Iterates through the given user ID and returns the event ids for each event
- Returns the offset for the given event with the given event id
- Get number of events in funnel
- Registers a user in the database
- Adds an object to the buffer
- Calculate the hash buckets
- The main method
- Closes the event storage
- Create an event hub handler
- Add event to log
- Updates the database
- Create a visitor for bloom filter events
- Create an id map
- Returns a VisitorVisitor for the given userId
- Update a user
- Gets the Gson
- Create sharded event index
- Gets a user for the given external user id
- Handle a callback
- Handle the request
- Provides a Factory Factory to create the BlockFactory
- Entry point for testing
- Builds a ByteBuffer from a Map
- Provide event index factory
- Process the events
EventHub Key Features
EventHub Examples and Code Snippets
Community Discussions
Trending Discussions on EventHub
QUESTION
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 11:32In the error message, we can see
QUESTION
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 22:41The 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:
QUESTION
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 13:58In host.json, use the latest 3.x extension bundle:
QUESTION
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 14:13I 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!
QUESTION
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 21:56Not 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
.
QUESTION
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 09:14You can achieve this using the foreachBatch function that will be executed for each microbatch. In your case it could look as following:
QUESTION
I would like to write custom data frame to eventhub.
...ANSWER
Answered 2021-Dec-16 at 08:41You 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:
QUESTION
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 14:02the 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)
QUESTION
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 17:57The ruamel.yaml
documentation states that it should be installed using:
QUESTION
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 14:47The second device should subscribe with a topic filter of #
as per the docs. So the topic will become:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install EventHub
You can use EventHub 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 EventHub 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 .
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