func RedecodeContact(contactdb *db.ContactDB, c *pb.Contact) {
if c == nil {
log.Fatalf("Contact not found")
}
log.Printf("Original contact:\n%s\n", proto.MarshalTextString(c))
new_blobs := make([]*pb.Contact_Blob, 0)
var freeform []byte
for _, b := range c.Blob {
if b.Format != nil && (*b.Format == pb.Contact_Blob_DATUM ||
*b.Format == pb.Contact_Blob_FRAME) {
// Strip out datums and frames.
continue
}
new_blobs = append(new_blobs, b)
if b.Format != nil && *b.Format == pb.Contact_Blob_FREEFORM {
if freeform != nil {
log.Fatalf("Contact contains multiple FREEFORM blobs.")
}
freeform = b.InlineData
}
}
if freeform == nil {
return
}
data, frames := telemetry.DecodeFreeform(
*c.SatelliteId, freeform, *c.StartTimestamp)
for i, _ := range frames {
b := new(pb.Contact_Blob)
b.Format = pb.Contact_Blob_FRAME.Enum()
b.InlineData = frames[i]
new_blobs = append(new_blobs, b)
}
for i, _ := range data {
b := new(pb.Contact_Blob)
b.Format = pb.Contact_Blob_DATUM.Enum()
b.Datum = &data[i]
new_blobs = append(new_blobs, b)
}
c.Blob = new_blobs
log.Printf("New contact:\n%s\n", proto.MarshalTextString(c))
err := contactdb.Store(c)
if err != nil {
log.Fatalf("Error storing contact: %s", err.Error())
}
}
// Try to decode morse messages and data frames.
// This should really be done asynchronously by the telemetry pipeline.
func DecodeBlobs(
satellite_id string, timestamp int64, blobs []pb.Contact_Blob) (
result []*pb.Contact_Blob, err error) {
var datums []pb.TelemetryDatum
var new_frames [][]byte
for _, b := range blobs {
if b.Format == nil {
log.Printf("Missing blob format.")
continue
}
if *b.Format == pb.Contact_Blob_FREEFORM {
d, f := telemetry.DecodeFreeform(
satellite_id, b.InlineData, timestamp)
datums = append(datums, d...)
new_frames = append(new_frames, f...)
} else if *b.Format == pb.Contact_Blob_MORSE {
d, _ := telemetry.DecodeMorse(
satellite_id,
(string)(b.InlineData),
timestamp)
datums = append(datums, d...)
} else if *b.Format == pb.Contact_Blob_FRAME {
d, _ := telemetry.DecodeFrame(
satellite_id, b.InlineData, timestamp)
datums = append(datums, d...)
} else {
log.Printf("Unknown blob format: %v", *b.Format)
return nil, NewPopulateContactError(
http.StatusBadRequest, "Unknown format.")
}
}
for _, f := range new_frames {
b := &pb.Contact_Blob{}
b.Format = pb.Contact_Blob_FRAME.Enum()
b.InlineData = []byte(f)
result = append(result, b)
}
for _, d := range datums {
b := &pb.Contact_Blob{}
b.Format = pb.Contact_Blob_DATUM.Enum()
b.Datum = &pb.TelemetryDatum{}
*b.Datum = d
result = append(result, b)
}
return result, nil
}