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UTILS2 - Payment Initiation Simulator

This document covers how to use the payment initiation simulator. There are two recommended approaches for the tutorial, both docker and non-docker. Let’s look at these:

Using the Application Through Docker

Below provides a simple docker file entry for the payment initiation simulator:

  payment-initiation-simulator-kafka:
    image: registry.ipf.iconsolutions.com/sample-systems-payment-initiation-simulator-kafka:2.0.101
    container_name: payment-initiation-simulator-kafka
    ports:
      - "8082:55555"
    volumes:
      - ./config/payment-initiation-simulator-kafka:/payment-initiation-simulator-kafka/conf
    user: "${UID:-1000}:${GID:-1000}"
    depends_on:
      - kafka

In addition, the application will need configuration which is placed in the "application.conf" file within a config directory relative to the above docker entry. The conf file contains:

common-kafka-client-settings {
  bootstrap.servers = "kafka:9092"
}

connector {
default-receive-connector {
manual-start: true
}

  default-send-connector {
    manual-start = false
    call-timeout = 30s
    queue-size = 50
    max-concurrent-offers = 500
    resiliency-settings {
      minimum-number-of-calls = 1
      max-attempts = 1
      reset-timeout = 1s
      initial-retry-wait-duration = 1s
      backoff-multiplier = 2
    }
  }

  validator-error-handler-dispatcher {
    type = Dispatcher
    executor = "thread-pool-executor"
    thread-pool-executor {
      fixed-pool-size = 4
    }
  }
}

akka.kafka {
producer {
kafka-clients = ${common-kafka-client-settings}
}
consumer {
kafka-clients = ${common-kafka-client-settings}
}
}

When executed the ipf-developer-app will listen for data on port 8082. This port will also be exposed to the host machine. The logs will be exported to logs/ipf-developer.app-log relative to the docker file.

Using the Application Without Docker

Prerequisites

To run this simulator requires:

  • A Java 17 runtime

  • A Kafka environment that either has:

  • Auto topic creation enabled

  • Topics created for PAYMENT_INITIATION_REQUEST and PAYMENT_INITIATION_RESPONSE

Configuration Options

Property

Description

Default Value

common-kafka-client-settings.bootstrap.servers

Defines the server bootstrap settings for kafka.

localhost:9092

server.port

Defines the port the application will run on

8082

Download

The payment initiation simulator is available here:

nexus.ipf.iconsolutions.com/repository/ipf-releases/com/iconsolutions/ipf/sample/samplesystems/payment-initiation-simulator-kafka/2.0.101/payment-initiation-simulator-kafka-2.0.101-runnable.jar

Running

Once downloaded, place it into this directory and run:

java -cp "payment-initiation-simulator-kafka-2.0.101-runnable.jar:config" -D"loader.main"="com.iconsolutions.samplesystems.paymentinitiation.simulator.PaymentInitiationSimulatorKafkaApplication" "org.springframework.boot.loader.launch.PropertiesLauncher"

The application will then start and be available from:

localhost:55555/index.html

Note that on Windows, the colon in the run command should be replaced by a semicolon.