forgejo-federation/services/webhook/sourcehut/builds.go
2024-04-05 10:20:40 +02:00

312 lines
10 KiB
Go

// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package sourcehut
import (
"cmp"
"context"
"fmt"
"html/template"
"io/fs"
"net/http"
"strings"
webhook_model "code.gitea.io/gitea/models/webhook"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
webhook_module "code.gitea.io/gitea/modules/webhook"
gitea_context "code.gitea.io/gitea/services/context"
"code.gitea.io/gitea/services/forms"
"code.gitea.io/gitea/services/webhook/shared"
"gitea.com/go-chi/binding"
"gopkg.in/yaml.v3"
)
type BuildsHandler struct{}
func (BuildsHandler) Type() webhook_module.HookType { return webhook_module.SOURCEHUT_BUILDS }
func (BuildsHandler) Metadata(w *webhook_model.Webhook) any {
s := &BuildsMeta{}
if err := json.Unmarshal([]byte(w.Meta), s); err != nil {
log.Error("sourcehut.BuildsHandler.Metadata(%d): %v", w.ID, err)
}
return s
}
func (BuildsHandler) Icon(size int) template.HTML {
return shared.ImgIcon("sourcehut.svg", size)
}
type buildsForm struct {
forms.WebhookCoreForm
PayloadURL string `binding:"Required;ValidUrl"`
ManifestPath string `binding:"Required"`
Visibility string `binding:"Required;In(PUBLIC,UNLISTED,PRIVATE)"`
Secrets bool
}
var _ binding.Validator = &buildsForm{}
// Validate implements binding.Validator.
func (f *buildsForm) Validate(req *http.Request, errs binding.Errors) binding.Errors {
ctx := gitea_context.GetWebContext(req)
if !fs.ValidPath(f.ManifestPath) {
errs = append(errs, binding.Error{
FieldNames: []string{"ManifestPath"},
Classification: "",
Message: ctx.Locale.TrString("repo.settings.add_webhook.invalid_path"),
})
}
if !strings.HasPrefix(f.AuthorizationHeader, "Bearer ") {
errs = append(errs, binding.Error{
FieldNames: []string{"AuthorizationHeader"},
Classification: "",
Message: ctx.Locale.TrString("form.required_prefix", "Bearer "),
})
}
return errs
}
func (BuildsHandler) UnmarshalForm(bind func(any)) forms.WebhookForm {
var form buildsForm
bind(&form)
return forms.WebhookForm{
WebhookCoreForm: form.WebhookCoreForm,
URL: form.PayloadURL,
ContentType: webhook_model.ContentTypeJSON,
Secret: "",
HTTPMethod: http.MethodPost,
Metadata: &BuildsMeta{
ManifestPath: form.ManifestPath,
Visibility: form.Visibility,
Secrets: form.Secrets,
},
}
}
type (
graphqlPayload[V any] struct {
Query string `json:"query,omitempty"`
Error string `json:"error,omitempty"`
Variables V `json:"variables,omitempty"`
}
// buildsVariables according to https://man.sr.ht/builds.sr.ht/graphql.md
buildsVariables struct {
Manifest string `json:"manifest"`
Tags []string `json:"tags"`
Note string `json:"note"`
Secrets bool `json:"secrets"`
Execute bool `json:"execute"`
Visibility string `json:"visibility"`
}
// BuildsMeta contains the metadata for the webhook
BuildsMeta struct {
ManifestPath string `json:"manifest_path"`
Visibility string `json:"visibility"`
Secrets bool `json:"secrets"`
}
)
type sourcehutConvertor struct {
ctx context.Context
meta BuildsMeta
}
var _ shared.PayloadConvertor[graphqlPayload[buildsVariables]] = sourcehutConvertor{}
func (BuildsHandler) NewRequest(ctx context.Context, w *webhook_model.Webhook, t *webhook_model.HookTask) (*http.Request, []byte, error) {
meta := BuildsMeta{}
if err := json.Unmarshal([]byte(w.Meta), &meta); err != nil {
return nil, nil, fmt.Errorf("newSourcehutRequest meta json: %w", err)
}
pc := sourcehutConvertor{
ctx: ctx,
meta: meta,
}
return shared.NewJSONRequest(pc, w, t, false)
}
// Create implements PayloadConvertor Create method
func (pc sourcehutConvertor) Create(p *api.CreatePayload) (graphqlPayload[buildsVariables], error) {
return pc.newPayload(p.Repo, p.Sha, p.Ref, p.RefType+" "+git.RefName(p.Ref).ShortName()+" created", true)
}
// Delete implements PayloadConvertor Delete method
func (pc sourcehutConvertor) Delete(_ *api.DeletePayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// Fork implements PayloadConvertor Fork method
func (pc sourcehutConvertor) Fork(_ *api.ForkPayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// Push implements PayloadConvertor Push method
func (pc sourcehutConvertor) Push(p *api.PushPayload) (graphqlPayload[buildsVariables], error) {
return pc.newPayload(p.Repo, p.HeadCommit.ID, p.Ref, p.HeadCommit.Message, true)
}
// Issue implements PayloadConvertor Issue method
func (pc sourcehutConvertor) Issue(_ *api.IssuePayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// IssueComment implements PayloadConvertor IssueComment method
func (pc sourcehutConvertor) IssueComment(_ *api.IssueCommentPayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// PullRequest implements PayloadConvertor PullRequest method
func (pc sourcehutConvertor) PullRequest(_ *api.PullRequestPayload) (graphqlPayload[buildsVariables], error) {
// TODO
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// Review implements PayloadConvertor Review method
func (pc sourcehutConvertor) Review(_ *api.PullRequestPayload, _ webhook_module.HookEventType) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// Repository implements PayloadConvertor Repository method
func (pc sourcehutConvertor) Repository(_ *api.RepositoryPayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// Wiki implements PayloadConvertor Wiki method
func (pc sourcehutConvertor) Wiki(_ *api.WikiPayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// Release implements PayloadConvertor Release method
func (pc sourcehutConvertor) Release(_ *api.ReleasePayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
func (pc sourcehutConvertor) Package(_ *api.PackagePayload) (graphqlPayload[buildsVariables], error) {
return graphqlPayload[buildsVariables]{}, shared.ErrPayloadTypeNotSupported
}
// mustBuildManifest adjusts the manifest to submit to the builds service
//
// in case of an error the Error field will be set, to be visible by the end-user under recent deliveries
func (pc sourcehutConvertor) newPayload(repo *api.Repository, commitID, ref, note string, trusted bool) (graphqlPayload[buildsVariables], error) {
manifest, err := pc.buildManifest(repo, commitID, ref)
if err != nil {
if len(manifest) == 0 {
return graphqlPayload[buildsVariables]{}, err
}
// the manifest contains an error for the user: log the actual error and construct the payload
// the error will be visible under the "recent deliveries" of the webhook settings.
log.Warn("sourcehut.builds: could not construct manifest for %s: %v", repo.FullName, err)
msg := fmt.Sprintf("%s:%s %s", repo.FullName, ref, manifest)
return graphqlPayload[buildsVariables]{
Error: msg,
}, nil
}
gitRef := git.RefName(ref)
return graphqlPayload[buildsVariables]{
Query: `mutation (
$manifest: String!
$tags: [String!]
$note: String!
$secrets: Boolean!
$execute: Boolean!
$visibility: Visibility!
) {
submit(
manifest: $manifest
tags: $tags
note: $note
secrets: $secrets
execute: $execute
visibility: $visibility
) {
id
}
}`, Variables: buildsVariables{
Manifest: string(manifest),
Tags: []string{repo.FullName, gitRef.RefType() + "/" + gitRef.ShortName(), pc.meta.ManifestPath},
Note: note,
Secrets: pc.meta.Secrets && trusted,
Execute: trusted,
Visibility: cmp.Or(pc.meta.Visibility, "PRIVATE"),
},
}, nil
}
// buildManifest adjusts the manifest to submit to the builds service
// in case of an error the []byte might contain an error that can be displayed to the user
func (pc sourcehutConvertor) buildManifest(repo *api.Repository, commitID, gitRef string) ([]byte, error) {
gitRepo, err := gitrepo.OpenRepository(pc.ctx, repo)
if err != nil {
msg := "could not open repository"
return []byte(msg), fmt.Errorf(msg+": %w", err)
}
defer gitRepo.Close()
commit, err := gitRepo.GetCommit(commitID)
if err != nil {
msg := fmt.Sprintf("could not get commit %q", commitID)
return []byte(msg), fmt.Errorf(msg+": %w", err)
}
entry, err := commit.GetTreeEntryByPath(pc.meta.ManifestPath)
if err != nil {
msg := fmt.Sprintf("could not open manifest %q", pc.meta.ManifestPath)
return []byte(msg), fmt.Errorf(msg+": %w", err)
}
r, err := entry.Blob().DataAsync()
if err != nil {
msg := fmt.Sprintf("could not read manifest %q", pc.meta.ManifestPath)
return []byte(msg), fmt.Errorf(msg+": %w", err)
}
defer r.Close()
var manifest struct {
Image string `yaml:"image"`
Arch string `yaml:"arch,omitempty"`
Packages []string `yaml:"packages,omitempty"`
Repositories map[string]string `yaml:"repositories,omitempty"`
Artifacts []string `yaml:"artifacts,omitempty"`
Shell bool `yaml:"shell,omitempty"`
Sources []string `yaml:"sources"`
Tasks []map[string]string `yaml:"tasks"`
Triggers []string `yaml:"triggers,omitempty"`
Environment map[string]string `yaml:"environment"`
Secrets []string `yaml:"secrets,omitempty"`
Oauth string `yaml:"oauth,omitempty"`
}
if err := yaml.NewDecoder(r).Decode(&manifest); err != nil {
msg := fmt.Sprintf("could not decode manifest %q", pc.meta.ManifestPath)
return []byte(msg), fmt.Errorf(msg+": %w", err)
}
if manifest.Environment == nil {
manifest.Environment = make(map[string]string)
}
manifest.Environment["BUILD_SUBMITTER"] = "forgejo"
manifest.Environment["BUILD_SUBMITTER_URL"] = setting.AppURL
manifest.Environment["GIT_REF"] = gitRef
source := repo.CloneURL + "#" + commitID
found := false
for i, s := range manifest.Sources {
if s == repo.CloneURL {
manifest.Sources[i] = source
found = true
break
}
}
if !found {
manifest.Sources = append(manifest.Sources, source)
}
return yaml.Marshal(manifest)
}