resource_github_repository_deploy_key.go

package github

import (
	"context"
	"log"
	"net/http"
	"regexp"
	"strconv"
	"strings"

	"github.com/google/go-github/github"
	"github.com/hashicorp/terraform/helper/schema"
)

func resourceGithubRepositoryDeployKey() *schema.Resource {
	return &schema.Resource{
		Create: resourceGithubRepositoryDeployKeyCreate,
		Read:   resourceGithubRepositoryDeployKeyRead,
		Delete: resourceGithubRepositoryDeployKeyDelete,
		Importer: &schema.ResourceImporter{
			State: schema.ImportStatePassthrough,
		},

		// Deploy keys are defined immutable in the API. Updating results in force new.
		Schema: map[string]*schema.Schema{
			"key": &schema.Schema{
				Type:             schema.TypeString,
				Required:         true,
				ForceNew:         true,
				DiffSuppressFunc: suppressDeployKeyDiff,
			},
			"read_only": &schema.Schema{
				Type:     schema.TypeBool,
				Optional: true,
				ForceNew: true,
				Default:  true,
			},
			"repository": &schema.Schema{
				Type:     schema.TypeString,
				Required: true,
				ForceNew: true,
			},
			"title": &schema.Schema{
				Type:     schema.TypeString,
				Required: true,
				ForceNew: true,
			},
			"etag": {
				Type:     schema.TypeString,
				Computed: true,
			},
		},
	}
}

func resourceGithubRepositoryDeployKeyCreate(d *schema.ResourceData, meta interface{}) error {
	client := meta.(*Organization).client

	repoName := d.Get("repository").(string)
	key := d.Get("key").(string)
	title := d.Get("title").(string)
	readOnly := d.Get("read_only").(bool)
	owner := meta.(*Organization).name
	ctx := context.Background()

	log.Printf("[DEBUG] Creating repository deploy key: %s (%s/%s)", title, owner, repoName)
	resultKey, _, err := client.Repositories.CreateKey(ctx, owner, repoName, &github.Key{
		Key:      github.String(key),
		Title:    github.String(title),
		ReadOnly: github.Bool(readOnly),
	})

	if err != nil {
		return err
	}

	id := strconv.FormatInt(*resultKey.ID, 10)

	d.SetId(buildTwoPartID(&repoName, &id))

	return resourceGithubRepositoryDeployKeyRead(d, meta)
}

func resourceGithubRepositoryDeployKeyRead(d *schema.ResourceData, meta interface{}) error {
	client := meta.(*Organization).client

	owner := meta.(*Organization).name
	repoName, idString, err := parseTwoPartID(d.Id())
	if err != nil {
		return err
	}

	id, err := strconv.ParseInt(idString, 10, 64)
	if err != nil {
		return unconvertibleIdErr(idString, err)
	}
	ctx := context.WithValue(context.Background(), ctxId, d.Id())
	if !d.IsNewResource() {
		ctx = context.WithValue(ctx, ctxEtag, d.Get("etag").(string))
	}

	log.Printf("[DEBUG] Reading repository deploy key: %s (%s/%s)", d.Id(), owner, repoName)
	key, resp, err := client.Repositories.GetKey(ctx, owner, repoName, id)
	if err != nil {
		if ghErr, ok := err.(*github.ErrorResponse); ok {
			if ghErr.Response.StatusCode == http.StatusNotModified {
				return nil
			}
			if ghErr.Response.StatusCode == http.StatusNotFound {
				log.Printf("[WARN] Removing repository deploy key %s from state because it no longer exists in GitHub",
					d.Id())
				d.SetId("")
				return nil
			}
		}
		return err
	}

	d.Set("etag", resp.Header.Get("ETag"))
	d.Set("key", key.Key)
	d.Set("read_only", key.ReadOnly)
	d.Set("repository", repoName)
	d.Set("title", key.Title)

	return nil
}

func resourceGithubRepositoryDeployKeyDelete(d *schema.ResourceData, meta interface{}) error {
	client := meta.(*Organization).client

	owner := meta.(*Organization).name
	repoName, idString, err := parseTwoPartID(d.Id())
	if err != nil {
		return err
	}

	id, err := strconv.ParseInt(idString, 10, 64)
	if err != nil {
		return unconvertibleIdErr(idString, err)
	}
	ctx := context.WithValue(context.Background(), ctxId, d.Id())

	log.Printf("[DEBUG] Deleting repository deploy key: %s (%s/%s)", idString, owner, repoName)
	_, err = client.Repositories.DeleteKey(ctx, owner, repoName, id)
	if err != nil {
		return err
	}

	return err
}

func suppressDeployKeyDiff(k, oldV, newV string, d *schema.ResourceData) bool {
	newV = strings.TrimSpace(newV)
	keyRe := regexp.MustCompile(`^([a-z0-9-]+ [^\s]+)( [^\s]+)?$`)
	newTrimmed := keyRe.ReplaceAllString(newV, "$1")

	return oldV == newTrimmed
}