Api generation failing No such file/directory

[L4stIdi0t]

Description of the bug

Generating the api fails

Steps to reproduce

dart run build_runner build --delete-conflicting-outputs
# OR
flutter pub run build_runner build --delete-conflicting-outputs

Minimal openapi specification

https://petstore3.swagger.io/api/v3/openapi.json

Annotation used

@openapi(
additionalProperties:
DioProperties(pubName: 'petstore_api', pubAuthor: 'Johnny_dep'),
inputSpec:
RemoteSpec(path: 'https://petstore3.swagger.io/api/v3/openapi.json'),
typeMappings: {'Pet': 'ExamplePet'},
generatorName: Generator.dio,
runSourceGenOnOutput: true,
outputDirectory: 'api/petstore_api',
)
class Example {}

Expected behavior

a nicely generated api package

Logs

[INFO] openapi_generator on lib/main.dart:Loaded cached and current spec files.
[INFO] openapi_generator on lib/main.dart:Dirty Spec found. Running generation.
[INFO] openapi_generator on lib/main.dart:Running following command to generate openapi client - [ generate -o=api/petstore_api -i=https://petstore3.swagger.io/api/v3/openapi.json -g=dart-dio --type-mappings=Pet=ExamplePet --additional-properties=allowUnicodeIdentifiers=false,ensureUniqueParams=true,useEnumExtension=true,enumUnknownDefaultCase=false,prependFormOrBodyParameters=false,pubAuthor=Johnny_dep,pubName=petstore_api,legacyDiscriminatorBehavior=true,sortModelPropertiesByRequiredFlag=true,sortParamsByRequiredFlag=true,wrapper=none ]
[SEVERE] openapi_generator on lib/main.dart:
Failed to generate content.

ProcessException: No such file or directory
  Command: dart run openapi_generator_cli:main generate -o=api/petstore_api -i=https://petstore3.swagger.io/api/v3/openapi.json -g=dart-dio --type-mappings=Pet=ExamplePet --additional-properties=allowUnicodeIdentifiers=false,ensureUniqueParams=true,useEnumExtension=true,enumUnknownDefaultCase=false,prependFormOrBodyParameters=false,pubAuthor=Johnny_dep,pubName=petstore_api,legacyDiscriminatorBehavior=true,sortModelPropertiesByRequiredFlag=true,sortParamsByRequiredFlag=true,wrapper=none
[INFO] openapi_generator on lib/main.dart:Found generated timestamp. Updating with 2024-11-13T09:43:10.992397

Screenshots

No response

Platform

Linux

Library version

6.0.0

Flutter version

3.24.4

Flutter channel

stable

Additional context

Running the following works just fine

dart run openapi_generator_cli:main generate -o=api/petstore_api -i=https://petstore3.swagger.io/api/v3/openapi.json -g=dart-dio --type-mappings=Pet=ExamplePet --additional-properties=allowUnicodeIdentifiers=false,ensureUniqueParams=true,useEnumExtension=true,enumUnknownDefaultCase=false,prependFormOrBodyParameters=false,pubAuthor=Johnny_dep,pubName=petstore_api,legacyDiscriminatorBehavior=true,sortModelPropertiesByRequiredFlag=true,sortParamsByRequiredFlag=true,wrapper=none

[gibahjoe]

Hello, could you enable debug logging by setting it to true on your annotation then try again? Please post logs if possible.

[L4stIdi0t]

Sorry for the delay, i do not see any debug info in the following:

l4sti@fedora:~/Projects/local/flut-front$ flutter pub run build_runner build --delete-conflicting-outputs
Deprecated. Use `dart run` instead.
Building package executable... (1.8s)
Built build_runner:build_runner.
[INFO] Generating build script completed, took 145ms
[INFO] Precompiling build script... completed, took 1.8s
[INFO] Building new asset graph completed, took 635ms
[INFO] Checking for unexpected pre-existing outputs. completed, took 0ms
[INFO] Generating SDK summary completed, took 2.2s
[INFO] openapi_generator on lib/main.dart:

:::::::::::::::::::::::::::::::::::::::::::
::      Openapi generator for dart       ::
:::::::::::::::::::::::::::::::::::::::::::

[WARNING] openapi_generator on lib/main.dart:
Using a remote specification, a cache will still be created but may be outdated.

[WARNING] openapi_generator on lib/main.dart:
loadSpec - /home/l4sti/Projects/local/flut-front/.dart_tool/openapi-generator-cache.json
[WARNING] openapi_generator on lib/main.dart:
loadSpec - https://petstore3.swagger.io/api/v3/openapi.json
[INFO] openapi_generator on lib/main.dart:Loaded cached and current spec files.
{}
{"openapi":"3.0.2","info":{"title":"Swagger Petstore - OpenAPI 3.0
removed the openapi.json
"api_key","in":"header"}}}}

[INFO] openapi_generator on lib/main.dart:Dirty Spec found. Running generation.
[INFO] openapi_generator on lib/main.dart:Running following command to generate openapi client - [ generate -o=api/petstore_api -i=https://petstore3.swagger.io/api/v3/openapi.json -g=dart-dio --type-mappings=Pet=ExamplePet --additional-properties=allowUnicodeIdentifiers=false,ensureUniqueParams=true,useEnumExtension=true,enumUnknownDefaultCase=false,prependFormOrBodyParameters=false,pubAuthor=Johnny dep..,pubName=petstore_api,legacyDiscriminatorBehavior=true,sortModelPropertiesByRequiredFlag=true,sortParamsByRequiredFlag=true,wrapper=none ]
[SEVERE] openapi_generator on lib/main.dart:
Failed to generate content.

ProcessException: No such file or directory
  Command: dart run openapi_generator_cli:main generate -o=api/petstore_api -i=https://petstore3.swagger.io/api/v3/openapi.json -g=dart-dio --type-mappings=Pet=ExamplePet --additional-properties=allowUnicodeIdentifiers=false,ensureUniqueParams=true,useEnumExtension=true,enumUnknownDefaultCase=false,prependFormOrBodyParameters=false,pubAuthor=Johnny dep..,pubName=petstore_api,legacyDiscriminatorBehavior=true,sortModelPropertiesByRequiredFlag=true,sortParamsByRequiredFlag=true,wrapper=none
[INFO] openapi_generator on lib/main.dart:Found generated timestamp. Updating with 2024-11-18T19:00:49.272190
[INFO] Running build completed, took 8.3s
[INFO] Caching finalized dependency graph completed, took 60ms
[SEVERE] Failed after 8.3s
l4sti@fedora:~/Projects/local/flut-front$ dart --version
Dart SDK version: 3.5.4 (stable) (Wed Oct 16 16:18:51 2024 +0000) on "linux_x64"

i am using dart 3 if that matters because i found some issues with dart 3
i added debugLogging: true, just to be sure

[Dreaming-Codes]

Had the same issue try with a local spec instead of a remote one

[L4stIdi0t]

using inputSpec: InputSpec(path: 'test.json'), gives the same errors

[gibahjoe]

Hi, i am unable to recreate this issue however, i suspect it is due to the cache of the spec not being created yet on first run.

Please add skipIfSpecIsUnchanged option and set it to false (default is true).

@openapi(
additionalProperties:
DioProperties(pubName: 'petstore_api', pubAuthor: 'Johnny_dep'),
inputSpec:
RemoteSpec(path: 'https://petstore3.swagger.io/api/v3/openapi.json'),
typeMappings: {'Pet': 'ExamplePet'},
generatorName: Generator.dio,
runSourceGenOnOutput: true,
skipIfSpecIsUnchanged: false, // <======= add this
outputDirectory: 'api/petstore_api',
)
class Example {}

[L4stIdi0t]

After adding skipIfSpecIsUnchanged : false i still get the same logs as mentioned before
i also used flutter clean but no success

after generating the files using the command which is logged dart run openapi generator ... i am missing serializers.g.dart

[jungnitz]

If you are on Linux, make sure that your PATH is set correctly in .bashrc, not in .bash_profile. That fixed this issue for me.

[gibahjoe]

Thanks @jungnitz , PATH set to what exactly? is it the Java path?

[jungnitz]

Ah, no, the path to the dart / flutter bin folder. It fails with No such file or directory because the dart executable cannot be found in the current PATH (apparently the environment variables are not inherited from the shell that you run the build command in).

[ctrl-Felix]

Just in case someone stumbles upon this in the future.

The problem for me was that the outputDirectory variable wasn't correct and pointed to a non-existing folder.

[SolidTux]

The problem for me was that the outputDirectory variable wasn't correct and pointed to a non-existing folder.

I also made the same mistake, maybe the error message could be improved in this case?