package main import ( "bytes" "context" "encoding/json" "flag" "fmt" "io/ioutil" "log" "net/http" "os" "path" "regexp" "runtime" "sort" "strings" "sync" "time" "github.com/Masterminds/semver/v3" "github.com/codeclysm/extract" "github.com/docker/docker/api/types" "github.com/docker/docker/api/types/container" "github.com/docker/docker/api/types/mount" "github.com/docker/docker/api/types/volume" "github.com/docker/docker/client" "github.com/docker/go-connections/nat" ) var ( flagTempDir = flag.String("tmp", "tmp", "Path to temporary directory to dump tarballs to") flagFrom = flag.String("from", "0.1.0", "The version to start from e.g '0.3.1'.") flagTo = flag.String("to", "HEAD", "The version to end on e.g '0.3.3'.") flagBuildConcurrency = flag.Int("build-concurrency", runtime.NumCPU(), "The amount of build concurrency when building images") alphaNumerics = regexp.MustCompile("[^a-zA-Z0-9]+") ) // Embed the Dockerfile to use when building dendrite versions. // We cannot use the dockerfile associated with the repo with each version sadly due to changes in // Docker versions. Specifically, earlier Dendrite versions are incompatible with newer Docker clients // due to the error: // When using COPY with more than one source file, the destination must be a directory and end with a / // We need to run a postgres anyway, so use the dockerfile associated with Complement instead. const Dockerfile = `FROM golang:1.13-stretch as build RUN apt-get update && apt-get install -y postgresql WORKDIR /build # Copy the build context to the repo as this is the right dendrite code. This is different to the # Complement Dockerfile which wgets a branch. COPY . . RUN go build ./cmd/dendrite-monolith-server RUN go build ./cmd/generate-keys RUN go build ./cmd/generate-config RUN ./generate-config --ci > dendrite.yaml RUN ./generate-keys --private-key matrix_key.pem --tls-cert server.crt --tls-key server.key # Replace the connection string with a single postgres DB, using user/db = 'postgres' and no password RUN sed -i "s%connection_string:.*$%connection_string: postgresql://postgres@localhost/postgres?sslmode=disable%g" dendrite.yaml # No password when connecting over localhost RUN sed -i "s%127.0.0.1/32 md5%127.0.0.1/32 trust%g" /etc/postgresql/9.6/main/pg_hba.conf # Bump up max conns for moar concurrency RUN sed -i 's/max_connections = 100/max_connections = 2000/g' /etc/postgresql/9.6/main/postgresql.conf RUN sed -i 's/max_open_conns:.*$/max_open_conns: 100/g' dendrite.yaml # This entry script starts postgres, waits for it to be up then starts dendrite RUN echo '\ #!/bin/bash -eu \n\ pg_lsclusters \n\ pg_ctlcluster 9.6 main start \n\ \n\ until pg_isready \n\ do \n\ echo "Waiting for postgres"; \n\ sleep 1; \n\ done \n\ \n\ sed -i "s/server_name: localhost/server_name: ${SERVER_NAME}/g" dendrite.yaml \n\ ./dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml \n\ ' > run_dendrite.sh && chmod +x run_dendrite.sh ENV SERVER_NAME=localhost EXPOSE 8008 8448 CMD /build/run_dendrite.sh ` // downloadArchive downloads an arbitrary github archive of the form: // https://github.com/matrix-org/dendrite/archive/v0.3.11.tar.gz // and re-tarballs it without the top-level directory which contains branch information. It inserts // the contents of `dockerfile` as a root file `Dockerfile` in the re-tarballed directory such that // you can directly feed the retarballed archive to `ImageBuild` to have it run said dockerfile. // Returns the tarball buffer on success. func downloadArchive(cli *http.Client, tmpDir, archiveURL string, dockerfile []byte) (*bytes.Buffer, error) { resp, err := cli.Get(archiveURL) if err != nil { return nil, err } // nolint:errcheck defer resp.Body.Close() if resp.StatusCode != 200 { return nil, fmt.Errorf("got HTTP %d", resp.StatusCode) } if err = os.Mkdir(tmpDir, os.ModePerm); err != nil { return nil, fmt.Errorf("failed to make temporary directory: %s", err) } // nolint:errcheck defer os.RemoveAll(tmpDir) // dump the tarball temporarily, stripping the top-level directory err = extract.Archive(context.Background(), resp.Body, tmpDir, func(inPath string) string { // remove top level segments := strings.Split(inPath, "/") return strings.Join(segments[1:], "/") }) if err != nil { return nil, err } // add top level Dockerfile err = ioutil.WriteFile(path.Join(tmpDir, "Dockerfile"), dockerfile, os.ModePerm) if err != nil { return nil, fmt.Errorf("failed to inject /Dockerfile: %w", err) } // now re-tarball it :/ var tarball bytes.Buffer err = compress(tmpDir, &tarball) if err != nil { return nil, err } return &tarball, nil } // buildDendrite builds Dendrite on the branchOrTagName given. Returns the image ID or an error func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir, branchOrTagName string) (string, error) { log.Printf("%s: Downloading version %s to %s\n", branchOrTagName, branchOrTagName, tmpDir) // pull an archive, this contains a top-level directory which screws with the build context // which we need to fix up post download u := fmt.Sprintf("https://github.com/matrix-org/dendrite/archive/%s.tar.gz", branchOrTagName) tarball, err := downloadArchive(httpClient, tmpDir, u, []byte(Dockerfile)) if err != nil { return "", fmt.Errorf("failed to download archive %s: %w", u, err) } log.Printf("%s: %s => %d bytes\n", branchOrTagName, u, tarball.Len()) log.Printf("%s: Building version %s\n", branchOrTagName, branchOrTagName) res, err := dockerClient.ImageBuild(context.Background(), tarball, types.ImageBuildOptions{ Tags: []string{"dendrite-upgrade"}, }) if err != nil { return "", fmt.Errorf("failed to start building image: %s", err) } // nolint:errcheck defer res.Body.Close() decoder := json.NewDecoder(res.Body) // {"aux":{"ID":"sha256:247082c717963bc2639fc2daed08838d67811ea12356cd4fda43e1ffef94f2eb"}} var imageID string for decoder.More() { var dl struct { Stream string `json:"stream"` Aux map[string]interface{} `json:"aux"` } if err := decoder.Decode(&dl); err != nil { return "", fmt.Errorf("failed to decode build image output line: %w", err) } log.Printf("%s: %s", branchOrTagName, dl.Stream) if dl.Aux != nil { imgID, ok := dl.Aux["ID"] if ok { imageID = imgID.(string) } } } return imageID, nil } func getAndSortVersionsFromGithub(httpClient *http.Client) (semVers []*semver.Version, err error) { u := "https://api.github.com/repos/matrix-org/dendrite/tags" res, err := httpClient.Get(u) if err != nil { return nil, err } if res.StatusCode != 200 { return nil, fmt.Errorf("%s returned HTTP %d", u, res.StatusCode) } resp := []struct { Name string `json:"name"` }{} if err = json.NewDecoder(res.Body).Decode(&resp); err != nil { return nil, err } for _, r := range resp { v, err := semver.NewVersion(r.Name) if err != nil { continue // not a semver, that's ok and isn't an error, we allow tags that aren't semvers } semVers = append(semVers, v) } sort.Sort(semver.Collection(semVers)) return semVers, nil } func calculateVersions(cli *http.Client, from, to string) []string { semvers, err := getAndSortVersionsFromGithub(cli) if err != nil { log.Fatalf("failed to collect semvers from github: %s", err) } // snip the lower bound depending on --from if from != "" { fromVer, err := semver.NewVersion(from) if err != nil { log.Fatalf("invalid --from: %s", err) } i := 0 for i = 0; i < len(semvers); i++ { if semvers[i].LessThan(fromVer) { continue } break } semvers = semvers[i:] } if to != "" && to != "HEAD" { toVer, err := semver.NewVersion(to) if err != nil { log.Fatalf("invalid --to: %s", err) } var i int for i = len(semvers) - 1; i >= 0; i-- { if semvers[i].GreaterThan(toVer) { continue } break } semvers = semvers[:i+1] } var versions []string for _, sv := range semvers { versions = append(versions, sv.Original()) } if to == "HEAD" { versions = append(versions, "HEAD") } return versions } func buildDendriteImages(httpClient *http.Client, dockerClient *client.Client, baseTempDir string, concurrency int, branchOrTagNames []string) map[string]string { // concurrently build all versions, this can be done in any order. The mutex protects the map branchToImageID := make(map[string]string) var mu sync.Mutex var wg sync.WaitGroup wg.Add(concurrency) ch := make(chan string, len(branchOrTagNames)) for _, branchName := range branchOrTagNames { ch <- branchName } close(ch) for i := 0; i < concurrency; i++ { go func() { defer wg.Done() for branchName := range ch { tmpDir := baseTempDir + alphaNumerics.ReplaceAllString(branchName, "") imgID, err := buildDendrite(httpClient, dockerClient, tmpDir, branchName) if err != nil { log.Fatalf("%s: failed to build dendrite image: %s", branchName, err) } mu.Lock() branchToImageID[branchName] = imgID mu.Unlock() } }() } wg.Wait() return branchToImageID } func runImage(dockerClient *client.Client, volumeName, version, imageID string) (csAPIURL, containerID string, err error) { log.Printf("%s: running image %s\n", version, imageID) ctx, cancel := context.WithTimeout(context.Background(), 3*time.Minute) defer cancel() body, err := dockerClient.ContainerCreate(ctx, &container.Config{ Image: imageID, Env: []string{"SERVER_NAME=hs1"}, }, &container.HostConfig{ PublishAllPorts: true, Mounts: []mount.Mount{ { Type: mount.TypeVolume, Source: volumeName, Target: "/var/lib/postgresql/9.6/main", }, }, }, nil, nil, "dendrite_upgrade_test_"+version) if err != nil { return "", "", fmt.Errorf("failed to ContainerCreate: %s", err) } containerID = body.ID err = dockerClient.ContainerStart(ctx, containerID, types.ContainerStartOptions{}) if err != nil { return "", "", fmt.Errorf("failed to ContainerStart: %s", err) } inspect, err := dockerClient.ContainerInspect(ctx, containerID) if err != nil { return "", "", err } csapiPortInfo, ok := inspect.NetworkSettings.Ports[nat.Port("8008/tcp")] if !ok { return "", "", fmt.Errorf("port 8008 not exposed - exposed ports: %v", inspect.NetworkSettings.Ports) } baseURL := fmt.Sprintf("http://localhost:%s", csapiPortInfo[0].HostPort) versionsURL := fmt.Sprintf("%s/_matrix/client/versions", baseURL) // hit /versions to check it is up var lastErr error for i := 0; i < 500; i++ { res, err := http.Get(versionsURL) if err != nil { lastErr = fmt.Errorf("GET %s => error: %s", versionsURL, err) time.Sleep(50 * time.Millisecond) continue } if res.StatusCode != 200 { lastErr = fmt.Errorf("GET %s => HTTP %s", versionsURL, res.Status) time.Sleep(50 * time.Millisecond) continue } lastErr = nil break } if lastErr != nil { logs, err := dockerClient.ContainerLogs(context.Background(), containerID, types.ContainerLogsOptions{ ShowStdout: true, ShowStderr: true, }) // ignore errors when cannot get logs, it's just for debugging anyways if err == nil { logbody, err := ioutil.ReadAll(logs) if err == nil { log.Printf("Container logs:\n\n%s\n\n", string(logbody)) } } } return baseURL, containerID, lastErr } func destroyContainer(dockerClient *client.Client, containerID string) { err := dockerClient.ContainerRemove(context.TODO(), containerID, types.ContainerRemoveOptions{ Force: true, }) if err != nil { log.Printf("failed to remove container %s : %s", containerID, err) } } func loadAndRunTests(dockerClient *client.Client, volumeName, v string, branchToImageID map[string]string) error { csAPIURL, containerID, err := runImage(dockerClient, volumeName, v, branchToImageID[v]) if err != nil { return fmt.Errorf("failed to run container for branch %v: %v", v, err) } defer destroyContainer(dockerClient, containerID) log.Printf("URL %s -> %s \n", csAPIURL, containerID) if err = runTests(csAPIURL, v); err != nil { return fmt.Errorf("failed to run tests on version %s: %s", v, err) } return nil } func verifyTests(dockerClient *client.Client, volumeName string, versions []string, branchToImageID map[string]string) error { lastVer := versions[len(versions)-1] csAPIURL, containerID, err := runImage(dockerClient, volumeName, lastVer, branchToImageID[lastVer]) if err != nil { return fmt.Errorf("failed to run container for branch %v: %v", lastVer, err) } defer destroyContainer(dockerClient, containerID) return verifyTestsRan(csAPIURL, versions) } func main() { flag.Parse() httpClient := &http.Client{ Timeout: 60 * time.Second, } dockerClient, err := client.NewClientWithOpts(client.FromEnv) if err != nil { log.Fatalf("failed to make docker client: %s", err) } if *flagFrom == "" { flag.Usage() os.Exit(1) } versions := calculateVersions(httpClient, *flagFrom, *flagTo) log.Printf("Testing dendrite versions: %v\n", versions) branchToImageID := buildDendriteImages(httpClient, dockerClient, *flagTempDir, *flagBuildConcurrency, versions) // make a shared postgres volume volume, err := dockerClient.VolumeCreate(context.Background(), volume.VolumeCreateBody{ Name: "dendrite_upgrade_test", }) if err != nil { log.Fatalf("failed to make docker volume: %s", err) } failed := false defer func() { perr := recover() log.Println("removing postgres volume") verr := dockerClient.VolumeRemove(context.Background(), volume.Name, true) if perr == nil { perr = verr } if perr != nil { panic(perr) } if failed { os.Exit(1) } }() // run through images sequentially for _, v := range versions { if err = loadAndRunTests(dockerClient, volume.Name, v, branchToImageID); err != nil { log.Printf("failed to run tests for %v: %s\n", v, err) failed = true break } } if err := verifyTests(dockerClient, volume.Name, versions, branchToImageID); err != nil { log.Printf("failed to verify test results: %s", err) failed = true } }