use grep to find a/an misuse

Signed-off-by: allencloud <allen.sun@daocloud.io>

libnetwork/api/api_test.go

@@ -2304,7 +2304,7 @@ func (nip *notimpl) NotImplemented() {}
 type inter struct{}
 
 func (it *inter) Error() string {
-	return "I am a internal error"
+	return "I am an internal error"
 }
 func (it *inter) Internal() {}
 

libnetwork/client/network.go

@@ -207,7 +207,7 @@ func (cli *NetworkCli) CmdNetworkInfo(chain string, args ...string) error {
 }
 
 // Helper function to predict if a string is a name or id or partial-id
-// This provides a best-effort mechanism to identify a id with the help of GET Filter APIs
+// This provides a best-effort mechanism to identify an id with the help of GET Filter APIs
 // Being a UI, its most likely that name will be used by the user, which is used to lookup
 // the corresponding ID. If ID is not found, this function will assume that the passed string
 // is an ID by itself.

libnetwork/cmd/dnet/dnet.go

@@ -287,7 +287,7 @@ func startTestDriver() error {
 	mux := http.NewServeMux()
 	server := httptest.NewServer(mux)
 	if server == nil {
-		return fmt.Errorf("Failed to start a HTTP Server")
+		return fmt.Errorf("Failed to start an HTTP Server")
 	}
 
 	mux.HandleFunc("/Plugin.Activate", func(w http.ResponseWriter, r *http.Request) {

libnetwork/datastore/datastore.go

@@ -62,13 +62,13 @@ type datastore struct {
 	sync.Mutex
 }
 
-// KVObject is  Key/Value interface used by objects to be part of the DataStore
+// KVObject is Key/Value interface used by objects to be part of the DataStore
 type KVObject interface {
-	// Key method lets an object to provide the Key to be used in KV Store
+	// Key method lets an object provide the Key to be used in KV Store
 	Key() []string
-	// KeyPrefix method lets an object to return immediate parent key that can be used for tree walk
+	// KeyPrefix method lets an object return immediate parent key that can be used for tree walk
 	KeyPrefix() []string
-	// Value method lets an object to marshal its content to be stored in the KV store
+	// Value method lets an object marshal its content to be stored in the KV store
 	Value() []byte
 	// SetValue is used by the datastore to set the object's value when loaded from the data store.
 	SetValue([]byte) error

libnetwork/docs/ipam.md

@@ -116,7 +116,7 @@ During registration, the remote driver will receive a POST message to the URL `/
 
 ### RequestPool
 
-This API is for registering a address pool with the IPAM driver. Multiple identical calls must return the same result.
+This API is for registering an address pool with the IPAM driver. Multiple identical calls must return the same result.
 It is the IPAM driver's responsibility to keep a reference count for the pool.
 
 ```go

libnetwork/driverapi/driverapi.go

@@ -115,7 +115,7 @@ type InterfaceNameInfo interface {
 // JoinInfo represents a set of resources that the driver has the ability to provide during
 // join time.
 type JoinInfo interface {
-	// InterfaceName returns a InterfaceNameInfo go interface to facilitate
+	// InterfaceName returns an InterfaceNameInfo go interface to facilitate
 	// setting the names for the interface.
 	InterfaceName() InterfaceNameInfo
 

libnetwork/drivers/ipvlan/ipvlan_setup.go

@@ -31,7 +31,7 @@ func createIPVlan(containerIfName, parent, ipvlanMode string) (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("error occoured looking up the %s parent iface %s error: %s", ipvlanType, parent, err)
 	}
-	// Create a ipvlan link
+	// Create an ipvlan link
 	ipvlan := &netlink.IPVlan{
 		LinkAttrs: netlink.LinkAttrs{
 			Name:        containerIfName,

libnetwork/drivers/ipvlan/ipvlan_setup_test.go

@@ -15,7 +15,7 @@ func TestValidateLink(t *testing.T) {
 	if ok := parentExists(validIface); !ok {
 		t.Fatalf("failed validating loopback %s", validIface)
 	}
-	// test a invalid parent interface validation
+	// test an invalid parent interface validation
 	if ok := parentExists(invalidIface); ok {
 		t.Fatalf("failed to invalidate interface %s", invalidIface)
 	}
@@ -33,17 +33,17 @@ func TestValidateSubLink(t *testing.T) {
 	if err != nil {
 		t.Fatalf("failed subinterface validation: %v", err)
 	}
-	// test a invalid vid with a valid parent link
+	// test an invalid vid with a valid parent link
 	_, _, err = parseVlan(invalidSubIface1)
 	if err == nil {
 		t.Fatalf("failed subinterface validation test: %s", invalidSubIface1)
 	}
-	// test a valid vid with a valid parent link with a invalid delimiter
+	// test a valid vid with a valid parent link with an invalid delimiter
 	_, _, err = parseVlan(invalidSubIface2)
 	if err == nil {
 		t.Fatalf("failed subinterface validation test: %v", invalidSubIface2)
 	}
-	// test a invalid parent link with a valid vid
+	// test an invalid parent link with a valid vid
 	_, _, err = parseVlan(invalidSubIface3)
 	if err == nil {
 		t.Fatalf("failed subinterface validation test: %v", invalidSubIface3)

libnetwork/drivers/macvlan/macvlan_setup_test.go

@@ -15,7 +15,7 @@ func TestValidateLink(t *testing.T) {
 	if ok := parentExists(validIface); !ok {
 		t.Fatalf("failed validating loopback %s", validIface)
 	}
-	// test a invalid parent interface validation
+	// test an invalid parent interface validation
 	if ok := parentExists(invalidIface); ok {
 		t.Fatalf("failed to invalidate interface %s", invalidIface)
 	}
@@ -33,17 +33,17 @@ func TestValidateSubLink(t *testing.T) {
 	if err != nil {
 		t.Fatalf("failed subinterface validation: %v", err)
 	}
-	// test a invalid vid with a valid parent link
+	// test an invalid vid with a valid parent link
 	_, _, err = parseVlan(invalidSubIface1)
 	if err == nil {
 		t.Fatalf("failed subinterface validation test: %s", invalidSubIface1)
 	}
-	// test a valid vid with a valid parent link with a invalid delimiter
+	// test a valid vid with a valid parent link with an invalid delimiter
 	_, _, err = parseVlan(invalidSubIface2)
 	if err == nil {
 		t.Fatalf("failed subinterface validation test: %v", invalidSubIface2)
 	}
-	// test a invalid parent link with a valid vid
+	// test an invalid parent link with a valid vid
 	_, _, err = parseVlan(invalidSubIface3)
 	if err == nil {
 		t.Fatalf("failed subinterface validation test: %v", invalidSubIface3)

libnetwork/drivers/remote/driver_test.go

@@ -46,7 +46,7 @@ func setupPlugin(t *testing.T, name string, mux *http.ServeMux) func() {
 
 	server := httptest.NewServer(mux)
 	if server == nil {
-		t.Fatal("Failed to start a HTTP Server")
+		t.Fatal("Failed to start an HTTP Server")
 	}
 
 	if err := ioutil.WriteFile(fmt.Sprintf("/etc/docker/plugins/%s.spec", name), []byte(server.URL), 0644); err != nil {

libnetwork/hostdiscovery/hostdiscovery_test.go

@@ -30,7 +30,7 @@ func TestDiff(t *testing.T) {
 	updated = mapset.NewSetFromSlice([]interface{}{addedIP})
 	added, removed = diff(existing, updated)
 	if len(removed) != 2 {
-		t.Fatalf("Diff failed for an remove update. Expecting 2 element, but got %d elements", len(removed))
+		t.Fatalf("Diff failed for a remove update. Expecting 2 element, but got %d elements", len(removed))
 	}
 	if len(added) != 1 {
 		t.Fatalf("Diff failed for add use-case. Expecting 1 element, but got %d elements", len(added))
@@ -46,7 +46,7 @@ func TestAddedCallback(t *testing.T) {
 	removed := false
 	hd.processCallback(update, func() {}, func(hosts []net.IP) { added = true }, func(hosts []net.IP) { removed = true })
 	if !added {
-		t.Fatalf("Expecting a Added callback notification. But none received")
+		t.Fatalf("Expecting an Added callback notification. But none received")
 	}
 }
 

libnetwork/ipamapi/contract.go

@@ -27,7 +27,7 @@ const (
 type Callback interface {
 	// RegisterIpamDriver provides a way for Remote drivers to dynamically register with libnetwork
 	RegisterIpamDriver(name string, driver Ipam) error
-	// RegisterIpamDriverWithCapabilities provides a way for Remote drivers to dynamically register with libnetwork and specify cpaabilities
+	// RegisterIpamDriverWithCapabilities provides a way for Remote drivers to dynamically register with libnetwork and specify capabilities
 	RegisterIpamDriverWithCapabilities(name string, driver Ipam, capability *Capability) error
 }
 

libnetwork/ipams/remote/remote_test.go

@@ -42,7 +42,7 @@ func setupPlugin(t *testing.T, name string, mux *http.ServeMux) func() {
 
 	server := httptest.NewServer(mux)
 	if server == nil {
-		t.Fatal("Failed to start a HTTP Server")
+		t.Fatal("Failed to start an HTTP Server")
 	}
 
 	if err := ioutil.WriteFile(fmt.Sprintf("/etc/docker/plugins/%s.spec", name), []byte(server.URL), 0644); err != nil {

libnetwork/ipamutils/utils.go

@@ -1,4 +1,4 @@
-// Package ipamutils provides utililty functions for ipam management
+// Package ipamutils provides utility functions for ipam management
 package ipamutils
 
 import (
@@ -17,7 +17,7 @@ var (
 	initNetworksOnce sync.Once
 )
 
-// InitNetworks initializes the pre-defined networks used by the  built-in IP allocator
+// InitNetworks initializes the pre-defined networks used by the built-in IP allocator
 func InitNetworks() {
 	initNetworksOnce.Do(func() {
 		PredefinedBroadNetworks = initBroadPredefinedNetworks()

libnetwork/ipvs/ipvs.go

@@ -94,7 +94,7 @@ func (i *Handle) DelService(s *Service) error {
 	return i.doCmd(s, nil, ipvsCmdDelService)
 }
 
-// NewDestination creates an new real server in the passed ipvs
+// NewDestination creates a new real server in the passed ipvs
 // service which should already be existing in the passed handle.
 func (i *Handle) NewDestination(s *Service, d *Destination) error {
 	return i.doCmd(s, d, ipvsCmdNewDest)

libnetwork/libnetwork_test.go

@@ -1115,7 +1115,7 @@ func TestEndpointJoin(t *testing.T) {
 	}
 
 	if info.Sandbox() == nil {
-		t.Fatalf("Expected an non-empty sandbox key for a joined endpoint. Instead found a empty sandbox key")
+		t.Fatalf("Expected a non-empty sandbox key for a joined endpoint. Instead found an empty sandbox key")
 	}
 
 	// Check endpoint provided container information
@@ -1314,7 +1314,7 @@ func externalKeyTest(t *testing.T, reexec bool) {
 			t.Fatalf("SetExternalKey must fail if the corresponding namespace is not created")
 		}
 	} else {
-		// Setting an non-existing key (namespace) must fail
+		// Setting a non-existing key (namespace) must fail
 		if err := sbox.SetKey("this-must-fail"); err == nil {
 			t.Fatalf("Setkey must fail if the corresponding namespace is not created")
 		}
@@ -2018,7 +2018,7 @@ func TestInvalidRemoteDriver(t *testing.T) {
 	mux := http.NewServeMux()
 	server := httptest.NewServer(mux)
 	if server == nil {
-		t.Fatal("Failed to start a HTTP Server")
+		t.Fatal("Failed to start an HTTP Server")
 	}
 	defer server.Close()
 
@@ -2069,7 +2069,7 @@ func TestValidRemoteDriver(t *testing.T) {
 	mux := http.NewServeMux()
 	server := httptest.NewServer(mux)
 	if server == nil {
-		t.Fatal("Failed to start a HTTP Server")
+		t.Fatal("Failed to start an HTTP Server")
 	}
 	defer server.Close()
 

libnetwork/netutils/utils.go

@@ -170,7 +170,7 @@ func ReverseIP(IP string) string {
 	return strings.Join(reverseIP, ".")
 }
 
-// ParseAlias parses and validates the specified string as a alias format (name:alias)
+// ParseAlias parses and validates the specified string as an alias format (name:alias)
 func ParseAlias(val string) (string, string, error) {
 	if val == "" {
 		return "", "", fmt.Errorf("empty string specified for alias")

libnetwork/network.go

@@ -1141,7 +1141,7 @@ func (n *network) requestPoolHelper(ipam ipamapi.Ipam, addressSpace, preferredPo
 		}
 
 		// If the network belongs to global scope or the pool was
-		// explicitely chosen or it is invalid, do not perform the overlap check.
+		// explicitly chosen or it is invalid, do not perform the overlap check.
 		if n.Scope() == datastore.GlobalScope || preferredPool != "" || !types.IsIPNetValid(pool) {
 			return poolID, pool, meta, nil
 		}
@@ -1165,7 +1165,7 @@ func (n *network) requestPoolHelper(ipam ipamapi.Ipam, addressSpace, preferredPo
 		}()
 
 		// If this is a preferred pool request and the network
-		// is local scope and there is a overlap, we fail the
+		// is local scope and there is an overlap, we fail the
 		// network creation right here. The pool will be
 		// released in the defer.
 		if preferredPool != "" {

libnetwork/options/options.go

@@ -41,7 +41,7 @@ func (e TypeMismatchError) Error() string {
 	return fmt.Sprintf("type mismatch, field %s require type %v, actual type %v", e.Field, e.ExpectType, e.ActualType)
 }
 
-// Generic is an basic type to store arbitrary settings.
+// Generic is a basic type to store arbitrary settings.
 type Generic map[string]interface{}
 
 // NewGeneric returns a new Generic instance.

libnetwork/service_linux.go

@@ -225,7 +225,7 @@ func (n *network) rmLBBackend(ip, vip net.IP, fwMark uint32, rmService bool) {
 func (sb *sandbox) addLBBackend(ip, vip net.IP, fwMark uint32, addService bool) {
 	i, err := ipvs.New(sb.Key())
 	if err != nil {
-		logrus.Errorf("Failed to create a ipvs handle for sbox %s: %v", sb.Key(), err)
+		logrus.Errorf("Failed to create an ipvs handle for sbox %s: %v", sb.Key(), err)
 		return
 	}
 	defer i.Close()
@@ -267,7 +267,7 @@ func (sb *sandbox) addLBBackend(ip, vip net.IP, fwMark uint32, addService bool)
 func (sb *sandbox) rmLBBackend(ip, vip net.IP, fwMark uint32, rmService bool) {
 	i, err := ipvs.New(sb.Key())
 	if err != nil {
-		logrus.Errorf("Failed to create a ipvs handle for sbox %s: %v", sb.Key(), err)
+		logrus.Errorf("Failed to create an ipvs handle for sbox %s: %v", sb.Key(), err)
 		return
 	}
 	defer i.Close()

libnetwork/types/types.go

@@ -226,7 +226,7 @@ const (
 	UDP = 17
 )
 
-// Protocol represents a IP protocol number
+// Protocol represents an IP protocol number
 type Protocol uint8
 
 func (p Protocol) String() string {