Merge branch 'liw/checksum-types-try2' into 'main'

add support for migrating to new checksum types

Closes #203

See merge request obnam/obnam!228

1 files changed, 5 insertions, 0 deletions

diff --git a/src/genmeta.rs b/src/genmeta.rs
index 2ce4c4c..d5b14a3 100644
--- a/src/genmeta.rs
+++ b/src/genmeta.rs
@@ -26,6 +26,11 @@ impl GenerationMeta {
     pub fn schema_version(&self) -> SchemaVersion {
         self.schema_version
     }
+
+    /// Get a value corresponding to a key in the meta table.
+    pub fn get(&self, key: &str) -> Option<&String> {
+        self.extras.get(key)
+    }
 }
 
 fn metastr(map: &mut HashMap<String, String>, key: &str) -> Result<String, GenerationMetaError> {