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Introduction

BigBank (download) demonstrates a complete distributed, multi-cluster loan processing distributed online banking application. BigBank is organized into several architectural tiers:

  • A loan service responsible that receives and processes loan applications over multiple transports, including Web Services (WS-*), REST/HTTP, and file-system messages.
  • A back-end rating system responsible for performing credit checks and application scoring.
  • A database for persisting loan application data.
  • Client applications that remotely connect to the loan service and submit applications.

BigBank can be deployed to the single-VM runtime used for the starter examples or to the cluster topology that is configured under servers/cluster. In either case, application configuration remains the same.

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  • modern API tier that exposes REST services for account balance, financing (loans), and payments.
  • A backend tier that simulates legacy services accessed vis Web Services (WS-*) and JMS.
  • A high-performance, event-driven fraud detection subsystem built using ZeroMQ.

Getting Setup

To build and deploy BigBank to the single-VM server, do the following:

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1. Build the BigBank source

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To build BigBank, go to apps/bigbank/bigbank_loan and execute: mvn clean install
.

The build will produce the bigbank-loan-<version>.jar archive containing the loan services.

Start the server.

Build the single-VM Fabric3 runtime in /servers/vm by executing:

mvn clean install
runtime images in /servers.

2. Start the servers

When the build has completed, boot the Fabric3 runtime from the servers/server-backend/vmtarget/image/bin directory by executing:

java -jar server.jar



Alternatively, the server can be started by providing the path to the seerverserver.jar archive  archive relative to the current directory. e.g.:

java -jar target/image/bin/server.jar

Deploy the archives.

Copy bigbank-loan-<version>.jar to the severs/vm/ 

Next, boot  the Fabric3 runtime from the servers/server-frontend/target/image/runtimes/vm/deploy directory. bin. 

3. Run the clients

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From your IDE, launch one of the client clients located in bigbank-client src/main/java/org/fabric3/samples/bigbank/client. The client will submit a loan application an wait for it to be processed. The next section explains the BigBank application architecture in detail.the client module.