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forgejo/routers/api/actions/artifacts.go
wxiaoguang 4e2f1ee58d
Refactor web package and context package (#25298)
1. The "web" package shouldn't depends on "modules/context" package,
instead, let each "web context" register themselves to the "web"
package.
2. The old Init/Free doesn't make sense, so simplify it
* The ctx in "Init(ctx)" is never used, and shouldn't be used that way
* The "Free" is never called and shouldn't be called because the SSPI
instance is shared

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-06-18 09:59:09 +02:00

599 lines
18 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package actions
// GitHub Actions Artifacts API Simple Description
//
// 1. Upload artifact
// 1.1. Post upload url
// Post: /api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts?api-version=6.0-preview
// Request:
// {
// "Type": "actions_storage",
// "Name": "artifact"
// }
// Response:
// {
// "fileContainerResourceUrl":"/api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/upload"
// }
// it acquires an upload url for artifact upload
// 1.2. Upload artifact
// PUT: /api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/upload?itemPath=artifact%2Ffilename
// it upload chunk with headers:
// x-tfs-filelength: 1024 // total file length
// content-length: 1024 // chunk length
// x-actions-results-md5: md5sum // md5sum of chunk
// content-range: bytes 0-1023/1024 // chunk range
// we save all chunks to one storage directory after md5sum check
// 1.3. Confirm upload
// PATCH: /api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/upload?itemPath=artifact%2Ffilename
// it confirm upload and merge all chunks to one file, save this file to storage
//
// 2. Download artifact
// 2.1 list artifacts
// GET: /api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts?api-version=6.0-preview
// Response:
// {
// "count": 1,
// "value": [
// {
// "name": "artifact",
// "fileContainerResourceUrl": "/api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/path"
// }
// ]
// }
// 2.2 download artifact
// GET: /api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/path?api-version=6.0-preview
// Response:
// {
// "value": [
// {
// "contentLocation": "/api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/download",
// "path": "artifact/filename",
// "itemType": "file"
// }
// ]
// }
// 2.3 download artifact file
// GET: /api/actions_pipeline/_apis/pipelines/workflows/{run_id}/artifacts/{artifact_id}/download?itemPath=artifact%2Ffilename
// Response:
// download file
//
import (
"compress/gzip"
"crypto/md5"
"encoding/base64"
"errors"
"fmt"
"io"
"net/http"
"sort"
"strconv"
"strings"
"time"
"code.gitea.io/gitea/models/actions"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/storage"
"code.gitea.io/gitea/modules/util"
"code.gitea.io/gitea/modules/web"
web_types "code.gitea.io/gitea/modules/web/types"
)
const (
artifactXTfsFileLengthHeader = "x-tfs-filelength"
artifactXActionsResultsMD5Header = "x-actions-results-md5"
)
const artifactRouteBase = "/_apis/pipelines/workflows/{run_id}/artifacts"
type artifactContextKeyType struct{}
var artifactContextKey = artifactContextKeyType{}
type ArtifactContext struct {
*context.Base
ActionTask *actions.ActionTask
}
func init() {
web.RegisterResponseStatusProvider[*ArtifactContext](func(req *http.Request) web_types.ResponseStatusProvider {
return req.Context().Value(artifactContextKey).(*ArtifactContext)
})
}
func ArtifactsRoutes(prefix string) *web.Route {
m := web.NewRoute()
m.Use(ArtifactContexter())
r := artifactRoutes{
prefix: prefix,
fs: storage.ActionsArtifacts,
}
m.Group(artifactRouteBase, func() {
// retrieve, list and confirm artifacts
m.Combo("").Get(r.listArtifacts).Post(r.getUploadArtifactURL).Patch(r.comfirmUploadArtifact)
// handle container artifacts list and download
m.Group("/{artifact_id}", func() {
m.Put("/upload", r.uploadArtifact)
m.Get("/path", r.getDownloadArtifactURL)
m.Get("/download", r.downloadArtifact)
})
})
return m
}
func ArtifactContexter() func(next http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
base, baseCleanUp := context.NewBaseContext(resp, req)
defer baseCleanUp()
ctx := &ArtifactContext{Base: base}
ctx.AppendContextValue(artifactContextKey, ctx)
// action task call server api with Bearer ACTIONS_RUNTIME_TOKEN
// we should verify the ACTIONS_RUNTIME_TOKEN
authHeader := req.Header.Get("Authorization")
if len(authHeader) == 0 || !strings.HasPrefix(authHeader, "Bearer ") {
ctx.Error(http.StatusUnauthorized, "Bad authorization header")
return
}
authToken := strings.TrimPrefix(authHeader, "Bearer ")
task, err := actions.GetRunningTaskByToken(req.Context(), authToken)
if err != nil {
log.Error("Error runner api getting task: %v", err)
ctx.Error(http.StatusInternalServerError, "Error runner api getting task")
return
}
if err := task.LoadJob(req.Context()); err != nil {
log.Error("Error runner api getting job: %v", err)
ctx.Error(http.StatusInternalServerError, "Error runner api getting job")
return
}
ctx.ActionTask = task
next.ServeHTTP(ctx.Resp, ctx.Req)
})
}
}
type artifactRoutes struct {
prefix string
fs storage.ObjectStorage
}
func (ar artifactRoutes) buildArtifactURL(runID, artifactID int64, suffix string) string {
uploadURL := strings.TrimSuffix(setting.AppURL, "/") + strings.TrimSuffix(ar.prefix, "/") +
strings.ReplaceAll(artifactRouteBase, "{run_id}", strconv.FormatInt(runID, 10)) +
"/" + strconv.FormatInt(artifactID, 10) + "/" + suffix
return uploadURL
}
type getUploadArtifactRequest struct {
Type string
Name string
}
type getUploadArtifactResponse struct {
FileContainerResourceURL string `json:"fileContainerResourceUrl"`
}
func (ar artifactRoutes) validateRunID(ctx *ArtifactContext) (*actions.ActionTask, int64, bool) {
task := ctx.ActionTask
runID := ctx.ParamsInt64("run_id")
if task.Job.RunID != runID {
log.Error("Error runID not match")
ctx.Error(http.StatusBadRequest, "run-id does not match")
return nil, 0, false
}
return task, runID, true
}
// getUploadArtifactURL generates a URL for uploading an artifact
func (ar artifactRoutes) getUploadArtifactURL(ctx *ArtifactContext) {
task, runID, ok := ar.validateRunID(ctx)
if !ok {
return
}
var req getUploadArtifactRequest
if err := json.NewDecoder(ctx.Req.Body).Decode(&req); err != nil {
log.Error("Error decode request body: %v", err)
ctx.Error(http.StatusInternalServerError, "Error decode request body")
return
}
artifact, err := actions.CreateArtifact(ctx, task, req.Name)
if err != nil {
log.Error("Error creating artifact: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
resp := getUploadArtifactResponse{
FileContainerResourceURL: ar.buildArtifactURL(runID, artifact.ID, "upload"),
}
log.Debug("[artifact] get upload url: %s, artifact id: %d", resp.FileContainerResourceURL, artifact.ID)
ctx.JSON(http.StatusOK, resp)
}
// getUploadFileSize returns the size of the file to be uploaded.
// The raw size is the size of the file as reported by the header X-TFS-FileLength.
func (ar artifactRoutes) getUploadFileSize(ctx *ArtifactContext) (int64, int64, error) {
contentLength := ctx.Req.ContentLength
xTfsLength, _ := strconv.ParseInt(ctx.Req.Header.Get(artifactXTfsFileLengthHeader), 10, 64)
if xTfsLength > 0 {
return xTfsLength, contentLength, nil
}
return contentLength, contentLength, nil
}
func (ar artifactRoutes) saveUploadChunk(ctx *ArtifactContext,
artifact *actions.ActionArtifact,
contentSize, runID int64,
) (int64, error) {
contentRange := ctx.Req.Header.Get("Content-Range")
start, end, length := int64(0), int64(0), int64(0)
if _, err := fmt.Sscanf(contentRange, "bytes %d-%d/%d", &start, &end, &length); err != nil {
return -1, fmt.Errorf("parse content range error: %v", err)
}
storagePath := fmt.Sprintf("tmp%d/%d-%d-%d.chunk", runID, artifact.ID, start, end)
// use io.TeeReader to avoid reading all body to md5 sum.
// it writes data to hasher after reading end
// if hash is not matched, delete the read-end result
hasher := md5.New()
r := io.TeeReader(ctx.Req.Body, hasher)
// save chunk to storage
writtenSize, err := ar.fs.Save(storagePath, r, -1)
if err != nil {
return -1, fmt.Errorf("save chunk to storage error: %v", err)
}
// check md5
reqMd5String := ctx.Req.Header.Get(artifactXActionsResultsMD5Header)
chunkMd5String := base64.StdEncoding.EncodeToString(hasher.Sum(nil))
log.Debug("[artifact] check chunk md5, sum: %s, header: %s", chunkMd5String, reqMd5String)
if reqMd5String != chunkMd5String || writtenSize != contentSize {
if err := ar.fs.Delete(storagePath); err != nil {
log.Error("Error deleting chunk: %s, %v", storagePath, err)
}
return -1, fmt.Errorf("md5 not match")
}
log.Debug("[artifact] save chunk %s, size: %d, artifact id: %d, start: %d, end: %d",
storagePath, contentSize, artifact.ID, start, end)
return length, nil
}
// The rules are from https://github.com/actions/toolkit/blob/main/packages/artifact/src/internal/path-and-artifact-name-validation.ts#L32
var invalidArtifactNameChars = strings.Join([]string{"\\", "/", "\"", ":", "<", ">", "|", "*", "?", "\r", "\n"}, "")
func (ar artifactRoutes) uploadArtifact(ctx *ArtifactContext) {
_, runID, ok := ar.validateRunID(ctx)
if !ok {
return
}
artifactID := ctx.ParamsInt64("artifact_id")
artifact, err := actions.GetArtifactByID(ctx, artifactID)
if errors.Is(err, util.ErrNotExist) {
log.Error("Error getting artifact: %v", err)
ctx.Error(http.StatusNotFound, err.Error())
return
} else if err != nil {
log.Error("Error getting artifact: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
// itemPath is generated from upload-artifact action
// it's formatted as {artifact_name}/{artfict_path_in_runner}
itemPath := util.PathJoinRel(ctx.Req.URL.Query().Get("itemPath"))
artifactName := strings.Split(itemPath, "/")[0]
// checkArtifactName checks if the artifact name contains invalid characters.
// If the name contains invalid characters, an error is returned.
if strings.ContainsAny(artifactName, invalidArtifactNameChars) {
log.Error("Error checking artifact name contains invalid character")
ctx.Error(http.StatusBadRequest, err.Error())
return
}
// get upload file size
fileSize, contentLength, err := ar.getUploadFileSize(ctx)
if err != nil {
log.Error("Error getting upload file size: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
// save chunk
chunkAllLength, err := ar.saveUploadChunk(ctx, artifact, contentLength, runID)
if err != nil {
log.Error("Error saving upload chunk: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
// if artifact name is not set, update it
if artifact.ArtifactName == "" {
artifact.ArtifactName = artifactName
artifact.ArtifactPath = itemPath // path in container
artifact.FileSize = fileSize // this is total size of all chunks
artifact.FileCompressedSize = chunkAllLength
artifact.ContentEncoding = ctx.Req.Header.Get("Content-Encoding")
if err := actions.UpdateArtifactByID(ctx, artifact.ID, artifact); err != nil {
log.Error("Error updating artifact: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
}
ctx.JSON(http.StatusOK, map[string]string{
"message": "success",
})
}
// comfirmUploadArtifact comfirm upload artifact.
// if all chunks are uploaded, merge them to one file.
func (ar artifactRoutes) comfirmUploadArtifact(ctx *ArtifactContext) {
_, runID, ok := ar.validateRunID(ctx)
if !ok {
return
}
if err := ar.mergeArtifactChunks(ctx, runID); err != nil {
log.Error("Error merging chunks: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
ctx.JSON(http.StatusOK, map[string]string{
"message": "success",
})
}
type chunkItem struct {
ArtifactID int64
Start int64
End int64
Path string
}
func (ar artifactRoutes) mergeArtifactChunks(ctx *ArtifactContext, runID int64) error {
storageDir := fmt.Sprintf("tmp%d", runID)
var chunks []*chunkItem
if err := ar.fs.IterateObjects(storageDir, func(path string, obj storage.Object) error {
item := chunkItem{Path: path}
if _, err := fmt.Sscanf(path, storageDir+"/%d-%d-%d.chunk", &item.ArtifactID, &item.Start, &item.End); err != nil {
return fmt.Errorf("parse content range error: %v", err)
}
chunks = append(chunks, &item)
return nil
}); err != nil {
return err
}
// group chunks by artifact id
chunksMap := make(map[int64][]*chunkItem)
for _, c := range chunks {
chunksMap[c.ArtifactID] = append(chunksMap[c.ArtifactID], c)
}
for artifactID, cs := range chunksMap {
// get artifact to handle merged chunks
artifact, err := actions.GetArtifactByID(ctx, cs[0].ArtifactID)
if err != nil {
return fmt.Errorf("get artifact error: %v", err)
}
sort.Slice(cs, func(i, j int) bool {
return cs[i].Start < cs[j].Start
})
allChunks := make([]*chunkItem, 0)
startAt := int64(-1)
// check if all chunks are uploaded and in order and clean repeated chunks
for _, c := range cs {
// startAt is -1 means this is the first chunk
// previous c.ChunkEnd + 1 == c.ChunkStart means this chunk is in order
// StartAt is not -1 and c.ChunkStart is not startAt + 1 means there is a chunk missing
if c.Start == (startAt + 1) {
allChunks = append(allChunks, c)
startAt = c.End
}
}
// if the last chunk.End + 1 is not equal to chunk.ChunkLength, means chunks are not uploaded completely
if startAt+1 != artifact.FileCompressedSize {
log.Debug("[artifact] chunks are not uploaded completely, artifact_id: %d", artifactID)
break
}
// use multiReader
readers := make([]io.Reader, 0, len(allChunks))
closeReaders := func() {
for _, r := range readers {
_ = r.(io.Closer).Close() // it guarantees to be io.Closer by the following loop's Open function
}
readers = nil
}
defer closeReaders()
for _, c := range allChunks {
var readCloser io.ReadCloser
if readCloser, err = ar.fs.Open(c.Path); err != nil {
return fmt.Errorf("open chunk error: %v, %s", err, c.Path)
}
readers = append(readers, readCloser)
}
mergedReader := io.MultiReader(readers...)
// if chunk is gzip, decompress it
if artifact.ContentEncoding == "gzip" {
var err error
mergedReader, err = gzip.NewReader(mergedReader)
if err != nil {
return fmt.Errorf("gzip reader error: %v", err)
}
}
// save merged file
storagePath := fmt.Sprintf("%d/%d/%d.chunk", runID%255, artifactID%255, time.Now().UnixNano())
written, err := ar.fs.Save(storagePath, mergedReader, -1)
if err != nil {
return fmt.Errorf("save merged file error: %v", err)
}
if written != artifact.FileSize {
return fmt.Errorf("merged file size is not equal to chunk length")
}
// save storage path to artifact
log.Debug("[artifact] merge chunks to artifact: %d, %s", artifact.ID, storagePath)
artifact.StoragePath = storagePath
artifact.Status = actions.ArtifactStatusUploadConfirmed
if err := actions.UpdateArtifactByID(ctx, artifact.ID, artifact); err != nil {
return fmt.Errorf("update artifact error: %v", err)
}
closeReaders() // close before delete
// drop chunks
for _, c := range cs {
if err := ar.fs.Delete(c.Path); err != nil {
return fmt.Errorf("delete chunk file error: %v", err)
}
}
}
return nil
}
type (
listArtifactsResponse struct {
Count int64 `json:"count"`
Value []listArtifactsResponseItem `json:"value"`
}
listArtifactsResponseItem struct {
Name string `json:"name"`
FileContainerResourceURL string `json:"fileContainerResourceUrl"`
}
)
func (ar artifactRoutes) listArtifacts(ctx *ArtifactContext) {
_, runID, ok := ar.validateRunID(ctx)
if !ok {
return
}
artifacts, err := actions.ListArtifactsByRunID(ctx, runID)
if err != nil {
log.Error("Error getting artifacts: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
artficatsData := make([]listArtifactsResponseItem, 0, len(artifacts))
for _, a := range artifacts {
artficatsData = append(artficatsData, listArtifactsResponseItem{
Name: a.ArtifactName,
FileContainerResourceURL: ar.buildArtifactURL(runID, a.ID, "path"),
})
}
respData := listArtifactsResponse{
Count: int64(len(artficatsData)),
Value: artficatsData,
}
ctx.JSON(http.StatusOK, respData)
}
type (
downloadArtifactResponse struct {
Value []downloadArtifactResponseItem `json:"value"`
}
downloadArtifactResponseItem struct {
Path string `json:"path"`
ItemType string `json:"itemType"`
ContentLocation string `json:"contentLocation"`
}
)
func (ar artifactRoutes) getDownloadArtifactURL(ctx *ArtifactContext) {
_, runID, ok := ar.validateRunID(ctx)
if !ok {
return
}
artifactID := ctx.ParamsInt64("artifact_id")
artifact, err := actions.GetArtifactByID(ctx, artifactID)
if errors.Is(err, util.ErrNotExist) {
log.Error("Error getting artifact: %v", err)
ctx.Error(http.StatusNotFound, err.Error())
return
} else if err != nil {
log.Error("Error getting artifact: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
downloadURL := ar.buildArtifactURL(runID, artifact.ID, "download")
itemPath := util.PathJoinRel(ctx.Req.URL.Query().Get("itemPath"))
respData := downloadArtifactResponse{
Value: []downloadArtifactResponseItem{{
Path: util.PathJoinRel(itemPath, artifact.ArtifactPath),
ItemType: "file",
ContentLocation: downloadURL,
}},
}
ctx.JSON(http.StatusOK, respData)
}
func (ar artifactRoutes) downloadArtifact(ctx *ArtifactContext) {
_, runID, ok := ar.validateRunID(ctx)
if !ok {
return
}
artifactID := ctx.ParamsInt64("artifact_id")
artifact, err := actions.GetArtifactByID(ctx, artifactID)
if errors.Is(err, util.ErrNotExist) {
log.Error("Error getting artifact: %v", err)
ctx.Error(http.StatusNotFound, err.Error())
return
} else if err != nil {
log.Error("Error getting artifact: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
if artifact.RunID != runID {
log.Error("Error dismatch runID and artifactID, task: %v, artifact: %v", runID, artifactID)
ctx.Error(http.StatusBadRequest, err.Error())
return
}
fd, err := ar.fs.Open(artifact.StoragePath)
if err != nil {
log.Error("Error opening file: %v", err)
ctx.Error(http.StatusInternalServerError, err.Error())
return
}
defer fd.Close()
if strings.HasSuffix(artifact.ArtifactPath, ".gz") {
ctx.Resp.Header().Set("Content-Encoding", "gzip")
}
ctx.ServeContent(fd, &context.ServeHeaderOptions{
Filename: artifact.ArtifactName,
LastModified: artifact.CreatedUnix.AsLocalTime(),
})
}