From dedc0f49d1f34b0defb6e82c449b70bdb948ecff Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Torjus=20H=C3=A5kestad?= Date: Mon, 8 Jul 2024 02:40:48 +0200 Subject: [PATCH] Initial commit --- .envrc | 1 + .gitignore | 1 + flake.lock | 27 ++++++++ flake.nix | 41 ++++++++++++ go.mod | 28 ++++++++ go.sum | 111 +++++++++++++++++++++++++++++++ main.go | 189 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 398 insertions(+) create mode 100644 .envrc create mode 100644 .gitignore create mode 100644 flake.lock create mode 100644 flake.nix create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go diff --git a/.envrc b/.envrc new file mode 100644 index 0000000..3550a30 --- /dev/null +++ b/.envrc @@ -0,0 +1 @@ +use flake diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..9b42106 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +.direnv/ diff --git a/flake.lock b/flake.lock new file mode 100644 index 0000000..ed5e17d --- /dev/null +++ b/flake.lock @@ -0,0 +1,27 @@ +{ + "nodes": { + "nixpkgs": { + "locked": { + "lastModified": 1720031269, + "narHash": "sha256-rwz8NJZV+387rnWpTYcXaRNvzUSnnF9aHONoJIYmiUQ=", + "owner": "nixos", + "repo": "nixpkgs", + "rev": "9f4128e00b0ae8ec65918efeba59db998750ead6", + "type": "github" + }, + "original": { + "owner": "nixos", + "ref": "nixos-unstable", + "repo": "nixpkgs", + "type": "github" + } + }, + "root": { + "inputs": { + "nixpkgs": "nixpkgs" + } + } + }, + "root": "root", + "version": 7 +} diff --git a/flake.nix b/flake.nix new file mode 100644 index 0000000..9708068 --- /dev/null +++ b/flake.nix @@ -0,0 +1,41 @@ +{ + description = "Print git stats for flake inputs"; + + inputs = { + nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable"; + }; + + outputs = { self, nixpkgs }: + let + allSystems = [ + "x86_64-linux" + "aarch64-linux" + "x86_64-darwin" + "aarch64-darwin" + ]; + + forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f { + pkgs = import nixpkgs { inherit system; }; + }); + in + { + overlays.default = final: prev: { + gflakestat = self.packages.${prev.system}.default; + }; + + packages = forAllSystems ({ pkgs }: { + default = pkgs.buildGoModule { + name = "gflakestat"; + src = ./.; + vendorHash = pkgs.lib.fakeHash; + }; + }); + devShells = forAllSystems ({ pkgs }: { + default = pkgs.mkShell { + packages = with pkgs; [ + go + ]; + }; + }); + }; +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..4698ad9 --- /dev/null +++ b/go.mod @@ -0,0 +1,28 @@ +module git.t-juice.club/torjus/gflakestat + +go 1.22.3 + +require ( + dario.cat/mergo v1.0.0 // indirect + github.com/Microsoft/go-winio v0.6.2 // indirect + github.com/ProtonMail/go-crypto v1.0.0 // indirect + github.com/cloudflare/circl v1.3.9 // indirect + github.com/cyphar/filepath-securejoin v0.2.5 // indirect + github.com/emirpasic/gods v1.18.1 // indirect + github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect + github.com/go-git/go-billy/v5 v5.5.0 // indirect + github.com/go-git/go-git/v5 v5.12.0 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect + github.com/kevinburke/ssh_config v1.2.0 // indirect + github.com/pjbgf/sha1cd v0.3.0 // indirect + github.com/sergi/go-diff v1.3.2-0.20230802210424-5b0b94c5c0d3 // indirect + github.com/skeema/knownhosts v1.2.2 // indirect + github.com/xanzy/ssh-agent v0.3.3 // indirect + golang.org/x/crypto v0.25.0 // indirect + golang.org/x/mod v0.19.0 // indirect + golang.org/x/net v0.27.0 // indirect + golang.org/x/sys v0.22.0 // indirect + golang.org/x/tools v0.22.0 // indirect + gopkg.in/warnings.v0 v0.1.2 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..210e6ba --- /dev/null +++ b/go.sum @@ -0,0 +1,111 @@ +dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk= +dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk= +github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY= +github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY= +github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU= +github.com/ProtonMail/go-crypto v1.0.0 h1:LRuvITjQWX+WIfr930YHG2HNfjR1uOfyf5vE0kC2U78= +github.com/ProtonMail/go-crypto v1.0.0/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0= +github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0= +github.com/cloudflare/circl v1.3.3/go.mod h1:5XYMA4rFBvNIrhs50XuiBJ15vF2pZn4nnUKZrLbUZFA= +github.com/cloudflare/circl v1.3.9 h1:QFrlgFYf2Qpi8bSpVPK1HBvWpx16v/1TZivyo7pGuBE= +github.com/cloudflare/circl v1.3.9/go.mod h1:PDRU+oXvdD7KCtgKxW95M5Z8BpSCJXQORiZFnBQS5QU= +github.com/cyphar/filepath-securejoin v0.2.5 h1:6iR5tXJ/e6tJZzzdMc1km3Sa7RRIVBKAK32O2s7AYfo= +github.com/cyphar/filepath-securejoin v0.2.5/go.mod h1:aPGpWjXOXUn2NCNjFvBE6aRxGGx79pTxQpKOJNYHHl4= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emirpasic/gods v1.18.1 h1:FXtiHYKDGKCW2KzwZKx0iC0PQmdlorYgdFG9jPXJ1Bc= +github.com/emirpasic/gods v1.18.1/go.mod h1:8tpGGwCnJ5H4r6BWwaV6OrWmMoPhUl5jm/FMNAnJvWQ= +github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 h1:+zs/tPmkDkHx3U66DAb0lQFJrpS6731Oaa12ikc+DiI= +github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376/go.mod h1:an3vInlBmSxCcxctByoQdvwPiA7DTK7jaaFDBTtu0ic= +github.com/go-git/go-billy/v5 v5.5.0 h1:yEY4yhzCDuMGSv83oGxiBotRzhwhNr8VZyphhiu+mTU= +github.com/go-git/go-billy/v5 v5.5.0/go.mod h1:hmexnoNsr2SJU1Ju67OaNz5ASJY3+sHgFRpCtpDCKow= +github.com/go-git/go-git/v5 v5.12.0 h1:7Md+ndsjrzZxbddRDZjF14qK+NN56sy6wkqaVrjZtys= +github.com/go-git/go-git/v5 v5.12.0/go.mod h1:FTM9VKtnI2m65hNI/TenDDDnUf2Q9FHnXYjuz9i5OEY= 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+gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/main.go b/main.go new file mode 100644 index 0000000..77d7425 --- /dev/null +++ b/main.go @@ -0,0 +1,189 @@ +package main + +import ( + "context" + "encoding/json" + "fmt" + "os" + "os/exec" + "time" + + "github.com/go-git/go-git/v5" + "github.com/go-git/go-git/v5/config" + "github.com/go-git/go-git/v5/plumbing" + "github.com/go-git/go-git/v5/plumbing/object" + "github.com/go-git/go-git/v5/plumbing/storer" + "github.com/go-git/go-git/v5/storage/memory" +) + +type UnixTimestamp struct { + time.Time +} + +func (ut *UnixTimestamp) UnmarshalJSON(bytes []byte) error { + var raw int64 + err := json.Unmarshal(bytes, &raw) + if err != nil { + fmt.Printf("error decoding timestamp: %s\n", err) + return err + } + + ut.Time = time.Unix(raw, 0) + return nil +} + +type Config struct { + FlakePath string + Interval time.Duration +} + +type FlakeMetadata struct { + Description string `json:"description"` + LastModified UnixTimestamp `json:"lastModified"` + Locks struct { + Nodes map[string]struct { + Locked struct { + LastModified UnixTimestamp `json:"lastModified"` + NARHash string `json:"narHash"` + Owner string `json:"owner"` + Repo string `json:"repo"` + Rev string `json:"rev"` + Ref string `json:"ref"` + Type string `json:"type"` + URL string `json:"url"` + } `json:"locked"` + Original struct { + Owner string `json:"owner"` + Repo string `json:"repo"` + Type string `json:"type"` + Ref string `json:"ref"` + } `json:"original"` + } `json:"nodes"` + } `json:"locks"` +} + +func LoadConfig() (*Config, error) { + var c Config + if path := os.Getenv("GFLAKESTAT_PATH"); path != "" { + c.FlakePath = path + } else { + return nil, fmt.Errorf("GFLAKESTAT_PATH not set or empty") + } + + if interval := os.Getenv("GFLAKESTAT_INTERVAL"); interval != "" { + if dur, err := time.ParseDuration(interval); err != nil { + return nil, fmt.Errorf("failed parsing duration: %w", err) + } else { + c.Interval = dur + } + } else { + c.Interval = 30 * time.Minute + } + + return &c, nil +} + +func ReadFlakeMetadata(cfg *Config) (*FlakeMetadata, error) { + args := []string{ + "flake", + "metadata", + "--json", + cfg.FlakePath, + } + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + + cmd := exec.CommandContext(ctx, "nix", args...) + + output, err := cmd.Output() + if err != nil { + return nil, err + } + + var metadata FlakeMetadata + + if err := json.Unmarshal(output, &metadata); err != nil { + return nil, err + } + + return &metadata, nil +} + +func main() { + cfg, err := LoadConfig() + if err != nil { + fmt.Printf("Error loading config from env: %s\n", err) + os.Exit(1) + } + + metadata, err := ReadFlakeMetadata(cfg) + if err != nil { + fmt.Printf("Error reading flake metadata: %s\n", err) + os.Exit(1) + } + + for key, val := range metadata.Locks.Nodes { + if key != "nixpkgs" { + continue + } + var url string + switch val.Locked.Type { + case "github": + url = fmt.Sprintf("https://github.com/%s/%s.git", val.Locked.Owner, val.Locked.Repo) + case "git": + url = val.Locked.URL + } + + branchName := "refs/heads/nixos-unstable" + + repo, err := git.Init(memory.NewStorage(), nil) + if err != nil { + panic(err) + } + + if _, err := repo.CreateRemote(&config.RemoteConfig{ + Name: "origin", + URLs: []string{url}, + }); err != nil { + panic(err) + } + fmt.Println("Starting fetch") + + err = repo.Fetch(&git.FetchOptions{ + RemoteName: "origin", + RefSpecs: []config.RefSpec{config.RefSpec(branchName + ":" + branchName)}, + Depth: 1, // Shallow fetch to minimize data transfer + }) + if err != nil { + panic(err) + } + fmt.Println("Fetch done") + + ref, err := repo.Reference(plumbing.ReferenceName(branchName), true) + if err != nil { + panic(err) + } + latestCommit, err := repo.CommitObject(ref.Hash()) + if err != nil { + panic(err) + } + startCommit, err := repo.CommitObject(plumbing.NewHash(val.Locked.Ref)) + if err != nil { + panic(err) + } + count := 0 + commitIter := latestCommit.Parents() + err = commitIter.ForEach(func(commit *object.Commit) error { + count++ + if commit.Hash == startCommit.Hash { + return storer.ErrStop + } + return nil + }) + if err != nil { + panic(err) + } + + fmt.Printf("%s: %s: %d\n", key, url, count) + } +}