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Corda Insurance Application - Example by Arun

This is a project written to understand writing Corda applications. It is intended for learning purpose. It demonstrates simple insurance policy purchase and claims, transaction in the distributed ledger Corda.

This project references corda documentation and bootcamp-corda. Thanks to the contributors and developers, most part of the template project could be reused.

Set up

  1. Download and install Oracle JDK 8 JVM (minimum supported version 8u131)

  2. Download and install IntelliJ Community Edition (supported versions 2017.x and 2018.x)

  3. Download the arun-insurance repository:

    git clone https://github.com/corda/arun-insurance

  4. Open IntelliJ. From the splash screen, click Import Project, select the arun-insurance folder and click Open

  5. Select Import project from external model > Gradle > Next > Finish

  6. Click File > Project Structure… and select the Project SDK (Oracle JDK 8, 8u131+)

    i. Add a new SDK if required by clicking New… and selecting the JDK’s folder

  7. Open the Project view by clicking View > Tool Windows > Project

Running our CorDapp

Run the application with the following steps:

  • Build a test network of nodes by opening a terminal window at the root of your project and running the following command:

    • Windows: gradlew.bat deployNodesJava
    • macOS: ./gradlew deployNodesJava

  • Start the nodes by running the following command:

    • Windows: build\nodes\runnodes.bat
    • macOS: build/nodes/runnodes

  • Open the nodes are started, go to the terminal of InsuranceA (not the notary!) and run the following command to issue $100 insurance to Anil:

    flow start InsuranceIssueFlow insurer: Anil, amount: 100

  • To view the insurance policy, run the following command in their respective terminals:

    run vaultQuery contractStateType: arun_insurance.InsuranceState

Updating for offline use

  • Run the gatherDependencies Gradle task from the root of the project to gather all the CorDapp's dependencies in lib/dependencies
  • Update gradle/wrapper/gradle-wrapper.properties to point to a local Gradle distribution (e.g. distributionUrl=gradle-4.4.1-all.zip)
  • In build.gradle, under both repositories blocks, comment out any repositories other than flatDir { ... }