Print a list of Decentraland entity IDs for emotes deployed after a certain date.

dcl_get_some_entities.py

#!/usr/bin/env python3

import sys
import json
import urllib.request

def http_get(url):
    headers = {
        "User-Agent": "urllib" # Important! If empty, 403 Forbidden
    }

    request = urllib.request.Request(url, headers=headers)
    response = urllib.request.urlopen(request)
    content = response.read().decode('utf-8')

    return content


# Check the server status:
about = json.loads(http_get('https://peer.decentraland.org/about'))

if not about['healthy']:
    print("Server is not healthy!")
    sys.exit(1)

# Get the list of snapshots:
snapshots = json.loads(http_get('https://peer.decentraland.org/content/snapshots'))

# Obtain the file identifier tor the emote snapshot, and download it:
emote_snapshot_hash = snapshots['entities']['emote']['hash']
emote_snapshot_url = f'https://peer.decentraland.org/content/contents/{emote_snapshot_hash}'
emote_snapshot = http_get(emote_snapshot_url)

# IMPORTANT:
# This file is potentially huge (such is the case for profiles). We happen to know that 
# the emote snapshot is tiny, so we can buffer it like above, and even split it in-memory.
emote_snapshot_lines = emote_snapshot.split('\n')

# Check the header:
if emote_snapshot_lines[0] != '### Decentraland json snapshot':
    print("Invalid snapshot header!")
    sys.exit(1)

# Cool! Now, let's find all emote entities that were deployed after some arbitrary time:
emote_min_timestamp = 1667798160000

for line in emote_snapshot_lines[1:]:
    if len(line) == 0:
        break # the snapshot can end with a newline

    emote = json.loads(line)

    if emote['localTimestamp'] >= emote_min_timestamp:
        print(emote['entityId'])