add function for creating storage record

Signed-off-by: Meredith Lancaster <malancas@github.com>

packages/attest/src/artifact-metadata.ts

@@ -0,0 +1,48 @@
+import * as github from '@actions/github'
+import {retry} from '@octokit/plugin-retry'
+import {RequestHeaders} from '@octokit/types'
+
+const CREATE_STORAGE_RECORD_REQUEST = 'POST /orgs/{owner}/artifacts/metadata/storage-record'
+const DEFAULT_RETRY_COUNT = 5
+
+export type WriteOptions = {
+  retry?: number
+  headers?: RequestHeaders
+}
+
+/**
+ * Writes a storage record on behalf of an artifact
+ * @param artifactName - The name of the artifact.
+ * @param artifactDigest - The digest of the artifact.
+ * @param token - The GitHub token for authentication.
+ * @returns The ID of the storage record.
+ * @throws Error if the storage record fails to persist.
+ */
+export const createStorageRecord = async (
+  artifactName: string,
+  artifactDigest: string,
+  token: string,
+  options: WriteOptions = {}
+): Promise<string> => {
+  const retries = options.retry ?? DEFAULT_RETRY_COUNT
+  const octokit = github.getOctokit(token, {retry: {retries}}, retry)
+
+  try {
+    const response = await octokit.request(CREATE_STORAGE_RECORD_REQUEST, {
+      owner: github.context.repo.owner,
+      repo: github.context.repo.repo,
+      headers: options.headers,
+      artifact_name: artifactName,
+      artifact_digest: artifactDigest,
+    })
+
+    const data =
+      typeof response.data == 'string'
+        ? JSON.parse(response.data)
+        : response.data
+    return data?.id
+  } catch (err) {
+    const message = err instanceof Error ? err.message : err
+    throw new Error(`Failed to persist storage record: ${message}`)
+  }
+}