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Cloud Foundry Go(Lang) Buildpack

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A Cloud Foundry buildpack for Go(lang) based apps.

Buildpack User Documentation

Official buildpack documentation can be found at go buildpack docs.

Building the Buildpack

To build this buildpack, run the following command from the buildpack's directory:

./scripts/package.sh --stack [cflinuxfs3 | cflinuxfs4] --version <version>

You can then find the built artifact in ./build/buildpack.zip.

Use in Cloud Foundry

Upload the buildpack to your Cloud Foundry and optionally specify it by name

cf create-buildpack [BUILDPACK_NAME] [BUILDPACK_ZIP_FILE_PATH] 1
cf push my_app [-b BUILDPACK_NAME]

Testing

Buildpacks use the Switchblade framework for running integration tests.

To test this buildpack, run the following command from the buildpack's directory:

  1. Run unit tests

    ./scripts/unit.sh
  2. Run integration tests

    ./scripts/integration.sh --github-token <token> --platform <cf|docker>

More information can be found on the switchblade repo.

Contributing

Find our guidelines here.

Help and Support

Join the #buildpacks channel in our Slack community if you need any further assistance.

Reporting Issues

Please fill out the issue template fully if you'd like to start an issue for the buildpack.

Acknowledgements

Inspired by the Heroku buildpack.

go-buildpack's People

Contributors

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go-buildpack's Issues

Something that just works for some v1.4

I'm trying to deploy the same go app to various versions of CF, and with that comes to constant deprecation of golang versions.

In PivotalCF, it bundles v208, which includes golang v1.4; but not v1.4.2.

-----> Resource https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz is not provided by this buildpack. Please upgrade your buildpack to receive the latest resources.
-----> Installing go1.4.2... done
-----> Running: godep go install -tags cloudfoundry ./...
godep: go exec: "go": executable file not found in $PATH

But if I code my Godeps/Godeps.json for v1.4 then it stops working in newer v220+ (Pivotal WS):

-----> Resource https://storage.googleapis.com/golang/go1.4.linux-amd64.tar.gz is not provided by this buildpack. Please upgrade your buildpack to receive the latest resources.
-----> Installing go1.4... Staging failed: Buildpack compilation step failed

How do I get one Golang app to run on different go-buildpack versions/different "latest release" Pivotal products?

bower 1.8.0 is a dependency of go-buildpack 1.8.20????

Hi,
my team would like to use go-buildpack 1.8.20 and to approve that I've to analyze it's source code and the code of its dependencies chain, to be sure that they don't have problematic licenses.

Now the analysis evidenced ### bower 1.8.0 as a dependency (along with all its dependencies chain) but I do not see any reference of bower 1.8.0 in the https://buildpacks.cloudfoundry.org/#/dependencies, where I see bower listed as secondary dependency only for Dotnet Core Buildpack v1.0.26 instead.

Is it bower 1.8.0 a dependency of go-buildpack 1.8.20 or not ?

Could you please clarify?

Many thanks.

Failed to execute buildpack test with cf cli version 6.26.Looks like machete issue, so proposing higher version of machete.

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

cf version 6.26.0+9c9a261.2017-04-06

What version of the buildpack you are using?

1.8.5 (which uses machete version 0.0.66)

If you were attempting to accomplish a task, what was it you were attempting to do?

Executed go-buildpack tests with the following command.
BUNDLE_GEMFILE=cf.Gemfile bundle exec buildpack-build

What did you expect to happen?

All tests pass.

What was the actual behavior?

Got following error during tests. the cause is cf cli changed the tag 'urls:' to 'routes:' half a year back .

1) CF Binary Buildpack deploying a Ruby script when specifying a buildpack deploys successfully
   Failure/Error: browser.visit_path('/')
   
   RuntimeError:
     Failed finding app URL
     response:
   
     Showing health and status for app webrick_app in org pivotal / space integration as admin...
   
     name:              webrick_app
     requested state:   started
     instances:         1/1
     usage:             1G x 1 instances
     routes:            webrick-app.bosh-lite.com
     last uploaded:     Thu 27 Jul 08:11:00 UTC 2017
     stack:             cflinuxfs2
     buildpack:         binary-test-buildpack
      
             state     since                  cpu    memory    disk      details
      #0   running   2017-07-27T08:11:14Z   0.0%   0 of 1G   0 of 1G   
      # ./cf_spec/integration/deploy_a_binary_app_spec.rb:19:in `block (4 levels) in <top (required)>'

Then I tried using mechete v 0.0.67 but faced another problem as following.

9) CF Go Buildpack with cached buildpack dependencies go 1.7 app with GO_INSTALL_TOOLS_IN_IMAGE running a task can find the specifed go in the container
   Failure/Error: before { skip_if_no_run_task_support_on_targeted_cf }
   
     Output was: api endpoint:   https://api.fastcloud.com
     api version:    2.77.0
    # ./cf_spec/spec_helper.rb:19:in `skip_if_no_run_task_support_on_targeted_cf'
    # ./cf_spec/integration/deploy_a_go_app_spec.rb:267:in `block (5 levels) in <top (required)>'
     can find the specifed go in the container (FAILED - 9)

Then I tried using mechete v 0.0.68 which looks good for most latest cf cli. Didn't try any further with higher versions of machete though.

Please confirm where necessary:

  • [*] I have included a log output
  • [*] My log includes an error message
  • [*] I have included steps for reproduction

"go" code in go-buildpack-v1.8.20: is there GPL code in it?

Hi, I've opened the issue at golang/go#26761 to ask if gccgo is included in GO compilers, and as you can see from answer in that issue it depends on the location of go download.

Could you please confirm that also the go levels included in go-buildpack-v1.8.20 do not include gccgo and/or other GPL code?

Thanks.

RFC: Drop support for golang 1.2.x and 1.3.x

Proposal to drop support for golang 1.2.x and 1.3.x

This issue describes a proposal to drop support for golang 1.2 and 1.3 from the Cloud Foundry go-buildpack. The community is asked to comment on this proposal.

The Challenge

Under our current, informal, "skinny buildpack" policy, we do not deliver binaries that are no longer supported upstream, for some definition of "supported". Generally, "supported" means "will receive security updates."

According to this thread on the golang developer mailing list, only the current major branch will receive security updates.

http://grokbase.com/t/gg/golang-nuts/159ar9tbed/go-nuts-end-of-life-support-for-go-1-3

This appears to be a "soft" policy, as 1.4.x received an update to 1.4.3 in September of this year to address a set of CVE vulnerabilities.

That said, it appears clear that 1.2 and 1.3 are no longer receiving security updates, and so could reasonably be declared "unsupported" by upstream.

The Proposal

We propose here simply to drop golang 1.2 and 1.3 support from the buildpack. Currently (v1.6.2 as of this writing on 2015-10-12), the buildpack vendors 1.2.1, 1.2.2, 1.3.2, and 1.3.3.

I'd like to implement this change no later than go-buildpack v1.6.4, or the end of October 2015.

How you can help

Please comment on this issue! If you're relying on golang 1.2 or 1.3 in production, we'd like to know how this is going to impact you. If you foresee challenges regarding upgrades to golang 1.4 or 1.5, we'd like to know.

Thank you!

NOTICE: Removal of Go 1.8.x and 1.9.x

The first release of the Go buildpack after March 1, 2019 will no longer include any versions of Go 1.8.x or 1.9.x. These Go versions are no longer supported upstream [1]. Please migrate your Go apps to supported versions of Go before that time.

Note: Unless you are manually specifying a version of Go for the buildpack to use, or you have customized your Go buildpack, no action is required.

[1] https://golang.org/doc/devel/release.html

CF unable to find local packages when using dep

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?
cf version 6.27.0+d26b32dcc.2017-06-08

What version of the buildpack you are using?
Go Buildpack version 1.8.18

If you were attempting to accomplish a task, what was it you were attempting to do?
Deploying app to CF

What did you expect to happen?
App should be deployed successfully and start

What was the actual behavior?
Deployment fails as local packages were not found. Issue is "dep" doesn't package local packages and so local packages are not found in /vendor dir

Please confirm where necessary:

  • I have included a log output
  • My log includes an error message
  • I have included steps for reproduction

logs:
main.go:10:2: cannot find package "github.com/coding-yogi/grpcserver/employee" in any of:
/tmp/gobuildpack.gopath689887214/.go/src/go18_dep/vendor/github.com/coding-yogi/grpcserver/employee (vendor tree)
/tmp/contents889922188/deps/0/go1.8.7/go/src/github.com/coding-yogi/grpcserver/employee (from $GOROOT)
/tmp/gobuildpack.gopath689887214/.go/src/github.com/coding-yogi/grpcserver/employee (from $GOPATH)
ERROR Unable to compile application: exit status 1
Failed to compile droplet: Failed to run finalize script: exit status 12
Exit status 223
Stopping instance 55e96c47-3ee4-4ade-bfe1-17ca966f3542
Destroying container
Successfully destroyed container

"github.com/coding-yogi/grpcserver/employee" is my local package

Issue depoying with godep save -copy=false

Godep without copy just has json and leaves it up to json to get packages. Seem be causing

2014-05-29T17:32:23.78-0400 [API]     OUT Updated app with guid f677273e-035a-435c-81ae-9b7d43f4d97d ({"state"=>"STARTED"})
2014-05-29T17:32:24.58-0400 [STG]     OUT -----> Downloaded app package (5.3M)
2014-05-29T17:32:31.30-0400 [STG]     OUT -----> Downloaded app buildpack cache (54M)
2014-05-29T17:32:31.56-0400 [STG]     ERR Cloning into '/tmp/buildpacks/heroku-buildpack-go'...
2014-05-29T17:32:33.78-0400 [STG]     OUT -----> Using go1.2.1
2014-05-29T17:32:33.80-0400 [STG]     OUT        Tired of waiting for bzr and hg?
2014-05-29T17:32:33.80-0400 [STG]     OUT        Try github.com/kr/godep for faster deploys.
2014-05-29T17:32:33.91-0400 [STG]     OUT        Installing Virtualenv...Staging failed: Buildpack compilation step failed
2014-05-29T17:32:34.10-0400 [API]     ERR Encountered error: Staging error: failed to stage application:
2014-05-29T17:32:34.10-0400 [API]     ERR Script exited with status 1

Not sure if it is CF problem?

go-buildpack incorrectly reports 'GB package manger' error just because of `src/` directory existing

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

v2.92.0 && v6.32

What version of the buildpack you are using?

Latest (1.8.17 at time of writing)

If you were attempting to accomplish a task, what was it you were attempting to do?

Deploy a Go-based application using a glide.yaml, but a src/ directory at the top-level

What did you expect to happen?

Successful deployment.

What was the actual behavior?

Similar to #51

!!    
!!    Error: Cloud Foundry does not support the GB package manager
!!    We currently only support the Godep and Glide package managers for go apps
!!    For support please file an issue: https://github.com/cloudfoundry/go-buildpack/issues
!!    

A quick glance at the SelectVendorTool() func in supply/supply.go#L78-L143 code shows an unusual ordering of the logic whereby it will error out as soon as it encounters a src/ directory (which it assumes to mean someone is attempting to use the old GB package manager) despite the existence of a glide.yaml, because it doesn't check that until later.

The fix for this behaviour would be to move the code around in SelectVendorTool such that glide.yaml/Godeps.json/Gopkg.toml are checked for up-front and used if available, and any other error reporting is performed afterwards.

Please confirm where necessary:

  • [ x ] I have included a log output
  • [ x ] My log includes an error message
  • [ x ] I have included steps for reproduction

Deprecated version of go (go1.5.3)

When using "go1.5" in my Godeps.json file, I see the following error while pushing my app:

!
 !     Deprecated version of go (go1.5.3)
 !     See https://devcenter.heroku.com/articles/go-support#go-versions for supported version information.
 !

However, the app still successfully deployed.

Don't require a vendoring "solution" if there's a vendor folder

What version of Cloud Foundry are you using?

PWS

What version of the buildpack you are using?

1.7.5

If you were attempting to accomplish a task, what was it you were attempting to do?

Push the cli-plugin-repo

What did you expect to happen?

That it wouldn't require Godeps, since it's got a vendor folder with all of its dependencies met AND the manifest.yml file used specifies GO15VENDOREXPERIMENT. I was working off information found in #25

What was the actual behavior?

Downloaded go_buildpack
Successfully created container
Downloading app package...
Downloaded app package (3.2M)
Staging...
-------> Buildpack version 1.7.5
file:///tmp/buildpacks/d70cf8c00babea7058f4ebb7870f57af/dependencies/https___pivotal-buildpacks.s3.amazonaws.com_concourse-binaries_godep_godep-v62-linux-x64.tgz
 !     https://github.com/cloudfoundry/go-buildpack
Failed to compile droplet
 !     Godep is required. For instructions:
Exit status 223
Staging failed: Exited with status 223

FAILED
BuildpackCompileFailed

Please confirm where necessary:

  • I have included a log output
  • My log includes an error message
  • I have included steps for reproduction

We are not using the GB Package manager but getting GBError()

We are using build pack 1.7

cf version 6.27.0+d26b32dcc.2017-06-08

I pushed my app to PCF and go back a GBError() but we are not using GB Package Manager.

It downloaded the buildpacks, staged, and then

[Buildpack]                      ERROR Detect failed with exception #<RuntimeError: Open JDK Like Memory Calculator error: undefined method `get' for nil:NilClass
Did you mean?  gets
              gem>
Open JDK Like Memory Calculator error: undefined method 'get' for nil:NilClass
Did you mean?  gets
              gem
-------> Buildpack version 1.7.18
file:///tmp/buildpacks/811f6eb18af9f6cd2a54e973c1358f3a/dependencies/https___buildpacks.cloudfoundry.org_dependencies_godep_godep-v78-linux-x64.tgz
file:///tmp/buildpacks/811f6eb18af9f6cd2a54e973c1358f3a/dependencies/https___buildpacks.cloudfoundry.org_dependencies_glide_glide-v0.12.3-linux-x64.tgz
-----> Using go1.7.5
!!    
!!    Error: Cloud Foundry does not support the GB package manager
!!    We currently only support the Godep and Glide package managers for go apps
!!    For support please file an issue: https://github.com/cloudfoundry/go-buildpack/issues
!!    
Failed to compile droplet
Exit status 223
Destroying container
Successfully destroyed container

FAILED
Error restarting application: BuildpackCompileFailed

go buildpack fails to compile apps with symlinks pointing to directories

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

$ cf curl /v2/info
{
   "min_cli_version": "6.23.0",
   "min_recommended_cli_version": "6.23.0",
   "api_version": "2.82.0",
}
$ cf version 
cf version 6.35.0+5c7de3e32.2018-03-0

What version of the buildpack you are using?

$ cf buildpacks

buildpack                         position   enabled   locked   filename
go_buildpack                      5          true      false    go_buildpack-cached-v1.8.13.zip

If you were attempting to accomplish a task, what was it you were attempting to do?
I was trying to push an go application to cloud foundry. (cf push)

What did you expect to happen?
I expected the go application to get staged and then start running on cloud foundry.

What was the actual behavior?
The application droplet failed to compile.

Staging app and tracing logs...
   Successfully created container
   Downloading app package...
   Downloaded app package (501B)
   Downloading build artifacts cache...
   Downloaded build artifacts cache (214B)
   Staging...
   -----> Go Buildpack version 1.8.13
   -----> Installing godep v79
          Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/45a95193113276fa9608ae86763bb2ea/godep-v79-linux-x64-9e37ce0f.tgz]
   -----> Installing glide v0.13.0
          Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/9aadbcd14ef274d70a911890fb994eb4/glide-v0.13.0-linux-x64-f13fe16b.tgz]
   -----> Installing dep v0.3.2
          Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/7d7962b05861e2669447f88006ec6c33/dep-v0.3.2-linux-x64-8910d5c1.tgz]
   -----> Installing go 1.8.5
          Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/9c844b3bb3486b958c4288482f3304e4/go1.8.5.linux-amd64-fe5c03fb.tar.gz]
          **ERROR** Unable to setup Go path: read /tmp/app/random-directory-symlink: is a directory
   Failed to compile droplet: Failed to run finalize script: exit status 12
   Exit status 223
   Staging failed: STG: Exited with status 223
   Stopping instance 441ca3dc-a404-4a01-b3d6-872ceab96a3e
   Destroying container
Error staging application: App staging failed in the buildpack compile phase
FAILED
~/cf-go-test $ cf logs cf-go-test --recent
   2018-03-13T13:08:50.61-0700 [STG/0] OUT Staging...
   2018-03-13T13:08:50.69-0700 [STG/0] OUT -----> Go Buildpack version 1.8.13
   2018-03-13T13:08:50.69-0700 [STG/0] OUT -----> Installing godep v79
   2018-03-13T13:08:50.69-0700 [STG/0] OUT        Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/45a95193113276fa9608ae86763bb2ea/godep-v79-linux-x64-9e37ce0f.tgz]
   2018-03-13T13:08:50.86-0700 [STG/0] OUT -----> Installing glide v0.13.0
   2018-03-13T13:08:50.86-0700 [STG/0] OUT        Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/9aadbcd14ef274d70a911890fb994eb4/glide-v0.13.0-linux-x64-f13fe16b.tgz]
   2018-03-13T13:08:51.05-0700 [STG/0] OUT -----> Installing dep v0.3.2
   2018-03-13T13:08:51.05-0700 [STG/0] OUT        Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/7d7962b05861e2669447f88006ec6c33/dep-v0.3.2-linux-x64-8910d5c1.tgz]
   2018-03-13T13:08:51.25-0700 [STG/0] OUT -----> Installing go 1.8.5
   2018-03-13T13:08:51.25-0700 [STG/0] OUT        Copy [/tmp/buildpacks/8718f8dff510f72e70afaa867b3064d5/dependencies/9c844b3bb3486b958c4288482f3304e4/go1.8.5.linux-amd64-fe5c03fb.tar.gz]
   2018-03-13T13:08:56.25-0700 [STG/0] OUT        **ERROR** Unable to setup Go path: read /tmp/app/random-directory-symlink: is a directory
   2018-03-13T13:08:56.25-0700 [STG/0] ERR Failed to compile droplet: Failed to run finalize script: exit status 12

Here's the sample application:

~/cf-go-test $ tree
.
├── main.go
├── manifest.yml
├── random-directory
└── random-directory-symlink -> random-directory/
~/cf-go-test $ cat main.go
package main

import "fmt"

func main() {
        fmt.Println("hi am a test app")
}
~/cf-go-test $ cat manifest.yml
---
applications:
- name: cf-go-test
  buildpack: go_buildpack
  env:
    GOPACKAGENAME: "github.com/cf-go-test"

Error while deploying go app with cf BP

HI,

I've tried to push very simple go application to cloud foundry and I got the following error

successfully created container
Downloading app package...
Downloaded app package (3.5K)
-----> Download go 1.9.1
-----> Running go build supply
-----> Go Buildpack version 1.8.13
-----> Installing godep v79
-----> Installing glide v0.13.0
       Download [https://buildpacks.cloudfoundry.org/dependencies/dep/dep-v0.3.2-linux-x64-8910d5c1.tgz]
       Download [https://buildpacks.cloudfoundry.org/dependencies/godep/godep-v79-linux-x64-9e37ce0f.tgz]
-----> Installing dep v0.3.2
-----> Installing go 1.8.5
       Download [https://buildpacks.cloudfoundry.org/dependencies/go/go1.8.5.linux-amd64-fe5c03fb.tar.gz]
       Download [https://buildpacks.cloudfoundry.org/dependencies/glide/glide-v0.13.0-linux-x64-f13fe16b.tgz]
-----> Running go build finalize
       environment variable to your app's package name
       **ERROR** To use go native vendoring set the $GOPACKAGENAME
       **ERROR** Unable to determine import path: GOPACKAGENAME unset

ive created this simple example which provide the same error, any idea?

package main

import (
	"net/http"
	"fmt"
	"github.com/gorilla/mux"
	"strings"
	"os"
	//"github.com/cloudfoundry-community/go-cfenv"
)

func main(){

	r := mux.NewRouter()

	http.HandleFunc("/auth", auth)

	http.Handle("/", r)
	ports := getPorts()
	http.ListenAndServe(ports, nil)
}

func getPorts() string {
	 port := os.Getenv("PORT")
	if port != "" {
		return port
	}else{
		return "8080"
	}
}



func auth(res http.ResponseWriter, req *http.Request) {
	//Set OS env
...
	

}

When I push my app I use cf push -b https://github.com/cloudfoundry/go-buildpack.git

the yaml is the following

applications:
- name: go_app
  buildpack: https://github.com/cloudfoundry/go-buildpack.git
  memory: 256M

Any idea what could be the problem ?

NOTICE: Default version of Go will change to 1.7.x after 2016-11-18

The version of Go in the Go Buildpack will change from version 1.6.3 to the latest 1.7.x version (currently 1.7.2) in the first release of the Go Buildpack after November 18, 2016. If you would like to continue using Go 1.6.3, please set the $GOVERSION environment variable in your app, or use your choice of Go dependency management utility to lock your version of Go to 1.6.3. For more information, refer to the documentation: http://docs.cloudfoundry.org/buildpacks/go/

Support dep

I'm currently using Glide to vendor my Go apps which works really well. In the near future, I'd like to switch to Dep. It would be awesome, if the Go buildpack supported Dep.

Documentation is incomplete

https://docs.cloudfoundry.org/buildpacks/go/index.html has the following documentation:

Pushing Apps with native Go vendoring
If you are using the native Go vendoring system, which packages all local dependencies in the vendor/ directory, you must specify your app’s package name in the GOPACKAGENAME environment variable. An example manifest.yml:

If you are using the vendor/ directory for dependencies, you can set the Go version with the GOVERSION environment variable.

Note An example manifest.yml: indicates an example will be specified, but then none is provided. Could this please be remedied?

Thanks!
Jean

Go vendor support

Hi there. We are using govendor as package management tool. We are wondering if you have any plans to support it? Currently we need to remove vendor/vendor.json file so the compilation step succeeds. Otherwise we get:

ERR  !     
ERR  !     Error: Cloud Foundry does not support the govendor package manager
ERR  !     We currently only support the 'Godep' package manager for go apps
ERR  !     For support please file an issue: https://github.com/cloudfoundry/go-buildpack/issues
ERR  !   

The message is very explicit. Could you tell us why the buildpack checks for vendor.json file? Would it be possible to omit this check and go with the native go vendoring instead?

I can see that buildpack from Heroku already has it covered:
https://github.com/heroku/heroku-buildpack-go/blob/master/bin/compile

RFC: Removing support for Go 1.4

Hello!

As the official Go release policy has deprecated support for Go 1.4, the Buildpacks team would like to propose the removal of Go 1.4 support from the Go buildpack as well.

If you have any questions or concerns regarding this change we would like to hear from you! Please respond no later than 4/25, when we plan to schedule work to make the change.

NOTICE: Default version of Go will change to 1.8.x after 2017-05-14

The default version of Go in the Go buildpack will change from the latest 1.7.x version (currently 1.7.5) to the latest 1.8.x version (currently 1.8.1) in the first release of the Go buildpack after May 14, 2017. If you would like to continue using Go 1.7.x, please set the $GOVERSION environment variable in your app, or use your choice of Go dependency management utility to lock your version of Go to 1.7.5. For more information, refer to the buildpack documentation: http://docs.cloudfoundry.org/buildpacks/go/

Inclusion of Glide in the Go buildpack

Prompted by Heroku's inclusion of the Glide [1] package manager for Golang we've taken an interest in supporting Glide officially in the Go buildpack. In order to understand priority and "sought afterness" of this functionality we'd like to understand if the community would value its addition.

If you find the inclusion of Glide in the Go buildpack compelling, please +1 or comment on this issue.

[1] - https://github.com/Masterminds/glide

Exceeding buildpack max_package_size

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

"api_version": "2.84.0",
cf version 6.26.0+9c9a261.2017-04-06

What version of the buildpack you are using?
v1.8.6, v1.8.5, v1.8.4

If you were attempting to accomplish a task, what was it you were attempting to do?
Execute cf push on an application (https://github.com/SUSE/stratos-ui, see https://github.com/SUSE/stratos-ui/tree/master/deploy/cloud-foundry for deploy instructions) that uses the multi-buildpack and the following individual buildpacks

buildpacks:
  - https://github.com/cloudfoundry/go-buildpack
  - https://github.com/cloudfoundry/nodejs-buildpack
  - https://github.com/cloudfoundry/binary-buildpack

What did you expect to happen?
Application push successfully completes

What was the actual behavior?
Application push fails due to 'Disk quota exceeded' errors, for example

2017-08-23T17:07:33.29+0100 [STG/0] ERR cp: cannot create directory ‘/tmp/contents284822944/app/node_modules/gulp-angular-templatecache’: Disk quota exceeded

This will occur at different times per attempt, it seems that max_package_size is being exceeded when it was not before. Unfortunately I can't supply which version of the multi-buildpack or individual buildpack which caused this. However I can say rolling back to ...

buildpacks:
  - https://github.com/cloudfoundry/go-buildpack#v1.8.4
  - https://github.com/cloudfoundry/nodejs-buildpack#v1.6.0
  - https://github.com/cloudfoundry/binary-buildpack

Shows the issue more succinctly. With the above configuration and the default max_package_size of 1GB cf push will always fail before any application specific code is executed.

The logs show that GO is downloaded three times

-----> Download go 1.8.1
-----> Running go build compile
-----> Multi Buildpack version 0.2.4
-----> Running buildpacks:
       https://github.com/cloudfoundry/go-buildpack#v1.8.4
       https://github.com/cloudfoundry/nodejs-buildpack#v1.6.0
       https://github.com/cloudfoundry/binary-buildpack
-----> Download go 1.8.3
-----> Running go build supply
-----> Go Buildpack version 1.8.4
-----> Installing godep v79
       Download [https://buildpacks.cloudfoundry.org/dependencies/godep/godep-v79-linux-x64-9e37ce0f.tgz]
-----> Installing glide v0.12.3
       Download [https://buildpacks.cloudfoundry.org/dependencies/glide/glide-v0.12.3-linux-x64-aa256363.tgz]
-----> Installing go 1.8.3
       Download [https://buildpacks.cloudfoundry.org/dependencies/go/go1.8.3.linux-amd64-32ec5ac6.tar.gz]
-----> Download go 1.8.1
-----> Running go build supply
-----> Nodejs Buildpack version 1.6.0
-----> Installing binaries
       engines.node (package.json): 6.x.x
       engines.npm (package.json): unspecified (use default)
-----> Installing node 6.11.0
       Download [https://buildpacks.cloudfoundry.org/dependencies/node/node-6.11.0-linux-x64-2c8100a9.tgz]
       Using default npm version: 3.10.10
-----> Installing yarn 0.24.6
       Download [https://buildpacks.cloudfoundry.org/dependencies/yarn/yarn-v0.24.6-156eb82f.tar.gz]
       Installed yarn 0.24.6
-----> Creating runtime environment
-------> Buildpack version 1.0.14
cp: error writing ‘/tmp/contents624226720/app/tmp/src/golang.org/x/net/http2/go18.go’: Disk quota exceeded

Once for the multi-buildpack, once for the go buildpack and then once again?

Either way it seems something has changed and there's now a much greater disk impact which is forcing the build to exceed the max (default) 1GB size limt.

My real question here is has anything changed buildpack that would facilitate an increase in size? Can anything be done to mitigate?

Please confirm where necessary:

  • I have included a log output
  • My log includes an error message
  • I have included steps for reproduction

Configuration Best Practices?

On 1.7.7 of the buildpack, we were trying to deploy a small go web server that needed configuration to vary across local, acceptance, and production environments.

While Golang itself doesn't provide any aid with this, the user experience of picking up and using this buildpack can be pretty awkward in terms of supplying configuration, as Procfiles only take one line of command line flags, and environment variables aren't great for things like lists...

It'd be great to have some documentation or example app surrounding best practices for loading configurations and how that interacts with manifests and Procfiles.

We've found that having a Procfile with:

web: app_name -c config.json

is very effective for supplying complex configurations.

This makes main looks something like:

package main
import (...)
var configFile = flag.String(
    "c",
    "",
    "path to config file",
)

func main() {
    port := os.Getenv("PORT")
    if port == "" {
        log.Fatal("$PORT must be set")
    }

    config, err := config.Parse(*configFile)
    if err != nil {
        log.Fatal("config file error: ", err)
    }

    handler := handlers.NewHandler(*config)
    http.HandleFunc("/", handler.Handle)

    fmt.Println("go-fetch-server.ready")
    log.Fatal(http.ListenAndServe(":"+port, nil))
}

Thanks,
Connor && Nima

go 1.6 causes: Deprecated version of go (go1.6)

 !     
 !     Deprecated version of go (go1.6)
 !     See https://devcenter.heroku.com/articles/go-support#go-versions for supported version information.
 !     
It looks like you're trying to use go 1.6.
The versions of go supported in this buildpack are:
- 1.5.3
- 1.5.2
- 1.4.3
- 1.4.2
If you need further help, start by reading: http://github.com/cloudfoundry/go-buildpack/releases.
Failed to compile droplet
Exit status 223

However, Go 1.6 is officially released and should be therefore supported.

Cannot push web app...

Hi, I am dealing with this second day and I cannot push go web app to CF.

main.go:

package main

import (
    "fmt"
    "net/http"
)

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":3000", nil)
}

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintln(w, "Hello!")
}

manifest.yml


---
applications:
- name: go-hello
  memory: 256M
  instances: 1

Procfile:

web: go-hello

I've also generated Godep folder using "godep save" command.
And here comes the logs:

OUT Updated app with guid b0b6d995-c8c5-495c-aea5-078fb9e66d8c ({"state"=>"STARTED"})
2016-01-29T11:10:17.94+0100 [STG/0]      OUT -----> Downloaded app package (4.0K)
2016-01-29T11:10:18.41+0100 [STG/0]      OUT -------> Buildpack version 1.7.0
2016-01-29T11:10:18.48+0100 [STG/0]      OUT file:///var/vcap/data/dea_next/admin_buildpacks/9c6d66fd-ceaf-4263-a259-6d0ba5a558a4_3b221ef8eb916eab42c8b0338ad8ee268a2535ad/dependencies/https___pivotal-buildpacks.s3.amazonaws.com_concourse-binaries_godep_godep-v17-linux-x64.tgz
2016-01-29T11:10:18.57+0100 [STG/0]      OUT -----> Checking Godeps/Godeps.json file.
2016-01-29T11:10:21.24+0100 [STG/0]      OUT -----> Installing go1.5... done
2016-01-29T11:10:21.24+0100 [STG/0]      OUT Downloaded [file:///var/vcap/data/dea_next/admin_buildpacks/9c6d66fd-ceaf-4263-a259-6d0ba5a558a4_3b221ef8eb916eab42c8b0338ad8ee268a2535ad/dependencies/https___storage.googleapis.com_golang_go1.5.linux-amd64.tar.gz]
2016-01-29T11:10:21.24+0100 [STG/0]      OUT -----> Running: godep go install -tags cloudfoundry ./...
2016-01-29T11:10:22.27+0100 [STG/0]      ERR 
2016-01-29T11:10:22.78+0100 [STG/0]      OUT -----> Uploading droplet (1.9M)
2016-01-29T11:10:38.65+0100 [DEA/0]      OUT Starting app instance (index 0) with guid b0b6d995-c8c5-495c-aea5-078fb9e66d8c
2016-01-29T11:11:39.82+0100 [DEA/0]      ERR Instance (index 0) failed to start accepting connections
2016-01-29T11:11:39.83+0100 [App/0]      OUT 
2016-01-29T11:11:39.83+0100 [App/0]      ERR 
2016-01-29T11:11:39.86+0100 [API/0]      OUT App instance exited with guid b0b6d995-c8c5-495c-aea5-078fb9e66d8c payload: {"cc_partition"=>"default", "droplet"=>"b0b6d995-c8c5-495c-aea5-078fb9e66d8c", "version"=>"f1e045da-fda0-4631-b28e-9ef48bacd565", "instance"=>"7e362f58af63411ca27ef8974279f9f9", "index"=>0, "reason"=>"CRASHED", "exit_status"=>-1, "exit_description"=>"failed to accept connections within health check timeout", "crash_timestamp"=>1454062299}

Can anyone tell me what I am doing wrong?
When I use "--no-route", application is running.

Unable to build go-buildpack from source code

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?
PCF 2.4.2

What version of the buildpack you are using?
Go Buildpack 1.8.36

If you were attempting to accomplish a task, what was it you were attempting to do?
Build cached go-buildpack from source code

What did you expect to happen?
To build go-buildpack zip file with cached binaries included

What was the actual behavior?
Run the below command according to readme.md:
(cd src/go/vendor/github.com/cloudfoundry/libbuildpack/packager/buildpack-packager && go install)

-bash: cd: src/go/vendor/github.com/cloudfoundry/libbuildpack/packager/buildpack-packager: No such file or directory

Then tried the followings:

  1. I think .envrc was wrong, so updated GOBIN=$(pwd)/bin
  2. go get github.com/google/subcommands
  3. go get github.com/cloudfoundry/libbuildpack
  4. (cd ~/go/src/github.com/cloudfoundry/libbuildpack/packager/buildpack-packager && go install)
  5. buildpack-packager build --cached=true -any-stack

Full error log prompted as below:
++ dirname scripts/build.sh

  • cd scripts/..
  • source .envrc
    +++ pwd
    ++ export GOBIN=/tmp/buildpack-packager755485061/bin
    ++ GOBIN=/tmp/buildpack-packager755485061/bin
    ++ export PATH= [...]
    ++ PATH=[...]
  • GOOS=linux
  • go build -mod=vendor '-ldflags=-s -w' -o bin/supply ./src/go/supply/cli
    flag provided but not defined: -mod
    usage: build [-o output] [-i] [build flags] [packages]

Build compiles the packages named by the import paths,
along with their dependencies, but it does not install the results.

If the arguments to build are a list of .go files, build treats
them as a list of source files specifying a single package.

When compiling a single main package, build writes
the resulting executable to an output file named after
the first source file ('go build ed.go rx.go' writes 'ed' or 'ed.exe')
or the source code directory ('go build unix/sam' writes 'sam' or 'sam.exe').
The '.exe' suffix is added when writing a Windows executable.

When compiling multiple packages or a single non-main package,
build compiles the packages but discards the resulting object,
serving only as a check that the packages can be built.

When compiling packages, build ignores files that end in '_test.go'.

The -o flag, only allowed when compiling a single package,
forces build to write the resulting executable or object
to the named output file, instead of the default behavior described
in the last two paragraphs.

The -i flag installs the packages that are dependencies of the target.

The build flags are shared by the build, clean, get, install, list, run,
and test commands:

    -a
            force rebuilding of packages that are already up-to-date.
    -n
            print the commands but do not run them.
    -p n
            the number of programs, such as build commands or
            test binaries, that can be run in parallel.
            The default is the number of CPUs available.
    -race
            enable data race detection.
            Supported only on linux/amd64, freebsd/amd64, darwin/amd64 and windows/amd64.
    -msan
            enable interoperation with memory sanitizer.
            Supported only on linux/amd64,
            and only with Clang/LLVM as the host C compiler.
    -v
            print the names of packages as they are compiled.
    -work
            print the name of the temporary work directory and
            do not delete it when exiting.
    -x
            print the commands.

    -asmflags 'flag list'
            arguments to pass on each go tool asm invocation.
    -buildmode mode
            build mode to use. See 'go help buildmode' for more.
    -compiler name
            name of compiler to use, as in runtime.Compiler (gccgo or gc).
    -gccgoflags 'arg list'
            arguments to pass on each gccgo compiler/linker invocation.
    -gcflags 'arg list'
            arguments to pass on each go tool compile invocation.
    -installsuffix suffix
            a suffix to use in the name of the package installation directory,
            in order to keep output separate from default builds.
            If using the -race flag, the install suffix is automatically set to race
            or, if set explicitly, has _race appended to it.  Likewise for the -msan
            flag.  Using a -buildmode option that requires non-default compile flags
            has a similar effect.
    -ldflags 'flag list'
            arguments to pass on each go tool link invocation.
    -linkshared
            link against shared libraries previously created with
            -buildmode=shared.
    -pkgdir dir
            install and load all packages from dir instead of the usual locations.
            For example, when building with a non-standard configuration,
            use -pkgdir to keep generated packages in a separate location.
    -tags 'tag list'
            a list of build tags to consider satisfied during the build.
            For more information about build tags, see the description of
            build constraints in the documentation for the go/build package.
    -toolexec 'cmd args'
            a program to use to invoke toolchain programs like vet and asm.
            For example, instead of running asm, the go command will run
            'cmd args /path/to/asm <arguments for asm>'.

The list flags accept a space-separated list of strings. To embed spaces
in an element in the list, surround it with either single or double quotes.

For more about specifying packages, see 'go help packages'.
For more about where packages and binaries are installed,
run 'go help gopath'.
For more about calling between Go and C/C++, run 'go help c'.

Note: Build adheres to certain conventions such as those described
by 'go help gopath'. Not all projects can follow these conventions,
however. Installations that have their own conventions or that use
a separate software build system may choose to use lower-level
invocations such as 'go tool compile' and 'go tool link' to avoid
some of the overheads and design decisions of the build tool.

See also: go install, go get, go clean.

2019/03/26 07:21:02 error while creating zipfile: exit status 2

Please confirm where necessary:

  • [X ] I have included a log output
  • My log includes an error message
  • I have included steps for reproduction

Vendoring support in 1.5+

Go as of 1.5 has built in support vendoring and no longer requires godep. It requires env variable to use in 1.5 since it is experimental (GO15VENDOREXPERIMENT=1). But for 1.6 it will be the default.

This script requires godep, which I think is no longer needed.

NOTICE: [go-buildpack] Default Go version will change from 1.8.x to 1.10.x after 2018-09-17

The default version of Go will be updated to 1.10.x in the first release after 2018-09-17.

Per the Go release website, Go versions that are two releases behind the latest major release are not supported[1]. Therefore we are giving users a 30 day notice before we change the default version of Go to the latest major version 1.10.x and remove Go versions 1.6.x and 1.7.x as they are no longer supported. If you are using 1.6.x and 1.7.x, please make plans to migrate your applications to 1.10.x in the next 30 days.

[1] https://golang.org/doc/devel/release.html

Unable to compile application using go.mod

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

{
   "name": "",
   "build": "",
   "support": "https://support.run.pivotal.io",
   "version": 0,
   "description": "Cloud Foundry sponsored by Pivotal",
   "authorization_endpoint": "https://login.run.pivotal.io",
   "token_endpoint": "https://uaa.run.pivotal.io",
   "min_cli_version": "6.22.0",
   "min_recommended_cli_version": "latest",
   "app_ssh_endpoint": "ssh.run.pivotal.io:2222",
   "app_ssh_oauth_client": "ssh-proxy",
   "doppler_logging_endpoint": "wss://doppler.run.pivotal.io:443",
   "api_version": "2.128.0",
   "osbapi_version": "2.14",
   "routing_endpoint": "https://api.run.pivotal.io/routing",
   "user": "6f8c083c-f3a0-4649-a602-7fd72a23e65c"
}
cf version 6.38.0+7ddf0aadd.2018-08-07

What version of the buildpack you are using?
1.8.29

What did you expect to happen?
I expected my app to start since it is running fine on my local machine. Using go modules with the following manifest:

applications:
- name: verne-server
  memory: 512M
  instances: 2
  buildpacks:
    - go_buildpack
  health-check-type: process
  stack: cflinuxfs3
  env:
    GOPACKAGENAME: github.com/kardolus/verne-server
    GOVERSION: go1.11.2

and go.mod

require (
	cloud.google.com/go v0.34.0
	firebase.google.com/go v3.5.0+incompatible
	github.com/google/martian v2.1.0+incompatible // indirect
	github.com/googleapis/gax-go v2.0.2+incompatible // indirect
	github.com/onsi/ginkgo v1.6.0
	github.com/onsi/gomega v1.4.2
	go.opencensus.io v0.18.0 // indirect
	golang.org/x/oauth2 v0.0.0-20181128211412-28207608b838 // indirect
	google.golang.org/api v0.0.0-20181127174356-0a71a4356c3f
	google.golang.org/genproto v0.0.0-20181127195345-31ac5d88444a // indirect
)

When I type cf push I expect the app to compile and run.

What was the actual behavior?
I'm getting an error staging the app

Staging app and tracing logs...
   Downloading go_buildpack...
   Downloaded go_buildpack (671M)
   Cell cd3a6a7e-8bb3-4631-a839-296095130133 creating container for instance 3591ff2d-bda4-48e8-bd7c-e32fdf238f27
   Cell cd3a6a7e-8bb3-4631-a839-296095130133 successfully created container for instance 3591ff2d-bda4-48e8-bd7c-e32fdf238f27
   Downloading app package...
   Downloaded app package (6.6M)
   -----> Go Buildpack version 1.8.29
   -----> Installing godep 80
          Copy [/tmp/buildpacks/a285b578e3a91d526b8be166619ca25e/dependencies/52a892f00e80ca4fdcf27d9828c7aba1/godep-v80-linux-x64-cflinuxfs3-b60ac947.tgz]
   -----> Installing glide 0.13.2
          Copy [/tmp/buildpacks/a285b578e3a91d526b8be166619ca25e/dependencies/fd4e8ddc56ffc364f5d99fa014efa3db/glide-v0.13.2-linux-x64-cflinuxfs3-b50997e2.tgz]
   -----> Installing dep 0.5.0
          Copy [/tmp/buildpacks/a285b578e3a91d526b8be166619ca25e/dependencies/a9e4336393d4ac6d278d03c358f68d0d/dep-v0.5.0-linux-x64-cflinuxfs3-f9b0e8ec.tgz]
   -----> Installing go 1.11.2
          Copy [/tmp/buildpacks/a285b578e3a91d526b8be166619ca25e/dependencies/a6d13b1335255925faa3d6c37811fead/go1.11.2.linux-amd64-cflinuxfs3-ea36bdde.tar.gz]
          **WARNING** Installing package '.' (default)
   -----> Running: go install -tags cloudfoundry -buildmode pie .
   verne/repository/repository.go:7:2: cannot find package "cloud.google.com/go/firestore" in any of:
   	/tmp/contents999807823/deps/0/go1.11.2/go/src/cloud.google.com/go/firestore (from $GOROOT)
   	/tmp/gobuildpack.gopath286624184/.go/src/cloud.google.com/go/firestore (from $GOPATH)
   verne/repository/repository.go:8:2: cannot find package "firebase.google.com/go" in any of:
   	/tmp/contents999807823/deps/0/go1.11.2/go/src/firebase.google.com/go (from $GOROOT)
   	/tmp/gobuildpack.gopath286624184/.go/src/firebase.google.com/go (from $GOPATH)
   verne/repository/repository.go:9:2: cannot find package "google.golang.org/api/iterator" in any of:
   	/tmp/contents999807823/deps/0/go1.11.2/go/src/google.golang.org/api/iterator (from $GOROOT)
   	/tmp/gobuildpack.gopath286624184/.go/src/google.golang.org/api/iterator (from $GOPATH)
   verne/repository/repository.go:10:2: cannot find package "google.golang.org/api/option" in any of:
   	/tmp/contents999807823/deps/0/go1.11.2/go/src/google.golang.org/api/option (from $GOROOT)
   	/tmp/gobuildpack.gopath286624184/.go/src/google.golang.org/api/option (from $GOPATH)
          **ERROR** Unable to compile application: exit status 1
   Failed to compile droplet: Failed to run finalize script: exit status 12
   Exit status 223
Error staging application: App staging failed in the buildpack compile phase

Please confirm where necessary:

  • [x ] I have included a log output
  • [x ] My log includes an error message
  • [ x] I have included steps for reproduction

Allow to build/run app with race detector enabled

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

2.98.0, 6.37.0

What version of the buildpack you are using?

master

If you were attempting to accomplish a task, what was it you were attempting to do?

Run my go application with the race detector on

What did you expect to happen?

The application runs with the race detector enabled

What was the actual behavior?

No documented way to run an app with the race detector enabled

Custom build command

Apologies if I missed something obvious but is there a way to execute a custom "go build" command. I want to be able to build on CloudFoundry with:

go build --ldflags '-extldflags'

Go Buildpack fails to locate package in sub directory

What version of Cloud Foundry and CF CLI are you using? (i.e. What is the output of running cf curl /v2/info && cf version?

"api_version": "2.126.0",
"osbapi_version": "2.14",
cf version 6.38.0+7ddf0aadd.2018-08-07

What version of the buildpack you are using?

Go Buildpack version 1.8.29

If you were attempting to accomplish a task, what was it you were attempting to do?

Push a go module with a sub-package

What did you expect to happen?

Successful compile and run

What was the actual behavior?

main.go:5:2: cannot find package "go-tick/util" in any of:
/tmp/gobuildpack.gopath149924292/.go/src/go-tick/main/vendor/go-tick/util (vendor tree)

I created a simple go module (1.11.2) using go mod init go-tick. I created a sub directory called 'util' which contains a common.go file using the package name "common". I import using the statement import "go-tick/util" which works fine locally. When pushing to cloud foundry, it neither fetches third party imports or resolves my local package like the go 1.11 build command does.

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