fix(sl): add retries when creating indirection domain

[dcshzj]

Problem

Creating the DNS indirection domain will fail when multiple site launches are performed in a single site launch form submission.

Solution

Breaking Changes

• Yes - this PR contains breaking changes
• No - this PR is backwards compatible

Bug Fixes:

• An octokit plugin (@octokit/plugin-retry) is used to automatically retry on retry-able errors. This includes the 409 error code returned by GitHub due to concurrent edits made to the indirection repository.

Tests

Unable to test directly as this is a site launch change. However, the following code was used to simulate concurrent creation of files:

const { Octokit } = require("@octokit/rest");
const { retry } = require("@octokit/plugin-retry");

const FILE_CONTENTS = "Hello, world!";
const GITHUB_TOKEN = "TOKEN_HERE";

const MyOctokit = Octokit.plugin(retry);
const octokit = new MyOctokit({
  auth: GITHUB_TOKEN,
  request: { retries: 5 },
});

async function main() {
  const files = [
    "test-file-1.txt",
    "test-file-2.txt",
    "test-file-3.txt",
    "test-file-4.txt",
    "test-file-5.txt",
    "test-file-6.txt",
    "test-file-7.txt",
    "test-file-8.txt",
    "test-file-9.txt",
    "test-file-10.txt",
  ];
  await Promise.all(
    files.map(async (file) => {
      await octokit.repos.createOrUpdateFileContents({
        owner: "dcshzj",
        repo: "test",
        path: file,
        message: `Add ${file}`,
        content: Buffer.from(FILE_CONTENTS).toString("base64"),
      });
    })
  );
}

main();

Without the retries, only one file will be created and the rest will have an error. Adding the retry plugin will allow all 10 files to be created successfully.

Deploy Notes

New dependencies:

• @octokit/plugin-retry : An octokit plugin to automatically retry on retry-able errors.