@nestjs/terminus
Version:
Terminus integration provides readiness/liveness health checks for NestJS.
105 lines • 4.51 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
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return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.HealthCheckExecutor = void 0;
const common_1 = require("@nestjs/common");
const utils_1 = require("../utils");
/**
* Takes care of the execution of health indicators.
*
* @description
* The HealthCheckExecutor is standalone, so it can be used for
* the legacy TerminusBootstrapService and the HealthCheckService.
*
* On top of that, the HealthCheckExecutor uses the `BeforeApplicationShutdown`
* hook, therefore it must implement the `beforeApplicationShutdown`
* method as public. We do not want to expose that
* to the end-user.
*
* @internal
*/
let HealthCheckExecutor = class HealthCheckExecutor {
constructor() {
this.isShuttingDown = false;
}
/**
* Executes the given health indicators.
* Implementation for v6 compatibility.
*
* @throws {Error} All errors which are not inherited by the `HealthCheckError`-class
*
* @returns the result of given health indicators
* @param healthIndicators The health indicators which should get executed
*/
execute(healthIndicators) {
return __awaiter(this, void 0, void 0, function* () {
const { results, errors } = yield this.executeHealthIndicators(healthIndicators);
return this.getResult(results, errors);
});
}
/**
* @internal
*/
beforeApplicationShutdown() {
this.isShuttingDown = true;
}
executeHealthIndicators(healthIndicators) {
return __awaiter(this, void 0, void 0, function* () {
const results = [];
const errors = [];
const result = yield Promise.allSettled(healthIndicators.map((h) => __awaiter(this, void 0, void 0, function* () { return h(); })));
result.forEach((res) => {
if (res.status === 'fulfilled') {
results.push(res.value);
}
else {
const error = res.reason;
// Is not an expected error. Throw further!
if (!(0, utils_1.isHealthCheckError)(error)) {
throw error;
}
// Is a expected health check error
errors.push(error.causes);
}
});
return { results, errors };
});
}
getSummary(results) {
return results.reduce((previous, current) => Object.assign(previous, current), {});
}
getResult(results, errors) {
const infoErrorCombined = results.concat(errors);
const info = this.getSummary(results);
const error = this.getSummary(errors);
const details = this.getSummary(infoErrorCombined);
let status = 'ok';
status = errors.length > 0 ? 'error' : status;
status = this.isShuttingDown ? 'shutting_down' : status;
return {
status,
info,
error,
details,
};
}
};
exports.HealthCheckExecutor = HealthCheckExecutor;
exports.HealthCheckExecutor = HealthCheckExecutor = __decorate([
(0, common_1.Injectable)()
], HealthCheckExecutor);
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