Migrate indexing::LFS to task system, rather than ringbuffer

src/enclave/enclave.h

@@ -123,7 +123,7 @@ namespace ccf
       context->install_subsystem(indexer);
 
       lfs_access = std::make_shared<ccf::indexing::EnclaveLFSAccess>(
-        writer_factory->create_writer_to_outside());
+        ccf::tasks::get_main_job_board());
       context->install_subsystem(lfs_access);
 
       context->install_subsystem(std::make_shared<ccf::NodeOperation>(*node));
@@ -269,8 +269,6 @@ namespace ccf
         // reconstruct oversized messages sent to the enclave
         oversized::FragmentReconstructor fr(bp.get_dispatcher());
 
-        lfs_access->register_message_handlers(bp.get_dispatcher());
-
         DISPATCHER_SET_MESSAGE_HANDLER(
           bp, AdminMessage::stop, [this, &bp](const uint8_t*, size_t) {
             bp.set_finished();

src/host/run.cpp

@@ -35,7 +35,6 @@
 #include "host/files_cleanup_timer.h"
 #include "http_client/curl.h"
 #include "json_schema.h"
-#include "lfs_file_handler.h"
 #include "node_connections.h"
 #include "pal/quote_generation.h"
 #include "rpc_connections.h"
@@ -682,12 +681,6 @@ namespace ccf
         config.files_cleanup.max_committed_ledger_chunks);
     }
 
-    // handle LFS-related messages from the enclave
-    asynchost::LFSFileHandler lfs_file_handler(
-      writer_factory.create_writer_to_inside());
-    lfs_file_handler.register_message_handlers(
-      buffer_processor.get_dispatcher());
-
     // Setup node-to-node connections
     auto [node_host, node_port] =
       cli::validate_address(config.network.node_to_node_interface.bind_address);