447 lines
19 KiB
Python
447 lines
19 KiB
Python
import os
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import requests
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import subprocess
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import json
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from flask import Flask, render_template_string, jsonify
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from socket import gethostbyname_ex
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from datetime import datetime
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from tabulate import tabulate # For ASCII tables
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import time # For timestamp conversion
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import uuid # For report IDs
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app = Flask(__name__)
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# Config
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REPORTER_SERVICE = os.environ.get("REPORTER_SERVICE", "ntp-reporter-svc.default.svc.cluster.local")
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# Tracking table config
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TRACKING_METRICS_ORDER = [
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"Reference ID", "Ref Source IP", "Stratum", "Ref time (UTC)", "System time",
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"Last offset", "RMS offset", "Frequency", "Residual freq", "Skew",
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"Root delay", "Root dispersion", "Update interval", "Leap status"
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]
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# Define max widths for tracking table columns (approximate)
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TRACKING_COL_WIDTHS = [18] + [24] * 3 # Metric Name + 3 Nodes
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# Sources table config
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SOURCES_COLUMNS_ORDER = [
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"DWS PEER", "ModeState", "Name/IP address", "Stratum", "Poll", "Reach",
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"LastRx", "Last sample", "Std Dev"
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]
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# Define widths for sources table columns
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SOURCES_COL_WIDTHS = [24, 10, 32, 10, 7, 7, 8, 15, 10]
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#
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# HTML Template - Radically simplified for TUI output
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#
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HTML_TEMPLATE = """<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>DWS LLC NTP STATUS</title>
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<link href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400&display=swap" rel="stylesheet">
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<style>
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body {
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background-color: #000;
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color: #FFBF00; /* Amber */
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font-size: 14px; /* Slightly smaller for density */
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margin: 0;
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padding: 1em;
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overflow-x: auto; /* Allow horizontal scroll if needed */
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}
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pre {
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margin: 0;
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padding: 0;
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white-space: pre; /* Render exactly as text */
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line-height: 1.3; /* Adjust spacing slightly */
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}
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b { /* Style for **INFO** */
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font-weight: normal; /* Monospace fonts often look bold already */
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color: #FFFF00; /* Yellow for INFO */
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}
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/* Spans for the dynamic clock parts */
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#clock-time, #clock-date, #clock-status, #clock-offset {
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color: #FFFFFF; /* White for clock details */
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}
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#clock-time {
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font-weight: bold;
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}
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@font-face {
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font-family: 'BerkeleyMono';
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src: url('/static/fonts/BerkeleyMono-Regular.woff2') format('woff2');
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font-weight: 400;
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font-style: normal;
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}
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@font-face {
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font-family: 'BerkeleyMono';
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src: url('/static/fonts/BerkeleyMono-Bold.woff2') format('woff2');
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font-weight: 700;
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font-style: normal;
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}
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@font-face {
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font-family: 'BerkeleyMono';
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src: url('/static/fonts/BerkeleyMono-Oblique.woff2') format('woff2');
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font-weight: 400;
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font-style: italic;
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}
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@font-face {
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font-family: 'BerkeleyMono';
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src: url('/static/fonts/BerkeleyMono-Bold-Oblique.woff2') format('woff2');
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font-weight: 700;
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font-style: italic;
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}
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body, pre {
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font-family: 'BerkeleyMono', monospace;
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}
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</style>
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<meta name="description" content="{{ meta_description }}">
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</head>
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<body>
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<pre>
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$> ./dws_ntp_report
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<b>**INFO**</b>: INITIALIZING DWS NTP MONITORING SYSTEM
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<b>**INFO**</b>: COLLECTING DWS NTP POOL INFORMATION
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{{ report_header }}
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<b>SECTION 1: CURRENT TIME SYNCHRONIZATION</b>
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════════════════════════════════════════════════════════════════════════════════
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TIME: <span id="clock-time">--:--:--</span>
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DATE: <span id="clock-date">----------</span>
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STATUS: <span id="clock-status">Syncing...</span>
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CLOCK OFFSET: <span id="clock-offset">---</span>
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════════════════════════════════════════════════════════════════════════════════
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<b>SECTION 2: NODE TRACKING STATUS METRICS</b>
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════════════════════════════════════════════════════════════════════════════════
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<b>**INFO**</b>: COLLECTING TRACKING STATUS METRICS FROM ALL NODES
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{{ tracking_table_ascii }}
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════════════════════════════════════════════════════════════════════════════════
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<b>SECTION 3: UPSTREAM NTP SOURCES</b>
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════════════════════════════════════════════════════════════════════════════════
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<b>**INFO**</b>: COLLECTING UPSTREAM SOURCES METRICS FROM ALL NODES
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{{ sources_table_ascii }}
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════════════════════════════════════════════════════════════════════════════════
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<b>SECTION 4: DEVELOPER INFORMATION</b>
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════════════════════════════════════════════════════════════════════════════════
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USE DWS AS YOUR NTP POOL BY SETTING time.dws.rip AS YOUR NTP SOURCE
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<b>**INFO**</b>: DWS LLC // "IT'S YOUR INTERNET, TAKE IT BACK" // https://dws.rip
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<b>**INFO**</b>: DWS LLC // UNITED STATES OF AMERICA // 2025
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════════════════════════════════════════════════════════════════════════════════
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<b>**INFO**</b>: REPORT GENERATION COMPLETE {{ gen_time_utc }}
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<b>**INFO**</b>: END OF REPORT
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════════════════════════════════════════════════════════════════════════════════
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</pre>
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<script>
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const clockTimeSpan = document.getElementById('clock-time');
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const clockDateSpan = document.getElementById('clock-date');
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const clockStatusSpan = document.getElementById('clock-status');
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const clockOffsetSpan = document.getElementById('clock-offset');
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let serverTimeOffsetMs = null; // Offset between client and DWS server in milliseconds
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let clockUpdateInterval = null;
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let syncInterval = null;
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function updateClock() {
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if (serverTimeOffsetMs === null) return;
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// Apply offset to client's current time to get DWS server time
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const now = new Date(new Date().getTime() + serverTimeOffsetMs);
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// Format time and date exactly as requested
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const hours = String(now.getUTCHours()).padStart(2, '0');
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const minutes = String(now.getUTCMinutes()).padStart(2, '0');
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const seconds = String(now.getUTCSeconds()).padStart(2, '0');
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const timeString = `${hours}:${minutes}:${seconds}`;
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const dateString = now.toLocaleDateString('en-US', {
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weekday: 'long', year: 'numeric', month: 'long', day: 'numeric', timeZone: 'UTC'
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}) + " (UTC)";
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clockTimeSpan.textContent = timeString;
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clockDateSpan.textContent = dateString;
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}
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async function syncClockAndOffset() {
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clockStatusSpan.textContent = "Syncing...";
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clockOffsetSpan.textContent = "---";
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try {
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// Fetch current time from this server
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const timeResponse = await fetch('/api/time');
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if (!timeResponse.ok) throw new Error(`Time API Error ${timeResponse.status}`);
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const timeData = await timeResponse.json();
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const serverTime = new Date(timeData.time_utc).getTime();
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const clientTime = new Date().getTime();
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serverTimeOffsetMs = serverTime - clientTime; // Recalculate offset
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// Fetch latest fragments to try and get *a* representative offset
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// This is slightly tricky as we don't know which node served this page
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// We'll just grab the first node's offset for now
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const reportResponse = await fetch('/api/fragments'); // Need a new endpoint
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if (!reportResponse.ok) throw new Error(`Fragment API Error ${reportResponse.status}`);
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const fragments = await reportResponse.json();
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let reportedOffset = "N/A";
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if (fragments && fragments.length > 0 && fragments[0].tracking && fragments[0].tracking['Last offset']) {
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// Try converting the offset string (e.g., "+0.000069149") to milliseconds
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try {
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offsetSeconds = float(fragments[0].tracking['Last offset'])
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reportedOffset = `${(offsetSeconds * 1000).toFixed(0)}ms`
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} catch (e) { /* ignore parse error */ }
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}
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clockStatusSpan.textContent = "Synced";
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// Display the offset calculated between *client* and DWS server
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clockOffsetSpan.textContent = `${serverTimeOffsetMs * -1}ms (vs your clock)`;
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// Start interval timer ONLY if it's not already running
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if (!clockUpdateInterval) {
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updateClock(); // Update immediately
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clockUpdateInterval = setInterval(updateClock, 1000);
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}
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} catch (error) {
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console.error('Error syncing time/offset:', error);
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clockStatusSpan.textContent = `Sync Error`;
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clockOffsetSpan.textContent = `---`;
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serverTimeOffsetMs = 0; // Fallback to local time
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if (!clockUpdateInterval) {
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updateClock();
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clockUpdateInterval = setInterval(updateClock, 1000);
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}
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}
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}
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// Start the sync process when the page loads & repeat
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document.addEventListener('DOMContentLoaded', () => {
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syncClockAndOffset();
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syncInterval = setInterval(syncClockAndOffset, 60 * 1000); // Resync every 60 seconds
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});
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</script>
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</body>
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</html>
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"""
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# --- US Graphics Company Style Helpers ---
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def form_feed_separator(width=80):
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"""Generate a form feed separator line like vintage computer printouts."""
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return "═" * width
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def report_header(report_id, timestamp):
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"""Generate a vintage-style report header."""
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header = []
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header.append(form_feed_separator(80))
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header.append(f"REPORT ID: {report_id}".ljust(40) + f"GENERATED: {timestamp}".rjust(40))
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header.append(form_feed_separator(80))
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return "\n".join(header)
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def section_separator(title, width=80):
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"""Generate a section separator with title."""
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return f"\n{title}\n{form_feed_separator(width)}\n"
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def get_reporter_ips(service_name):
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try: _, _, ips = gethostbyname_ex(service_name); return ips
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except Exception as e: print(f"Error resolving service IPs: {e}"); return []
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# --- NEW: Helper to convert Ref time (UTC) ---
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def format_ref_time(timestamp_str):
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try:
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# Input is like "1761142077.558355643" (Unix timestamp with fractions)
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ts = float(timestamp_str)
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dt = datetime.utcfromtimestamp(ts)
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# Format like: Wed Oct 22 14:08:24 2025 (UTC)
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return dt.strftime('%a %b %d %H:%M:%S %Y') + " (UTC)"
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except:
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return timestamp_str # Return original if conversion fails
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# --- NEW: Helper to format floats nicely ---
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def format_float(value_str, precision=3):
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try:
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f_val = float(value_str)
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return f"{f_val:.{precision}f}"
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except:
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return value_str # Return original if not a float
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@app.route('/api/time')
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def get_server_time():
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return jsonify({"time_utc": datetime.utcnow().isoformat() + "Z"})
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# --- NEW: Endpoint to just return the raw fragments ---
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# The JavaScript will use this to get the latest offset data
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@app.route('/api/fragments')
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def get_fragments_json():
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fragments = []
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ips = get_reporter_ips(REPORTER_SERVICE)
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for ip in ips:
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try:
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res = requests.get(f"http://{ip}:9898/fragment.json", timeout=1) # Shorter timeout
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if res.status_code == 200: fragments.append(res.json())
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except: pass # Ignore errors fetching fragments for this endpoint
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fragments.sort(key=lambda x: x.get("node_id", "z"))
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return jsonify(fragments)
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def format_value(value, max_len=25):
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"""Truncates long values for table display."""
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if value is None: return "N/A"
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s_val = str(value)
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if len(s_val) > max_len:
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return s_val[:max_len-3] + "..."
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return s_val
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@app.route('/')
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def homepage():
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fragments = []
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error_msg = "No errors."
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meta_offset_ms = "N/A"
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meta_leap_status = "Unknown"
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ips = get_reporter_ips(REPORTER_SERVICE)
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if not ips: error_msg = f"Could not resolve IPs for service '{REPORTER_SERVICE}'."
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# 1. Fetch fragments
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for ip in ips:
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try:
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res = requests.get(f"http://{ip}:9898/fragment.json", timeout=2)
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if res.status_code == 200: fragments.append(res.json())
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else: print(f"Failed fetch from {ip}: Status {res.status_code}")
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except Exception as e: print(f"Failed connect to {ip}: {e}"); error_msg = str(e)
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fragments.sort(key=lambda x: x.get("node_id", "z"))
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nodes_list = [f.get("node_id", "unknown") for f in fragments]
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# 2. Generate ASCII Tracking Table with tabulate
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tracking_rows = []
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for metric in TRACKING_METRICS_ORDER:
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row = [metric]
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for node_id in nodes_list:
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node_data = next((f for f in fragments if f.get("node_id") == node_id), None)
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value = "N/A"
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if node_data and isinstance(node_data.get("tracking"), dict):
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raw_value = node_data["tracking"].get(metric, "N/A")
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# Format specific fields for better readability
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if metric == "Ref time (UTC)": value = format_ref_time(raw_value)
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elif metric in ["System time", "Last offset", "RMS offset", "Residual freq", "Skew", "Root delay", "Root dispersion"]: value = format_float(raw_value, 6) # Higher precision
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elif metric == "Frequency": value = format_float(raw_value, 3)
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elif metric == "Update interval": value = format_float(raw_value, 1)
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else: value = format_value(raw_value) # Use generic formatter
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row.append(value)
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tracking_rows.append(row)
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# Add summary row
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tracking_rows.append([form_feed_separator(18)] + [form_feed_separator(24)] * len(nodes_list))
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tracking_rows.append([f"TOTAL NODES: {len(nodes_list)}"] + [""] * len(nodes_list))
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tracking_table_ascii = tabulate(
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tracking_rows,
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headers=["Metric"] + nodes_list,
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tablefmt="fancy_grid",
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stralign="left",
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numalign="right"
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)
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total_offset_seconds = 0.0
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valid_offset_count = 0
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leap_statuses = set()
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# 3. Generate Meta Description Summary (using the first node's data)
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if fragments:
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for frag in fragments:
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tracking = frag.get("tracking", {})
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if isinstance(tracking, dict) and "Error" not in tracking:
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# Collect Leap Status
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leap = tracking.get("Leap status")
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if leap:
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leap_statuses.add(leap)
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# Collect Offset
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offset_str = tracking.get("Last offset", 0.1)
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try:
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offset_seconds = float(offset_str)
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total_offset_seconds += offset_seconds
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valid_offset_count += 1
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except (TypeError, ValueError):
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pass # Ignore if offset is missing or not a number
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if valid_offset_count > 0:
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avg_offset_seconds = total_offset_seconds / valid_offset_count
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meta_offset_ms = f"~{(avg_offset_seconds * 1000):.1f}ms" # Use ~ for average
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if len(leap_statuses) == 1:
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meta_leap_status = leap_statuses.pop()
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elif len(leap_statuses) > 1:
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meta_leap_status = "Mixed"
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# else remains "Unknown" if no valid status found
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# 3. Generate ASCII Sources Table with tabulate
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if not fragments:
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sources_table_ascii = "ERROR: Could not fetch data from any reporter pods."
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else:
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sources_rows = []
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node_source_counts = {}
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for f in fragments:
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node_id = f.get("node_id", "unknown")
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sources = f.get("sources", [])
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node_source_counts[node_id] = len(sources) if sources else 0
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if not sources:
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sources_rows.append([node_id, "N/A", "No sources reported", "N/A", "N/A", "N/A", "N/A", "N/A", "N/A"])
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else:
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for source in sources:
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row = [
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format_value(node_id, SOURCES_COL_WIDTHS[0]-2),
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f"{source.get('Mode', '?')}{source.get('State', '?')}",
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format_value(source.get("Name/IP address", "N/A"), SOURCES_COL_WIDTHS[2]-2),
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format_value(source.get("Stratum", "N/A")),
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format_value(source.get("Poll", "N/A")),
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format_value(source.get("Reach", "N/A")),
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format_value(source.get("LastRx", "N/A")),
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format_float(source.get("Last sample", "N/A"), 6), # Format sample offset
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format_float(source.get("Std Dev", "N/A"), 3) # Format Std Dev/Jitter
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]
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sources_rows.append(row)
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# Add summary section
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sources_rows.append([form_feed_separator(SOURCES_COL_WIDTHS[0]-2)] + [form_feed_separator(w-2) for w in SOURCES_COL_WIDTHS[1:]])
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total_sources = sum(node_source_counts.values())
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summary_text = f"TOTAL SOURCES: {total_sources} | NODES REPORTING: {len(node_source_counts)}"
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sources_rows.append([summary_text] + [""] * (len(SOURCES_COLUMNS_ORDER) - 1))
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sources_table_ascii = tabulate(
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sources_rows,
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headers=SOURCES_COLUMNS_ORDER,
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tablefmt="fancy_grid",
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stralign="left",
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numalign="right"
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)
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gen_time = subprocess.run(["date", "-u", "+%Y-%m-%dT%H:%M:%SZ"], capture_output=True, text=True).stdout.strip()
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# Generate report header
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report_id = str(uuid.uuid4())[:8].upper()
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report_header_text = report_header(report_id, gen_time)
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return render_template_string(
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HTML_TEMPLATE,
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gen_time_utc=gen_time,
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report_header=report_header_text,
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tracking_table_ascii=tracking_table_ascii,
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sources_table_ascii=sources_table_ascii,
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meta_description=f"DWS NTP Pool: {meta_leap_status}. Avg Offset: {meta_offset_ms}.",
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error=error_msg
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)
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if __name__ == '__main__':
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app.run(host='0.0.0.0', port=8080)
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