Add new job queue for historical blocks processing (#442)

* Add TODOs for historical blocks processing

* Add new job for historical blocks processing

* Handle historical job completion

* Fetch latest block in chain and start historical block processing

* Fix starting realtime block processing from latest canonical block

* Refactor historical block processing method and add logs

* Add dummy indexer methods in graph-node to pass test

* Changes in codegen for historical processing in generated watcher

packages/graph-node/test/utils/indexer.ts

@@ -93,6 +93,12 @@ export class Indexer implements IndexerInterface {
     return [];
   }
 
+  async getLatestProcessedBlockProgress (isPruned: boolean): Promise<BlockProgressInterface | undefined> {
+    assert(isPruned);
+
+    return undefined;
+  }
+
   async getBlockEvents (blockHash: string): Promise<Array<EventInterface>> {
     assert(blockHash);
 
@@ -150,6 +156,13 @@ export class Indexer implements IndexerInterface {
     return {} as SyncStatusInterface;
   }
 
+  async forceUpdateSyncStatus (blockHash: string, blockNumber: number): Promise<SyncStatusInterface> {
+    assert(blockNumber);
+    assert(blockHash);
+
+    return {} as SyncStatusInterface;
+  }
+
   async markBlocksAsPruned (blocks: BlockProgressInterface[]): Promise<void> {
     assert(blocks);