Goals
Hyperledger Iroha v2 aims to be an even more simple, highly performant distributed ledger platform than Iroha v1. V2 carries on the tradition of putting on emphasis on having a library of pre-defined smart contracts in the core, so that developers do not have to write their own code to perform many tasks related to digital identity and asset management.
Background and strategic fit
Assumptions
- Users will work with provided client libraries (iOS, Android, JS).
- 3f+1 nodes enough to tolerate f Byzantine nodes in the network.
- Iroha uses a simple data model made up of domains, peers, accounts, assets, signatories, and permissions, as shown in the figure below - all other entities are build on top of these set.
Requirements
| # | Title | User Story | Importance | Notes |
|---|---|---|---|---|
| 1 | Transfer Assets | Account owner able to transfer assets to other accounts | MUST |
|
| 2 | Peer to Peer Network | MUST |
| |
| 3 | Smart Contracts | https://soramitsucoltd.aha.io/features/HI2-29 | MUST |
|
| 4 | Storage | https://soramitsucoltd.aha.io/features/HI2-1 | MUST |
|
| 5 | Permissions | https://soramitsucoltd.aha.io/features/HI2-36 | MUST |
|
| 6 | Event Listeners | https://soramitsucoltd.aha.io/features/HI2-37 | COULD | |
| 7 | Maintenance Endpoint | MUST | Maintenance Endpoint | |
| 8 | Transactions TTL | MUST |
|
User interaction and design
Iroha application crate
.
├── Cargo.toml
├── config.json
├── docs
│ └── references
└── src
├── account.rs
├── asset.rs
├── block.rs
├── config.rs
├── crypto.rs
├── domain.rs
├── isi.rs
├── kura.rs
├── lib.rs
├── main.rs
├── merkle.rs
├── peer.rs
├── query.rs
├── queue.rs
├── sumeragi.rs
├── torii.rs
├── tx.rs
└── wsv.rs
Network crate
.
├── Cargo.toml
└── src
└── lib.rs
Macroses
.
├── Cargo.toml
├── iroha_derive
│ ├── Cargo.toml
│ ├── src
│ │ └── lib.rs
│ └── tests
│ ├── log.rs
│ └── serialize.rs
└── src
└── lib.rs
Iroha clients
Iroha Rust Client
.
├── benches
│ └── torii.rs
├── Cargo.toml
├── config.json
├── src
│ ├── client.rs
│ └── lib.rs
├── target
│ └── criterion
└── tests
├── add_asset.rs
├── high_load_transfer.rs
└── transfer_asset.rs
Non functional requirements
Questions
Below is a list of questions to be addressed as a result of this requirements document:
| Question | Outcome |
|---|---|