repokitteh: Add /coverage command (#24288)

Signed-off-by: Ryan Northey <[email protected]>

ci/repokitteh/modules/coverage.star

@@ -0,0 +1,28 @@
+
+COVERAGE_LINK_MESSAGE = """
+
+Coverage for this Pull Request will be rendered here:
+
+https://storage.googleapis.com/envoy-pr/%s/coverage/index.html
+
+The coverage results are (re-)rendered each time the CI `envoy-presubmit (check linux_x64 coverage)` job completes.
+
+"""
+
+def should_add_coverage_link(action, issue_title):
+    return (
+        action == 'opened'
+        and issue_title.startswith("coverage:"))
+
+def add_coverage_link(issue_number):
+    github.issue_create_comment(COVERAGE_LINK_MESSAGE % issue_number)
+
+def _pr(action, issue_number, issue_title):
+    if should_add_coverage_link(action, issue_title):
+        add_coverage_link(issue_number)
+
+def _add_coverage(issue_number):
+    add_coverage_link(issue_number)
+
+handlers.pull_request(func=_pr)
+handlers.command(name='coverage', func=_add_coverage)

repokitteh.star

@@ -4,6 +4,7 @@ use("github.com/repokitteh/modules/assign.star")
 use("github.com/repokitteh/modules/review.star")
 use("github.com/repokitteh/modules/wait.star")
 use("github.com/envoyproxy/envoy/ci/repokitteh/modules/azure_pipelines.star", secret_token=get_secret('azp_token'))
+use("github.com/envoyproxy/envoy/ci/repokitteh/modules/coverage.star")
 use("github.com/envoyproxy/envoy/ci/repokitteh/modules/docs.star")
 use("github.com/envoyproxy/envoy/ci/repokitteh/modules/newpr.star")
 use(