more work on implementing resolve

db/db.go

@@ -7,6 +7,7 @@ import (
 	"log"
 	"math"
 	"os"
+	"sort"
 	"strings"
 	"time"
 
@@ -16,11 +17,28 @@ import (
 	"github.com/linxGnu/grocksdb"
 )
 
+const (
+	nOriginalClaimExpirationTime       = 262974
+	nExtendedClaimExpirationTime       = 2102400
+	nExtendedClaimExpirationForkHeight = 400155
+	nNormalizedNameForkHeight          = 539940 // targeting 21 March 2019
+	nMinTakeoverWorkaroundHeight       = 496850
+	nMaxTakeoverWorkaroundHeight       = 658300 // targeting 30 Oct 2019
+	nWitnessForkHeight                 = 680770 // targeting 11 Dec 2019
+	nAllClaimsInMerkleForkHeight       = 658310 // targeting 30 Oct 2019
+	proportionalDelayFactor            = 32
+	maxTakeoverDelay                   = 4032
+)
+
 type ReadOnlyDBColumnFamily struct {
 	DB               *grocksdb.DB
 	Handles          map[string]*grocksdb.ColumnFamilyHandle
 	Opts             *grocksdb.ReadOptions
 	TxCounts         []uint32
+	BlockedStreams   map[string][]byte
+	BlockedChannels  map[string][]byte
+	FilteredStreams  map[string][]byte
+	FilteredChannels map[string][]byte
 }
 
 type ResolveResult struct {
@@ -227,6 +245,27 @@ func ParseURL(url string) (parsed *URL, err error) {
 	return NewURL(), nil
 }
 
+// BisectRight returns the index of the first element in the list that is greater than or equal to the value.
+func BisectRight(arr []uint32, val uint32) uint32 {
+	i := sort.Search(len(arr), func(i int) bool { return arr[i] >= val })
+	return uint32(i)
+}
+
+func GetExpirationHeight(lastUpdatedHeight uint32) uint32 {
+	return GetExpirationHeightFull(lastUpdatedHeight, false)
+}
+
+func GetExpirationHeightFull(lastUpdatedHeight uint32, extended bool) uint32 {
+	if extended {
+		return lastUpdatedHeight + nExtendedClaimExpirationTime
+	}
+	if lastUpdatedHeight < nExtendedClaimExpirationForkHeight {
+		return lastUpdatedHeight + nOriginalClaimExpirationTime
+	}
+	return lastUpdatedHeight + nExtendedClaimExpirationTime
+}
+
+// PrepareResolveResult prepares a ResolveResult for use.
 func PrepareResolveResult(
 	db *ReadOnlyDBColumnFamily,
 	txNum uint32,
@@ -255,8 +294,9 @@ func PrepareResolveResult(
 	   created_height = bisect_right(self.tx_counts, root_tx_num)
 	   last_take_over_height = controlling_claim.height
 	*/
-	height := txNum
+	// FIXME: Actually do this
-	createdHeight := rootTxNum
+	height := BisectRight(db.TxCounts, txNum)
+	createdHeight := BisectRight(db.TxCounts, rootTxNum)
 	lastTakeoverHeight := controllingClaim.Height
 
 	/*
@@ -264,8 +304,7 @@ func PrepareResolveResult(
 	   support_amount = self.get_support_amount(claim_hash)
 	   claim_amount = self.get_cached_claim_txo(claim_hash).amount
 	*/
-	//expirationHeight := activationHeight + int(controllingClaim.Expiration)
+	expirationHeight := GetExpirationHeight(height)
-	expirationHeight := activationHeight + height // FIXME
 	supportAmount, err := GetSupportAmount(db, claimHash)
 	if err != nil {
 		return nil, err
@@ -397,26 +436,34 @@ func GetShortClaimIdUrl(db *ReadOnlyDBColumnFamily, name string, normalizedName
 	       print(f"{claim_id} has a collision")
 	       return f'{name}#{claim_id}'
 	*/
-	// prefix := []byte{prefixes.ClaimShortIdPrefix}
+	prefix := []byte{prefixes.ClaimShortIdPrefix}
-	// cfName := string(prefix)
+	handle := db.Handles[string(prefix)]
-	// handle := db.Handles[cfName]
+	claimId := hex.EncodeToString(claimHash)
-	// claimId := hex.EncodeToString(claimHash)
+	claimIdLen := len(claimId)
-	// for prefixLen := 0; prefixLen < 10; prefixLen++ {
+	for prefixLen := 0; prefixLen < 10; prefixLen++ {
-	// 	// Prefix and handle
+		var j int = prefixLen + 1
-	// 	options := NewIterateOptions().WithPrefix(prefix).WithCfHandle(handle)
+		if j > claimIdLen {
-	// 	// Start and stop bounds
+			j = claimIdLen
-	// 	options = options.WithStart(startKeyRaw).WithStop(endKeyRaw)
+		}
-	// 	// Don't include the key
+		partialClaimId := claimId[:j]
-	// 	options = options.WithIncludeKey(false)
+		key := prefixes.NewClaimShortIDKey(normalizedName, partialClaimId)
+		keyPrefix := prefixes.ClaimShortIDKeyPackPartial(key, 2)
+		// Prefix and handle
+		options := NewIterateOptions().WithPrefix(prefix).WithCfHandle(handle)
+		// Start and stop bounds
+		options = options.WithStart(keyPrefix)
+		// Don't include the key
+		options = options.WithIncludeValue(false)
 
-	// 	IterCF(db.DB)
+		ch := IterCF(db.DB, options)
-	// 	// for k, _ := range db.ClaimShortId.Iterate(prefix=(normalizedName, claimId[:prefixLen+1]), includeValue=false) {
+		for row := range ch {
-	// 	// 	if k.RootTxNum == rootTxNum && k.RootPosition == rootPosition {
+			key := row.Key.(*prefixes.ClaimShortIDKey)
-	// 	// 		return fmt.Sprintf("%s#%s", name, k.PartialClaimId), nil
+			if key.RootTxNum == rootTxNum && key.RootPosition == rootPosition {
-	// 	// 	}
+				return fmt.Sprintf("%s#%s", name, key.PartialClaimId), nil
-	// 	// 	break
+			}
-	// 	// }
+			break
-	// }
+		}
+	}
 	return "", nil
 }
 
@@ -455,7 +502,7 @@ func GetChannelForClaim(db *ReadOnlyDBColumnFamily, claimHash []byte, txNum uint
 	slice, err := db.DB.GetCF(db.Opts, handle, rawKey)
 	if err != nil {
 		return nil, err
-	} else if slice == nil {
+	} else if slice.Size() == 0 {
 		return nil, nil
 	}
 	rawValue := make([]byte, len(slice.Data()))
@@ -535,7 +582,7 @@ func GetSupportAmount(db *ReadOnlyDBColumnFamily, claimHash []byte) (uint64, err
 	slice, err := db.DB.GetCF(db.Opts, handle, rawKey)
 	if err != nil {
 		return 0, err
-	} else if slice == nil {
+	} else if slice.Size() == 0 {
 		return 0, nil
 	}
 	rawValue := make([]byte, len(slice.Data()))
@@ -564,7 +611,11 @@ func GetTxHash(db *ReadOnlyDBColumnFamily, txNum uint32) ([]byte, error) {
 	return rawValue, nil
 }
 
-func GetActivation(db *ReadOnlyDBColumnFamily, txNum uint32, postition uint16, isSupport bool) (uint32, error) {
+func GetActivation(db *ReadOnlyDBColumnFamily, txNum uint32, postition uint16) (uint32, error) {
+	return GetActivationFull(db, txNum, postition, false)
+}
+
+func GetActivationFull(db *ReadOnlyDBColumnFamily, txNum uint32, postition uint16, isSupport bool) (uint32, error) {
 	/*
 	   def get_activation(self, tx_num, position, is_support=False) -> int:
 	       activation = self.prefix_db.activated.get(
@@ -597,7 +648,7 @@ func GetActivation(db *ReadOnlyDBColumnFamily, txNum uint32, postition uint16, i
 }
 
 func GetCachedClaimTxo(db *ReadOnlyDBColumnFamily, claim []byte) (*prefixes.ClaimToTXOValue, error) {
-	// TODO: implement cache?
+	// TODO: implement cache
 	key := prefixes.NewClaimToTXOKey(claim)
 	cfName := string(prefixes.ClaimToTXO)
 	handle := db.Handles[cfName]
@@ -621,6 +672,9 @@ func GetControllingClaim(db *ReadOnlyDBColumnFamily, name string) (*prefixes.Cla
 	if err != nil {
 		return nil, err
 	}
+	if slice.Size() == 0 {
+		return nil, nil
+	}
 	rawValue := make([]byte, len(slice.Data()))
 	copy(rawValue, slice.Data())
 	value := prefixes.ClaimTakeoverValueUnpack(rawValue)
@@ -632,7 +686,7 @@ func FsGetClaimByHash(db *ReadOnlyDBColumnFamily, claimHash []byte) (*ResolveRes
 	if err != nil {
 		return nil, err
 	}
-	activation, err := GetActivation(db, claim.TxNum, claim.Position, false)
+	activation, err := GetActivation(db, claim.TxNum, claim.Position)
 	if err != nil {
 		return nil, err
 	}
@@ -642,7 +696,6 @@ func FsGetClaimByHash(db *ReadOnlyDBColumnFamily, claimHash []byte) (*ResolveRes
 	       activation, claim.channel_signature_is_valid
 	   )
 	*/
-	//return PrepareResolveResult(db, 0, 0, nil, "", 0, 0, 0, false)
 	return PrepareResolveResult(
 		db,
 		claim.TxNum,
@@ -660,14 +713,19 @@ func ClaimShortIdIter(db *ReadOnlyDBColumnFamily, normalizedName string, claimId
 	prefix := []byte{prefixes.ClaimShortIdPrefix}
 	handle := db.Handles[string(prefix)]
 	key := prefixes.NewClaimShortIDKey(normalizedName, claimId)
-	rawKeyPrefix := prefixes.ClaimShortIDKeyPackPartial(key, 2)
+	var rawKeyPrefix []byte = nil
+	if claimId != "" {
+		rawKeyPrefix = prefixes.ClaimShortIDKeyPackPartial(key, 2)
+	} else {
+		rawKeyPrefix = prefixes.ClaimShortIDKeyPackPartial(key, 1)
+	}
 	options := NewIterateOptions().WithCfHandle(handle).WithPrefix(rawKeyPrefix)
-	options = options.WithIncludeValue(true)
+	options = options.WithIncludeValue(true) //.WithIncludeStop(true)
 	ch := IterCF(db.DB, options)
 	return ch
 }
 
-func GetCachedClaimHash(db *ReadOnlyDBColumnFamily, txNum uint32, position uint16) ([]byte, error) {
+func GetCachedClaimHash(db *ReadOnlyDBColumnFamily, txNum uint32, position uint16) (*prefixes.TXOToClaimValue, error) {
 	/*
 			    if self._cache_all_claim_txos:
 		            if tx_num not in self.txo_to_claim:
@@ -676,52 +734,102 @@ func GetCachedClaimHash(db *ReadOnlyDBColumnFamily, txNum uint32, position uint1
 		        v = self.prefix_db.txo_to_claim.get_pending(tx_num, position)
 		        return None if not v else v.claim_hash
 	*/
-	return nil, nil
+	// TODO: implement cache
+	key := prefixes.NewTXOToClaimKey(txNum, position)
+	cfName := string(prefixes.TXOToClaim)
+	handle := db.Handles[cfName]
+	rawKey := key.PackKey()
+	slice, err := db.DB.GetCF(db.Opts, handle, rawKey)
+	if err != nil {
+		return nil, err
+	}
+	rawValue := make([]byte, len(slice.Data()))
+	copy(rawValue, slice.Data())
+	value := prefixes.TXOToClaimValueUnpack(rawValue)
+	return value, nil
 }
 
 func ResolveParsedUrl(db *ReadOnlyDBColumnFamily, parsed *PathSegment) (*ResolveResult, error) {
 	normalizedName := util.NormalizeName(parsed.name)
-	if (parsed.amountOrder == 0 && parsed.claimId == "") || parsed.amountOrder == 1 {
+	if (parsed.amountOrder == -1 && parsed.claimId == "") || parsed.amountOrder == 1 {
 		controlling, err := GetControllingClaim(db, normalizedName)
 		if err != nil {
 			return nil, err
 		}
+		if controlling == nil {
+			return nil, nil
+		}
 		return FsGetClaimByHash(db, controlling.ClaimHash)
 	}
 
 	var amountOrder int = int(math.Max(float64(parsed.amountOrder), 1))
 
-	log.Println(amountOrder)
+	log.Println("amountOrder:", amountOrder)
 
 	if parsed.claimId != "" {
 		if len(parsed.claimId) == 40 {
-			// Do full claim stuff
+			claimHash, err := hex.DecodeString(parsed.claimId)
-			log.Println("TODO")
-		}
-		ch := ClaimShortIdIter(db, normalizedName, parsed.claimId)
-		for row := range ch {
-			key := row.Value.(*prefixes.ClaimShortIDKey)
-			claimTxo := row.Value.(*prefixes.ClaimShortIDValue)
-			fullClaimHash, err := GetCachedClaimHash(db, claimTxo.TxNum, claimTxo.Position)
 			if err != nil {
 				return nil, err
 			}
-			c, err := GetCachedClaimTxo(db, fullClaimHash)
+			// Maybe don't use caching version, when I actually implement the cache
+			claimTxo, err := GetCachedClaimTxo(db, claimHash)
+			if err != nil {
+				return nil, err
+			}
+			if claimTxo == nil || claimTxo.NormalizedName() != normalizedName {
+				return nil, nil
+			}
+			activation, err := GetActivation(db, claimTxo.TxNum, claimTxo.Position)
+			if err != nil {
+				return nil, err
+			}
+			return PrepareResolveResult(
+				db,
+				claimTxo.TxNum,
+				claimTxo.Position,
+				claimHash,
+				claimTxo.Name,
+				claimTxo.RootTxNum,
+				claimTxo.RootPosition,
+				activation,
+				claimTxo.ChannelSignatureIsValid,
+			)
+		}
+		log.Println("nomalizedName:", normalizedName)
+		log.Println("claimId:", parsed.claimId)
+		var j int = 10
+		if len(parsed.claimId) < j {
+			j = len(parsed.claimId)
+		}
+		ch := ClaimShortIdIter(db, normalizedName, parsed.claimId[:j])
+		log.Printf("ch: %#v\n", ch)
+		row := <-ch
+		key := row.Key.(*prefixes.ClaimShortIDKey)
+		claimTxo := row.Value.(*prefixes.ClaimShortIDValue)
+		log.Println("key:", key)
+		log.Println("claimTxo:", claimTxo)
+		fullClaimHash, err := GetCachedClaimHash(db, claimTxo.TxNum, claimTxo.Position)
+		log.Println("fullClaimHash:", fullClaimHash)
+		if err != nil {
+			return nil, err
+		}
+		c, err := GetCachedClaimTxo(db, fullClaimHash.ClaimHash)
+		log.Println("c:", c)
 		if err != nil {
 			return nil, err
 		}
 		nonNormalizedName := c.Name
 		signatureIsValid := c.ChannelSignatureIsValid
-			activation, err := GetActivation(db, claimTxo.TxNum, claimTxo.Position, false)
+		activation, err := GetActivation(db, claimTxo.TxNum, claimTxo.Position)
 		if err != nil {
 			return nil, err
 		}
-			// LOL how do we ignore this static-check from Go?
 		return PrepareResolveResult(
 			db,
 			claimTxo.TxNum,
 			claimTxo.Position,
-				fullClaimHash,
+			fullClaimHash.ClaimHash,
 			nonNormalizedName,
 			key.RootTxNum,
 			key.RootPosition,
@@ -729,11 +837,83 @@ func ResolveParsedUrl(db *ReadOnlyDBColumnFamily, parsed *PathSegment) (*Resolve
 			signatureIsValid,
 		)
 	}
-	}
 
 	return nil, nil
 }
 
+func ResolveClaimInChannel(db *ReadOnlyDBColumnFamily, claimHash []byte, normalizedName string) (*ResolveResult, error) {
+	return nil, nil
+}
+
+/*
+TODO: Implement blocking / filtering loading
+    async def reload_blocking_filtering_streams(self):
+        def reload():
+            self.blocked_streams, self.blocked_channels = self.get_streams_and_channels_reposted_by_channel_hashes(
+                self.blocking_channel_hashes
+            )
+            self.filtered_streams, self.filtered_channels = self.get_streams_and_channels_reposted_by_channel_hashes(
+                self.filtering_channel_hashes
+            )
+        await asyncio.get_event_loop().run_in_executor(self._executor, reload)
+
+    def get_streams_and_channels_reposted_by_channel_hashes(self, reposter_channel_hashes: Set[bytes]):
+        streams, channels = {}, {}
+        for reposter_channel_hash in reposter_channel_hashes:
+            for stream in self.prefix_db.channel_to_claim.iterate((reposter_channel_hash, ), include_key=False):
+                repost = self.get_repost(stream.claim_hash)
+                if repost:
+                    txo = self.get_claim_txo(repost)
+                    if txo:
+                        if txo.normalized_name.startswith('@'):
+                            channels[repost] = reposter_channel_hash
+                        else:
+                            streams[repost] = reposter_channel_hash
+        return streams, channels
+*/
+
+// GetBlockerHash get the hash of the blocker or filterer of the claim.
+// TODO: this currently converts the byte arrays to strings, which is not
+// very efficient. Might want to figure out a better way to do this.
+func GetBlockerHash(db *ReadOnlyDBColumnFamily, claimHash, repostedClaimHash, channelHash []byte) ([]byte, []byte, error) {
+	claimHashStr := string(claimHash)
+	respostedClaimHashStr := string(repostedClaimHash)
+	channelHashStr := string(channelHash)
+
+	var blockedHash []byte = nil
+	var filteredHash []byte = nil
+
+	blockedHash = db.BlockedStreams[claimHashStr]
+	if blockedHash == nil {
+		blockedHash = db.BlockedStreams[respostedClaimHashStr]
+	}
+	if blockedHash == nil {
+		blockedHash = db.BlockedChannels[claimHashStr]
+	}
+	if blockedHash == nil {
+		blockedHash = db.BlockedChannels[respostedClaimHashStr]
+	}
+	if blockedHash == nil {
+		blockedHash = db.BlockedChannels[channelHashStr]
+	}
+
+	filteredHash = db.FilteredStreams[claimHashStr]
+	if filteredHash == nil {
+		filteredHash = db.FilteredStreams[respostedClaimHashStr]
+	}
+	if filteredHash == nil {
+		filteredHash = db.FilteredChannels[claimHashStr]
+	}
+	if filteredHash == nil {
+		filteredHash = db.FilteredChannels[respostedClaimHashStr]
+	}
+	if filteredHash == nil {
+		filteredHash = db.FilteredChannels[channelHashStr]
+	}
+
+	return blockedHash, filteredHash, nil
+}
+
 func Resolve(db *ReadOnlyDBColumnFamily, url string) *ExpandedResolveResult {
 	var res = &ExpandedResolveResult{
 		Stream:          nil,
@@ -755,9 +935,9 @@ func Resolve(db *ReadOnlyDBColumnFamily, url string) *ExpandedResolveResult {
 	log.Printf("parsed: %#v\n", parsed)
 
 	// has stream in channel
-	if strings.Compare(parsed.StreamName, "") != 0 && strings.Compare(parsed.ChannelName, "") != 0 {
+	if strings.Compare(parsed.StreamName, "") != 0 && strings.Compare(parsed.ClaimName, "") != 0 {
 		channel = &PathSegment{
-			name:        parsed.ChannelName,
+			name:        parsed.ClaimName,
 			claimId:     parsed.ChannelClaimId,
 			amountOrder: parsed.PrimaryBidPosition,
 		}
@@ -766,9 +946,9 @@ func Resolve(db *ReadOnlyDBColumnFamily, url string) *ExpandedResolveResult {
 			claimId:     parsed.StreamClaimId,
 			amountOrder: parsed.SecondaryBidPosition,
 		}
-	} else if strings.Compare(parsed.ChannelName, "") != 0 {
+	} else if strings.Compare(parsed.ClaimName, "") != 0 {
 		channel = &PathSegment{
-			name:        parsed.ChannelName,
+			name:        parsed.ClaimName,
 			claimId:     parsed.ChannelClaimId,
 			amountOrder: parsed.PrimaryBidPosition,
 		}
@@ -792,15 +972,138 @@ func Resolve(db *ReadOnlyDBColumnFamily, url string) *ExpandedResolveResult {
 				err: &ResolveError{err},
 			}
 			return res
+		} else if resolvedChannel == nil {
+			res.Channel = &optionalResolveResultOrError{
+				err: &ResolveError{fmt.Errorf("could not find channel in \"%s\"", url)},
+			}
+			return res
 		}
 	}
-	log.Println("resolvedChannel:", resolvedChannel)
+	log.Printf("resolvedChannel: %#v\n", resolvedChannel)
-	return nil
+	log.Printf("resolvedChannel.TxHash: %s\n", hex.EncodeToString(resolvedChannel.TxHash))
+	log.Printf("resolvedChannel.ClaimHash: %s\n", hex.EncodeToString(resolvedChannel.ClaimHash))
+	log.Printf("resolvedChannel.ChannelHash: %s\n", hex.EncodeToString(resolvedChannel.ChannelHash))
+	// s :=
+	// log.Printf("resolvedChannel.TxHash: %s\n", hex.EncodeToString(sort.IntSlice(resolvedChannel.TxHash)))
 	if stream != nil {
 		if resolvedChannel != nil {
-
+			streamClaim, err := ResolveClaimInChannel(db, resolvedChannel.ClaimHash, stream.Normalized())
+			// TODO: Confirm error case
+			if err != nil {
+				res.Stream = &optionalResolveResultOrError{
+					err: &ResolveError{err},
+				}
+				return res
+			}
+			if streamClaim != nil {
+				resolvedStream, err = FsGetClaimByHash(db, streamClaim.ClaimHash)
+				// TODO: Confirm error case
+				if err != nil {
+					res.Stream = &optionalResolveResultOrError{
+						err: &ResolveError{err},
+					}
+					return res
+				}
+			}
 		} else {
+			resolvedStream, err = ResolveParsedUrl(db, stream)
+			// TODO: Confirm error case
+			if err != nil {
+				res.Stream = &optionalResolveResultOrError{
+					err: &ResolveError{err},
+				}
+				return res
+			}
+			if channel == nil && resolvedChannel == nil && resolvedStream != nil && len(resolvedStream.ChannelHash) > 0 {
+				resolvedChannel, err = FsGetClaimByHash(db, resolvedStream.ChannelHash)
+				// TODO: Confirm error case
+				if err != nil {
+					res.Channel = &optionalResolveResultOrError{
+						err: &ResolveError{err},
+					}
+					return res
+				}
+			}
+		}
+		if resolvedStream == nil {
+			res.Stream = &optionalResolveResultOrError{
+				err: &ResolveError{fmt.Errorf("could not find stream in \"%s\"", url)},
+			}
+			return res
+		}
+	}
 
+	/*
+	   repost = None
+	   reposted_channel = None
+	   if resolved_stream or resolved_channel:
+	       claim_hash = resolved_stream.claim_hash if resolved_stream else resolved_channel.claim_hash
+	       claim = resolved_stream if resolved_stream else resolved_channel
+	       reposted_claim_hash = resolved_stream.reposted_claim_hash if resolved_stream else None
+
+	       if blocker_hash:
+	           reason_row = self._fs_get_claim_by_hash(blocker_hash)
+	           return ExpandedResolveResult(
+	               None, ResolveCensoredError(url, blocker_hash, censor_row=reason_row), None, None
+	           )
+	       if claim.reposted_claim_hash:
+	           repost = self._fs_get_claim_by_hash(claim.reposted_claim_hash)
+	           if repost and repost.channel_hash and repost.signature_valid:
+	               reposted_channel = self._fs_get_claim_by_hash(repost.channel_hash)
+	*/
+	var repost *ResolveResult = nil
+	var repostedChannel *ResolveResult = nil
+
+	if resolvedStream != nil || resolvedChannel != nil {
+		var claim *ResolveResult = nil
+		var claimHash []byte = nil
+		var respostedClaimHash []byte = nil
+		var blockerHash []byte = nil
+		if resolvedStream != nil {
+			claim = resolvedStream
+			claimHash = resolvedStream.ClaimHash
+			respostedClaimHash = resolvedStream.RepostedClaimHash
+		} else {
+			claim = resolvedChannel
+			claimHash = resolvedChannel.ClaimHash
+		}
+		blockerHash, _, err = GetBlockerHash(db, claimHash, respostedClaimHash, claim.ChannelHash)
+		if err != nil {
+			res.Channel = &optionalResolveResultOrError{
+				err: &ResolveError{err},
+			}
+			return res
+		}
+		if blockerHash != nil {
+			reasonRow, err := FsGetClaimByHash(db, blockerHash)
+			if err != nil {
+				res.Channel = &optionalResolveResultOrError{
+					err: &ResolveError{err},
+				}
+				return res
+			}
+			res.Channel = &optionalResolveResultOrError{
+				err: &ResolveError{fmt.Errorf("%s, %v, %v", url, blockerHash, reasonRow)},
+			}
+			return res
+		}
+		if claim.RepostedClaimHash != nil {
+			repost, err = FsGetClaimByHash(db, claim.RepostedClaimHash)
+			if err != nil {
+				res.Channel = &optionalResolveResultOrError{
+					err: &ResolveError{err},
+				}
+				return res
+			}
+			if repost != nil && repost.ChannelHash != nil && repost.SignatureValid {
+				repostedChannel, err = FsGetClaimByHash(db, repost.ChannelHash)
+				if err != nil {
+					res.Channel = &optionalResolveResultOrError{
+						err: &ResolveError{err},
+					}
+					return res
+				}
+			}
 		}
 	}
 
@@ -810,6 +1113,12 @@ func Resolve(db *ReadOnlyDBColumnFamily, url string) *ExpandedResolveResult {
 	res.Stream = &optionalResolveResultOrError{
 		res: resolvedStream,
 	}
+	res.Repost = &optionalResolveResultOrError{
+		res: repost,
+	}
+	res.RepostedChannel = &optionalResolveResultOrError{
+		res: repostedChannel,
+	}
 
 	log.Printf("parsed: %+v\n", parsed)
 	return res
@@ -828,9 +1137,13 @@ func (opts *IterOptions) ReadRow(ch chan *prefixes.PrefixRowKV, prevKey *[]byte)
 	var outValue interface{} = nil
 	var err error = nil
 
-	// We need to check the current key is we're not including the stop
+	// log.Println("keyData:", keyData)
+	// log.Println("valueData:", valueData)
+
+	// We need to check the current key if we're not including the stop
 	// key.
 	if !opts.IncludeStop && opts.StopIteration(keyData) {
+		log.Println("returning false")
 		return false
 	}
 
@@ -865,11 +1178,13 @@ func (opts *IterOptions) ReadRow(ch chan *prefixes.PrefixRowKV, prevKey *[]byte)
 	key.Free()
 	value.Free()
 
+	// log.Println("sending to channel")
 	ch <- &prefixes.PrefixRowKV{
 		Key:   outKey,
 		Value: outValue,
 	}
 	*prevKey = newKeyData
+	// log.Println("*prevKey:", *prevKey)
 
 	return true
 }
@@ -885,6 +1200,7 @@ func IterCF(db *grocksdb.DB, opts *IterOptions) <-chan *prefixes.PrefixRowKV {
 
 	it.Seek(opts.Prefix)
 	if opts.Start != nil {
+		log.Println("Seeking to start")
 		it.Seek(opts.Start)
 	}
 
@@ -894,13 +1210,17 @@ func IterCF(db *grocksdb.DB, opts *IterOptions) <-chan *prefixes.PrefixRowKV {
 
 		var prevKey []byte = nil
 		if !opts.IncludeStart {
+			log.Println("Not including start")
 			it.Next()
 		}
 		if !it.Valid() && opts.IncludeStop {
+			log.Println("Not valid, but including stop")
 			opts.ReadRow(ch, &prevKey)
 		}
-		for ; !opts.StopIteration(prevKey) && it.Valid(); it.Next() {
+		var continueIter bool = true
-			opts.ReadRow(ch, &prevKey)
+		for ; continueIter && !opts.StopIteration(prevKey) && it.Valid(); it.Next() {
+			//log.Println("Main loop")
+			continueIter = opts.ReadRow(ch, &prevKey)
 		}
 	}()
 
@@ -954,7 +1274,7 @@ func GetWriteDBCF(name string) (*grocksdb.DB, []*grocksdb.ColumnFamilyHandle, er
 		return nil, nil, err
 	}
 	cfOpts := make([]*grocksdb.Options, len(cfNames))
-	for i, _ := range cfNames {
+	for i := range cfNames {
 		cfOpts[i] = cfOpt
 	}
 	db, handles, err := grocksdb.OpenDbColumnFamilies(opts, name, cfNames, cfOpts)
@@ -997,6 +1317,10 @@ func GetDBColumnFamlies(name string, cfNames []string) (*ReadOnlyDBColumnFamily,
 		DB:               db,
 		Handles:          handlesMap,
 		Opts:             roOpts,
+		BlockedStreams:   make(map[string][]byte),
+		BlockedChannels:  make(map[string][]byte),
+		FilteredStreams:  make(map[string][]byte),
+		FilteredChannels: make(map[string][]byte),
 	}
 
 	err = InitTxCounts(myDB)

db/db_test.go

@@ -13,6 +13,11 @@ import (
 	"github.com/linxGnu/grocksdb"
 )
 
+////////////////////////////////////////////////////////////////////////////////
+// Utility functions for testing
+////////////////////////////////////////////////////////////////////////////////
+
+// OpenAndFillTmpDBColumnFamlies opens a db and fills it with data from a csv file using the given column family names
 func OpenAndFillTmpDBColumnFamlies(filePath string) (*dbpkg.ReadOnlyDBColumnFamily, [][]string, func(), error) {
 
 	log.Println(filePath)
@@ -77,6 +82,8 @@ func OpenAndFillTmpDBColumnFamlies(filePath string) (*dbpkg.ReadOnlyDBColumnFami
 	return myDB, records, toDefer, nil
 }
 
+// OpenAndFillTmpDBCF opens a db and fills it with data from a csv file
+// using the given column family handle. Old version, should probably remove.
 func OpenAndFillTmpDBCF(filePath string) (*grocksdb.DB, [][]string, func(), *grocksdb.ColumnFamilyHandle, error) {
 
 	log.Println(filePath)
@@ -123,6 +130,8 @@ func OpenAndFillTmpDBCF(filePath string) (*grocksdb.DB, [][]string, func(), *gro
 	return db, records, toDefer, handle, nil
 }
 
+// OpenAndFillTmpDB opens a db and fills it with data from a csv file.
+// Old funciont, should probably remove.
 func OpenAndFillTmpDB(filePath string) (*grocksdb.DB, [][]string, func(), error) {
 
 	log.Println(filePath)
@@ -165,6 +174,8 @@ func OpenAndFillTmpDB(filePath string) (*grocksdb.DB, [][]string, func(), error)
 	return db, records, toDefer, nil
 }
 
+// CatCSV Reads a csv version of the db and prints it to stdout,
+// while decoding types.
 func CatCSV(filePath string) {
 	log.Println(filePath)
 	file, err := os.Open(filePath)
@@ -197,12 +208,56 @@ func CatCSV(filePath string) {
 	}
 }
 
-func TestOpenFullDB(t *testing.T) {
+func TestCatFullDB(t *testing.T) {
-	url := "lbry://@lothrop#2/lothrop-livestream-games-and-code#c"
+	// url := "lbry://@lothrop#2/lothrop-livestream-games-and-code#c"
+	// "lbry://@lbry", "lbry://@lbry#3", "lbry://@lbry3f", "lbry://@lbry#3fda836a92faaceedfe398225fb9b2ee2ed1f01a", "lbry://@lbry:1", "lbry://@lbry$1"
+	// url := "lbry://@Styxhexenhammer666#2/legacy-media-baron-les-moonves-(cbs#9"
+	// url := "lbry://@lbry"
+	// url := "lbry://@lbry#3fda836a92faaceedfe398225fb9b2ee2ed1f01a"
 	dbPath := "/mnt/d/data/snapshot_1072108/lbry-rocksdb/"
-	prefixes := prefixes.GetPrefixes()
+	prefixNames := prefixes.GetPrefixes()
 	cfNames := []string{"default", "e", "d", "c"}
-	for _, prefix := range prefixes {
+	for _, prefix := range prefixNames {
+		cfName := string(prefix)
+		cfNames = append(cfNames, cfName)
+	}
+	db, err := dbpkg.GetDBColumnFamlies(dbPath, cfNames)
+	toDefer := func() {
+		db.DB.Close()
+		err = os.RemoveAll("./asdf")
+		if err != nil {
+			log.Println(err)
+		}
+	}
+	defer toDefer()
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	ch := dbpkg.ClaimShortIdIter(db, "@lbry", "")
+	for row := range ch {
+		key := row.Key.(*prefixes.ClaimShortIDKey)
+		val := row.Value.(*prefixes.ClaimShortIDValue)
+		log.Printf("%#v, %#v\n", key, val)
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// End utility functions
+////////////////////////////////////////////////////////////////////////////////
+
+// TestOpenFullDB Tests running a resolve on a full db.
+func TestOpenFullDB(t *testing.T) {
+	// url := "lbry://@lothrop#2/lothrop-livestream-games-and-code#c"
+	// "lbry://@lbry", "lbry://@lbry#3", "lbry://@lbry3f", "lbry://@lbry#3fda836a92faaceedfe398225fb9b2ee2ed1f01a", "lbry://@lbry:1", "lbry://@lbry$1"
+	// url := "lbry://@Styxhexenhammer666#2/legacy-media-baron-les-moonves-(cbs#9"
+	// url := "lbry://@lbry"
+	// url := "lbry://@lbry#3fda836a92faaceedfe398225fb9b2ee2ed1f01a"
+	url := "lbry://@lbry$1"
+	dbPath := "/mnt/d/data/snapshot_1072108/lbry-rocksdb/"
+	prefixNames := prefixes.GetPrefixes()
+	cfNames := []string{"default", "e", "d", "c"}
+	for _, prefix := range prefixNames {
 		cfName := string(prefix)
 		cfNames = append(cfNames, cfName)
 	}
@@ -220,7 +275,7 @@ func TestOpenFullDB(t *testing.T) {
 		return
 	}
 	expandedResolveResult := dbpkg.Resolve(db, url)
-	log.Println(expandedResolveResult)
+	log.Printf("expandedResolveResult: %#v\n", expandedResolveResult)
 }
 
 // FIXME: Needs new data format
@@ -236,11 +291,35 @@ func TestResolve(t *testing.T) {
 	log.Println(expandedResolveResult)
 }
 
+// TestPrintClaimShortId Utility function to cat the ClaimShortId csv
 func TestPrintClaimShortId(t *testing.T) {
 	filePath := "../testdata/F_cat.csv"
 	CatCSV(filePath)
 }
 
+// TestGetShortClaimIdUrl tests resolving a claim to a short url.
+func TestGetShortClaimIdUrl(t *testing.T) {
+	// &{[70] cat 0 2104436 0}
+	name := "cat"
+	normalName := "cat"
+	claimHash := []byte{}
+	var rootTxNum uint32 = 2104436
+	var position uint16 = 0
+	filePath := "../testdata/F_cat.csv"
+	db, _, toDefer, err := OpenAndFillTmpDBColumnFamlies(filePath)
+	if err != nil {
+		t.Error(err)
+	}
+	defer toDefer()
+	shortUrl, err := dbpkg.GetShortClaimIdUrl(db, name, normalName, claimHash, rootTxNum, position)
+	if err != nil {
+		t.Error(err)
+	}
+	log.Println(shortUrl)
+}
+
+// TestClaimShortIdIter Tests the function to get an iterator of ClaimShortIds
+// with a noramlized name and a partial claim id.
 func TestClaimShortIdIter(t *testing.T) {
 	filePath := "../testdata/F_cat.csv"
 	normalName := "cat"
@@ -248,7 +327,6 @@ func TestClaimShortIdIter(t *testing.T) {
 	db, _, toDefer, err := OpenAndFillTmpDBColumnFamlies(filePath)
 	if err != nil {
 		t.Error(err)
-		return
 	}
 	defer toDefer()
 
@@ -263,11 +341,39 @@ func TestClaimShortIdIter(t *testing.T) {
 	}
 }
 
+// TestPrintTXOToCLaim Utility function to cat the TXOToClaim csv.
+func TestPrintTXOToClaim(t *testing.T) {
+	filePath := "../testdata/G_2.csv"
+	CatCSV(filePath)
+}
+
+// TestGetTXOToClaim Tests getting a claim hash from the db given
+// a txNum and position.
+func TestGetTXOToClaim(t *testing.T) {
+	//&{[71] 1456296 0}
+	var txNum uint32 = 1456296
+	var position uint16 = 0
+	filePath := "../testdata/G_2.csv"
+	db, _, toDefer, err := OpenAndFillTmpDBColumnFamlies(filePath)
+	if err != nil {
+		t.Error(err)
+	}
+	defer toDefer()
+	val, err := dbpkg.GetCachedClaimHash(db, txNum, position)
+	if err != nil {
+		t.Error(err)
+	} else if val.Name != "one" {
+		t.Error(err)
+	}
+}
+
+// TestPrintClaimToTXO Utility function to cat the ClaimToTXO csv.
 func TestPrintClaimToTXO(t *testing.T) {
 	filePath := "../testdata/E_2.csv"
 	CatCSV(filePath)
 }
 
+// TestGetClaimToTXO Tests getting a ClaimToTXO value from the db.
 func TestGetClaimToTXO(t *testing.T) {
 	claimHashStr := "00000324e40fcb63a0b517a3660645e9bd99244a"
 	claimHash, err := hex.DecodeString(claimHashStr)
@@ -290,11 +396,14 @@ func TestGetClaimToTXO(t *testing.T) {
 	log.Println(res)
 }
 
+// TestPrintClaimTakeover Utility function to cat the ClaimTakeover csv.
 func TestPrintClaimTakeover(t *testing.T) {
 	filePath := "../testdata/P_cat.csv"
 	CatCSV(filePath)
 }
 
+// TestGetControlingClaim Tests getting a controlling claim value from the db
+// based on a name.
 func TestGetControllingClaim(t *testing.T) {
 	filePath := "../testdata/P_cat.csv"
 	db, _, toDefer, err := OpenAndFillTmpDBColumnFamlies(filePath)
@@ -311,6 +420,7 @@ func TestGetControllingClaim(t *testing.T) {
 	log.Println(res)
 }
 
+// TestIter Tests the db iterator. Probably needs data format updated.
 func TestIter(t *testing.T) {
 
 	filePath := "../testdata/W.csv"

db/prefixes/prefixes.go

@@ -1471,6 +1471,14 @@ type TXOToClaimValue struct {
 	Name      string `json:"name"`
 }
 
+func NewTXOToClaimKey(txNum uint32, position uint16) *TXOToClaimKey {
+	return &TXOToClaimKey{
+		Prefix:   []byte{TXOToClaim},
+		TxNum:    txNum,
+		Position: position,
+	}
+}
+
 func (k *TXOToClaimKey) PackKey() []byte {
 	prefixLen := 1
 	// b'>LH'

main.go

@@ -5,6 +5,9 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"os"
+	"os/signal"
+	"syscall"
 	"time"
 
 	"github.com/lbryio/hub/db"
@@ -27,9 +30,27 @@ func main() {
 		ctxWCancel, cancel := context.WithCancel(ctx)
 		defer cancel()
 
+		interrupt := make(chan os.Signal, 1)
+		signal.Notify(interrupt, os.Interrupt, syscall.SIGTERM)
+		defer signal.Stop(interrupt)
+
 		s := server.MakeHubServer(ctxWCancel, args)
 		s.Run()
 
+		select {
+		case <-interrupt:
+			break
+		case <-ctx.Done():
+			break
+		}
+
+		log.Println("Shutting down server...")
+
+		s.EsClient.Stop()
+		s.GrpcServer.GracefulStop()
+
+		log.Println("Returning from main...")
+
 		return
 	} else if args.CmdType == server.DBCmd {
 		options := &db.IterOptions{
@@ -89,21 +110,21 @@ func main() {
 
 		return
 	} else if args.CmdType == server.DBCmd3 {
-		var rawPrefix byte = prefixes.ClaimShortIdPrefix
+		var rawPrefix byte = prefixes.TXOToClaim
 		prefix := []byte{rawPrefix}
 		columnFamily := string(prefix)
-		start := &prefixes.ClaimShortIDKey{
+		// start := &prefixes.ClaimShortIDKey{
-			Prefix:         []byte{prefixes.ClaimShortIdPrefix},
+		// 	Prefix:         []byte{prefixes.ClaimShortIdPrefix},
-			NormalizedName: "cat",
+		// 	NormalizedName: "cat",
-			PartialClaimId: "",
+		// 	PartialClaimId: "",
-			RootTxNum:      0,
+		// 	RootTxNum:      0,
-			RootPosition:   0,
+		// 	RootPosition:   0,
-		}
+		// }
-		startRaw := prefixes.ClaimShortIDKeyPackPartial(start, 1)
+		// startRaw := prefixes.ClaimShortIDKeyPackPartial(start, 1)
 		options := &db.IterOptions{
 			FillCache:    false,
 			Prefix:       prefix,
-			Start:        startRaw,
+			Start:        nil,
 			Stop:         nil,
 			IncludeStart: true,
 			IncludeStop:  false,
@@ -120,42 +141,9 @@ func main() {
 
 		options.CfHandle = handles[1]
 
-		db.ReadWriteRawNColumnFamilies(dbVal, options, fmt.Sprintf("./testdata/%s_cat.csv", columnFamily), 10)
+		db.ReadWriteRawNColumnFamilies(dbVal, options, fmt.Sprintf("./testdata/%s_2.csv", columnFamily), 10)
 		return
 	}
-	// } else if args.CmdType == server.DBCmd4 {
-	// 	var rawPrefix byte = prefixes.TxCount
-
-	// 	prefix := []byte{rawPrefix}
-	// 	columnFamily := string(prefix)
-	// 	options := &db.IterOptions{
-	// 		FillCache:    false,
-	// 		Prefix:       prefix,
-	// 		Start:        nil,
-	// 		Stop:         nil,
-	// 		IncludeStart: true,
-	// 		IncludeStop:  false,
-	// 		IncludeKey:   true,
-	// 		IncludeValue: true,
-	// 		RawKey:       true,
-	// 		RawValue:     true,
-	// 	}
-
-	// 	dbVal, handles, err := db.GetDBCF("/mnt/d/data/snapshot_1072108/lbry-rocksdb/", columnFamily)
-	// 	if err != nil {
-	// 		log.Fatalln(err)
-	// 	}
-
-	// 	options.CfHandle = handles[1]
-	// 	var n = 10
-	// 	if bytes.Equal(prefix, []byte{prefixes.Undo}) || bytes.Equal(prefix, []byte{prefixes.DBState}) {
-	// 		n = 1
-	// 	}
-
-	// 	db.ReadWriteRawNCF(dbVal, options, fmt.Sprintf("./testdata/%s.csv", columnFamily), n)
-
-	// 	return
-	// }
 
 	conn, err := grpc.Dial("localhost:"+args.Port,
 		grpc.WithInsecure(),

testdata/G_2.csv

@@ -0,0 +1,11 @@
+G,,
+G,4700162aa70000,c78ac4c326cd43cdc0c844b7cea13659449ab3e40015746573742d70686f746f2d7374726173626f757267
+G,4700162f600000,ebf95f7fdb89db5467bb1b88ea3b0f0f7ee5ce360003636e63
+G,47001630960000,a6f91a86837ab84a4cf0d2dcbe94704a528cf820000f776f6e646572776f6d616e31393933
+G,47001635e60000,9673cc2a1aac64d7b2742705abfb09fca30d7e0500056d6d61736b
+G,47001638a80000,c39342066646dc50f1a9954b41684d157b035dac00036f6e65
+G,47001645ef0001,4689c1ccb4420309f93ab98799b28c49fa4d3809000a65617379737472656574
+G,470016529a0000,f1628d66ae52295590b72b9a0b3a3527642a532600137465737470756230332d32312d323031372d32
+G,470016529d0000,a4c61ced261ab571bdb3410ae140bec6c31f14ce00117465737470756230332d32312d32303137
+G,47001655960000,2327bcb6d7578a2669e416b5aa185fe14ee8e03e00056569676874
+G,47001664200000,f69099600bdca9b062ba60432dba3c0ca2241167002c686973746f72792d6f662d6672696564726963682d69692d6f662d707275737369612d766f6c756d652d3137