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feat(bungee-hermes): new plugin bungee-hermes
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* refactored plugin bungee, using strategy design pattern
* current version has strategy both for fabric and besu networks
* includes a few tests to demonstrate basic functionality
* added README with package documentation
* added bungee tests to Cactus CI

Co-authored-by: eduv09 <[email protected]>
Co-authored-by: André Augusto <[email protected]>
Co-authored-by: Rafael Belchior <[email protected]>

Signed-off-by: eduv09 <[email protected]>
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eduv09 authored and petermetz committed Apr 5, 2024
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25 changes: 25 additions & 0 deletions .github/workflows/ci.yaml
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# restore-keys: |
# ${{ runner.os }}-yarn-
# - run: ./tools/ci.sh
cactus-plugin-bungee-hermes:
continue-on-error: false
env:
FULL_BUILD_DISABLED: true
JEST_TEST_RUNNER_DISABLED: false
JEST_TEST_PATTERN: packages/cactus-plugin-bungee-hermes/src/test/typescript/(unit|integration|benchmark)/.*/*.test.ts
TAPE_TEST_RUNNER_DISABLED: true
needs: build-dev
runs-on: ubuntu-22.04
steps:
- name: Use Node.js ${{ env.NODEJS_VERSION }}
uses: actions/[email protected]
with:
node-version: ${{ env.NODEJS_VERSION }}
- uses: actions/[email protected]

- id: yarn-cache
name: Restore Yarn Cache
uses: actions/[email protected]
with:
key: ${{ runner.os }}-yarn-${{ hashFiles('./yarn.lock') }}
path: ./.yarn/
restore-keys: |
${{ runner.os }}-yarn-${{ hashFiles('./yarn.lock') }}
- run: ./tools/ci.sh
cactus-test-api-client:
continue-on-error: false
env:
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1 change: 1 addition & 0 deletions CODEOWNERS
Validating CODEOWNERS rules …
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* @petermetz @takeutak @izuru0 @jagpreetsinghsasan @vramakrishna @sandeepnRES @outSH

packages/cactus-plugin-satp-hermes @RafaelAPB
packages/cactus-plugin-bungee-hermes @RafaelAPB
examples/cactus-example-cbdc-bridging @RafaelAPB
examples/cactus-example-cbdc-bridging-backend @RafaelAPB
examples/cactus-example-cbdc-bridging-frontend @RafaelAPB
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159 changes: 159 additions & 0 deletions packages/cactus-plugin-bungee-hermes/README.md
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# `@hyperledger/cactus-plugin-bungee-hermes`

The package provides `Hyperledger Cacti` a way to create blockchain snapshots and views for different distributed ledgers currently supported by Cacti. The implementation follows the paper [BUNGEE](https://dl.acm.org/doi/pdf/10.1145/3643689) (Blockchain UNifier view GEnErator).

The plugin will allow, as suggested in the paper, "new applications built on top
of dependable blockchain interoperability, such as stakeholder-centric snapshots for audits, cross-chain analysis, blockchain
migration, and combined on-chain-off-chain analytics".

## Summary

- [`@hyperledger/cactus-plugin-bungee-hermes`](#hyperledgercactus-plugin-bungee-hermes)
- [Summary](#summary)
- [Getting Started](#getting-started)
- [Prerequisites](#prerequisites)
- [Architecture](#architecture)
- [BUNGEE - Hermes API](#bungee---hermes-api)
- [Running the tests](#running-the-tests)
- [Usage](#usage)
- [Contributing](#contributing)
- [License](#license)


## Getting Started

Clone the git repository on your local machine. Follow these instructions that will get you a copy of the project up and running on
your local machine for development and testing purposes.

### Prerequisites

In the root of the project to install the dependencies execute the command:
```sh
npm run configure
```

Know how to use the following plugins of the project:

- [cactus-plugin-ledger-connector-fabric](https://github.com/hyperledger/cactus/tree/main/packages/cactus-plugin-ledger-connector-fabric)
- [cactus-plugin-ledger-connector-besu](https://github.com/hyperledger/cactus/tree/main/packages/cactus-plugin-ledger-connector-besu)


## Architecture

The plugin interacts with a cactus ledger connector, using strategies with custom logic for each different network.

Note that, so far, only strategies for Fabric and Besu networks were implemented. Smart-contracts in Fabric and Besu must implement the interface provided in the files ITraceableContract.ts and ITraceableContract.sol, in the test directory

The plugin stands _behind_ a cacti-ledger-connector, which is used to fetch information from the ledger to create the snapshot.
```typescript
.......................................
. Cacti Node .
. .
. .
. .......... ............. . .........
. . . . Cacti . . . .
. . BUNGEE . ---------- . Connector . -----------. _DLT .
. . . ............. . . .
. .......... . .........
. .
. .
. .
.......................................
```
The plugin can then serve multiple purposes, and thus serve also other plugins or apps in more complex deployment architectures (where we link bungee to other components).

### BUNGEE - Hermes API

This plugin uses OpenAPI to generate the API paths.
Endpoints exposed:

- CreateViewV1
- GetPublicKey
- GetAvailableStrategies


## Running the tests
- **besu-test-basic.test.ts**: A test using strategy-besu and a besu connector, testing creating views for different timeframes and states.
- **fabric-test-basic.test.ts**: A test using strategy-fabric and a fabric connector, testing creating views for different timeframes and states.
- **besu-test-pruning.test.ts**: A test using strategy-besu and a besu connector, testing creating views for specific timeframes.
- **fabric-test-pruning.test.ts**: A test using strategy-fabric and a fabric connector, testing creating views for specific timeframes.
- **bungee-api-test.test.ts**: A more complex test, using both besu and fabric strategies, fabric and besu connectors, and calls to bungee-hermes API. Tests bungee's API and functionality with multiple strategies.

Tests developed using JEST testing framework.

## Usage
Lets imagine we want bungee-hermes to create views for a besu ledger.
Let us consider a besu ledger connector, exposing its API on URL: http://localhost:4000


Then we instantiate the plugin as follows:
```typescript
const pluginBungeeHermesOptions = {
keyPair: Secp256k1Keys.generateKeyPairsBuffer(),
instanceId: uuidv4(),
logLevel,
};
const bungee = new PluginBungeeHermes(pluginBungeeHermesOptions);
```

We add the desired strategies:

```typescript
bungee.addStrategy('BESU_STRATEGY', new StrategyBesu("INFO"));
```

Save network details for our target ledger:

```typescript
const besuNetworkDetails: BesuNetworkDetails = {
signingCredential: besuSigningCredential,
contractName: besuContractName,
connectorApiPath: 'http://localhost:4000',
keychainId: besuKeychainPlugin.getKeychainId(),
contractAddress: besuContractAddress,
participant: accountAddress,
};
```

And we can request views, after exposing the api:
```typescript
const expressApp = express();
expressApp.use(bodyParser.json({ limit: "250mb" }));
bungeeServer = http.createServer(expressApp);
const listenOptions: IListenOptions = {
hostname: "127.0.0.1",
port: 3000,
server: bungeeServer,
};
const addressInfo = (await Servers.listen(listenOptions)) as AddressInfo;
const { address, port } = addressInfo;

await bungee.getOrCreateWebServices();
await bungee.registerWebServices(expressApp);
const bungeePath = `http://${address}:${port}`;

const config = new Configuration({ basePath: bungeePath });
const bungeeApi = new BungeeApi(config);

const viewBesu = await bungeeApi.createViewV1({
strategyId: 'BESU_STRATEGY',
networkDetails: besuNetworkDetails,
tI: undefined, //default to 0 (UNIX timestamp seconds)
tF: undefined, //default to Number.MAX_SAFE_INTEGER.toString() (UNIX timestamp seconds)
stateIds: undefined, //default to capture all assets
viewID: undefined, //plugin generates the id, if not given
} as CreateViewRequest);
```

Note that each strategy can be used to query different ledgers (ledgers of the same type, but on different locations), and BUNGEE also supports adding multiple strategies to each bungee-hermes-plugin instance.
Each strategy implements the logic to query information from each different ledger (i.e. capture set of asset states), while bungee-hermes plugin handles the snapshot and view creation.



## Contributing
We welcome contributions to Hyperledger Cactus in many forms, and there’s always plenty to do!

Please review [CONTIRBUTING.md](https://github.com/hyperledger/cactus/blob/main/CONTRIBUTING.md "CONTIRBUTING.md") to get started.

## License
This distribution is published under the Apache License Version 2.0 found in the [LICENSE ](https://github.com/hyperledger/cactus/blob/main/LICENSE "LICENSE ")file.
7 changes: 7 additions & 0 deletions packages/cactus-plugin-bungee-hermes/openapitools.json
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{
"$schema": "node_modules/@openapitools/openapi-generator-cli/config.schema.json",
"spaces": 2,
"generator-cli": {
"version": "6.6.0"
}
}
111 changes: 111 additions & 0 deletions packages/cactus-plugin-bungee-hermes/package.json
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{
"name": "@hyperledger/cactus-plugin-bungee-hermes",
"version": "2.0.0-alpha.2",
"description": "Allows Cactus nodes to create DLT views using Cactus connectors",
"keywords": [
"Hyperledger",
"Cactus",
"Integration",
"Blockchain",
"Distributed Ledger Technology",
"View"
],
"repository": {
"type": "git",
"url": "git+https://github.com/hyperledger/cacti.git"
},
"license": "Apache-2.0",
"author": {
"name": "Hyperledger Cactus Contributors",
"email": "[email protected]",
"url": "https://www.hyperledger.org/use/cacti"
},
"contributors": [
{
"name": "Eduardo Vasques",
"email": "[email protected]",
"url": "https://github.com/eduv09"
},
{
"name": "Rafael Belchior",
"email": "[email protected]",
"url": "https://rafaelapb.github.io/"
},
{
"name": "André Augusto",
"email": "[email protected]",
"url": "https://github.com/AndreAugusto11"
}
],
"main": "dist/lib/main/typescript/index.js",
"module": "dist/lib/main/typescript/index.js",
"types": "dist/lib/main/typescript/index.d.ts",
"files": [
"dist/*"
],
"scripts": {
"codegen": "run-p 'codegen:*'",
"codegen:openapi": "npm run generate-sdk",
"generate-sdk": "run-p 'generate-sdk:*'",
"generate-sdk:kotlin": "openapi-generator-cli generate -i ./src/main/json/openapi.json -g kotlin -o ./src/main/kotlin/generated/openapi/kotlin-client/ --reserved-words-mappings protected=protected --ignore-file-override ../../openapi-generator-ignore",
"generate-sdk:typescript-axios": "openapi-generator-cli generate -i ./src/main/json/openapi.json -g typescript-axios -o ./src/main/typescript/generated/openapi/typescript-axios/ --reserved-words-mappings protected=protected --ignore-file-override ../../openapi-generator-ignore",
"pretsc": "npm run generate-sdk",
"tsc": "tsc --project ./tsconfig.json",
"watch": "npm-watch"
},
"dependencies": {
"@hyperledger/cactus-cmd-api-server": "2.0.0-alpha.2",
"@hyperledger/cactus-common": "2.0.0-alpha.2",
"@hyperledger/cactus-core": "2.0.0-alpha.2",
"@hyperledger/cactus-core-api": "2.0.0-alpha.2",
"@hyperledger/cactus-plugin-keychain-memory": "2.0.0-alpha.2",
"@hyperledger/cactus-plugin-ledger-connector-besu": "2.0.0-alpha.2",
"@hyperledger/cactus-plugin-ledger-connector-fabric": "2.0.0-alpha.2",
"@hyperledger/cactus-plugin-object-store-ipfs": "2.0.0-alpha.2",
"@hyperledger/cactus-test-tooling": "2.0.0-alpha.2",
"axios": "1.6.0",
"body-parser": "1.20.2",
"fs-extra": "10.1.0",
"key-encoder": "2.0.3",
"typescript-optional": "2.0.1",
"uuid": "9.0.1",
"web3": "1.6.1",
"web3-core": "1.6.1"
},
"devDependencies": {
"@types/body-parser": "1.19.4",
"@types/crypto-js": "4.0.1",
"@types/express": "4.17.19",
"@types/fs-extra": "11.0.3",
"@types/tape": "4.13.4",
"@types/uuid": "9.0.6",
"express": "4.18.2",
"fabric-network": "2.2.20",
"socket.io": "4.5.4"
},
"engines": {
"node": ">=18",
"npm": ">=8"
},
"publishConfig": {
"access": "public"
},
"watch": {
"tsc": {
"patterns": [
"src/",
"src/*/json/**/openapi*"
],
"ignore": [
"src/**/generated/*"
],
"extensions": [
"ts",
"json"
],
"quiet": true,
"verbose": false,
"runOnChangeOnly": true
}
}
}
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