Re: [libvirt-ci PATCH 2/2] containers: add a standard container for running go fmt

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On Mon, May 04, 2020 at 09:30:53AM +0200, Martin Kletzander wrote:
> On Fri, May 01, 2020 at 12:03:02PM +0100, Daniel P. Berrangé wrote:
> > On Fri, May 01, 2020 at 11:52:32AM +0100, Daniel P. Berrangé wrote:
> > > The "go fmt" code style checking tool is something we wish to run on all
> > > Go code, so it is useful to have a common container that can be used by
> > > all relevant projects.
> > > 
> > > Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
> > > ---
> > >  .gitlab-ci.yml               |  5 +++++
> > >  containers/go-fmt/Dockerfile |  9 +++++++++
> > >  containers/go-fmt/README.rst | 20 ++++++++++++++++++++
> > >  containers/go-fmt/go-fmt.sh  | 24 ++++++++++++++++++++++++
> > >  4 files changed, 58 insertions(+)
> > >  create mode 100644 containers/go-fmt/Dockerfile
> > >  create mode 100644 containers/go-fmt/README.rst
> > >  create mode 100755 containers/go-fmt/go-fmt.sh
> > > 
> > > diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
> > > index a1ac31a..080c8d1 100644
> > > --- a/.gitlab-ci.yml
> > > +++ b/.gitlab-ci.yml
> > > @@ -22,6 +22,11 @@ check-dco-container:
> > >    variables:
> > >      NAME: check-dco
> > > 
> > > +go-fmt-container:
> > > +  <<: *build_container_definition
> > > +  variables:
> > > +    NAME: go-fmt
> > > +
> > >  # Check that all commits are signed-off for the DCO. Skip
> > >  # on master branch and -maint branches, since we only need
> > >  # to test developer's personal branches.
> > > diff --git a/containers/go-fmt/Dockerfile b/containers/go-fmt/Dockerfile
> > > new file mode 100644
> > > index 0000000..9079fea
> > > --- /dev/null
> > > +++ b/containers/go-fmt/Dockerfile
> > > @@ -0,0 +1,9 @@
> > > +FROM golang:1.14
> > > +
> > > +RUN export DEBIAN_FRONTEND=noninteractive && \
> > > +    apt-get update && \
> > > +    apt-get install --no-install-recommends -y \
> > > +            diffstat && \
> > > +    apt-get autoclean -y
> > > +
> > > +COPY go-fmt.sh /go-fmt
> > > diff --git a/containers/go-fmt/README.rst b/containers/go-fmt/README.rst
> > > new file mode 100644
> > > index 0000000..0af6998
> > > --- /dev/null
> > > +++ b/containers/go-fmt/README.rst
> > > @@ -0,0 +1,20 @@
> > > +=============================================
> > > +Container for running go fmt code style check
> > > +=============================================
> > > +
> > > +This container provides a simple way to invoke ``go fmt`` to validate code
> > > +style across a Golang codebase. It should be integrated into a CI by adding
> > > +the following snippet to ``.gitlab-ci.yml``
> > > +
> > > +::
> > > +
> > > +   go-fmt:
> > > +     stage: prebuild
> > > +     image: registry.gitlab.com/libvirt/libvirt-ci/go-fmt:master
> > > +     script:
> > > +       - /go-fmt
> > > +     artifacts:
> > > +       paths:
> > > +         - go-fmt.patch
> > > +       expire_in: 1 week
> > > +       when: on_failure
> > > diff --git a/containers/go-fmt/go-fmt.sh b/containers/go-fmt/go-fmt.sh
> > > new file mode 100755
> > > index 0000000..9fda79d
> > > --- /dev/null
> > > +++ b/containers/go-fmt/go-fmt.sh
> > > @@ -0,0 +1,24 @@
> > > +#!/bin/sh
> > > +
> > > +GOFMT=$(go env GOROOT)/bin/gofmt
> > > +
> > > +find -name '*.go' | xargs $GOFMT -d -e > go-fmt.patch
> > > +
> > > +if test -n go-fmt.patch
> > 
> > This was supposed to be "-z" not "-n" but I forgot to commit a chunk
> > 
> 
> You mean `-s`, right?  Because `-z` and `-n` operate on strings, not filenames.

Sigh. Yes.  Non-zero file size is what it is supposed to be checking.

> 
> > > +then
> > > +    echo
> > > +    echo "❌ ERROR: some files failed go fmt code style check"
> > > +    echo
> > > +    diffstat go-fmt.patch
> > > +    echo
> > > +    echo "See the go-fmt patch artifact for full details of mistakes."
> > > +    echo
> > > +    echo "For guidance on how to configure Emacs or Vim to automatically"
> > > +    echo "run go fmt when saving files read"
> > > +    echo
> > > +    echo "     https://blog.golang.org/gofmt";
> > > +    echo
> > > +    exit 1
> > > +fi
> > > +
> > > +echo "✔ OK: all files passed go fmt code style check"
> > > --
> > > 2.25.4
> > > 
> > 
> > Regards,
> > Daniel
> > -- 
> > |: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
> > |: https://libvirt.org         -o-            https://fstop138.berrange.com :|
> > |: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|
> > 



Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|





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