feat(plugin-ledger-connector-besu): contract deployment and tests

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

.gitignore

@@ -7,9 +7,6 @@ docs/main
 logs/
 jspm_packages/
 
-# TypeScript v1 declaration files
-typings/
-
 # Optional npm cache directory
 .npm
 

CONTRIBUTING.md

@@ -27,12 +27,21 @@ To protect the Hyperledger Cactus source code, GitHub pull requests are accepted
 1. Initiate a pull request from your fork to the base repository
 1. Await CI, DCO & linting quality checks, as well as any feedback from reviewers
 
-### Adding a new dependency to one of the packages:
+### Adding a new public npm dependency to one of the packages:
 
 For example web3 can be added as a dependency to the besu ledger connector plugin's package this way:
 
 ```sh
 npx lerna add web3@latest --scope '*/*plugin-ledger-connector-besu' --exact # [--dev] [--peer]
+npx lerna add is-port-reachable --scope '*/*test-tooling' --exact # [--dev] [--peer]
 ```
 
 If you are adding a development dependency you can use the `--dev` option and `--peer` for a peer dependency.
+
+### Adding a sibling package npm dependency to one of the packages:
+
+For example the `bif-test-tooling` can be added as a dev dependency to the besu ledger connector plugin's package this way:
+
+```sh
+npx lerna add @hyperledger-labs/bif-test-tooling --scope '*/*plugin-ledger-connector-besu' --exact --dev
+```

packages/bif-core-api/src/main/typescript/plugin/ledger-connector/i-plugin-ledger-connector.ts

@@ -0,0 +1,18 @@
+
+/**
+ * Common interface to be implemented by plugins which are implementing the connection to ledgers.
+ */
+export interface IPluginLedgerConnector {
+
+    /**
+     * Deploys the BIF build-in smart contract written for this ledger to manage the validator's public keys.
+     */
+    deployContract(): Promise<void>;
+
+    /**
+     * Adds the public key to the ledger state.
+     *
+     * @param publicKeyHex The HEX representation of a public key of a BIF node.
+     */
+    addPublicKey(publicKeyHex: string): Promise<void>;
+}

packages/bif-core-api/src/main/typescript/public-api.ts

@@ -1,3 +1,4 @@
+export { IPluginLedgerConnector } from './plugin/ledger-connector/i-plugin-ledger-connector';
 export { IPluginKVStorage } from './plugin/storage/key-value/i-plugin-kv-storage';
 export { IPluginKeychain } from './plugin/keychain/i-plugin-keychain';
 export { PluginFactory } from './plugin/plugin-factory';

packages/bif-plugin-ledger-connector-besu/README.md

@@ -0,0 +1,9 @@
+# `@hyperledger-labs/bif-plugin-ledger-connector`
+
+> TODO: description
+
+## Usage
+
+```
+// TODO: DEMONSTRATE API
+```