From 72b6ac265e76ee57745c98bd22b5449ffcd43c1d Mon Sep 17 00:00:00 2001 From: David Sauer Date: Tue, 10 Nov 2020 01:19:05 +0100 Subject: [PATCH] execute build and stream logs --- .gitignore | 2 + Dockerfile | 1 + README.md | 17 +- Tiltfile | 75 ++++++ cmd/wedding/main.go | 219 ++++++++++++++++ deployment/Dockerfile | 31 +++ deployment/entrypoint.sh | 2 + deployment/kubernetes.yaml | 85 +++++++ go.mod | 11 + go.sum | 339 +++++++++++++++++++++++++ hack/sniffer/README.md | 7 + hack/sniffer/main.go | 94 +++++++ pkg/build-prune.go | 13 + pkg/build.go | 494 +++++++++++++++++++++++++++++++++++++ pkg/containers-prune.go | 13 + pkg/images-json.go | 9 + pkg/ping.go | 11 + pkg/unsupported.go | 9 + pkg/version.go | 26 ++ pkg/wedding.go | 57 +++++ services/Tiltfile | 12 + services/minio-setup.yaml | 73 ++++++ services/minio.yaml | 100 ++++++++ use-case-1/Dockerfile | 3 + use-case-3/Dockerfile | 1 + use-case-3/Makefile | 2 + use-case-3/Tiltfile | 14 ++ use-case-3/kubernetes.yaml | 36 +++ 28 files changed, 1748 insertions(+), 8 deletions(-) create mode 100644 .gitignore create mode 100644 Dockerfile create mode 100644 Tiltfile create mode 100644 cmd/wedding/main.go create mode 100644 deployment/Dockerfile create mode 100755 deployment/entrypoint.sh create mode 100644 deployment/kubernetes.yaml create mode 100644 go.mod create mode 100644 go.sum create mode 100644 hack/sniffer/README.md create mode 100644 hack/sniffer/main.go create mode 100644 pkg/build-prune.go create mode 100644 pkg/build.go create mode 100644 pkg/containers-prune.go create mode 100644 pkg/images-json.go create mode 100644 pkg/ping.go create mode 100644 pkg/unsupported.go create mode 100644 pkg/version.go create mode 100644 pkg/wedding.go create mode 100644 services/Tiltfile create mode 100644 services/minio-setup.yaml create mode 100644 services/minio.yaml create mode 100644 use-case-1/Dockerfile create mode 100644 use-case-3/Dockerfile create mode 100644 use-case-3/Makefile create mode 100644 use-case-3/Tiltfile create mode 100644 use-case-3/kubernetes.yaml diff --git a/.gitignore b/.gitignore new file mode 100644 index 00000000..cb6bc20c --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +tilt_modules +vendor diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 00000000..67fd3790 --- /dev/null +++ b/Dockerfile @@ -0,0 +1 @@ +FROM alpine diff --git a/README.md b/README.md index 46b686b8..3f5a52d8 100644 --- a/README.md +++ b/README.md @@ -1,18 +1,19 @@ # Wedding Wedding accepts container image builds mocking the http interface of a docker daemon.\ -It schedules builds via jobs to Kubernetes.\ -Images are build using buildkit. +It schedules tasks as jobs to Kubernetes.\ +Images are build using buildkit.\ +Images are taged using skopeo. -This enables Tilt setups using gitlab ci without running a docker in docker daemon or exposing a host docker socket.\ -This avoid to maintain a tilt configuration with (ci) and without (local dev) custom_build. +This enables running Tilt setups in gitlab pipelines without running a docker in docker daemon or exposing a host docker socket.\ +This avoids to maintain a tilt configuration with (ci) and without (local dev) custom_build. ## Use case 1 Using docker cli to build and push an image. ``` bash -export DOCKER_HOST=tcp://wedding:2375 +export DOCKER_HOST=tcp://wedding:2376 docker build -t registry/user/image:tag . ``` @@ -21,7 +22,7 @@ docker build -t registry/user/image:tag . Using tilt to set up and test an environment. ``` bash -export DOCKER_HOST=tcp://wedding:2375 +export DOCKER_HOST=tcp://wedding:2376 tilt ci ``` @@ -31,11 +32,11 @@ Using tilt to set up a development environment without a running local docker. _Terminal 1_ ``` bash -kubectl -n wedding port-forward svc/wedding 2375:2375 +kubectl -n wedding port-forward svc/wedding 2376:2376 ``` _Terminal 2_ ``` bash -export DOCKER_HOST=tcp://127.0.07:2375 +export DOCKER_HOST=tcp://127.0.07:2376 tilt up ``` diff --git a/Tiltfile b/Tiltfile new file mode 100644 index 00000000..757156f0 --- /dev/null +++ b/Tiltfile @@ -0,0 +1,75 @@ +disable_snapshots() +allow_k8s_contexts(['test', 'ci']) + +load('ext://min_tilt_version', 'min_tilt_version') +min_tilt_version('0.15.0') # includes fix for auto_init+False with tilt ci + +include('./services/Tiltfile') + +k8s_yaml('deployment/kubernetes.yaml') + +if os.environ.get('PROD', '') == '': + docker_build( + 'wedding-image', + '.', + dockerfile='deployment/Dockerfile', + target='build-env', + build_args={"SOURCE_BRANCH":"development", "SOURCE_COMMIT":"development"}, + only=[ 'go.mod' + , 'go.sum' + , 'pkg' + , 'cmd' + , 'deployment' + ], + ignore=[ + '.git', + '*/*_test.go', + 'deployment/kubernetes.yaml', + ], + live_update=[ + sync('pkg', '/app/pkg'), + sync('cmd', '/app/cmd'), + sync('go.mod', '/app/go.mod'), + sync('go.sum', '/app/go.sum'), + run('go install ./cmd/wedding'), + ], + ) +else: + docker_build( + 'backend-image', + '.', + dockerfile='deployment/Dockerfile', + build_args={"SOURCE_BRANCH":"development", "SOURCE_COMMIT":"development"}, + only=[ 'go.mod' + , 'go.sum' + , 'pkg' + , 'cmd' + , 'deployment' + ], + ignore=[ + '.git', + '*/*_test.go', + 'deployment/kubernetes.yaml', + ], + ) + +k8s_resource( + 'wedding', + port_forwards=['12376:2376'], + resource_deps=['setup-s3-bucket'], +) + + + + +#k8s_yaml('e2e-tests/deployment/tests.yaml') +#docker_build( +# 'e2e-tests-image', +# 'e2e-tests', +# dockerfile='e2e-tests/deployment/Dockerfile', +#) +#k8s_resource( +# 'e2e-tests', +# trigger_mode=TRIGGER_MODE_MANUAL, +# resource_deps=['backend', 'frontend'], +#) diff --git a/cmd/wedding/main.go b/cmd/wedding/main.go new file mode 100644 index 00000000..eb1c6bbe --- /dev/null +++ b/cmd/wedding/main.go @@ -0,0 +1,219 @@ +package main + +import ( + "context" + "fmt" + "io/ioutil" + "log" + "net/http" + "os" + "os/signal" + "strings" + "syscall" + "time" + + "github.com/aws/aws-sdk-go/aws" + "github.com/aws/aws-sdk-go/aws/credentials" + "github.com/aws/aws-sdk-go/aws/session" + "github.com/aws/aws-sdk-go/service/s3" + wedding "github.com/damoon/wedding/pkg" + "github.com/urfave/cli/v2" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/rest" +) + +var ( + gitHash string + gitRef string +) + +func main() { + app := &cli.App{ + Name: "Wedding", + Usage: "Serve dockerd API by running kubernetes jobs.", + Action: run, + Commands: []*cli.Command{ + { + Name: "server", + Usage: "Start the server.", + Flags: []cli.Flag{ + &cli.StringFlag{Name: "addr", Value: ":2376", Usage: "Address to run service on."}, + &cli.StringFlag{Name: "s3-endpoint", Required: true, Usage: "s3 endpoint."}, + &cli.StringFlag{Name: "s3-access-key-file", Required: true, Usage: "Path to s3 access key."}, + &cli.StringFlag{Name: "s3-secret-key-file", Required: true, Usage: "Path to s3 secret access key."}, + &cli.BoolFlag{Name: "s3-ssl", Value: true, Usage: "s3 uses SSL."}, + &cli.StringFlag{Name: "s3-location", Value: "us-east-1", Usage: "s3 bucket location."}, + &cli.StringFlag{Name: "s3-bucket", Required: true, Usage: "s3 bucket name."}, + }, + Action: run, + }, + { + Name: "version", + Usage: "Show the version", + Action: func(c *cli.Context) error { + _, err := os.Stdout.WriteString(fmt.Sprintf("version: %s\ngit commit: %s", gitRef, gitHash)) + if err != nil { + return err + } + + return nil + }, + }, + }, + } + + err := app.Run(os.Args) + if err != nil { + log.Println(err) + os.Exit(1) + } +} + +func run(c *cli.Context) error { + log.Printf("version: %v", gitRef) + log.Printf("git commit: %v", gitHash) + + log.Println("set up storage") + + storage, err := setupObjectStore( + c.String("s3-endpoint"), + c.String("s3-access-key-file"), + c.String("s3-secret-key-file"), + c.Bool("s3-ssl"), + c.String("s3-location"), + c.String("s3-bucket")) + if err != nil { + return fmt.Errorf("setup minio s3 client: %v", err) + } + + log.Println("set up kubernetes client") + + kubernetesClient, namespace, err := setupKubernetesClient() + if err != nil { + return fmt.Errorf("setup kubernetes client: %v", err) + } + + log.Println("set up service") + + svc := wedding.NewService(storage, kubernetesClient, namespace) + + svcServer := httpServer(svc, c.String("addr")) + + log.Println("starting server") + + go mustListenAndServe(svcServer) + + log.Println("running") + + awaitShutdown() + + ctx, cancel := context.WithTimeout(context.Background(), time.Hour) + defer cancel() + // TODO configure pod to allow a grace period of one hour + + err = shutdown(ctx, svcServer) + if err != nil { + return fmt.Errorf("shutdown service server: %v", err) + } + + log.Println("shutdown complete") + + return nil +} + +func setupObjectStore( + endpoint, accessKeyPath, secretKeyPath string, + useSSL bool, + region, bucket string, +) (*wedding.ObjectStore, error) { + accessKeyBytes, err := ioutil.ReadFile(accessKeyPath) + if err != nil { + return nil, fmt.Errorf("reading secret access key from %s: %v", accessKeyPath, err) + } + + secretKeyBytes, err := ioutil.ReadFile(secretKeyPath) + if err != nil { + return nil, fmt.Errorf("reading secret access key from %s: %v", secretKeyPath, err) + } + + accessKey := strings.TrimSpace(string(accessKeyBytes)) + secretKey := strings.TrimSpace(string(secretKeyBytes)) + + endpointProtocol := "http" + if useSSL { + endpointProtocol = "https" + } + + s3Config := &aws.Config{ + Credentials: credentials.NewStaticCredentials(accessKey, secretKey, ""), + Endpoint: aws.String(fmt.Sprintf("%s://%s", endpointProtocol, endpoint)), + Region: aws.String(region), + DisableSSL: aws.Bool(!useSSL), + S3ForcePathStyle: aws.Bool(true), + } + + newSession, err := session.NewSession(s3Config) + if err != nil { + return nil, fmt.Errorf("set up aws session: %v", err) + } + + s3Client := s3.New(newSession) + + return &wedding.ObjectStore{ + Client: s3Client, + Bucket: bucket, + }, nil +} + +func setupKubernetesClient() (*kubernetes.Clientset, string, error) { + ns, err := ioutil.ReadFile("/run/secrets/kubernetes.io/serviceaccount/namespace") + if err != nil { + return nil, "", fmt.Errorf("read namespace: %v", err) + } + + config, err := rest.InClusterConfig() + if err != nil { + return nil, "", err + } + + clientset, err := kubernetes.NewForConfig(config) + if err != nil { + return nil, "", err + } + + return clientset, string(ns), nil +} + +func httpServer(h http.Handler, addr string) *http.Server { + httpServer := &http.Server{ + // TODO do not timeout builds + ReadTimeout: 30 * time.Minute, + WriteTimeout: 30 * time.Minute, + } + httpServer.Addr = addr + httpServer.Handler = h + + return httpServer +} + +func mustListenAndServe(srv *http.Server) { + err := srv.ListenAndServe() + if err != nil && err != http.ErrServerClosed { + log.Fatal(err) + } +} + +func awaitShutdown() { + stop := make(chan os.Signal, 2) + signal.Notify(stop, os.Interrupt, syscall.SIGTERM) + <-stop +} + +func shutdown(ctx context.Context, srv *http.Server) error { + err := srv.Shutdown(ctx) + if err != nil { + return err + } + + return nil +} diff --git a/deployment/Dockerfile b/deployment/Dockerfile new file mode 100644 index 00000000..edd06a11 --- /dev/null +++ b/deployment/Dockerfile @@ -0,0 +1,31 @@ +# build-env ################################################### +FROM golang:1.15.4 AS build-env +WORKDIR /app + +RUN apt-get update +RUN apt-get install -y entr + +COPY deployment/entrypoint.sh /entrypoint.sh +ENTRYPOINT ["/entrypoint.sh"] + +COPY go.mod . +COPY go.sum . +RUN go mod download + +ARG SOURCE_BRANCH +ARG SOURCE_COMMIT + +COPY cmd cmd +COPY pkg pkg +RUN go install -ldflags="-X main.gitRef=${SOURCE_BRANCH} -X main.gitHash=${SOURCE_COMMIT}" ./cmd/wedding + +############################################################### +FROM debian:buster + +RUN apt-get update && apt-get install -y \ + ca-certificates \ + && rm -rf /var/lib/apt/lists/* + +COPY --from=build-env /etc/mime.types /etc/mime.types +COPY --from=build-env /go/bin/wedding /usr/local/bin/wedding +ENTRYPOINT [ "wedding", "server" ] diff --git a/deployment/entrypoint.sh b/deployment/entrypoint.sh new file mode 100755 index 00000000..98220e8a --- /dev/null +++ b/deployment/entrypoint.sh @@ -0,0 +1,2 @@ +#!/bin/sh +find /go/bin/wedding | entr -d -r wedding server $@ diff --git a/deployment/kubernetes.yaml b/deployment/kubernetes.yaml new file mode 100644 index 00000000..a8a8de9a --- /dev/null +++ b/deployment/kubernetes.yaml @@ -0,0 +1,85 @@ +apiVersion: v1 +kind: Service +metadata: + name: wedding +spec: + selector: + app: wedding + ports: + - name: wedding + port: 2376 +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: wedding + labels: + app: wedding +spec: + selector: + matchLabels: + app: wedding + template: + metadata: + labels: + app: wedding + spec: + serviceAccountName: wedding + containers: + - name: wedding + image: wedding-image + args: + - --s3-endpoint=minio:9000 + - --s3-access-key-file=/secret/minio/MINIO_ACCESS_KEY + - --s3-secret-key-file=/secret/minio/MINIO_SECRET_KEY + - --s3-ssl=false + - --s3-bucket=wedding + ports: + - name: wedding + containerPort: 2376 + readinessProbe: + httpGet: + path: /_ping + port: 2376 + volumeMounts: + - name: minio + mountPath: "/secret/minio" + readOnly: true + volumes: + - name: minio + secret: + secretName: minio +--- +apiVersion: v1 +kind: ServiceAccount +metadata: + name: wedding +--- +apiVersion: rbac.authorization.k8s.io/v1 +kind: RoleBinding +metadata: + name: wedding +subjects: +- kind: ServiceAccount + name: wedding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: admin +# TODO create a custom set of permissions and avoid namespace admin role +#roleRef: +# kind: Role +# name: wedding +# apiGroup: rbac.authorization.k8s.io +--- +apiVersion: rbac.authorization.k8s.io/v1 +kind: Role +metadata: + name: wedding +rules: +- apiGroups: [""] + resources: ["pods"] + verbs: ["get", "watch", "list"] +- apiGroups: [""] + resources: ["jobs"] + verbs: ["get", "list", "watch", "create", "update", "patch", "delete"] diff --git a/go.mod b/go.mod new file mode 100644 index 00000000..75156fbb --- /dev/null +++ b/go.mod @@ -0,0 +1,11 @@ +module github.com/damoon/wedding + +go 1.15 + +require ( + github.com/aws/aws-sdk-go v1.35.23 + github.com/urfave/cli/v2 v2.3.0 + k8s.io/api v0.19.3 + k8s.io/apimachinery v0.19.3 + k8s.io/client-go v0.19.3 +) diff --git a/go.sum b/go.sum new file mode 100644 index 00000000..23e14f76 --- /dev/null +++ b/go.sum @@ -0,0 +1,339 @@ 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responses to stdout. diff --git a/hack/sniffer/main.go b/hack/sniffer/main.go new file mode 100644 index 00000000..3984cb8a --- /dev/null +++ b/hack/sniffer/main.go @@ -0,0 +1,94 @@ +package main + +import ( + "bytes" + "fmt" + "io" + "io/ioutil" + "log" + "net/http" + "net/http/httputil" + "net/url" + "os" + "strconv" +) + +func main() { + http.HandleFunc("/", sniffer) + + if err := http.ListenAndServe(":23765", nil); err != nil { + log.Fatalf("listen and serve: %v", err) + } +} + +func sniffer(res http.ResponseWriter, req *http.Request) { + err := serveReverseProxy("http://127.0.0.1:2376", res, req) + if err != nil { + res.WriteHeader(http.StatusInternalServerError) + return + } +} + +func serveReverseProxy(target string, res http.ResponseWriter, req *http.Request) error { + _, err := printRequest(os.Stdout, req) + if err != nil { + return err + } + + url, err := url.Parse(target) + if err != nil { + // TODO Avoid panicing during runtime, parse url during start up once. + return fmt.Errorf("parse url %s: %v", target, err) + } + + req.URL.Host = url.Host + req.URL.Scheme = url.Scheme + req.Host = url.Host + + req.Header.Set("X-Forwarded-Host", req.Header.Get("Host")) + + proxy := httputil.NewSingleHostReverseProxy(url) + + proxy.ModifyResponse = func(resp *http.Response) error { + return printRespose(os.Stdout, resp) + } + + proxy.ServeHTTP(res, req) + + return nil +} + +func printRequest(w io.Writer, req *http.Request) (*bytes.Reader, error) { + // TODO To avoid OOM, check body size and use disk to cache. + + body, err := ioutil.ReadAll(req.Body) + if err != nil { + return nil, fmt.Errorf("reading body: %v", err) + } + + w.Write([]byte(fmt.Sprintf("req: %v\n\n", req))) + + req.Body = ioutil.NopCloser(bytes.NewBuffer(body)) + reader := bytes.NewReader(body) + + return reader, nil +} + +func printRespose(w io.Writer, resp *http.Response) error { + b, err := ioutil.ReadAll(resp.Body) + if err != nil { + return err + } + err = resp.Body.Close() + if err != nil { + return err + } + + w.Write([]byte(fmt.Sprintf("%v\n%v\n", resp, string(b)))) + + body := ioutil.NopCloser(bytes.NewReader(b)) + resp.Body = body + resp.ContentLength = int64(len(b)) + resp.Header.Set("Content-Length", strconv.Itoa(len(b))) + return nil +} diff --git a/pkg/build-prune.go b/pkg/build-prune.go new file mode 100644 index 00000000..42cd3c84 --- /dev/null +++ b/pkg/build-prune.go @@ -0,0 +1,13 @@ +package wedding + +import ( + "net/http" +) + +func buildPrune(res http.ResponseWriter, req *http.Request) { + res.Write([]byte(`{ + "CachesDeleted": [], + "SpaceReclaimed": 0 +} +`)) +} diff --git a/pkg/build.go b/pkg/build.go new file mode 100644 index 00000000..9be804a7 --- /dev/null +++ b/pkg/build.go @@ -0,0 +1,494 @@ +package wedding + +import ( + "context" + "encoding/base64" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "log" + "net/http" + "os" + "strconv" + "time" + + "github.com/aws/aws-sdk-go/aws" + "github.com/aws/aws-sdk-go/service/s3" + + batchv1 "k8s.io/api/batch/v1" + apiv1 "k8s.io/api/core/v1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + v1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/labels" +) + +const ( + helpText = ` +wedding only supports these arguments: context, tag, buildargs, cachefrom, cpuperiod, cpuquota, dockerfile, memory, labels, and target +%s` +) + +type buildConfig struct { + buildArgs map[string]string + labels map[string]string + cacheRepo string + cpuMilliseconds int + dockerfile string + memoryBytes int + target string + tag string + noCache bool + registryAuth string + contextFilePath string +} + +// ObjectStore manages access to a S3 compatible file store. +type ObjectStore struct { + Client *s3.S3 + Bucket string +} + +func (s Service) buildHandler() http.HandlerFunc { + return func(res http.ResponseWriter, req *http.Request) { + + // res.Write([]byte(`{"aux":{"ID":"sha256:d8f38feb768dd84819b607224c07f2453412e1808b4b4e52894048073e50732d"}}`)) + + //return + + ctx := req.Context() + + cfg, err := buildParameters(req) + if err != nil { + printBuildHelpText(res, err) + return + } + + err = s.objectStore.storeContext(ctx, req, cfg) + if err != nil { + res.WriteHeader(http.StatusInternalServerError) + res.Write([]byte(fmt.Sprintf("store context: %v", err))) + log.Printf("execute build: %v", err) + return + } + defer func() { + s.objectStore.deleteContext(ctx, cfg) + }() + + err = s.executeBuild(ctx, cfg, res) + if err != nil { + res.WriteHeader(http.StatusInternalServerError) + res.Write([]byte(fmt.Sprintf("execute build: %v", err))) + log.Printf("execute build: %v", err) + return + } + } +} + +func buildParameters(req *http.Request) (*buildConfig, error) { + cfg := &buildConfig{} + + asserts := map[string]string{ + // "buildargs": "{}", + // "cachefrom": "[]", + "cgroupparent": "", + // "cpuperiod": "0", + // "cpuquota": "100000", + "cpusetcpus": "", + "cpusetmems": "", + "cpushares": "0", + // "dockerfile": "use-case-1%2FDockerfile", + // "labels": "{}", + // "memory": "1000", + "memswap": "0", + // "networkmode": "default", // needs two ignored values + // "rm": "1", // needs two ignored values + "shmsize": "0", + // "target": "", + "ulimits": "null", + // "version": "1", // needs two ignored values + } + + for k, v := range asserts { + if req.URL.Query().Get(k) != v { + return cfg, fmt.Errorf("unsupported argument %s set to '%s'", k, req.URL.Query().Get(k)) + } + } + + networkmode := req.URL.Query().Get("networkmode") + if networkmode != "default" && networkmode != "" { // docker uses "default", tilt uses "" + return cfg, fmt.Errorf("unsupported argument networkmode set to '%s'", networkmode) + } + + version := req.URL.Query().Get("version") + if version != "1" && version != "2" { // docker uses "1", tilt uses "2" + return cfg, fmt.Errorf("unsupported argument version set to '%s'", version) + } + + rm := req.URL.Query().Get("rm") + if rm != "1" && rm != "0" { // docker uses "1", tilt uses 02" + return cfg, fmt.Errorf("unsupported argument rm set to '%s'", rm) + } + + err := json.Unmarshal([]byte(req.URL.Query().Get("buildargs")), &cfg.buildArgs) + if err != nil { + return cfg, fmt.Errorf("decode buildargs: %v", err) + } + + err = json.Unmarshal([]byte(req.URL.Query().Get("labels")), &cfg.labels) + if err != nil { + return cfg, fmt.Errorf("decode labels: %v", err) + } + + // cache repo + cachefrom := []string{} + err = json.Unmarshal([]byte(req.URL.Query().Get("cachefrom")), &cachefrom) + if err != nil { + return cfg, fmt.Errorf("decode cachefrom: %v", err) + } + + if len(cachefrom) > 1 { + return cfg, fmt.Errorf("wedding only supports one cachefrom image") + } + if len(cachefrom) == 1 { + cfg.cacheRepo = cachefrom[0] + } + + // TODO set default cache from tag + + // cpu limit + cpuperiod, err := strconv.Atoi(req.URL.Query().Get("cpuperiod")) + if err != nil { + return cfg, fmt.Errorf("parse cpu period to int: %v", err) + } + if cpuperiod == 0 { + cpuperiod = 100_000 // results in 1 cpu + } + + cpuquota, err := strconv.Atoi(req.URL.Query().Get("cpuquota")) + if err != nil { + return cfg, fmt.Errorf("parse cpu quota to int: %v", err) + } + if cpuperiod == 0 { + cpuperiod = 100_000 // 100ms is the default of docker + } + + cfg.cpuMilliseconds = int(1000 * float64(cpuquota) / float64(cpuperiod)) + + // Dockerfile + cfg.dockerfile = req.URL.Query().Get("dockerfile") + if cfg.dockerfile == "" { + cfg.dockerfile = "Dockerfile" + } + + // memory limit + memoryArg := req.URL.Query().Get("memory") + if memoryArg == "" { + memoryArg = "2147483648" // 2Gi default + } + memory, err := strconv.Atoi(memoryArg) + if err != nil { + return cfg, fmt.Errorf("parse cpu quota to int: %v", err) + } + cfg.memoryBytes = memory + + // target + cfg.target = req.URL.Query().Get("target") + + // image tag + tags := req.URL.Query()["t"] + if len(tags) > 1 { + return cfg, fmt.Errorf("wedding does not support setting multiple image tags at a time") + } + // if len(tags) != 1 { + // return cfg, fmt.Errorf("image tag not set") + // } + if len(tags) == 1 { + cfg.tag = tags[0] + } + + // disable cache + nocache := req.URL.Query().Get("nocache") + cfg.noCache = nocache == "1" + + // registry authentitation + registryCfg, err := base64.StdEncoding.DecodeString(req.Header.Get("X-Registry-Config")) + if err != nil { + return cfg, fmt.Errorf("decode registry authentication config: %v", err) + } + cfg.registryAuth = string(registryCfg) + + return cfg, nil +} + +func printBuildHelpText(res http.ResponseWriter, err error) { + txt := fmt.Sprintf(helpText, err) + + res.WriteHeader(http.StatusBadRequest) + + _, err = res.Write([]byte(txt)) + if err != nil { + log.Printf("print help text: %v", err) + } +} + +func (o ObjectStore) storeContext(ctx context.Context, req *http.Request, cfg *buildConfig) error { + + // BUG: possible OOM: loading all context into memory + b, err := ioutil.ReadAll(req.Body) + if err != nil { + return fmt.Errorf("read context: %v", err) + } + + path := fmt.Sprintf("%d.tar", time.Now().UnixNano()) + + ioutil.WriteFile(path, b, os.ModePerm) + + file, err := os.Open(path) + defer file.Close() + + put := &s3.PutObjectInput{ + Bucket: aws.String(o.Bucket), + Key: aws.String(path), + ContentType: aws.String("application/x-tar"), + Body: file, + } + + _, err = o.Client.PutObjectWithContext(ctx, put) + if err != nil { + return fmt.Errorf("upload context to bucket: %v", err) + } + + cfg.contextFilePath = path + + return nil + +} + +func (o ObjectStore) presignContext(cfg *buildConfig) (string, error) { + + req, _ := o.Client.GetObjectRequest(&s3.GetObjectInput{ + Bucket: aws.String(o.Bucket), + Key: aws.String(cfg.contextFilePath), + }) + + url, err := req.Presign(time.Hour) + if err != nil { + return "", fmt.Errorf("presign GET %s: %v", cfg.contextFilePath, err) + } + + return url, nil +} + +func (o ObjectStore) deleteContext(ctx context.Context, cfg *buildConfig) error { + _, err := o.Client.DeleteObjectWithContext(ctx, &s3.DeleteObjectInput{ + Bucket: aws.String(o.Bucket), + Key: aws.String(cfg.contextFilePath), + }) + if err != nil { + return err + } + + return nil +} + +func (s Service) executeBuild(ctx context.Context, cfg *buildConfig, res http.ResponseWriter) error { + + presignedContextURL, err := s.objectStore.presignContext(cfg) + if err != nil { + return err + } + + buildScript := fmt.Sprintf(` +cd +pwd +wget -O - "%s" | tar -xf - +ls -la +export BUILDKITD_FLAGS="--oci-worker-no-process-sandbox" +export BUILDCTL_CONNECT_RETRIES_MAX=100 +buildctl-daemonless.sh \ + build \ + --frontend dockerfile.v0 \ + --local context=. \ + --local dockerfile=. \ + --opt filename=Dockerfile + `, presignedContextURL) + + job := &batchv1.Job{ + ObjectMeta: metav1.ObjectMeta{ + GenerateName: "wedding-build-", + }, + Spec: batchv1.JobSpec{ + Template: apiv1.PodTemplateSpec{ + ObjectMeta: metav1.ObjectMeta{}, + Spec: apiv1.PodSpec{ + Containers: []apiv1.Container{ + { + Name: "buildkit", + Image: "moby/buildkit:v0.7.2-rootless", + Command: []string{ + "sh", + "-c", + buildScript, + // "date; sleep 1; date; sleep 1; date; sleep 1; date;", + }, + }, + }, + RestartPolicy: apiv1.RestartPolicyOnFailure, + }, + }, + }, + } + + err = s.executeJob(ctx, job, res) + if err != nil { + return err + } + + return nil +} + +func (s Service) executeJob(ctx context.Context, job *batchv1.Job, res http.ResponseWriter) error { + jobsClient := s.kubernetesClient.BatchV1().Jobs(s.namespace) + + stream(res, "Creating new job.\n") + + newJob, err := jobsClient.Create(ctx, job, v1.CreateOptions{}) + if err != nil { + streamf(res, "Job creation failed: %v\n", err) + return fmt.Errorf("create job: %v", err) + } + + streamf(res, "Created job %v.\n", newJob.GetName()) + + defer func() { + streamf(res, "Deleting job %v.\n", newJob.GetName()) + + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + + propagationPolicy := v1.DeletePropagationBackground + err = jobsClient.Delete(ctx, newJob.GetName(), v1.DeleteOptions{ + PropagationPolicy: &propagationPolicy, + }) + if err != nil { + streamf(res, "Job deletetion failed: %v\n", err) + log.Printf("delete job: %v", err) + } + }() + +watchJob: + labelSelector := metav1.LabelSelector{MatchLabels: map[string]string{"job-name": newJob.GetName()}} + watchTimeout := int64(120) + jobWatch, err := s.kubernetesClient.BatchV1().Jobs(s.namespace). + Watch(ctx, v1.ListOptions{ + LabelSelector: labels.Set(labelSelector.MatchLabels).String(), + TimeoutSeconds: &watchTimeout, + }) + if err != nil { + return err + } + defer jobWatch.Stop() + + for { + select { + case <-ctx.Done(): + return fmt.Errorf("context timed out") + + case e := <-jobWatch.ResultChan(): + watchedJob, ok := e.Object.(*batchv1.Job) + if !ok { + stream(res, "Unexpected error.\n") + log.Panicf("unexpected type %v", e.Object) + } + + if watchedJob.Status.Succeeded == 1 { + stream(res, "Job finished.\n") + return nil + } + + if watchedJob.Status.Active == 1 { + stream(res, "Job started.\n") + goto showLogs + } + } + } + +showLogs: + podList, err := s.kubernetesClient.CoreV1().Pods(s.namespace).List(ctx, metav1.ListOptions{ + LabelSelector: labels.Set(labelSelector.MatchLabels).String(), + }) + + if len(podList.Items) != 1 { + stream(res, "Pod not found.\n") + goto watchJob + } + + pod := podList.Items[0] + + if pod.Status.Phase != "Running" { + time.Sleep(time.Second) + goto showLogs + } + + stream(res, "Pod started.\n") + + req := s.kubernetesClient.CoreV1().Pods(s.namespace).GetLogs(pod.Name, &apiv1.PodLogOptions{Follow: true}) + podLogs, err := req.Stream(ctx) + if err != nil { + streamf(res, "Log streaming failed: %v\n", err) + return fmt.Errorf("streaming logs: %v", err) + } + defer podLogs.Close() + + streamf(res, "Streaming logs from pod %s.\n", pod.Name) + + buf := make([]byte, 1024) + for { + n, err := podLogs.Read(buf) + if n != 0 { + stream(res, string(buf[:n])) + } + if err != nil { + if err == io.EOF { + stream(res, "End of logs reached.\n") + return nil + } + + return fmt.Errorf("read logs: %v", err) + } + } +} + +func (s Service) podStatus(ctx context.Context, podName string) (apiv1.PodPhase, error) { + pod, err := s.kubernetesClient.CoreV1().Pods(s.namespace).Get(ctx, podName, metav1.GetOptions{}) + if err != nil { + return "", err + } + + return pod.Status.Phase, nil +} + +func stream(res http.ResponseWriter, message string) error { + b, err := json.Marshal(message) + if err != nil { + panic(err) // encode a string to json should not fail + } + + _, err = res.Write([]byte(fmt.Sprintf(`{"stream": %s}`, b))) + if err != nil { + return err + } + + if f, ok := res.(http.Flusher); ok { + f.Flush() + } else { + return fmt.Errorf("stream can not be flushed") + } + + return nil +} + +func streamf(res http.ResponseWriter, message string, args ...interface{}) error { + return stream(res, fmt.Sprintf(message, args...)) +} diff --git a/pkg/containers-prune.go b/pkg/containers-prune.go new file mode 100644 index 00000000..f13b0dbd --- /dev/null +++ b/pkg/containers-prune.go @@ -0,0 +1,13 @@ +package wedding + +import ( + "net/http" +) + +func containersPrune(res http.ResponseWriter, req *http.Request) { + res.Write([]byte(`{ + "ContainersDeleted": [], + "SpaceReclaimed": 0 +} +`)) +} diff --git a/pkg/images-json.go b/pkg/images-json.go new file mode 100644 index 00000000..cb28042a --- /dev/null +++ b/pkg/images-json.go @@ -0,0 +1,9 @@ +package wedding + +import ( + "net/http" +) + +func imagesJSON(res http.ResponseWriter, req *http.Request) { + res.Write([]byte(`[]`)) +} diff --git a/pkg/ping.go b/pkg/ping.go new file mode 100644 index 00000000..94335658 --- /dev/null +++ b/pkg/ping.go @@ -0,0 +1,11 @@ +package wedding + +import ( + "net/http" +) + +func ping(res http.ResponseWriter, req *http.Request) { + res.Header().Set("Api-Version", apiVersion) + res.Header().Set("Docker-Experimental", "false") + res.WriteHeader(http.StatusOK) +} diff --git a/pkg/unsupported.go b/pkg/unsupported.go new file mode 100644 index 00000000..a52b3517 --- /dev/null +++ b/pkg/unsupported.go @@ -0,0 +1,9 @@ +package wedding + +import ( + "net/http" +) + +func unsupported(res http.ResponseWriter, req *http.Request) { + res.WriteHeader(http.StatusNotImplemented) +} diff --git a/pkg/version.go b/pkg/version.go new file mode 100644 index 00000000..520e5cd3 --- /dev/null +++ b/pkg/version.go @@ -0,0 +1,26 @@ +package wedding + +import ( + "fmt" + "net/http" +) + +func version(res http.ResponseWriter, req *http.Request) { + res.Write([]byte(fmt.Sprintf(`{ + "Components": [ + { + "Name": "Engine", + "Version": "19.03.8", + "Details": { + "ApiVersion": "%s", + "Experimental": "false", + "MinAPIVersion": "1.12" + } + } + ], + "Version": "19.03.8", + "ApiVersion": "%s", + "MinAPIVersion": "1.12" +} +`, apiVersion, apiVersion))) +} diff --git a/pkg/wedding.go b/pkg/wedding.go new file mode 100644 index 00000000..85347d20 --- /dev/null +++ b/pkg/wedding.go @@ -0,0 +1,57 @@ +package wedding + +import ( + "log" + "net/http" + "strings" + + "k8s.io/client-go/kubernetes" +) + +const apiVersion = "1.40" + +// Service runs the wedding server. +type Service struct { + router *http.ServeMux + objectStore *ObjectStore + namespace string + kubernetesClient *kubernetes.Clientset +} + +// NewService creates a new service server and initiates the routes. +func NewService(objectStore *ObjectStore, kubernetesClient *kubernetes.Clientset, namespace string) *Service { + srv := &Service{ + objectStore: objectStore, + namespace: namespace, + kubernetesClient: kubernetesClient, + } + + srv.routes() + + return srv +} + +func (s *Service) ServeHTTP(w http.ResponseWriter, r *http.Request) { + s.router.ServeHTTP(w, r) +} + +func (s *Service) routes() { + s.router = http.NewServeMux() + s.router.HandleFunc("/v"+apiVersion+"/images/json", imagesJSON) + s.router.HandleFunc("/v"+apiVersion+"/containers/prune", containersPrune) + s.router.HandleFunc("/v"+apiVersion+"/build/prune", buildPrune) + s.router.HandleFunc("/v"+apiVersion+"/version", version) + s.router.HandleFunc("/v"+apiVersion+"/build", logReqResp(s.buildHandler())) + s.router.HandleFunc("/_ping", ping) + s.router.HandleFunc("/", logReqResp(unsupported)) +} + +func logReqResp(fn http.HandlerFunc) http.HandlerFunc { + return func(res http.ResponseWriter, req *http.Request) { + if !strings.HasPrefix(req.Header.Get("User-Agent"), "kube-probe/") { + log.Printf("req: %v\n", req) + } + + fn(res, req) + } +} diff --git a/services/Tiltfile b/services/Tiltfile new file mode 100644 index 00000000..84d224c6 --- /dev/null +++ b/services/Tiltfile @@ -0,0 +1,12 @@ +k8s_yaml('minio.yaml') +k8s_resource('minio', port_forwards=9000) + +k8s_yaml('minio-setup.yaml') +k8s_resource( + 'setup-s3-bucket', + resource_deps=['minio'], +) +k8s_resource( + 'delete-old-files', + resource_deps=['setup-s3-bucket'], +) diff --git a/services/minio-setup.yaml b/services/minio-setup.yaml new file mode 100644 index 00000000..4b38d1df --- /dev/null +++ b/services/minio-setup.yaml @@ -0,0 +1,73 @@ +apiVersion: batch/v1 +kind: Job +metadata: + name: setup-s3-bucket +spec: + backoffLimit: 20 + template: + metadata: + name: setup-s3-bucket + spec: + containers: + - name: mc + image: minio/mc:RELEASE.2020-05-16T01-44-37Z + command: + - sh + - -c + - | + set -euxo pipefail + mc config host add minio http://minio:9000 $(cat /secret/minio/MINIO_ACCESS_KEY) $(cat /secret/minio/MINIO_SECRET_KEY) + mc mb minio/wedding --ignore-existing + resources: + limits: + cpu: 20m + memory: 100Mi + requests: + cpu: 20m + memory: 100Mi + volumeMounts: + - name: minio + mountPath: "/secret/minio" + readOnly: true + volumes: + - name: minio + secret: + secretName: minio + restartPolicy: OnFailure +--- +apiVersion: batch/v1 +kind: Job +metadata: + name: delete-old-files +spec: + backoffLimit: 20 + template: + metadata: + name: delete-old-files + spec: + containers: + - name: mc + image: minio/mc:RELEASE.2020-05-16T01-44-37Z + command: + - sh + - -c + - | + set -euxo pipefail + mc config host add minio http://minio:9000 $(cat /secret/minio/MINIO_ACCESS_KEY) $(cat /secret/minio/MINIO_SECRET_KEY) + mc rm -r --older-than 2h --force minio/wedding + resources: + limits: + cpu: 20m + memory: 100Mi + requests: + cpu: 20m + memory: 100Mi + volumeMounts: + - name: minio + mountPath: "/secret/minio" + readOnly: true + volumes: + - name: minio + secret: + secretName: minio + restartPolicy: OnFailure \ No newline at end of file diff --git a/services/minio.yaml b/services/minio.yaml new file mode 100644 index 00000000..ddbaa9b1 --- /dev/null +++ b/services/minio.yaml @@ -0,0 +1,100 @@ +apiVersion: v1 +kind: Service +metadata: + name: minio +spec: + ports: + - name: minio + port: 9000 + selector: + app: minio +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: minio +spec: + selector: + matchLabels: + app: minio + strategy: + type: Recreate + replicas: 1 + template: + metadata: + labels: + app: minio + spec: + containers: + - name: minio + image: minio/minio:RELEASE.2020-05-16T01-33-21Z + args: + - server + - /home/shared + envFrom: + - secretRef: + name: minio + ports: + - name: http + containerPort: 9000 + resources: + limits: + cpu: "100m" + memory: "500Mi" + requests: + cpu: "100m" + memory: "500Mi" + readinessProbe: + httpGet: + path: /minio/health/live + port: 9000 + lifecycle: + preStop: + exec: + command: + - sh + - -c + - "sleep 10" + volumeMounts: + - name: data + mountPath: /home/shared + - name: queue + mountPath: /queue + volumes: + - name: data + persistentVolumeClaim: + claimName: minio + - name: queue + persistentVolumeClaim: + claimName: minio-notification-queue +--- +apiVersion: v1 +kind: Secret +metadata: + name: minio +type: Opaque +data: + MINIO_ACCESS_KEY: bWluaW8xMjM= # minio123 + MINIO_SECRET_KEY: bWluaW80NTY= # minio456 +--- +apiVersion: v1 +kind: PersistentVolumeClaim +metadata: + name: minio +spec: + accessModes: + - ReadWriteOnce + resources: + requests: + storage: 3Gi +--- +apiVersion: v1 +kind: PersistentVolumeClaim +metadata: + name: minio-notification-queue +spec: + accessModes: + - ReadWriteOnce + resources: + requests: + storage: 1Gi \ No newline at end of file diff --git a/use-case-1/Dockerfile b/use-case-1/Dockerfile new file mode 100644 index 00000000..13768300 --- /dev/null +++ b/use-case-1/Dockerfile @@ -0,0 +1,3 @@ +FROM alpine + +RUN sleep 1 diff --git a/use-case-3/Dockerfile b/use-case-3/Dockerfile new file mode 100644 index 00000000..8bd0a7f1 --- /dev/null +++ b/use-case-3/Dockerfile @@ -0,0 +1 @@ +FROM nginx diff --git a/use-case-3/Makefile b/use-case-3/Makefile new file mode 100644 index 00000000..813b14c3 --- /dev/null +++ b/use-case-3/Makefile @@ -0,0 +1,2 @@ +start: + DOCKER_HOST=tcp://127.0.0.1:12376 tilt up --port 10351 diff --git a/use-case-3/Tiltfile b/use-case-3/Tiltfile new file mode 100644 index 00000000..3e127dab --- /dev/null +++ b/use-case-3/Tiltfile @@ -0,0 +1,14 @@ +disable_snapshots() +allow_k8s_contexts(['test', 'ci']) + +load('ext://min_tilt_version', 'min_tilt_version') +min_tilt_version('0.15.0') # includes fix for auto_init+False with tilt ci + +k8s_yaml('kubernetes.yaml') + +docker_build('use-case-3-image', '.') + +k8s_resource( + 'use-case-3', + port_forwards=['8080:80'], +) diff --git a/use-case-3/kubernetes.yaml b/use-case-3/kubernetes.yaml new file mode 100644 index 00000000..108065fe --- /dev/null +++ b/use-case-3/kubernetes.yaml @@ -0,0 +1,36 @@ +apiVersion: v1 +kind: Service +metadata: + name: use-case-3 +spec: + selector: + app: use-case-3 + ports: + - name: nginx + port: 80 +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: use-case-3 + labels: + app: use-case-3 +spec: + selector: + matchLabels: + app: use-case-3 + template: + metadata: + labels: + app: use-case-3 + spec: + containers: + - name: nginx + image: use-case-3-image + ports: + - name: nginx + containerPort: 80 + readinessProbe: + httpGet: + path: / + port: 80