From abb8a504316569b9eec0a55cf0525a1402955467 Mon Sep 17 00:00:00 2001 From: Alex Suraci Date: Thu, 20 Sep 2018 22:03:05 -0400 Subject: [PATCH] init --- Dockerfile | 12 +++ LICENSE.md | 201 ++++++++++++++++++++++++++++++++++++++++++++++ NOTICE.md | 12 +++ README.md | 4 + cmd/check/main.go | 39 +++++++++ cmd/in/main.go | 139 ++++++++++++++++++++++++++++++++ cmd/out/main.go | 17 ++++ go.mod | 7 ++ go.sum | 6 ++ types.go | 14 ++++ 10 files changed, 451 insertions(+) create mode 100644 Dockerfile create mode 100644 LICENSE.md create mode 100644 NOTICE.md create mode 100644 README.md create mode 100644 cmd/check/main.go create mode 100644 cmd/in/main.go create mode 100644 cmd/out/main.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 types.go diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..636d935 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,12 @@ +FROM golang:1 as builder +COPY . /src +WORKDIR /src +ENV CGO_ENABLED 0 +RUN go mod download +RUN go build -o /assets/in ./cmd/in +RUN go build -o /assets/out ./cmd/out +RUN go build -o /assets/check ./cmd/check + +FROM alpine:edge +COPY --from=builder assets/ /opt/resource/ +RUN chmod +x /opt/resource/* diff --git a/LICENSE.md b/LICENSE.md new file mode 100644 index 0000000..5c304d1 --- /dev/null +++ b/LICENSE.md @@ -0,0 +1,201 @@ +Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright {yyyy} {name of copyright owner} + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/NOTICE.md b/NOTICE.md new file mode 100644 index 0000000..f8b07ca --- /dev/null +++ b/NOTICE.md @@ -0,0 +1,12 @@ +Copyright 2018 Alex Suraci, Chris Brown, and Pivotal Software, Inc. + +Licensed under the Apache License, Version 2.0 (the "License"); you may not use +this file except in compliance with the License. You may obtain a copy of the +License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software distributed +under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR +CONDITIONS OF ANY KIND, either express or implied. See the License for the +specific language governing permissions and limitations under the License. diff --git a/README.md b/README.md new file mode 100644 index 0000000..8cb1dbb --- /dev/null +++ b/README.md @@ -0,0 +1,4 @@ +# Mirror Resource + +Used for testing resource (and resource type) actions without depending on the +outside world. diff --git a/cmd/check/main.go b/cmd/check/main.go new file mode 100644 index 0000000..9c89c97 --- /dev/null +++ b/cmd/check/main.go @@ -0,0 +1,39 @@ +package main + +import ( + "encoding/json" + "os" + + resource "github.com/concourse/mirror-resource" + "github.com/sirupsen/logrus" +) + +type CheckRequest struct { + Source resource.Source `json:"source"` + Version *resource.Version `json:"version"` +} + +type CheckResponse []resource.Version + +func main() { + logrus.SetOutput(os.Stderr) + logrus.SetFormatter(&logrus.TextFormatter{ + ForceColors: true, + }) + + var req CheckRequest + err := json.NewDecoder(os.Stdin).Decode(&req) + if err != nil { + logrus.Errorf("invalid payload: %s", err) + os.Exit(1) + return + } + + response := CheckResponse{} + + if req.Version != nil { + response = append(response, *req.Version) + } + + json.NewEncoder(os.Stdout).Encode(response) +} diff --git a/cmd/in/main.go b/cmd/in/main.go new file mode 100644 index 0000000..7f9df5a --- /dev/null +++ b/cmd/in/main.go @@ -0,0 +1,139 @@ +package main + +import ( + "encoding/json" + "io/ioutil" + "os" + "os/exec" + "path/filepath" + + resource "github.com/concourse/mirror-resource" + "github.com/sirupsen/logrus" +) + +type InRequest struct { + Source resource.Source `json:"source"` + Version resource.Version `json:"version"` +} + +type InResponse struct { + Version resource.Version `json:"version"` + Metadata []resource.MetadataField `json:"metadata"` +} + +type ImageMetadata struct { + Env []string `json:"env"` + User string `json:"user"` +} + +func main() { + logrus.SetOutput(os.Stderr) + logrus.SetFormatter(&logrus.TextFormatter{ + ForceColors: true, + }) + + var req InRequest + err := json.NewDecoder(os.Stdin).Decode(&req) + if err != nil { + logrus.Errorf("invalid payload: %s", err) + os.Exit(1) + return + } + + if len(os.Args) < 2 { + logrus.Errorf("destination path not specified") + os.Exit(1) + return + } + + dest := os.Args[1] + + versionFile := filepath.Join(dest, "version") + err = ioutil.WriteFile(versionFile, []byte(req.Version.Version+"\n"), os.ModePerm) + if err != nil { + logrus.Errorf("failed to write version file: %s", err) + os.Exit(1) + return + } + + if req.Source.FetchImage { + replicateTo(filepath.Join(dest, "rootfs")) + + encTo(filepath.Join(dest, "metadata.json"), ImageMetadata{ + Env: []string{"VERSION=" + req.Version.Version}, + User: "root", + }) + } + + json.NewEncoder(os.Stdout).Encode(InResponse{ + Version: req.Version, + Metadata: []resource.MetadataField{}, + }) +} + +func replicateTo(rootfs string) { + err := os.MkdirAll(rootfs, os.ModePerm) + if err != nil { + logrus.Errorf("failed to create rootfs dir: %s", err) + os.Exit(1) + return + } + + dirs, err := ioutil.ReadDir("/") + if err != nil { + logrus.Errorf("failed to read /: %s", err) + os.Exit(1) + return + } + + for _, d := range dirs { + rootfsDst := filepath.Join(rootfs, d.Name()) + + switch d.Name() { + case "tmp", "dev", "proc", "sys": + // prevent recursing and copying wacky stuff + err := os.MkdirAll(rootfsDst, d.Mode()) + if err != nil { + logrus.Errorf("failed to create %s: %s", rootfsDst, err) + os.Exit(1) + return + } + + continue + } + + src := filepath.Join("/", d.Name()) + cp := exec.Command("cp", "-a", src, rootfsDst) + cp.Stdout = os.Stderr + cp.Stderr = os.Stderr + err := cp.Run() + if err != nil { + logrus.Errorf("failed to copy from %s to %s: %s", src, rootfsDst, err) + os.Exit(1) + return + } + } +} + +func encTo(path string, js interface{}) { + meta, err := os.Create(path) + if err != nil { + logrus.Errorf("failed to create %s: %s", path, err) + os.Exit(1) + return + } + + err = json.NewEncoder(meta).Encode(js) + if err != nil { + logrus.Errorf("failed to write %s: %s", path, err) + os.Exit(1) + return + } + + err = meta.Close() + if err != nil { + logrus.Errorf("failed to close %s: %s", path, err) + os.Exit(1) + return + } +} diff --git a/cmd/out/main.go b/cmd/out/main.go new file mode 100644 index 0000000..75ea72b --- /dev/null +++ b/cmd/out/main.go @@ -0,0 +1,17 @@ +package main + +import ( + "os" + + "github.com/sirupsen/logrus" +) + +func main() { + logrus.SetOutput(os.Stderr) + logrus.SetFormatter(&logrus.TextFormatter{ + ForceColors: true, + }) + + logrus.Error("not implemented") + os.Exit(1) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..789c411 --- /dev/null +++ b/go.mod @@ -0,0 +1,7 @@ +module github.com/concourse/mirror-resource + +require ( + github.com/sirupsen/logrus v1.0.6 + golang.org/x/crypto v0.0.0-20180910181607-0e37d006457b // indirect + golang.org/x/sys v0.0.0-20180920110915-d641721ec2de // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..64fab63 --- /dev/null +++ b/go.sum @@ -0,0 +1,6 @@ +github.com/sirupsen/logrus v1.0.6 h1:hcP1GmhGigz/O7h1WVUM5KklBp1JoNS9FggWKdj/j3s= +github.com/sirupsen/logrus v1.0.6/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc= +golang.org/x/crypto v0.0.0-20180910181607-0e37d006457b h1:2b9XGzhjiYsYPnKXoEfL7klWZQIt8IfyRCz62gCqqlQ= +golang.org/x/crypto v0.0.0-20180910181607-0e37d006457b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= +golang.org/x/sys v0.0.0-20180920110915-d641721ec2de h1:soC2mvPVpAV+Ld2qtpNn1eq25WTn76uIGNV23bofu6Q= +golang.org/x/sys v0.0.0-20180920110915-d641721ec2de/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= diff --git a/types.go b/types.go new file mode 100644 index 0000000..48f1a15 --- /dev/null +++ b/types.go @@ -0,0 +1,14 @@ +package resource + +type Source struct { + FetchImage bool `json:"fetch_image"` +} + +type Version struct { + Version string `json:"version"` +} + +type MetadataField struct { + Name string `json:"name"` + Value string `json:"value"` +}