forked from LBRYCommunity/lbry-sdk
518 lines
24 KiB
Python
518 lines
24 KiB
Python
import asyncio
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import struct
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from binascii import hexlify, unhexlify
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from decimal import Decimal
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from operator import itemgetter
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from typing import Optional, List, Iterable
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from elasticsearch import AsyncElasticsearch, NotFoundError, ConnectionError
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from elasticsearch.helpers import async_streaming_bulk
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from lbry.crypto.base58 import Base58
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from lbry.error import ResolveCensoredError, claim_id as parse_claim_id
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from lbry.schema.result import Outputs, Censor
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from lbry.schema.tags import clean_tags
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from lbry.schema.url import URL, normalize_name
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from lbry.utils import LRUCache
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from lbry.wallet.server.db.common import CLAIM_TYPES, STREAM_TYPES
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from lbry.wallet.server.util import class_logger
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class SearchIndex:
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def __init__(self, index_prefix: str):
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self.client: Optional[AsyncElasticsearch] = None
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self.index = index_prefix + 'claims'
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self.sync_timeout = 600 # wont hit that 99% of the time, but can hit on a fresh import
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self.logger = class_logger(__name__, self.__class__.__name__)
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self.claim_cache = LRUCache(2 ** 15) # invalidated on touched
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self.short_id_cache = LRUCache(2 ** 17) # never invalidated, since short ids are forever
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async def start(self):
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if self.client:
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return
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self.client = AsyncElasticsearch(timeout=self.sync_timeout)
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while True:
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try:
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await self.client.cluster.health(wait_for_status='yellow')
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break
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except ConnectionError:
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self.logger.warning("Failed to connect to Elasticsearch. Waiting for it!")
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await asyncio.sleep(1)
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res = await self.client.indices.create(
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self.index,
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{
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"settings":
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{"analysis":
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{"analyzer": {
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"default": {"tokenizer": "whitespace", "filter": ["lowercase", "porter_stem"]}}},
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"index":
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{"refresh_interval": -1,
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"number_of_shards": 1,
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"number_of_replicas": 0}
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},
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"mappings": {
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"properties": {
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"claim_id": {
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"fields": {
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"keyword": {
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"ignore_above": 256,
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"type": "keyword"
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}
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},
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"type": "text",
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"index_prefixes": {
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"min_chars": 1,
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"max_chars": 10
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}
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},
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"height": {"type": "integer"},
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"claim_type": {"type": "byte"},
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"censor_type": {"type": "byte"},
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"trending_mixed": {"type": "float"},
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}
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}
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}, ignore=400
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)
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return res.get('acknowledged', False)
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def stop(self):
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client = self.client
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self.client = None
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return asyncio.ensure_future(client.close())
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def delete_index(self):
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return self.client.indices.delete(self.index, ignore_unavailable=True)
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async def _consume_claim_producer(self, claim_producer):
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count = 0
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for op, doc in claim_producer:
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if op == 'delete':
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yield {'_index': self.index, '_op_type': 'delete', '_id': doc}
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else:
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yield extract_doc(doc, self.index)
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count += 1
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if count % 100:
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self.logger.info("Indexing in progress, %d claims.", count)
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self.logger.info("Indexing done for %d claims.", count)
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async def claim_consumer(self, claim_producer):
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await self.client.indices.refresh(self.index)
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touched = set()
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async for ok, item in async_streaming_bulk(self.client, self._consume_claim_producer(claim_producer)):
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if not ok:
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self.logger.warning("indexing failed for an item: %s", item)
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else:
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item = item.popitem()[1]
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touched.add(item['_id'])
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await self.client.indices.refresh(self.index)
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await self.client.indices.flush(self.index)
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for claim_id in touched:
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if claim_id in self.claim_cache:
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self.claim_cache.pop(claim_id)
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self.logger.info("Indexing done.")
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async def apply_filters(self, blocked_streams, blocked_channels, filtered_streams, filtered_channels):
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def make_query(censor_type, blockdict, channels=False):
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blockdict = dict(
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(hexlify(key[::-1]).decode(), hexlify(value[::-1]).decode()) for key, value in blockdict.items())
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if channels:
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update = expand_query(channel_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
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else:
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update = expand_query(claim_id__in=list(blockdict.keys()), censor_type=f"<{censor_type}")
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for claim_id in blockdict:
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if claim_id in self.claim_cache:
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self.claim_cache.pop(claim_id)
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key = 'channel_id' if channels else 'claim_id'
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update['script'] = {
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"source": f"ctx._source.censor_type={censor_type}; ctx._source.censoring_channel_hash=params[ctx._source.{key}]",
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"lang": "painless",
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"params": blockdict
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}
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return update
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if filtered_streams:
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await self.client.update_by_query(self.index, body=make_query(1, filtered_streams), slices=32)
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await self.client.indices.refresh(self.index)
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if filtered_channels:
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await self.client.update_by_query(self.index, body=make_query(1, filtered_channels), slices=32)
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await self.client.indices.refresh(self.index)
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await self.client.update_by_query(self.index, body=make_query(1, filtered_channels, True), slices=32)
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await self.client.indices.refresh(self.index)
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if blocked_streams:
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await self.client.update_by_query(self.index, body=make_query(2, blocked_streams), slices=32)
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await self.client.indices.refresh(self.index)
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if blocked_channels:
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await self.client.update_by_query(self.index, body=make_query(2, blocked_channels), slices=32)
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await self.client.indices.refresh(self.index)
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await self.client.update_by_query(self.index, body=make_query(2, blocked_channels, True), slices=32)
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await self.client.indices.refresh(self.index)
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async def delete_above_height(self, height):
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await self.client.delete_by_query(self.index, expand_query(height='>'+str(height)))
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await self.client.indices.refresh(self.index)
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async def session_query(self, query_name, kwargs):
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offset, total = kwargs.get('offset', 0) if isinstance(kwargs, dict) else 0, 0
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total_referenced = []
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if query_name == 'resolve':
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total_referenced, response, censor = await self.resolve(*kwargs)
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else:
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censor = Censor(Censor.SEARCH)
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response, offset, total = await self.search(**kwargs)
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censor.apply(response)
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total_referenced.extend(response)
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if censor.censored:
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response, _, _ = await self.search(**kwargs, censor_type=0)
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total_referenced.extend(response)
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return Outputs.to_base64(response, await self._get_referenced_rows(total_referenced), offset, total, censor)
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async def resolve(self, *urls):
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censor = Censor(Censor.RESOLVE)
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results = [await self.resolve_url(url) for url in urls]
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censored = [
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result if not isinstance(result, dict) or not censor.censor(result)
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else ResolveCensoredError(url, result['censoring_channel_hash'])
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for url, result in zip(urls, results)
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]
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return results, censored, censor
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async def get_many(self, *claim_ids):
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missing = [claim_id for claim_id in claim_ids if claim_id not in self.claim_cache]
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if missing:
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results = await self.client.mget(index=self.index, body={"ids": missing},
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_source_excludes=['description', 'title'])
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results = expand_result(filter(lambda doc: doc['found'], results["docs"]))
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for result in results:
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self.claim_cache.set(result['claim_id'], result)
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return list(filter(None, map(self.claim_cache.get, claim_ids)))
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async def full_id_from_short_id(self, name, short_id, channel_id=None):
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key = (channel_id or '') + name + short_id
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if key not in self.short_id_cache:
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query = {'name': name, 'claim_id': short_id}
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if channel_id:
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query['channel_id'] = channel_id
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query['order_by'] = ['^channel_join']
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query['channel_id'] = channel_id
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query['signature_valid'] = True
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else:
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query['order_by'] = '^creation_height'
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result, _, _ = await self.search(**query, limit=1)
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if len(result) == 1:
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result = result[0]['claim_id']
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self.short_id_cache[key] = result
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return self.short_id_cache.get(key, None)
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async def search(self, **kwargs):
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if 'channel' in kwargs:
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result = await self.resolve_url(kwargs.pop('channel'))
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if not result or not isinstance(result, Iterable):
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return [], 0, 0
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kwargs['channel_id'] = result['claim_id']
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try:
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result = await self.client.search(expand_query(**kwargs), index=self.index)
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except NotFoundError:
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# index has no docs, fixme: log something
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return [], 0, 0
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return expand_result(result['hits']['hits']), 0, result['hits']['total']['value']
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async def resolve_url(self, raw_url):
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try:
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url = URL.parse(raw_url)
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except ValueError as e:
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return e
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stream = LookupError(f'Could not find claim at "{raw_url}".')
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channel_id = await self.resolve_channel_id(url)
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if isinstance(channel_id, LookupError):
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return channel_id
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stream = (await self.resolve_stream(url, channel_id if isinstance(channel_id, str) else None)) or stream
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if url.has_stream:
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result = stream
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else:
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if isinstance(channel_id, str):
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result = (await self.get_many(channel_id))
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result = result[0] if len(result) else LookupError(f'Could not find channel in "{url}".')
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else:
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result = channel_id
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return result
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async def resolve_channel_id(self, url: URL):
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if not url.has_channel:
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return
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if url.channel.is_fullid:
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return url.channel.claim_id
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if url.channel.is_shortid:
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channel_id = await self.full_id_from_short_id(url.channel.name, url.channel.claim_id)
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if not channel_id:
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return LookupError(f'Could not find channel in "{url}".')
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return channel_id
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query = url.channel.to_dict()
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if set(query) == {'name'}:
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query['is_controlling'] = True
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else:
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query['order_by'] = ['^creation_height']
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matches, _, _ = await self.search(**query, limit=1)
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if matches:
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channel_id = matches[0]['claim_id']
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else:
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return LookupError(f'Could not find channel in "{url}".')
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return channel_id
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async def resolve_stream(self, url: URL, channel_id: str = None):
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if not url.has_stream:
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return None
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if url.has_channel and channel_id is None:
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return None
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query = url.stream.to_dict()
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if url.stream.claim_id is not None:
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if url.stream.is_fullid:
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claim_id = url.stream.claim_id
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else:
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claim_id = await self.full_id_from_short_id(query['name'], query['claim_id'], channel_id)
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stream = await self.get_many(claim_id)
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return stream[0] if len(stream) else None
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if channel_id is not None:
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if set(query) == {'name'}:
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# temporarily emulate is_controlling for claims in channel
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query['order_by'] = ['effective_amount', '^height']
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else:
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query['order_by'] = ['^channel_join']
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query['channel_id'] = channel_id
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query['signature_valid'] = True
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elif set(query) == {'name'}:
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query['is_controlling'] = True
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matches, _, _ = await self.search(**query, limit=1)
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if matches:
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return matches[0]
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async def _get_referenced_rows(self, txo_rows: List[dict]):
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txo_rows = [row for row in txo_rows if isinstance(row, dict)]
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repost_hashes = set(filter(None, map(itemgetter('reposted_claim_id'), txo_rows)))
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channel_hashes = set(filter(None, (row['channel_id'] for row in txo_rows)))
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channel_hashes |= set(map(parse_claim_id, filter(None, (row['censoring_channel_hash'] for row in txo_rows))))
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reposted_txos = []
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if repost_hashes:
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reposted_txos = await self.get_many(*repost_hashes)
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channel_hashes |= set(filter(None, (row['channel_id'] for row in reposted_txos)))
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channel_txos = []
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if channel_hashes:
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channel_txos = await self.get_many(*channel_hashes)
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# channels must come first for client side inflation to work properly
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return channel_txos + reposted_txos
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def extract_doc(doc, index):
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doc['claim_id'] = hexlify(doc.pop('claim_hash')[::-1]).decode()
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if doc['reposted_claim_hash'] is not None:
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doc['reposted_claim_id'] = hexlify(doc.pop('reposted_claim_hash')[::-1]).decode()
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else:
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doc['reposted_claim_id'] = None
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channel_hash = doc.pop('channel_hash')
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doc['channel_id'] = hexlify(channel_hash[::-1]).decode() if channel_hash else channel_hash
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channel_hash = doc.pop('censoring_channel_hash')
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doc['censoring_channel_hash'] = hexlify(channel_hash[::-1]).decode() if channel_hash else channel_hash
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txo_hash = doc.pop('txo_hash')
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doc['tx_id'] = hexlify(txo_hash[:32][::-1]).decode()
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doc['tx_nout'] = struct.unpack('<I', txo_hash[32:])[0]
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doc['is_controlling'] = bool(doc['is_controlling'])
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doc['signature'] = hexlify(doc.pop('signature') or b'').decode() or None
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doc['signature_digest'] = hexlify(doc.pop('signature_digest') or b'').decode() or None
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doc['public_key_bytes'] = hexlify(doc.pop('public_key_bytes') or b'').decode() or None
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doc['public_key_hash'] = hexlify(doc.pop('public_key_hash') or b'').decode() or None
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doc['signature_valid'] = bool(doc['signature_valid'])
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doc['claim_type'] = doc.get('claim_type', 0) or 0
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doc['stream_type'] = int(doc.get('stream_type', 0) or 0)
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return {'doc': doc, '_id': doc['claim_id'], '_index': index, '_op_type': 'update',
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'doc_as_upsert': True}
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FIELDS = {'is_controlling', 'last_take_over_height', 'claim_id', 'claim_name', 'normalized', 'tx_position', 'amount',
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'timestamp', 'creation_timestamp', 'height', 'creation_height', 'activation_height', 'expiration_height',
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'release_time', 'short_url', 'canonical_url', 'title', 'author', 'description', 'claim_type', 'reposted',
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'stream_type', 'media_type', 'fee_amount', 'fee_currency', 'duration', 'reposted_claim_hash', 'censor_type',
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'claims_in_channel', 'channel_join', 'signature_valid', 'effective_amount', 'support_amount',
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'trending_group', 'trending_mixed', 'trending_local', 'trending_global', 'channel_id', 'tx_id', 'tx_nout',
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'signature', 'signature_digest', 'public_key_bytes', 'public_key_hash', 'public_key_id', '_id', 'tags',
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'reposted_claim_id'}
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TEXT_FIELDS = {'author', 'canonical_url', 'channel_id', 'claim_name', 'description', 'claim_id',
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'media_type', 'normalized', 'public_key_bytes', 'public_key_hash', 'short_url', 'signature',
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'signature_digest', 'stream_type', 'title', 'tx_id', 'fee_currency', 'reposted_claim_id', 'tags'}
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RANGE_FIELDS = {
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'height', 'creation_height', 'activation_height', 'expiration_height',
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'timestamp', 'creation_timestamp', 'duration', 'release_time', 'fee_amount',
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'tx_position', 'channel_join', 'reposted', 'limit_claims_per_channel',
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'amount', 'effective_amount', 'support_amount',
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'trending_group', 'trending_mixed', 'censor_type',
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'trending_local', 'trending_global',
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}
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REPLACEMENTS = {
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'name': 'normalized',
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'txid': 'tx_id',
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'claim_hash': '_id'
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}
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def expand_query(**kwargs):
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if "amount_order" in kwargs:
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kwargs["limit"] = 1
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kwargs["order_by"] = "effective_amount"
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kwargs["offset"] = int(kwargs["amount_order"]) - 1
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if 'name' in kwargs:
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kwargs['name'] = normalize_name(kwargs.pop('name'))
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if kwargs.get('is_controlling') is False:
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kwargs.pop('is_controlling')
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query = {'must': [], 'must_not': []}
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collapse = None
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for key, value in kwargs.items():
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key = key.replace('claim.', '')
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many = key.endswith('__in') or isinstance(value, list)
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if many:
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key = key.replace('__in', '')
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value = list(filter(None, value))
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if value is None or isinstance(value, list) and len(value) == 0:
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continue
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key = REPLACEMENTS.get(key, key)
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if key in FIELDS:
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partial_id = False
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if key == 'claim_type':
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if isinstance(value, str):
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value = CLAIM_TYPES[value]
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else:
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value = [CLAIM_TYPES[claim_type] for claim_type in value]
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if key == '_id':
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if isinstance(value, Iterable):
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value = [hexlify(item[::-1]).decode() for item in value]
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else:
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value = hexlify(value[::-1]).decode()
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if not many and key in ('_id', 'claim_id') and len(value) < 20:
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partial_id = True
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if key == 'public_key_id':
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key = 'public_key_hash'
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value = hexlify(Base58.decode(value)[1:21]).decode()
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if key == 'signature_valid':
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continue # handled later
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if key in TEXT_FIELDS:
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key += '.keyword'
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ops = {'<=': 'lte', '>=': 'gte', '<': 'lt', '>': 'gt'}
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if partial_id:
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query['must'].append({"prefix": {"claim_id": value}})
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elif key in RANGE_FIELDS and isinstance(value, str) and value[0] in ops:
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operator_length = 2 if value[:2] in ops else 1
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operator, value = value[:operator_length], value[operator_length:]
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if key == 'fee_amount':
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value = Decimal(value)*1000
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query['must'].append({"range": {key: {ops[operator]: value}}})
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elif many:
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query['must'].append({"terms": {key: value}})
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else:
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if key == 'fee_amount':
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value = Decimal(value)*1000
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query['must'].append({"term": {key: {"value": value}}})
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elif key == 'not_channel_ids':
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for channel_id in value:
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query['must_not'].append({"term": {'channel_id.keyword': channel_id}})
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query['must_not'].append({"term": {'_id': channel_id}})
|
|
elif key == 'channel_ids':
|
|
query['must'].append({"terms": {'channel_id.keyword': value}})
|
|
elif key == 'claim_ids':
|
|
query['must'].append({"terms": {'claim_id.keyword': value}})
|
|
elif key == 'media_types':
|
|
query['must'].append({"terms": {'media_type.keyword': value}})
|
|
elif key == 'stream_types':
|
|
query['must'].append({"terms": {'stream_type': [STREAM_TYPES[stype] for stype in value]}})
|
|
elif key == 'any_languages':
|
|
query['must'].append({"terms": {'languages': clean_tags(value)}})
|
|
elif key == 'any_languages':
|
|
query['must'].append({"terms": {'languages': value}})
|
|
elif key == 'all_languages':
|
|
query['must'].extend([{"term": {'languages': tag}} for tag in value])
|
|
elif key == 'any_tags':
|
|
query['must'].append({"terms": {'tags.keyword': clean_tags(value)}})
|
|
elif key == 'all_tags':
|
|
query['must'].extend([{"term": {'tags.keyword': tag}} for tag in clean_tags(value)])
|
|
elif key == 'not_tags':
|
|
query['must_not'].extend([{"term": {'tags.keyword': tag}} for tag in clean_tags(value)])
|
|
elif key == 'not_claim_id':
|
|
query['must_not'].extend([{"term": {'claim_id.keyword': cid}} for cid in value])
|
|
elif key == 'limit_claims_per_channel':
|
|
collapse = ('channel_id.keyword', value)
|
|
if kwargs.get('has_channel_signature'):
|
|
query['must'].append({"exists": {"field": "signature_digest"}})
|
|
if 'signature_valid' in kwargs:
|
|
query['must'].append({"term": {"signature_valid": bool(kwargs["signature_valid"])}})
|
|
elif 'signature_valid' in kwargs:
|
|
query.setdefault('should', [])
|
|
query["minimum_should_match"] = 1
|
|
query['should'].append({"bool": {"must_not": {"exists": {"field": "signature_digest"}}}})
|
|
query['should'].append({"term": {"signature_valid": bool(kwargs["signature_valid"])}})
|
|
if kwargs.get('text'):
|
|
query['must'].append(
|
|
{"simple_query_string":
|
|
{"query": kwargs["text"], "fields": [
|
|
"claim_name^4", "channel_name^8", "title^1", "description^.5", "author^1", "tags^.5"
|
|
]}})
|
|
query = {
|
|
"_source": {"excludes": ["description", "title"]},
|
|
'query': {'bool': query},
|
|
"sort": [],
|
|
}
|
|
if "limit" in kwargs:
|
|
query["size"] = kwargs["limit"]
|
|
if 'offset' in kwargs:
|
|
query["from"] = kwargs["offset"]
|
|
if 'order_by' in kwargs:
|
|
if isinstance(kwargs["order_by"], str):
|
|
kwargs["order_by"] = [kwargs["order_by"]]
|
|
for value in kwargs['order_by']:
|
|
if 'trending_group' in value:
|
|
# fixme: trending_mixed is 0 for all records on variable decay, making sort slow.
|
|
continue
|
|
is_asc = value.startswith('^')
|
|
value = value[1:] if is_asc else value
|
|
value = REPLACEMENTS.get(value, value)
|
|
if value in TEXT_FIELDS:
|
|
value += '.keyword'
|
|
query['sort'].append({value: "asc" if is_asc else "desc"})
|
|
if collapse:
|
|
query["collapse"] = {
|
|
"field": collapse[0],
|
|
"inner_hits": {
|
|
"name": collapse[0],
|
|
"size": collapse[1],
|
|
"sort": query["sort"]
|
|
}
|
|
}
|
|
return query
|
|
|
|
|
|
def expand_result(results):
|
|
inner_hits = []
|
|
expanded = []
|
|
for result in results:
|
|
if result.get("inner_hits"):
|
|
for _, inner_hit in result["inner_hits"].items():
|
|
inner_hits.extend(inner_hit["hits"]["hits"])
|
|
continue
|
|
result = result['_source']
|
|
result['claim_hash'] = unhexlify(result['claim_id'])[::-1]
|
|
if result['reposted_claim_id']:
|
|
result['reposted_claim_hash'] = unhexlify(result['reposted_claim_id'])[::-1]
|
|
else:
|
|
result['reposted_claim_hash'] = None
|
|
result['channel_hash'] = unhexlify(result['channel_id'])[::-1] if result['channel_id'] else None
|
|
result['txo_hash'] = unhexlify(result['tx_id'])[::-1] + struct.pack('<I', result['tx_nout'])
|
|
result['tx_hash'] = unhexlify(result['tx_id'])[::-1]
|
|
if result['censoring_channel_hash']:
|
|
result['censoring_channel_hash'] = unhexlify(result['censoring_channel_hash'])[::-1]
|
|
expanded.append(result)
|
|
if inner_hits:
|
|
return expand_result(inner_hits)
|
|
return expanded
|