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_helper.ts
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_helper.ts
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import { once } from "events";
import path from "path";
import os from "os";
import fs from "fs";
import chalk from "chalk";
import "should";
import {
assert,
ErrorCallback,
makeApplicationUrn,
makeSubject,
OPCUABaseServer,
OPCUACertificateManager,
OPCUADiscoveryServer,
OPCUAServer,
RegisterServerMethod
} from "node-opcua";
import { make_debugLog, checkDebugFlag } from "node-opcua-debug";
import { createServerCertificateManager } from "../../test_helpers/createServerCertificateManager";
const debugLog = make_debugLog("TEST");
const doDebug = checkDebugFlag("TEST");
const configFolder = path.join(__dirname, "../../tmp");
export async function pause(ms: number) {
await new Promise((resolve) => setTimeout(resolve, ms));
}
/**
*
* @param discoveryEndpointUrl
* @param port
* @param name
*/
export async function createAndStartServer(discoveryEndpointUrl: string, port: number, name: string): Promise<OPCUAServer> {
const server = await createServerThatRegistersItselfToTheDiscoveryServer(discoveryEndpointUrl, port, name);
/* no await here on purpose */ server.start();
// server registration takes place in parallel and should be checked independently
await once(server, "serverRegistered");
await pause(100);
return server;
}
export async function createServerThatRegistersItselfToTheDiscoveryServer(
discoveryServerEndpointUrl: string,
port: number,
name: string
): Promise<OPCUAServer> {
const serverCertificateManager = await createServerCertificateManager(port);
const certificateFile = path.join(serverCertificateManager.rootDir, "certificate_server" + name + ".pem");
assert(!name.match(/urn:/));
const applicationName = name;
const applicationUri = makeApplicationUrn(os.hostname(), name);
if (!fs.existsSync(certificateFile)) {
await serverCertificateManager.createSelfSignedCertificate({
applicationUri,
dns: [os.hostname(), "localhost"],
// dns: argv.alternateHostname ? [argv.alternateHostname, fqdn] : [fqdn],
// ip: await getIpAddresses(),
outputFile: certificateFile,
subject: makeSubject(applicationName, os.hostname()),
startDate: new Date(),
validity: 365 * 10
});
}
const server = new OPCUAServer({
port,
serverInfo: {
applicationName,
applicationUri,
productUri: "LDS-" + name
},
discoveryServerEndpointUrl,
registerServerMethod: RegisterServerMethod.LDS,
certificateFile,
serverCertificateManager,
});
server.discoveryServerEndpointUrl.should.eql(discoveryServerEndpointUrl);
server.on("serverRegistrationPending", () => {
debugLog("on serverRegistrationPending event received on server " + server.getEndpointUrl());
});
server.on("serverRegistered", () => {
debugLog("on serverRegistered event received on server " + server.getEndpointUrl());
});
server.on("serverRegistrationRenewed", () => {
debugLog("on serverRegistrationRenewed event received on server " + server.getEndpointUrl());
});
server.on("serverUnregistered", () => {
debugLog("on serverUnregistered event received on server " + server.getEndpointUrl());
});
return server;
}
export function ep(server: OPCUABaseServer) {
const endpointUri = server.getEndpointUrl();
return endpointUri;
}
export async function createDiscovery(port: number): Promise<OPCUADiscoveryServer> {
assert(typeof port === "number", "expecting a port number");
const serverCertificateManager = await createServerCertificateManager(port)
const privateKeyFile = serverCertificateManager.privateKey;
const certificateFile = path.join(serverCertificateManager.rootDir, "certificate_discovery_server.pem");
const applicationUri = "urn:localhost:LDS-" + port;
if (!fs.existsSync(certificateFile)) {
await serverCertificateManager.createSelfSignedCertificate({
applicationUri,
dns: [os.hostname(), "localhost"],
// dns: argv.alternateHostname ? [argv.alternateHostname, fqdn] : [fqdn],
// ip: await getIpAddresses(),
outputFile: certificateFile,
subject: "/CN=Sterfive/DC=NodeOPCUA-LocalDiscoveryServer",
startDate: new Date(),
validity: 365 * 10
});
}
const discoveryServer = new OPCUADiscoveryServer({
port,
serverInfo: {
applicationUri,
productUri: "LDS-" + port
},
certificateFile,
serverCertificateManager
});
return discoveryServer;
}
export async function startDiscovery(port: number): Promise<OPCUADiscoveryServer> {
const discoveryServer = await createDiscovery(port);
await discoveryServer.start();
return discoveryServer;
}
const doTrace = doDebug || process.env.TRACE;
export type FF = (callback: ErrorCallback) => void;
// add the tcp/ip endpoint with no security
export function f(func: FF): FF {
const title = func.name
.replace(/_/g, " ")
.replace(/^bound /,"")
.replace("given ", chalk.green("**GIVEN** "))
.replace("when ", chalk.green("**WHEN** "))
.replace("then ", chalk.green("**THEN** "));
const ff = function (callback: ErrorCallback) {
if (doTrace) {
// tslint:disable-next-line: no-console
console.log(" * " + title);
}
func((err?: Error | null) => {
if (doDebug) {
// tslint:disable-next-line: no-console
console.log(" ! " + title);
}
callback(err!);
});
};
return ff;
}
export async function fa(title: string, func: () => Promise<void>): Promise<void> {
title= title
.replace(/_/g, " ")
.replace(/^bound /,"")
.replace("given ", chalk.green("**GIVEN** "))
.replace("when ", chalk.green("**WHEN** "))
.replace("then ", chalk.green("**THEN** "));
const ff = async () => {
if (doTrace) {
// tslint:disable-next-line: no-console
console.log(" * " + title);
}
await func();
if (doDebug) {
// tslint:disable-next-line: no-console
console.log(" ! " + title);
}
};
await ff();
}