container.ts
Version:
Modular application framework
252 lines • 11.5 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
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());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
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op = body.call(thisArg, _);
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __spreadArrays = (this && this.__spreadArrays) || function () {
for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
for (var r = Array(s), k = 0, i = 0; i < il; i++)
for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
r[k] = a[j];
return r;
};
Object.defineProperty(exports, "__esModule", { value: true });
var os = require("os");
var process = require("process");
var rxjs_1 = require("rxjs");
var container_1 = require("../../../container");
var error_1 = require("../../error");
var validate_1 = require("../validate");
/** Process error codes. */
var EProcessError;
(function (EProcessError) {
EProcessError["Signal"] = "ProcessError.Signal";
})(EProcessError = exports.EProcessError || (exports.EProcessError = {}));
/** Process error class. */
var ProcessError = /** @class */ (function (_super) {
__extends(ProcessError, _super);
function ProcessError(code, cause, context) {
return _super.call(this, { name: "ProcessError", value: __assign({ code: code }, context) }, cause) || this;
}
return ProcessError;
}(error_1.ErrorChain));
exports.ProcessError = ProcessError;
/** Process environment variable names. */
var EProcessEnv;
(function (EProcessEnv) {
EProcessEnv["Name"] = "PROCESS_NAME";
EProcessEnv["Version"] = "PROCESS_VERSION";
EProcessEnv["NodeEnv"] = "NODE_ENV";
})(EProcessEnv = exports.EProcessEnv || (exports.EProcessEnv = {}));
/** Process log names. */
var EProcessLog;
(function (EProcessLog) {
EProcessLog["Information"] = "Process.Information";
EProcessLog["Signal"] = "Process.Signal";
})(EProcessLog = exports.EProcessLog || (exports.EProcessLog = {}));
/** Process metric names. */
var EProcessMetric;
(function (EProcessMetric) {
EProcessMetric["UserCpuUsage"] = "Process.UserCpuUsage";
EProcessMetric["SystemCpuUsage"] = "Process.SystemCpuUsage";
EProcessMetric["RssMemoryUsage"] = "Process.RssMemoryUsage";
EProcessMetric["HeapTotalMemoryUsage"] = "Process.HeapTotalMemoryUsage";
EProcessMetric["HeapUsedMemoryUsage"] = "Process.HeapUsedMemoryUsage";
})(EProcessMetric = exports.EProcessMetric || (exports.EProcessMetric = {}));
/** Node.js process interface. */
var Process = /** @class */ (function (_super) {
__extends(Process, _super);
function Process(options) {
var _this = _super.call(this, options) || this;
_this.envVersion = validate_1.isString(_this.environment.get(EProcessEnv.Version, "1.0.0"));
_this.envNodeEnv = validate_1.isString(_this.environment.get(EProcessEnv.NodeEnv, "production"));
// Set process title.
Process.setTitle(validate_1.isString(_this.environment.get(EProcessEnv.Name, "node")));
// Process metrics on interval.
rxjs_1.interval(_this.metricInterval).subscribe(function () { return _this.processMetrics(_this.status); });
return _this;
}
Object.defineProperty(Process, "title", {
/** Get Node.js process title. */
get: function () {
return process.title || "node";
},
enumerable: true,
configurable: true
});
/** Set Node.js process title. */
Process.setTitle = function (name) {
if (name != null) {
var untypedProcess = process;
untypedProcess.title = name;
}
return Process.title;
};
Object.defineProperty(Process.prototype, "envTitle", {
get: function () {
return Process.title;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Process.prototype, "metricInterval", {
/** Override in subclass to change metric interval. */
get: function () {
return 60000;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Process.prototype, "information", {
/** Get Node.js process information. */
get: function () {
return {
name: this.container.name,
title: this.envTitle,
version: this.envVersion,
environment: this.envNodeEnv,
arch: process.arch,
platform: process.platform,
nodeVersion: process.version,
pid: process.pid,
type: os.type(),
release: os.release(),
endianness: os.endianness(),
hostname: os.hostname()
};
},
enumerable: true,
configurable: true
});
Object.defineProperty(Process.prototype, "status", {
/** Get Node.js process status. */
get: function () {
return {
uptime: process.uptime(),
cpuUsage: process.cpuUsage(),
memoryUsage: process.memoryUsage()
};
},
enumerable: true,
configurable: true
});
/** Try to read process information asset file, handle process events. */
Process.prototype.moduleUp = function () {
var _this = this;
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
return _super.prototype.moduleUp.apply(this, __spreadArrays(args, [function () { return __awaiter(_this, void 0, void 0, function () {
var _this = this;
return __generator(this, function (_a) {
// Log process information.
this.log.debug(EProcessLog.Information, this.information);
// Process end signal handlers.
process.on("SIGTERM", function () { return _this.processOnSignal("SIGTERM"); });
process.on("SIGINT", function () { return _this.processOnSignal("SIGINT"); });
return [2 /*return*/];
});
}); }]));
};
/** Kill this process with "SIGINT" signal. */
Process.prototype.kill = function () {
process.kill(process.pid, "SIGINT");
};
/** Container down when process termination signal received. */
Process.prototype.processOnSignal = function (signal) {
return __awaiter(this, void 0, void 0, function () {
var error_2;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
this.log.notice(EProcessLog.Signal, { signal: signal });
return [4 /*yield*/, this.container.down()];
case 1:
_a.sent();
this.container.destroy();
process.exit(0);
return [3 /*break*/, 3];
case 2:
error_2 = _a.sent();
// Write error to stderr and exit with error code.
error_2 = new ProcessError(EProcessError.Signal, error_2, { signal: signal });
process.stderr.write(error_2 + "\n");
this.container.destroy();
process.exit(1);
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
});
};
Process.prototype.processMetrics = function (status) {
this.metric.gauge(EProcessMetric.UserCpuUsage, status.cpuUsage.user);
this.metric.gauge(EProcessMetric.SystemCpuUsage, status.cpuUsage.system);
this.metric.gauge(EProcessMetric.RssMemoryUsage, status.memoryUsage.rss);
this.metric.gauge(EProcessMetric.HeapTotalMemoryUsage, status.memoryUsage.heapTotal);
this.metric.gauge(EProcessMetric.HeapUsedMemoryUsage, status.memoryUsage.heapUsed);
};
/** Default module name. */
Process.moduleName = "Process";
return Process;
}(container_1.Module));
exports.Process = Process;
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