Pega Laptops & Desktops Driver Download

  1. Pega Laptops & Desktops Driver Downloads
  2. Pega Laptops & Desktops Driver Download

PEGA-BP500 CLIE Battery Pack overview and full product specs on CNET. Pega delivers innovative software that crushes business complexity. From maximizing customer lifetime value to streamlining service to boosting efficiency, we help the world’s leading brands solve problems fast and transform for tomorrow. Pega clients make better decisions and get work done with real-time AI and intelligent automation.

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Introduction

In the previous post we saw how Pega can consume message from an external Kafka server. In this post we will see how Pega can produce the Kafka messages to an external Kafka server.

Business scenario

A banking organization ABC uses Pega infinity to facilitate their sales process.

  • Whenever a loan is issued, loan details are captured in a Pega application that maintains the loan life cycle. .

Business problem

Whenever a loan is fully settled, the loan status is updated in the golden source system ( Pega application) but the changes need to be propagated to all systems that use the loan status to make them up-to-date.

Solution

Kafka is chosen as the messaging platform. Whenever the loan expires, the Pega application produces loan status message to a dedicated topic. Other applications can register themselves as one of the consumers and consume the loan status change messages.

Let’s see how we can implement the scenario in Pega.

In the tutorial, we will see how this can be achieved using the>

  • Please follow the below post to set up connection between Pega and an external kafka server.
  • 2. A Loan processing case type if created with a simple UI to capture the Loan number and loan status.

    Okay pre-requisites are ready 🙂

    Configure Kafka data set in Pega

    Step 1: Create the data model for your Kafka Integration.

    Note: I am using the same data model as I used for consuming the Kafka Message

    Step 1.1: Create an Integration class in the Ent Layer

    <Org>-Int-Kafka-<TopicName>

    OW3HD2-Int-Kafka-LoanStatusChange

    Step 1.2: Create two single value properties for Loan number and loan status.

    Step 2: Create a new Kafka data set rule – LoanStatusChangeEvent

    There is a single main tab – Kafka, where you do all the main configurations.

    Connections –

    Here you can select the right Kafka instance rule – LocalKafka

    You can do a test connectivity to verify the connection.

    Topic –

    Here you can either create a new topic or select any existing topic. In our scenario, we will try creating a new topic on the fly.

    Partition keys –

    In the Kafka introduction posts, we saw the importance of Partition keys. We know that each Kafka topic can have one or more partitions to store the messages and the message ordering is guaranteed only within each partition.

    If you have such use case where your ordering plays a critical role, for example: tracking your cab, you must specify a key, say – cabID, so that all messages for same cab goes to same partition, so the geolocation ordering is maintained for the cab.

    In our use case, the consumers wanted to track the order of loan status for each loan number. So as a producer, we are responsible to produce the messages corresponding to same number under same partition.

    So my Partition key is LoanNumber.

    Record format –

    Here we have JSON as the default format and also we have an option to use custom format.

    Based on the format, serialization and deserialization occurs.

    You can look at the below links for custom serde(serialization and deserialization) implementation

    Here in our use case, we will keep it simple and use JSON format.

    Save the data set rule. Now just run the data set rule (we know that we haven’t produced any messages yet), you will see the new topic auto-created in the Kafka server.

    You see a new topic is created with only one partition!! Why?!!

    Because the default configuration is set as 1 in the server.properties file.

    Shall we increase the partitions in existing topic? – Though it is not recommended, we can using alter kafka topic command. I am increasing the partition count to 5.

    Driver

    kafka-topics –alter –topic LoanStatusChangeEvent –partitions 5 –zookeeper 127.0.0.1:2181

    Now let’s start producing Kafka messages from Pega.

    How to produce / publish Kafka message from Pega? – Using DataSet-Execute method from an activity rule.

    Step 1: Create a new Utility type activity in work class

    Step 2: Create a new Integration page – EventPage and set the work level values to Int level properties.

    Step 3: Add a Save operation Dataset-Execute method.

    Important note: Make sure step primary page contains the data or JSON attributes to be published.

    Select the right data set name and set the Operation to Save.

    Now a question, Can we publish more than one message with the DataSet-Execute method? – Yes of course it is possible.

    There is a checkbox Save list of pages defined, there you can specify a page list property and publish the list of page messages to Kafka. We will see this at the end.

    For now, we will publish one to one message publishing.

    Step 4: Call the publishing utility in the flow rule following the assignment shape that captures the loan status.

    Now it is time to test 🙂

    Step 1: Create a new Loan processing case.

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    Step 2: Capture the Loan number and Loan status.

    Click Submit button.

    Now to check if the messages are published or not, we can manually run the data set rule to browse the messages.

    You see the recently published messages occupy the Partition 1. (The other 3 messages are published by me for testing purposes :))

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    Let’s finish this tutorial by publishing 2 messages from a Page list and see if it goes to same Partition.

    Step 1: Update the activity step 2, to add two results in EventsPage of Code-Pega-List class.

    Note: For now I am hardcoding the messages, In real time it can be browse results or report definition results.

    Step 2: In the DataSet-Execute method, use the EventPage.pxResults pagelist property.

    Step 3: Now run the activity manually to publish the messages.

    Step 4: Run and browse the Data set rule to verify if the new messages are published to the external Kafka topic.

    You see the third message occupies the same Partition 1, because LoanNumber is used as Partition key and is ordered as 3rd message position (0,1,2)

    As a summary,

    • Use a Kafka data instance to make a connection between Pega and external kafka server.
    • Create a new kafka data set rule and specify the server details. In the Kafka data set rule, you can also decide to either use existing topic and create new topic on the fly.
    • You can specify partition key that supports ordering of messages for particular entities like same Loan number.
    • Use DataSet-Execute method to publish Kafka message from an activity rule.
    • You can also publish more than one dataset using pagelist properties.

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    Hope you all find these Kafka series posts helpful. I will come up with a new post series soon 🙂

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