I am using NodeServices to create PDF in AspNetCore app. App works fine on local machine but when deployed on production, on calling the pdf function, I get the following error:
Error: spawn D:\home\site\wwwroot\node_modules\phantomjs\lib\phantom\bin\phantomjs ENOENT
at _errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19) at onErrorNT (internal/child_process.js:372:16)
at _combinedTickCallback (internal/process/next_tick.js:138:11)
at process._tickCallback (internal/process/next_tick.js:180:9)
Microsoft.AspNetCore.NodeServices.HostingModels.NodeInvocationException: Error during rendering report: spawn D:\home\site\wwwroot\node_modules\phantomjs\lib\phantom\bin\phantomjs ENOENT
Error: spawn D:\home\site\wwwroot\node_modules\phantomjs\lib\phantom\bin\phantomjs ENOENT
at _errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19) at onErrorNT (internal/child_process.js:372:16)
at _combinedTickCallback (internal/process/next_tick.js:138:11)
at process._tickCallback (internal/process/next_tick.js:180:9)
I verified that all the files are at their right place. node_modules are present in the deployment.
Node Version on Azure: 8.9.4
Code to generate PDF:
module.exports = function (callback, html) {
var jsreport = require('jsreport-core')();
jsreport.init().then(function () {
return jsreport.render({
template: {
content: html,
engine: 'jsrender',
recipe: 'phantom-pdf'
}
}).then(function (resp) {
callback(/* error */ null, resp.content.toJSON().data);
}).catch(function (e) {
callback(/* error */ e, null);
});
}).catch(function (e) {
callback(/* error */ e, null);
});
};
If you use Azure App Service with a free plan, you cannot render pdf on the server. This is because the service runs in a sandbox and thus cannot run third-party executables, like node.exe. You need to upgrade your service's plan to 'Basic' or higher.
The issue was with the installation of Node packages. I was using Hosted Linux on Azure to build the solution. Switched to Hosted VS2017 build and everything is working smoothly.
https://github.com/pofider/phantom-html-to-pdf/issues/68
Related
I am working on a project that requires MongoDb backup after a certain period of time. The project is being built over MongoDB, Express as backend technologies with nodejs.
app is running on vercel and localhost. i want to get the backup from the application only.
i want to get the db backup using the application daily (i know about cron but i am stuck in backup part).
how can i get the mongodb backup using the nodejs application ?
i tried using the following code to get the backup (on my local host which is a windows) but failed :
const { spawn } = require('child_process')
const child = spawn('mongodump', [
`--db=${DB_NAME}`,
`--archive=${ARCHIVE_PATH}`,
'--gzip'
])
the error:
node:events:491
throw er; // Unhandled 'error' event
^
Error: spawn mongodump ENOENT
at Process.ChildProcess._handle.onexit (node:internal/child_process:283:19)
at onErrorNT (node:internal/child_process:478:16)
at processTicksAndRejections (node:internal/process/task_queues:83:21)
Emitted 'error' event on ChildProcess instance at:
at Process.ChildProcess._handle.onexit (node:internal/child_process:289:12)
at onErrorNT (node:internal/child_process:478:16)
at processTicksAndRejections (node:internal/process/task_queues:83:21) {
errno: -4058,
code: 'ENOENT',
syscall: 'spawn mongodump',
path: 'mongodump',
spawnargs: [
'--db=store',
'--archive=C:\\tmp\\5484689.tar',
'--gzip'
]
}
i tried to solve the error but i couldnt and then now im trying to find a new way to get the mongodb backup on both localhost and vercel using the nodejs application.
and then i want to push the mongodb backup to minio s3.
i created a node application which is used to take a log file in json format and after processing the data, we create a csv file. i am using the following packages in the app
"dependencies": {
"bluebird":"^3.7.2",
"js-yaml":"^4.1.0",
"json2csv":"^5.0.6",
"node-jq": "^1.12.0",
"yargs": "^17.0.1"
}
The app has been working properly for last 6 months and there has been no change in code. We did a scheduled deployment 5 days back and since then it does not generate the report and we get this error when we try to generate the file.
events.js:377
throw er; // Unhandled 'error' event
^
Error: spawn C:\reporting-app\node_modules\node-jq\bin\jq ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:274:19)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:82:21)
Emitted 'error' event on ChildProcess instance at:
at Process.ChildProcess._handle.onexit (internal/child_process.js:280:12)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:82:21) {
errno: -4058,
code: 'ENOENT',
syscall: 'spawn C:\\reporting-app\\node_modules\\node-jq\\bin\\jq',
path: 'C:\\reporting-app\\node_modules\\node-jq\\bin\\jq',
spawnargs: [
'--slurp',
'[ .[] .logs[] ] | map(select(.context.recordID != "12345")) | unique_by(.context.ID) | map(select(.context.ID != null)) | map({ ID: .context.ID, timestamp: .timestamp, kiosk: .context.recordID, appTransactionId: .context.appTransactionId })'
]}
I think the error comes when we try to use node-jq.run method (see below)
execute(source) {
return jq.run(this.query, source, {
input: 'string',
slurp: true,
});
}
Any help in this regard would be appreciated.
I dont know exactly what the problem was but I tried downgrading the version of node.js to an older version (which was used when the app was built and deployed). I deleted node_modules and package-lock.json files. Did an npm install and the the app started working locally. I promoted the package-lock.json files to the server and the server started working too.
I have a subsequent question. For last 5 months there was no change in the code. Not even package or package-lock.json files. However we did an npm install everytime we generated the report using this app. The dev ops say they did not update the node version on the server. Any one knows how this downgrade of node may have solved the problem?
I am writing Node.js script to create thumbnails with imagemagick. I running Windows 10. I have installed the latest Windows Binary release of ImageMagick, selecting the options to add it to the path and install legacy utilities (e.g., convert). I am using node-imagemagick to interface with ImageMagick from my script.
I can successfully use ImageMagick from the command line. For example, if I run the following command convert C:/Users/Admin/Desktop/in.jpg -resize 150x150 C:/Users/Admin/Desktop/out.jpg ImageMagick will create a thumbnail. However, if I run the convert function with the same arguments in my Node.js script:
var im = require('imagemagick');
im.convert(['C:/Users/Admin/Desktop/in.jpg', '-resize', '150x150', 'C:/Users/Admin/Desktop/out.jpg'], function (err, stdout) {
if (err) throw err;
console.log('stdout:', stdout);
});
Returns an error
Error: Command failed: Invalid Parameter - /Users
at ChildProcess.<anonymous> (C:\Users\Admin\Documents\Projects\node_script\node_modules\imagemagick\imagemagick.js:88:15)
at ChildProcess.emit (events.js:311:20)
at maybeClose (internal/child_process.js:1021:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5) {
timedOut: false,
killed: false,
code: 4,
signal: null
}
In case this was because of the path separators being different on Windows, I tried replacing the slashes with double backslashes and surrounding the paths in quotes ['"C:\\Users\\Admin\\Desktop\\in.jpg"',.... However, I instead get the error Error: Command failed: Invalid Parameter - -resize.
This also happens with the identify command. identify -format %[EXIF:*] C:/Users/Admin/Desktop/in.jpg sucussfully returns information about my image while my Node.js script:
im.identify(['identify', 'C:/Users/Admin/Desktop/in.jpg'], function(err, features){
if (err) throw err;
console.log(features);
});
Returns an error
Error: spawn identify ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:84:21)
Emitted 'error' event on ChildProcess instance at:
at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:84:21) {
errno: 'ENOENT',
code: 'ENOENT',
syscall: 'spawn identify',
path: 'identify',
spawnargs: [ 'identify', 'C:/Users/Admin/Desktop/in.jpg' ]
}
If these errors are not correctable or are unnecessarily hard to correct, is there a better way to create thumbnails in Node.js? I will eventually need to be able to generate thumbnails for videos and .swf files. The last publish of node-imagemagick was 7 years ago, is there anything more recent?
There is a much better alternative and actively maintained solution to node-imagemagick called sharp.
Usage (based on your question):
const sharp = require('sharp');
sharp('C:/Users/Admin/Desktop/in.jpg')
.resize(150, 150)
.toFile('C:/Users/Admin/Desktop/out.jpg')
.then(outputInfo => {
console.log(outputInfo);
})
.catch(reason => {
console.log(reason);
});
Found a comment saying to restart your device if using node imagemagick with Windows. After a restart commands called from the Node.js script worked without errors.
I am attempting to have my node server launch a .exe file on a Linux hosted implementation of NODEJS
My .exe is located here: '/home/username/projects/ProjectName/server/webserver/Project.exe'
and when I attempt to start the exe
with:
exec('/home/username/projects/ProjectName/server/webserver/Project.exe', ["/home/username/projects/ProjectName/server/webserver/files/"+date], function(err, data) {
}
i am getting a file not fond error
that looks like this:
{ Error: Command failed: /home/username/projects/ProjectName/server/webserver/Project.exe /home/username/projects/ProjectName/server/webserver/files/31005
/home/username/projects/ProjectName/server/webserver/Project.exe: 1: /home/username/projects/ProjectName/server/webserver/Project.exe: MZ�##���#�#��: not found
/home/username/projects/ProjectName/server/webserver/Project.exe: 2: /home/username/projects/ProjectName/server/webserver/Project.exe: Syntax error: ")" unexpected
at ChildProcess.exithandler (child_process.js:294:12)
at ChildProcess.emit (events.js:198:13)
at maybeClose (internal/child_process.js:982:16)
at Socket.stream.socket.on (internal/child_process.js:389:11)
at Socket.emit (events.js:198:13)
at Pipe._handle.close (net.js:606:12)
killed: false,
code: 2,
signal: null,
cmd:
'/home/username/projects/ProjectName/server/webserver/Project.exe /home/username/projects/ProjectName/server/webserver/files/31005' }
When attempting to run the same function on a windows based NodeJS with windows directories instead of linux it works, the file can be opened via Wine on Linux, is there somewhere in my function call where i need to direct it to open the .exe with WINE? If so how do I go about doing that?
Try this
const { exec} = require('child_process');
exec('wine /home/username/projects/ProjectName/server/webserver/Project.exe /home/username/projects/ProjectName/server/webserver/files/'+date,
function(err, data){
});
https://superuser.com/questions/1058985/launch-program-with-wine-using-exe-arguments
https://stackoverflow.com/a/49069169/12167785
I got my desired functionality using the following:
exec("wine", ["/home/username/projects/ProjectName/server/webserver/Project.exe", date], function(err,data){
}
My aim to obtain the buffer of the image which is stored in the s3 bucket. I am using a npm package named request which does a simple http/https request to the url provided on the s3 bucket. When I am using the package and doing the https request on the image url provided to me by s3 bucket I am getting the following error
events.js:85
throw er; // Unhandled 'error' event
^
Error: spawn convert ENOENT
at exports._errnoException (util.js:746:11)
at Process.ChildProcess._handle.onexit (child_process.js:1053:32)
at child_process.js:1144:20
at process._tickDomainCallback (node.js:381:11)
I went through this question on stackOverflow but couldn't find the resolution for my problem. My Code is as follows:
request(url, function (err, response,res1) {
if (err) {
//error Handling;
} else {
buffer = res1;
//Some Logic
}
});
Can Somebody help me with issue?