1 files changed, 0 insertions, 124 deletions
diff --git a/gopls/internal/vulncheck/cache.go b/gopls/internal/vulncheck/cache.go
deleted file mode 100644
index 524ccfa81..000000000
--- a/gopls/internal/vulncheck/cache.go
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2021 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package vulncheck
-
-import (
-	"encoding/json"
-	"go/build"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"time"
-
-	"golang.org/x/vuln/client"
-	"golang.org/x/vuln/osv"
-)
-
-// copy from x/vuln/cmd/govulncheck/cache.go
-
-// NOTE: this cache implementation should be kept internal to the go tooling
-// (i.e. cmd/go/internal/something) so that the vulndb cache is owned by the
-// go command. Also it is currently NOT CONCURRENCY SAFE since it does not
-// implement file locking. If ported to the stdlib it should use
-// cmd/go/internal/lockedfile.
-
-// The cache uses a single JSON index file for each vulnerability database
-// which contains the map from packages to the time the last
-// vulnerability for that package was added/modified and the time that
-// the index was retrieved from the vulnerability database. The JSON
-// format is as follows:
-//
-// $GOPATH/pkg/mod/cache/download/vulndb/{db hostname}/indexes/index.json
-//   {
-//       Retrieved time.Time
-//       Index client.DBIndex
-//   }
-//
-// Each package also has a JSON file which contains the array of vulnerability
-// entries for the package. The JSON format is as follows:
-//
-// $GOPATH/pkg/mod/cache/download/vulndb/{db hostname}/{import path}/vulns.json
-//   []*osv.Entry
-
-// fsCache is file-system cache implementing osv.Cache
-// TODO: make cache thread-safe
-type fsCache struct {
-	rootDir string
-}
-
-// use cfg.GOMODCACHE available in cmd/go/internal?
-var defaultCacheRoot = filepath.Join(build.Default.GOPATH, "/pkg/mod/cache/download/vulndb")
-
-func defaultCache() *fsCache {
-	return &fsCache{rootDir: defaultCacheRoot}
-}
-
-type cachedIndex struct {
-	Retrieved time.Time
-	Index     client.DBIndex
-}
-
-func (c *fsCache) ReadIndex(dbName string) (client.DBIndex, time.Time, error) {
-	b, err := ioutil.ReadFile(filepath.Join(c.rootDir, dbName, "index.json"))
-	if err != nil {
-		if os.IsNotExist(err) {
-			return nil, time.Time{}, nil
-		}
-		return nil, time.Time{}, err
-	}
-	var index cachedIndex
-	if err := json.Unmarshal(b, &index); err != nil {
-		return nil, time.Time{}, err
-	}
-	return index.Index, index.Retrieved, nil
-}
-
-func (c *fsCache) WriteIndex(dbName string, index client.DBIndex, retrieved time.Time) error {
-	path := filepath.Join(c.rootDir, dbName)
-	if err := os.MkdirAll(path, 0755); err != nil {
-		return err
-	}
-	j, err := json.Marshal(cachedIndex{
-		Index:     index,
-		Retrieved: retrieved,
-	})
-	if err != nil {
-		return err
-	}
-	if err := ioutil.WriteFile(filepath.Join(path, "index.json"), j, 0666); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (c *fsCache) ReadEntries(dbName string, p string) ([]*osv.Entry, error) {
-	b, err := ioutil.ReadFile(filepath.Join(c.rootDir, dbName, p, "vulns.json"))
-	if err != nil {
-		if os.IsNotExist(err) {
-			return nil, nil
-		}
-		return nil, err
-	}
-	var entries []*osv.Entry
-	if err := json.Unmarshal(b, &entries); err != nil {
-		return nil, err
-	}
-	return entries, nil
-}
-
-func (c *fsCache) WriteEntries(dbName string, p string, entries []*osv.Entry) error {
-	path := filepath.Join(c.rootDir, dbName, p)
-	if err := os.MkdirAll(path, 0777); err != nil {
-		return err
-	}
-	j, err := json.Marshal(entries)
-	if err != nil {
-		return err
-	}
-	if err := ioutil.WriteFile(filepath.Join(path, "vulns.json"), j, 0666); err != nil {
-		return err
-	}
-	return nil
-}