feat(test-tooling): add OpenEthereumTestLedger hyperledger-cacti#851

We did not need to roll our own contanier image for this
so the only thing new here is the class in the test tooling
package that makes it convenient to write test cases against
OpenEthereum. The container image used by the class behind
the scenes is just the stock OpenEthereum image from DockerHub.

Fixes hyperledger-cacti#851

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

packages/cactus-test-tooling/src/main/typescript/openethereum/openethereum-test-ledger.ts

@@ -0,0 +1,206 @@
+import { EventEmitter } from "events";
+import Docker, { Container } from "dockerode";
+import { v4 as internalIpV4 } from "internal-ip";
+
+import {
+  Logger,
+  Checks,
+  LogLevelDesc,
+  LoggerProvider,
+  Bools,
+} from "@hyperledger/cactus-common";
+
+import { Containers } from "../common/containers";
+
+export interface IOpenEthereumTestLedgerOptions {
+  envVars?: string[];
+  imageVersion?: string;
+  imageName?: string;
+  chainId?: string;
+  logLevel?: LogLevelDesc;
+  emitContainerLogs?: boolean;
+  chain?: string;
+  httpPort?: number;
+}
+
+export const K_DEFAULT_OPEN_ETHEREUM_IMAGE_NAME = "openethereum/openethereum";
+export const K_DEFAULT_OPEN_ETHEREUM_IMAGE_VERSION = "v3.2.4";
+export const K_DEFAULT_OPEN_ETHEREUM_HTTP_PORT = 8545;
+// @see https://openethereum.github.io/Chain-specification
+// @see https://github.com/openethereum/openethereum/tree/main/crates/ethcore/res/chainspec
+export const K_DEFAULT_OPEN_ETHEREUM_CHAIN = "dev";
+
+// @see https://openethereum.github.io/Private-development-chain
+export const K_DEV_WHALE_ACCOUNT_PRIVATE_KEY =
+  "4d5db4107d237df6a3d58ee5f70ae63d73d7658d4026f2eefd2f204c81682cb7";
+export const K_DEV_WHALE_ACCOUNT_PUBLIC_KEY =
+  "00a329c0648769a73afac7f9381e08fb43dbea72";
+
+/**
+ * Class responsible for programmatically managing a container that is running
+ * the image made for hosting a keycloak instance which can be used to test
+ * authorization/authentication related use-cases.
+ */
+export class OpenEthereumTestLedger {
+  public static readonly CLASS_NAME = "OpenEthereumTestLedger";
+  private readonly log: Logger;
+  private readonly imageName: string;
+  private readonly imageVersion: string;
+  private readonly envVars: string[];
+  private readonly emitContainerLogs: boolean;
+  private readonly chain: string;
+  private readonly httpPort: number;
+  private _container: Container | undefined;
+  private _containerId: string | undefined;
+
+  public get imageFqn(): string {
+    return `${this.imageName}:${this.imageVersion}`;
+  }
+
+  public get className(): string {
+    return OpenEthereumTestLedger.CLASS_NAME;
+  }
+
+  public get container(): Container {
+    if (this._container) {
+      return this._container;
+    } else {
+      throw new Error(`Invalid state: _container is not set. Called start()?`);
+    }
+  }
+
+  constructor(public readonly options: IOpenEthereumTestLedgerOptions) {
+    const fnTag = `${this.className}#constructor()`;
+    Checks.truthy(options, `${fnTag} arg options`);
+
+    const level = this.options.logLevel || "INFO";
+    const label = this.className;
+    this.log = LoggerProvider.getOrCreate({ level, label });
+
+    this.emitContainerLogs = Bools.isBooleanStrict(options.emitContainerLogs)
+      ? (options.emitContainerLogs as boolean)
+      : true;
+
+    this.chain = this.options.chain || K_DEFAULT_OPEN_ETHEREUM_CHAIN;
+    this.httpPort = this.options.httpPort || K_DEFAULT_OPEN_ETHEREUM_HTTP_PORT;
+    this.imageName =
+      this.options.imageName || K_DEFAULT_OPEN_ETHEREUM_IMAGE_NAME;
+    this.imageVersion =
+      this.options.imageVersion || K_DEFAULT_OPEN_ETHEREUM_IMAGE_VERSION;
+    this.envVars = this.options.envVars || [];
+
+    this.log.info(`Created ${this.className} OK. Image FQN: ${this.imageFqn}`);
+  }
+
+  public async start(): Promise<Container> {
+    if (this._container) {
+      await this.container.stop();
+      await this.container.remove();
+    }
+    const docker = new Docker();
+
+    await Containers.pullImage(this.imageFqn);
+
+    const Env = [...[], ...this.envVars];
+    this.log.debug(`Effective Env of container: %o`, Env);
+
+    const apiUrl = await this.getRpcApiHttpHost("localhost", this.httpPort);
+    const Healthcheck = {
+      Test: ["CMD-SHELL", `curl -v '${apiUrl}'`],
+      Interval: 1000000000, // 1 second
+      Timeout: 3000000000, // 3 seconds
+      Retries: 99,
+      StartPeriod: 1000000000, // 1 second
+    };
+
+    const cmd = [
+      "--chain=" + this.chain,
+      "--no-persistent-txqueue", // Don't save pending local transactions to disk to be restored whenever the node restarts.
+      "--jsonrpc-port=" + this.httpPort,
+      "--jsonrpc-cors=all",
+      "--jsonrpc-interface=all",
+      "--jsonrpc-hosts=all",
+      "--jsonrpc-apis=web3,eth,net,parity",
+      "--ws-interface=all",
+      "--ws-apis=web3,eth,net,parity,pubsub",
+      "--ws-origins=all",
+      "--ws-hosts=all",
+      "--ws-max-connections=10",
+      "--max-peers=100",
+    ];
+
+    return new Promise<Container>((resolve, reject) => {
+      const eventEmitter: EventEmitter = docker.run(
+        this.imageFqn,
+        [...cmd],
+        [],
+        {
+          Env,
+          PublishAllPorts: true,
+          Healthcheck,
+        },
+        {},
+        (err?: Error) => {
+          if (err) {
+            this.log.error(`Failed to start ${this.imageFqn} container; `, err);
+            reject(err);
+          }
+        },
+      );
+
+      eventEmitter.once("start", async (container: Container) => {
+        this._container = container;
+        this._containerId = container.id;
+        if (this.emitContainerLogs) {
+          const logOptions = { follow: true, stderr: true, stdout: true };
+          const logStream = await container.logs(logOptions);
+          logStream.on("data", (data: Buffer) => {
+            this.log.debug(`[${this.imageFqn}] %o`, data.toString("utf-8"));
+          });
+        }
+        try {
+          await Containers.waitForHealthCheck(this._containerId);
+          resolve(container);
+        } catch (ex) {
+          reject(ex);
+        }
+      });
+    });
+  }
+
+  public async getRpcApiHttpHost(
+    host?: string,
+    port?: number,
+  ): Promise<string> {
+    const thePort = port || (await this.getHostPortHttp());
+    const lanIpV4OrUndefined = await internalIpV4();
+    const lanAddress = host || lanIpV4OrUndefined || "127.0.0.1"; // best effort...
+    return `http://${lanAddress}:${thePort}`;
+  }
+
+  public async stop(): Promise<void> {
+    if (this._container) {
+      await Containers.stop(this.container);
+    }
+  }
+
+  public destroy(): Promise<void> {
+    const fnTag = `${this.className}#destroy()`;
+    if (this._container) {
+      return this._container.remove();
+    } else {
+      const ex = new Error(`${fnTag} Container not found, nothing to destroy.`);
+      return Promise.reject(ex);
+    }
+  }
+
+  public async getHostPortHttp(): Promise<number> {
+    const fnTag = `${this.className}#getHostPortHttp()`;
+    if (this._containerId) {
+      const cInfo = await Containers.getById(this._containerId);
+      return Containers.getPublicPort(this.httpPort, cInfo);
+    } else {
+      throw new Error(`${fnTag} Container ID not set. Did you call start()?`);
+    }
+  }
+}

packages/cactus-test-tooling/src/main/typescript/public-api.ts

@@ -77,6 +77,17 @@ export {
   KeycloakContainer,
 } from "./keycloak/keycloak-container";
 
+export {
+  IOpenEthereumTestLedgerOptions,
+  K_DEFAULT_OPEN_ETHEREUM_HTTP_PORT,
+  K_DEFAULT_OPEN_ETHEREUM_IMAGE_NAME,
+  K_DEFAULT_OPEN_ETHEREUM_IMAGE_VERSION,
+  K_DEFAULT_OPEN_ETHEREUM_CHAIN,
+  K_DEV_WHALE_ACCOUNT_PRIVATE_KEY,
+  K_DEV_WHALE_ACCOUNT_PUBLIC_KEY,
+  OpenEthereumTestLedger,
+} from "./openethereum/openethereum-test-ledger";
+
 export {
   SAMPLE_CORDAPP_ROOT_DIRS,
   SampleCordappEnum,