58 lines
2.5 KiB
TypeScript
58 lines
2.5 KiB
TypeScript
import type { CountResult } from "../types.js";
|
|
|
|
export class Metrics {
|
|
private readonly requestCounts = new Map<string, number>();
|
|
private requestDurationMs = 0;
|
|
private scanCount = 0;
|
|
private scanDurationMs = 0;
|
|
private cachedScanCount = 0;
|
|
private countedFiles = 0;
|
|
private countedLines = 0;
|
|
|
|
recordRequest(route: string, status: number, durationMs: number): void {
|
|
const key = `${route}\u0000${status}`;
|
|
this.requestCounts.set(key, (this.requestCounts.get(key) ?? 0) + 1);
|
|
this.requestDurationMs += durationMs;
|
|
}
|
|
|
|
recordScan(result: CountResult): void {
|
|
this.scanCount += 1;
|
|
this.scanDurationMs += result.durationMs;
|
|
this.cachedScanCount += Number(result.cached);
|
|
this.countedFiles += result.fileCount;
|
|
this.countedLines += result.lineCount;
|
|
}
|
|
|
|
renderPrometheus(): string {
|
|
const lines = [
|
|
"# HELP loc_via_git_http_requests_total HTTP responses by route and status.",
|
|
"# TYPE loc_via_git_http_requests_total counter"
|
|
];
|
|
for (const [key, count] of this.requestCounts) {
|
|
const [route, status] = key.split("\u0000");
|
|
lines.push(`loc_via_git_http_requests_total{route="${route}",status="${status}"} ${count}`);
|
|
}
|
|
lines.push(
|
|
"# HELP loc_via_git_http_request_duration_ms_total Total HTTP request duration in milliseconds.",
|
|
"# TYPE loc_via_git_http_request_duration_ms_total counter",
|
|
`loc_via_git_http_request_duration_ms_total ${this.requestDurationMs}`,
|
|
"# HELP loc_via_git_scans_total Completed LOC scans.",
|
|
"# TYPE loc_via_git_scans_total counter",
|
|
`loc_via_git_scans_total ${this.scanCount}`,
|
|
"# HELP loc_via_git_cached_scans_total Completed scans served from cache.",
|
|
"# TYPE loc_via_git_cached_scans_total counter",
|
|
`loc_via_git_cached_scans_total ${this.cachedScanCount}`,
|
|
"# HELP loc_via_git_scan_duration_ms_total Total scan duration in milliseconds.",
|
|
"# TYPE loc_via_git_scan_duration_ms_total counter",
|
|
`loc_via_git_scan_duration_ms_total ${this.scanDurationMs}`,
|
|
"# HELP loc_via_git_counted_files_total Files included in completed scan results.",
|
|
"# TYPE loc_via_git_counted_files_total counter",
|
|
`loc_via_git_counted_files_total ${this.countedFiles}`,
|
|
"# HELP loc_via_git_counted_lines_total Non-empty lines included in completed scan results.",
|
|
"# TYPE loc_via_git_counted_lines_total counter",
|
|
`loc_via_git_counted_lines_total ${this.countedLines}`
|
|
);
|
|
return `${lines.join("\n")}\n`;
|
|
}
|
|
}
|