ci(github): skip commit parity for bots

    Primary Changes
    ---------------
    1. Updated the workflow to include a skip
       when the PR author is dependabot
    2. Updated the pr-commit parity script to
       include Levenshtein Distance string metric
       instead of importing a package to reduce
       workflow runtime

    Changes required to incorporate 1)
    3. Updated workflows/pr-commit-parity.yaml with
       a conditional statement

    Changes required to incorporate 2)
    4. Updated the script with the functions,
       levensheteinDistance and stringSimilarity
       to have the required functionality
    5. Updated the package.json with removal of the
       package dependency of string-similarity-js
    6. Updated the workflow and removed steps to
       parse the project, thus reducing workflow
       runtime

Fixes hyperledger#3469

Signed-off-by: jagpreetsinghsasan <jagpreetsinghsasan@accenture.com>

.github/workflows/pr-commit-parity.yaml

@@ -18,26 +18,10 @@ jobs:
   pr-commit-parity:
     name: PR and Commit messages Parity
     runs-on: ubuntu-22.04
+    if: "!contains('dependabot[bot]', github.event.pull_request.user.login)"
     env:
       ACCEPTABLE_SIMILARITY_RATIO: 0.9
     steps:
     - uses: actions/checkout@v3.1.0
-    - name: Install Indy SDK
-      run: >
-        sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CE7709D068DB5E88 \
-          && sudo add-apt-repository "deb https://repo.sovrin.org/sdk/deb bionic stable" \
-          && sudo apt-get update \
-          && sudo apt-get install -y \
-              libindy \
-              libnullpay \
-              libvcx \
-              indy-cli \
-          && sudo rm -f /etc/apt/sources.list.d/sovrin.list*
-    - name: Set up NodeJS ${{ env.NODEJS_VERSION }}
-      uses: actions/setup-node@v4.0.3
-      with:
-        node-version: ${{ env.NODEJS_VERSION }}
-    - run: npm run configure
-
     - name: Execute pr-commit-parity script
       run: node tools/pr-commit-parity.js ${{ github.event.pull_request.url }} "$ACCEPTABLE_SIMILARITY_RATIO"

package.json

@@ -202,7 +202,6 @@
     "sort-package-json": "1.57.0",
     "source-map-loader": "4.0.1",
     "stream-browserify": "3.0.0",
-    "string-similarity-js": "2.1.4",
     "tap": "16.3.8",
     "tape": "5.6.6",
     "tape-promise": "4.0.0",

tools/pr-commit-parity.js

@@ -1,4 +1,48 @@
-import { stringSimilarity } from "string-similarity-js";
+// Levenshtein Distance string metric is used for calculating
+// string similarity which changes from 0 to 1,
+// for 1 being exactly the same
+function levenshteinDistance(str1, str2) {
+  const len1 = str1.length;
+  const len2 = str2.length;
+  const dp = Array.from({ length: len1 + 1 }, () => Array(len2 + 1).fill(0));
+
+  for (let i = 0; i <= len1; i++) {
+    dp[i][0] = i;
+  }
+
+  for (let j = 0; j <= len2; j++) {
+    dp[0][j] = j;
+  }
+
+  for (let i = 1; i <= len1; i++) {
+    for (let j = 1; j <= len2; j++) {
+      if (str1[i - 1] === str2[j - 1]) {
+        dp[i][j] = dp[i - 1][j - 1];
+      } else {
+        dp[i][j] = Math.min(
+          dp[i - 1][j] + 1,
+          dp[i][j - 1] + 1,
+          dp[i - 1][j - 1] + 1,
+        );
+      }
+    }
+  }
+
+  return dp[len1][len2];
+}
+
+function stringSimilarity(str1, str2) {
+  const maxLen = Math.max(str1.length, str2.length);
+
+  if (maxLen === 0) {
+    return 100; // Both strings are empty
+  }
+
+  const distance = levenshteinDistance(str1, str2);
+  const similarity = ((maxLen - distance) / maxLen) * 100;
+
+  return parseFloat(similarity.toFixed(2)/100);
+}
 
 export async function fetchJsonFromUrl(url) {
   const fetchResponse = await fetch(url);

yarn.lock

@@ -11107,7 +11107,6 @@ __metadata:
     sort-package-json: "npm:1.57.0"
     source-map-loader: "npm:4.0.1"
     stream-browserify: "npm:3.0.0"
-    string-similarity-js: "npm:2.1.4"
     tap: "npm:16.3.8"
     tape: "npm:5.6.6"
     tape-promise: "npm:4.0.0"
@@ -49476,13 +49475,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"string-similarity-js@npm:2.1.4":
-  version: 2.1.4
-  resolution: "string-similarity-js@npm:2.1.4"
-  checksum: 10/55063198f233aca8833d8429626d9fafdeb164e0fc6a66364a4d8f509df17d49f8a8a42e4096da60c53fe4586b1bace7098c0265da590fe4ec96c3a8ecb90f69
-  languageName: node
-  linkType: hard
-
 "string-similarity@npm:^4.0.1":
   version: 4.0.4
   resolution: "string-similarity@npm:4.0.4"