Merge pull request #1307 from jkczyz/2022-02-block-source-self-ref

[rust-lightning] / lightning-block-sync / src / lib.rs

diff --git a/lightning-block-sync/src/lib.rs b/lightning-block-sync/src/lib.rs
index 8854aa3e8e4bf8186b6cc119451e62ddc6710fae..321dd57e4713a638c86ba4fc033a89473d0129af 100644 (file)
--- a/lightning-block-sync/src/lib.rs
+++ b/lightning-block-sync/src/lib.rs
@@ -61,11 +61,11 @@ pub trait BlockSource : Sync + Send {
        ///
        /// Implementations that cannot find headers based on the hash should return a `Transient` error
        /// when `height_hint` is `None`.
-       fn get_header<'a>(&'a mut self, header_hash: &'a BlockHash, height_hint: Option<u32>) -> AsyncBlockSourceResult<'a, BlockHeaderData>;
+       fn get_header<'a>(&'a self, header_hash: &'a BlockHash, height_hint: Option<u32>) -> AsyncBlockSourceResult<'a, BlockHeaderData>;
 
        /// Returns the block for a given hash. A headers-only block source should return a `Transient`
        /// error.
-       fn get_block<'a>(&'a mut self, header_hash: &'a BlockHash) -> AsyncBlockSourceResult<'a, Block>;
+       fn get_block<'a>(&'a self, header_hash: &'a BlockHash) -> AsyncBlockSourceResult<'a, Block>;
 
        /// Returns the hash of the best block and, optionally, its height.
        ///
@@ -73,7 +73,7 @@ pub trait BlockSource : Sync + Send {
        /// to allow for a more efficient lookup.
        ///
        /// [`get_header`]: Self::get_header
-       fn get_best_block<'a>(&'a mut self) -> AsyncBlockSourceResult<(BlockHash, Option<u32>)>;
+       fn get_best_block<'a>(&'a self) -> AsyncBlockSourceResult<(BlockHash, Option<u32>)>;
 }
 
 /// Result type for `BlockSource` requests.