From 20827f933319074f487a16af012faa60adc25f9a Mon Sep 17 00:00:00 2001 From: Sam Ban Date: Fri, 27 Sep 2019 09:35:47 +0100 Subject: [PATCH] hardcoded bits --- .gitignore | 1 + Makefile | 9 ++ blinker/Dockerfile | 8 + blinker/auth.html | 39 +++++ blinker/blinker | 28 ++++ blinker/config.yml | 17 ++ blinker/index.html | 28 ++++ blinker/load.html | 203 ++++++++++++++++++++++++ config.yml.example | 11 ++ go.mod | 14 ++ go.sum | 145 +++++++++++++++++ traefiker.go | 377 +++++++++++++++++++++++++++++++++++++++++++++ 12 files changed, 880 insertions(+) create mode 100644 .gitignore create mode 100644 Makefile create mode 100644 blinker/Dockerfile create mode 100644 blinker/auth.html create mode 100755 blinker/blinker create mode 100644 blinker/config.yml create mode 100644 blinker/index.html create mode 100644 blinker/load.html create mode 100644 config.yml.example create mode 100644 go.mod create mode 100644 go.sum create mode 100644 traefiker.go diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..2b799a6 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +traefiker diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..5d08278 --- /dev/null +++ b/Makefile @@ -0,0 +1,9 @@ +.PHONY: install linux +all: + go build . + +linux: + GOOS=linux go build . && goupx traefiker + +install: linux + scp traefiker blinker:blinker/ diff --git a/blinker/Dockerfile b/blinker/Dockerfile new file mode 100644 index 0000000..fd77b69 --- /dev/null +++ b/blinker/Dockerfile @@ -0,0 +1,8 @@ +FROM scratch +ADD blinker / +ADD config.yml / +ADD index.html / +ADD load.html / +ADD auth.html / +EXPOSE 80/tcp +CMD ["/blinker","serve"] diff --git a/blinker/auth.html b/blinker/auth.html new file mode 100644 index 0000000..48b49fa --- /dev/null +++ b/blinker/auth.html @@ -0,0 +1,39 @@ + + +
+ + + + + +
+ + +

Please reload the page if it doesn't reload.

+ + + diff --git a/blinker/blinker b/blinker/blinker new file mode 100755 index 0000000..432b6f5 --- /dev/null +++ b/blinker/blinker @@ -0,0 +1,28 @@ + + + + + + +
+

Welcome!

+ Please see our BigCommerce deals at + gpmd.co.uk/bigcommerce +
+ + diff --git a/blinker/config.yml b/blinker/config.yml new file mode 100644 index 0000000..0b307bd --- /dev/null +++ b/blinker/config.yml @@ -0,0 +1,17 @@ +balanceme: + db: root:myohmy69@(mysql:3306)/blinker?parseTime=true + client: 27t27zo6uxju556q6biq9a6129dryjg + token: 1u4bq84z36psc8q6npidp8gt7vc2m5k + store: o1p74e2tyg + redis: redis:6379 + hostname: blinker.gpmd.net + ssl: false +auth: + auth_url: https://login.bigcommerce.com/oauth2/authorize + token_url: https://login.bigcommerce.com/oauth2/token + + scopes: # https://developer.bigcommerce.com/api-docs/getting-started/authentication#authentication_oauth-scopes + - store_v2_content_read_only + - store_v2_default + - store_v2_products_read_only + - users_basic_information diff --git a/blinker/index.html b/blinker/index.html new file mode 100644 index 0000000..432b6f5 --- /dev/null +++ b/blinker/index.html @@ -0,0 +1,28 @@ + + + + + + +
+

Welcome!

+ Please see our BigCommerce deals at + gpmd.co.uk/bigcommerce +
+ + diff --git a/blinker/load.html b/blinker/load.html new file mode 100644 index 0000000..433397d --- /dev/null +++ b/blinker/load.html @@ -0,0 +1,203 @@ + + +
+ + + + + + + + + + + + +
+ +
+ + Sync + + + + + + + + + + + + +
+ + + + + diff --git a/config.yml.example b/config.yml.example new file mode 100644 index 0000000..1ac2896 --- /dev/null +++ b/config.yml.example @@ -0,0 +1,11 @@ +traefiker: + name: blinker # Docker container name +docker: + links: ["traefik_mysql_1:mysql", "traefik_redis_1:redis"] # Linked containers, "docker_name:internal_name" format + networks: ["traefik_web"] +labels: + traefik.backend: blinker # Same as traefiker.name above + traefik.docker.network: traefik_web # Same as traefiker.network above + traefik.frontend.rule: Host: linker.gpmd.net + traefik.frontend.entryPoints: https + traefik.port: 80 # exposed port from Docker image diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..ffc5c81 --- /dev/null +++ b/go.mod @@ -0,0 +1,14 @@ +module github.com/gpmd/traefiker + +go 1.13 + +require ( + github.com/docker/distribution v2.7.1+incompatible // indirect + github.com/docker/docker v1.13.1 + github.com/docker/go-connections v0.4.0 + github.com/docker/go-units v0.4.0 // indirect + github.com/opencontainers/go-digest v1.0.0-rc1 // indirect + github.com/pkg/errors v0.8.1 // indirect + github.com/spf13/viper v1.4.0 + golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..edabddb --- /dev/null +++ b/go.sum @@ -0,0 +1,145 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= +github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= +github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= +github.com/beorn7/perks 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"context" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "log" + "os" + "strconv" + "strings" + "sync" + "time" + + "path/filepath" + + "github.com/spf13/viper" + + "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/network" + "github.com/docker/docker/client" +) + +// AuthInfo stores a users' docker registry/hub info +var AuthInfo sync.Map + +func main() { + + log.Println("Starting...") + viper.SetConfigName("config") + viper.AddConfigPath(".") // optionally look for config in the working directory + err := viper.ReadInConfig() // Find and read the config file + if err != nil { // Handle errors reading the config file + panic(fmt.Errorf("fatal error config file: %v", err)) + } + conf := viper.GetStringMapString("traefiker") + dockerconf := viper.GetStringMapStringSlice("docker") + + cli, err := client.NewEnvClient() + E(err) + ctx := context.Background() + d := Docker{cli: cli} + + old := map[string]string{} + for _, s := range d.List() { + if s.Image == conf["name"] { + old[s.ID] = s.ID + } + log.Println(s.Image) + } + + name, err := BuildDockerImage(ctx, conf, d.cli) + E(err) + + d.Run(ctx, name, "", map[string]string{ + "traefik.backend": name, + "traefik.docker.network": "traefik_web", + "traefik.frontend.rule": "Host:" + conf["host"], + "traefik.frontend.entryPoints": "https", + "traefik.port": "80", + }, dockerconf) + newid := "" + for _, s := range d.List() { + if _, ok := old[s.ID]; !ok { + if s.Image == name { + newid = s.ID + } + } + } + if newid != "" { + for _, id := range old { + log.Println("Stopping", id) + d.StopContainer(ctx, id) + } + } +} + +type Docker struct { + cli *client.Client + list []types.Container +} + +func E(err error) { + if err != nil { + panic(err) + } +} + +func (d *Docker) Run(ctx context.Context, imagename, imageurl string, labels map[string]string, conf map[string][]string) string { + // hostBinding := nat.PortBinding{ + // HostIP: "0.0.0.0", + // HostPort: "8000", + // } + // containerPort, err := nat.NewPort("tcp", "80") + // if err != nil { + // panic("Unable to get the port") + // } + + if imageurl != "" { + reader, err := d.cli.ImagePull(ctx, imageurl, types.ImagePullOptions{}) + if err != nil { + panic(err) + } + io.Copy(os.Stdout, reader) + } + + nets, err := d.cli.NetworkList(ctx, types.NetworkListOptions{}) + netid := "" + for _, n := range nets { + if n.Name == "traefik_web" { + netid = n.ID + } + } + + mm := []mount.Mount{} + + for _, l := range conf["mounts"] { + ll := strings.Split(l, ":") + if len(ll) != 2 { + log.Panicf("Mounts in config.yml (%v) have line %s where 'from:to' is not correct", conf["mounts"], l) + } + mm = append(mm, mount.Mount{ + Type: mount.TypeBind, + Source: ll[0], + Target: ll[1], + }) + } + + // portBinding := nat.PortMap{containerPort: []nat.PortBinding{hostBinding}} + cont, err := d.cli.ContainerCreate( + context.Background(), + &container.Config{ + Image: imagename, + Labels: labels, + }, + &container.HostConfig{ + NetworkMode: "traefik_web", + RestartPolicy: container.RestartPolicy{MaximumRetryCount: 0}, + Mounts: mm, + // PortBindings: portBinding, + // Links: []string{"traefik_mysql_1:mysql", "traefik_redis_1:redis"}, + }, nil, imagename+"_"+strconv.FormatInt(time.Now().UTC().Unix(), 32)) + E(err) + d.cli.ContainerStart(ctx, cont.ID, types.ContainerStartOptions{}) + d.cli.NetworkConnect(ctx, + netid, + cont.ID, + &network.EndpointSettings{ + Links: conf["links"], + }, + ) + fmt.Println("Links:", conf["links"]) + return cont.ID +} + +// List lists all containers +func (d *Docker) List() []types.Container { + containers, err := d.cli.ContainerList(context.Background(), types.ContainerListOptions{}) + E(err) + d.list = []types.Container{} + for _, container := range containers { + d.list = append(d.list, container) + } + return d.list +} + +func (d *Docker) StopContainer(ctx context.Context, containerID string) { + err := d.cli.ContainerStop(ctx, containerID, nil) + E(err) +} + +// APIClient is meli's client to interact with the docker daemon server +type APIClient interface { + // we implement this interface so that we can be able to mock it in tests + // https://medium.com/@zach_4342/dependency-injection-in-golang-e587c69478a8 + ImagePull(ctx context.Context, ref string, options types.ImagePullOptions) (io.ReadCloser, error) + ImageBuild(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) + ContainerCreate(ctx context.Context, config *container.Config, hostConfig *container.HostConfig, networkingConfig *network.NetworkingConfig, containerName string) (container.ContainerCreateCreatedBody, error) + ContainerStart(ctx context.Context, containerID string, options types.ContainerStartOptions) error + ContainerLogs(ctx context.Context, container string, options types.ContainerLogsOptions) (io.ReadCloser, error) + NetworkList(ctx context.Context, options types.NetworkListOptions) ([]types.NetworkResource, error) + NetworkCreate(ctx context.Context, name string, options types.NetworkCreate) (types.NetworkCreateResponse, error) + NetworkConnect(ctx context.Context, networkID, containerID string, config *network.EndpointSettings) error + ContainerList(ctx context.Context, options types.ContainerListOptions) ([]types.Container, error) + ContainerRemove(ctx context.Context, containerID string, options types.ContainerRemoveOptions) error +} + +type imageProgress struct { + Status string `json:"status,omitempty"` + Stream string `json:"stream,omitempty"` + Progress string `json:"progress,omitempty"` + ProgressDetail string `json:"progressDetail,omitempty"` +} + +// this is taken from io.util +var blackHolePool = sync.Pool{ + New: func() interface{} { + // TODO: change this size accordingly + // we could find the size of the file we want to tar + // then pass that in as the size. That way we will + // always create a right sized slice and not have to incure cost of slice regrowth(if any) + b := make([]byte, 512) + return &b + }, +} + +// this is taken from io.util +func poolReadFrom(r io.Reader) (n int64, err error) { + bufp := blackHolePool.Get().(*[]byte) + // reset the buffer since it may contain data from a previous round + // see issues/118 + for i := range *bufp { + (*bufp)[i] = 0 + + } + readSize := 0 + for { + readSize, err = r.Read(*bufp) + n += int64(readSize) + if err != nil { + blackHolePool.Put(bufp) + if err == io.EOF { + return n, nil + } + return + } + } +} + +func walkFnClosure(src string, tw *tar.Writer, buf *bytes.Buffer) filepath.WalkFunc { + return func(path string, info os.FileInfo, err error) error { + log.Println("Walking in ", path) + if err != nil { + // todo: maybe we should return nil + return err + } + + tarHeader, err := tar.FileInfoHeader(info, info.Name()) + if err != nil { + return err + } + // update the name to correctly reflect the desired destination when untaring + // https://medium.com/@skdomino/taring-untaring-files-in-go-6b07cf56bc07 + tarHeader.Name = strings.TrimPrefix(strings.Replace(path, src, "", -1), string(filepath.Separator)) + if src == "." { + // see: issues/74 + tarHeader.Name = strings.TrimPrefix(path, string(filepath.Separator)) + } + + err = tw.WriteHeader(tarHeader) + if err != nil { + return err + } + // return on directories since there will be no content to tar + if info.Mode().IsDir() { + return nil + } + // return on non-regular files since there will be no content to tar + if !info.Mode().IsRegular() { + // non regular files are like symlinks etc; https://golang.org/src/os/types.go?h=ModeSymlink#L49 + return nil + } + + // open files for taring + f, err := os.Open(path) + if err != nil { + log.Println("Error while tar creation for file", path, err) + return err + } + defer f.Close() + + tr := io.TeeReader(f, tw) + _, err = poolReadFrom(tr) + if err != nil { + return err + } + + return nil + } +} + +func BuildDockerImage(ctx context.Context, conf map[string]string, cli APIClient) (string, error) { + // TODO: I dont like the way we are handling paths here. + // look at dirWithComposeFile in container.go + dockerFilePath := "./Dockerfile" + + dockerFileReader, err := os.Open(dockerFilePath) + if err != nil { + return "", fmt.Errorf("unable to open Dockerfile %v: %v", dockerFilePath, err) + } + readDockerFile, err := ioutil.ReadAll(dockerFileReader) + if err != nil { + return "", fmt.Errorf("unable to read dockerfile %v: %v", dockerFilePath, err) + } + + imageName := conf["name"] + + splitDockerfile := strings.Split(string(readDockerFile), " ") + splitImageName := strings.Split(splitDockerfile[1], "\n") + imgFromDockerfile := splitImageName[0] + + AuthConfigs := make(map[string]types.AuthConfig) + + result, ok := AuthInfo.Load("dockerhub") + if strings.Contains(imgFromDockerfile, "quay") { + result, ok = AuthInfo.Load("quay") + } + if ok { + + authInfo := result.(map[string]string) + registryURL := authInfo["registryURL"] + username := authInfo["username"] + password := authInfo["password"] + + AuthConfigs[registryURL] = types.AuthConfig{Username: username, Password: password} + } else { + log.Println("Can't read auth info, skipping") + } + + buf := new(bytes.Buffer) + tw := tar.NewWriter(buf) + defer tw.Close() + /* + Context is either a path to a directory containing a Dockerfile, or a url to a git repository. + When the value supplied is a relative path, it is interpreted as relative to the location of the Compose file. + This directory is also the build context that is sent to the Docker daemon. + - https://docs.docker.com/compose/compose-file/#context + */ + UserProvidedContextPath := "." + err = filepath.Walk(UserProvidedContextPath, walkFnClosure(UserProvidedContextPath, tw, buf)) + if err != nil { + return "", fmt.Errorf("unable to walk user provided context path %v: %v", UserProvidedContextPath, err) + } + log.Println("Len:", len(buf.Bytes())) + dockerFileTarReader := bytes.NewReader(buf.Bytes()) + log.Println("building...") + imageBuildResponse, err := cli.ImageBuild( + ctx, + dockerFileTarReader, + types.ImageBuildOptions{ + //PullParent: true, + //Squash: true, currently only supported in experimental mode + Tags: []string{imageName}, + Remove: true, //remove intermediary containers after build + NoCache: true, + SuppressOutput: false, + Dockerfile: "./Dockerfile", + Context: dockerFileTarReader, + AuthConfigs: AuthConfigs}) + if err != nil { + return "", fmt.Errorf("unable to build docker image '%v' for service '%v': %v", imageName, os.Args[1], err) + } + + var imgProg imageProgress + scanner := bufio.NewScanner(imageBuildResponse.Body) + for scanner.Scan() { + _ = json.Unmarshal(scanner.Bytes(), &imgProg) + log.Println( + "Build", + imgProg.Status, + imgProg.Progress, + imgProg.Stream) + } + if err := scanner.Err(); err != nil { + fmt.Println(" :unable to log output for image", imageName, err) + } + + imageBuildResponse.Body.Close() + log.Println("built.") + return imageName, nil +}