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before design refactor

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This commit is contained in:
Tanishq Dubey
2025-10-22 21:31:54 -04:00
parent 8bce752a19
commit 892cc24881
2 changed files with 243 additions and 50 deletions
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2
frontend/Dockerfile
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@ -2,7 +2,7 @@
FROM python:3.10-slim
# Install Python dependencies
RUN pip install Flask requests tabulate
RUN pip install Flask requests tabulate qrcode
WORKDIR /app/static
RUN mkdir fonts

261
frontend/main.py
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@ -2,7 +2,11 @@ import os
import requests
import subprocess
import json
from flask import Flask, render_template_string, jsonify
import zlib
import base64
import qrcode
from io import StringIO
from flask import Flask, render_template_string, jsonify, request
from socket import gethostbyname_ex
from datetime import datetime
from tabulate import tabulate # For ASCII tables
@ -13,6 +17,7 @@ app = Flask(__name__)
# Config
REPORTER_SERVICE = os.environ.get("REPORTER_SERVICE", "ntp-reporter-svc.default.svc.cluster.local")
BASE_URL = os.environ.get("BASE_URL", "https://time.dws.rip")
# Tracking table config
TRACKING_METRICS_ORDER = [
@ -31,6 +36,36 @@ SOURCES_COLUMNS_ORDER = [
# Define widths for sources table columns
SOURCES_COL_WIDTHS = [24, 10, 32, 10, 7, 7, 8, 15, 10]
# Metric Definitions
TRACKING_METRICS_DEFS = {
"Reference ID": "Identifier of current time source (IP or refclock ID)",
"Ref Source IP": "IP address of the reference time source",
"Stratum": "Distance from primary time source (lower is better, 1-16)",
"Ref time (UTC)": "Last time the reference was updated",
"System time": "Offset between system clock and reference time (seconds)",
"Last offset": "Offset of last clock update (seconds)",
"RMS offset": "Root mean square of recent offset values (long-term average)",
"Frequency": "Rate of system clock drift (ppm - parts per million)",
"Residual freq": "Residual frequency error not yet corrected",
"Skew": "Estimated error bound of frequency (accuracy metric)",
"Root delay": "Total network delay to stratum-1 server (seconds)",
"Root dispersion": "Total dispersion accumulated to stratum-1 server",
"Update interval": "Time between clock updates (seconds)",
"Leap status": "Leap second indicator (Normal, Insert, Delete, or Not synced)"
}
SOURCES_METRICS_DEFS = {
"DWS PEER": "Node identifier for this NTP daemon instance",
"ModeState": "Source mode (^=server, ==peer) & state (*=current sync)",
"Name/IP address": "Hostname or IP address of the NTP source",
"Stratum": "Stratum level of the source (1=primary reference)",
"Poll": "Polling interval to source (log2 seconds, e.g., 6 = 64s)",
"Reach": "Reachability register (377 octal = all 8 recent polls OK)",
"LastRx": "Time since last successful response from source",
"Last sample": "Offset measurement from last valid sample (seconds)",
"Std Dev": "Standard deviation of offset (jitter measurement)"
}
#
# HTML Template - Radically simplified for TUI output
#
@ -99,10 +134,6 @@ HTML_TEMPLATE = """<!DOCTYPE html>
</head>
<body>
<pre>
$> ./dws_ntp_report
<b>**INFO**</b>: INITIALIZING DWS NTP MONITORING SYSTEM
<b>**INFO**</b>: COLLECTING DWS NTP POOL INFORMATION
{{ report_header }}
<b>SECTION 1: CURRENT TIME SYNCHRONIZATION</b>
@ -116,7 +147,6 @@ CLOCK OFFSET: <span id="clock-offset">---</span>
<b>SECTION 2: NODE TRACKING STATUS METRICS</b>
════════════════════════════════════════════════════════════════════════════════
<b>**INFO**</b>: COLLECTING TRACKING STATUS METRICS FROM ALL NODES
{{ tracking_table_ascii }}
@ -125,24 +155,35 @@ CLOCK OFFSET: <span id="clock-offset">---</span>
<b>SECTION 3: UPSTREAM NTP SOURCES</b>
════════════════════════════════════════════════════════════════════════════════
<b>**INFO**</b>: COLLECTING UPSTREAM SOURCES METRICS FROM ALL NODES
{{ sources_table_ascii }}
════════════════════════════════════════════════════════════════════════════════
<b>SECTION 4: DEVELOPER INFORMATION</b>
<b>SECTION 4: METRIC DEFINITIONS & DEVELOPER INFORMATION</b>
════════════════════════════════════════════════════════════════════════════════
<b>TRACKING METRICS GLOSSARY:</b>
{{ tracking_glossary }}
<b>SOURCES METRICS GLOSSARY:</b>
{{ sources_glossary }}
<b>USAGE INFORMATION:</b>
USE DWS AS YOUR NTP POOL BY SETTING time.dws.rip AS YOUR NTP SOURCE
<b>**INFO**</b>: DWS LLC // "IT'S YOUR INTERNET, TAKE IT BACK" // https://dws.rip
<b>**INFO**</b>: DWS LLC // UNITED STATES OF AMERICA // 2025
DWS LLC // "IT'S YOUR INTERNET, TAKE IT BACK" // https://dws.rip
DWS LLC // UNITED STATES OF AMERICA // 2025
<b>REPORT SNAPSHOT:</b>
Scan the QR code below to access this exact report state:
<span style="font-size: 4px; line-height: 4px;">{{ report_qr_code }}</span>
════════════════════════════════════════════════════════════════════════════════
<b>**INFO**</b>: REPORT GENERATION COMPLETE {{ gen_time_utc }}
<b>**INFO**</b>: END OF REPORT
REPORT GENERATION COMPLETE {{ gen_time_utc }}
END OF REPORT
════════════════════════════════════════════════════════════════════════════════
</pre>
@ -151,6 +192,7 @@ USE DWS AS YOUR NTP POOL BY SETTING time.dws.rip AS YOUR NTP SOURCE
const clockDateSpan = document.getElementById('clock-date');
const clockStatusSpan = document.getElementById('clock-status');
const clockOffsetSpan = document.getElementById('clock-offset');
const isHistorical = {{ 'true' if is_historical else 'false' }};
let serverTimeOffsetMs = null; // Offset between client and DWS server in milliseconds
let clockUpdateInterval = null;
let syncInterval = null;
@ -224,10 +266,43 @@ USE DWS AS YOUR NTP POOL BY SETTING time.dws.rip AS YOUR NTP SOURCE
}
}
// Start the sync process when the page loads & repeat
function displayHistoricalTime(timestampStr) {
// Parse the ISO timestamp and display it statically
try {
const timestamp = new Date(timestampStr);
const hours = String(timestamp.getUTCHours()).padStart(2, '0');
const minutes = String(timestamp.getUTCMinutes()).padStart(2, '0');
const seconds = String(timestamp.getUTCSeconds()).padStart(2, '0');
const timeString = `${hours}:${minutes}:${seconds}`;
const dateString = timestamp.toLocaleDateString('en-US', {
weekday: 'long', year: 'numeric', month: 'long', day: 'numeric', timeZone: 'UTC'
}) + " (UTC)";
clockTimeSpan.textContent = timeString;
clockDateSpan.textContent = dateString;
clockStatusSpan.textContent = "Historical Snapshot";
clockOffsetSpan.textContent = "N/A";
} catch (error) {
console.error('Error parsing historical timestamp:', error);
clockTimeSpan.textContent = timestampStr;
clockDateSpan.textContent = "Historical";
clockStatusSpan.textContent = "Snapshot";
clockOffsetSpan.textContent = "N/A";
}
}
// Start the sync process when the page loads & repeat (only for live reports)
document.addEventListener('DOMContentLoaded', () => {
if (isHistorical) {
// For historical reports, display static timestamp
displayHistoricalTime("{{ gen_time_utc }}");
} else {
// For live reports, sync clock in real-time
syncClockAndOffset();
syncInterval = setInterval(syncClockAndOffset, 60 * 1000); // Resync every 60 seconds
}
});
</script>
</body>
@ -243,7 +318,7 @@ def report_header(report_id, timestamp):
"""Generate a vintage-style report header."""
header = []
header.append(form_feed_separator(80))
header.append(f"REPORT ID: {report_id}".ljust(40) + f"GENERATED: {timestamp}".rjust(40))
header.append(f"GENERATED: {timestamp}".center(80))
header.append(form_feed_separator(80))
return "\n".join(header)
@ -274,6 +349,65 @@ def format_float(value_str, precision=3):
except:
return value_str # Return original if not a float
# --- Report ID Encoding/Decoding ---
def encode_state(fragments):
"""Encode NTP state into a URL-safe base64 compressed report ID."""
try:
# Create minimal state representation
state = {
"timestamp": datetime.utcnow().isoformat() + "Z",
"fragments": fragments
}
# Convert to JSON, compress with zlib, then base64 encode
json_str = json.dumps(state, separators=(',', ':')) # Compact JSON
compressed = zlib.compress(json_str.encode('utf-8'), level=9)
encoded = base64.urlsafe_b64encode(compressed).decode('ascii')
return encoded
except Exception as e:
print(f"Error encoding state: {e}")
return None
def decode_state(report_id):
"""Decode a report ID back into NTP state fragments."""
try:
# Base64 decode, decompress, parse JSON
compressed = base64.urlsafe_b64decode(report_id.encode('ascii'))
json_str = zlib.decompress(compressed).decode('utf-8')
state = json.loads(json_str)
return state.get("fragments", []), state.get("timestamp")
except Exception as e:
print(f"Error decoding state: {e}")
return None, None
def generate_qr_code_ascii(url):
"""Generate ASCII QR code for the given URL."""
try:
qr = qrcode.QRCode(
version=1, # Small version, will auto-increase if needed
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=1,
border=2,
)
qr.add_data(url)
qr.make(fit=True)
# Get the QR code matrix
matrix = qr.get_matrix()
# Convert to ASCII art using block characters
ascii_qr = []
for row in matrix:
line = ""
for cell in row:
# Use full block for black, space for white
line += "██" if cell else " "
ascii_qr.append(line)
return "\n".join(ascii_qr)
except Exception as e:
print(f"Error generating QR code: {e}")
return f"[QR Code generation failed: {e}]"
@app.route('/api/time')
def get_server_time():
return jsonify({"time_utc": datetime.utcnow().isoformat() + "Z"})
@ -301,27 +435,26 @@ def format_value(value, max_len=25):
return s_val[:max_len-3] + "..."
return s_val
@app.route('/')
def homepage():
fragments = []
def format_glossary(metrics_defs):
"""Format metric definitions as terminal-style glossary."""
lines = []
for metric, definition in metrics_defs.items():
lines.append(f" {metric.ljust(20)} - {definition}")
return "\n".join(lines)
def render_report(fragments, report_id, gen_time, is_historical=False):
"""Render NTP report from fragments data."""
error_msg = "No errors."
meta_offset_ms = "N/A"
meta_leap_status = "Unknown"
ips = get_reporter_ips(REPORTER_SERVICE)
if not ips: error_msg = f"Could not resolve IPs for service '{REPORTER_SERVICE}'."
# 1. Fetch fragments
for ip in ips:
try:
res = requests.get(f"http://{ip}:9898/fragment.json", timeout=2)
if res.status_code == 200: fragments.append(res.json())
else: print(f"Failed fetch from {ip}: Status {res.status_code}")
except Exception as e: print(f"Failed connect to {ip}: {e}"); error_msg = str(e)
fragments.sort(key=lambda x: x.get("node_id", "z"))
nodes_list = [f.get("node_id", "unknown") for f in fragments]
# 2. Generate ASCII Tracking Table with tabulate
# Generate QR code for the report URL
report_url = f"{BASE_URL}/report/{report_id}"
report_qr_code = generate_qr_code_ascii(report_url)
# Generate ASCII Tracking Table with tabulate
tracking_rows = []
for metric in TRACKING_METRICS_ORDER:
row = [metric]
@ -354,7 +487,7 @@ def homepage():
total_offset_seconds = 0.0
valid_offset_count = 0
leap_statuses = set()
# 3. Generate Meta Description Summary (using the first node's data)
# Generate Meta Description Summary
if fragments:
for frag in fragments:
tracking = frag.get("tracking", {})
@ -383,7 +516,7 @@ def homepage():
meta_leap_status = "Mixed"
# else remains "Unknown" if no valid status found
# 3. Generate ASCII Sources Table with tabulate
# Generate ASCII Sources Table with tabulate
if not fragments:
sources_table_ascii = "ERROR: Could not fetch data from any reporter pods."
else:
@ -426,21 +559,81 @@ def homepage():
numalign="right"
)
gen_time = subprocess.run(["date", "-u", "+%Y-%m-%dT%H:%M:%SZ"], capture_output=True, text=True).stdout.strip()
# Generate report header
report_id = str(uuid.uuid4())[:8].upper()
report_header_text = report_header(report_id, gen_time)
# Format glossaries
tracking_glossary = format_glossary(TRACKING_METRICS_DEFS)
sources_glossary = format_glossary(SOURCES_METRICS_DEFS)
return render_template_string(
HTML_TEMPLATE,
gen_time_utc=gen_time,
report_header=report_header_text,
tracking_table_ascii=tracking_table_ascii,
sources_table_ascii=sources_table_ascii,
tracking_glossary=tracking_glossary,
sources_glossary=sources_glossary,
report_qr_code=report_qr_code,
is_historical=is_historical,
meta_description=f"DWS NTP Pool: {meta_leap_status}. Avg Offset: {meta_offset_ms}.",
error=error_msg
)
@app.route('/')
def homepage():
"""Live NTP status - fetches current data from all nodes."""
fragments = []
ips = get_reporter_ips(REPORTER_SERVICE)
# Fetch fragments from all reporter pods
for ip in ips:
try:
res = requests.get(f"http://{ip}:9898/fragment.json", timeout=2)
if res.status_code == 200:
fragments.append(res.json())
else:
print(f"Failed fetch from {ip}: Status {res.status_code}")
except Exception as e:
print(f"Failed connect to {ip}: {e}")
fragments.sort(key=lambda x: x.get("node_id", "z"))
# Generate timestamp and report ID
gen_time = subprocess.run(["date", "-u", "+%Y-%m-%dT%H:%M:%SZ"], capture_output=True, text=True).stdout.strip()
# Create encoded report ID from current state
report_id = encode_state(fragments)
if not report_id:
report_id = str(uuid.uuid4())[:8].upper() # Fallback to random ID
return render_report(fragments, report_id, gen_time)
@app.route('/report/<report_id>')
def historical_report(report_id):
"""Display historical NTP report from encoded report ID."""
fragments, timestamp = decode_state(report_id)
if fragments is None:
return render_template_string("""
<!DOCTYPE html>
<html><head><title>Invalid Report ID</title></head>
<body style="background: #000; color: #FFBF00; font-family: monospace; padding: 2em;">
<pre>
ERROR: INVALID REPORT ID
The report ID you provided could not be decoded.
Please check the URL and try again.
<a href="/" style="color: #FFFF00;">Return to live status</a>
</pre>
</body></html>
"""), 400
# Use the timestamp from the encoded state, or fallback to "HISTORICAL"
gen_time = timestamp if timestamp else "HISTORICAL"
return render_report(fragments, report_id, gen_time, is_historical=True)
if __name__ == '__main__':
app.run(host='0.0.0.0', port=8080)