[V3] (Part 2) Add new schema to latest/v2

- Define a new schema `v3alpha1` for the skaffold v2 feature.
- Create `latest/v2` dir to track `v3alpha*` schemas.

pkg/skaffold/schema/latest/v2/config.go

@@ -0,0 +1,174 @@
+/*
+Copyright 2021 The Skaffold 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 v2
+
+import "github.com/GoogleContainerTools/skaffold/pkg/skaffold/schema/util"
+
+const Version string = "skaffold/v3alpha1"
+
+// NewSkaffoldConfig creates a SkaffoldConfig
+func NewSkaffoldConfig() util.VersionedConfig {
+	return new(SkaffoldConfig)
+}
+
+func (c *SkaffoldConfig) GetVersion() string {
+	return c.APIVersion
+}
+
+// SkaffoldConfig holds the fields parsed from the Skaffold configuration file (skaffold.yaml).
+type SkaffoldConfig struct {
+	// APIVersion is the version of the configuration.
+	APIVersion string `yaml:"apiVersion" yamltags:"required"`
+
+	// Kind is always `Config`. Defaults to `Config`.
+	Kind string `yaml:"kind" yamltags:"required"`
+
+	// Metadata holds additional information about the config.
+	Metadata Metadata `yaml:"metadata,omitempty"`
+
+	// Dependencies describes a list of other required configs for the current config.
+	Dependencies []latest_v1.ConfigDependency `yaml:"requires,omitempty"`
+
+	// Pipeline defines the Build/Test/Deploy phases.
+	Pipeline `yaml:",inline"`
+
+	// Profiles *beta* can override be used to `build`, `test` or `deploy` configuration.
+	Profiles []Profile `yaml:"profiles,omitempty"`
+}
+
+// Metadata holds an optional name of the project.
+type Metadata struct {
+	// Name is an identifier for the project.
+	Name string `yaml:"name,omitempty"`
+}
+
+// Pipeline describes a Skaffold pipeline.
+type Pipeline struct {
+	// Build describes how images are built.
+	Build latest_v1.BuildConfig `yaml:"build,omitempty"`
+
+	// Test describes how images are tested.
+	Test []*latest_v1.TestCase `yaml:"test,omitempty"`
+
+	// Render describes how the original manifests are hydrated, validated and transformed.
+	Render RenderConfig `yaml:"render,omitempty"`
+
+	// Deploy describes how the manifests are deployed.
+	Deploy DeployConfig `yaml:"deploy,omitempty"`
+
+	// PortForward describes user defined resources to port-forward.
+	PortForward []*latest_v1.PortForwardResource `yaml:"portForward,omitempty"`
+}
+
+// RenderConfig contains all the configuration needed by the render steps.
+type RenderConfig struct {
+
+	// Generate defines the dry manifests from a variety of sources.
+	Generate *Generate `yaml:"generate,omitempty"`
+
+	// Transform defines a set of transformation operations to run in series
+	Transform *[]Transformer `yaml:"transform,omitempty"`
+
+	// Validate defines a set of validator operations to run in series.
+	Validate *[]Validator `yaml:"validate,omitempty"`
+
+	// Output is the path to the hydrated directory.
+	Output string `yaml:"output,omitempty"`
+}
+
+// Generate defines the dry manifests from a variety of sources.
+type Generate struct {
+
+	// Manifests contains the raw kubernetes manifest paths and kustomize paths.
+	Manifests []string `yaml:"manifests,omitempty"`
+
+	// TODO: Implement the "HelmCharts" and "RemoteResoruces" fields.
+}
+
+// Transformer describes the supported kpt transformers.
+type Transformer struct {
+	// Name is the transformer name. Can only accept skaffold whitelisted tools.
+	Name string `yaml:"name" yamltags:"required"`
+}
+
+// Transformer describes the supported kpt transformers.
+type Validator struct {
+	// Name is the Validator name. Can only accept skaffold whitelisted tools.
+	Name string `yaml:"name" yamltags:"required"`
+}
+
+// DeployConfig contains all the configuration needed by the deploy steps.
+type DeployConfig struct {
+
+	// Dir is equivalent to the dir in `kpt live apply <dir>`. If not provided, skaffold renders the raw manifests
+	// and store them to a a hidden directory `.kpt-hydrated`, and deploys the hidden directory.
+	Dir string `yaml:"dir,omitempty"`
+
+	// InventoryID *alpha* is the identifier for a group of applied resources.
+	// This value is only needed when the `kpt live` is working on a pre-applied cluster resources.
+	InventoryID string `yaml:"inventoryID,omitempty"`
+	// InventoryNamespace *alpha* sets the inventory namespace.
+	InventoryNamespace string `yaml:"inventoryNamespace,omitempty"`
+
+	// statusCheckDeadlineSeconds sets for the polling period for resource statuses. Default to 2s. Values can be "2s", "1min", "3h", etc
+	statusCheckDeadlineSeconds string `statusCheckDeadlineSeconds:"pollPeriod,omitempty"`
+	// PrunePropagationPolicy sets the propagation policy for pruning.
+	// Possible settings are Background, Foreground, Orphan.
+	// Default to "Background".
+	PrunePropagationPolicy string `yaml:"prunePropagationPolicy,omitempty"`
+	// PruneTimeout sets the time threshold to wait for all pruned resources to be deleted.
+	PruneTimeout string `yaml:"pruneTimeout,omitempty"`
+	// ReconcileTimeout sets the time threshold to wait for all resources to reach the current status.
+	ReconcileTimeout string `yaml:"reconcileTimeout,omitempty"`
+
+	// KubeContext is the Kubernetes context that Skaffold should deploy to.
+	// For example: `minikube`.
+	KubeContext string `yaml:"kubeContext,omitempty"`
+
+	// Logs configures how container logs are printed as a result of a deployment.
+	Logs LogsConfig `yaml:"logs,omitempty"`
+}
+
+// LogsConfig configures how container logs are printed as a result of a deployment.
+type LogsConfig struct {
+	// Prefix defines the prefix shown on each log line. Valid values are
+	// `container`: prefix logs lines with the name of the container.
+	// `podAndContainer`: prefix logs lines with the names of the pod and of the container.
+	// `auto`: same as `podAndContainer` except that the pod name is skipped if it's the same as the container name.
+	// `none`: don't add a prefix.
+	// Defaults to `auto`.
+	Prefix string `yaml:"prefix,omitempty"`
+}
+
+// Profile is used to override any `build`, `test` or `deploy` configuration.
+type Profile struct {
+	// Name is a unique profile name.
+	// For example: `profile-prod`.
+	Name string `yaml:"name,omitempty" yamltags:"required"`
+
+	// Activation criteria by which a profile can be auto-activated.
+	// The profile is auto-activated if any one of the activations are triggered.
+	// An activation is triggered if all of the criteria (env, kubeContext, command) are triggered.
+	Activation []latest_v1.Activation `yaml:"activation,omitempty"`
+
+	// Patches lists patches applied to the configuration.
+	// Patches use the JSON patch notation.
+	Patches []latest_v1.JSONPatch `yaml:"patches,omitempty"`
+
+	// Pipeline contains the definitions to replace the default skaffold pipeline.
+	Pipeline `yaml:",inline"`
+}

pkg/skaffold/schema/latest/v2/upgrade.go

@@ -0,0 +1,28 @@
+/*
+Copyright 2021 The Skaffold 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 v2
+
+import (
+	"errors"
+
+	"github.com/GoogleContainerTools/skaffold/pkg/skaffold/schema/util"
+)
+
+// Upgrade upgrades a configuration to the next version.
+func (c *SkaffoldConfig) Upgrade() (util.VersionedConfig, error) {
+	return nil, errors.New("there's no version to upgrade from \"latest\"")
+}

pkg/skaffold/schema/v3alpha1/config.go

@@ -0,0 +1,177 @@
+/*
+Copyright 2021 The Skaffold 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 v3alpha1
+
+import (
+	latest_v1 "github.com/GoogleContainerTools/skaffold/pkg/skaffold/schema/latest/v1"
+	"github.com/GoogleContainerTools/skaffold/pkg/skaffold/schema/util"
+)
+
+const Version string = "skaffold/v3alpha1"
+
+// NewSkaffoldConfig creates a SkaffoldConfig
+func NewSkaffoldConfig() util.VersionedConfig {
+	return new(SkaffoldConfig)
+}
+
+func (c *SkaffoldConfig) GetVersion() string {
+	return c.APIVersion
+}
+
+// SkaffoldConfig holds the fields parsed from the Skaffold configuration file (skaffold.yaml).
+type SkaffoldConfig struct {
+	// APIVersion is the version of the configuration.
+	APIVersion string `yaml:"apiVersion" yamltags:"required"`
+
+	// Kind is always `Config`. Defaults to `Config`.
+	Kind string `yaml:"kind" yamltags:"required"`
+
+	// Metadata holds additional information about the config.
+	Metadata Metadata `yaml:"metadata,omitempty"`
+
+	// Dependencies describes a list of other required configs for the current config.
+	Dependencies []latest_v1.ConfigDependency `yaml:"requires,omitempty"`
+
+	// Pipeline defines the Build/Test/Deploy phases.
+	Pipeline `yaml:",inline"`
+
+	// Profiles *beta* can override be used to `build`, `test` or `deploy` configuration.
+	Profiles []Profile `yaml:"profiles,omitempty"`
+}
+
+// Metadata holds an optional name of the project.
+type Metadata struct {
+	// Name is an identifier for the project.
+	Name string `yaml:"name,omitempty"`
+}
+
+// Pipeline describes a Skaffold pipeline.
+type Pipeline struct {
+	// Build describes how images are built.
+	Build latest_v1.BuildConfig `yaml:"build,omitempty"`
+
+	// Test describes how images are tested.
+	Test []*latest_v1.TestCase `yaml:"test,omitempty"`
+
+	// Render describes how the original manifests are hydrated, validated and transformed.
+	Render RenderConfig `yaml:"render,omitempty"`
+
+	// Deploy describes how the manifests are deployed.
+	Deploy DeployConfig `yaml:"deploy,omitempty"`
+
+	// PortForward describes user defined resources to port-forward.
+	PortForward []*latest_v1.PortForwardResource `yaml:"portForward,omitempty"`
+}
+
+// RenderConfig contains all the configuration needed by the render steps.
+type RenderConfig struct {
+
+	// Generate defines the dry manifests from a variety of sources.
+	Generate *Generate `yaml:"generate,omitempty"`
+
+	// Transform defines a set of transformation operations to run in series
+	Transform *[]Transformer `yaml:"transform,omitempty"`
+
+	// Validate defines a set of validator operations to run in series.
+	Validate *[]Validator `yaml:"validate,omitempty"`
+
+	// Output is the path to the hydrated directory.
+	Output string `yaml:"output,omitempty"`
+}
+
+// Generate defines the dry manifests from a variety of sources.
+type Generate struct {
+
+	// Manifests contains the raw kubernetes manifest paths and kustomize paths.
+	Manifests []string `yaml:"manifests,omitempty"`
+
+	// TODO: Implement the "HelmCharts" and "RemoteResoruces" fields.
+}
+
+// Transformer describes the supported kpt transformers.
+type Transformer struct {
+	// Name is the transformer name. Can only accept skaffold whitelisted tools.
+	Name string `yaml:"name" yamltags:"required"`
+}
+
+// Transformer describes the supported kpt transformers.
+type Validator struct {
+	// Name is the Validator name. Can only accept skaffold whitelisted tools.
+	Name string `yaml:"name" yamltags:"required"`
+}
+
+// DeployConfig contains all the configuration needed by the deploy steps.
+type DeployConfig struct {
+
+	// Dir is equivalent to the dir in `kpt live apply <dir>`. If not provided, skaffold renders the raw manifests
+	// and store them to a a hidden directory `.kpt-hydrated`, and deploys the hidden directory.
+	Dir string `yaml:"dir,omitempty"`
+
+	// InventoryID *alpha* is the identifier for a group of applied resources.
+	// This value is only needed when the `kpt live` is working on a pre-applied cluster resources.
+	InventoryID string `yaml:"inventoryID,omitempty"`
+	// InventoryNamespace *alpha* sets the inventory namespace.
+	InventoryNamespace string `yaml:"inventoryNamespace,omitempty"`
+
+	// statusCheckDeadlineSeconds sets for the polling period for resource statuses. Default to 2s. Values can be "2s", "1min", "3h", etc
+	statusCheckDeadlineSeconds string `statusCheckDeadlineSeconds:"pollPeriod,omitempty"`
+	// PrunePropagationPolicy sets the propagation policy for pruning.
+	// Possible settings are Background, Foreground, Orphan.
+	// Default to "Background".
+	PrunePropagationPolicy string `yaml:"prunePropagationPolicy,omitempty"`
+	// PruneTimeout sets the time threshold to wait for all pruned resources to be deleted.
+	PruneTimeout string `yaml:"pruneTimeout,omitempty"`
+	// ReconcileTimeout sets the time threshold to wait for all resources to reach the current status.
+	ReconcileTimeout string `yaml:"reconcileTimeout,omitempty"`
+
+	// KubeContext is the Kubernetes context that Skaffold should deploy to.
+	// For example: `minikube`.
+	KubeContext string `yaml:"kubeContext,omitempty"`
+
+	// Logs configures how container logs are printed as a result of a deployment.
+	Logs LogsConfig `yaml:"logs,omitempty"`
+}
+
+// LogsConfig configures how container logs are printed as a result of a deployment.
+type LogsConfig struct {
+	// Prefix defines the prefix shown on each log line. Valid values are
+	// `container`: prefix logs lines with the name of the container.
+	// `podAndContainer`: prefix logs lines with the names of the pod and of the container.
+	// `auto`: same as `podAndContainer` except that the pod name is skipped if it's the same as the container name.
+	// `none`: don't add a prefix.
+	// Defaults to `auto`.
+	Prefix string `yaml:"prefix,omitempty"`
+}
+
+// Profile is used to override any `build`, `test` or `deploy` configuration.
+type Profile struct {
+	// Name is a unique profile name.
+	// For example: `profile-prod`.
+	Name string `yaml:"name,omitempty" yamltags:"required"`
+
+	// Activation criteria by which a profile can be auto-activated.
+	// The profile is auto-activated if any one of the activations are triggered.
+	// An activation is triggered if all of the criteria (env, kubeContext, command) are triggered.
+	Activation []latest_v1.Activation `yaml:"activation,omitempty"`
+
+	// Patches lists patches applied to the configuration.
+	// Patches use the JSON patch notation.
+	Patches []latest_v1.JSONPatch `yaml:"patches,omitempty"`
+
+	// Pipeline contains the definitions to replace the default skaffold pipeline.
+	Pipeline `yaml:",inline"`
+}