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Enable golint part of #14756

Browse source 
pkg/broadcastwriter
pkg/graphdb
pkg/httputils
pkg/ioutils

Signed-off-by: Lei Jitang <leijitang@huawei.com>
This commit is contained in:
Lei Jitang 2015-08-03 09:45:05 +08:00
parent e496d40107
commit 27a8f9937e
12 changed files with 64 additions and 32 deletions
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4
hack/make/validate-lint
View file

@ -36,10 +36,14 @@ packages=(
graph
image
integration-cli
pkg/broadcastwriter
pkg/chrootarchive
pkg/directory
pkg/fileutils
pkg/graphdb
pkg/homedir
pkg/httputils
pkg/ioutils
pkg/listenbuffer
pkg/mflag
pkg/mflag/example

1
pkg/broadcastwriter/broadcastwriter.go
View file

@ -44,6 +44,7 @@ func (w *BroadcastWriter) Clean() error {
return nil
}
// New creates a new BroadcastWriter.
func New() *BroadcastWriter {
return &BroadcastWriter{
writers: make(map[io.WriteCloser]struct{}),

4
pkg/graphdb/conn_sqlite3_unix.go
View file

@ -2,4 +2,6 @@
package graphdb
import _ "code.google.com/p/gosqlite/sqlite3" // registers sqlite
import (
_ "code.google.com/p/gosqlite/sqlite3" // registers sqlite
)

4
pkg/graphdb/conn_sqlite3_windows.go
View file

@ -2,4 +2,6 @@
package graphdb
import _ "github.com/mattn/go-sqlite3" // registers sqlite
import (
_ "github.com/mattn/go-sqlite3" // registers sqlite
)

1
pkg/graphdb/conn_unsupported.go
View file

@ -2,6 +2,7 @@
package graphdb
// NewSqliteConn return a new sqlite connection.
func NewSqliteConn(root string) (*Database, error) {
panic("Not implemented")
}

45
pkg/graphdb/graphdb.go
View file

@ -29,28 +29,28 @@ const (
`
)
// Entity with a unique id
// Entity with a unique id.
type Entity struct {
id string
}
// An Edge connects two entities together
// An Edge connects two entities together.
type Edge struct {
EntityID string
Name string
ParentID string
}
// Entities stores the list of entities
// Entities stores the list of entities.
type Entities map[string]*Entity
// Edges stores the relationships between entities
// Edges stores the relationships between entities.
type Edges []*Edge
// WalkFunc is a function invoked to process an individual entity
// WalkFunc is a function invoked to process an individual entity.
type WalkFunc func(fullPath string, entity *Entity) error
// Database is a graph database for storing entities and their relationships
// Database is a graph database for storing entities and their relationships.
type Database struct {
conn *sql.DB
mux sync.RWMutex
@ -80,7 +80,7 @@ func IsNonUniqueNameError(err error) bool {
return false
}
// NewDatabase creates a new graph database initialized with a root entity
// NewDatabase creates a new graph database initialized with a root entity.
func NewDatabase(conn *sql.DB) (*Database, error) {
if conn == nil {
return nil, fmt.Errorf("Database connection cannot be nil")
@ -130,12 +130,12 @@ func NewDatabase(conn *sql.DB) (*Database, error) {
return db, nil
}
// Close the underlying connection to the database
// Close the underlying connection to the database.
func (db *Database) Close() error {
return db.conn.Close()
}
// Set the entity id for a given path
// Set the entity id for a given path.
func (db *Database) Set(fullPath, id string) (*Entity, error) {
db.mux.Lock()
defer db.mux.Unlock()
@ -171,7 +171,7 @@ func (db *Database) Set(fullPath, id string) (*Entity, error) {
return e, nil
}
// Exists returns true if a name already exists in the database
// Exists returns true if a name already exists in the database.
func (db *Database) Exists(name string) bool {
db.mux.RLock()
defer db.mux.RUnlock()
@ -198,14 +198,14 @@ func (db *Database) setEdge(parentPath, name string, e *Entity, tx *sql.Tx) erro
return nil
}
// RootEntity returns the root "/" entity for the database
// RootEntity returns the root "/" entity for the database.
func (db *Database) RootEntity() *Entity {
return &Entity{
id: "0",
}
}
// Get returns the entity for a given path
// Get returns the entity for a given path.
func (db *Database) Get(name string) *Entity {
db.mux.RLock()
defer db.mux.RUnlock()
@ -242,8 +242,8 @@ func (db *Database) get(name string) (*Entity, error) {
}
// List all entities by from the name
// The key will be the full path of the entity
// List all entities by from the name.
// The key will be the full path of the entity.
func (db *Database) List(name string, depth int) Entities {
db.mux.RLock()
defer db.mux.RUnlock()
@ -282,7 +282,7 @@ func (db *Database) Walk(name string, walkFunc WalkFunc, depth int) error {
return nil
}
// Children returns the children of the specified entity
// Children returns the children of the specified entity.
func (db *Database) Children(name string, depth int) ([]WalkMeta, error) {
db.mux.RLock()
defer db.mux.RUnlock()
@ -295,7 +295,7 @@ func (db *Database) Children(name string, depth int) ([]WalkMeta, error) {
return db.children(e, name, depth, nil)
}
// Parents returns the parents of a specified entity
// Parents returns the parents of a specified entity.
func (db *Database) Parents(name string) ([]string, error) {
db.mux.RLock()
defer db.mux.RUnlock()
@ -307,7 +307,7 @@ func (db *Database) Parents(name string) ([]string, error) {
return db.parents(e)
}
// Refs returns the refrence count for a specified id
// Refs returns the refrence count for a specified id.
func (db *Database) Refs(id string) int {
db.mux.RLock()
defer db.mux.RUnlock()
@ -319,7 +319,7 @@ func (db *Database) Refs(id string) int {
return count
}
// RefPaths returns all the id's path references
// RefPaths returns all the id's path references.
func (db *Database) RefPaths(id string) Edges {
db.mux.RLock()
defer db.mux.RUnlock()
@ -347,7 +347,7 @@ func (db *Database) RefPaths(id string) Edges {
return refs
}
// Delete the reference to an entity at a given path
// Delete the reference to an entity at a given path.
func (db *Database) Delete(name string) error {
db.mux.Lock()
defer db.mux.Unlock()
@ -446,6 +446,7 @@ func (db *Database) Rename(currentName, newName string) error {
return nil
}
// WalkMeta stores the walk metadata.
type WalkMeta struct {
Parent *Entity
Entity *Entity
@ -522,7 +523,7 @@ func (db *Database) parents(e *Entity) (parents []string, err error) {
return parents, nil
}
// Return the entity based on the parent path and name
// Return the entity based on the parent path and name.
func (db *Database) child(parent *Entity, name string) *Entity {
var id string
if err := db.conn.QueryRow("SELECT entity_id FROM edge WHERE parent_id = ? AND name = ?;", parent.id, name).Scan(&id); err != nil {
@ -531,12 +532,12 @@ func (db *Database) child(parent *Entity, name string) *Entity {
return &Entity{id}
}
// ID returns the id used to reference this entity
// ID returns the id used to reference this entity.
func (e *Entity) ID() string {
return e.id
}
// Paths returns the paths sorted by depth
// Paths returns the paths sorted by depth.
func (e Entities) Paths() []string {
out := make([]string, len(e))
var i int

9
pkg/httputils/httputils.go
View file

@ -10,7 +10,7 @@ import (
"github.com/docker/docker/pkg/jsonmessage"
)
// Download requests a given URL and returns an io.Reader
// Download requests a given URL and returns an io.Reader.
func Download(url string) (resp *http.Response, err error) {
if resp, err = http.Get(url); err != nil {
return nil, err
@ -21,7 +21,7 @@ func Download(url string) (resp *http.Response, err error) {
return resp, nil
}
// NewHTTPRequestError returns a JSON response error
// NewHTTPRequestError returns a JSON response error.
func NewHTTPRequestError(msg string, res *http.Response) error {
return &jsonmessage.JSONError{
Message: msg,
@ -29,14 +29,15 @@ func NewHTTPRequestError(msg string, res *http.Response) error {
}
}
// ServerHeader contains the server information.
type ServerHeader struct {
App string // docker
Ver string // 1.8.0-dev
OS string // windows or linux
}
// parseServerHeader extracts pieces from am HTTP server header
// which is in the format "docker/version (os)" eg docker/1.8.0-dev (windows)
// ParseServerHeader extracts pieces from an HTTP server header
// which is in the format "docker/version (os)" eg docker/1.8.0-dev (windows).
func ParseServerHeader(hdr string) (*ServerHeader, error) {
re := regexp.MustCompile(`.*\((.+)\).*$`)
r := &ServerHeader{}

1
pkg/httputils/mimetype.go
View file

@ -5,6 +5,7 @@ import (
"net/http"
)
// MimeTypes stores the MIME content type.
var MimeTypes = struct {
TextPlain string
Tar string

2
pkg/ioutils/multireader.go
View file

@ -53,7 +53,7 @@ func (r *multiReadSeeker) Seek(offset int64, whence int) (int64, error) {
}
if rdrOffset == s && i != len(r.readers)-1 {
idx += 1
idx++
rdrOffset = 0
}
r.pos = &pos{idx, rdrOffset}

13
pkg/ioutils/readers.go
View file

@ -23,6 +23,7 @@ func (r *readCloserWrapper) Close() error {
return r.closer()
}
// NewReadCloserWrapper returns a new io.ReadCloser.
func NewReadCloserWrapper(r io.Reader, closer func() error) io.ReadCloser {
return &readCloserWrapper{
Reader: r,
@ -43,6 +44,7 @@ func (r *readerErrWrapper) Read(p []byte) (int, error) {
return n, err
}
// NewReaderErrWrapper returns a new io.Reader.
func NewReaderErrWrapper(r io.Reader, closer func()) io.Reader {
return &readerErrWrapper{
reader: r,
@ -68,7 +70,8 @@ type bufReader struct {
maxReadDataReset int64
}
func NewBufReader(r io.Reader) *bufReader {
// NewBufReader returns a new bufReader.
func NewBufReader(r io.Reader) io.ReadCloser {
timeout := rand.New(rndSrc).Intn(120) + 180
reader := &bufReader{
@ -86,7 +89,8 @@ func NewBufReader(r io.Reader) *bufReader {
return reader
}
func NewBufReaderWithDrainbufAndBuffer(r io.Reader, drainBuffer []byte, buffer *bytes.Buffer) *bufReader {
// NewBufReaderWithDrainbufAndBuffer returns a BufReader with drainBuffer and buffer.
func NewBufReaderWithDrainbufAndBuffer(r io.Reader, drainBuffer []byte, buffer *bytes.Buffer) io.ReadCloser {
reader := &bufReader{
buf: buffer,
drainBuf: drainBuffer,
@ -210,6 +214,7 @@ func (r *bufReader) Read(p []byte) (n int, err error) {
}
}
// Close closes the bufReader
func (r *bufReader) Close() error {
closer, ok := r.reader.(io.ReadCloser)
if !ok {
@ -218,6 +223,7 @@ func (r *bufReader) Close() error {
return closer.Close()
}
// HashData returns the sha256 sum of src.
func HashData(src io.Reader) (string, error) {
h := sha256.New()
if _, err := io.Copy(h, src); err != nil {
@ -226,6 +232,8 @@ func HashData(src io.Reader) (string, error) {
return "sha256:" + hex.EncodeToString(h.Sum(nil)), nil
}
// OnEOFReader wraps a io.ReadCloser and a function
// the fuction will run at the end of file or close the file.
type OnEOFReader struct {
Rc io.ReadCloser
Fn func()
@ -239,6 +247,7 @@ func (r *OnEOFReader) Read(p []byte) (n int, err error) {
return
}
// Close closes the file and run the function.
func (r *OnEOFReader) Close() error {
err := r.Rc.Close()
r.runFunc()

4
pkg/ioutils/writeflusher.go
View file

@ -6,6 +6,7 @@ import (
"sync"
)
// WriteFlusher wraps the Write and Flush operation.
type WriteFlusher struct {
sync.Mutex
w io.Writer
@ -30,12 +31,15 @@ func (wf *WriteFlusher) Flush() {
wf.flusher.Flush()
}
// Flushed returns the state of flushed.
// If it's flushed, return true, or else it return false.
func (wf *WriteFlusher) Flushed() bool {
wf.Lock()
defer wf.Unlock()
return wf.flushed
}
// NewWriteFlusher returns a new WriteFlusher.
func NewWriteFlusher(w io.Writer) *WriteFlusher {
var flusher http.Flusher
if f, ok := w.(http.Flusher); ok {

8
pkg/ioutils/writers.go
View file

@ -2,6 +2,7 @@ package ioutils
import "io"
// NopWriter represents a type which write operation is nop.
type NopWriter struct{}
func (*NopWriter) Write(buf []byte) (int, error) {
@ -14,12 +15,15 @@ type nopWriteCloser struct {
func (w *nopWriteCloser) Close() error { return nil }
// NopWriteCloser returns a nopWriteCloser.
func NopWriteCloser(w io.Writer) io.WriteCloser {
return &nopWriteCloser{w}
}
// NopFlusher represents a type which flush opetatin is nop.
type NopFlusher struct{}
// Flush is a nop operation.
func (f *NopFlusher) Flush() {}
type writeCloserWrapper struct {
@ -31,6 +35,7 @@ func (r *writeCloserWrapper) Close() error {
return r.closer()
}
// NewWriteCloserWrapper returns a new io.WriteCloser.
func NewWriteCloserWrapper(r io.Writer, closer func() error) io.WriteCloser {
return &writeCloserWrapper{
Writer: r,
@ -38,7 +43,7 @@ func NewWriteCloserWrapper(r io.Writer, closer func() error) io.WriteCloser {
}
}
// Wrap a concrete io.Writer and hold a count of the number
// WriteCounter wraps a concrete io.Writer and hold a count of the number
// of bytes written to the writer during a "session".
// This can be convenient when write return is masked
// (e.g., json.Encoder.Encode())
@ -47,6 +52,7 @@ type WriteCounter struct {
Writer io.Writer
}
// NewWriteCounter returns a new WriteCounter.
func NewWriteCounter(w io.Writer) *WriteCounter {
return &WriteCounter{
Writer: w,