go: malformed module path "function/faas": missing dot in first path element

Vishal1297 commented 4 months ago

I'm new in Knative, and trying to run golang hello kn func example on my local.

After running the build command, I am getting a weird error - go: malformed module path "function/faas": missing dot in first path element

ENV

➜  kn-hello-func git:(main) ✗ kn version
Version:      v1.13.0
Build Date:   2024-01-24 16:48:59
Git Revision: 543522a3
Supported APIs:
* Serving
  - serving.knative.dev/v1 (knative-serving v1.13.0)
* Eventing
  - sources.knative.dev/v1 (knative-eventing v1.13.0)
  - eventing.knative.dev/v1 (knative-eventing v1.13.0)
➜  kn-hello-func git:(main) ✗ kn func version
v0.39.0-1-g4b6247d0

func.yaml

specVersion: 0.35.0
name: kn-hello-func
runtime: go
registry: docker.io/ivishalyadav
created: 2024-02-08T11:43:05.053846598+05:30

Logs

➜  kn-hello-func git:(main) ✗ kn func run --build --registry docker.io/ivishalyadav --verbose
Building function image
Pulling image ghcr.io/knative/builder-jammy-tiny:latest
latest: Pulling from knative/builder-jammy-tiny
Digest: sha256:21d4966de6cda91bda7bfcf691ec69f13c3f1ae1bf405e907d042a828bad7228
Status: Image is up to date for ghcr.io/knative/builder-jammy-tiny:latest
Selected run image index.docker.io/paketobuildpacks/run-jammy-tiny:latest
Pulling image index.docker.io/paketobuildpacks/run-jammy-tiny:latest
latest: Pulling from paketobuildpacks/run-jammy-tiny
Digest: sha256:2381406c9e5eebed510ab30350ecd2ef1ec43c38972e091a1493cb114ae9c5f7
Status: Image is up to date for paketobuildpacks/run-jammy-tiny:latest
Creating builder with the following buildpacks:
-> paketo-community/rust@0.35.0
-> paketo-buildpacks/procfile@5.6.4
-> paketo-buildpacks/syft@1.32.1
-> paketo-community/cargo@0.10.1
-> paketo-community/rust-dist@1.19.0
-> paketo-community/rustup@1.9.1
-> dev.knative-extensions.go@0.0.6
-> paketo-buildpacks/go@4.7.0
-> paketo-buildpacks/ca-certificates@3.6.7
-> paketo-buildpacks/environment-variables@4.5.6
-> paketo-buildpacks/git@1.0.8
-> paketo-buildpacks/go-build@2.2.0
-> paketo-buildpacks/go-dist@2.4.5
-> paketo-buildpacks/go-mod-vendor@1.0.28
-> paketo-buildpacks/image-labels@4.5.5
-> paketo-buildpacks/procfile@5.6.8
-> paketo-buildpacks/watchexec@2.8.7
-> paketo-buildpacks/java-native-image@8.26.0
-> paketo-buildpacks/bellsoft-liberica@10.4.5
-> paketo-buildpacks/ca-certificates@3.6.7
-> paketo-buildpacks/datadog@4.8.0
-> paketo-buildpacks/environment-variables@4.5.6
-> paketo-buildpacks/executable-jar@6.8.3
-> paketo-buildpacks/gradle@7.7.1
-> paketo-buildpacks/image-labels@4.5.5
-> paketo-buildpacks/leiningen@4.6.9
-> paketo-buildpacks/maven@6.15.12
-> paketo-buildpacks/native-image@5.12.7
-> paketo-buildpacks/procfile@5.6.8
-> paketo-buildpacks/quarkus@0.2.4
-> paketo-buildpacks/sbt@6.12.11
-> paketo-buildpacks/spring-boot@5.27.8
-> paketo-buildpacks/syft@1.42.0
-> paketo-buildpacks/upx@3.4.7
-> paketo-buildpacks/java@11.0.0
-> paketo-buildpacks/apache-tomcat@7.14.3
-> paketo-buildpacks/apache-tomee@1.8.0
-> paketo-buildpacks/azure-application-insights@5.17.3
-> paketo-buildpacks/bellsoft-liberica@10.5.2
-> paketo-buildpacks/ca-certificates@3.6.7
-> paketo-buildpacks/clojure-tools@2.8.14
-> paketo-buildpacks/datadog@5.1.0
-> paketo-buildpacks/dist-zip@5.6.8
-> paketo-buildpacks/encrypt-at-rest@4.5.13
-> paketo-buildpacks/environment-variables@4.5.6
-> paketo-buildpacks/executable-jar@6.8.3
-> paketo-buildpacks/google-stackdriver@8.0.4
-> paketo-buildpacks/gradle@7.7.1
-> paketo-buildpacks/image-labels@4.5.5
-> paketo-buildpacks/jattach@1.5.0
-> paketo-buildpacks/java-memory-assistant@1.4.9
-> paketo-buildpacks/leiningen@4.6.9
-> paketo-buildpacks/liberty@4.0.0
-> paketo-buildpacks/maven@6.15.12
-> paketo-buildpacks/node-engine@3.2.0
-> paketo-buildpacks/procfile@5.6.8
-> paketo-buildpacks/quarkus@0.2.4
-> paketo-buildpacks/sbt@6.12.11
-> paketo-buildpacks/spring-boot@5.27.8
-> paketo-buildpacks/syft@1.42.0
-> paketo-buildpacks/watchexec@2.8.7
-> paketo-buildpacks/yarn@1.3.0
-> paketo-buildpacks/procfile@5.6.8
Using build cache volume pack-cache-ivishalyadav_kn-hello-func_latest-f2dfafb0a74c.build
Running the creator on OS linux with:
Container Settings:
  Args: /cnb/lifecycle/creator -daemon -launch-cache /launch-cache -log-level debug -app /workspace -cache-dir /cache -run-image index.docker.io/paketobuildpacks/run-jammy-tiny:latest -gid 0 index.docker.io/ivishalyadav/kn-hello-func:latest
  System Envs: CNB_PLATFORM_API=0.12
  Image: pack.local/builder/68637771726376636c79:latest
  User: root
  Labels: map[author:pack]
Host Settings:
  Binds: pack-cache-ivishalyadav_kn-hello-func_latest-f2dfafb0a74c.build:/cache /var/run/docker.sock:/var/run/docker.sock pack-cache-ivishalyadav_kn-hello-func_latest-f2dfafb0a74c.launch:/launch-cache pack-layers-ufrumcxuxo:/layers pack-app-ojbqdmsbyc:/workspace    
  Network Mode: host
Starting creator...
Parsing inputs...
Ensuring privileges...
Executing command...
===> ANALYZING
Timer: Analyzer started at 2024-02-09T07:22:16Z
Found image with identifier "454e51cec4a97ed3b7afb80ad108a0f96790f0da38d23d6885702e491e5b3902"
Found image with identifier "36643d2c344602e38bc4dc2aa0b06d98cf1a5509abc828c7e41eb6ca1dc8526a"
Timer: Analyzer ran for 70.425µs and ended at 2024-02-09T07:22:16Z
Run image info in analyzed metadata is:
{"Reference":"36643d2c344602e38bc4dc2aa0b06d98cf1a5509abc828c7e41eb6ca1dc8526a","Image":"index.docker.io/paketobuildpacks/run-jammy-tiny:latest","Extend":false,"target":{"os":"linux","arch":"amd64"}}
===> DETECTING
Timer: Detector started at 2024-02-09T07:22:16Z
Checking for match against descriptor: {linux amd64  [{ubuntu 18.04}]}
======== Output: paketo-buildpacks/procfile@5.6.4 ========
SKIPPED: No procfile found from either source path or binding.
======== Results ========
pass: paketo-community/rustup@1.9.1
pass: paketo-community/rust-dist@1.19.0
pass: paketo-buildpacks/syft@1.32.1
fail: paketo-community/cargo@0.10.1
skip: paketo-buildpacks/procfile@5.6.4
======== Results ========
pass: paketo-buildpacks/go-dist@2.4.5
pass: dev.knative-extensions.go@0.0.6
Resolving plan... (try #1)
paketo-buildpacks/go-dist 2.4.5
dev.knative-extensions.go 0.0.6
Timer: Detector ran for 34.128778ms and ended at 2024-02-09T07:22:16Z
===> RESTORING
Timer: Restorer started at 2024-02-09T07:22:16Z
Restoring Layer Metadata
Reading buildpack directory: /layers/paketo-buildpacks_go-dist
Reading buildpack directory: /layers/dev.knative-extensions.go
Reading Buildpack Layers directory /layers
Reading buildpack directory: /layers/paketo-buildpacks_go-dist
Reading Buildpack Layers directory /layers
Reading buildpack directory: /layers/dev.knative-extensions.go
Timer: Restorer ran for 206.009µs and ended at 2024-02-09T07:22:16Z
===> BUILDING
Timer: Builder started at 2024-02-09T07:22:16Z
Running build for buildpack paketo-buildpacks/go-dist@2.4.5
Looking up buildpack
Finding plan
Creating plan directory
Preparing paths
Running build command
Paketo Buildpack for Go Distribution 2.4.5
  Resolving Go version
    Candidate version sources (in priority order):
      <unknown> -> ""

    Selected Go version (using <unknown>): 1.20.14

  Executing build process
    Installing Go 1.20.14
      Completed in 20.297s

  Generating SBOM for /layers/paketo-buildpacks_go-dist/go
      Completed in 23ms

Processing layers
Updating environment
Reading output files
Updating buildpack processes
Updating process list
Finished running build for buildpack paketo-buildpacks/go-dist@2.4.5
Running build for buildpack dev.knative-extensions.go@0.0.6
Looking up buildpack
Finding plan
Creating plan directory
Preparing paths
Running build command
> Knative Functions Go Buildpack
  Fetching framework dependencies
go: malformed module path "function/faas": missing dot in first path element
Timer: Builder ran for 20.357803646s and ended at 2024-02-09T07:22:37Z
ERROR: failed to build: exit status 1
Error: executing lifecycle: failed with status code: 51
Error: exit status 1

Sanket-0510 commented 4 months ago

@lkingland Can i look into this?

Vishal1297 commented 4 months ago

I forgot to mention that this is happening in WSL.

lkingland commented 4 months ago

@lkingland Can i look into this?

Yes, please. I see Matej already set you as assignee 👍

Sanket-0510 commented 4 months ago

After digging into this, I discovered that functions were initially referred to as "faas" in the Knative Func repository. However, everything was later renamed to "function" after pull request #210.
According to the error, the build process is attempting to execute code that requires a module named "function/faas". However, this path is missing a domain name and appears to be a source directory.

I'm not sure if there's any connection between these two points, but I couldn't find any explicit mention of the "function/faas" module in the Func repository.

Can someone elaborate over this?

matejvasek commented 4 months ago

@Sanket-0510 can you at least reproduce this issue? I do not recall running into this on Linux.

Sanket-0510 commented 4 months ago

@matejvasek I am on linux, I tried reproducing this error but on my side the function was build successfully, no such error. @Vishal1297 can you verify this again, are you still facing this issue?

Vishal1297 commented 4 months ago

@matejvasek I am on linux, I tried reproducing this error but on my side the function was build successfully, no such error. @Vishal1297 can you verify this again, are you still facing this issue?

I faced this issue only once and I got error after doing a change in go module name (github.com/Vishal1297/function)

Vishal1297 commented 4 months ago

Hello, I am able to reproduce this issue.

Steps To Reproduce [OS: Linux]

func create -l go kn-hello-func
Delete go.mod file
go mod init github.com/username/kn-hello-func (remote repo doesn't exists)
func build

drriguz commented 3 months ago

Hi @Vishal1297 @Sanket-0510 , I ran into the same error today. Is it solved? I tried latest func from main, but still got same issue.

kn version
Version:      v1.13.0
Build Date:   2024-01-24 16:48:59
Git Revision: 543522a3
Supported APIs:
* Serving
  - serving.knative.dev/v1 (knative-serving v1.13.0)
* Eventing
  - sources.knative.dev/v1 (knative-eventing v1.13.0)
  - eventing.knative.dev/v1 (knative-eventing v1.13.0)

func version
v0.40.0-57-g8f3f718a

go version
go version go1.22.0 linux/amd64

Logs:

➜  bing-search-tool git:(master) func run
Building function image
Still building
Still building
Yes, still building
Don't give up on me

2024/03/15 18:15:11.835122 DEBUG:  Pulling image ghcr.io/knative/builder-jammy-tiny:latest
latest: Pulling from knative/builder-jammy-tiny
Digest: sha256:1cb6a617b2f290cbc9ca1cb9c2c0504b896ddce88b8351aa4d8d71f0ba3551eb
Status: Image is up to date for ghcr.io/knative/builder-jammy-tiny:latest
2024/03/15 18:15:15.649143 DEBUG:  CheckReadAccess succeeded for the run image index.docker.io/paketobuildpacks/run-jammy-tiny:latest
2024/03/15 18:15:15.649157 DEBUG:  Selected run image index.docker.io/paketobuildpacks/run-jammy-tiny:latest
2024/03/15 18:15:15.649167 DEBUG:  Pulling image index.docker.io/paketobuildpacks/run-jammy-tiny:latest
latest: Pulling from paketobuildpacks/run-jammy-tiny
Digest: sha256:8972e2b07e13266bd51d04289e2454f8ab50d94d0a8b2bc6ea705931ddf5fe85
Status: Image is up to date for paketobuildpacks/run-jammy-tiny:latest
2024/03/15 18:15:17.994305 DEBUG:  Creating builder with the following buildpacks:
2024/03/15 18:15:17.994311 DEBUG:  -> paketo-community/rust@0.35.0
2024/03/15 18:15:17.994311 DEBUG:  -> paketo-buildpacks/procfile@5.6.4
2024/03/15 18:15:17.994312 DEBUG:  -> paketo-buildpacks/syft@1.32.1
2024/03/15 18:15:17.994313 DEBUG:  -> paketo-community/cargo@0.10.1
2024/03/15 18:15:17.994313 DEBUG:  -> paketo-community/rust-dist@1.19.0
2024/03/15 18:15:17.994314 DEBUG:  -> paketo-community/rustup@1.9.1
2024/03/15 18:15:17.994315 DEBUG:  -> dev.knative-extensions.go@0.0.6
2024/03/15 18:15:17.994315 DEBUG:  -> paketo-buildpacks/go@4.8.0
2024/03/15 18:15:17.994316 DEBUG:  -> paketo-buildpacks/ca-certificates@3.6.8
2024/03/15 18:15:17.994317 DEBUG:  -> paketo-buildpacks/environment-variables@4.5.7
2024/03/15 18:15:17.994317 DEBUG:  -> paketo-buildpacks/git@1.0.8
2024/03/15 18:15:17.994320 DEBUG:  -> paketo-buildpacks/go-build@2.2.1
2024/03/15 18:15:17.994321 DEBUG:  -> paketo-buildpacks/go-dist@2.5.0
2024/03/15 18:15:17.994322 DEBUG:  -> paketo-buildpacks/go-mod-vendor@1.0.29
2024/03/15 18:15:17.994322 DEBUG:  -> paketo-buildpacks/image-labels@4.5.6
2024/03/15 18:15:17.994323 DEBUG:  -> paketo-buildpacks/procfile@5.6.9
2024/03/15 18:15:17.994323 DEBUG:  -> paketo-buildpacks/watchexec@2.9.0
2024/03/15 18:15:17.994324 DEBUG:  -> paketo-buildpacks/java-native-image@9.0.0
2024/03/15 18:15:17.994325 DEBUG:  -> paketo-buildpacks/bellsoft-liberica@10.5.3
2024/03/15 18:15:17.994326 DEBUG:  -> paketo-buildpacks/ca-certificates@3.6.8
2024/03/15 18:15:17.994326 DEBUG:  -> paketo-buildpacks/datadog@5.4.0
2024/03/15 18:15:17.994327 DEBUG:  -> paketo-buildpacks/environment-variables@4.5.7
2024/03/15 18:15:17.994327 DEBUG:  -> paketo-buildpacks/executable-jar@6.8.4
2024/03/15 18:15:17.994331 DEBUG:  -> paketo-buildpacks/gradle@7.8.1
2024/03/15 18:15:17.994332 DEBUG:  -> paketo-buildpacks/image-labels@4.5.6
2024/03/15 18:15:17.994332 DEBUG:  -> paketo-buildpacks/leiningen@4.7.0
2024/03/15 18:15:17.994333 DEBUG:  -> paketo-buildpacks/maven@6.15.13
2024/03/15 18:15:17.994334 DEBUG:  -> paketo-buildpacks/native-image@5.12.8
2024/03/15 18:15:17.994334 DEBUG:  -> paketo-buildpacks/procfile@5.6.9
2024/03/15 18:15:17.994335 DEBUG:  -> paketo-buildpacks/quarkus@0.2.5
2024/03/15 18:15:17.994336 DEBUG:  -> paketo-buildpacks/sbt@6.12.12
2024/03/15 18:15:17.994336 DEBUG:  -> paketo-buildpacks/spring-boot@5.27.10
2024/03/15 18:15:17.994337 DEBUG:  -> paketo-buildpacks/syft@1.45.0
2024/03/15 18:15:17.994337 DEBUG:  -> paketo-buildpacks/upx@3.4.8
2024/03/15 18:15:17.994338 DEBUG:  -> paketo-buildpacks/java@12.0.0
2024/03/15 18:15:17.994339 DEBUG:  -> paketo-buildpacks/apache-tomcat@7.15.0
2024/03/15 18:15:17.994339 DEBUG:  -> paketo-buildpacks/apache-tomee@1.8.1
2024/03/15 18:15:17.994340 DEBUG:  -> paketo-buildpacks/azure-application-insights@5.17.4
2024/03/15 18:15:17.994341 DEBUG:  -> paketo-buildpacks/bellsoft-liberica@10.5.3
2024/03/15 18:15:17.994345 DEBUG:  -> paketo-buildpacks/ca-certificates@3.6.8
2024/03/15 18:15:17.994346 DEBUG:  -> paketo-buildpacks/clojure-tools@2.8.15
2024/03/15 18:15:17.994347 DEBUG:  -> paketo-buildpacks/datadog@5.4.0
2024/03/15 18:15:17.994347 DEBUG:  -> paketo-buildpacks/dist-zip@5.6.9
2024/03/15 18:15:17.994348 DEBUG:  -> paketo-buildpacks/encrypt-at-rest@4.5.15
2024/03/15 18:15:17.994349 DEBUG:  -> paketo-buildpacks/environment-variables@4.5.7
2024/03/15 18:15:17.994349 DEBUG:  -> paketo-buildpacks/executable-jar@6.8.4
2024/03/15 18:15:17.994350 DEBUG:  -> paketo-buildpacks/google-stackdriver@9.0.0
2024/03/15 18:15:17.994351 DEBUG:  -> paketo-buildpacks/gradle@7.8.1
2024/03/15 18:15:17.994351 DEBUG:  -> paketo-buildpacks/image-labels@4.5.6
2024/03/15 18:15:17.994352 DEBUG:  -> paketo-buildpacks/jattach@1.6.0
2024/03/15 18:15:17.994353 DEBUG:  -> paketo-buildpacks/java-memory-assistant@1.4.10
2024/03/15 18:15:17.994353 DEBUG:  -> paketo-buildpacks/leiningen@4.7.0
2024/03/15 18:15:17.994354 DEBUG:  -> paketo-buildpacks/liberty@4.0.1
2024/03/15 18:15:17.994354 DEBUG:  -> paketo-buildpacks/maven@6.15.13
2024/03/15 18:15:17.994355 DEBUG:  -> paketo-buildpacks/node-engine@3.2.2
2024/03/15 18:15:17.994356 DEBUG:  -> paketo-buildpacks/procfile@5.6.9
2024/03/15 18:15:17.994357 DEBUG:  -> paketo-buildpacks/quarkus@0.2.5
2024/03/15 18:15:17.994358 DEBUG:  -> paketo-buildpacks/sbt@6.12.12
2024/03/15 18:15:17.994358 DEBUG:  -> paketo-buildpacks/spring-boot@5.27.10
2024/03/15 18:15:17.994359 DEBUG:  -> paketo-buildpacks/syft@1.45.0
2024/03/15 18:15:17.994360 DEBUG:  -> paketo-buildpacks/watchexec@2.9.0
2024/03/15 18:15:17.994360 DEBUG:  -> paketo-buildpacks/yarn@1.3.2
2024/03/15 18:15:17.994361 DEBUG:  -> paketo-buildpacks/procfile@5.6.9
2024/03/15 18:15:18.233208 DEBUG:  Using build cache volume pack-cache-bing-search-tool_bing-search-tool_latest-0028ace14382.build
2024/03/15 18:15:18.233240 DEBUG:  Running the creator on OS linux from image pack.local/builder/6468686d71796a6e7277:latest with:
2024/03/15 18:15:18.233241 DEBUG:  Container Settings:
2024/03/15 18:15:18.233243 DEBUG:    Args: /cnb/lifecycle/creator -daemon -launch-cache /launch-cache -app /workspace -cache-dir /cache -run-image index.docker.io/paketobuildpacks/run-jammy-tiny:latest -gid 0 -uid 0 localhost:5000/bing-search-tool/bing-search-tool:latest
2024/03/15 18:15:18.233244 DEBUG:    System Envs: CNB_PLATFORM_API=0.12
2024/03/15 18:15:18.233245 DEBUG:    Image: pack.local/builder/6468686d71796a6e7277:latest
2024/03/15 18:15:18.233246 DEBUG:    User: root
2024/03/15 18:15:18.233250 DEBUG:    Labels: map[author:pack]
2024/03/15 18:15:18.233251 DEBUG:  Host Settings:
2024/03/15 18:15:18.233252 DEBUG:    Binds: pack-cache-bing-search-tool_bing-search-tool_latest-0028ace14382.build:/cache /var/run/docker.sock:/var/run/docker.sock pack-cache-bing-search-tool_bing-search-tool_latest-0028ace14382.launch:/launch-cache pack-layers-hpxfrmbgax:/layers pack-app-exoodiquvg:/workspace
2024/03/15 18:15:18.233253 DEBUG:    Network Mode: host
===> ANALYZING
Restoring data for SBOM from previous image
===> DETECTING
paketo-buildpacks/go-dist 2.5.0
dev.knative-extensions.go 0.0.6
===> RESTORING
Restoring metadata for "paketo-buildpacks/go-dist:go" from cache
Restoring metadata for "dev.knative-extensions.go:app" from app image
Restoring data for "paketo-buildpacks/go-dist:go" from cache
Restoring data for SBOM from cache
===> BUILDING
Paketo Buildpack for Go Distribution 2.5.0
  Resolving Go version
    Candidate version sources (in priority order):
      <unknown> -> ""

    Selected Go version (using <unknown>): 1.21.7

  Executing build process
    Installing Go 1.21.7
      Completed in 38.742s

  Generating SBOM for /layers/paketo-buildpacks_go-dist/go
      Completed in 0s

> Knative Functions Go Buildpack
  Fetching framework dependencies
go: malformed module path "function/faas": missing dot in first path element
ERROR: failed to build: exit status 1

Error: failed to build the function: executing lifecycle: failed with status code: 51

drriguz commented 3 months ago

Also forget to mention that I'm running on Linux too, with :

  bing-search-tool git:(master) lsb_release -a
No LSB modules are available.
Distributor ID: Linuxmint
Description:    Linux Mint 21.3
Release:    21.3
Codename:   virginia
➜  bing-search-tool git:(master) docker version
Client: Docker Engine - Community
 Version:           25.0.3
 API version:       1.44
 Go version:        go1.21.6
 Git commit:        4debf41
 Built:             Tue Feb  6 21:13:09 2024
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          25.0.3
  API version:      1.44 (minimum version 1.24)
  Go version:       go1.21.6
  Git commit:       f417435
  Built:            Tue Feb  6 21:13:09 2024
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.28
  GitCommit:        ae07eda36dd25f8a1b98dfbf587313b99c0190bb
 runc:
  Version:          1.1.12
  GitCommit:        v1.1.12-0-g51d5e94
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

Vishal1297 commented 3 months ago

Hi @drriguz,

For me I modified module name in go.mod file. Try deleting the go.mod & go.sum file.

Run following commands

go mod init function

go mod tidy

module function

go 1.21.4

drriguz commented 3 months ago

@Vishal1297 I think I find the cause: it must be module function in go.mod, if you change it to any other module name, you got this error. However, it seems to be a bug. @Sanket-0510 could you look at it again?

knative / func

go: malformed module path "function/faas": missing dot in first path element #2154

ENV

func.yaml

Logs