internal/lsp/command: replace VulncheckArgs Dir with URI

commandHandler.run expects a valid file for forURI and
forURI is necessary to fully populate commandDeps.
Our use of directory URI does not work.

We plan to use this custom command triggered through
codelenses on documents (e.g. go.mod), so we use
the document's URI.

Change-Id: I4de6d488dec5a4b71716499e7fc5e8328ecf3e49
Reviewed-on: https://go-review.googlesource.com/c/tools/+/420994
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>

gopls/doc/commands.md

@@ -274,8 +274,8 @@ Args:
 
 ```
 {
-	// Dir is the directory from which vulncheck will run from.
-	"Dir": string,
+	// Any document in the directory from which govulncheck will run.
+	"URI": string,
 	// Package pattern. E.g. "", ".", "./...".
 	"Pattern": string,
 }

gopls/internal/regtest/misc/vuln_test.go

@@ -26,7 +26,7 @@ package foo
 `
 	Run(t, files, func(t *testing.T, env *Env) {
 		cmd, err := command.NewRunVulncheckExpCommand("Run Vulncheck Exp", command.VulncheckArgs{
-			Dir: "/invalid/file/url", // invalid arg
+			URI: "/invalid/file/url", // invalid arg
 		})
 		if err != nil {
 			t.Fatal(err)
@@ -81,7 +81,8 @@ func main() {
 		},
 	).Run(t, files, func(t *testing.T, env *Env) {
 		cmd, err := command.NewRunVulncheckExpCommand("Run Vulncheck Exp", command.VulncheckArgs{
-			Dir: env.Sandbox.Workdir.RootURI(),
+			URI:     protocol.URIFromPath(env.Sandbox.Workdir.AbsPath("go.mod")),
+			Pattern: "./...",
 		})
 		if err != nil {
 			t.Fatal(err)

gopls/internal/vulncheck/command.go

@@ -26,9 +26,9 @@ func init() {
 	Govulncheck = govulncheck
 }
 
-func govulncheck(ctx context.Context, cfg *packages.Config, args command.VulncheckArgs) (res command.VulncheckResult, _ error) {
-	if args.Pattern == "" {
-		args.Pattern = "."
+func govulncheck(ctx context.Context, cfg *packages.Config, patterns string) (res command.VulncheckResult, _ error) {
+	if patterns == "" {
+		patterns = "."
 	}
 
 	dbClient, err := client.NewClient(findGOVULNDB(cfg), client.Options{HTTPCache: gvc.DefaultCache()})
@@ -37,7 +37,7 @@ func govulncheck(ctx context.Context, cfg *packages.Config, args command.Vulnche
 	}
 
 	c := cmd{Client: dbClient}
-	vulns, err := c.Run(ctx, cfg, args.Pattern)
+	vulns, err := c.Run(ctx, cfg, patterns)
 	if err != nil {
 		return res, err
 	}

gopls/internal/vulncheck/vulncheck.go

@@ -18,6 +18,6 @@ import (
 
 // Govulncheck runs the in-process govulncheck implementation.
 // With go1.18+, this is swapped with the real implementation.
-var Govulncheck = func(ctx context.Context, cfg *packages.Config, args command.VulncheckArgs) (res command.VulncheckResult, _ error) {
+var Govulncheck = func(ctx context.Context, cfg *packages.Config, patterns string) (res command.VulncheckResult, _ error) {
 	return res, errors.New("not implemented")
 }

internal/lsp/cmd/vulncheck.go

@@ -12,8 +12,6 @@ import (
 	"os"
 
 	"golang.org/x/tools/go/packages"
-	"golang.org/x/tools/internal/lsp/command"
-	"golang.org/x/tools/internal/lsp/protocol"
 	"golang.org/x/tools/internal/lsp/source"
 	"golang.org/x/tools/internal/tool"
 )
@@ -90,12 +88,10 @@ func (v *vulncheck) Run(ctx context.Context, args ...string) error {
 		Tests:      cfg.Tests,
 		BuildFlags: cfg.BuildFlags,
 		Env:        cfg.Env,
+		Dir:        cwd,
 	}
 
-	res, err := opts.Hooks.Govulncheck(ctx, loadCfg, command.VulncheckArgs{
-		Dir:     protocol.URIFromPath(cwd),
-		Pattern: pattern,
-	})
+	res, err := opts.Hooks.Govulncheck(ctx, loadCfg, pattern)
 	if err != nil {
 		return tool.CommandLineErrorf("govulncheck failed: %v", err)
 	}

internal/lsp/command.go

@@ -807,14 +807,14 @@ type pkgLoadConfig struct {
 }
 
 func (c *commandHandler) RunVulncheckExp(ctx context.Context, args command.VulncheckArgs) error {
-	if args.Dir == "" {
-		return errors.New("VulncheckArgs is missing Dir field")
+	if args.URI == "" {
+		return errors.New("VulncheckArgs is missing URI field")
 	}
 	err := c.run(ctx, commandConfig{
 		async:       true, // need to be async to be cancellable
 		progress:    "Checking vulnerability",
 		requireSave: true,
-		forURI:      args.Dir, // Will dir work?
+		forURI:      args.URI,
 	}, func(ctx context.Context, deps commandDeps) error {
 		view := deps.snapshot.View()
 		opts := view.Options()
@@ -823,7 +823,9 @@ func (c *commandHandler) RunVulncheckExp(ctx context.Context, args command.Vulnc
 		}
 
 		cmd := exec.Command(os.Args[0], "vulncheck", "-config", args.Pattern)
-		cmd.Dir = args.Dir.SpanURI().Filename()
+		// TODO(hyangah): if args.URI is not go.mod file, we need to
+		// adjust the directory accordingly.
+		cmd.Dir = filepath.Dir(args.URI.SpanURI().Filename())
 
 		var viewEnv []string
 		if e := opts.EnvSlice(); e != nil {

internal/lsp/command/interface.go

@@ -314,8 +314,8 @@ type DebuggingResult struct {
 }
 
 type VulncheckArgs struct {
-	// Dir is the directory from which vulncheck will run from.
-	Dir protocol.DocumentURI
+	// Any document in the directory from which govulncheck will run.
+	URI protocol.DocumentURI
 
 	// Package pattern. E.g. "", ".", "./...".
 	Pattern string

internal/lsp/source/api_json.go

@@ -745,7 +745,7 @@ var GeneratedAPIJSON = &APIJSON{
 			Command: "gopls.run_vulncheck_exp",
 			Title:   "Run vulncheck (experimental)",
 			Doc:     "Run vulnerability check (`govulncheck`).",
-			ArgDoc:  "{\n\t// Dir is the directory from which vulncheck will run from.\n\t\"Dir\": string,\n\t// Package pattern. E.g. \"\", \".\", \"./...\".\n\t\"Pattern\": string,\n}",
+			ArgDoc:  "{\n\t// Any document in the directory from which govulncheck will run.\n\t\"URI\": string,\n\t// Package pattern. E.g. \"\", \".\", \"./...\".\n\t\"Pattern\": string,\n}",
 		},
 		{
 			Command:   "gopls.start_debugging",

internal/lsp/source/options.go

@@ -514,7 +514,7 @@ type Hooks struct {
 	StaticcheckAnalyzers map[string]*Analyzer
 
 	// Govulncheck is the implementation of the Govulncheck gopls command.
-	Govulncheck func(context.Context, *packages.Config, command.VulncheckArgs) (command.VulncheckResult, error)
+	Govulncheck func(context.Context, *packages.Config, string) (command.VulncheckResult, error)
 }
 
 // InternalOptions contains settings that are not intended for use by the