From 714e1b71dd9f4bf227666109f01f417ec6b94da2 Mon Sep 17 00:00:00 2001 From: Sinny Kumari Date: Tue, 18 Jun 2019 19:14:00 +0530 Subject: [PATCH] Initial implementation of stream metadata generator --- LICENSE | 201 +++++++++++++++++++++++++++++++ README.md | 27 +++++ common.go | 20 ++++ go.mod | 3 + main.go | 305 +++++++++++++++++++++++++++++++++++++++++++++++ release.go | 67 +++++++++++ release_index.go | 57 +++++++++ stream.go | 65 ++++++++++ 8 files changed, 745 insertions(+) create mode 100644 LICENSE create mode 100644 common.go create mode 100644 go.mod create mode 100644 main.go create mode 100644 release.go create mode 100644 release_index.go create mode 100644 stream.go diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..261eeb9 --- /dev/null +++ b/LICENSE @@ -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/README.md b/README.md index e69de29..2298138 100644 --- a/README.md +++ b/README.md @@ -0,0 +1,27 @@ +# fedora-coreos-stream-generator +Generates stream metadata for Fedora CoreOS using release metadata and overrides + +# Running +Make sure you have latest go installed and then download the pacakge +``` +$ go get -u github.com/sinnykumari/fedora-coreos-stream-generator +``` +Add the binary in your PATH variable. If you haven't done anything fancy, adding standard binary path where Go keeps binaries from package will be enough +``` +$ export PATH=$PATH:~/go/bin/ +$ fedora-coreos-stream-generator -release-index= +``` +Partial stream override can be given using option -override= . override.json need to be available locally to the system. https://github.com/coreos/fedora-coreos-streams repo will contains override for FCOS streams + +**Note:** We don't yet generate release index (releases.json) for FCOS stream. https://sinnykumari.fedorapeople.org/fcos/release_index.json See https://github.com/coreos/fedora-coreos-tracker/issues/98 for sample example + +# Development +Fork and clone the repo locally and run it +``` +$ go build . +$ ./fedora-coreos-stream-generator -releases-index= + +``` + +Make changes and send PR + diff --git a/common.go b/common.go new file mode 100644 index 0000000..6af7481 --- /dev/null +++ b/common.go @@ -0,0 +1,20 @@ +package main + +// Metadata for stream +type Metadata struct { + LastModified string `json:"last-modified"` +} + +// ImageFormat contains Disk image details +type ImageFormat struct { + Disk *ImageType `json:"disk,omitempty"` + Kernel *ImageType `json:"kernel,omitempty"` + Initramfs *ImageType `json:"initramfs,omitempty"` +} + +// ImageType contains image detail +type ImageType struct { + Location string `json:"location"` + Signature string `json:"signature"` + Sha256 string `json:"sha256"` +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..6d40eef --- /dev/null +++ b/go.mod @@ -0,0 +1,3 @@ +module github.com/sinnykumari/fedora-coreos-stream-generator + +go 1.12 diff --git a/main.go b/main.go new file mode 100644 index 0000000..0428b23 --- /dev/null +++ b/main.go @@ -0,0 +1,305 @@ +package main + +import ( + "encoding/json" + "errors" + "flag" + "fmt" + "io" + "net/http" + "net/url" + "os" + "time" +) + +var errReleaseIndexMissing = errors.New("Please specify release index url") + +func releaseToStream(releaseArch *ReleaseArch, release Release) StreamArch { + artifacts := StreamArtifacts{} + cloudImages := StreamImages{} + if releaseArch.Media.Aws != nil { + aws := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Aws.Artifacts, + } + artifacts.Aws = &aws + awsAmis := StreamAwsImage{ + Regions: make(map[string]*StreamAwsAMI), + } + + if releaseArch.Media.Aws != nil && releaseArch.Media.Aws.Images != nil { + for region, ami := range *releaseArch.Media.Aws.Images { + streamAwsAMI := StreamAwsAMI{} + streamAwsAMI.Release = release.Release + streamAwsAMI.Image = *ami.Image + awsAmis.Regions[region] = &streamAwsAMI + + } + + cloudImages.Aws = &awsAmis + } + } + + if releaseArch.Media.Azure != nil { + azure := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Azure.Artifacts, + } + artifacts.Azure = &azure + + if az := releaseArch.Media.Azure.Images; az != nil && az.Global != nil && az.Global.Image != nil { + azureImage := StreamCloudImage{} + azureImage.Image = "Fedora:CoreOS:stable:latest" + cloudImages.Azure = &azureImage + } + + } + + if releaseArch.Media.Gcp != nil { + gcp := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Gcp.Artifacts, + } + artifacts.Gcp = &gcp + + if releaseArch.Media.Gcp != nil && releaseArch.Media.Gcp.Image != nil { + gcpImage := StreamCloudImage{} + gcpImage.Image = "projects/fedora-cloud/global/images/family/fedora-coreos-stable" + cloudImages.Gcp = &gcpImage + + } + } + + if releaseArch.Media.Digitalocean != nil { + digitalOcean := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Digitalocean.Artifacts, + } + artifacts.Digitalocean = &digitalOcean + + artifacts.Digitalocean = &digitalOcean + digitalOceanImage := StreamCloudImage{Image: "fedora-coreos-stable"} + cloudImages.Digitalocean = &digitalOceanImage + } + + if releaseArch.Media.Packet != nil { + packet := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Packet.Artifacts, + } + artifacts.Packet = &packet + + packetImage := StreamCloudImage{Image: "fedora_coreos_stable"} + cloudImages.Packet = &packetImage + } + + if releaseArch.Media.Openstack != nil { + openstack := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Openstack.Artifacts, + } + artifacts.Openstack = &openstack + } + + if releaseArch.Media.Qemu != nil { + qemu := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Qemu.Artifacts, + } + artifacts.Qemu = &qemu + } + + if releaseArch.Media.Virtualbox != nil { + virtualbox := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Virtualbox.Artifacts, + } + artifacts.Virtualbox = &virtualbox + } + + if releaseArch.Media.Vmware != nil { + vmware := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Vmware.Artifacts, + } + artifacts.Vmware = &vmware + } + + if releaseArch.Media.Metal != nil { + metal := StreamMediaDetails{ + Release: release.Release, + Formats: releaseArch.Media.Metal.Artifacts, + } + artifacts.Metal = &metal + } + + streamArch := StreamArch{ + Artifacts: artifacts, + } + + if cloudImages != (StreamImages{}) { + streamArch.Images = &cloudImages + } + + return streamArch +} + +func overrideData(original, override interface{}) interface{} { + switch override1 := override.(type) { + case map[string]interface{}: + original1, ok := original.(map[string]interface{}) + if !ok { + return override1 + } + for key, value1 := range original1 { + if value2, ok := override1[key]; ok { + override1[key] = overrideData(value1, value2) + } else { + override1[key] = value1 + } + } + case nil: + original1, ok := original.(map[string]interface{}) + if ok { + return original1 + } + } + return override +} + +func run() error { + var releasesURL string + + flag.StringVar(&releasesURL, "releases", "", "Release index location for the required stream") + var overrideFilename string + flag.StringVar(&overrideFilename, "override", "", "Override file location for the required stream") + var outputFile string + flag.StringVar(&outputFile, "output-file", "", "Save output into a file") + var prettyPrint bool + flag.BoolVar(&prettyPrint, "pretty-print", false, "Pretty-print output") + + flag.Parse() + + if releasesURL == "" { + return errReleaseIndexMissing + } + + releasePath, err := ReleaseURL(releasesURL) + if err != nil { + return fmt.Errorf("Error with Release Index: %v", err) + } + + parsedURL, err := url.Parse(releasePath) + if err != nil { + return fmt.Errorf("Error while parsing release path: %v", err) + } + + var decoder *json.Decoder + if parsedURL.Scheme == "" { + // It is most likely a local file. + releasesMetadataFile, err := os.Open(releasePath) + if err != nil { + return fmt.Errorf("Error opening file: %v", err) + } + + defer releasesMetadataFile.Close() + decoder = json.NewDecoder(releasesMetadataFile) + } else { + resp, err := http.Get(releasePath) + if err != nil { + return fmt.Errorf("Error while fetching: %v", err) + } + + defer resp.Body.Close() + decoder = json.NewDecoder(resp.Body) + } + + var release Release + if err = decoder.Decode(&release); err != nil { + return fmt.Errorf("Error while decoding json: %v", err) + } + + streamArch := make(map[string]*StreamArch) + for arch, releaseArch := range release.Architectures { + archContent := releaseToStream(releaseArch, release) + streamArch[arch] = &archContent + } + + streamMetadata := StreamMetadata{ + Stream: release.Stream, + Metadata: Metadata{LastModified: time.Now().UTC().Format(time.RFC3339)}, + Architectures: streamArch, + Updates: StreamUpdates{Release: release.Release}, + } + + if overrideFilename != "" { + overrideFile, err := os.Open(overrideFilename) + if err != nil { + return fmt.Errorf("Can't open file %s: %v", overrideFilename, err) + } + defer overrideFile.Close() + + streamMetadataJSON, err := json.Marshal(&streamMetadata) + if err != nil { + return fmt.Errorf("Error during Marshal: %v", err) + } + streamMetadataMap := make(map[string]interface{}) + if err = json.Unmarshal(streamMetadataJSON, &streamMetadataMap); err != nil { + return fmt.Errorf("Error during Unmarshal: %v", err) + } + + overrideMap := make(map[string]interface{}) + overrideDecoder := json.NewDecoder(overrideFile) + if err = overrideDecoder.Decode(&overrideMap); err != nil { + return fmt.Errorf("Error while decoding: %v", err) + } + + streamMetadataInterface := overrideData(streamMetadataMap, overrideMap) + streamMetadataMap = streamMetadataInterface.(map[string]interface{}) + + // We are doing Marshal and Unmarshal of streamMetadataMap to keep json in ordered way + streamMetadataJSON, err = json.Marshal(streamMetadataMap) + if err != nil { + return fmt.Errorf("Error during Marshal: %v", err) + } + if err = json.Unmarshal(streamMetadataJSON, &streamMetadata); err != nil { + return fmt.Errorf("Error during Unmarshal: %v", err) + } + } + + var out io.Writer + // If outputFile option not specified print on stdout + if outputFile != "" { + streamFile, err := os.Create(outputFile) + if err != nil { + return fmt.Errorf("Can't open file: %v", err) + } + + defer streamFile.Close() + out = streamFile + } else { + out = os.Stdout + } + + encoder := json.NewEncoder(out) + if prettyPrint { + encoder.SetIndent("", " ") + } + if err := encoder.Encode(&streamMetadata); err != nil { + return fmt.Errorf("Error while encoding: %v", err) + } + + return nil +} + +func main() { + if err := run(); err != nil { + fmt.Println(err) + + if err == errReleaseIndexMissing { + flag.Usage() + } + + os.Exit(1) + } +} diff --git a/release.go b/release.go new file mode 100644 index 0000000..56d3ffe --- /dev/null +++ b/release.go @@ -0,0 +1,67 @@ +package main + +// Release contains details from release.json +type Release struct { + Release string `json:"release"` + Stream string `json:"stream"` + Metadata Metadata `json:"metadata"` + Architectures map[string]*ReleaseArch `json:"architectures"` +} + +// ReleaseArch release details for x86_64 architetcure +type ReleaseArch struct { + Media *ReleaseMedia `json:"media"` +} + +// ReleaseMedia contains details about various images we ship +type ReleaseMedia struct { + Aws *ReleaseAws `json:"aws"` + Azure *ReleaseAzure `json:"azure"` + Digitalocean *ReleaseDigitalOcean `json:"digitalocean"` + Gcp *ReleaseGcp `json:"gcp"` + Metal *ReleaseTargetPlatform `json:"metal"` + Openstack *ReleaseTargetPlatform `json:"openstack"` + Packet *ReleaseTargetPlatform `json:"packet"` + Qemu *ReleaseTargetPlatform `json:"qemu"` + Virtualbox *ReleaseTargetPlatform `json:"virtualbox"` + Vmware *ReleaseTargetPlatform `json:"vmware"` +} + +// ReleaseAws contains AWS image information +type ReleaseAws struct { + Artifacts map[string]*ImageFormat `json:"artifacts"` + Images *map[string]*ReleaseCloudImage `json:"images"` +} + +// ReleaseDigitalOcean DigitalOcean image detail +type ReleaseDigitalOcean struct { + Artifacts map[string]*ImageFormat `json:"artifacts"` + Image string `json:"image"` +} + +// ReleaseAzure Azure image detail +type ReleaseAzure struct { + Artifacts map[string]*ImageFormat `json:"artifacts"` + Images *ReleaseAzureImages `json:"images"` +} + +// ReleaseAzureImages Azure image detail +type ReleaseAzureImages struct { + Global *ReleaseCloudImage `json:"global"` +} + +// ReleaseGcp GCP image detail +type ReleaseGcp struct { + Artifacts map[string]*ImageFormat `json:"artifacts"` + Image *string `json:"image"` +} + +// ReleaseCloudImage cloud image information +type ReleaseCloudImage struct { + Image *string `json:"image"` +} + +// ReleaseTargetPlatform target platforms +type ReleaseTargetPlatform struct { + Artifacts map[string]*ImageFormat `json:"artifacts"` +} diff --git a/release_index.go b/release_index.go new file mode 100644 index 0000000..1957caf --- /dev/null +++ b/release_index.go @@ -0,0 +1,57 @@ +package main + +import ( + "encoding/json" + "fmt" + "net/http" + "net/url" + "os" +) + +// ReleaseIndex for accessing Release Index metadata +type ReleaseIndex struct { + Releases []Index `json:"releases"` +} + +// Index - details for single release +type Index struct { + Metadata string `json:"metadata"` +} + +// ReleaseURL gets path for latest release.json available +func ReleaseURL(releaseIndexURL string) (string, error) { + var relIndex ReleaseIndex + parsedURL, err := url.Parse(releaseIndexURL) + if err != nil { + return "", err + } + + var decoder *json.Decoder + if parsedURL.Scheme == "" { + // It is most likely a local file. + releases, err := os.Open(releaseIndexURL) + if err != nil { + return "", err + } + + defer releases.Close() + decoder = json.NewDecoder(releases) + } else { + resp, err := http.Get(releaseIndexURL) + if err != nil { + return "", err + } + + defer resp.Body.Close() + decoder = json.NewDecoder(resp.Body) + } + + if err := decoder.Decode(&relIndex); err != nil { + return "", err + } + if len(relIndex.Releases) < 1 { + return "", fmt.Errorf("No release available to process") + } + + return relIndex.Releases[len(relIndex.Releases)-1].Metadata, nil +} diff --git a/stream.go b/stream.go new file mode 100644 index 0000000..fff1154 --- /dev/null +++ b/stream.go @@ -0,0 +1,65 @@ +package main + +// StreamMetadata contains artifacts available in a stream +type StreamMetadata struct { + Stream string `json:"stream"` + Metadata Metadata `json:"metadata"` + Architectures map[string]*StreamArch `json:"architectures"` + Updates StreamUpdates `json:"updates"` +} + +// StreamArch release details for x86_64 architetcure +type StreamArch struct { + Artifacts StreamArtifacts `json:"artifacts"` + Images *StreamImages `json:"images,omitempty"` +} + +// StreamArtifacts contains shipped artifacts list +type StreamArtifacts struct { + Aws *StreamMediaDetails `json:"aws,omitempty"` + Azure *StreamMediaDetails `json:"azure,omitempty"` + Digitalocean *StreamMediaDetails `json:"digitalocean,omitempty"` + Gcp *StreamMediaDetails `json:"gcp,omitempty"` + Metal *StreamMediaDetails `json:"metal,omitempty"` + Openstack *StreamMediaDetails `json:"openstack,omitempty"` + Packet *StreamMediaDetails `json:"packet,omitempty"` + Qemu *StreamMediaDetails `json:"qemu,omitempty"` + Virtualbox *StreamMediaDetails `json:"virtualbox,omitempty"` + Vmware *StreamMediaDetails `json:"vmware,omitempty"` +} + +// StreamMediaDetails contains image artifact and release detail +type StreamMediaDetails struct { + Release string `json:"release"` + Formats map[string]*ImageFormat `json:"formats"` +} + +// StreamImages contains images available in cloud providers +type StreamImages struct { + Aws *StreamAwsImage `json:"aws,omitempty"` + Azure *StreamCloudImage `json:"azure,omitempty"` + Gcp *StreamCloudImage `json:"gcp,omitempty"` + Digitalocean *StreamCloudImage `json:"digitalocean,omitempty"` + Packet *StreamCloudImage `json:"packet,omitempty"` +} + +// StreamCloudImage image for Cloud provider +type StreamCloudImage struct { + Image string `json:"image,omitempty"` +} + +// StreamAwsImage Aws images +type StreamAwsImage struct { + Regions map[string]*StreamAwsAMI `json:"regions,omitempty"` +} + +// StreamAwsAMI aws AMI detail +type StreamAwsAMI struct { + Release string `json:"release"` + Image string `json:"image"` +} + +// StreamUpdates contains release version +type StreamUpdates struct { + Release string `json:"release"` +}