Question - Is there a better/right way to get the application's launch path?
Setup -
I have a console application that runs in a Linux Debian docker image. I am building the application using the --runtime linux-x64 command line switch and have all the runtime identifiers set appropriately. I was expecting the application to behave the same whether launching it by calling dotnet MyApplication.dll or ./MyApplication but they are not.
Culprit Code -
I have deployed files in a folder below the application directory that I reference so I do the following to get what I consider my launch path. I have read various articles saying this is the correct way to get what I want, and it works depending on how I launch it.
using var processModule = Process.GetCurrentProcess().MainModule;
var basePath = Path.GetDirectoryName(processModule?.FileName);
When launching this using the comand dotnet MyApplication.dll the above codes path is /usr/share/dotnet
When launching this using the command ./MyApplication.dll the path is then /app
I understand why using dotnet would be different as it is the process that is running my code, but again it was unexpected.
Any help here to what I should use given the current environment would be appreciated. Ultimately I need the path where the console application started from as gathered by the application when it starts up.
Thanks for your help.
This code should work:
public static IConfiguration LoadConfiguration()
{
var assemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
.....
}
I am running my node.js application exe file on windows 7/10 startup. It is working fine but some cases my exe stops working and is closed automatically. I want to create some scheduled job for checking whether my exe is running or not. If not running start the application and if running do nothing.
Please guide me to create this kind of schedule job with 10 minutes.
#ECHO OFF
tasklist | find /i "app.exe" && echo process Already running || START "app.exe" "path"
create batch file using above code and use task scheduler for monitoring the exe is running
Can any node.js experts tell me how I might configure node JS to autostart a server when my machine boots?
I'm on Windows
This isn't something to configure in node.js at all, this is purely OS responsibility (Windows in your case). The most reliable way to achieve this is through a Windows Service.
There's this super easy module that installs a node script as a windows service, it's called node-windows (npm, github, documentation). I've used before and worked like a charm.
var Service = require('node-windows').Service;
// Create a new service object
var svc = new Service({
name:'Hello World',
description: 'The nodejs.org example web server.',
script: 'C:\\path\\to\\helloworld.js'
});
// Listen for the "install" event, which indicates the
// process is available as a service.
svc.on('install',function(){
svc.start();
});
svc.install();
p.s.
I found the thing so useful that I built an even easier to use wrapper around it (npm, github).
Installing it:
npm install -g qckwinsvc
Installing your service:
> qckwinsvc
prompt: Service name: [name for your service]
prompt: Service description: [description for it]
prompt: Node script path: [path of your node script]
Service installed
Uninstalling your service:
> qckwinsvc --uninstall
prompt: Service name: [name of your service]
prompt: Node script path: [path of your node script]
Service stopped
Service uninstalled
If you are using Linux, macOS or Windows pm2 is your friend. It's a process manager that handle clusters very well.
You install it:
npm install -g pm2
Start a cluster of, for example, 3 processes:
pm2 start app.js -i 3
And make pm2 starts them at boot:
pm2 startup
It has an API, an even a monitor interface:
Go to github and read the instructions. It's easy to use and very handy. Best thing ever since forever.
If I'm not wrong, you can start your application using command line and thus also using a batch file. In that case it is not a very hard task to start it with Windows login.
You just create a batch file with the following content:
node C:\myapp.js
and save it with .bat extention. Here myapp.js is your app, which in this example is located in C: drive (spcify the path).
Now you can just throw the batch file in your startup folder which is located at C:\Users\%username%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
Just open it using %appdata% in run dailog box and locate to >Roaming>Microsoft>Windows>Start Menu>Programs>Startup
The batch file will be executed at login time and start your node application from cmd.
This can easily be done manually with the Windows Task Scheduler.
First, install forever.
Then, create a batch file that contains the following:
cd C:\path\to\project\root
call C:\Users\Username\AppData\Roaming\npm\forever.cmd start server.js
exit 0
Lastly, create a scheduled task that runs when you log on. This task should call the batch file.
I would recommend installing your node.js app as a Windows service, and then set the service to run at startup. That should make it a bit easier to control the startup action by using the Windows Services snapin rather than having to add or remove batch files in the Startup folder.
Another service-related question in Stackoverflow provided a couple of (apprently) really good options. Check out How to install node.js as a Windows Service. node-windows looks really promising to me. As an aside, I used similar tools for Java apps that needed to run as services. It made my life a whole lot easier. Hope this helps.
you should try this
npm forever
https://www.npmjs.com/package/forever
Use pm2 to start and run your nodejs processes on windows.
Be sure to read this github discussion of how to set up task scheduler to start pm2: https://github.com/Unitech/pm2/issues/1079
Here is another solution I wrote in C# to auto startup native node server or pm2 server on Windows.
I know there are multiple ways to achieve this as per solutions shared above. I haven't tried all of them but some third party services lack clarity around what are all tasks being run in the background. I have achieved this through a powershell script similar to the one mentioned as windows batch file. I have scheduled it using Windows Tasks Scheduler to run every minute. This has been quite efficient and transparent so far. The advantage I have here is that I am checking the process explicitly before starting it again. This wouldn't cause much overhead to the CPU on the server. Also you don't have to explicitly place the file into the startup folders.
function CheckNodeService ()
{
$node = Get-Process node -ErrorAction SilentlyContinue
if($node)
{
echo 'Node Running'
}
else
{
echo 'Node not Running'
Start-Process "C:\Program Files\nodejs\node.exe" -ArgumentList "app.js" -WorkingDirectory "E:\MyApplication"
echo 'Node started'
}
}
CheckNodeService
Simply use this, install, run and save current process list
https://www.npmjs.com/package/pm2-windows-startup
By my exp., after restart server, need to logon, in order to trigger the auto startup.
Need to create a batch file inside project folder.
Write this code in batch file
#echo off
start npm start
save batch file with myprojectname.bat
Go to run command and press window + R
Enter this command :- shell:common startup
Press ok then folder will be open.
Folder path like as C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp
You will be paste your myprojectname.bat file.
You can check also. Need to system restart.
Copied directly from this answer:
You could write a script in any language you want to automate this (even using nodejs) and then just install a shortcut to that script in the user's %appdata%\Microsoft\Windows\Start Menu\Programs\Startup folder
IntelliJ IDEA 13 has really excellent support for Mocha tests through the Node.js plugin: https://www.jetbrains.com/idea/webhelp/running-mocha-unit-tests.html
The problem is, while I edit code on my local machine, I have a VM (vagrant) in which I run and test the code, so it's as production-like as possible.
I wrote a small bash script to run my tests remotely on this VM whenever I invoke "Run" from within IntelliJ, and the results pop up in the console well enough, however I'd love to use the excellent interface that appears whenever the Mocha test runner is invoked.
Any ideas?
Update: There's a much better way to do this now. See https://github.com/TechnologyAdvice/fake-mocha
Success!!
Here's how I did it. This is specific to connecting back to vagrant, but can be tweaked for any remote server to which you have key-based SSH privileges.
Somewhere on your remote machine, or even within your codebase, store the NodeJS plugin's mocha reporter (6 .js files at the time of this writing). These are found in NodeJS/js/mocha under your main IntelliJ config folder, which on OSX is ~/Library/Application Support/IntelliJIdea13. Know the absolute path to where you put them.
Edit your 'Run Configurations'
Add a new one using 'Mocha'
Set 'Node interpreter' to the full path to your ssh executable. On my machine, it's /usr/bin/ssh.
Set the 'Node options' to this behemoth, tweaking as necessary for your own configuration:
-i /Users/USERNAME/.vagrant.d/insecure_private_key vagrant#MACHINE_IP "cd /vagrant; node_modules/mocha/bin/_mocha --recursive --timeout 2000 --ui bdd --reporter /vagrant/tools/mocha_intellij/mochaIntellijReporter.js test" #
REMEMBER! The # at the end is IMPORTANT, as it will cancel out everything else the Mocha run config adds to this command. Also, remember to use an absolute path everywhere that I have one.
Set 'Working directory', 'Mocha package', and 'Test directory' to exactly what they should be if you were running mocha tests locally. These will not impact the test execution, but this interface WILL check to make sure these are valid paths.
Name it, save, and run!
Fully integrated, remote testing bliss.
1) In Webstorm, create a "Remote Debug" configuration, using port 5858.
2) Make sure that port is open on your server or VM.
3) On the remote server, execute Mocha with the --debug-brk option: mocha test --debug-brk
4) Back in Webstorm, start the remote-debug you created in Step 1, and and execution should pause on set breakpoints.
I have a node.js project that compiles less files to css when I start the app. I do this by modifying the start script in package.json like so:
{
// omitted for brevity
start: { lessc public/stylesheets/styles.less > public/stylesheets/styles.css; node app.js; }
}
This works nicely locally, but not at all on my Windows Azure instance. Either because less needs to be installed globally on the machine for this to work, or because Azure doesn't run npm start. Or both. Either way, I need another solution!
I thought custom deployments was the answer (I'm using git remote deployment) and I tried modifying the deploy.cmd to include
call "lessc public/stylesheets/styles.less > public/stylesheets/styles.css;"
No joy. I even tried
call "%SITE_ROOT%/node_modules/less/bin/lessc %SITE_ROOT%/public/stylesheets/styles.less > %SITE_ROOT%/public/stylesheets/styles.css;
Am I coming at this the wrong way? How can I keep the compiled css files out of my source control and compile them on the server after deployment to Azure?
Thanks!
OK, I finally have this going, I think.
For some reason, even though the physical file is on the disk (I can see them with my FTP client), Azure is not letting me run lessc in the \node_modules\less\bin folder, but it does let me run the version in the \node_modules\.bin folder.
In the end, I added the following lines to my deploy.cmd file, and it worked!
IF NOT DEFINED LESS_COMPILER (
SET LESS_COMPILER=%DEPLOYMENT_TARGET%\node_modules\.bin\lessc
)
call %LESS_COMPILER% %DEPLOYMENT_TARGET%\public\stylesheets\styles.less > %DEPLOYMENT_TARGET%\public\stylesheets\styles.css