[infra] Add srcmap step to code coverage job (follow-up #1547). (#1868)

infra/gcb/build_and_run_coverage.py

@@ -92,6 +92,15 @@ def get_build_steps(project_dir):
           ],
           'dir': 'oss-fuzz/projects/' + name,
       },
+      {
+          'name':
+              image,
+          'args': [
+              'bash', '-c',
+              'srcmap > /workspace/srcmap.json && cat /workspace/srcmap.json'
+          ],
+          'env': ['OSSFUZZ_REVISION=$REVISION_ID'],
+      },
   ]
 
   env = CONFIGURATION[:]
@@ -204,6 +213,21 @@ def get_build_steps(project_dir):
       }
   )
 
+  # Upload srcmap.
+  srcmap_upload_url = UPLOAD_URL_FORMAT.format(
+      project=project_name, type='srcmap', date=report_date)
+  srcmap_upload_url = srcmap_upload_url.rstrip('/') + '.json'
+  build_steps.append(
+      {
+          'name': 'gcr.io/cloud-builders/gsutil',
+          'args': [
+              'cp',
+              '/workspace/srcmap.json',
+              srcmap_upload_url,
+          ],
+      }
+  )
+
   # Update the latest report information file for ClusterFuzz.
   latest_report_info_url = build_project.get_signed_url(
       LATEST_REPORT_INFO_URL.format(project=project_name),