Merge pull request #1033 from JuliaRobotics/23Q3/enh/betterdata

better data handling

Author: dehann

src/DataBlobs/services/BlobPacking.jl

@@ -51,6 +51,9 @@ function unpackBlob(::Type{format"JSON"}, blob::Vector{UInt8})
     return String(copy(blob))
 end
 
+unpackBlob(entry::BlobEntry, blob::Vector{UInt8}) = unpackBlob(entry.mimeType, blob)
+unpackBlob(eb::Pair{<:BlobEntry, Vector{UInt8}}) = unpackBlob(eb[1], eb[2])
+
 
 # 2/ FileIO
 function packBlob(::Type{T}, data::Any; kwargs...) where T <: DataFormat

src/DataBlobs/services/HelpersDataWrapEntryBlob.jl

@@ -92,8 +92,12 @@ function getData(
     lbls = (s->s.label).(de_)
     idx = sortperm(lbls; rev=getlast)
     _first(s) = s
-    _first(s::AbstractVector) = s[1]
+    _first(s::AbstractVector) = 0 < length(s) ? s[1] : nothing
     de = _first(de_[idx])
+    if isnothing(de)
+        @error "Could not find in $vlabel the key $key"
+        return nothing
+    end
     db = getBlob(dfg, de)
 
     checkhash && assertHash(de, db, hashfunction=hashfunction)