update trending in elasticsearch

-add TrendingPrefixSpike to leveldb
-expose `TRENDING_HALF_LIFE`, `TRENDING_WHALE_HALF_LIFE` and `TRENDING_WHALE_THRESHOLD` hub settings

lbry/wallet/server/block_processor.py

@@ -24,13 +24,11 @@ from lbry.wallet.server.util import chunks, class_logger
 from lbry.crypto.hash import hash160
 from lbry.wallet.server.leveldb import FlushData
 from lbry.wallet.server.mempool import MemPool
-from lbry.wallet.server.db import DB_PREFIXES
 from lbry.wallet.server.db.claimtrie import StagedClaimtrieItem, StagedClaimtrieSupport
 from lbry.wallet.server.db.claimtrie import get_takeover_name_ops, StagedActivation, get_add_effective_amount_ops
 from lbry.wallet.server.db.claimtrie import get_remove_name_ops, get_remove_effective_amount_ops
 from lbry.wallet.server.db.prefixes import ACTIVATED_SUPPORT_TXO_TYPE, ACTIVATED_CLAIM_TXO_TYPE
 from lbry.wallet.server.db.prefixes import PendingActivationKey, PendingActivationValue, Prefixes, ClaimToTXOValue
-from lbry.wallet.server.db.trending import TrendingDB
 from lbry.wallet.server.udp import StatusServer
 from lbry.wallet.server.db.revertable import RevertableOp, RevertablePut, RevertableDelete, RevertableOpStack
 if typing.TYPE_CHECKING:
@@ -264,8 +262,6 @@ class BlockProcessor:
         self.claim_channels: Dict[bytes, bytes] = {}
         self.hashXs_by_tx: DefaultDict[bytes, List[int]] = defaultdict(list)
 
-        self.trending_db = TrendingDB(env.db_dir)
-
     async def claim_producer(self):
         if self.db.db_height <= 1:
             return
@@ -314,11 +310,6 @@ class BlockProcessor:
                     await self.run_in_thread(self.advance_block, block)
                     await self.flush()
 
-                    # trending
-                    extra_claims = self.trending_db.process_block(self.height,
-                                                                  self.daemon.cached_height())
-                    self.touched_claims_to_send_es.union(extra_claims)
-
                     self.logger.info("advanced to %i in %0.3fs", self.height, time.perf_counter() - start)
                     if self.height == self.coin.nExtendedClaimExpirationForkHeight:
                         self.logger.warning(
@@ -331,6 +322,7 @@ class BlockProcessor:
                         await self.db.search_index.claim_consumer(self.claim_producer())
                         await self.db.search_index.apply_filters(self.db.blocked_streams, self.db.blocked_channels,
                                                                  self.db.filtered_streams, self.db.filtered_channels)
+                        await self.db.search_index.apply_update_and_decay_trending_score()
                     self.db.search_index.clear_caches()
                     self.touched_claims_to_send_es.clear()
                     self.removed_claims_to_send_es.clear()
@@ -369,7 +361,6 @@ class BlockProcessor:
                     self.logger.info(f'backed up to height {self.height:,d}')
 
                     await self.db._read_claim_txos()  # TODO: don't do this
-
                     for touched in self.touched_claims_to_send_es:
                         if not self.db.get_claim_txo(touched):
                             self.removed_claims_to_send_es.add(touched)
@@ -485,6 +476,7 @@ class BlockProcessor:
 
         if txo.script.is_claim_name:  # it's a root claim
             root_tx_num, root_idx = tx_num, nout
+            previous_amount = 0
         else:  # it's a claim update
             if claim_hash not in spent_claims:
                 # print(f"\tthis is a wonky tx, contains unlinked claim update {claim_hash.hex()}")
@@ -511,6 +503,7 @@ class BlockProcessor:
                         previous_claim.amount
                     ).get_remove_activate_ops()
                 )
+            previous_amount = previous_claim.amount
 
         self.db.claim_to_txo[claim_hash] = ClaimToTXOValue(
             tx_num, nout, root_tx_num, root_idx, txo.amount, channel_signature_is_valid, claim_name
@@ -524,11 +517,13 @@ class BlockProcessor:
         self.txo_to_claim[(tx_num, nout)] = pending
         self.claim_hash_to_txo[claim_hash] = (tx_num, nout)
         self.db_op_stack.extend_ops(pending.get_add_claim_utxo_ops())
-        self.trending_db.add_event({"claim_hash": claim_hash,
-                                      "event": "upsert",
-                                      "lbc":   1E-8*txo.amount})
 
-    def _add_support(self, txo: 'Output', tx_num: int, nout: int):
+        # add the spike for trending
+        self.db_op_stack.append_op(self.db.prefix_db.trending_spike.pack_spike(
+            height, claim_hash, tx_num, nout, txo.amount - previous_amount, half_life=self.env.trending_half_life
+        ))
+
+    def _add_support(self, height: int, txo: 'Output', tx_num: int, nout: int):
         supported_claim_hash = txo.claim_hash[::-1]
         self.support_txos_by_claim[supported_claim_hash].append((tx_num, nout))
         self.support_txo_to_claim[(tx_num, nout)] = supported_claim_hash, txo.amount
@@ -536,49 +531,54 @@ class BlockProcessor:
         self.db_op_stack.extend_ops(StagedClaimtrieSupport(
             supported_claim_hash, tx_num, nout, txo.amount
         ).get_add_support_utxo_ops())
-        self.trending_db.add_event({"claim_hash": supported_claim_hash,
+
-                                      "event": "support",
+        # add the spike for trending
-                                      "lbc":   1E-8*txo.amount})
+        self.db_op_stack.append_op(self.db.prefix_db.trending_spike.pack_spike(
+            height, supported_claim_hash, tx_num, nout, txo.amount, half_life=self.env.trending_half_life
+        ))
 
     def _add_claim_or_support(self, height: int, tx_hash: bytes, tx_num: int, nout: int, txo: 'Output',
                               spent_claims: typing.Dict[bytes, Tuple[int, int, str]]):
         if txo.script.is_claim_name or txo.script.is_update_claim:
             self._add_claim_or_update(height, txo, tx_hash, tx_num, nout, spent_claims)
         elif txo.script.is_support_claim or txo.script.is_support_claim_data:
-            self._add_support(txo, tx_num, nout)
+            self._add_support(height, txo, tx_num, nout)
 
-    def _spend_support_txo(self, txin):
+    def _spend_support_txo(self, height: int, txin: TxInput):
         txin_num = self.db.transaction_num_mapping[txin.prev_hash]
+        activation = 0
         if (txin_num, txin.prev_idx) in self.support_txo_to_claim:
             spent_support, support_amount = self.support_txo_to_claim.pop((txin_num, txin.prev_idx))
             self.support_txos_by_claim[spent_support].remove((txin_num, txin.prev_idx))
             supported_name = self._get_pending_claim_name(spent_support)
-            # print(f"\tspent support for {spent_support.hex()}")
             self.removed_support_txos_by_name_by_claim[supported_name][spent_support].append((txin_num, txin.prev_idx))
-            self.db_op_stack.extend_ops(StagedClaimtrieSupport(
+            txin_height = height
-                spent_support, txin_num, txin.prev_idx, support_amount
+        else:
-            ).get_spend_support_txo_ops())
-            self.trending_db.add_event({"claim_hash": spent_support,
-                                          "event": "support",
-                                          "lbc": -1E-8*support_amount})
-
             spent_support, support_amount = self.db.get_supported_claim_from_txo(txin_num, txin.prev_idx)
-        if spent_support:
+            if not spent_support:  # it is not a support
+                return
             supported_name = self._get_pending_claim_name(spent_support)
             if supported_name is not None:
-                self.removed_support_txos_by_name_by_claim[supported_name][spent_support].append((txin_num, txin.prev_idx))
+                self.removed_support_txos_by_name_by_claim[supported_name][spent_support].append(
+                    (txin_num, txin.prev_idx))
             activation = self.db.get_activation(txin_num, txin.prev_idx, is_support=True)
+            txin_height = bisect_right(self.db.tx_counts, self.db.transaction_num_mapping[txin.prev_hash])
             if 0 < activation < self.height + 1:
                 self.removed_active_support_amount_by_claim[spent_support].append(support_amount)
-            # print(f"\tspent support for {spent_support.hex()} activation:{activation} {support_amount}")
-            self.db_op_stack.extend_ops(StagedClaimtrieSupport(
-                spent_support, txin_num, txin.prev_idx, support_amount
-            ).get_spend_support_txo_ops())
             if supported_name is not None and activation > 0:
                 self.db_op_stack.extend_ops(StagedActivation(
                     ACTIVATED_SUPPORT_TXO_TYPE, spent_support, txin_num, txin.prev_idx, activation, supported_name,
                     support_amount
                 ).get_remove_activate_ops())
+        # print(f"\tspent support for {spent_support.hex()} activation:{activation} {support_amount}")
+        self.db_op_stack.extend_ops(StagedClaimtrieSupport(
+            spent_support, txin_num, txin.prev_idx, support_amount
+        ).get_spend_support_txo_ops())
+        # add the spike for trending
+        self.db_op_stack.append_op(self.db.prefix_db.trending_spike.pack_spike(
+            height, spent_support, txin_num, txin.prev_idx, support_amount, subtract=True,
+            depth=height-txin_height-1, half_life=self.env.trending_half_life
+        ))
 
     def _spend_claim_txo(self, txin: TxInput, spent_claims: Dict[bytes, Tuple[int, int, str]]) -> bool:
         txin_num = self.db.transaction_num_mapping[txin.prev_hash]
@@ -602,9 +602,9 @@ class BlockProcessor:
         self.db_op_stack.extend_ops(spent.get_spend_claim_txo_ops())
         return True
 
-    def _spend_claim_or_support_txo(self, txin, spent_claims):
+    def _spend_claim_or_support_txo(self, height: int, txin: TxInput, spent_claims):
         if not self._spend_claim_txo(txin, spent_claims):
-            self._spend_support_txo(txin)
+            self._spend_support_txo(height, txin)
 
     def _abandon_claim(self, claim_hash: bytes, tx_num: int, nout: int, normalized_name: str):
         if (tx_num, nout) in self.txo_to_claim:
@@ -639,9 +639,6 @@ class BlockProcessor:
         if normalized_name.startswith('@'):  # abandon a channel, invalidate signatures
             self._invalidate_channel_signatures(claim_hash)
 
-        self.trending_db.add_event({"claim_hash": claim_hash,
-                                      "event": "delete"})
-
     def _invalidate_channel_signatures(self, claim_hash: bytes):
         for k, signed_claim_hash in self.db.db.iterator(
                 prefix=Prefixes.channel_to_claim.pack_partial_key(claim_hash)):
@@ -1216,7 +1213,7 @@ class BlockProcessor:
                     if tx_count not in self.hashXs_by_tx[hashX]:
                         self.hashXs_by_tx[hashX].append(tx_count)
                 # spend claim/support txo
-                spend_claim_or_support_txo(txin, spent_claims)
+                spend_claim_or_support_txo(height, txin, spent_claims)
 
             # Add the new UTXOs
             for nout, txout in enumerate(tx.outputs):

lbry/wallet/server/db/__init__.py

@@ -37,3 +37,4 @@ class DB_PREFIXES(enum.Enum):
     hashx_utxo = b'h'
     hashx_history = b'x'
     db_state = b's'
+    trending_spike = b't'

lbry/wallet/server/db/elasticsearch/constants.py

@@ -31,7 +31,8 @@ INDEX_DEFAULT_SETTINGS = {
             "claim_type": {"type": "byte"},
             "censor_type": {"type": "byte"},
             "trending_score": {"type": "float"},
-            "release_time": {"type": "long"},
+            "trending_score_change": {"type": "float"},
+            "release_time": {"type": "long"}
         }
     }
 }
@@ -53,7 +54,7 @@ FIELDS = {
     'duration', 'release_time',
     'tags', 'languages', 'has_source', 'reposted_claim_type',
     'reposted_claim_id', 'repost_count',
-    'trending_score', 'tx_num'
+    'trending_score', 'tx_num', 'trending_score_change'
 }
 
 TEXT_FIELDS = {'author', 'canonical_url', 'channel_id', 'description', 'claim_id', 'censoring_channel_id',
@@ -66,7 +67,7 @@ RANGE_FIELDS = {
     'timestamp', 'creation_timestamp', 'duration', 'release_time', 'fee_amount',
     'tx_position', 'channel_join', 'repost_count', 'limit_claims_per_channel',
     'amount', 'effective_amount', 'support_amount',
-    'trending_score', 'censor_type', 'tx_num'
+    'trending_score', 'censor_type', 'tx_num', 'trending_score_change'
 }
 
 ALL_FIELDS = RANGE_FIELDS | TEXT_FIELDS | FIELDS

lbry/wallet/server/db/elasticsearch/search.py

@@ -1,3 +1,4 @@
+import math
 import asyncio
 import struct
 from binascii import unhexlify
@@ -9,7 +10,6 @@ from typing import Optional, List, Iterable, Union
 from elasticsearch import AsyncElasticsearch, NotFoundError, ConnectionError
 from elasticsearch.helpers import async_streaming_bulk
 
-from lbry.crypto.base58 import Base58
 from lbry.error import ResolveCensoredError, TooManyClaimSearchParametersError
 from lbry.schema.result import Outputs, Censor
 from lbry.schema.tags import clean_tags
@@ -43,7 +43,8 @@ class IndexVersionMismatch(Exception):
 class SearchIndex:
     VERSION = 1
 
-    def __init__(self, index_prefix: str, search_timeout=3.0, elastic_host='localhost', elastic_port=9200):
+    def __init__(self, index_prefix: str, search_timeout=3.0, elastic_host='localhost', elastic_port=9200,
+                 half_life=0.4, whale_threshold=10000, whale_half_life=0.99):
         self.search_timeout = search_timeout
         self.sync_timeout = 600  # wont hit that 99% of the time, but can hit on a fresh import
         self.search_client: Optional[AsyncElasticsearch] = None
@@ -56,6 +57,9 @@ class SearchIndex:
         self.resolution_cache = LRUCache(2 ** 17)
         self._elastic_host = elastic_host
         self._elastic_port = elastic_port
+        self._trending_half_life = half_life
+        self._trending_whale_threshold = whale_threshold
+        self._trending_whale_half_life = whale_half_life
 
     async def get_index_version(self) -> int:
         try:
@@ -121,7 +125,7 @@ class SearchIndex:
                 }
             count += 1
             if count % 100 == 0:
-                self.logger.debug("Indexing in progress, %d claims.", count)
+                self.logger.info("Indexing in progress, %d claims.", count)
         if count:
             self.logger.info("Indexing done for %d claims.", count)
         else:
@@ -140,19 +144,57 @@ class SearchIndex:
         self.logger.debug("Indexing done.")
 
     def update_filter_query(self, censor_type, blockdict, channels=False):
-        blockdict = {key.hex(): value.hex() for key, value in blockdict.items()}
+        blockdict = {blocked.hex(): blocker.hex() for blocked, blocker in blockdict.items()}
         if channels:
             update = expand_query(channel_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
         else:
             update = expand_query(claim_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
         key = 'channel_id' if channels else 'claim_id'
         update['script'] = {
-            "source": f"ctx._source.censor_type={censor_type}; ctx._source.censoring_channel_id=params[ctx._source.{key}]",
+            "source": f"ctx._source.censor_type={censor_type}; "
+                      f"ctx._source.censoring_channel_id=params[ctx._source.{key}];",
             "lang": "painless",
             "params": blockdict
         }
         return update
 
+    async def apply_update_and_decay_trending_score(self):
+        update_trending_score_script = """
+        if (ctx._source.trending_score == null) {
+            ctx._source.trending_score = ctx._source.trending_score_change;
+        } else {
+            ctx._source.trending_score += ctx._source.trending_score_change;
+        }
+        ctx._source.trending_score_change = 0.0;
+        """
+        await self.sync_client.update_by_query(
+            self.index, body={
+                'query': {
+                    'bool': {'must_not': [{'match': {'trending_score_change': 0.0}}]}
+                },
+                'script': {'source': update_trending_score_script, 'lang': 'painless'}
+            }, slices=4, conflicts='proceed'
+        )
+
+        whale_decay_factor = 2 * (2.0 ** (-1 / self._trending_whale_half_life))
+        decay_factor = 2 * (2.0 ** (-1 / self._trending_half_life))
+        decay_script = """
+        if (ctx._source.trending_score == null) { ctx._source.trending_score = 0.0; }
+        if ((-0.000001 <= ctx._source.trending_score) && (ctx._source.trending_score <= 0.000001)) {
+            ctx._source.trending_score = 0.0;
+        } else if (ctx._source.effective_amount >= %s) {
+            ctx._source.trending_score *= %s;
+        } else {
+            ctx._source.trending_score *= %s;
+        }
+        """ % (self._trending_whale_threshold, whale_decay_factor, decay_factor)
+        await self.sync_client.update_by_query(
+            self.index, body={
+                'query': {'bool': {'must_not': [{'match': {'trending_score': 0.0}}]}},
+                'script': {'source': decay_script, 'lang': 'painless'}
+            }, slices=4, conflicts='proceed'
+        )
+
     async def apply_filters(self, blocked_streams, blocked_channels, filtered_streams, filtered_channels):
         if filtered_streams:
             await self.sync_client.update_by_query(

lbry/wallet/server/db/prefixes.py

@@ -463,6 +463,21 @@ class TouchedOrDeletedClaimValue(typing.NamedTuple):
                f"deleted_claims={','.join(map(lambda x: x.hex(), self.deleted_claims))})"
 
 
+class TrendingSpikeKey(typing.NamedTuple):
+    height: int
+    claim_hash: bytes
+    tx_num: int
+    position: int
+
+    def __str__(self):
+        return f"{self.__class__.__name__}(height={self.height}, claim_hash={self.claim_hash.hex()}, " \
+               f"tx_num={self.tx_num}, position={self.position})"
+
+
+class TrendingSpikeValue(typing.NamedTuple):
+    mass: float
+
+
 class ActiveAmountPrefixRow(PrefixRow):
     prefix = DB_PREFIXES.active_amount.value
     key_struct = struct.Struct(b'>20sBLLH')
@@ -1335,6 +1350,47 @@ class TouchedOrDeletedPrefixRow(PrefixRow):
         return cls.pack_key(height), cls.pack_value(touched, deleted)
 
 
+class TrendingSpikePrefixRow(PrefixRow):
+    prefix = DB_PREFIXES.trending_spike.value
+    key_struct = struct.Struct(b'>L20sLH')
+    value_struct = struct.Struct(b'>f')
+
+    key_part_lambdas = [
+        lambda: b'',
+        struct.Struct(b'>L').pack,
+        struct.Struct(b'>L20s').pack,
+        struct.Struct(b'>L20sL').pack,
+        struct.Struct(b'>L20sLH').pack
+    ]
+
+    def pack_spike(self, height: int, claim_hash: bytes, tx_num: int, position: int, amount: int, half_life: int,
+                   depth: int = 0, subtract: bool = False) -> RevertablePut:
+        softened_change = (((amount * 1E-8) + 1E-8) ** 0.25).real
+        spike_mass = (-1.0 if subtract else 1.0) * softened_change * 2 * ((2.0 ** (-1 / half_life)) ** depth)
+        # trending_spike_height = self.height + delay_trending_spike(self.amount * 1E-8)
+        return RevertablePut(*self.pack_item(height, claim_hash, tx_num, position, spike_mass))
+
+    @classmethod
+    def pack_key(cls, height: int, claim_hash: bytes, tx_num: int, position: int):
+        return super().pack_key(height, claim_hash, tx_num, position)
+
+    @classmethod
+    def unpack_key(cls, key: bytes) -> TrendingSpikeKey:
+        return TrendingSpikeKey(*super().unpack_key(key))
+
+    @classmethod
+    def pack_value(cls, mass: float) -> bytes:
+        return super().pack_value(mass)
+
+    @classmethod
+    def unpack_value(cls, data: bytes) -> TrendingSpikeValue:
+        return TrendingSpikeValue(*cls.value_struct.unpack(data))
+
+    @classmethod
+    def pack_item(cls, height: int, claim_hash: bytes, tx_num: int, position: int, mass: float):
+        return cls.pack_key(height, claim_hash, tx_num, position), cls.pack_value(mass)
+
+
 class Prefixes:
     claim_to_support = ClaimToSupportPrefixRow
     support_to_claim = SupportToClaimPrefixRow
@@ -1369,6 +1425,7 @@ class Prefixes:
     tx = TXPrefixRow
     header = BlockHeaderPrefixRow
     touched_or_deleted = TouchedOrDeletedPrefixRow
+    trending_spike = TrendingSpikePrefixRow
 
 
 class PrefixDB:
@@ -1402,6 +1459,7 @@ class PrefixDB:
         self.tx = TXPrefixRow(db, op_stack)
         self.header = BlockHeaderPrefixRow(db, op_stack)
         self.touched_or_deleted = TouchedOrDeletedPrefixRow(db, op_stack)
+        self.trending_spike = TrendingSpikePrefixRow(db, op_stack)
 
     def commit(self):
         try:

lbry/wallet/server/env.py

@@ -42,6 +42,9 @@ class Env:
         self.trending_algorithms = [
             trending for trending in set(self.default('TRENDING_ALGORITHMS', 'zscore').split(' ')) if trending
         ]
+        self.trending_half_life = float(self.string_amount('TRENDING_HALF_LIFE', "0.9"))
+        self.trending_whale_half_life = float(self.string_amount('TRENDING_WHALE_HALF_LIFE', "0.99"))
+        self.trending_whale_threshold = float(self.integer('TRENDING_WHALE_THRESHOLD', 10000))
         self.max_query_workers = self.integer('MAX_QUERY_WORKERS', None)
         self.individual_tag_indexes = self.boolean('INDIVIDUAL_TAG_INDEXES', True)
         self.track_metrics = self.boolean('TRACK_METRICS', False)

lbry/wallet/server/leveldb.py

@@ -22,7 +22,7 @@ from typing import Optional, Iterable, Tuple, DefaultDict, Set, Dict, List
 from functools import partial
 from asyncio import sleep
 from bisect import bisect_right
-from collections import defaultdict, OrderedDict
+from collections import defaultdict
 
 from lbry.error import ResolveCensoredError
 from lbry.schema.result import Censor
@@ -38,7 +38,6 @@ from lbry.wallet.server.db.revertable import RevertableOpStack
 from lbry.wallet.server.db.prefixes import Prefixes, PendingActivationValue, ClaimTakeoverValue, ClaimToTXOValue, PrefixDB
 from lbry.wallet.server.db.prefixes import ACTIVATED_CLAIM_TXO_TYPE, ACTIVATED_SUPPORT_TXO_TYPE
 from lbry.wallet.server.db.prefixes import PendingActivationKey, TXOToClaimValue
-from lbry.wallet.server.db.trending import TrendingDB
 from lbry.wallet.transaction import OutputScript
 from lbry.schema.claim import Claim, guess_stream_type
 from lbry.wallet.ledger import Ledger, RegTestLedger, TestNetLedger
@@ -150,13 +149,15 @@ class LevelDB:
         self.total_transactions = None
         self.transaction_num_mapping = {}
 
-        self.claim_to_txo: typing.OrderedDict[bytes, ClaimToTXOValue] = OrderedDict()
+        self.claim_to_txo: Dict[bytes, ClaimToTXOValue] = {}
-        self.txo_to_claim: typing.OrderedDict[Tuple[int, int], bytes] = OrderedDict()
+        self.txo_to_claim: Dict[Tuple[int, int], bytes] = {}
 
         # Search index
         self.search_index = SearchIndex(
             self.env.es_index_prefix, self.env.database_query_timeout,
-            elastic_host=env.elastic_host, elastic_port=env.elastic_port
+            elastic_host=env.elastic_host, elastic_port=env.elastic_port,
+            half_life=self.env.trending_half_life, whale_threshold=self.env.trending_whale_threshold,
+            whale_half_life=self.env.trending_whale_half_life
         )
 
         self.genesis_bytes = bytes.fromhex(self.coin.GENESIS_HASH)
@@ -168,8 +169,6 @@ class LevelDB:
         else:
             self.ledger = RegTestLedger
 
-        self.trending_db = TrendingDB(self.env.db_dir)
-
     def get_claim_from_txo(self, tx_num: int, tx_idx: int) -> Optional[TXOToClaimValue]:
         claim_hash_and_name = self.db.get(Prefixes.txo_to_claim.pack_key(tx_num, tx_idx))
         if not claim_hash_and_name:
@@ -188,6 +187,12 @@ class LevelDB:
             cnt += 1
         return cnt
 
+    def get_trending_spike_sum(self, height: int, claim_hash: bytes) -> float:
+        spikes = 0.0
+        for k, v in self.prefix_db.trending_spike.iterate(prefix=(height, claim_hash)):
+            spikes += v.mass
+        return spikes
+
     def get_activation(self, tx_num, position, is_support=False) -> int:
         activation = self.db.get(
             Prefixes.activated.pack_key(
@@ -704,12 +709,9 @@ class LevelDB:
             'censor_type': Censor.RESOLVE if blocked_hash else Censor.SEARCH if filtered_hash else Censor.NOT_CENSORED,
             'censoring_channel_id': (blocked_hash or filtered_hash or b'').hex() or None,
             'claims_in_channel': None if not metadata.is_channel else self.get_claims_in_channel_count(claim_hash),
-            'trending_score': self.trending_db.get_trending_score(claim_hash)
+            'trending_score_change': self.get_trending_spike_sum(self.db_height, claim_hash)
-            # 'trending_group': 0,
-            # 'trending_mixed': 0,
-            # 'trending_local': 0,
-            # 'trending_global': 0,
         }
+
         if metadata.is_repost and reposted_duration is not None:
             value['duration'] = reposted_duration
         elif metadata.is_stream and (metadata.stream.video.duration or metadata.stream.audio.duration):
@@ -748,7 +750,7 @@ class LevelDB:
                 self.logger.warning("can't sync non existent claim to ES: %s", claim_hash.hex())
                 continue
             name = self.claim_to_txo[claim_hash].normalized_name
-            if not self.db.get(Prefixes.claim_takeover.pack_key(name)):
+            if not self.prefix_db.claim_takeover.get(name):
                 self.logger.warning("can't sync non existent claim to ES: %s", claim_hash.hex())
                 continue
             claim = self._fs_get_claim_by_hash(claim_hash)
@@ -944,6 +946,11 @@ class LevelDB:
                     stop=Prefixes.touched_or_deleted.pack_key(min_height), include_value=False
                 )
             )
+            delete_undo_keys.extend(
+                self.db.iterator(
+                    prefix=Prefixes.trending_spike.pack_partial_key(min_height), include_value=False
+                )
+            )
 
         with self.db.write_batch(transaction=True) as batch:
             batch_put = batch.put