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beacon_api.py
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beacon_api.py
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import requests
import os
def estimate_entry_waiting_time():
response = requests.get('https://beaconcha.in/api/v1/validators/queue')
data = response.json()
beacon_entering = data["data"]["beaconchain_entering"]
active_validators = data["data"]["validatorscount"]
churn_limit = max(4, active_validators // 65536)
activation_rate_per_epoch = churn_limit # 4 validators per epoch (every 6.4 minutes) as a minimum
waiting_time_epochs = beacon_entering / activation_rate_per_epoch
waiting_time_seconds = waiting_time_epochs * 12 * 32 # 12 seconds per slot, 32 slots per epoch
waiting_time_days = round(waiting_time_seconds // (24 * 3600))
remaining_seconds = waiting_time_seconds % (24 * 3600)
waiting_time_hours = round(remaining_seconds // 3600)
remaining_seconds = remaining_seconds % 3600
waiting_time_minutes = round(remaining_seconds // 60)
return waiting_time_days, waiting_time_hours, waiting_time_minutes, waiting_time_seconds, beacon_entering, active_validators
def estimate_exit_waiting_time():
validator_queue_url = "https://beaconcha.in/api/v1/validators/queue"
validator_queue_data = requests.get(validator_queue_url).json()
beacon_exiting = validator_queue_data["data"]["beaconchain_exiting"]
active_validators = validator_queue_data["data"]["validatorscount"]
churn_limit = max(4, active_validators // 65536)
waiting_time_epochs = beacon_exiting / churn_limit
waiting_time_seconds = waiting_time_epochs * 12 * 32 # 12 seconds per slot, 32 slots per epoch
waiting_time_days = round(waiting_time_seconds // (24 * 3600))
remaining_seconds = waiting_time_seconds % (24 * 3600)
waiting_time_hours = round(remaining_seconds // 3600)
remaining_seconds = remaining_seconds % 3600
waiting_time_minutes = round(remaining_seconds // 60)
return waiting_time_days, waiting_time_hours, waiting_time_minutes, waiting_time_seconds, beacon_exiting, active_validators
def format_value_and_units(value, units):
# Pluralization of day, hour, and minute all simply add "s" to the end
return str(value) + " " + (units if value == 1 else units + 's')
def format_list_for_display(strings):
if not strings:
return ""
elif len(strings) == 1:
# E.g. ["a"] -> "a"
return strings[0]
elif len(strings) == 2:
# E.g. ["a", "b"] -> "a and b"
return strings[0] + " and " + strings[1]
else:
# E.g. ["a", "b", "c"] -> "a, b, and c"
formatted_string = ", ".join(strings[:-1])
formatted_string += ", and " + strings[-1]
return formatted_string
def generate_duration_label(days, hours, minutes):
formatted_parts = []
if days > 0:
formatted_parts += [format_value_and_units(days, "day")]
if hours > 0:
formatted_parts += [format_value_and_units(hours, "hour")]
if minutes > 0:
formatted_parts += [format_value_and_units(minutes, "minute")]
if len(formatted_parts) == 0:
return "0 minutes"
else:
return format_list_for_display(formatted_parts)
def generate_html(entry_waiting_time_days, entry_waiting_time_hours, entry_waiting_time_minutes, beacon_entering, exit_waiting_time_days, exit_waiting_time_hours, exit_waiting_time_minutes, beacon_exiting, active_validators):
entry_waiting_time = generate_duration_label(entry_waiting_time_days, entry_waiting_time_hours, entry_waiting_time_minutes)
exit_waiting_time = generate_duration_label(exit_waiting_time_days, exit_waiting_time_hours, exit_waiting_time_minutes)
beacon_entering = "{:,}".format(beacon_entering)
beacon_exiting = "{:,}".format(beacon_exiting)
active_validators = "{:,}".format(active_validators)
html_content = f"""<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, user-scalable=no">
<title>Ethereum Validator Queue Status</title>
<style>
html {{
background-color: #f9f9f9;
}}
body {{
font-family: system-ui, Helvetica, Arial, sans;
margin: 0;
padding: 0px;
text-align: center;
color: #6b68a6;
padding: 20px;
overflow-x: hidden;
}}
a {{
color: #6b68a6;
}}
h1 {{
text-align: center;
margin: 10px 0 20px 0;
padding: 0;
}}
h2 {{
font-size: 20px;
margin: 0 0 20px 0;
padding: 0;
}}
.container {{
display: flex;
justify-content: center;
flex-direction: column;
align-items: center;
}}
.boxes {{
display: flex;
justify-content: center;
gap: 10px;
}}
.box {{
background-color: #e1d2fb;
border: 2px solid #b5b2de;
color: #6b68a6;
padding: 20px;
text-align: center;
flex-shrink: 0;
z-index: 2;
}}
.count {{
font-size: 30px;
text-align: center;
}}
.count-label {{
margin-bottom: 1em;
}}
.time {{
font-size: 18px;
}}
svg {{
width: 500px;
height: 180px;
position: relative;
top: 0px;
z-index: 1;
margin-bottom: 20px;
}}
@media screen and (max-width: 850px) {{
.boxes {{
flex-direction: column;
align-items: center;
}}
.box {{
width: 270px;
color: #8e89f1;
}}
}}
</style>
</head>
<body>
<div class="container">
<h1>Ethereum Validator Queue Status</h1>
<div class="boxes">
<div class="box">
<h2>Pending Activations</h2>
<div class="count">{beacon_entering}</div>
<div class="count-label">validators</div>
<div class="time-label">Estimated wait time:</div>
<div class="time">{entry_waiting_time}</div>
</div>
<div class="box">
<h2>Active validators</h2>
<div class="count">{active_validators}</div>
<div class="count-label">validators</div>
</div>
<div class="box">
<h2>Pending Withdrawals</h2>
<div class="count">{beacon_exiting}</div>
<div class="count-label">validators</div>
<div class="time-label">Estimated wait time:</div>
<div class="time">{exit_waiting_time}</div>
</div>
</div>
<svg>
<linearGradient id="g1" x1="100%" y1="100%" x2="100%" y2="0%">
<stop stop-color="#E1D2FB" stop-opacity="1" offset="0"/>
<stop stop-color="#E1D2FB" stop-opacity="0" offset="0.75"/>
</linearGradient>
<linearGradient id="g2" x1="0%" y1="50%" x2="100%" y2="50%">
<stop stop-color="#a7bfbd" offset="0"/>
<stop stop-color="#4c7471" offset="0.5"/>
<stop stop-color="#a7bfbd" offset="1"/>
</linearGradient>
<linearGradient id="g3" x1="100%" y1="100%" x2="100%" y2="0%">
<stop stop-color="#ae92db" offset="0"/>
<stop stop-color="#E1D2FB" offset="1"/>
</linearGradient>
<rect x="160" y="120" width="180" height="10" stroke="#4c7471" fill="url(#g2)" />
<rect x="210" y="130" width="10" height="40" fill="#a7bfbd" />
<rect x="280" y="130" width="10" height="40" fill="#a7bfbd" />
<rect x="200" y="165" width="100" height="10" stroke="#4c7471" fill="#a7bfbd" />
<rect x="220" y="170" width="60" height="8" stroke="#444" fill="#666" />
<rect x="223" y="172" width="6" height="4" fill="#a3f5f9" />
<path d="m -6 16 L -51 -18 a 100 100 0 0 1 101 0 l -44 34 z" fill="url(#g1)" transform="translate(250 100) scale(4)" />
<polygon points="0 -40, 30 0, 0 40, -30 0" fill="url(#g3)" stroke="#9391b6" stroke-width="2" transform="translate(230 110) scale(0.25)"/>
<polygon points="0 -60, 30 0, 0 90, -30 0" fill="url(#g3)" stroke="#9391b6" stroke-width="2" transform="translate(250 115) scale(0.35)"/>
<polygon points="0 -40, 30 0, 0 40, -30 0" fill="url(#g3)" stroke="#9391b6" stroke-width="2" transform="translate(275 120) scale(0.25)"/>
<polygon points="0 -40, 30 0, 0 40, -30 0" fill="url(#g3)" stroke="#9391b6" stroke-width="2" transform="translate(235 130) scale(0.2)"/>
<polygon points="0 -40, 30 0, 0 40, -30 0" fill="url(#g3)" stroke="#9391b6" stroke-width="2" transform="translate(265 105) scale(0.2)"/>
</svg>
<footer>
<p>Made with 💜 for waiting in line (so long as I'm in it with you) by <a href="https://twitter.com/MikeSylphDapps" target="_blank" rel="noreferrer">mike.sylphdapps.eth</a>.</p>
<p>Forked from gonlad-x's <a href="https://validator-queue-monitoring.vercel.app/" target="_blank" rel="noreferrer">validator-queue-monitoring</a>.</p>
<p>You can see my other work at <a href="https://sylphdapps.com/" target="_blank" rel="noreferrer">Sylph Dapps</a>.</p>
</footer>
</div>
</body>
</html>"""
with open("index.html", "w") as f:
f.write(html_content)
entry_waiting_time_days, entry_waiting_time_hours, entry_waiting_time_minutes, entry_waiting_time_seconds, beacon_entering, active_validators = estimate_entry_waiting_time()
exit_waiting_time_days, exit_waiting_time_hours, exit_waiting_time_minutes, exit_waiting_time_seconds, beacon_exiting, active_validators = estimate_exit_waiting_time()
generate_html(entry_waiting_time_days, entry_waiting_time_hours, entry_waiting_time_minutes, beacon_entering, exit_waiting_time_days, exit_waiting_time_hours, exit_waiting_time_minutes, beacon_exiting, active_validators)