@nestjs/terminus
Version:
Terminus integration provides readiness/liveness health checks for NestJS.
110 lines • 4.89 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 __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SequelizeHealthIndicator = void 0;
const common_1 = require("@nestjs/common");
const core_1 = require("@nestjs/core");
const utils_1 = require("../../utils");
const health_indicator_service_1 = require("../health-indicator.service");
/**
* The SequelizeHealthIndicator contains health indicators
* which are used for health checks related to Sequelize
*
* @publicApi
* @module TerminusModule
*/
let SequelizeHealthIndicator = class SequelizeHealthIndicator {
constructor(moduleRef, healthIndicatorService) {
this.moduleRef = moduleRef;
this.healthIndicatorService = healthIndicatorService;
this.checkDependantPackages();
}
/**
* Checks if the dependant packages are present
*/
checkDependantPackages() {
(0, utils_1.checkPackages)(['@nestjs/sequelize', 'sequelize'], this.constructor.name);
}
/**
* Returns the connection of the current DI context
*/
getContextConnection() {
const { getConnectionToken } =
// eslint-disable-next-line @typescript-eslint/no-var-requires
require('@nestjs/sequelize/dist/common/sequelize.utils');
try {
return this.moduleRef.get(getConnectionToken(), {
strict: false,
});
}
catch (err) {
return null;
}
}
/**
* Pings a sequelize connection
* @param connection The connection which the ping should get executed
* @param timeout The timeout how long the ping should maximum take
*
*/
pingDb(connection, timeout) {
return __awaiter(this, void 0, void 0, function* () {
const check = connection.query('SELECT 1');
return yield (0, utils_1.promiseTimeout)(timeout, check);
});
}
/**
* Checks if the Sequelize responds in (default) 1000ms and
* returns a result object corresponding to the result
*
* @param key The key which will be used for the result object
* @param options The options for the ping
* @example
* sequelizeHealthIndicator.pingCheck('database', { timeout: 1500 });
*/
pingCheck(key_1) {
return __awaiter(this, arguments, void 0, function* (key, options = {}) {
this.checkDependantPackages();
const check = this.healthIndicatorService.check(key);
const connection = options.connection || this.getContextConnection();
const timeout = options.timeout || 1000;
if (!connection) {
return check.down('Connection provider not found in application context');
}
try {
yield this.pingDb(connection, timeout);
}
catch (err) {
if (err instanceof utils_1.TimeoutError) {
return check.down(`timeout of ${timeout}ms exceeded`);
}
return check.down();
}
return check.up();
});
}
};
exports.SequelizeHealthIndicator = SequelizeHealthIndicator;
exports.SequelizeHealthIndicator = SequelizeHealthIndicator = __decorate([
(0, common_1.Injectable)({ scope: common_1.Scope.TRANSIENT }),
__metadata("design:paramtypes", [core_1.ModuleRef,
health_indicator_service_1.HealthIndicatorService])
], SequelizeHealthIndicator);
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