Add golangci-lint

.circleci/config.yml

@@ -51,6 +51,15 @@ jobs:
         environment:
           TEST_NO_FUSE: 1
     - *store_gomod
+  golint:
+    <<: *defaults
+    steps:
+    - checkout
+    - *make_out_dirs
+    - *restore_gomod
+    - run: |
+        make -O test_go_lint
+    - *store_gomod
   gotest:
     <<: *defaults
     steps:

Rules.mk

@@ -136,7 +136,7 @@ help:
 	@echo '  test_go_test            - Run all go tests'
 	@echo '  test_go_expensive       - Run all go tests and compile on all platforms'
 	@echo '  test_go_race            - Run go tests with the race detector enabled'
-	@echo '  test_go_megacheck       - Run the `megacheck` vetting tool'
+	@echo '  test_go_lint            - Run the `golangci-lint` vetting tool'
 	@echo '  test_sharness_short     - Run short sharness tests'
 	@echo '  test_sharness_expensive - Run all sharness tests'
 	@echo '  coverage     - Collects coverage info from unit tests and sharness'

cmd/ipfs/util/ulimit_test.go

@@ -42,7 +42,7 @@ func TestManageInvalidNFds(t *testing.T) {
 
 	if changed, new, err := ManageFdLimit(); err == nil {
 		t.Errorf("ManageFdLimit should return an error: changed %t, new: %d", changed, new)
-	} else if err != nil {
+	} else {
 		flag := strings.Contains(err.Error(),
 			"failed to raise ulimit to IPFS_FD_MAX")
 		if !flag {

core/builder.go

@@ -31,7 +31,10 @@ func NewNode(ctx context.Context, cfg *BuildCfg) (*IpfsNode, error) {
 		// Note that some services use contexts to signal shutting down, which is
 		// very suboptimal. This needs to be here until that's addressed somehow
 		<-ctx.Done()
-		app.Stop(context.Background())
+		err := app.Stop(context.Background())
+		if err != nil {
+			log.Error("failure on stop: ", err)
+		}
 	}()
 
 	n.IsOnline = cfg.Online

core/commands/block.go

@@ -224,6 +224,9 @@ It takes a list of base58 encoded multihashes to remove.
 		// TODO: use batching coreapi when done
 		for _, b := range req.Arguments {
 			rp, err := api.ResolvePath(req.Context, path.New(b))
+			if err != nil {
+				return err
+			}
 
 			err = api.Block().Rm(req.Context, rp, options.Block.Force(force))
 			if err != nil {

core/corehttp/commands.go

@@ -61,10 +61,8 @@ func addHeadersFromConfig(c *cmdsHttp.ServerConfig, nc *config.Config) {
 	if acam := nc.API.HTTPHeaders[cmdsHttp.ACAMethods]; acam != nil {
 		c.SetAllowedMethods(acam...)
 	}
-	if acac := nc.API.HTTPHeaders[cmdsHttp.ACACredentials]; acac != nil {
-		for _, v := range acac {
-			c.SetAllowCredentials(strings.ToLower(v) == "true")
-		}
+	for _, v := range nc.API.HTTPHeaders[cmdsHttp.ACACredentials] {
+		c.SetAllowCredentials(strings.ToLower(v) == "true")
 	}
 
 	c.Headers = make(map[string][]string, len(nc.API.HTTPHeaders)+1)

core/coreunix/add_test.go

@@ -68,7 +68,7 @@ func TestAddMultipleGCLive(t *testing.T) {
 
 	go func() {
 		defer close(out)
-		adder.AddAllAndPin(slf)
+		_, _ = adder.AddAllAndPin(slf)
 		// Ignore errors for clarity - the real bug would be gc'ing files while adding them, not this resultant error
 	}()
 

core/node/builder.go

@@ -15,13 +15,10 @@ import (
 	ds "github.com/ipfs/go-datastore"
 	dsync "github.com/ipfs/go-datastore/sync"
 	cfg "github.com/ipfs/go-ipfs-config"
-	logging "github.com/ipfs/go-log"
 	ci "github.com/libp2p/go-libp2p-crypto"
 	peer "github.com/libp2p/go-libp2p-peer"
 )
 
-var log = logging.Logger("node")
-
 type BuildCfg struct {
 	// If online is set, the node will have networking enabled
 	Online bool

core/node/storage.go

@@ -91,7 +91,7 @@ func GcBlockstoreCtor(bb BaseBlocks) (gclocker blockstore.GCLocker, gcbs blockst
 
 // GcBlockstoreCtor wraps GcBlockstore and adds Filestore support
 func FilestoreBlockstoreCtor(repo repo.Repo, bb BaseBlocks) (gclocker blockstore.GCLocker, gcbs blockstore.GCBlockstore, bs blockstore.Blockstore, fstore *filestore.Filestore) {
-	gclocker, gcbs, bs = GcBlockstoreCtor(bb)
+	gclocker = blockstore.NewGCLocker()
 
 	// hash security
 	fstore = filestore.NewFilestore(bb, repo.FileManager())

filestore/fsrefstore.go

@@ -281,7 +281,7 @@ func (f *FileManager) putTo(b *posinfo.FilestoreNode, to putter) error {
 		if !f.AllowFiles {
 			return ErrFilestoreNotEnabled
 		}
-		if !filepath.HasPrefix(b.PosInfo.FullPath, f.root) {
+		if !filepath.HasPrefix(b.PosInfo.FullPath, f.root) { //nolint:staticcheck
 			return fmt.Errorf("cannot add filestore references outside ipfs root (%s)", f.root)
 		}
 

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/fatih/color v1.7.0 // indirect
 	github.com/fsnotify/fsnotify v1.4.7
 	github.com/gogo/protobuf v1.2.1
+	github.com/golangci/golangci-lint v1.16.0
 	github.com/hashicorp/go-multierror v1.0.0
 	github.com/hashicorp/golang-lru v0.5.1
 	github.com/hsanjuan/go-libp2p-http v0.0.2
@@ -120,9 +121,9 @@ require (
 	go.uber.org/goleak v0.10.0 // indirect
 	go.uber.org/multierr v1.1.0 // indirect
 	golang.org/x/net v0.0.0-20190424112056-4829fb13d2c6 // indirect
+	golang.org/x/sync v0.0.0-20190423024810-112230192c58 // indirect
 	golang.org/x/sys v0.0.0-20190426135247-a129542de9ae
 	golang.org/x/text v0.3.2 // indirect
-	golang.org/x/tools v0.0.0-20190425222832-ad9eeb80039a // indirect
 	golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373 // indirect
 	gopkg.in/cheggaaa/pb.v1 v1.0.28
 	gotest.tools/gotestsum v0.3.4