From ade35e330801db60bc0fbbf0b0323c7d79137729 Mon Sep 17 00:00:00 2001
From: dehann <dehann.fourie@gmail.com>
Date: Tue, 15 Aug 2023 22:05:11 -0700
Subject: [PATCH] better data handling

---
 src/DataBlobs/services/BlobPacking.jl              | 3 +++
 src/DataBlobs/services/HelpersDataWrapEntryBlob.jl | 6 +++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/DataBlobs/services/BlobPacking.jl b/src/DataBlobs/services/BlobPacking.jl
index e64cf4e2..82a4df74 100644
--- a/src/DataBlobs/services/BlobPacking.jl
+++ b/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
diff --git a/src/DataBlobs/services/HelpersDataWrapEntryBlob.jl b/src/DataBlobs/services/HelpersDataWrapEntryBlob.jl
index 79df5175..38ea1f34 100644
--- a/src/DataBlobs/services/HelpersDataWrapEntryBlob.jl
+++ b/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)