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[READ-ONLY] Mirror of https://github.com/openstatusHQ/openstatus. 🫖 Status page with uptime monitoring & API monitoring as code 🫖 openstatus.dev
bun drizzle-orm monitoring monitoring-as-code nextjs observability on-call open-source shadcn-ui status-page statuspage synthetic-monitoring tinybird turso uptime uptime-checker uptime-monitor
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3.5 kB · 98 lines
TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899import type { SeverityLevel, StatusType } from "./types";
/** * Check if a URL's hostname equals or is a subdomain of the given domain. * Uses proper hostname parsing to prevent substring spoofing attacks * (e.g. "evil.com/statuspage.io" or "statuspage.io.evil.com"). */export function urlHostnameEndsWith(url: string, domain: string): boolean { try { const { hostname } = new URL(url); return hostname === domain || hostname.endsWith(`.${domain}`); } catch { return false; }}
/** * Infer normalized status type from free-text description and severity level * * This function maps diverse status messages from different providers into a * standardized set of status types. It uses keyword matching with priority ordering * to ensure consistent classification. * * **Detection Priority** (highest to lowest): * 1. **Incident workflow** - investigating, identified, monitoring, resolved * 2. **Maintenance** - scheduled or emergency maintenance * 3. **Specific outages** - major outage, partial outage * 4. **General down state** - with word boundary detection to avoid false matches * 5. **Degraded performance** - degraded, performance issues * 6. **Severity fallback** - when no keywords match, use severity level * * @param description - Free-text status description (e.g., "Investigating database issues") * @param severity - Impact level: none, minor, major, or critical * @returns Normalized status type * * @example * ```typescript * inferStatus("Investigating API errors", "major") * // => "investigating" * * inferStatus("Service degraded", "minor") * // => "degraded" * * inferStatus("All Systems Operational", "none") * // => "operational" * * inferStatus("Scheduled maintenance in progress", "none") * // => "under_maintenance" * ``` */export function inferStatus( description: string, severity: SeverityLevel,): StatusType { const lower = description.toLowerCase();
// Incident workflow states (highest priority - specific states) if (lower.includes("investigating")) return "investigating"; if (lower.includes("identified")) return "identified"; if (lower.includes("monitoring")) return "monitoring"; if (lower.includes("resolved")) return "resolved";
// Maintenance (high priority - planned work) if (lower.includes("maintenance")) return "under_maintenance";
// Specific outage types (check specific before general) if (lower.includes("major outage") || lower.includes("complete outage")) { return "major_outage"; } if (lower.includes("partial outage") || lower.includes("partial system")) { return "partial_outage"; }
// General down state (use word boundaries to avoid false matches) // Matches: "is down", "are down", "service down", but not "countdown" if (/\b(is|are|service|system|services|systems)\s+down\b/.test(lower)) { return "major_outage"; } // Also match standalone "down" at end of sentence or after punctuation if (/(\s|^)down(\s|[.,!?]|$)/.test(lower)) { return "major_outage"; }
// Degraded/performance (lower priority) if (lower.includes("degraded") || lower.includes("performance")) { return "degraded"; }
// Operational (default for severity: "none") if (severity === "none") return "operational";
// Fallback based on severity if (severity === "critical") return "major_outage"; if (severity === "major") return "major_outage"; if (severity === "minor") return "degraded";
return "operational";}