Merge pull request #365 from rsksmart/show-powpeg-node-jar-sha256

Shows powpeg node jar sha256 hash.

Author: marcos-iov

test.js

@@ -4,6 +4,8 @@ const colors = require('colors/safe');
 const LineWrapper = require('stream-line-wrapper');
 const expect = require('chai').expect;
 const path = require('node:path');
+const crypto = require('node:crypto');
+const fs = require('node:fs');
 
 const BitcoinRunner = require('./lib/bitcoin-runner').Runner;
 
@@ -112,6 +114,25 @@ function validateBitcoinRunnerConfig(bitcoinConf, configs){
   }
 };
 
+async function printPowpegJarSha256() {
+  const jarPath = process.env.POWPEG_NODE_JAR_PATH;
+  if (!jarPath) return;
+  try {
+    console.log(`Computing sha256 for powpeg node jar (POWPEG_NODE_JAR_PATH): ${jarPath}...`);
+    const hash = crypto.createHash('sha256');
+    const stream = fs.createReadStream(jarPath);
+    await new Promise((resolve, reject) => {
+      stream.on('data', (chunk) => hash.update(chunk));
+      stream.on('end', resolve);
+      stream.on('error', reject);
+    });
+    console.log(`Powpeg node jar sha256: ${hash.digest('hex')}`);
+    console.log("");
+  } catch (e) {
+    console.log(`Could not compute sha256 for powpeg node jar (${jarPath}): ${e.message}`);
+  }
+}
+
 process.on('SIGTERM', function() {
   process.stdout.write( "\nGracefully shutting down from SIGTERM." );
   shutdownHooks();
@@ -138,6 +159,8 @@ before(async () => {
   const runnersConfig = config.runners || {};
   const initConfig = config.init || {};
 
+  await printPowpegJarSha256();
+
   // Start bitcoin daemon if needed
   if (runnersConfig.bitcoin == null) {
     const btcStderr = new LineWrapper({ prefix: BITCOIND_OUTPUT });