package handler import ( "database/sql" "net/http" "strconv" "time" "github.com/drone/drone/pkg/build/script" "github.com/drone/drone/pkg/database" . "github.com/drone/drone/pkg/model" "github.com/drone/drone/pkg/queue" "github.com/drone/go-github/github" ) type HookHandler struct { queue *queue.Queue } func NewHookHandler(queue *queue.Queue) *HookHandler { return &HookHandler{ queue: queue, } } // Processes a generic POST-RECEIVE hook and // attempts to trigger a build. func (h *HookHandler) Hook(w http.ResponseWriter, r *http.Request) error { // handle github ping if r.Header.Get("X-Github-Event") == "ping" { return RenderText(w, http.StatusText(http.StatusOK), http.StatusOK) } // if this is a pull request route // to a different handler if r.Header.Get("X-Github-Event") == "pull_request" { h.PullRequestHook(w, r) return nil } // get the payload of the message // this should contain a json representation of the // repository and commit details payload := r.FormValue("payload") // parse the github Hook payload hook, err := github.ParseHook([]byte(payload)) if err != nil { println("could not parse hook") return RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) } // make sure this is being triggered because of a commit // and not something like a tag deletion or whatever if hook.IsTag() || hook.IsGithubPages() || hook.IsHead() == false || hook.IsDeleted() { return RenderText(w, http.StatusText(http.StatusOK), http.StatusOK) } // get the repo from the URL repoId := r.FormValue("id") // get the repo from the database, return error if not found repo, err := database.GetRepoSlug(repoId) if err != nil { return RenderText(w, http.StatusText(http.StatusNotFound), http.StatusNotFound) } // Get the user that owns the repository user, err := database.GetUser(repo.UserID) if err != nil { return RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) } // Verify that the commit doesn't already exist. // We should never build the same commit twice. _, err = database.GetCommitHash(hook.Head.Id, repo.ID) if err != nil && err != sql.ErrNoRows { println("commit already exists") return RenderText(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway) } // we really only need: // * repo owner // * repo name // * repo host (github) // * commit hash // * commit timestamp // * commit branch // * commit message // * commit author // * pull request // once we have this data we could just send directly to the queue // and let it handle everything else commit := &Commit{} commit.RepoID = repo.ID commit.Branch = hook.Branch() commit.Hash = hook.Head.Id commit.Status = "Pending" commit.Created = time.Now().UTC() // extract the author and message from the commit // this is kind of experimental, since I don't know // what I'm doing here. if hook.Head != nil && hook.Head.Author != nil { commit.Message = hook.Head.Message commit.Timestamp = hook.Head.Timestamp commit.SetAuthor(hook.Head.Author.Email) } else if hook.Commits != nil && len(hook.Commits) > 0 && hook.Commits[0].Author != nil { commit.Message = hook.Commits[0].Message commit.Timestamp = hook.Commits[0].Timestamp commit.SetAuthor(hook.Commits[0].Author.Email) } // get the github settings from the database settings := database.SettingsMust() // get the drone.yml file from GitHub client := github.New(user.GithubToken) client.ApiUrl = settings.GitHubApiUrl content, err := client.Contents.FindRef(repo.Owner, repo.Name, ".drone.yml", commit.Hash) if err != nil { msg := "No .drone.yml was found in this repository. You need to add one.\n" if err := saveFailedBuild(commit, msg); err != nil { return RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) } return RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) } // decode the content. Note: Not sure this will ever happen...it basically means a GitHub API issue raw, err := content.DecodeContent() if err != nil { msg := "Could not decode the yaml from GitHub. Check that your .drone.yml is a valid yaml file.\n" if err := saveFailedBuild(commit, msg); err != nil { return RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) } return RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) } // parse the build script buildscript, err := script.ParseBuild(raw, repo.Params) if err != nil { msg := "Could not parse your .drone.yml file. It needs to be a valid drone yaml file.\n\n" + err.Error() + "\n" if err := saveFailedBuild(commit, msg); err != nil { return RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) } return RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) } // save the commit to the database if err := database.SaveCommit(commit); err != nil { return RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) } // save the build to the database build := &Build{} build.Slug = "1" // TODO build.CommitID = commit.ID build.Created = time.Now().UTC() build.Status = "Pending" if err := database.SaveBuild(build); err != nil { return RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) } // notify websocket that a new build is pending //realtime.CommitPending(repo.UserID, repo.TeamID, repo.ID, commit.ID, repo.Private) //realtime.BuildPending(repo.UserID, repo.TeamID, repo.ID, commit.ID, build.ID, repo.Private) h.queue.Add(&queue.BuildTask{Repo: repo, Commit: commit, Build: build, Script: buildscript}) //Push(repo, commit, build, buildscript) // OK! return RenderText(w, http.StatusText(http.StatusOK), http.StatusOK) } func (h *HookHandler) PullRequestHook(w http.ResponseWriter, r *http.Request) { // get the payload of the message // this should contain a json representation of the // repository and commit details payload := r.FormValue("payload") println("GOT PR HOOK") println(payload) hook, err := github.ParsePullRequestHook([]byte(payload)) if err != nil { RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) return } // ignore these if hook.Action != "opened" && hook.Action != "synchronize" { RenderText(w, http.StatusText(http.StatusOK), http.StatusOK) return } // get the repo from the URL repoId := r.FormValue("id") // get the repo from the database, return error if not found repo, err := database.GetRepoSlug(repoId) if err != nil { RenderText(w, http.StatusText(http.StatusNotFound), http.StatusNotFound) return } // Get the user that owns the repository user, err := database.GetUser(repo.UserID) if err != nil { RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) return } // Verify that the commit doesn't already exist. // We should enver build the same commit twice. _, err = database.GetCommitHash(hook.PullRequest.Head.Sha, repo.ID) if err != nil && err != sql.ErrNoRows { RenderText(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway) return } /////////////////////////////////////////////////////// commit := &Commit{} commit.RepoID = repo.ID commit.Branch = hook.PullRequest.Head.Ref commit.Hash = hook.PullRequest.Head.Sha commit.Status = "Pending" commit.Created = time.Now().UTC() commit.Gravatar = hook.PullRequest.User.GravatarId commit.Author = hook.PullRequest.User.Login commit.PullRequest = strconv.Itoa(hook.Number) commit.Message = hook.PullRequest.Title // label := p.PullRequest.Head.Labe // get the github settings from the database settings := database.SettingsMust() // get the drone.yml file from GitHub client := github.New(user.GithubToken) client.ApiUrl = settings.GitHubApiUrl content, err := client.Contents.FindRef(repo.Owner, repo.Name, ".drone.yml", commit.Hash) // TODO should this really be the hash?? if err != nil { println(err.Error()) RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) return } // decode the content raw, err := content.DecodeContent() if err != nil { RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) return } // parse the build script buildscript, err := script.ParseBuild(raw, repo.Params) if err != nil { // TODO if the YAML is invalid we should create a commit record // with an ERROR status so that the user knows why a build wasn't // triggered in the system RenderText(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest) return } // save the commit to the database if err := database.SaveCommit(commit); err != nil { RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) return } // save the build to the database build := &Build{} build.Slug = "1" // TODO build.CommitID = commit.ID build.Created = time.Now().UTC() build.Status = "Pending" if err := database.SaveBuild(build); err != nil { RenderText(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) return } // notify websocket that a new build is pending // TODO we should, for consistency, just put this inside Queue.Add() h.queue.Add(&queue.BuildTask{Repo: repo, Commit: commit, Build: build, Script: buildscript}) // OK! RenderText(w, http.StatusText(http.StatusOK), http.StatusOK) } // Helper method for saving a failed build or commit in the case where it never starts to build. // This can happen if the yaml is bad or doesn't exist. func saveFailedBuild(commit *Commit, msg string) error { // Set the commit to failed commit.Status = "Failure" commit.Created = time.Now().UTC() commit.Finished = commit.Created commit.Duration = 0 if err := database.SaveCommit(commit); err != nil { return err } // save the build to the database build := &Build{} build.Slug = "1" // TODO: This should not be hardcoded build.CommitID = commit.ID build.Created = time.Now().UTC() build.Finished = build.Created commit.Duration = 0 build.Status = "Failure" build.Stdout = msg if err := database.SaveBuild(build); err != nil { return err } // TODO: Should the status be Error instead of Failure? // TODO: Do we need to update the branch table too? return nil }