Merge pull request #3343 from lbryio/example_es

add small example script showing how to read and update values to ES as we currently use it

scripts/example_update_es.py

@@ -0,0 +1,46 @@
+import asyncio
+from pprint import pprint
+
+from elasticsearch import AsyncElasticsearch
+from elasticsearch._async.helpers import async_scan, async_bulk
+
+DB = {}
+INDEX = 'claims'
+
+
+async def generate_support_amounts(client: AsyncElasticsearch):
+    async for doc in async_scan(client):
+        DB[doc['_id']] = doc['_source']['support_amount']
+        if len(DB) > 10:
+            break
+    pprint(DB)
+
+
+def generate_support_to_trending():
+    for claim_id, amount in DB.items():
+        yield {'doc': {"trending_mixed": amount}, '_id': claim_id, '_index': INDEX, '_op_type': 'update'}
+
+
+async def write_trending(client: AsyncElasticsearch):
+    await async_bulk(client, generate_support_to_trending())
+
+
+def get_client(host='localhost', port=9201):
+    hosts = [{'host': host, 'port': port}]
+    return AsyncElasticsearch(hosts, timeout=port)
+
+
+async def run():
+    client = get_client()
+    await generate_support_amounts(client)
+    await write_trending(client)
+    for claim_id, value in DB.items():
+        if value > 0:
+            break
+    doc = await client.get(INDEX, claim_id)
+    pprint(doc)
+    pprint(DB[claim_id])
+    await client.close()
+
+
+asyncio.get_event_loop().run_until_complete(run())