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..8f63462 --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +*.swp +.direnv +pad-archiver +result +testgit diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml index 90d250c..02b0d52 100644 --- a/.gitlab-ci.yml +++ b/.gitlab-ci.yml @@ -12,5 +12,6 @@ build_image: rules: - if: '$CI_DEFAULT_BRANCH == $CI_COMMIT_BRANCH' script: + - go build - docker build -t $IMAGE_NAME:$CI_COMMIT_BRANCH . - docker push $IMAGE_NAME:$CI_COMMIT_BRANCH diff --git a/Dockerfile b/Dockerfile index c6ee901..a4ddc38 100644 --- a/Dockerfile +++ b/Dockerfile @@ -2,7 +2,7 @@ FROM alpine/git RUN apk add --no-cache curl -ADD ./update /usr/bin/update +ADD ./pad-archiver /usr/bin/pad-archiver # Override ENTRYPOINT of alpine/git ENTRYPOINT /bin/sh diff --git a/flake.lock b/flake.lock new file mode 100644 index 0000000..efd85da --- /dev/null +++ b/flake.lock @@ -0,0 +1,39 @@ +{ + "nodes": { + "flake-utils": { + "locked": { + "lastModified": 1652776076, + "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=", + "owner": "numtide", + "repo": "flake-utils", + "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8", + "type": "github" + }, + "original": { + "owner": "numtide", + "repo": "flake-utils", + "type": "github" + } + }, + "nixpkgs": { + "locked": { + "lastModified": 0, + "narHash": "sha256-GNay7yDPtLcRcKCNHldug85AhAvBpTtPEJWSSDYBw8U=", + "path": "/nix/store/yyddvwq452qsvpgb104mllpq0hkkmsqx-source", + "type": "path" + }, + "original": { + "id": "nixpkgs", + "type": "indirect" + } + }, + "root": { + "inputs": { + "flake-utils": "flake-utils", + "nixpkgs": "nixpkgs" + } + } + }, + "root": "root", + "version": 7 +} diff --git a/flake.nix b/flake.nix new file mode 100644 index 0000000..42e94c1 --- /dev/null +++ b/flake.nix @@ -0,0 +1,29 @@ +{ + description = "Flake utils demo"; + + inputs.flake-utils.url = "github:numtide/flake-utils"; + + outputs = { self, nixpkgs, flake-utils }: + flake-utils.lib.eachDefaultSystem (system: + let pkgs = nixpkgs.legacyPackages.${system}; in + rec { + packages = flake-utils.lib.flattenTree { + pad-archiver = pkgs.callPackage ./nix { pkgs = pkgs; }; + gitAndTools = pkgs.gitAndTools; + }; + defaultPackage = packages.pad-archiver; + apps.pad-archiver = flake-utils.lib.mkApp { drv = packages.pad-archiver; }; + defaultApp = apps.pad-archiver; + devShell = pkgs.mkShell { + buildInputs = with pkgs; [ + go + gopls + gotools + go-tools + go-langserver + gopls + ]; + }; + } + ); +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..f53a2c5 --- /dev/null +++ b/go.mod @@ -0,0 +1,24 @@ +module git.fginfo.tu-bs.de/fginfo/pad-archiver + +go 1.17 + +require github.com/go-git/go-git/v5 v5.4.2 + +require ( + github.com/Microsoft/go-winio v0.4.16 // indirect + github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7 // indirect + github.com/acomagu/bufpipe v1.0.3 // indirect + github.com/emirpasic/gods v1.12.0 // indirect + github.com/go-git/gcfg v1.5.0 // indirect + github.com/go-git/go-billy/v5 v5.3.1 // indirect + github.com/imdario/mergo v0.3.12 // indirect + github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect + github.com/kevinburke/ssh_config v0.0.0-20201106050909-4977a11b4351 // indirect + github.com/mitchellh/go-homedir v1.1.0 // indirect + github.com/sergi/go-diff v1.1.0 // indirect + github.com/xanzy/ssh-agent v0.3.0 // indirect + golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect + golang.org/x/net v0.0.0-20210326060303-6b1517762897 // indirect + golang.org/x/sys v0.0.0-20210502180810-71e4cd670f79 // indirect + gopkg.in/warnings.v0 v0.1.2 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..6fd93b0 --- /dev/null +++ b/go.sum @@ -0,0 +1,101 @@ +github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA= 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v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs= +github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emirpasic/gods v1.12.0 h1:QAUIPSaCu4G+POclxeqb3F+WPpdKqFGlw36+yOzGlrg= +github.com/emirpasic/gods v1.12.0/go.mod h1:YfzfFFoVP/catgzJb4IKIqXjX78Ha8FMSDh3ymbK86o= +github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc= +github.com/gliderlabs/ssh v0.2.2 h1:6zsha5zo/TWhRhwqCD3+EarCAgZ2yN28ipRnGPnwkI0= +github.com/gliderlabs/ssh v0.2.2/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0= +github.com/go-git/gcfg v1.5.0 h1:Q5ViNfGF8zFgyJWPqYwA7qGFoMTEiBmdlkcfRmpIMa4= 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v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k= +golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= +gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= +gopkg.in/warnings.v0 v0.1.2 h1:wFXVbFY8DY5/xOe1ECiWdKCzZlxgshcYVNkBHstARME= +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 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU= +gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/lib/gitlab-ci.yml b/lib/gitlab-ci.yml index 81bab01..67f1692 100644 --- a/lib/gitlab-ci.yml +++ b/lib/gitlab-ci.yml @@ -12,5 +12,5 @@ update: - git config --global user.email "git@git.fginfo.tu-bs.de" - git config --global user.name "Gitlab CI" script: - - update < pads.txt + - pad-archiver < pads.txt - git push "https://gitlab-ci-token:${CI_ACCESS_TOKEN}@${CI_REPOSITORY_URL#*@}" "HEAD:${CI_COMMIT_REF_NAME}" -o skip-ci diff --git a/main.go b/main.go new file mode 100644 index 0000000..facc960 --- /dev/null +++ b/main.go @@ -0,0 +1,135 @@ +package main + +import ( + "bufio" + "flag" + "fmt" + "io" + "log" + "net/http" + "os" + "path" + "path/filepath" + "time" + "crypto/tls" + "sync" + + "github.com/go-git/go-git/v5" + "github.com/go-git/go-git/v5/plumbing" + "github.com/go-git/go-git/v5/plumbing/object" +) + +var commitmu sync.Mutex + +func commit( + tree *git.Worktree, + padfile string, + url string, +) (plumbing.Hash, error) { + commitmu.Lock() + defer commitmu.Unlock() + + commit, err := tree.Commit( + fmt.Sprintf("Updated %s from %s", padfile, url), + &git.CommitOptions{ + Author: &object.Signature { + Name: "Pad Archiver", + Email: "pad-archiver@dadada.li", + When: time.Now(), + }, + }, + ) + + if err != nil { + return plumbing.ZeroHash, fmt.Errorf("Failed to commit %s: %w", padfile, err) + } + + return commit, nil +} + +func update( + tree *git.Worktree, + url string, +) (plumbing.Hash, error) { + res, err := http.Get(url + "/export/txt") + if err != nil { + return plumbing.ZeroHash, fmt.Errorf("Failed to get pad at %s: %w", url, err) + } + + defer res.Body.Close() + + padfile := path.Base(url) + ".txt" + + padpath := filepath.Join(tree.Filesystem.Root(), padfile) + out, err := os.Create(padpath) + + written, err := io.Copy(out, res.Body) + if err != nil { + return plumbing.ZeroHash, fmt.Errorf("Failed to write pad to file at %s: %w", padfile, err) + } + + if written < 100 { + return plumbing.ZeroHash, fmt.Errorf("Skipping update of %s, because pad has likely been removed from %s", padfile, url) + } + + status, err := tree.Status() + if err != nil { + return plumbing.ZeroHash, fmt.Errorf("Failed to get status of %s: %w", padfile, err) + } + + if status.IsClean() { + return plumbing.ZeroHash, fmt.Errorf("No changes recorded for %s", url) + } + + if _, err = tree.Add(padfile); err != nil { + return plumbing.ZeroHash, fmt.Errorf("Failed to stage %s: %w", padfile, err) + } + + return commit(tree, padfile, url) +} + +func main() { + http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true} + + cwd, err := os.Getwd() + if err != nil { + log.Fatalf("Failed to get working directory %s", err) + } + + gitdir := flag.String( + "C", + cwd, + "git directory", + ) + flag.Parse() + + repo, err := git.PlainOpen(*gitdir) + if err != nil { + log.Fatalf("Failed to open git repo %s: %s", *gitdir, err) + } + + tree, err := repo.Worktree() + if err != nil { + log.Fatalf("Failed to open git worktree %s", err) + } + + scanner := bufio.NewScanner(os.Stdin) + + var wg sync.WaitGroup + for scanner.Scan() { + wg.Add(1) + padurl := scanner.Text() + + go func() { + defer wg.Done() + if _, err := update(tree, padurl); err != nil { + log.Printf("%s", err) + } else { + log.Printf("Updated %s", padurl) + } + }() + } + wg.Wait() + + tree.Clean(&git.CleanOptions{}) +} diff --git a/nix/default.nix b/nix/default.nix new file mode 100644 index 0000000..a02f5aa --- /dev/null +++ b/nix/default.nix @@ -0,0 +1,13 @@ +{ pkgs, lib, buildGoModule }: +buildGoModule { + pname = "pad-archiver"; + version = "0.0.1"; + src = ../.; + vendorSha256 = "sha256-e9I2mhSjLxMuCO9+g13XbDYI15Q879iG1AGZv6otuEA="; + meta = with lib; { + description = "Archives Etherpads with git"; + homepage = "https://git.fginfo.tu-bs.de/fginfo/pad-archiver"; + license = licenses.mit; + maintainers = [ "y0067212" ]; + }; +} diff --git a/update b/update deleted file mode 100755 index 827b2e5..0000000 --- a/update +++ /dev/null @@ -1,44 +0,0 @@ -#!/bin/sh - -update() { - url="$1" - pad="$(basename "$url").txt" - dst="$gitdir/$pad" - - curl --silent -k -o "${dst}" "${url}/export/txt" - status="$?" - if [ ${status} -ne 0 ]; then - echo -e "\e[1;31mFailed to get pad at ${url}\e[0m" - return - fi - - newlength="$(wc -l < "${dst}")" - if [ "$newlength" -lt 3 ] - then - echo -e "\e[1;33mSkipping update of ${url}, because pad has likely been removed\e[0m" - return - fi - - git -C "${gitdir}" add "${dst}" - changes=$(git -C "${gitdir}" diff --cached | wc -l) - if [ "$changes" -lt 1 ]; then - echo -e "\e[1;34mNothing changed for ${url}\e[0m" - return - fi - - git -C "${gitdir}" commit -m "Updated: ${dst} from ${url}" > /dev/null - echo "\e[1;32mUpdated ${dst} from ${url}\e[0m" -} - -if ! git rev-parse --is-inside-work-tree > /dev/null 2>&1 -then - echo -e "\e[1;31mNot a git directory\e[0m" - exit 1 -fi - -gitdir="$(realpath "${1:-$PWD}")" -while read -r pad -do - update "$pad" - git -C "${gitdir}" reset --hard HEAD > /dev/null -done