chore(NA): move bazel workspace status from bash script into nodejs executable

.bazelrc

@@ -11,7 +11,7 @@ import %workspace%/.bazelrc.common
 
 # BuildBuddy
 ## Metadata settings
-build --workspace_status_command=$(pwd)/src/dev/bazel_workspace_status.sh
+build --workspace_status_command="node ./src/dev/bazel_workspace_status.js"
 # Enable this in case you want to share your build info
 # build --build_metadata=VISIBILITY=PUBLIC
 build --build_metadata=TEST_GROUPS=//packages

src/dev/bazel_workspace_status.js

@@ -0,0 +1,80 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+// Inspired on https://github.com/buildbuddy-io/buildbuddy/blob/master/workspace_status.sh
+// This script will be run bazel when building process starts to
+// generate key-value information that represents the status of the
+// workspace. The output should be like
+//
+// KEY1 VALUE1
+// KEY2 VALUE2
+//
+// If the script exits with non-zero code, it's considered as a failure
+// and the output will be discarded.
+
+(async () => {
+  const execa = require('execa');
+  const os = require('os');
+
+  async function runCmd(cmd, args) {
+    try {
+      return await execa(cmd, args);
+    } catch (e) {
+      return { exitCode: 1 };
+    }
+  }
+
+  // Git repo
+  const kbnGitOriginName = process.env.KBN_GIT_ORIGIN_NAME || 'origin';
+  const repoUrlCmdResult = await runCmd('git', [
+    'config',
+    '--get',
+    `remote.${kbnGitOriginName}.url`,
+  ]);
+  if (repoUrlCmdResult.exitCode === 0) {
+    // Only output REPO_URL when found it
+    console.log(`REPO_URL ${repoUrlCmdResult.stdout}`);
+  }
+
+  // Commit SHA
+  const commitSHACmdResult = await runCmd('git', ['rev-parse', 'HEAD']);
+  if (commitSHACmdResult.exitCode !== 0) {
+    process.exit(1);
+  }
+  console.log(`COMMIT_SHA ${commitSHACmdResult.stdout}`);
+
+  // Git branch
+  const gitBranchCmdResult = await runCmd('git', ['rev-parse', '--abbrev-ref', 'HEAD']);
+  if (gitBranchCmdResult.exitCode !== 0) {
+    process.exit(1);
+  }
+  console.log(`GIT_BRANCH ${gitBranchCmdResult.stdout}`);
+
+  // Tree status
+  const treeStatusCmdResult = await runCmd('git', ['diff-index', '--quiet', 'HEAD', '--']);
+  const treeStatusVarStr = 'GIT_TREE_STATUS';
+  if (treeStatusCmdResult.exitCode === 0) {
+    console.log(`${treeStatusVarStr} Clean`);
+  } else {
+    console.log(`${treeStatusVarStr} Modified`);
+  }
+
+  // Host
+  if (process.env.CI) {
+    const hostCmdResult = await runCmd('hostname');
+    const hostStr = hostCmdResult.stdout.split('-').slice(0, -1).join('-');
+    const coresStr = os.cpus().filter((cpu, index) => {
+      return !cpu.model.includes('Intel') || index % 2 === 1;
+    }).length;
+
+    if (hostCmdResult.exitCode !== 0) {
+      process.exit(1);
+    }
+    console.log(`HOST ${hostStr}-${coresStr}`);
+  }
+})();