[SOLVED] dart & flutter - cloud function execution error from client and server

[sly elbow]

src/server.dart:115:25: Error: Method not found: 'main'.
              user_code.main(context)
                        ^^^^
src/server.dart:125:38: Error: Method not found: 'main'.
            output = await user_code.main(context);
                                     ^^^^
Error: AOT compilation failed
Generating AOT kernel dill failed!```


Am unable to detect what the error is
Kindly assist if you can

dart - function build error

dart - function deployment error

[teal tundra]

Your function signiture is wrong with you function

Can I see your code? Did you start from a starter template?

It's trying to run the main function of your Appwrite function, but isn't finding the main function

[sly elbow]

I used the starter template @teal tundra

  final client = Client();

  // Uncomment the services you need, delete the ones you don't
  // final account = Account(client);
  // final avatars = Avatars(client);
  // final database = Databases(client);
  // final functions = Functions(client);
  // final health = Health(client);
  // final locale = Locale(client);
  // final storage = Storage(client);
  // final teams = Teams(client);
  // final users = Users(client);

  client
      .setEndpoint("https://cloud.appwrite.io/v1")
      .setProject(projectId)
      .setKey("API_KEY")
      .setSelfSigned(status: true);
  emptier();
  setter();
  // api from env var
  apiToken = (req.variables['DAMMY_GONGOZ_API']);
  // decode user request
  userRequest = await jsonDecode(req.payload);

  // decide which service
  superResponse = await whichServiceExec();
  {
    res.json({
      'Status': superResponse,
    });
  }
}```

[teal tundra]

👀 where did u get this?

this is very very old

[sly elbow]

sighs

And the function was created today and autogenerated by appwrite cli

[teal tundra]

ahhh yes

the CLI

can u do appwrite -v ?

what version is ur cli

maybe we missed something 🙃

[sly elbow]

2.0.2

[teal tundra]

!

[sly elbow]

sighs

[teal tundra]

we're on like

4.1

😅

try updating the CLI

lemme know how that goes

[sly elbow]

what's the CMD for upgrade?

[teal tundra]

How'd u install?

[sly elbow]

I think via npm I guess

[teal tundra]

$ npm install -g appwrite-cli

run this again

i think should work

🤣

idk npm that well

[sly elbow]

I just did that

Still seeing version 2.0.2

[teal tundra]

arrhgggg

uninstall and try fresh install?

i don't remember the npm command 🤔 lemme go google 😄

[sly elbow]

Upgraded

[teal tundra]

Oh nice

IF it's still giving you an old function lmk

I'll go chase down a fix 😄

[sly elbow]

the new pattern seems trickier

[sly elbow]

So how do I decode a payload from client?

[teal tundra]

if it's JSON

body is already decoded

bodyRaw is a string

https://github.com/appwrite/templates/tree/main/dart

You can check a few examples here

https://appwrite.io/docs/products/functions/examples#form-submission

[sly elbow]

does it mean that data sent from client is not encoded?
or do you mean that the data gotten by the function is automatically decoded when it gets to it?

```// The req object contains the request data
if (context.req.method == 'GET') {
// Send a response with the res object helpers
// res.send() dispatches a string back to the client
return context.res.send("Hello);
}

// res.json() is a handy helper for sending JSON
return context.res.json({
'motto': 'Build like a team of hundreds_',
'learn': 'https://appwrite.io/docs',
'connect': 'https://appwrite.io/discord',
'getInspired': 'https://builtwith.appwrite.io',
});```

[sly elbow]

@teal tundra

[sly elbow]

@proper fiber
@runic sandal
@real storm
@plucky jasper

thi may be inappropriate to tag you all, but I had no option
been unable to execute dart function after cli upgrade to latest...

[proper fiber]

You're using a template for an old appwrite version

That's the issue

[sly elbow]

I have upgraded i @proper fiber
to version 4

[proper fiber]

What's the updated code?

[sly elbow]

  //
  final client = Client();
  client
      .setEndpoint("https://cloud.appwrite.io/v1")
      .setProject(projectId)
      .setKey("API_KEY")
      .setSelfSigned(status: true);
  // You can log messages to the console
  context.log('Hello, Logs!');

  // If something goes wrong, log an error
   context.error('Hello, Errors!');
  emptier();
  userRequest = context.req.query["numberToProcess"];
setter();

  // api from env var
   apiToken = (context.variables['DAMMY_GONGOZ_API']);
  // decode user request

  // decide which service
  superResponse = await whichServiceExec();
  ///////////////////////////////////////////////////
  // The `req` object contains the request data
if (context.req.method == 'GET') {
// Send a response with the res object helpers
 //  `res.send()` dispatches a string back to the client
   return context.res.send(superResponse);
   }

  // `res.json()` is a handy helper for sending JSON
  return context.res.json({
    'motto': 'Build like a team of hundreds_',
    'learn': 'https://appwrite.io/docs',
    'connect': 'https://appwrite.io/discord',
    'getInspired': 'https://builtwith.appwrite.io',
    'num': userRequest.toString()
  });
}```

Client Code Was:

          .createExecution(functionId: 'all_services', data: jsonEncode(data), );```

Changed To(after seeing new docs):

```  dynamic execution = await appWriteLogicExtender.functions.createExecution(
          functionId: 'all_services',
          body: json.encode(data),
          async: false,
          path: '/',
          method: 'GET',
          headers: {'X-Custom-Header': '123'});```

@proper fiber

[proper fiber]

And what's the error?

[sly elbow]

@proper fiber

[runic sandal]

Were you able to deploy the template code and execute it successfully?

[sly elbow]

Deployment was successful but execution wasn't.

Can't phantom how to use the new template yet.

[runic sandal]

So you did

appwrite init function
appwrite deploy function

Without modifying any code and the execution failed?

[teal tundra]

Please be patient and avoid spaming people on this server 🙂

[teal tundra]

It's like an HTTP request.

The client calls the Appwrite function, which sends an HTTP request, the request has a content type of json, but the body is by default still a string.

body is automatically decoded to be JSON
bodyRaw gives you the raw HTTP request body

[sly elbow]

still not clear

it's syntax is totally different from the former version that I had

[sly elbow]

or maybe if I could see a working client code that sends request and cloud function receiving it and making use of it before sending a response back to client

I have nto been abl to proceed for day now

[runic sandal]

@sly elbow So you did this already?

[sly elbow]

yes, execution is what is next currently

[runic sandal]

What do you mean?

[sly elbow]

the execution is throwing back error

[sly elbow]

Now that I am trying to deploy the function the old way, I am still getting errors.
Old function error during deployment after it failed, below is the logs:

src/server.dart:115:25: Error: Method not found: 'main'.
              user_code.main(context)
                        ^^^^
src/server.dart:125:38: Error: Method not found: 'main'.
            output = await user_code.main(context);
                                     ^^^^
Error: AOT compilation failed
Generating AOT kernel dill failed!```

Sincerely, the developer experience with the updated dart function is not friendly to me.
I can't use either new way of deploying or the old way.

I am just delayed by 'no idea of what to do' for days.

[teal tundra]

👀 What is the code generated by the CLI?

It works for me

I think there's something wrong somewhere, I'm curious why it's not working, too.

[timid leaf]

What version of dart are you using?
Have you set the function entrypoint?

[runic sandal]

what error? and how are you executing the function?

[runic sandal]

and you're on appwrite cloud right?

[sly elbow]

dart 3.1.2
Yes

Besides, I used a a starter template code

[sly elbow]

am executing from Flutter app
below is the error
flutter: Error gotten from server: FormatException: Unexpected end of input (at character 1)

[sly elbow]

yes, appwrite cloud
@runic sandal

[runic sandal]

and what if you execute from the Appwrite console?

[runic sandal]

where do you see this error?

[sly elbow]

Not bad

But users won't be able to
Like myself

[sly elbow]

Flutter terminal
Catching error during execution
@runic sandal

[runic sandal]

What do you mean?

[runic sandal]

What do you mean?

[sly elbow]

While executing the function from my flutter app, that was the error that was displayed

[sly elbow]

I can execute function from console, but what about app users?
No console access for any of them
@runic sandal

[runic sandal]

This means the function is working fine and something may be wrong with your client code. what's your client code?

[sly elbow]

        functionId: 'all_services',
        data: jsonEncode(data),
      );
      execution.then((response) async {
      }).catchError((error) {
});```
@runic sandal

even when I changed to the new syntax, it won't even send any communication to the cloud function

[sly elbow]

appwrite: ^11.0.0

is the only needed package for flutter front end?

[sly elbow]

please someone should help, I ave been on this for days

[runic sandal]

These are not the right params for version 11.0.0 of the SDK. Please also share more of your code and the stack trace of the error

[sly elbow]

I initialized appwrite in a class

Appwrite Class in client code

class AppWriteLogic extends GetxController {
//  create account, function instance
  Databases databases = Databases(client);
  Functions functions = Functions(client);
  Realtime realtime = Realtime(client);
  late Account account;
// Functions functions = Functions(client);
  @override
  void onInit() async {
    if (kDebugMode) {
      print('appwrite controller inited');
    }
    super.onInit();
    appwriteEndpointProjectID();
  }

  String walletBalanceCollectionID = "walletBalanceCollectionID";
  String walletDatabaseID = "walletDatabaseID";
//   pass in secret data
  appwriteEndpointProjectID() {
    client.setEndpoint(endpoint); // Your API Endpoint
    client.setProject(projectId); // ID
    client.setSelfSigned(status: false);
    account = Account(client);
  }
}

The use of Appwrite Init Class in client code
AppWriteLogic appWriteLogicExtender = AppWriteLogic();
The use of execution api in client code

 dynamic data = {"name":userName, "class":userClass}
 Future execution = appWriteLogicExtender.functions.createExecution(
        functionId: 'automate_service_sender_2',
        data: jsonEncode(data),
      );
      execution.then((response) async {
      // do this
      print(response);
      }).catchError((error) {
       print(error);
      });

Dart function in server code

Future<dynamic> main(final context) async {
final client = Client();
  client
       .setEndpoint("https://cloud.appwrite.io/v1")
       .setProject(projectID)
       .setKey("API_KEY")
       .setSelfSigned(status: true);

  userRequest = jsonDecode(context.req.body);
  context.res.json({"To": "Hi"});
  context.res.send(userRequest.toString());
}

dart & flutter - cloud function execution error from client and server

[sly elbow]

@runic sandal @proper fiber @timid leaf
here is the code above

[runic sandal]

as i said, the params for functions.createExecution() is incorrect for version 11.0.0 of the flutter sdk

and please share details about the stacktrace of the error

[runic sandal]

for your function, you should not be calling both json and send. also, you need to return one of those

[sly elbow]

Receiver: Instance of 'Functions'
Tried calling: createExecution(data: "{\"numberToProcess\":\"phoneNum\",\"userMail\":\"[email protected]\",\"userID\":\"65383643cc5e7399b65b9\",\"totalServiceCharge\":\"120\",\"serciceTypeAndService\":\"MTN SME\",\"serviceQuantity\":\"500MB\",\"walletBalanceDocumentID\":\"phoneNum\",\"networkID\":\"1\",\"planID\":\"289\",\"serviceName\":\"Mobile Data\",\"customerAmount\":\"120\",\"currentUserBalance\":\"170\",\"previousWalletBalance\":\"50\",\"whatTypeOfTransaction\":\"Mobile Data\",\"supplierRate\":\"107.5\",\"transactionID\":\"unique()\"}", functionId: "all_services", headers: _Map len:1, method: "POST", path: "/", xasync: false)
Found: createExecution({required String functionId, String? data, bool? xasync}) => Future<Execution>```

the above error was getting using the new function...
```dynamic execution = await appWriteLogicExtender.functions.createExecution(
        functionId: 'automate_service_sender_2',
        data: jsonEncode(data),
        xasync: false,
        path: '/',
        method: 'POST',
        headers: {
          'content-type': 'application/json',
        },
  );```

[runic sandal]

what is outputting this?

[runic sandal]

you have something wrong with your dependencies. maybe they're not actually downloaded/updated or something

[sly elbow]

 Future execution = appWriteLogicExtender.functions.createExecution(
        functionId: 'automate_service_sender_2',
        data: jsonEncode(data),
      );
      execution.then((response) async {
      // do this
      print(response);
      }).catchError((error) {
       print(error);
      });```

[sly elbow]

which should I use?
dart_appwrite: ^10.0.0
appwrite: ^11.0.0
appwrite_auth_kit:

[runic sandal]

why do you have dart_appwrite in your flutter app? you shouldn't be using that in your flutter app

you should be using 11.0.0 of the appwrite package

[runic sandal]

set a breakpoint at those 2 prints to see which one is being triggered.

I don't know where this text is coming from:

Error gotten from server

Is that in your function? somewhere else in your front end code?

[sly elbow]

Error gotten from server precedes the error from the server

I wrote it in frontend code

[sly elbow]

but I later removed others...
and then sent dummy request to server so I can get a predicted response also, but still resulted in error

@runic sandal
can't phantom the issues 😞😕

[runic sandal]

where, please share the code

[runic sandal]

did you fix the package problem?

[sly elbow]

I just removed it

And still face errors
@runic sandal

[sly elbow]

I meant I remove the remaining packages

And I'm using only the official appwrite: ^11.0.0 package 📦

[runic sandal]

so did you update the client code? what's your code now?

[sly elbow]

        functionId: 'automate_service_sender_2',
        data: jsonEncode(data),
        xasync: false,
        path: '/',
        method: 'POST',
        headers: {
          'content-type': 'application/json',
        },
  );```

or how do I switch to former version, to avoid all this stress

[runic sandal]

Again, this is wrong and shouldn't even compile.

Try stopping your debugger, cleaning your flutter project, and restarting your IDE

[sly elbow]

The appWriteLogicExtender is an object of a class that initializes appwrite

works for other older function execution in same project

What do you suggest for me to do?

Cause when I even removed the initialization, it was still same, so I just left the object use

[runic sandal]

Did you do this? #1164988968262172722 message

[sly elbow]

I did flutter clean and then pub get, same thing
@runic sandal

[runic sandal]

Please hover over createExecution until the popup appears and share a screenshot of the popup and the code

[runic sandal]

Please share all the code

[sly elbow]

okay

[sly elbow]

the former syntax for getting variables was
req.variables['ENV_VAR'];

what is the new syntax?
@runic sandal

[runic sandal]

You haven't shared all the code or the screenshot....

[sly elbow]

I've figured getting response, so I didn't want to stress you.

What's left it how the cloud function can get my requests.

[runic sandal]

https://appwrite.io/docs/products/functions/development#environment-variables

[sly elbow]

okay, I'll check that now.

and how will the function get my request?

[runic sandal]

What are you talking about? When you call functions.createExecution() the request gets sent to the function

[sly elbow]

Yes, how will the dart function get the request after execution is triggered

[runic sandal]

In the execution.responseBody. https://appwrite.io/docs/references/cloud/models/execution

[sly elbow]

}```

is this accurate?

My laptop isn't charged, waiting for power supply and by then you may be busy, so if I can get the clarity as soon as you can assist

[runic sandal]

Yes...

I'm closing this post now since the original problem is solved. Feel free to create a new post if you're still having trouble.

[sly elbow]

So how do I get and decode what the client said inside the dart function?

To be used by the cloud function during execution lifecycle?

[sly elbow]

okay, but before then, kindly check my last question before this

[runic sandal]

[SOLVED] dart & flutter - cloud function execution error from client and server

[sly elbow]

[closed] dart & flutter - cloud function execution error from client and server

[runic sandal]

I already told you #1164988968262172722 message

[SOLVED] dart & flutter - cloud function execution error from client and server

[sly elbow]

I'll check it right now