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168 lines
4.0 KiB
168 lines
4.0 KiB
package main
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"time"
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"github.com/adrg/frontmatter"
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cfgpkg "github.com/mediocregopher/blog.mediocregopher.com/srv/cfg"
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"github.com/mediocregopher/blog.mediocregopher.com/srv/post"
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"github.com/mediocregopher/mediocre-go-lib/v2/mctx"
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"github.com/mediocregopher/mediocre-go-lib/v2/mlog"
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)
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type postFrontmatter struct {
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Title string `yaml:"title"`
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Description string `yaml:"description"`
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Tags string `yaml:"tags"`
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Series string `yaml:"series"`
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Updated string `yaml:"updated"`
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}
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func parseDate(str string) (time.Time, error) {
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const layout = "2006-01-02"
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return time.Parse(layout, str)
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}
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var postNameRegexp = regexp.MustCompile(`(20..-..-..)-([^.]+).md`)
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func importPost(postStore post.Store, path string) (post.StoredPost, error) {
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fileName := filepath.Base(path)
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fileNameMatches := postNameRegexp.FindStringSubmatch(fileName)
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if len(fileNameMatches) != 3 {
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return post.StoredPost{}, fmt.Errorf("file name %q didn't match regex", fileName)
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}
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publishedAtStr := fileNameMatches[1]
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publishedAt, err := parseDate(publishedAtStr)
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if err != nil {
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return post.StoredPost{}, fmt.Errorf("parsing publish date %q: %w", publishedAtStr, err)
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}
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postID := fileNameMatches[2]
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f, err := os.Open(path)
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if err != nil {
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return post.StoredPost{}, fmt.Errorf("opening file: %w", err)
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}
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defer f.Close()
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var matter postFrontmatter
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body, err := frontmatter.Parse(f, &matter)
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if err != nil {
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return post.StoredPost{}, fmt.Errorf("parsing frontmatter: %w", err)
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}
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// if there is already a post for this ID, delete it, we're overwriting
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if err := postStore.Delete(postID); err != nil {
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return post.StoredPost{}, fmt.Errorf("deleting post id %q: %w", postID, err)
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}
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p := post.Post{
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ID: postID,
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Title: matter.Title,
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Description: matter.Description,
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Tags: strings.Fields(matter.Tags),
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Series: matter.Series,
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Body: string(body),
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}
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if _, err := postStore.Set(p, publishedAt); err != nil {
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return post.StoredPost{}, fmt.Errorf("storing post id %q: %w", p.ID, err)
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}
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if matter.Updated != "" {
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lastUpdatedAt, err := parseDate(matter.Updated)
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if err != nil {
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return post.StoredPost{}, fmt.Errorf("parsing updated date %q: %w", matter.Updated, err)
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}
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// as a hack, we store the post again with the updated date as now. This
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// will update the LastUpdatedAt field in the Store.
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if _, err := postStore.Set(p, lastUpdatedAt); err != nil {
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return post.StoredPost{}, fmt.Errorf("updating post id %q: %w", p.ID, err)
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}
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}
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storedPost, err := postStore.GetByID(p.ID)
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if err != nil {
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return post.StoredPost{}, fmt.Errorf("retrieving stored post by id %q: %w", p.ID, err)
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}
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return storedPost, nil
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}
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func main() {
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ctx := context.Background()
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cfg := cfgpkg.NewBlogCfg(cfgpkg.Params{})
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var dataDir cfgpkg.DataDir
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dataDir.SetupCfg(cfg)
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defer dataDir.Close()
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ctx = mctx.WithAnnotator(ctx, &dataDir)
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paths := cfg.Args("<post file paths...>")
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// initialization
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err := cfg.Init(ctx)
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logger := mlog.NewLogger(nil)
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defer logger.Close()
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logger.Info(ctx, "process started")
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defer logger.Info(ctx, "process exiting")
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if err != nil {
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logger.Fatal(ctx, "initializing", err)
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}
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if len(*paths) == 0 {
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logger.FatalString(ctx, "no paths given")
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}
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postDB, err := post.NewSQLDB(dataDir)
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if err != nil {
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logger.Fatal(ctx, "initializing post sql db", err)
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}
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defer postDB.Close()
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postStore := post.NewStore(postDB)
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for _, path := range *paths {
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ctx := mctx.Annotate(ctx, "postPath", path)
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storedPost, err := importPost(postStore, path)
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if err != nil {
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logger.Error(ctx, "importing post", err)
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}
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ctx = mctx.Annotate(ctx,
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"postID", storedPost.ID,
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"postTitle", storedPost.Title,
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"postDescription", storedPost.Description,
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"postTags", storedPost.Tags,
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"postSeries", storedPost.Series,
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"postPublishedAt", storedPost.PublishedAt,
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)
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if !storedPost.LastUpdatedAt.IsZero() {
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ctx = mctx.Annotate(ctx,
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"postLastUpdatedAt", storedPost.LastUpdatedAt)
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}
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logger.Info(ctx, "post stored")
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}
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}
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