store/disk.go

@@ -101,6 +101,12 @@ func (d *DiskStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
 
 // Put stores the blob on disk
 func (d *DiskStore) Put(hash string, blob stream.Blob) error {
+	start := time.Now()
+	defer func() {
+		if time.Since(start) > 100*time.Millisecond {
+			log.Infof("it took %s to write %s", time.Since(start), hash)
+		}
+	}()
 	err := d.initOnce()
 	if err != nil {
 		return err
@@ -110,8 +116,26 @@ func (d *DiskStore) Put(hash string, blob stream.Blob) error {
 	if err != nil {
 		return err
 	}
-
+	hashBytes := sha512.Sum384(blob)
+	readHash := hex.EncodeToString(hashBytes[:])
+	matchesBeforeWriting := readHash == hash
 	err = ioutil.WriteFile(d.path(hash), blob, 0644)
+	if err != nil {
+		log.Errorf("Error saving to disk: %s", err.Error())
+	}
+	readBlob, err := ioutil.ReadFile(d.path(hash))
+	matchesAfterReading := false
+	if err != nil {
+		log.Errorf("for some fucking reasons I can't read the blob I just wrote %s", err.Error())
+	} else {
+		hashBytes = sha512.Sum384(readBlob)
+		readHash = hex.EncodeToString(hashBytes[:])
+		matchesAfterReading = readHash == hash
+	}
+
+	log.Infof(`writing %s to disk: hash match: %t, error: %t
+reading after writing: hash match: %t`, hash, matchesBeforeWriting, err == nil, matchesAfterReading)
+
 	return errors.Err(err)
 }