[pbs-devel] [RFC v2 proxmox-backup 23/42] sync: pull: conditionally upload content to S3 backend

[Christian Ebner]

If the datastore is backed by an S3 object store, not only insert the
pulled contents to the local cache store, but also upload it to the
S3 backend.

Signed-off-by: Christian Ebner <c.ebner at proxmox.com>
---
 src/server/pull.rs | 58 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

diff --git a/src/server/pull.rs b/src/server/pull.rs
index b1724c142..f36efd7c8 100644
--- a/src/server/pull.rs
+++ b/src/server/pull.rs
@@ -8,6 +8,7 @@ use std::time::SystemTime;
 
 use anyhow::{bail, format_err, Error};
 use proxmox_human_byte::HumanByte;
+use tokio::io::AsyncReadExt;
 use tracing::info;
 
 use pbs_api_types::{
@@ -24,7 +25,7 @@ use pbs_datastore::fixed_index::FixedIndexReader;
 use pbs_datastore::index::IndexFile;
 use pbs_datastore::manifest::{BackupManifest, FileInfo};
 use pbs_datastore::read_chunk::AsyncReadChunk;
-use pbs_datastore::{check_backup_owner, DataStore, StoreProgress};
+use pbs_datastore::{check_backup_owner, DataStore, DatastoreBackend, StoreProgress};
 use pbs_tools::sha::sha256;
 
 use super::sync::{
@@ -167,7 +168,18 @@ async fn pull_index_chunks<I: IndexFile>(
         move |(chunk, digest, size): (DataBlob, [u8; 32], u64)| {
             // println!("verify and write {}", hex::encode(&digest));
             chunk.verify_unencrypted(size as usize, &digest)?;
-            target2.insert_chunk(&chunk, &digest)?;
+            match target2.backend()? {
+                DatastoreBackend::Filesystem => {
+                    target2.insert_chunk(&chunk, &digest)?;
+                }
+                DatastoreBackend::S3(s3_client) => {
+                    let data = chunk.raw_data().to_vec();
+                    let upload_body = hyper::Body::from(data);
+                    proxmox_async::runtime::block_on(
+                        s3_client.put_object(digest.into(), upload_body),
+                    )?;
+                }
+            }
             Ok(())
         },
     );
@@ -331,6 +343,20 @@ async fn pull_single_archive<'a>(
     if let Err(err) = std::fs::rename(&tmp_path, &path) {
         bail!("Atomic rename file {:?} failed - {}", path, err);
     }
+    if let DatastoreBackend::S3(s3_client) = snapshot.datastore().backend()? {
+        let archive_path = snapshot.relative_path().join(archive_name);
+        let object_key = archive_path
+            .as_os_str()
+            .to_str()
+            .ok_or_else(|| format_err!("invalid archive path"))?;
+
+        let archive = tokio::fs::File::open(&path).await?;
+        let mut reader = tokio::io::BufReader::new(archive);
+        let mut contents = Vec::new();
+        reader.read_to_end(&mut contents).await?;
+        let data = hyper::body::Body::from(contents);
+        s3_client.put_object(object_key.into(), data).await?;
+    }
     Ok(sync_stats)
 }
 
@@ -401,6 +427,7 @@ async fn pull_snapshot<'a>(
         }
     }
 
+    let manifest_data = tmp_manifest_blob.raw_data().to_vec();
     let manifest = BackupManifest::try_from(tmp_manifest_blob)?;
 
     if ignore_not_verified_or_encrypted(
@@ -467,9 +494,36 @@ async fn pull_snapshot<'a>(
     if let Err(err) = std::fs::rename(&tmp_manifest_name, &manifest_name) {
         bail!("Atomic rename file {:?} failed - {}", manifest_name, err);
     }
+    if let DatastoreBackend::S3(s3_client) = snapshot.datastore().backend()? {
+        let object_path = snapshot.relative_path().join(MANIFEST_BLOB_NAME.as_ref());
+        let object_key = object_path
+            .as_os_str()
+            .to_str()
+            .ok_or_else(|| format_err!("invalid archive path"))?;
+
+        let data = hyper::body::Body::from(manifest_data);
+        s3_client.put_object(object_key.into(), data).await?;
+    }
 
     if !client_log_name.exists() {
         reader.try_download_client_log(&client_log_name).await?;
+        if client_log_name.exists() {
+            if let DatastoreBackend::S3(s3_client) = snapshot.datastore().backend()? {
+                let object_path = snapshot.relative_path().join(CLIENT_LOG_BLOB_NAME.as_ref());
+                let object_key = object_path
+                    .as_os_str()
+                    .to_str()
+                    .ok_or_else(|| format_err!("invalid archive path"))?;
+
+                let log_file = tokio::fs::File::open(&client_log_name).await?;
+                let mut reader = tokio::io::BufReader::new(log_file);
+                let mut contents = Vec::new();
+                reader.read_to_end(&mut contents).await?;
+
+                let data = hyper::body::Body::from(contents);
+                s3_client.put_object(object_key.into(), data).await?;
+            }
+        }
     };
     snapshot
         .cleanup_unreferenced_files(&manifest)
-- 
2.39.5