Unable to deploy single functions

[jacobevans]

I have an issue possibly related to #161, but I don't think it's a duplicate. I was experiencing the issues described in #161, I updated this package, and now I'm getting a different error when I try to deploy a single function. See below for command full debug output. Please let me know if there's any pertinent info that I've left out.

$ SLS_DEBUG=* sls deploy function -f my_function_name
Serverless: Load command run
Serverless: Load command config
Serverless: Load command config:credentials
Serverless: Load command create
Serverless: Load command install
Serverless: Load command package
Serverless: Load command deploy
Serverless: Load command deploy:function
Serverless: Load command deploy:list
Serverless: Load command deploy:list:functions
Serverless: Load command invoke
Serverless: Load command invoke:local
Serverless: Load command info
Serverless: Load command logs
Serverless: Load command login
Serverless: Load command logout
Serverless: Load command metrics
Serverless: Load command print
Serverless: Load command remove
Serverless: Load command rollback
Serverless: Load command rollback:function
Serverless: Load command slstats
Serverless: Load command plugin
Serverless: Load command plugin
Serverless: Load command plugin:install
Serverless: Load command plugin
Serverless: Load command plugin:uninstall
Serverless: Load command plugin
Serverless: Load command plugin:list
Serverless: Load command plugin
Serverless: Load command plugin:search
Serverless: Load command emit
Serverless: Load command config
Serverless: Load command config:credentials
Serverless: Load command rollback
Serverless: Load command rollback:function
Serverless: Load command requirements
Serverless: Load command requirements:clean
Serverless: Load command requirements:install
Serverless: Invoke deploy:function
Serverless: Installing requirements of requirements.txt in .serverless...
Serverless: Docker Image: lambci/lambda:build-python2.7
Serverless: Invoke package:function
Serverless: Packaging function: my_function_name...
Serverless: Excluding development dependencies...
Serverless: Injecting required Python packages to package...

  Type Error ---------------------------------------------

  path must be a string or Buffer

     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

  Stack Trace --------------------------------------------

TypeError: path must be a string or Buffer
    at fs.readFile (fs.js:379:11)
    at go$readFile (~/project-dir/node_modules/graceful-fs/graceful-fs.js:73:14)
    at Object.readFile (~/project-dir/node_modules/graceful-fs/graceful-fs.js:70:12)
    at Object.readFile (~/project-dir/node_modules/universalify/index.js:5:67)
    at injectRequirements (~/project-dir/node_modules/serverless-python-requirements/lib/inject.js:24:6)
    at ServerlessPythonRequirements.injectAllRequirements (~/project-dir/node_modules/serverless-python-requirements/lib/inject.js:115:12)
    at runCallback (timers.js:763:18)
    at tryOnImmediate (timers.js:734:5)
    at processImmediate (timers.js:716:5)
    at process.topLevelDomainCallback (domain.js:101:23)

  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Forums:        forum.serverless.com
     Chat:          gitter.im/serverless/serverless

  Your Environment Information -----------------------------
     OS:                     darwin
     Node Version:           9.10.0
     Serverless Version:     1.26.1

[jacobevans]

This may be useful also:

$ npm list
project@0.1.0 ~/project-dir
└─┬ serverless-python-requirements@4.0.2
  ├── bluebird@3.5.1
  ├─┬ fs-extra@5.0.0
  │ ├── graceful-fs@4.1.11
  │ ├─┬ jsonfile@4.0.0
  │ │ └── graceful-fs@4.1.11 deduped
  │ └── universalify@0.1.1
  ├─┬ glob-all@3.1.0
  │ ├─┬ glob@7.1.2
  │ │ ├── fs.realpath@1.0.0
  │ │ ├─┬ inflight@1.0.6
  │ │ │ ├── once@1.4.0 deduped
  │ │ │ └── wrappy@1.0.2
  │ │ ├── inherits@2.0.3
  │ │ ├─┬ minimatch@3.0.4
  │ │ │ └─┬ brace-expansion@1.1.11
  │ │ │   ├── balanced-match@1.0.0
  │ │ │   └── concat-map@0.0.1
  │ │ ├─┬ once@1.4.0
  │ │ │ └── wrappy@1.0.2 deduped
  │ │ └── path-is-absolute@1.0.1
  │ └─┬ yargs@1.2.6
  │   └── minimist@0.1.0
  ├── is-wsl@1.1.0
  ├─┬ jszip@3.1.5
  │ ├── core-js@2.3.0
  │ ├── es6-promise@3.0.2
  │ ├─┬ lie@3.1.1
  │ │ └── immediate@3.0.6
  │ ├── pako@1.0.6
  │ └─┬ readable-stream@2.0.6
  │   ├── core-util-is@1.0.2
  │   ├── inherits@2.0.3 deduped
  │   ├── isarray@1.0.0
  │   ├── process-nextick-args@1.0.7
  │   ├── string_decoder@0.10.31
  │   └── util-deprecate@1.0.2
  ├── lodash.get@4.4.2
  ├── lodash.set@4.3.2
  ├── lodash.uniqby@4.7.0
  ├── lodash.values@4.3.0
  └─┬ rimraf@2.6.2
    └── glob@7.1.2 deduped

[dschep]

Oh. hadn't released that fix yet. Done. update to 4.0.3

[jacobevans]

oh, I didn't realize that, sorry!

thanks for your help

[dschep]

no worries! Thanks for the nudge to make a release 😉

[grvhi]

Hi @dschep - I'm seeing exactly the same issue but with version 4.0.4. I'm new to serverless in general, so any pointers gratefully received!

Here are the details:

Serverless: Load command run
Serverless: Load command config
Serverless: Load command config:credentials
Serverless: Load command create
Serverless: Load command install
Serverless: Load command package
Serverless: Load command deploy
Serverless: Load command deploy:function
Serverless: Load command deploy:list
Serverless: Load command deploy:list:functions
Serverless: Load command invoke
Serverless: Load command invoke:local
Serverless: Load command info
Serverless: Load command logs
Serverless: Load command login
Serverless: Load command logout
Serverless: Load command metrics
Serverless: Load command print
Serverless: Load command remove
Serverless: Load command rollback
Serverless: Load command rollback:function
Serverless: Load command slstats
Serverless: Load command plugin
Serverless: Load command plugin
Serverless: Load command plugin:install
Serverless: Load command plugin
Serverless: Load command plugin:uninstall
Serverless: Load command plugin
Serverless: Load command plugin:list
Serverless: Load command plugin
Serverless: Load command plugin:search
Serverless: Load command emit
Serverless: Load command config
Serverless: Load command config:credentials
Serverless: Load command rollback
Serverless: Load command rollback:function
Serverless: Load command requirements
Serverless: Load command requirements:clean
Serverless: Load command requirements:install
Serverless: Invoke package
Serverless: Invoke aws:common:validate
Serverless: Invoke aws:common:cleanupTempDir
Serverless: Generating requirements.txt from Pipfile...
Serverless: Installing requirements of requirements.txt in .serverless...
Serverless: Docker Image: lambci/lambda:build-python3.6
Serverless: Packaging service...
Serverless: Injecting required Python packages to package...
 
  Type Error ---------------------------------------------
 
  path must be a string or Buffer
 
     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.
 
  Stack Trace --------------------------------------------
 
TypeError: path must be a string or Buffer
    at fs.readFile (fs.js:379:11)
    at go$readFile (<path>/node_modules/graceful-fs/graceful-fs.js:73:14)
    at Object.readFile (<path>/node_modules/graceful-fs/graceful-fs.js:70:12)
    at Object.readFile (<path>/node_modules/universalify/index.js:5:67)
    at injectRequirements (<path>/node_modules/serverless-python-requirements/lib/inject.js:24:6)
    at ServerlessPythonRequirements.injectAllRequirements (<path>/node_modules/serverless-python-requirements/lib/inject.js:118:12)
    at ServerlessPythonRequirements.BbPromise.bind.then.then (<path>/node_modules/serverless-python-requirements/index.js:135:43)
    at runCallback (timers.js:763:18)
    at tryOnImmediate (timers.js:734:5)
    at processImmediate (timers.js:716:5)
    at process.topLevelDomainCallback (domain.js:101:23)
 
  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Issues:        forum.serverless.com
 
  Your Environment Information -----------------------------
     OS:                     darwin
     Node Version:           9.9.0
     Serverless Version:     1.27.3

> npm list
└─┬ serverless-python-requirements@4.0.4
  ├── bluebird@3.5.1
  ├─┬ fs-extra@6.0.1
  │ ├── graceful-fs@4.1.11
  │ ├─┬ jsonfile@4.0.0
  │ │ └── graceful-fs@4.1.11 deduped
  │ └── universalify@0.1.1
  ├─┬ glob-all@3.1.0
  │ ├─┬ glob@7.1.2
  │ │ ├── fs.realpath@1.0.0
  │ │ ├─┬ inflight@1.0.6
  │ │ │ ├── once@1.4.0 deduped
  │ │ │ └── wrappy@1.0.2
  │ │ ├── inherits@2.0.3
  │ │ ├─┬ minimatch@3.0.4
  │ │ │ └─┬ brace-expansion@1.1.11
  │ │ │   ├── balanced-match@1.0.0
  │ │ │   └── concat-map@0.0.1
  │ │ ├─┬ once@1.4.0
  │ │ │ └── wrappy@1.0.2 deduped
  │ │ └── path-is-absolute@1.0.1
  │ └─┬ yargs@1.2.6
  │   └── minimist@0.1.0
  ├── is-wsl@1.1.0
  ├─┬ jszip@3.1.5
  │ ├── core-js@2.3.0
  │ ├── es6-promise@3.0.2
  │ ├─┬ lie@3.1.1
  │ │ └── immediate@3.0.6
  │ ├── pako@1.0.6
  │ └─┬ readable-stream@2.0.6
  │   ├── core-util-is@1.0.2
  │   ├── inherits@2.0.3 deduped
  │   ├── isarray@1.0.0
  │   ├── process-nextick-args@1.0.7
  │   ├── string_decoder@0.10.31
  │   └── util-deprecate@1.0.2
  ├── lodash.get@4.4.2
  ├── lodash.set@4.3.2
  ├── lodash.uniqby@4.7.0
  ├── lodash.values@4.3.0
  └─┬ rimraf@2.6.2
    └── glob@7.1.2 deduped

[grvhi]

To add to my last, I see the same error with 4.0.3

[grvhi]

It seems that I might actually be experiencing #161

The value of this.serverless.service.package.artifact || funcArtifact on line 122 in inject.js is undefined... I'm still digging around, but it seems to fit with the TypeError I'm seeing

[grvhi]

Perhaps unsurprisingly, this is a PEBCAK issue.... Turns out I was being over-zealous with my indentation of the functions block in my serverless.yml.

Apologies for all the noise!