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IBM/loadtesting-the-Blockchain-Network

Name: loadtesting-the-Blockchain-Network

Owner: International Business Machines

Description: Run a java program to load test a blockchain network.

Created: 2018-03-26 21:06:34.0

Updated: 2018-05-22 06:56:06.0

Pushed: 2018-05-02 20:06:08.0

Homepage: https://developer.ibm.com/code/patterns/load-test-your-blockchain-network/

Size: 70

Language: Java

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README

Load testing the Blockchain Network

This pattern is continuation of the Leveraging cache and MessagingQueue to scale Blockchain Network . In this pattern, we are going run java programs to load test our blockchain network i.e. to send request to blockchain network and to check for results of request execution. MongoDb is used to keep track of statistics for the load testing.

Included Components

Hyperledger Fabric
Docker
Hyperledger Fabric SDK for node.js
Mongodb
Java

Application Workflow Diagram

Application Workflow

Run the ExecutionApp and ResultGenerator java program in separate terminals
View the execution results in mongodb

Prerequisites

Maven

Steps

Set-up the blockchain network.
You can either install mongodb on your system or run the container for mongodb using the following command.
```
er run -p 27017:27017 -d mongo
```
Issue a git clone https://github.com/IBM/loadtesting-the-Blockchain-Network.git
Verify the executionURL, resultURL urls from ExecutionApp.java and ResultGenerator.java.
Make sure your are connecting to correct mongodb instance and dbName are same in ExecutionApp.java and ResultGenerator.java.
Open terminal and run the following commands to setup the project
```
compile
```

Now run the test result loader Application

exec:java -Dexec.mainClass="secretApp.testApp.ResultGenerator"

In a new terminal,run the execution cli app

exec:java -Dexec.mainClass="secretApp.testApp.ExecutionApp"

If required, you can scale the number of task execution containers by navigating back to the network directory and running the following command:
```
er-compose -p "fitcoin" up -d --scale fitcoin-backend=<No of containers>
```
For eg:
```
er-compose -p "fitcoin" up -d --scale fitcoin-backend=3
```

Note: To view the results you can download robomongo/ Robo 3T. Currently, ExecutionApp is configured to send enroll request for user types, query request for user state and invoke request for generating fitcoins which can be modified according to the requirements.

Additional Resources

License

Apache 2.0

This work is supported by the National Institutes of Health's National Center for Advancing Translational Sciences, Grant Number U24TR002306. This work is solely the responsibility of the creators and does not necessarily represent the official views of the National Institutes of Health.