implement imagePull

Author: Aceralon

engine/virt/image.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"encoding/json"
 	"io"
+	"strings"
 
 	virttypes "github.com/projecteru2/libyavirt/types"
 
@@ -50,7 +51,21 @@ func (v *Virt) ImagesPrune(ctx context.Context) (err error) {
 
 // ImagePull pulls an image to local virt-node.
 func (v *Virt) ImagePull(ctx context.Context, ref string, all bool) (rc io.ReadCloser, err error) {
-	return
+	// ref is a simple image name without username for now
+	_, imgName, err := splitUserImage(ref)
+	if err != nil {
+		return nil, err
+	}
+
+	msg, err := v.client.PullImage(ctx, imgName, all)
+	if err != nil {
+		return nil, err
+	}
+
+	rc = io.NopCloser(strings.NewReader(msg))
+	defer rc.Close()
+
+	return rc, err
 }
 
 // ImagePush pushes to central image registry.

go.mod

@@ -32,7 +32,7 @@ require (
 	github.com/opencontainers/runc v1.0.0-rc95 // indirect
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/pkg/errors v0.9.1
-	github.com/projecteru2/libyavirt v0.0.0-20211213024339-7490368380c0
+	github.com/projecteru2/libyavirt v0.0.0-20211217082140-493b61aa9b0d
 	github.com/prometheus/client_golang v1.11.0
 	github.com/sanity-io/litter v1.5.1
 	github.com/sirupsen/logrus v1.7.0

go.sum

@@ -430,8 +430,8 @@ github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0/go.mod h1:iKH77
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
-github.com/projecteru2/libyavirt v0.0.0-20211213024339-7490368380c0 h1:Fzx/e/V/GoLdiiqBEhH/srG9003oOBBOgqWsRdWkv6Y=
-github.com/projecteru2/libyavirt v0.0.0-20211213024339-7490368380c0/go.mod h1:FOc+hWBMLsMrmx5p3/moizKeSomedZPNwB6LhS+kEnE=
+github.com/projecteru2/libyavirt v0.0.0-20211217082140-493b61aa9b0d h1:BMFqsvIB3nmK5l53nz8r2ndK8//T0njciu5nr/kj9A4=
+github.com/projecteru2/libyavirt v0.0.0-20211217082140-493b61aa9b0d/go.mod h1:FOc+hWBMLsMrmx5p3/moizKeSomedZPNwB6LhS+kEnE=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDft0ttaMvbicHlPoso=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=