perf(github): add knob/flag to manually override CI skip

Primary Changes
----------------
1. Created a function to check if the commit message
contains 'cacti-skip-ci' to skip the CI check.
2. Check if the request is from the maintainer or not.
If he is a Maintainer, the CI-skip request will be
granted, else not.

Fixes #2679

Signed-off-by: bado <zondervan.v.calvez@accenture.com>

.github/workflows/ci.yaml

@@ -16,9 +16,11 @@ env:
   RUN_CODE_COVERAGE: true
 jobs:
   ActionLint:
+    needs: check-ci-skip
     uses: ./.github/workflows/actionlint.yaml
   DCI-Lint:
     name: DCI-Lint
+    needs: check-ci-skip
     runs-on: ubuntu-22.04
     steps:
       - id: lint-git-repo
@@ -29,7 +31,15 @@ jobs:
       - name: Get the output response
         run: echo "${{ steps.lint-git-repo.outputs.lint-git-repo-response }}"
 
+  check-ci-skip:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4.1.7
+      - name: Check CI Skip
+        run: node tools/ci-skip-for-maintainers.js ${{ github.event.pull_request.url }} ${{ github.event.pull_request.user.login }}
+
   check-coverage:
+    needs: check-ci-skip
     outputs:
       run-coverage: ${{ steps.set-output.outputs.run-coverage }}
     runs-on: ubuntu-22.04
@@ -40,6 +50,7 @@ jobs:
         run: echo "run-coverage=${{ env.RUN_CODE_COVERAGE }}" >> "$GITHUB_OUTPUT"
 
   compute_changed_packages:
+    needs: check-ci-skip
     outputs:
       cmd-api-server-changed: ${{ steps.changes.outputs.cmd-api-server-changed }}
       plugin-ledger-connector-polkadot-changed: ${{ steps.changes.outputs.plugin-ledger-connector-polkadot-changed }}
@@ -164,6 +175,7 @@ jobs:
               # - './.github/workflows/ci.yaml'
 
   build-dev:
+    needs: check-ci-skip
     continue-on-error: false
     env:
       DEV_BUILD_DISABLED: false
@@ -2627,6 +2639,7 @@ jobs:
           ignore-unfixed: false
           vuln-type: 'os,library'
           severity: 'CRITICAL,HIGH'
+
 name: Cactus_CI
 'on':
   pull_request:

tools/ci-skip-for-maintainers.js

@@ -0,0 +1,103 @@
+import { readFileSync } from "fs";
+
+//A new tag exclusively for MAINTAINERS that allows skipping the CI check
+const SKIP_CACTI = "skip-cacti-ci";
+const MaintainersFile = "MAINTAINERS.md";
+//regular expression to get the maintainers in MAINTAINERS.md
+const NAMES_REGEX = /\|\s*([A-Za-z\s]+)\s*/;
+const LINKS_REGEX = /\|\s*\[([^\]]+)\]\[[^\]]+\]\s*/;
+const TAGS_REGEX = /\|\s*([A-Za-z0-9_-]+|-)*\s*/;
+const MAINTAINERS_REGEX = new RegExp(
+  NAMES_REGEX.source + LINKS_REGEX.source + TAGS_REGEX.source,
+  "g",
+);
+
+const main = async () => {
+  const markdownContent = readFileSync(MaintainersFile, "utf-8");
+
+  const args = process.argv.slice(2);
+  const pullReqUrl = args[0];
+  const committerLogin = args[1];
+
+  //Uncomment these lines and change it for local machine testing purposes:
+  //const pullReqUrl = "https://api.github.com/repos/<username>/cactus/pulls/<number>";
+  //const committerLogin = "<username>";
+
+  const fetchJsonFromUrl = async (url) => {
+    const fetchResponse = await fetch(url);
+    return fetchResponse.json();
+  };
+
+  let commitMessageList = [];
+  const commitMessagesMetadata = await fetchJsonFromUrl(
+    pullReqUrl + "/commits",
+  );
+
+  commitMessagesMetadata.forEach((commitMessageMetadata) => {
+    // get commit message body
+    commitMessageList.push(commitMessageMetadata["commit"]["message"]);
+  });
+
+  // Check if skip-ci is found in commit message
+  const checkSkipCI = () => {
+    for (let commitMessageListIndex in commitMessageList) {
+      let commitMessage = commitMessageList[commitMessageListIndex];
+      if (commitMessage.includes(SKIP_CACTI)) {
+        console.log("Skip requested in commit message.");
+        return true;
+      } else {
+        console.log("No skip request found.");
+      }
+      return false;
+    }
+  };
+
+  // Function to extract active maintainers
+  const extractMaintainers = (maintainerMetaData) => {
+    let match;
+    const maintainers = [];
+    while ((match = MAINTAINERS_REGEX.exec(maintainerMetaData)) !== null) {
+      const github = match[2];
+      maintainers.push(github);
+    }
+    return maintainers;
+  };
+  // Get the maintainers
+  const activeMaintainers = extractMaintainers(markdownContent);
+  activeMaintainers.forEach((maintainers) => {
+    maintainers;
+  });
+
+  // Check if committer is a trusted maintainer
+  const checkCommitterIsMaintainer = () => {
+    if (activeMaintainers.includes(committerLogin)) {
+      console.log("The author of this PR is an active maintainer.");
+      return true;
+    } else {
+      console.log(
+        "CI will not be skipped. \nThe author of this PR is not an active maintainer.\nPlease refer to https://github.com/hyperledger/cacti/blob/main/MAINTAINERS.md for the list of active maintainers.",
+      );
+      return false;
+    }
+  };
+
+  // Main logic
+
+  const shouldSkipCI = checkSkipCI();
+
+  if (shouldSkipCI) {
+    const isMaintainer = checkCommitterIsMaintainer();
+    if (isMaintainer) {
+      console.log(
+        "Exit with an error code so as to pause the dependent workflows. CI skipped as per request.",
+      );
+      process.exit(1); // Exit successfully to skip CI
+    }
+  } else {
+    console.log("No skip requested. Proceeding with CI.");
+    process.exit(0); // Exit successfully to run CI
+  }
+};
+
+// Run the main function
+main();