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Golint: unixfs/mod unixfs/test

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License: MIT
Signed-off-by: Hector Sanjuan <hector@protocol.ai>
This commit is contained in:
Hector Sanjuan
2018-02-06 13:08:58 +01:00
parent 16934b9c68
commit f074292e48
2 changed files with 22 additions and 9 deletions
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18
unixfs/mod/dagmodifier.go
View File

@ -1,3 +1,5 @@
// Package mod provides DAG modification utilities to, for example,
// insert additional nodes in a unixfs DAG or truncate them.
package mod package mod
import ( import (
@ -19,8 +21,12 @@ import (
ipld "gx/ipfs/Qme5bWv7wtjUNGsK2BNGVUFPKiuxWrsqrtvYwCLRw8YFES/go-ipld-format" ipld "gx/ipfs/Qme5bWv7wtjUNGsK2BNGVUFPKiuxWrsqrtvYwCLRw8YFES/go-ipld-format"
) )
var ErrSeekFail = errors.New("failed to seek properly") // Common errors
var ErrUnrecognizedWhence = errors.New("unrecognized whence") var (
ErrSeekFail = errors.New("failed to seek properly")
ErrUnrecognizedWhence = errors.New("unrecognized whence")
ErrNotUnixfs = fmt.Errorf("dagmodifier only supports unixfs nodes (proto or raw)")
)
// 2MB // 2MB
var writebufferSize = 1 << 21 var writebufferSize = 1 << 21
@ -46,8 +52,6 @@ type DagModifier struct {
read uio.DagReader read uio.DagReader
} }
var ErrNotUnixfs = fmt.Errorf("dagmodifier only supports unixfs nodes (proto or raw)")
// NewDagModifier returns a new DagModifier, the Cid prefix for newly // NewDagModifier returns a new DagModifier, the Cid prefix for newly
// created nodes will be inherted from the passed in node. If the Cid // created nodes will be inherted from the passed in node. If the Cid
// version if not 0 raw leaves will also be enabled. The Prefix and // version if not 0 raw leaves will also be enabled. The Prefix and
@ -412,7 +416,7 @@ func (dm *DagModifier) readPrep() error {
return nil return nil
} }
// Read data from this dag starting at the current offset // CtxReadFull reads data from this dag starting at the current offset
func (dm *DagModifier) CtxReadFull(ctx context.Context, b []byte) (int, error) { func (dm *DagModifier) CtxReadFull(ctx context.Context, b []byte) (int, error) {
err := dm.readPrep() err := dm.readPrep()
if err != nil { if err != nil {
@ -438,6 +442,8 @@ func (dm *DagModifier) HasChanges() bool {
return dm.wrBuf != nil return dm.wrBuf != nil
} }
// Seek modifies the offset according to whence. See unixfs/io for valid whence
// values.
func (dm *DagModifier) Seek(offset int64, whence int) (int64, error) { func (dm *DagModifier) Seek(offset int64, whence int) (int64, error) {
err := dm.Sync() err := dm.Sync()
if err != nil { if err != nil {
@ -479,6 +485,8 @@ func (dm *DagModifier) Seek(offset int64, whence int) (int64, error) {
return int64(dm.curWrOff), nil return int64(dm.curWrOff), nil
} }
// Truncate truncates the current Node to 'size' and replaces it with the
// new one.
func (dm *DagModifier) Truncate(size int64) error { func (dm *DagModifier) Truncate(size int64) error {
err := dm.Sync() err := dm.Sync()
if err != nil { if err != nil {

13
unixfs/test/utils.go
View File

@ -21,6 +21,7 @@ import (
ipld "gx/ipfs/Qme5bWv7wtjUNGsK2BNGVUFPKiuxWrsqrtvYwCLRw8YFES/go-ipld-format" ipld "gx/ipfs/Qme5bWv7wtjUNGsK2BNGVUFPKiuxWrsqrtvYwCLRw8YFES/go-ipld-format"
) )
// SizeSplitterGen creates a generator.
func SizeSplitterGen(size int64) chunk.SplitterGen { func SizeSplitterGen(size int64) chunk.SplitterGen {
return func(r io.Reader) chunk.Splitter { return func(r io.Reader) chunk.Splitter {
return chunk.NewSizeSplitter(r, size) return chunk.NewSizeSplitter(r, size)
@ -41,10 +42,13 @@ type NodeOpts struct {
RawLeavesUsed bool RawLeavesUsed bool
} }
var UseProtoBufLeaves = NodeOpts{Prefix: mdag.V0CidPrefix()} // Some shorthands for NodeOpts.
var UseRawLeaves = NodeOpts{Prefix: mdag.V0CidPrefix(), ForceRawLeaves: true, RawLeavesUsed: true} var (
var UseCidV1 = NodeOpts{Prefix: mdag.V1CidPrefix(), RawLeavesUsed: true} UseProtoBufLeaves = NodeOpts{Prefix: mdag.V0CidPrefix()}
var UseBlake2b256 NodeOpts UseRawLeaves = NodeOpts{Prefix: mdag.V0CidPrefix(), ForceRawLeaves: true, RawLeavesUsed: true}
UseCidV1 = NodeOpts{Prefix: mdag.V1CidPrefix(), RawLeavesUsed: true}
UseBlake2b256 NodeOpts
)
func init() { func init() {
UseBlake2b256 = UseCidV1 UseBlake2b256 = UseCidV1
@ -88,6 +92,7 @@ func GetRandomNode(t testing.TB, dserv ipld.DAGService, size int64, opts NodeOpt
return buf, node return buf, node
} }
// ArrComp checks if two byte slices are the same.
func ArrComp(a, b []byte) error { func ArrComp(a, b []byte) error {
if len(a) != len(b) { if len(a) != len(b) {
return fmt.Errorf("Arrays differ in length. %d != %d", len(a), len(b)) return fmt.Errorf("Arrays differ in length. %d != %d", len(a), len(b))