*
     * @return The model cache or {@code null} if not set.
     */
    ModelCache getModelCache();

    /**
     * Sets the model cache to use for reuse of previously built models. This is an optional component that serves
     * performance optimizations.
     *
     * @param modelCache The model cache to use, may be {@code null}.
     * @return This request, never {@code null}.
     */

Each script runs in a fresh temporary work directory tree, available to scripts as $WORK.
Scripts also have access to other environment variables, including:

	GOARCH=<target GOARCH>
	GOCACHE=<actual GOCACHE being used outside the test>
	GOEXE=<executable file suffix: .exe on Windows, empty on other systems>
	GOOS=<target GOOS>
	GOPATH=$WORK/gopath
	GOPROXY=<local module proxy serving from cmd/go/testdata/mod>

[!fuzz] skip
[short] skip
env GOCACHE=$WORK/cache

# Warm up the build cache with GOMAXPROCS unrestricted.
go test -c -o $devnull

# For the fuzzing phase, we reduce GOMAXPROCS to avoid consuming too many
# resources during the test. Ideally this would just free up resources to run
# other parallel tests more quickly, but unfortunately it is actually necessary
# in some 32-bit environments to prevent the fuzzing engine from running out of

        request.transformerContextBuilder(modelBuilder.newTransformerContextBuilder());
        request.systemProperties(session.getSystemProperties());
        request.userProperties(session.getUserProperties());
        request.modelCache(DefaultModelCache.newInstance(session, false));
        if (session.getCache() != null) {
            Map<?, ?> map = (Map) session.getCache().get(session, DefaultModelCache.class.getName());

import org.apache.maven.api.services.ModelBuilderException;
import org.apache.maven.api.services.ModelBuilderRequest;
import org.apache.maven.api.services.ModelBuilderResult;
import org.apache.maven.api.services.ModelCache;
import org.apache.maven.api.services.ModelProblem;
import org.apache.maven.api.services.ModelProblemCollector;
import org.apache.maven.api.services.ModelResolver;
import org.apache.maven.api.services.ModelResolverException;

source "${KUBE_ROOT}/hack/lib/init.sh"
source "${KUBE_ROOT}/hack/lib/util.sh"

# make sure everything is committed
kube::util::ensure_clean_working_dir

# This sets up the environment, like GOCACHE, which keeps the worktree cleaner.
kube::golang::setup_env

go install golang.org/x/vuln/cmd/govulncheck@v1.0.1

# KUBE_VERIFY_GIT_BRANCH is populated in verify CI jobs
BRANCH="${KUBE_VERIFY_GIT_BRANCH:-master}"

		{Name: "GOFLAGS", Value: cfg.Getenv("GOFLAGS")},
		{Name: "GOHOSTARCH", Value: runtime.GOARCH},
		{Name: "GOHOSTOS", Value: runtime.GOOS},
		{Name: "GOINSECURE", Value: cfg.GOINSECURE},
		{Name: "GOMODCACHE", Value: cfg.GOMODCACHE, Changed: cfg.GOMODCACHEChanged},
		{Name: "GONOPROXY", Value: cfg.GONOPROXY, Changed: cfg.GONOPROXYChanged},
		{Name: "GONOSUMDB", Value: cfg.GONOSUMDB, Changed: cfg.GONOSUMDBChanged},

        private final ConcurrentMap<String, Object> parentCache;
        private final ModelTransformerContextBuilder transformerContextBuilder;
        private final ExecutorService executor;
        private final ModelCache modelCache;
        private final ModelResolver modelResolver;

        BuildSession(ProjectBuildingRequest request, boolean localProjects) {
            this.request = request;
            this.session =

# Test that cached test results are invalidated in response to
# changes to the external inputs to the test.

[short] skip
[GODEBUG:gocacheverify=1] skip

# We're testing cache behavior, so start with a clean GOCACHE.
env GOCACHE=$WORK/cache

# Build a helper binary to invoke os.Chtimes.
go build -o mkold$GOEXE mkold.go

# Make test input files appear to be a minute old.
exec ./mkold$GOEXE 1m testcache/file.txt

// given repository type and name.
func WorkDir(ctx context.Context, typ, name string) (dir, lockfile string, err error) {
	if cfg.GOMODCACHE == "" {
		return "", "", fmt.Errorf("neither GOPATH nor GOMODCACHE are set")
	}

	// We name the work directory for the SHA256 hash of the type and name.
	// We intentionally avoid the actual name both because of possible