AppendCellsMetaFromContext extract valid header names from context and push them to the request Headers.

CanonicalMeta extract header name or its lowercase version.

ContextMetadata wraps micro lib metadata.FromContext call.

MinioMetaFromContext prepares metadata for minio client, merging context medata and eventually the Context User Key value (X-Pydio-User).

WithAdditionalMetadata retrieves existing meta, adds new key/values to the map and produces a new context.

ContextWithMetaCopy makes sure the metadata map will is replicated and unique to this context.

WithMetadata wraps micro lib metadata.NewContext call.

WithUserNameMetadata appends a user name to both the context metadata and as context key.