Add conversion for v1 Task

This commit adds conversion functions between v1beta1 and v1 Task.
It does not handle fields deprecated in v1beta1 that will not be present in v1.
It implements ConvertTo and ConvertFrom for v1beta1 Task, and leaves
these functions unimplemented for v1 Task, since it is the highest known version.

Conversions for all types are basically deep copies, rather than using the same struct
definition for both API versions. This will allow us to iterate on v1 without making additional
changes to v1beta1, after v1 is the stored version.

pkg/apis/pipeline/v1/task_conversion.go

@@ -0,0 +1,39 @@
+/*
+Copyright 2022 The Tekton Authors
+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
+    http://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 v1
+
+import (
+	"context"
+	"fmt"
+
+	"knative.dev/pkg/apis"
+)
+
+var _ apis.Convertible = (*Task)(nil)
+
+// ConvertTo implements apis.Convertible
+func (t *Task) ConvertTo(ctx context.Context, sink apis.Convertible) error {
+	if apis.IsInDelete(ctx) {
+		return nil
+	}
+	return fmt.Errorf("v1 is the highest known version, got: %T", sink)
+}
+
+// ConvertFrom implements apis.Convertible
+func (t *Task) ConvertFrom(ctx context.Context, source apis.Convertible) error {
+	if apis.IsInDelete(ctx) {
+		return nil
+	}
+	return fmt.Errorf("v1 is the highest know version, got: %T", source)
+}

pkg/apis/pipeline/v1/task_conversion_test.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2022 The Tetkon Authors
+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
+    http://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 v1_test
+
+import (
+	"context"
+	"testing"
+
+	v1 "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1"
+	"knative.dev/pkg/apis"
+)
+
+type convertible struct{}
+
+func (c *convertible) ConvertTo(ctx context.Context, sink apis.Convertible) error {
+	return nil
+}
+func (c *convertible) ConvertFrom(ctx context.Context, source apis.Convertible) error {
+	return nil
+}
+
+func TestTaskConversionBadType(t *testing.T) {
+	good, bad := &v1.Task{}, &convertible{}
+
+	if err := good.ConvertTo(context.Background(), bad); err == nil {
+		t.Errorf("ConvertTo() = %#v, wanted error", bad)
+	}
+
+	if err := good.ConvertFrom(context.Background(), bad); err == nil {
+		t.Errorf("ConvertFrom() = %#v, wanted error", good)
+	}
+}

pkg/apis/pipeline/v1beta1/container_conversion.go

@@ -0,0 +1,160 @@
+package v1beta1
+
+import (
+	"context"
+
+	v1 "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1"
+)
+
+func (s Step) convertTo(ctx context.Context, sink *v1.Step) {
+	sink.Name = s.Name
+	sink.Image = s.Image
+	sink.Command = s.Command
+	sink.Args = s.Args
+	sink.WorkingDir = s.WorkingDir
+	sink.EnvFrom = s.EnvFrom
+	sink.Env = s.Env
+	sink.Resources = s.Resources
+	sink.VolumeMounts = s.VolumeMounts
+	sink.VolumeDevices = s.VolumeDevices
+	sink.ImagePullPolicy = s.ImagePullPolicy
+	sink.SecurityContext = s.SecurityContext
+	sink.Script = s.Script
+	sink.Timeout = s.Timeout
+
+	sink.Workspaces = nil
+	for _, w := range s.Workspaces {
+		new := v1.WorkspaceUsage{}
+		w.convertTo(ctx, &new)
+		sink.Workspaces = append(sink.Workspaces, new)
+	}
+	sink.OnError = s.OnError
+	sink.StdoutConfig = (*v1.StepOutputConfig)(s.StdoutConfig)
+	sink.StderrConfig = (*v1.StepOutputConfig)(s.StderrConfig)
+
+	// TODO(#4546): Handle deprecated fields
+	// Ports, LivenessProbe, ReadinessProbe, StartupProbe, Lifecycle, TerminationMessagePath
+	// TerminationMessagePolicy, Stdin, StdinOnce, TTY
+}
+
+func (s *Step) convertFrom(ctx context.Context, source v1.Step) {
+	s.Name = source.Name
+	s.Image = source.Image
+	s.Command = source.Command
+	s.Args = source.Args
+	s.WorkingDir = source.WorkingDir
+	s.EnvFrom = source.EnvFrom
+	s.Env = source.Env
+	s.Resources = source.Resources
+	s.VolumeMounts = source.VolumeMounts
+	s.VolumeDevices = source.VolumeDevices
+	s.ImagePullPolicy = source.ImagePullPolicy
+	s.SecurityContext = source.SecurityContext
+	s.Script = source.Script
+	s.Timeout = source.Timeout
+
+	s.Workspaces = nil
+	for _, w := range source.Workspaces {
+		new := WorkspaceUsage{}
+		new.convertFrom(ctx, w)
+		s.Workspaces = append(s.Workspaces, new)
+	}
+	s.OnError = source.OnError
+	s.StdoutConfig = (*StepOutputConfig)(source.StdoutConfig)
+	s.StderrConfig = (*StepOutputConfig)(source.StderrConfig)
+}
+
+func (s StepTemplate) convertTo(ctx context.Context, sink *v1.StepTemplate) {
+	sink.Image = s.Image
+	sink.Command = s.Command
+	sink.Args = s.Args
+	sink.WorkingDir = s.WorkingDir
+	sink.EnvFrom = s.EnvFrom
+	sink.Env = s.Env
+	sink.Resources = s.Resources
+	sink.VolumeMounts = s.VolumeMounts
+	sink.VolumeDevices = s.VolumeDevices
+	sink.ImagePullPolicy = s.ImagePullPolicy
+	sink.SecurityContext = s.SecurityContext
+	// TODO(#4546): Handle deprecated fields
+	// Name, Ports, LivenessProbe, ReadinessProbe, StartupProbe, Lifecycle, TerminationMessagePath
+	// TerminationMessagePolicy, Stdin, StdinOnce, TTY
+}
+
+func (s *StepTemplate) convertFrom(ctx context.Context, source *v1.StepTemplate) {
+	s.Image = source.Image
+	s.Command = source.Command
+	s.Args = source.Args
+	s.WorkingDir = source.WorkingDir
+	s.EnvFrom = source.EnvFrom
+	s.Env = source.Env
+	s.Resources = source.Resources
+	s.VolumeMounts = source.VolumeMounts
+	s.VolumeDevices = source.VolumeDevices
+	s.ImagePullPolicy = source.ImagePullPolicy
+	s.SecurityContext = source.SecurityContext
+}
+
+func (s Sidecar) convertTo(ctx context.Context, sink *v1.Sidecar) {
+	sink.Name = s.Name
+	sink.Image = s.Image
+	sink.Command = s.Command
+	sink.Args = s.Args
+	sink.WorkingDir = s.WorkingDir
+	sink.Ports = s.Ports
+	sink.EnvFrom = s.EnvFrom
+	sink.Env = s.Env
+	sink.Resources = s.Resources
+	sink.VolumeMounts = s.VolumeMounts
+	sink.VolumeDevices = s.VolumeDevices
+	sink.LivenessProbe = s.LivenessProbe
+	sink.ReadinessProbe = s.ReadinessProbe
+	sink.StartupProbe = s.StartupProbe
+	sink.Lifecycle = s.Lifecycle
+	sink.TerminationMessagePath = s.TerminationMessagePath
+	sink.TerminationMessagePolicy = s.TerminationMessagePolicy
+	sink.ImagePullPolicy = s.ImagePullPolicy
+	sink.SecurityContext = s.SecurityContext
+	sink.Stdin = s.Stdin
+	sink.StdinOnce = s.StdinOnce
+	sink.TTY = s.TTY
+	sink.Script = s.Script
+	sink.Workspaces = nil
+	for _, w := range s.Workspaces {
+		new := v1.WorkspaceUsage{}
+		w.convertTo(ctx, &new)
+		sink.Workspaces = append(sink.Workspaces, new)
+	}
+}
+
+func (s *Sidecar) convertFrom(ctx context.Context, source v1.Sidecar) {
+	s.Name = source.Name
+	s.Image = source.Image
+	s.Command = source.Command
+	s.Args = source.Args
+	s.WorkingDir = source.WorkingDir
+	s.Ports = source.Ports
+	s.EnvFrom = source.EnvFrom
+	s.Env = source.Env
+	s.Resources = source.Resources
+	s.VolumeMounts = source.VolumeMounts
+	s.VolumeDevices = source.VolumeDevices
+	s.LivenessProbe = source.LivenessProbe
+	s.ReadinessProbe = source.ReadinessProbe
+	s.StartupProbe = source.StartupProbe
+	s.Lifecycle = source.Lifecycle
+	s.TerminationMessagePath = source.TerminationMessagePath
+	s.TerminationMessagePolicy = source.TerminationMessagePolicy
+	s.ImagePullPolicy = source.ImagePullPolicy
+	s.SecurityContext = source.SecurityContext
+	s.Stdin = source.Stdin
+	s.StdinOnce = source.StdinOnce
+	s.TTY = source.TTY
+	s.Script = source.Script
+	s.Workspaces = nil
+	for _, w := range source.Workspaces {
+		new := WorkspaceUsage{}
+		new.convertFrom(ctx, w)
+		s.Workspaces = append(s.Workspaces, new)
+	}
+}

pkg/apis/pipeline/v1beta1/param_conversion.go

@@ -0,0 +1,47 @@
+package v1beta1
+
+import (
+	"context"
+
+	v1 "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1"
+)
+
+func (p ParamSpec) convertTo(ctx context.Context, sink *v1.ParamSpec) {
+	sink.Name = p.Name
+	sink.Type = v1.ParamType(p.Type)
+	sink.Description = p.Description
+	var properties map[string]v1.PropertySpec
+	if p.Properties != nil {
+		properties = make(map[string]v1.PropertySpec)
+	}
+	for k, v := range p.Properties {
+		properties[k] = v1.PropertySpec{Type: v1.ParamType(v.Type)}
+	}
+	sink.Properties = properties
+	if p.Default != nil {
+		sink.Default = &v1.ArrayOrString{
+			Type: v1.ParamType(p.Default.Type), StringVal: p.Default.StringVal,
+			ArrayVal: p.Default.ArrayVal, ObjectVal: p.Default.ObjectVal,
+		}
+	}
+}
+
+func (p *ParamSpec) convertFrom(ctx context.Context, source v1.ParamSpec) {
+	p.Name = source.Name
+	p.Type = ParamType(source.Type)
+	p.Description = source.Description
+	var properties map[string]PropertySpec
+	if source.Properties != nil {
+		properties = make(map[string]PropertySpec)
+	}
+	for k, v := range source.Properties {
+		properties[k] = PropertySpec{Type: ParamType(v.Type)}
+	}
+	p.Properties = properties
+	if source.Default != nil {
+		p.Default = &ArrayOrString{
+			Type: ParamType(source.Default.Type), StringVal: source.Default.StringVal,
+			ArrayVal: source.Default.ArrayVal, ObjectVal: source.Default.ObjectVal,
+		}
+	}
+}

pkg/apis/pipeline/v1beta1/result_conversion.go

@@ -0,0 +1,29 @@
+package v1beta1
+
+import (
+	"context"
+
+	v1 "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1"
+)
+
+func (r TaskResult) convertTo(ctx context.Context, sink *v1.TaskResult) {
+	sink.Name = r.Name
+	sink.Type = v1.ResultsType(r.Type)
+	sink.Description = r.Description
+	properties := make(map[string]v1.PropertySpec)
+	for k, v := range r.Properties {
+		properties[k] = v1.PropertySpec{Type: v1.ParamType(v.Type)}
+	}
+	sink.Properties = properties
+}
+
+func (r *TaskResult) convertFrom(ctx context.Context, source v1.TaskResult) {
+	r.Name = source.Name
+	r.Type = ResultsType(source.Type)
+	r.Description = source.Description
+	properties := make(map[string]PropertySpec)
+	for k, v := range source.Properties {
+		properties[k] = PropertySpec{Type: ParamType(v.Type)}
+	}
+	r.Properties = properties
+}