make scheduler accept multiple batch handlers

meilisearch-lib/src/dump/loaders/v4.rs

@@ -0,0 +1,48 @@
+use std::path::Path;
+use std::sync::Arc;
+
+use log::info;
+use meilisearch_auth::AuthController;
+use milli::heed::EnvOpenOptions;
+
+use crate::analytics;
+use crate::dump::Metadata;
+use crate::index_resolver::IndexResolver;
+use crate::options::IndexerOpts;
+use crate::tasks::TaskStore;
+use crate::update_file_store::UpdateFileStore;
+
+pub fn load_dump(
+    meta: Metadata,
+    src: impl AsRef<Path>,
+    dst: impl AsRef<Path>,
+    index_db_size: usize,
+    meta_env_size: usize,
+    indexing_options: &IndexerOpts,
+) -> anyhow::Result<()> {
+    info!(
+        "Loading dump from {}, dump database version: {}, dump version: V4",
+        meta.dump_date, meta.db_version
+    );
+
+    let mut options = EnvOpenOptions::new();
+    options.map_size(meta_env_size);
+    options.max_dbs(100);
+    let env = Arc::new(options.open(&dst)?);
+
+    IndexResolver::load_dump(
+        src.as_ref(),
+        &dst,
+        index_db_size,
+        env.clone(),
+        indexing_options,
+    )?;
+    UpdateFileStore::load_dump(src.as_ref(), &dst)?;
+    TaskStore::load_dump(&src, env)?;
+    AuthController::load_dump(&src, &dst)?;
+    analytics::copy_user_id(src.as_ref(), dst.as_ref());
+
+    info!("Loading indexes.");
+
+    Ok(())
+}