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chore: refactor container image import code to avoid panics (#518)

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Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
This commit is contained in:
Andrey Smirnov 2019-04-10 19:57:03 +03:00 committed by Andrew Rynhard
parent 7cb8485788
commit c24f1531cb
3 changed files with 38 additions and 28 deletions
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1
go.mod
View File

@ -27,6 +27,7 @@ require (
github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf // indirect
github.com/google/uuid v1.0.0
github.com/googleapis/gnostic v0.2.0 // indirect
github.com/hashicorp/go-multierror v1.0.0
github.com/hashicorp/golang-lru v0.5.0 // indirect
github.com/hpcloud/tail v1.0.0 // indirect
github.com/imdario/mergo v0.3.6 // indirect

4
go.sum
View File

@ -58,6 +58,10 @@ github.com/google/uuid v1.0.0 h1:b4Gk+7WdP/d3HZH8EJsZpvV7EtDOgaZLtnaNGIu1adA=
github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/googleapis/gnostic v0.2.0 h1:l6N3VoaVzTncYYW+9yOz2LJJammFZGBO13sqgEhpy9g=
github.com/googleapis/gnostic v0.2.0/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o=
github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCOH9wdo=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=

33
internal/app/init/pkg/system/runner/containerd/import.go
View File

@ -8,11 +8,12 @@ import (
"context"
"log"
"os"
"sync"
"github.com/containerd/containerd"
"github.com/containerd/containerd/defaults"
"github.com/containerd/containerd/namespaces"
multierror "github.com/hashicorp/go-multierror"
"github.com/pkg/errors"
"github.com/talos-systems/talos/internal/app/init/pkg/system/conditions"
)
@ -37,25 +38,24 @@ func Import(namespace string, reqs ...*ImportRequest) (err error) {
// nolint: errcheck
defer client.Close()
var wg sync.WaitGroup
wg.Add(len(reqs))
errCh := make(chan error)
var result *multierror.Error
for _, req := range reqs {
go func(wg *sync.WaitGroup, r *ImportRequest) {
defer wg.Done()
go func(errCh chan<- error, r *ImportRequest) {
errCh <- func() error {
tarball, err := os.Open(r.Path)
if err != nil {
panic(err)
return errors.Wrapf(err, "error opening %v", r.Path)
}
imgs, err := client.Import(ctx, tarball, r.Options...)
if err != nil {
panic(err)
return errors.Wrapf(err, "error importing %v", r.Path)
}
if err = tarball.Close(); err != nil {
panic(err)
return errors.Wrapf(err, "error closing %v", r.Path)
}
for _, img := range imgs {
@ -63,13 +63,18 @@ func Import(namespace string, reqs ...*ImportRequest) (err error) {
log.Printf("unpacking %s (%s)\n", img.Name, img.Target.Digest)
err = image.Unpack(ctx, containerd.DefaultSnapshotter)
if err != nil {
panic(err)
return errors.Wrapf(err, "error unpacking %v", img.Name)
}
}
}(&wg, req)
}
wg.Wait()
return nil
}()
}(errCh, req)
}
for range reqs {
result = multierror.Append(result, <-errCh)
}
return result.ErrorOrNil()
}