Add isogen executor

Relates-To: #344
Change-Id: I1b9b04f1f723d8df6d6aad63b64a917566b22176

manifests/function/ephemeral/image_configuration.yaml

@@ -1,7 +1,7 @@
 apiVersion: airshipit.org/v1alpha1
 kind: ImageConfiguration
 metadata:
-  name: default
+  name: isogen
   labels:
     airshipit.org/deploy-k8s: "false"
 builder:

pkg/bootstrap/isogen/command.go

@@ -21,7 +21,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	api "opendev.org/airship/airshipctl/pkg/api/v1alpha1"
+	"opendev.org/airship/airshipctl/pkg/api/v1alpha1"
 	"opendev.org/airship/airshipctl/pkg/bootstrap/cloudinit"
 	"opendev.org/airship/airshipctl/pkg/config"
 	"opendev.org/airship/airshipctl/pkg/container"
@@ -35,6 +35,8 @@ const (
 )
 
 // GenerateBootstrapIso will generate data for cloud init and start ISO builder container
+// TODO (vkuzmin): Remove this public function and move another functions
+// to the executor module when the phases will be ready
 func GenerateBootstrapIso(cfgFactory config.Factory) error {
 	ctx := context.Background()
 
@@ -52,8 +54,8 @@ func GenerateBootstrapIso(cfgFactory config.Factory) error {
 		return err
 	}
 
-	imageConfiguration := &api.ImageConfiguration{}
-	selector, err := document.NewSelector().ByObject(imageConfiguration, api.Scheme)
+	imageConfiguration := &v1alpha1.ImageConfiguration{}
+	selector, err := document.NewSelector().ByObject(imageConfiguration, v1alpha1.Scheme)
 	if err != nil {
 		return err
 	}
@@ -62,7 +64,7 @@ func GenerateBootstrapIso(cfgFactory config.Factory) error {
 		return err
 	}
 
-	err = doc.ToAPIObject(imageConfiguration, api.Scheme)
+	err = doc.ToAPIObject(imageConfiguration, v1alpha1.Scheme)
 	if err != nil {
 		return err
 	}
@@ -78,7 +80,7 @@ func GenerateBootstrapIso(cfgFactory config.Factory) error {
 		return err
 	}
 
-	err = generateBootstrapIso(docBundle, builder, doc, imageConfiguration, log.DebugEnabled())
+	err = createBootstrapIso(docBundle, builder, doc, imageConfiguration, log.DebugEnabled())
 	if err != nil {
 		return err
 	}
@@ -86,7 +88,7 @@ func GenerateBootstrapIso(cfgFactory config.Factory) error {
 	return verifyArtifacts(imageConfiguration)
 }
 
-func verifyInputs(cfg *api.ImageConfiguration) error {
+func verifyInputs(cfg *v1alpha1.ImageConfiguration) error {
 	if cfg.Container.Volume == "" {
 		return config.ErrMissingConfig{
 			What: "Must specify volume bind for ISO builder container",
@@ -112,7 +114,7 @@ func verifyInputs(cfg *api.ImageConfiguration) error {
 }
 
 func getContainerCfg(
-	cfg *api.ImageConfiguration,
+	cfg *v1alpha1.ImageConfiguration,
 	builderCfgYaml []byte,
 	userData []byte,
 	netConf []byte,
@@ -126,18 +128,18 @@ func getContainerCfg(
 	return fls
 }
 
-func verifyArtifacts(cfg *api.ImageConfiguration) error {
+func verifyArtifacts(cfg *v1alpha1.ImageConfiguration) error {
 	hostVol := strings.Split(cfg.Container.Volume, ":")[0]
 	metadataPath := filepath.Join(hostVol, cfg.Builder.OutputMetadataFileName)
 	_, err := os.Stat(metadataPath)
 	return err
 }
 
-func generateBootstrapIso(
+func createBootstrapIso(
 	docBundle document.Bundle,
 	builder container.Container,
 	doc document.Document,
-	cfg *api.ImageConfiguration,
+	cfg *v1alpha1.ImageConfiguration,
 	debug bool,
 ) error {
 	cntVol := strings.Split(cfg.Container.Volume, ":")[1]

pkg/bootstrap/isogen/command_test.go

@@ -148,7 +148,7 @@ func TestBootstrapIso(t *testing.T) {
 	for _, tt := range tests {
 		outBuf := &bytes.Buffer{}
 		log.Init(tt.debug, outBuf)
-		actualErr := generateBootstrapIso(bundle, tt.builder, tt.doc, tt.cfg, tt.debug)
+		actualErr := createBootstrapIso(bundle, tt.builder, tt.doc, tt.cfg, tt.debug)
 		actualOut := outBuf.String()
 
 		for _, line := range tt.expectedOut {

pkg/bootstrap/isogen/executor.go

@@ -0,0 +1,143 @@
+/*
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package isogen
+
+import (
+	"context"
+	"io"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+
+	"opendev.org/airship/airshipctl/pkg/api/v1alpha1"
+	"opendev.org/airship/airshipctl/pkg/container"
+	"opendev.org/airship/airshipctl/pkg/document"
+	"opendev.org/airship/airshipctl/pkg/errors"
+	"opendev.org/airship/airshipctl/pkg/events"
+	"opendev.org/airship/airshipctl/pkg/log"
+	"opendev.org/airship/airshipctl/pkg/phase/ifc"
+)
+
+var _ ifc.Executor = &Executor{}
+
+// Executor contains resources for isogen executor
+type Executor struct {
+	ExecutorBundle   document.Bundle
+	ExecutorDocument document.Document
+
+	imgConf *v1alpha1.ImageConfiguration
+	builder container.Container
+}
+
+// RegisterExecutor adds executor to phase executor registry
+func RegisterExecutor(registry map[schema.GroupVersionKind]ifc.ExecutorFactory) error {
+	obj := &v1alpha1.ImageConfiguration{}
+	gvks, _, err := v1alpha1.Scheme.ObjectKinds(obj)
+	if err != nil {
+		return err
+	}
+	registry[gvks[0]] = NewExecutor
+	return nil
+}
+
+// NewExecutor creates instance of phase executor
+func NewExecutor(cfg ifc.ExecutorConfig) (ifc.Executor, error) {
+	apiObj := &v1alpha1.ImageConfiguration{}
+	err := cfg.ExecutorDocument.ToAPIObject(apiObj, v1alpha1.Scheme)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Executor{
+		ExecutorBundle:   cfg.ExecutorBundle,
+		ExecutorDocument: cfg.ExecutorDocument,
+		imgConf:          apiObj,
+	}, nil
+}
+
+// Run isogen as a phase runner
+func (c *Executor) Run(evtCh chan events.Event, opts ifc.RunOptions) {
+	defer close(evtCh)
+
+	evtCh <- events.Event{
+		IsogenEvent: events.IsogenEvent{
+			Operation: events.IsogenStart,
+		},
+	}
+
+	if opts.DryRun {
+		log.Print("command isogen will be executed")
+		evtCh <- events.Event{
+			IsogenEvent: events.IsogenEvent{
+				Operation: events.IsogenEnd,
+			},
+		}
+		return
+	}
+
+	if c.builder == nil {
+		ctx := context.Background()
+		builder, err := container.NewContainer(
+			&ctx,
+			c.imgConf.Container.ContainerRuntime,
+			c.imgConf.Container.Image)
+		c.builder = builder
+		if err != nil {
+			handleError(evtCh, err)
+			return
+		}
+	}
+
+	err := createBootstrapIso(c.ExecutorBundle, c.builder, c.ExecutorDocument, c.imgConf, log.DebugEnabled())
+	if err != nil {
+		handleError(evtCh, err)
+		return
+	}
+
+	evtCh <- events.Event{
+		IsogenEvent: events.IsogenEvent{
+			Operation: events.IsogenValidation,
+		},
+	}
+	err = verifyArtifacts(c.imgConf)
+	if err != nil {
+		handleError(evtCh, err)
+		return
+	}
+
+	evtCh <- events.Event{
+		IsogenEvent: events.IsogenEvent{
+			Operation: events.IsogenEnd,
+		},
+	}
+}
+
+// Validate executor configuration and documents
+func (c *Executor) Validate() error {
+	return errors.ErrNotImplemented{}
+}
+
+// Render executor documents
+func (c *Executor) Render(_ io.Writer, _ ifc.RenderOptions) error {
+	return errors.ErrNotImplemented{}
+}
+
+func handleError(ch chan<- events.Event, err error) {
+	ch <- events.Event{
+		Type: events.ErrorType,
+		ErrorEvent: events.ErrorEvent{
+			Error: err,
+		},
+	}
+}

pkg/bootstrap/isogen/executor_test.go

@@ -0,0 +1,177 @@
+/*
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package isogen
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+
+	"opendev.org/airship/airshipctl/pkg/api/v1alpha1"
+	"opendev.org/airship/airshipctl/pkg/container"
+	"opendev.org/airship/airshipctl/pkg/document"
+	"opendev.org/airship/airshipctl/pkg/events"
+	"opendev.org/airship/airshipctl/pkg/phase/ifc"
+	"opendev.org/airship/airshipctl/testutil"
+)
+
+var (
+	executorDoc = `
+apiVersion: airshipit.org/v1alpha1
+kind: ImageConfiguration
+metadata:
+  name: isogen
+  labels:
+    airshipit.org/deploy-k8s: "false"
+builder:
+  networkConfigFileName: network-config
+  outputMetadataFileName: output-metadata.yaml
+  userDataFileName: user-data
+container:
+  containerRuntime: docker
+  image: quay.io/airshipit/isogen:latest-ubuntu_focal
+  volume: /srv/iso:/config`
+	executorBundlePath = "testdata/primary/site/test-site/ephemeral/bootstrap"
+)
+
+func TestRegisterExecutor(t *testing.T) {
+	registry := make(map[schema.GroupVersionKind]ifc.ExecutorFactory)
+	expectedGVK := schema.GroupVersionKind{
+		Group:   "airshipit.org",
+		Version: "v1alpha1",
+		Kind:    "ImageConfiguration",
+	}
+	err := RegisterExecutor(registry)
+	require.NoError(t, err)
+
+	_, found := registry[expectedGVK]
+	assert.True(t, found)
+}
+
+func TestNewExecutor(t *testing.T) {
+	execDoc, err := document.NewDocumentFromBytes([]byte(executorDoc))
+	require.NoError(t, err)
+	bundle, err := document.NewBundleByPath(executorBundlePath)
+	require.NoError(t, err)
+	_, err = NewExecutor(ifc.ExecutorConfig{
+		ExecutorDocument: execDoc,
+		ExecutorBundle:   bundle})
+	require.NoError(t, err)
+}
+
+func TestExecutorRun(t *testing.T) {
+	bundle, err := document.NewBundleByPath(executorBundlePath)
+	require.NoError(t, err, "Building Bundle Failed")
+
+	tempVol, cleanup := testutil.TempDir(t, "bootstrap-test")
+	defer cleanup(t)
+
+	volBind := tempVol + ":/dst"
+	testCfg := &v1alpha1.ImageConfiguration{
+		Container: &v1alpha1.Container{
+			Volume:           volBind,
+			ContainerRuntime: "docker",
+		},
+		Builder: &v1alpha1.Builder{
+			UserDataFileName:      "user-data",
+			NetworkConfigFileName: "net-conf",
+		},
+	}
+	testDoc := &MockDocument{
+		MockAsYAML: func() ([]byte, error) { return []byte("TESTDOC"), nil },
+	}
+
+	testCases := []struct {
+		name        string
+		builder     *mockContainer
+		expectedEvt []events.Event
+	}{
+		{
+			name: "Run isogen successefully",
+			builder: &mockContainer{
+				runCommand:  func() error { return nil },
+				getID:       func() string { return "TESTID" },
+				rmContainer: func() error { return nil },
+			},
+			expectedEvt: []events.Event{
+				{
+					IsogenEvent: events.IsogenEvent{
+						Operation: events.IsogenStart,
+					},
+				},
+				{
+					IsogenEvent: events.IsogenEvent{
+						Operation: events.IsogenValidation,
+					},
+				},
+				{
+					IsogenEvent: events.IsogenEvent{
+						Operation: events.IsogenEnd,
+					},
+				},
+			},
+		},
+		{
+			name: "Fail on container command",
+			builder: &mockContainer{
+				runCommand: func() error {
+					return container.ErrRunContainerCommand{Cmd: "super fail"}
+				},
+				getID:       func() string { return "TESTID" },
+				rmContainer: func() error { return nil },
+			},
+
+			expectedEvt: []events.Event{
+				{
+					IsogenEvent: events.IsogenEvent{
+						Operation: events.IsogenStart,
+					},
+				},
+				wrapError(container.ErrRunContainerCommand{Cmd: "super fail"}),
+			},
+		},
+	}
+	for _, test := range testCases {
+		tt := test
+		t.Run(tt.name, func(t *testing.T) {
+			executor := &Executor{
+				ExecutorDocument: testDoc,
+				ExecutorBundle:   bundle,
+				imgConf:          testCfg,
+				builder:          tt.builder,
+			}
+			require.NoError(t, err)
+			ch := make(chan events.Event)
+			go executor.Run(ch, ifc.RunOptions{})
+			var actualEvt []events.Event
+			for evt := range ch {
+				actualEvt = append(actualEvt, evt)
+			}
+			assert.Equal(t, tt.expectedEvt, actualEvt)
+		})
+	}
+}
+
+func wrapError(err error) events.Event {
+	return events.Event{
+		Type: events.ErrorType,
+		ErrorEvent: events.ErrorEvent{
+			Error: err,
+		},
+	}
+}

pkg/events/events.go

@@ -33,6 +33,8 @@ const (
 	WaitType
 	// ClusterctlType event emitted by Clusterctl executor
 	ClusterctlType
+	// IsogenType event emitted by Isogen executor
+	IsogenType
 )
 
 // Event holds all possible events that can be produced by airship
@@ -42,6 +44,7 @@ type Event struct {
 	ErrorEvent        ErrorEvent
 	StatusPollerEvent statuspollerevent.Event
 	ClusterctlEvent   ClusterctlEvent
+	IsogenEvent       IsogenEvent
 }
 
 // ErrorEvent is produced when error is encountered
@@ -63,7 +66,24 @@ const (
 	ClusterctlMoveEnd
 )
 
-// ClusterctlEvent is prodiced by clusterctl executor
+// ClusterctlEvent is produced by clusterctl executor
 type ClusterctlEvent struct {
 	Operation ClusterctlOperation
 }
+
+// IsogenOperation type
+type IsogenOperation int
+
+const (
+	// IsogenStart operation
+	IsogenStart IsogenOperation = iota
+	// IsogenValidation opearation
+	IsogenValidation
+	// IsogenEnd operation
+	IsogenEnd
+)
+
+// IsogenEvent needs to to track events in isogen executor
+type IsogenEvent struct {
+	Operation IsogenOperation
+}

pkg/phase/client.go

@@ -20,6 +20,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 
 	"opendev.org/airship/airshipctl/pkg/api/v1alpha1"
+	"opendev.org/airship/airshipctl/pkg/bootstrap/isogen"
 	clusterctl "opendev.org/airship/airshipctl/pkg/clusterctl/client"
 	"opendev.org/airship/airshipctl/pkg/document"
 	"opendev.org/airship/airshipctl/pkg/events"
@@ -43,6 +44,9 @@ func DefaultExecutorRegistry() map[schema.GroupVersionKind]ifc.ExecutorFactory {
 	if err := applier.RegisterExecutor(execMap); err != nil {
 		log.Fatal(ErrExecutorRegistration{ExecutorName: "kubernetes-apply", Err: err})
 	}
+	if err := isogen.RegisterExecutor(execMap); err != nil {
+		log.Fatal(ErrExecutorRegistration{ExecutorName: "isogen", Err: err})
+	}
 	return execMap
 }