Modernize

[go-anidb.git] / titlecache.go

diff --git a/titlecache.go b/titlecache.go
index 1100df085bc1eed4c4fa23863821e7529ce8dc7a..c87dac38671781e54263c88829bda865219446d3 100644 (file)
--- a/titlecache.go
+++ b/titlecache.go
@@ -1,21 +1,25 @@
 package anidb
 
 import (
-       "github.com/Kovensky/go-anidb/titles"
+       "bytes"
+       "github.com/EliasFleckenstein03/go-anidb/titles"
        "io"
        "net/http"
+       "os"
        "time"
 )
 
 var titlesDB = &titles.TitlesDatabase{}
 
-// Reloads titles from the cache.
+// Loads the database from anime-titles.dat.gz in the cache dir.
 func RefreshTitles() error {
-       flock := lockFile(cachePath("anime-titles.dat.gz"))
-       flock.Lock()
-       defer flock.Unlock()
+       if lock, err := Cache.Lock("anime-titles.dat.gz"); err != nil {
+               return err
+       } else {
+               defer lock.Unlock()
+       }
 
-       fh, err := cache.Open("anime-titles.dat.gz")
+       fh, err := Cache.Open("anime-titles.dat.gz")
        if err != nil {
                return err
        }
@@ -30,36 +34,63 @@ func TitlesUpToDate() (ok bool) {
        return time.Now().Sub(titlesDB.UpdateTime) < 24*time.Hour
 }
 
+// Returns the number of anime in the titles database
+func AnimeCount() int {
+       return len(titlesDB.AnimeMap)
+}
+
 // Downloads a new anime-titles database if the database is outdated.
 //
-// Caches the contents on memory, which gets saved by DumpCaches.
-func UpdateTitles() error {
+// Saves the database as anime-titles.dat.gz in the cache dir.
+func (adb *AniDB) UpdateTitles() error {
+       // needs the AniDB for the Logger
+
        // too new, no need to update
        if TitlesUpToDate() {
                return nil
        }
 
-       flock := lockFile(cachePath("anime-titles.dat.gz"))
-       flock.Lock()
-       defer flock.Unlock()
+       switch lock, err := Cache.Lock("anime-titles.dat.gz"); {
+       case os.IsNotExist(err):
+               // we're creating it now
+       case err == nil:
+               defer lock.Unlock()
+       default:
+               return err
+       }
 
        c := &http.Client{Transport: &http.Transport{DisableCompression: true}}
 
+       adb.Logger.Printf("HTTP>>> %s", titles.DataDumpURL)
+
        resp, err := c.Get(titles.DataDumpURL)
        if err != nil {
+               adb.Logger.Printf("HTTP<<< %s", resp.Status)
                return err
        }
        defer resp.Body.Close()
 
-       fh, err := cache.Create("anime-titles.dat.gz")
+       buf := bytes.Buffer{}
+       adb.Logger.Printf("HTTP--- %s", resp.Status)
+
+       _, err = io.Copy(&buf, resp.Body)
+       if err != nil {
+               adb.Logger.Printf("HTTP--- %v", err)
+               return err
+       }
+
+       fh, err := Cache.Create("anime-titles.dat.gz")
        if err != nil {
                return err
        }
 
-       _, err = io.Copy(fh, resp.Body)
+       _, err = io.Copy(fh, &buf)
        if err != nil {
                return err
        }
 
+       defer func() {
+               adb.Logger.Printf("HTTP<<< Titles version %s", titlesDB.UpdateTime)
+       }()
        return RefreshTitles()
 }