configFile.go

// Copyright 2016-2020, Pulumi Corporation.
//
// 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.

// *** WARNING: this file was generated by pulumigen. ***
// *** Do not edit by hand unless you're certain you know what you are doing! ***

package yaml

import (
	"fmt"

	"github.com/pkg/errors"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

// ConfigFile creates a set of Kubernetes resources from a Kubernetes YAML file.
//
// ## Example Usage
// ### Local File
//
// ```go
// package main
//
// import (
//     "github.com/pulumi/pulumi-kubernetes/sdk/v3/go/kubernetes/yaml"
//     "github.com/pulumi/pulumi/sdk/v3/go/pulumi"
// )
//
// func main() {
//     pulumi.Run(func(ctx *pulumi.Context) error {
//         _, err := yaml.NewConfigFile(ctx, "example",
//             &yaml.ConfigFileArgs{
//                 File: "foo.yaml",
//             },
//         )
//         if err != nil {
//             return err
//         }
//
//         return nil
//     })
// }
// ```
// ### YAML with Transformations
//
// ```go
// package main
//
// import (
//     "github.com/pulumi/pulumi-kubernetes/sdk/v3/go/kubernetes/yaml"
//     "github.com/pulumi/pulumi/sdk/v3/go/pulumi"
// )
//
// func main() {
//     pulumi.Run(func(ctx *pulumi.Context) error {
//         _, err := yaml.NewConfigFile(ctx, "example",
//             &yaml.ConfigFileArgs{
//                 File: "foo.yaml",
//                 Transformations: []yaml.Transformation{
//                     // Make every service private to the cluster, i.e., turn all services into ClusterIP
//                     // instead of LoadBalancer.
//                     func(state map[string]interface{}, opts ...pulumi.ResourceOption) {
//                         if state["kind"] == "Service" {
//                             spec := state["spec"].(map[string]interface{})
//                             spec["type"] = "ClusterIP"
//                         }
//                     },
//
//                     // Set a resource alias for a previous name.
//                     func(state map[string]interface{}, opts ...pulumi.ResourceOption) {
//                         if state["kind"] == "Deployment" {
//                             aliases := pulumi.Aliases([]pulumi.Alias{
//                                 {
//                                     Name: pulumi.String("oldName"),
//                                 },
//                             })
//                             opts = append(opts, aliases)
//                         }
//                     },
//
//                     // Omit a resource from the Chart by transforming the specified resource definition
//                     // to an empty List.
//                     func(state map[string]interface{}, opts ...pulumi.ResourceOption) {
//                         name := state["metadata"].(map[string]interface{})["name"]
//                         if state["kind"] == "Pod" && name == "test" {
//                             state["apiVersion"] = "core/v1"
//                             state["kind"] = "List"
//                         }
//                     },
//                 },
//             },
//         )
//         if err != nil {
//             return err
//         }
//
//         return nil
//     })
// }
// ```
type ConfigFile struct {
	pulumi.ResourceState

	Resources map[string]pulumi.Resource
}

// The set of arguments for constructing a ConfigFile resource.
type ConfigFileArgs struct {
	// File is a path or URL that uniquely identifies a file.
	File string
	// Transformations is an optional list of transformations to apply to Kubernetes resource definitions
	// before registering with the engine.
	Transformations []Transformation
	// ResourcePrefix is an optional prefix for the auto-generated resource names. For example, a resource named `bar`
	// created with resource prefix of `"foo"` would produce a resource named `"foo-bar"`.
	ResourcePrefix string
}

// NewConfigFile registers a new resource with the given unique name, arguments, and options.
func NewConfigFile(ctx *pulumi.Context,
	name string, args *ConfigFileArgs, opts ...pulumi.ResourceOption) (*ConfigFile, error) {

	// Register the resulting resource state.
	configFile := &ConfigFile{
		Resources: map[string]pulumi.Resource{},
	}
	err := ctx.RegisterComponentResource("kubernetes:yaml:ConfigFile", name, configFile, opts...)
	if err != nil {
		return nil, err
	}

	// Now provision all child resources by parsing the YAML file.
	if args != nil {
		// Honor the resource name prefix if specified.
		if args.ResourcePrefix != "" {
			name = args.ResourcePrefix + "-" + name
		}

		// Parse and decode the YAML files.
		rs, err := parseDecodeYamlFiles(ctx, &ConfigGroupArgs{
			Files:           []string{args.File},
			Transformations: args.Transformations,
			ResourcePrefix:  args.ResourcePrefix,
		}, true, pulumi.Parent(configFile))
		if err != nil {
			return nil, err
		}
		configFile.Resources = rs
	}

	// Finally, register all of the resources found.
	err = ctx.RegisterResourceOutputs(configFile, pulumi.Map{})
	if err != nil {
		return nil, errors.Wrapf(err, "registering child resources")
	}

	return configFile, nil
}

// GetResource returns a resource defined by a built-in Kubernetes group/version/kind, name and namespace.
// For example, GetResource("v1/Pod", "foo", "") would return a Pod called "foo" from the "default" namespace.
func (cf *ConfigFile) GetResource(gvk, name, namespace string) pulumi.Resource {
	id := name
	if len(namespace) > 0 && namespace != "default" {
		id = fmt.Sprintf("%s/%s", namespace, name)
	}
	key := fmt.Sprintf("%s::%s", gvk, id)
	return cf.Resources[key]
}