本文整理汇总了Golang中github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/ipfs/go-datastore.Datastore.Get方法的典型用法代码示例。如果您正苦于以下问题：Golang Datastore.Get方法的具体用法？Golang Datastore.Get怎么用？Golang Datastore.Get使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/ipfs/go-datastore.Datastore的用法示例。
在下文中一共展示了Datastore.Get方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: LoadPinner
// LoadPinner loads a pinner and its keysets from the given datastore
func LoadPinner(d ds.Datastore, dserv mdag.DAGService) (Pinner, error) {
p := new(pinner)
rootKeyI, err := d.Get(pinDatastoreKey)
if err != nil {
return nil, fmt.Errorf("cannot load pin state: %v", err)
}
rootKeyBytes, ok := rootKeyI.([]byte)
if !ok {
return nil, fmt.Errorf("cannot load pin state: %s was not bytes", pinDatastoreKey)
}
rootKey := key.Key(rootKeyBytes)
ctx, cancel := context.WithTimeout(context.TODO(), time.Second*5)
defer cancel()
root, err := dserv.Get(ctx, rootKey)
if err != nil {
return nil, fmt.Errorf("cannot find pinning root object: %v", err)
}
internalPin := map[key.Key]struct{}{
rootKey: struct{}{},
}
recordInternal := func(k key.Key) {
internalPin[k] = struct{}{}
}
{ // load recursive set
recurseKeys, err := loadSet(ctx, dserv, root, linkRecursive, recordInternal)
if err != nil {
return nil, fmt.Errorf("cannot load recursive pins: %v", err)
}
p.recursePin = set.SimpleSetFromKeys(recurseKeys)
}
{ // load direct set
directKeys, err := loadSet(ctx, dserv, root, linkDirect, recordInternal)
if err != nil {
return nil, fmt.Errorf("cannot load direct pins: %v", err)
}
p.directPin = set.SimpleSetFromKeys(directKeys)
}
p.internalPin = internalPin
// assign services
p.dserv = dserv
p.dstore = d
return p, nil
}示例2: getRoutingProviders
func getRoutingProviders(ds datastore.Datastore, k key.Key) ([]*dhtpb.Message_Peer, error) {
e := log.EventBegin(context.Background(), "getProviders", &k)
defer e.Done()
var providers []*dhtpb.Message_Peer
if v, err := ds.Get(providerKey(k)); err == nil {
if data, ok := v.([]byte); ok {
var msg dhtpb.Message
if err := proto.Unmarshal(data, &msg); err != nil {
return nil, err
}
providers = append(providers, msg.GetProviderPeers()...)
}
}
return providers, nil
}示例3: getRoutingRecord
func getRoutingRecord(ds datastore.Datastore, k key.Key) (*dhtpb.Record, error) {
dskey := k.DsKey()
val, err := ds.Get(dskey)
if err != nil {
return nil, err
}
recordBytes, ok := val.([]byte)
if !ok {
return nil, fmt.Errorf("datastore had non byte-slice value for %v", dskey)
}
var record dhtpb.Record
if err := proto.Unmarshal(recordBytes, &record); err != nil {
return nil, errors.New("failed to unmarshal dht record from datastore")
}
return &record, nil
}