Store and restore dependency caches in init Action

src/init-action-post.ts

@@ -14,6 +14,7 @@ import {
 import { getGitHubVersion } from "./api-client";
 import { Config, getConfig } from "./config-utils";
 import * as debugArtifacts from "./debug-artifacts";
+import { uploadDependencyCaches } from "./dependency-caching";
 import { Features } from "./feature-flags";
 import * as initActionPostHelper from "./init-action-post-helper";
 import { getActionsLogger } from "./logging";
@@ -25,6 +26,7 @@ import {
   getActionsStatus,
   ActionName,
   getJobStatusDisplayName,
+  JobStatus,
 } from "./status-report";
 import {
   checkDiskUsage,
@@ -116,6 +118,14 @@ async function runWrapper() {
     };
     await sendStatusReport(statusReport);
   }
+
+  // Store dependency cache(s) if the job was successful and dependency caching is enabled.
+  if (
+    jobStatus === JobStatus.SuccessStatus &&
+    config.dependencyCachingEnabled
+  ) {
+    await uploadDependencyCaches(config, logger);
+  }
 }
 
 void runWrapper();

src/init-action.ts

@@ -17,6 +17,7 @@ import {
 import { getGitHubVersion } from "./api-client";
 import { CodeQL } from "./codeql";
 import * as configUtils from "./config-utils";
+import { downloadDependencyCaches } from "./dependency-caching";
 import {
   addDiagnostic,
   flushDiagnostics,
@@ -557,6 +558,11 @@ async function run() {
       core.exportVariable(bmnVar, value);
     }
 
+    // Restore dependency cache(s), if they exist.
+    if (config.dependencyCachingEnabled) {
+      await downloadDependencyCaches(config.languages, logger);
+    }
+
     // For CLI versions <2.15.1, build tracing caused errors in MacOS ARM machines with
     // System Integrity Protection (SIP) disabled.
     if (