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Files
DiAL/src/server/helpers.ts

93 lines
2.5 KiB
TypeScript

import type { ApiErrorResponse, CheckFailure, CheckResult, HealthResponse, RuntimeMode } from "../shared/api";
import type { StoredCheckResult } from "./checker/types";
import type { Logger } from "./logger";
import { checkerRegistry } from "./checker/runner";
import { createNoopLogger } from "./logger";
export function createApiError(error: string, status: number): ApiErrorResponse {
return { error, status };
}
export function createHeaders(mode: RuntimeMode, init: HeadersInit): Headers {
const headers = new Headers(init);
if (mode === "production") {
headers.set("X-Content-Type-Options", "nosniff");
headers.set("Referrer-Policy", "strict-origin-when-cross-origin");
}
return headers;
}
export function createHealthResponse(): HealthResponse {
return {
ok: true,
service: "dial-server",
timestamp: new Date().toISOString(),
};
}
export function formatDuration(ms: number): string {
if (ms >= 60000 && ms % 60000 === 0) return `${ms / 60000}m`;
if (ms >= 1000 && ms % 1000 === 0) return `${ms / 1000}s`;
return `${ms}ms`;
}
export function jsonResponse(
body: unknown,
options: { headers?: HeadersInit; mode: RuntimeMode; status?: number },
): Response {
const headers = createHeaders(options.mode, {
"Content-Type": "application/json; charset=utf-8",
...options.headers,
});
return new Response(JSON.stringify(body), {
headers,
status: options.status,
});
}
export function mapCheckResult(row: StoredCheckResult, type: string, logger?: Logger): CheckResult {
const log = logger ?? createNoopLogger();
let failure: CheckFailure | null = null;
if (row.failure) {
try {
failure = JSON.parse(row.failure) as CheckFailure;
} catch {
log.warn({ targetId: row.target_id, timestamp: row.timestamp }, "无法解析 failure 数据");
failure = null;
}
}
let observation: null | Record<string, unknown> = null;
if (row.observation) {
try {
observation = JSON.parse(row.observation) as Record<string, unknown>;
} catch {
log.warn({ targetId: row.target_id, timestamp: row.timestamp }, "无法解析 observation 数据");
observation = null;
}
}
let detail: null | string = null;
if (observation !== null) {
try {
const checker = checkerRegistry.get(type);
detail = checker.buildDetail(observation);
} catch {
detail = null;
}
}
return {
detail,
durationMs: row.duration_ms,
failure,
matched: row.matched === 1,
observation,
timestamp: row.timestamp,
};
}