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https://github.com/yuriytkach/stream-3-31-demo-app
Demo application for online YouTube stream #3 (#31)
https://github.com/yuriytkach/stream-3-31-demo-app
blockchain demo-app ethereum smart-contracts truffle youtube-stream
Last synced: about 1 month ago
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Demo application for online YouTube stream #3 (#31)
- Host: GitHub
- URL: https://github.com/yuriytkach/stream-3-31-demo-app
- Owner: yuriytkach
- Created: 2023-02-26T10:50:16.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-02-26T20:40:04.000Z (almost 2 years ago)
- Last Synced: 2024-04-20T00:42:03.513Z (9 months ago)
- Topics: blockchain, demo-app, ethereum, smart-contracts, truffle, youtube-stream
- Language: JavaScript
- Homepage:
- Size: 61.5 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Demo Project for Online Stream #3 and #4 (#31 and #32) - Smart contract deployment into test blockchain
Demo project for online stream #3 and #4 of blockchain course (#31 and #32 of total streams) about using Truffle to compile and deploy smart contracts
to Ganache - a testing in-memory blockchain.
Stream #4 added ability to compile smart-contract and create Java wrappers with web3j library.
## Access to Online Stream on YouTube
To get a link to online stream on YouTube please do the following:
- :moneybag: Make any donation to support my volunteering initiative to help Ukrainian Armed Forces by means described on [my website](https://www.yuriytkach.com/volunteer)
- :email: Write me an [email](mailto:[email protected]) indicating donation amount and time
- :tv: I will reply with the link to the stream on YouTube.
Thank you in advance for your support! Слава Україні! :ukraine:
## Running the Demo
Follow the guides provided below to install Truffle with nodejs.
Then compile contracts using:
```shell
truffle compile
```
Then run develop blockchain ganache using:
```shell
truffle develop
```
Inside the truffle prompt run `migrate` command to deploy your smart contracts:
```shell
truffle(develop)> migrate
```
The output should be similar to the following:
```text
Starting migrations...
======================
> Network name: 'develop'
> Network id: 5777
> Block gas limit: 6721975 (0x6691b7)
1_deploy_contracts.js
=====================
Replacing 'FundraiserFactory'
-----------------------------
> transaction hash: 0x990b453dc625e42fe22ffc5be9a590cd17ff69de3534351ba8e4a5c0fcbcd6fd
> Blocks: 0 Seconds: 0
> contract address: 0x73270D0B84511cb30dEfAB0AB1AbbBCC91328D42
> block number: 1
> block timestamp: 1677408127
> account: 0x4489287Eb3823d05a1DaF86bD61EF4899588aB99
> balance: 99.995544085375
> gas used: 1320271 (0x14254f)
> gas price: 3.375 gwei
> value sent: 0 ETH
> total cost: 0.004455914625 ETH
> Saving artifacts
-------------------------------------
> Total cost: 0.004455914625 ETH
Summary
=======
> Total deployments: 1
> Final cost: 0.004455914625 ETH
```
Take a note of the `contract address` of the `FundraiserFactory` contract. Use it to call method to create `Fundraiser`.
For this use can use the online IDE [Remix](https://remix.ethereum.org/).
### Compile Java Wrappers
To compine Java code wrappers for smart contracts and create jar with them use:
```shell
./gradlew jar
```
### Reference Documentation
For further reference, please consider the following sections:
* [Truffle Installation Guide](https://trufflesuite.com/docs/truffle/how-to/install/)
* [Truffle Quickstart Guide](https://trufflesuite.com/docs/truffle/quickstart/)
* [Truffle Tutorial for Simple DApp](https://trufflesuite.com/guides/pet-shop/)
* [Ganache](https://trufflesuite.com/docs/ganache/)
* [Ethereum Official Documentation](https://ethereum.org/uk/developers/docs/intro-to-ethereum/)
* [Web3j Quickstart](https://docs.web3j.io/4.8.7/quickstart/)