Update metrics utility to use JSON pattern for repos

Author: dacharyc

github-metrics/README.md

@@ -39,14 +39,30 @@ This code is in the `get-github-metrics.js` file.
 
 ### Change repos to track
 
-This project uses `RepoDetails` declared in the `index.js` file to track the owner and repo name for a given project
-whose metrics we want to track.
+This project pulls the configuration data from [repo-details.json](repo-details.json) to track the owner and repo name for repositories whose metrics we want to track.
 
-Declare as many `RepoDetails` as you need, and add them to the `repos` array in ln 19 of the `index.js` file. The code
-handles tracking and writing to Atlas for multiple repos.
+#### Add a new repository
 
-Inserting a new repo automatically creates a new corresponding collection in Atlas. You will need to manually create
-Charts to correspond to the new collection.
+To add a new repository, create a new entry in the `repo-details.json` file in the following format:
+
+```json
+{
+  "owner": "<repo-owner>",
+  "repo": "<repo-name>"
+}
+```
+
+You can get the owner and name from the repo URL: `https://github.com/<owner>/<repo>`
+For example, to add the MongoDB docs-notebooks repository, you'd add the following to the `repo-details.json`:
+
+```json
+{
+  "owner": "mongodb",
+  "repo": "docs-notebooks"
+}
+```
+
+The code handles tracking and writing to Atlas for multiple repos. Inserting a new repo automatically creates a new corresponding collection in Atlas. You will need to manually create Charts to correspond to the new collection.
 
 ### Write metrics to Atlas
 

github-metrics/RepoDetails.js

@@ -0,0 +1,8 @@
+// This class is used to map the deserialized owner and repo name for a given repository to the corresponding `repo-details.json` config data.
+
+export class RepoDetails {
+    constructor(owner, repo) {
+        this.owner = owner; // the GitHub organization or member who owns the repo
+        this.repo = repo; // the name of the repo within the organization or member
+    }
+}

github-metrics/index.js

@@ -1,30 +1,48 @@
+import { readFile } from 'fs/promises';
 import { getGitHubMetrics } from "./get-github-metrics.js";
 import { addMetricsToAtlas } from "./write-to-db.js";
+import { RepoDetails } from './RepoDetails.js'; // Import the RepoDetails class
 
-/* To change which repos to track metrics for, update the `repos` array before running the utility. 
-To track metrics for a new repo, set the owner and name first. 
+/* To change which repos to track metrics for, update the `repo-details.json` file.
+To track metrics for a new repo, add a new entry with the owner and repo name.
 You can get the owner and name from the repo URL: `https://github.com/<owner>/<repo>`
-For example, to add `https://github.com/mongodb/docs-notebooks`, set `mongodb` as the 
-owner and `docs-notebooks` as the repo name.
+For example, to add `https://github.com/mongodb/docs-notebooks`, add:
+{
+  "owner": "mongodb",
+  "repo": "docs-notebooks"
+}
 NOTE: The GitHub token used to retrieve the info from a repo MUST have repo admin permissions to access all the endpoints in this code. */
 
-class RepoDetails {
-    constructor(owner, repo) {
-        this.owner = owner; // the GitHub organization or member who owns the repo
-        this.repo = repo; // the name of the repo within the organization or member
-    }
-}
+// processRepos reads the JSON config file and iterates through the repos specified, converting each to an instance of the RepoDetails class.
+async function processRepos() {
+    try {
+        // Read the JSON file
+        const data = await readFile('repo-details.json', 'utf8');
 
-const docsNotebooksRepo = new RepoDetails("mongodb", "docs-notebooks");
-const atlasArchitectureGoSdkRepo = new RepoDetails("mongodb", "atlas-architecture-go-sdk");
+        // Parse the JSON data into an array
+        const reposArray = JSON.parse(data);
 
-const repos = [docsNotebooksRepo, atlasArchitectureGoSdkRepo];
+        // Convert each repo object into an instance of RepoDetails
+        const repos = reposArray.map(
+            (repo) => new RepoDetails(repo.owner, repo.repo)
+        );
 
-const metricsDocs = [];
+        const metricsDocs = [];
 
-for (const repo of repos) {
-    const metricsDoc = await getGitHubMetrics(repo.owner, repo.repo);
-    metricsDocs.push(metricsDoc);
+        // Iterate through the repos array
+        for (const repo of repos) {
+            const metricsDoc = await getGitHubMetrics(repo.owner, repo.repo);
+            metricsDocs.push(metricsDoc);
+        }
+
+        await addMetricsToAtlas(metricsDocs);
+    } catch (error) {
+        console.error('Error processing repos:', error);
+    }
 }
 
-await addMetricsToAtlas(metricsDocs);
+// Call the function
+processRepos().catch(error => {
+    console.error('Fatal error:', error);
+    process.exit(1);
+});