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threadstore.go
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threadstore.go
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package threads
import (
"fmt"
"io"
"github.com/libp2p/go-libp2p-core/peer"
pstore "github.com/libp2p/go-libp2p-core/peerstore"
"github.com/textileio/go-textile-core/thread"
tstore "github.com/textileio/go-textile-core/threadstore"
)
// threadstore is a collection of books for storing threads.
type threadstore struct {
tstore.KeyBook
tstore.AddrBook
tstore.ThreadMetadata
tstore.HeadBook
}
// NewThreadstore creates a new thread store from the given books.
func NewThreadstore(kb tstore.KeyBook, ab tstore.AddrBook, hb tstore.HeadBook, md tstore.ThreadMetadata) tstore.Threadstore {
return &threadstore{
KeyBook: kb,
AddrBook: ab,
HeadBook: hb,
ThreadMetadata: md,
}
}
// Close the threadstore.
func (ts *threadstore) Close() (err error) {
var errs []error
weakClose := func(name string, c interface{}) {
if cl, ok := c.(io.Closer); ok {
if err = cl.Close(); err != nil {
errs = append(errs, fmt.Errorf("%s error: %s", name, err))
}
}
}
weakClose("keybook", ts.KeyBook)
weakClose("addressbook", ts.AddrBook)
weakClose("headbook", ts.HeadBook)
weakClose("threadmetadata", ts.ThreadMetadata)
if len(errs) > 0 {
return fmt.Errorf("failed while closing threadstore; err(s): %q", errs)
}
return nil
}
// Threads returns a list of the thread IDs in the store.
func (ts *threadstore) Threads() (thread.IDSlice, error) {
set := map[thread.ID]struct{}{}
threadsFromKeys, err := ts.ThreadsFromKeys()
if err != nil {
return nil, err
}
for _, t := range threadsFromKeys {
set[t] = struct{}{}
}
threadsFromAddrs, err := ts.ThreadsFromAddrs()
if err != nil {
return nil, err
}
for _, t := range threadsFromAddrs {
set[t] = struct{}{}
}
ids := make(thread.IDSlice, 0, len(set))
for t := range set {
ids = append(ids, t)
}
return ids, nil
}
// AddThread adds a thread with keys.
func (ts *threadstore) AddThread(info thread.Info) error {
if info.FollowKey == nil {
return fmt.Errorf("a follow-key is required to add a thread")
}
if err := ts.AddFollowKey(info.ID, info.FollowKey); err != nil {
return err
}
if info.ReadKey != nil {
if err := ts.AddReadKey(info.ID, info.ReadKey); err != nil {
return err
}
}
return nil
}
// ThreadInfo returns thread info of the given id.
func (ts *threadstore) ThreadInfo(id thread.ID) (info thread.Info, err error) {
set := map[peer.ID]struct{}{}
logsWithKeys, err := ts.LogsWithKeys(id)
if err != nil {
return
}
for _, l := range logsWithKeys {
set[l] = struct{}{}
}
logsWithAddrs, err := ts.LogsWithAddrs(id)
if err != nil {
return
}
for _, l := range logsWithAddrs {
set[l] = struct{}{}
}
ids := make(peer.IDSlice, 0, len(set))
for l := range set {
ids = append(ids, l)
}
fk, err := ts.FollowKey(id)
if err != nil {
return
}
rk, err := ts.ReadKey(id)
if err != nil {
return
}
return thread.Info{
ID: id,
Logs: ids,
FollowKey: fk,
ReadKey: rk,
}, nil
}
// AddLog adds a log under the given thread.
func (ts *threadstore) AddLog(id thread.ID, lg thread.LogInfo) error {
err := ts.AddPubKey(id, lg.ID, lg.PubKey)
if err != nil {
return err
}
if lg.PrivKey != nil {
err = ts.AddPrivKey(id, lg.ID, lg.PrivKey)
if err != nil {
return err
}
}
err = ts.AddAddrs(id, lg.ID, lg.Addrs, pstore.PermanentAddrTTL)
if err != nil {
return err
}
err = ts.AddHeads(id, lg.ID, lg.Heads)
if err != nil {
return err
}
return nil
}
// LogInfo returns info about the given thread.
func (ts *threadstore) LogInfo(id thread.ID, lid peer.ID) (info thread.LogInfo, err error) {
pk, err := ts.PubKey(id, lid)
if err != nil {
return
}
sk, err := ts.PrivKey(id, lid)
if err != nil {
return
}
addrs, err := ts.Addrs(id, lid)
if err != nil {
return
}
heads, err := ts.Heads(id, lid)
if err != nil {
return
}
info.ID = lid
info.PubKey = pk
info.PrivKey = sk
info.Addrs = addrs
info.Heads = heads
return
}