Set and cache dependency directory for Java build-mode: none

src/analyze.ts

@@ -11,6 +11,7 @@ import { getApiClient } from "./api-client";
 import { setupCppAutobuild } from "./autobuild";
 import { CodeQL, getCodeQL } from "./codeql";
 import * as configUtils from "./config-utils";
+import { getJavaDependencyDir } from "./dependency-caching";
 import { addDiagnostic, makeDiagnostic } from "./diagnostics";
 import {
   DiffThunkRange,
@@ -166,6 +167,12 @@ export async function runExtraction(
         ) {
           await setupCppAutobuild(codeql, logger);
         }
+
+        if (language === Language.java && config.buildMode === BuildMode.None) {
+          process.env["CODEQL_EXTRACTOR_JAVA_OPTION_BUILDLESS_DEPENDENCY_DIR"] =
+            getJavaDependencyDir();
+        }
+
         await codeql.extractUsingBuildMode(config, language);
       } else {
         await codeql.extractScannedLanguage(config, language);

src/dependency-caching.ts

@@ -4,6 +4,7 @@ import { join } from "path";
 import * as actionsCache from "@actions/cache";
 import * as glob from "@actions/glob";
 
+import { getTemporaryDirectory } from "./actions-util";
 import { getTotalCacheSize } from "./caching-utils";
 import { Config } from "./config-utils";
 import { EnvVar } from "./environment";
@@ -28,6 +29,10 @@ interface CacheConfig {
 const CODEQL_DEPENDENCY_CACHE_PREFIX = "codeql-dependencies";
 const CODEQL_DEPENDENCY_CACHE_VERSION = 1;
 
+export function getJavaDependencyDir(): string {
+  return join(getTemporaryDirectory(), "codeql_java", "repository");
+}
+
 /**
  * Default caching configurations per language.
  */
@@ -38,6 +43,8 @@ const CODEQL_DEFAULT_CACHE_CONFIG: { [language: string]: CacheConfig } = {
       join(os.homedir(), ".m2", "repository"),
       // Gradle
       join(os.homedir(), ".gradle", "caches"),
+      // CodeQL Java build-mode: none
+      getJavaDependencyDir(),
     ],
     hash: [
       // Maven