feat(crate): Support releaseTimestamp

lib/modules/datasource/crate/index.spec.ts

@@ -389,4 +389,46 @@ describe('modules/datasource/crate/index', () => {
       ).toReject();
     });
   });
+
+  describe('postprocessRelease', () => {
+    const datasource = new CrateDatasource();
+
+    it('no-op for registries other than crates.io', async () => {
+      const releaseOrig = { version: '4.5.17' };
+
+      const res = await datasource.postprocessRelease(
+        {
+          packageName: 'clap',
+          registryUrl: 'https://example.com',
+        },
+        releaseOrig,
+      );
+
+      expect(res).toBe(releaseOrig);
+    });
+
+    it('fetches releaseTimestamp', async () => {
+      httpMock
+        .scope(API_BASE_URL)
+        .get('/crates/clap/4.5.17')
+        .reply(200, {
+          version: {
+            created_at: '2024-09-04T19:16:41.355243+00:00',
+          },
+        });
+
+      const res = await datasource.postprocessRelease(
+        {
+          packageName: 'clap',
+          registryUrl: 'https://crates.io',
+        },
+        { version: '4.5.17' },
+      );
+
+      expect(res).toEqual({
+        version: '4.5.17',
+        releaseTimestamp: '2024-09-04T19:16:41.355243+00:00',
+      });
+    });
+  });
 });

lib/modules/datasource/crate/index.ts

@@ -1,5 +1,6 @@
 import Git from 'simple-git';
 import upath from 'upath';
+import { z } from 'zod';
 import { GlobalConfig } from '../../../config/global';
 import { logger } from '../../../logger';
 import * as memCache from '../../../util/cache/memory';
@@ -11,7 +12,12 @@ import { newlineRegex, regEx } from '../../../util/regex';
 import { joinUrlParts, parseUrl } from '../../../util/url';
 import * as cargoVersioning from '../../versioning/cargo';
 import { Datasource } from '../datasource';
-import type { GetReleasesConfig, Release, ReleaseResult } from '../types';
+import type {
+  GetReleasesConfig,
+  PostprocessReleaseConfig,
+  Release,
+  ReleaseResult,
+} from '../types';
 import type {
   CrateMetadata,
   CrateRecord,
@@ -371,4 +377,39 @@ export class CrateDatasource extends Datasource {
 
     return [packageName.slice(0, 2), packageName.slice(2, 4), packageName];
   }
+
+  private static releaseTimestampSchema = z
+    .object({
+      version: z.object({
+        created_at: z.string(),
+      }),
+    })
+    .transform(({ version: { created_at } }) => created_at);
+
+  @cache({
+    namespace: `datasource-crate`,
+    key: (
+      { registryUrl, packageName }: PostprocessReleaseConfig,
+      { version }: Release,
+    ) => `postprocessRelease:${registryUrl}:${packageName}:${version}`,
+    ttlMinutes: 24 * 60,
+    cacheable: ({ registryUrl }: PostprocessReleaseConfig, _: Release) =>
+      registryUrl === 'https://crates.io',
+  })
+  async postprocessRelease(
+    { packageName, registryUrl }: PostprocessReleaseConfig,
+    release: Release,
+  ): Promise<Release | null> {
+    if (registryUrl !== 'https://crates.io') {
+      return release;
+    }
+
+    const url = `https://crates.io/api/v1/crates/${packageName}/${release.version}`;
+    const { body: releaseTimestamp } = await this.http.getJson(
+      url,
+      CrateDatasource.releaseTimestampSchema,
+    );
+    release.releaseTimestamp = releaseTimestamp;
+    return release;
+  }
 }