DevDay: Creating an Awesome Developer Experience for Corda, Web3 Labs
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Web3j Corda aims to simplify Corda application development. It allows developers to create a new Corda project, generate CorDapp client wrappers, and start a network and deploy flows with just three commands. This greatly simplifies the Corda developer workflow by automating many common tasks like project setup, contract and flow creation, client generation, and network deployment. The goal is to create a better developer experience for building Corda applications.
![Network queries
web3labs.com@web3labs
val partyA = corda.api.network.nodes
.findByX500Name("O=PartyA,L=New York,C=US")[0]
.legalIdentities[0]
val partyB = corda.api.network.nodes
.findByHostAndPort("http://party-new-york-us:8080")
.legalIdentities[0]](https://image.slidesharecdn.com/14-191106154213/85/DevDay-Creating-an-Awesome-Developer-Experience-for-Corda-Web3-Labs-18-320.jpg)
DevDay: Creating an Awesome Developer Experience for Corda, Web3 Labs
- 1. Creating an Awesome Developer Experience for Corda Conor Svensson and Puneetha Karamsetty web3labs.com@web3labs
- 2. Web3 Labs @web3labs Epirus Blockchain Explorer Web3j SDK web3labs.com
- 3. What is Web3j? JVM integration library for Blockchains • Java/Android/Kotlin/Scala, etc Account and transaction management Type-safe smart contract integration Native build tool integration • Maven/Gradle web3labs.com@web3labs
- 4. 🎂 Web3j is 3! 🎂 > 100 contributors > 900 forks > 400k downloads (>2m all artefacts) > 2.5k GitHub stars web3labs.com@web3labs
- 7. Web3j Corda web3labs.com@web3labs Creating a great developer experience for Corda Simplify integration with CordApps Uses Corda’s OpenAPI connector Simple template CorDapp creation Powerful integration testing capabilities
- 8. Developer adoption challenges Corda JVM developer workflow Create project Add Corda build dependencies Create contracts + workflows Create CorDapp client Start network Deploy CorDapp Run CorDapp 🙏 🙏 🙏 🙏 web3labs.com@web3labs
- 9. How can we simplify this? web3labs.com@web3labs
- 11. Installation curl -L https://getcorda.web3j.io | bash web3labs.com@web3labs
- 12. Create a new project web3j-corda new … web3labs.com@web3labs
- 13. Or, generate CorDapp client wrappers web3j-corda generate … web3labs.com@web3labs
- 14. Start network + deploy flow ./gradlew test web3labs.com@web3labs
- 17. Create Web3j Corda service web3labs.com@web3labs val service = CordaService("http://partyb-london-gb:8080") val corda = Corda.build(service)
- 18. Network queries web3labs.com@web3labs val partyA = corda.api.network.nodes .findByX500Name("O=PartyA,L=New York,C=US")[0] .legalIdentities[0] val partyB = corda.api.network.nodes .findByHostAndPort("http://party-new-york-us:8080") .legalIdentities[0]
- 19. Starting a flow web3labs.com@web3labs val signedTx = Obligation .load(corda.service) .flows .issueObligationInitiator .start( IssueObligation_InitiatorPayload( AmountCurrency(100, BigDecimal.ONE, "GBP"), partyB, false ) )
- 20. Web3j Corda web3j-corda new|generate ✓ Create project ✓ Add web3j-corda build dependency ✓ Create contracts + workflows ✓ Auto-generate CorDapp client + test ✓ Create full dockerized network w/map service ✓ Deploy + run CorDapp + start flows 🔥 🔥 🔥 web3labs.com@web3labs
- 21. What’s next Java code generation Vault support • Queries • Tracking Flow progress trackers Upgrading live CorDapps web3labs.com@web3labs
- 22. Thanks! curl -L https://getcorda.web3j.io | bash web3j-corda new … corda.web3j.io web3labs.com@web3labs