Add post hook support

Signed-off-by: Xuanwo <github@xuanwo.io>

src/show_stats.ts

@@ -0,0 +1,37 @@
+// Copyright 2023 Mozilla Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import * as core from '@actions/core';
+import {exec} from 'child_process';
+
+async function show_stats() {
+  // Start hdfs daemon.
+  exec(
+    `${process.env.SCCACHE_PATH} --show-stats`,
+    (err: any, stdout: any, stderr: any) => {
+      core.info(stdout);
+      core.warning(stderr);
+
+      if (err) {
+        core.error('failed to show sccache stats');
+        throw new Error(err);
+      }
+    }
+  );
+}
+
+show_stats().catch(err => {
+  core.error(err);
+  core.setFailed(err.message);
+});