728 lines
23 KiB
Rust
728 lines
23 KiB
Rust
use anyhow::{bail, format_err, Error};
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use futures::*;
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use hyper::header::{HeaderValue, UPGRADE};
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use hyper::http::request::Parts;
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use hyper::{Body, Response, StatusCode};
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use serde_json::{json, Value};
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use proxmox::{sortable, identity, list_subdirs_api_method};
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use proxmox::api::{ApiResponseFuture, ApiHandler, ApiMethod, Router, RpcEnvironment, Permission};
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use proxmox::api::router::SubdirMap;
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use proxmox::api::schema::*;
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use crate::tools::{self, WrappedReaderStream};
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use crate::server::{WorkerTask, H2Service};
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use crate::backup::*;
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use crate::api2::types::*;
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use crate::config::acl::PRIV_DATASTORE_BACKUP;
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use crate::config::cached_user_info::CachedUserInfo;
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mod environment;
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use environment::*;
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mod upload_chunk;
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use upload_chunk::*;
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pub const ROUTER: Router = Router::new()
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.upgrade(&API_METHOD_UPGRADE_BACKUP);
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#[sortable]
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pub const API_METHOD_UPGRADE_BACKUP: ApiMethod = ApiMethod::new(
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&ApiHandler::AsyncHttp(&upgrade_to_backup_protocol),
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&ObjectSchema::new(
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concat!("Upgraded to backup protocol ('", PROXMOX_BACKUP_PROTOCOL_ID_V1!(), "')."),
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&sorted!([
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("store", false, &DATASTORE_SCHEMA),
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("backup-type", false, &BACKUP_TYPE_SCHEMA),
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("backup-id", false, &BACKUP_ID_SCHEMA),
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("backup-time", false, &BACKUP_TIME_SCHEMA),
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("debug", true, &BooleanSchema::new("Enable verbose debug logging.").schema()),
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]),
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)
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).access(
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// Note: parameter 'store' is no uri parameter, so we need to test inside function body
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Some("The user needs Datastore.Backup privilege on /datastore/{store} and needs to own the backup group."),
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&Permission::Anybody
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);
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fn upgrade_to_backup_protocol(
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parts: Parts,
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req_body: Body,
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param: Value,
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_info: &ApiMethod,
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rpcenv: Box<dyn RpcEnvironment>,
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) -> ApiResponseFuture {
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async move {
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let debug = param["debug"].as_bool().unwrap_or(false);
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let username = rpcenv.get_user().unwrap();
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let store = tools::required_string_param(¶m, "store")?.to_owned();
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let user_info = CachedUserInfo::new()?;
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user_info.check_privs(&username, &["datastore", &store], PRIV_DATASTORE_BACKUP, false)?;
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let datastore = DataStore::lookup_datastore(&store)?;
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let backup_type = tools::required_string_param(¶m, "backup-type")?;
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let backup_id = tools::required_string_param(¶m, "backup-id")?;
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let backup_time = tools::required_integer_param(¶m, "backup-time")?;
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let protocols = parts
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.headers
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.get("UPGRADE")
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.ok_or_else(|| format_err!("missing Upgrade header"))?
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.to_str()?;
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if protocols != PROXMOX_BACKUP_PROTOCOL_ID_V1!() {
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bail!("invalid protocol name");
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}
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if parts.version >= http::version::Version::HTTP_2 {
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bail!("unexpected http version '{:?}' (expected version < 2)", parts.version);
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}
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let worker_id = format!("{}_{}_{}", store, backup_type, backup_id);
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let env_type = rpcenv.env_type();
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let backup_group = BackupGroup::new(backup_type, backup_id);
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let owner = datastore.create_backup_group(&backup_group, &username)?;
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// permission check
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if owner != username { // only the owner is allowed to create additional snapshots
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bail!("backup owner check failed ({} != {})", username, owner);
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}
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let last_backup = BackupInfo::last_backup(&datastore.base_path(), &backup_group).unwrap_or(None);
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let backup_dir = BackupDir::new_with_group(backup_group, backup_time);
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if let Some(last) = &last_backup {
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if backup_dir.backup_time() <= last.backup_dir.backup_time() {
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bail!("backup timestamp is older than last backup.");
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}
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// fixme: abort if last backup is still running - howto test?
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// Idea: write upid into a file inside snapshot dir. then test if
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// it is still running here.
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}
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let (path, is_new) = datastore.create_backup_dir(&backup_dir)?;
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if !is_new { bail!("backup directorty already exists."); }
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WorkerTask::spawn("backup", Some(worker_id), &username.clone(), true, move |worker| {
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let mut env = BackupEnvironment::new(
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env_type, username.clone(), worker.clone(), datastore, backup_dir);
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env.debug = debug;
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env.last_backup = last_backup;
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env.log(format!("starting new backup on datastore '{}': {:?}", store, path));
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let service = H2Service::new(env.clone(), worker.clone(), &BACKUP_API_ROUTER, debug);
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let abort_future = worker.abort_future();
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let env2 = env.clone();
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let mut req_fut = req_body
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.on_upgrade()
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.map_err(Error::from)
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.and_then(move |conn| {
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env2.debug("protocol upgrade done");
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let mut http = hyper::server::conn::Http::new();
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http.http2_only(true);
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// increase window size: todo - find optiomal size
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let window_size = 32*1024*1024; // max = (1 << 31) - 2
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http.http2_initial_stream_window_size(window_size);
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http.http2_initial_connection_window_size(window_size);
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http.serve_connection(conn, service)
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.map_err(Error::from)
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});
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let mut abort_future = abort_future
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.map(|_| Err(format_err!("task aborted")));
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async move {
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let res = select!{
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req = req_fut => req,
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abrt = abort_future => abrt,
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};
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match (res, env.ensure_finished()) {
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(Ok(_), Ok(())) => {
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env.log("backup finished sucessfully");
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Ok(())
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},
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(Err(err), Ok(())) => {
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// ignore errors after finish
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env.log(format!("backup had errors but finished: {}", err));
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Ok(())
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},
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(Ok(_), Err(err)) => {
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env.log(format!("backup ended and finish failed: {}", err));
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env.log("removing unfinished backup");
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env.remove_backup()?;
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Err(err)
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},
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(Err(err), Err(_)) => {
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env.log(format!("backup failed: {}", err));
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env.log("removing failed backup");
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env.remove_backup()?;
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Err(err)
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},
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}
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}
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})?;
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let response = Response::builder()
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.status(StatusCode::SWITCHING_PROTOCOLS)
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.header(UPGRADE, HeaderValue::from_static(PROXMOX_BACKUP_PROTOCOL_ID_V1!()))
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.body(Body::empty())?;
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Ok(response)
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}.boxed()
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}
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pub const BACKUP_API_SUBDIRS: SubdirMap = &[
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(
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"blob", &Router::new()
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.upload(&API_METHOD_UPLOAD_BLOB)
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),
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(
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"dynamic_chunk", &Router::new()
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.upload(&API_METHOD_UPLOAD_DYNAMIC_CHUNK)
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),
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(
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"dynamic_close", &Router::new()
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.post(&API_METHOD_CLOSE_DYNAMIC_INDEX)
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),
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(
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"dynamic_index", &Router::new()
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.download(&API_METHOD_DYNAMIC_CHUNK_INDEX)
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.post(&API_METHOD_CREATE_DYNAMIC_INDEX)
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.put(&API_METHOD_DYNAMIC_APPEND)
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),
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(
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"finish", &Router::new()
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.post(
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&ApiMethod::new(
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&ApiHandler::Sync(&finish_backup),
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&ObjectSchema::new("Mark backup as finished.", &[])
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)
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)
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),
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(
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"fixed_chunk", &Router::new()
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.upload(&API_METHOD_UPLOAD_FIXED_CHUNK)
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),
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(
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"fixed_close", &Router::new()
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.post(&API_METHOD_CLOSE_FIXED_INDEX)
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),
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(
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"fixed_index", &Router::new()
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.download(&API_METHOD_FIXED_CHUNK_INDEX)
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.post(&API_METHOD_CREATE_FIXED_INDEX)
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.put(&API_METHOD_FIXED_APPEND)
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),
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(
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"speedtest", &Router::new()
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.upload(&API_METHOD_UPLOAD_SPEEDTEST)
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),
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];
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pub const BACKUP_API_ROUTER: Router = Router::new()
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.get(&list_subdirs_api_method!(BACKUP_API_SUBDIRS))
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.subdirs(BACKUP_API_SUBDIRS);
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#[sortable]
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pub const API_METHOD_CREATE_DYNAMIC_INDEX: ApiMethod = ApiMethod::new(
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&ApiHandler::Sync(&create_dynamic_index),
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&ObjectSchema::new(
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"Create dynamic chunk index file.",
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&sorted!([
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("archive-name", false, &crate::api2::types::BACKUP_ARCHIVE_NAME_SCHEMA),
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]),
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)
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);
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fn create_dynamic_index(
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param: Value,
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_info: &ApiMethod,
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rpcenv: &mut dyn RpcEnvironment,
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) -> Result<Value, Error> {
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let env: &BackupEnvironment = rpcenv.as_ref();
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let name = tools::required_string_param(¶m, "archive-name")?.to_owned();
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let archive_name = name.clone();
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if !archive_name.ends_with(".didx") {
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bail!("wrong archive extension: '{}'", archive_name);
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}
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let mut path = env.backup_dir.relative_path();
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path.push(archive_name);
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let index = env.datastore.create_dynamic_writer(&path)?;
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let wid = env.register_dynamic_writer(index, name)?;
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env.log(format!("created new dynamic index {} ({:?})", wid, path));
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Ok(json!(wid))
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}
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#[sortable]
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pub const API_METHOD_CREATE_FIXED_INDEX: ApiMethod = ApiMethod::new(
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&ApiHandler::Sync(&create_fixed_index),
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&ObjectSchema::new(
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"Create fixed chunk index file.",
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&sorted!([
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("archive-name", false, &crate::api2::types::BACKUP_ARCHIVE_NAME_SCHEMA),
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("size", false, &IntegerSchema::new("File size.")
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.minimum(1)
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.schema()
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),
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]),
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)
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);
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fn create_fixed_index(
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param: Value,
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_info: &ApiMethod,
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rpcenv: &mut dyn RpcEnvironment,
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) -> Result<Value, Error> {
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let env: &BackupEnvironment = rpcenv.as_ref();
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println!("PARAM: {:?}", param);
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let name = tools::required_string_param(¶m, "archive-name")?.to_owned();
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let size = tools::required_integer_param(¶m, "size")? as usize;
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let archive_name = name.clone();
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if !archive_name.ends_with(".fidx") {
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bail!("wrong archive extension: '{}'", archive_name);
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}
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let mut path = env.backup_dir.relative_path();
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path.push(archive_name);
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let chunk_size = 4096*1024; // todo: ??
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let index = env.datastore.create_fixed_writer(&path, size, chunk_size)?;
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let wid = env.register_fixed_writer(index, name, size, chunk_size as u32)?;
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env.log(format!("created new fixed index {} ({:?})", wid, path));
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Ok(json!(wid))
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}
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#[sortable]
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pub const API_METHOD_DYNAMIC_APPEND: ApiMethod = ApiMethod::new(
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&ApiHandler::Sync(&dynamic_append),
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&ObjectSchema::new(
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"Append chunk to dynamic index writer.",
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&sorted!([
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(
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"wid",
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false,
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&IntegerSchema::new("Dynamic writer ID.")
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.minimum(1)
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.maximum(256)
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.schema()
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),
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(
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"digest-list",
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false,
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&ArraySchema::new("Chunk digest list.", &CHUNK_DIGEST_SCHEMA).schema()
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),
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(
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"offset-list",
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false,
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&ArraySchema::new(
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"Chunk offset list.",
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&IntegerSchema::new("Corresponding chunk offsets.")
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.minimum(0)
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.schema()
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).schema()
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),
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]),
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)
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);
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fn dynamic_append (
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param: Value,
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_info: &ApiMethod,
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rpcenv: &mut dyn RpcEnvironment,
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) -> Result<Value, Error> {
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let wid = tools::required_integer_param(¶m, "wid")? as usize;
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let digest_list = tools::required_array_param(¶m, "digest-list")?;
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let offset_list = tools::required_array_param(¶m, "offset-list")?;
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if offset_list.len() != digest_list.len() {
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bail!("offset list has wrong length ({} != {})", offset_list.len(), digest_list.len());
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}
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let env: &BackupEnvironment = rpcenv.as_ref();
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env.debug(format!("dynamic_append {} chunks", digest_list.len()));
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for (i, item) in digest_list.iter().enumerate() {
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let digest_str = item.as_str().unwrap();
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let digest = proxmox::tools::hex_to_digest(digest_str)?;
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let offset = offset_list[i].as_u64().unwrap();
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let size = env.lookup_chunk(&digest).ok_or_else(|| format_err!("no such chunk {}", digest_str))?;
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env.dynamic_writer_append_chunk(wid, offset, size, &digest)?;
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env.debug(format!("sucessfully added chunk {} to dynamic index {} (offset {}, size {})", digest_str, wid, offset, size));
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}
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Ok(Value::Null)
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}
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#[sortable]
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pub const API_METHOD_FIXED_APPEND: ApiMethod = ApiMethod::new(
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&ApiHandler::Sync(&fixed_append),
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&ObjectSchema::new(
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"Append chunk to fixed index writer.",
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&sorted!([
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(
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"wid",
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false,
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&IntegerSchema::new("Fixed writer ID.")
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.minimum(1)
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.maximum(256)
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.schema()
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),
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(
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"digest-list",
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false,
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&ArraySchema::new("Chunk digest list.", &CHUNK_DIGEST_SCHEMA).schema()
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),
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(
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"offset-list",
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false,
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&ArraySchema::new(
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"Chunk offset list.",
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&IntegerSchema::new("Corresponding chunk offsets.")
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.minimum(0)
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.schema()
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).schema()
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)
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]),
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)
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);
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fn fixed_append (
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param: Value,
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_info: &ApiMethod,
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rpcenv: &mut dyn RpcEnvironment,
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) -> Result<Value, Error> {
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let wid = tools::required_integer_param(¶m, "wid")? as usize;
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let digest_list = tools::required_array_param(¶m, "digest-list")?;
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let offset_list = tools::required_array_param(¶m, "offset-list")?;
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if offset_list.len() != digest_list.len() {
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bail!("offset list has wrong length ({} != {})", offset_list.len(), digest_list.len());
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}
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let env: &BackupEnvironment = rpcenv.as_ref();
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env.debug(format!("fixed_append {} chunks", digest_list.len()));
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for (i, item) in digest_list.iter().enumerate() {
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let digest_str = item.as_str().unwrap();
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let digest = proxmox::tools::hex_to_digest(digest_str)?;
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let offset = offset_list[i].as_u64().unwrap();
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let size = env.lookup_chunk(&digest).ok_or_else(|| format_err!("no such chunk {}", digest_str))?;
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env.fixed_writer_append_chunk(wid, offset, size, &digest)?;
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env.debug(format!("sucessfully added chunk {} to fixed index {} (offset {}, size {})", digest_str, wid, offset, size));
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}
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Ok(Value::Null)
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}
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#[sortable]
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pub const API_METHOD_CLOSE_DYNAMIC_INDEX: ApiMethod = ApiMethod::new(
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&ApiHandler::Sync(&close_dynamic_index),
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&ObjectSchema::new(
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"Close dynamic index writer.",
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&sorted!([
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(
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"wid",
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false,
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&IntegerSchema::new("Dynamic writer ID.")
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.minimum(1)
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.maximum(256)
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.schema()
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),
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(
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"chunk-count",
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false,
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&IntegerSchema::new("Chunk count. This is used to verify that the server got all chunks.")
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.minimum(1)
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.schema()
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),
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(
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"size",
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false,
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&IntegerSchema::new("File size. This is used to verify that the server got all data.")
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.minimum(1)
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.schema()
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),
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("csum", false, &StringSchema::new("Digest list checksum.").schema()),
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]),
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)
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);
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fn close_dynamic_index (
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param: Value,
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_info: &ApiMethod,
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rpcenv: &mut dyn RpcEnvironment,
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) -> Result<Value, Error> {
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let wid = tools::required_integer_param(¶m, "wid")? as usize;
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let chunk_count = tools::required_integer_param(¶m, "chunk-count")? as u64;
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let size = tools::required_integer_param(¶m, "size")? as u64;
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let csum_str = tools::required_string_param(¶m, "csum")?;
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let csum = proxmox::tools::hex_to_digest(csum_str)?;
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let env: &BackupEnvironment = rpcenv.as_ref();
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env.dynamic_writer_close(wid, chunk_count, size, csum)?;
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env.log(format!("sucessfully closed dynamic index {}", wid));
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Ok(Value::Null)
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}
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|
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#[sortable]
|
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pub const API_METHOD_CLOSE_FIXED_INDEX: ApiMethod = ApiMethod::new(
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&ApiHandler::Sync(&close_fixed_index),
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&ObjectSchema::new(
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"Close fixed index writer.",
|
|
&sorted!([
|
|
(
|
|
"wid",
|
|
false,
|
|
&IntegerSchema::new("Fixed writer ID.")
|
|
.minimum(1)
|
|
.maximum(256)
|
|
.schema()
|
|
),
|
|
(
|
|
"chunk-count",
|
|
false,
|
|
&IntegerSchema::new("Chunk count. This is used to verify that the server got all chunks.")
|
|
.minimum(1)
|
|
.schema()
|
|
),
|
|
(
|
|
"size",
|
|
false,
|
|
&IntegerSchema::new("File size. This is used to verify that the server got all data.")
|
|
.minimum(1)
|
|
.schema()
|
|
),
|
|
("csum", false, &StringSchema::new("Digest list checksum.").schema()),
|
|
]),
|
|
)
|
|
);
|
|
|
|
fn close_fixed_index (
|
|
param: Value,
|
|
_info: &ApiMethod,
|
|
rpcenv: &mut dyn RpcEnvironment,
|
|
) -> Result<Value, Error> {
|
|
|
|
let wid = tools::required_integer_param(¶m, "wid")? as usize;
|
|
let chunk_count = tools::required_integer_param(¶m, "chunk-count")? as u64;
|
|
let size = tools::required_integer_param(¶m, "size")? as u64;
|
|
let csum_str = tools::required_string_param(¶m, "csum")?;
|
|
let csum = proxmox::tools::hex_to_digest(csum_str)?;
|
|
|
|
let env: &BackupEnvironment = rpcenv.as_ref();
|
|
|
|
env.fixed_writer_close(wid, chunk_count, size, csum)?;
|
|
|
|
env.log(format!("sucessfully closed fixed index {}", wid));
|
|
|
|
Ok(Value::Null)
|
|
}
|
|
|
|
fn finish_backup (
|
|
_param: Value,
|
|
_info: &ApiMethod,
|
|
rpcenv: &mut dyn RpcEnvironment,
|
|
) -> Result<Value, Error> {
|
|
|
|
let env: &BackupEnvironment = rpcenv.as_ref();
|
|
|
|
env.finish_backup()?;
|
|
env.log("sucessfully finished backup");
|
|
|
|
Ok(Value::Null)
|
|
}
|
|
|
|
#[sortable]
|
|
pub const API_METHOD_DYNAMIC_CHUNK_INDEX: ApiMethod = ApiMethod::new(
|
|
&ApiHandler::AsyncHttp(&dynamic_chunk_index),
|
|
&ObjectSchema::new(
|
|
r###"
|
|
Download the dynamic chunk index from the previous backup.
|
|
Simply returns an empty list if this is the first backup.
|
|
"### ,
|
|
&sorted!([
|
|
("archive-name", false, &crate::api2::types::BACKUP_ARCHIVE_NAME_SCHEMA)
|
|
]),
|
|
)
|
|
);
|
|
|
|
fn dynamic_chunk_index(
|
|
_parts: Parts,
|
|
_req_body: Body,
|
|
param: Value,
|
|
_info: &ApiMethod,
|
|
rpcenv: Box<dyn RpcEnvironment>,
|
|
) -> ApiResponseFuture {
|
|
|
|
async move {
|
|
let env: &BackupEnvironment = rpcenv.as_ref();
|
|
|
|
let archive_name = tools::required_string_param(¶m, "archive-name")?.to_owned();
|
|
|
|
if !archive_name.ends_with(".didx") {
|
|
bail!("wrong archive extension: '{}'", archive_name);
|
|
}
|
|
|
|
let empty_response = {
|
|
Response::builder()
|
|
.status(StatusCode::OK)
|
|
.body(Body::empty())?
|
|
};
|
|
|
|
let last_backup = match &env.last_backup {
|
|
Some(info) => info,
|
|
None => return Ok(empty_response),
|
|
};
|
|
|
|
let mut path = last_backup.backup_dir.relative_path();
|
|
path.push(&archive_name);
|
|
|
|
let index = match env.datastore.open_dynamic_reader(path) {
|
|
Ok(index) => index,
|
|
Err(_) => {
|
|
env.log(format!("there is no last backup for archive '{}'", archive_name));
|
|
return Ok(empty_response);
|
|
}
|
|
};
|
|
|
|
env.log(format!("download last backup index for archive '{}'", archive_name));
|
|
|
|
let count = index.index_count();
|
|
for pos in 0..count {
|
|
let (start, end, digest) = index.chunk_info(pos)?;
|
|
let size = (end - start) as u32;
|
|
env.register_chunk(digest, size)?;
|
|
}
|
|
|
|
let reader = DigestListEncoder::new(Box::new(index));
|
|
|
|
let stream = WrappedReaderStream::new(reader);
|
|
|
|
// fixme: set size, content type?
|
|
let response = http::Response::builder()
|
|
.status(200)
|
|
.body(Body::wrap_stream(stream))?;
|
|
|
|
Ok(response)
|
|
}.boxed()
|
|
}
|
|
|
|
#[sortable]
|
|
pub const API_METHOD_FIXED_CHUNK_INDEX: ApiMethod = ApiMethod::new(
|
|
&ApiHandler::AsyncHttp(&fixed_chunk_index),
|
|
&ObjectSchema::new(
|
|
r###"
|
|
Download the fixed chunk index from the previous backup.
|
|
Simply returns an empty list if this is the first backup.
|
|
"### ,
|
|
&sorted!([
|
|
("archive-name", false, &crate::api2::types::BACKUP_ARCHIVE_NAME_SCHEMA)
|
|
]),
|
|
)
|
|
);
|
|
|
|
fn fixed_chunk_index(
|
|
_parts: Parts,
|
|
_req_body: Body,
|
|
param: Value,
|
|
_info: &ApiMethod,
|
|
rpcenv: Box<dyn RpcEnvironment>,
|
|
) -> ApiResponseFuture {
|
|
|
|
async move {
|
|
let env: &BackupEnvironment = rpcenv.as_ref();
|
|
|
|
let archive_name = tools::required_string_param(¶m, "archive-name")?.to_owned();
|
|
|
|
if !archive_name.ends_with(".fidx") {
|
|
bail!("wrong archive extension: '{}'", archive_name);
|
|
}
|
|
|
|
let empty_response = {
|
|
Response::builder()
|
|
.status(StatusCode::OK)
|
|
.body(Body::empty())?
|
|
};
|
|
|
|
let last_backup = match &env.last_backup {
|
|
Some(info) => info,
|
|
None => return Ok(empty_response),
|
|
};
|
|
|
|
let mut path = last_backup.backup_dir.relative_path();
|
|
path.push(&archive_name);
|
|
|
|
let index = match env.datastore.open_fixed_reader(path) {
|
|
Ok(index) => index,
|
|
Err(_) => {
|
|
env.log(format!("there is no last backup for archive '{}'", archive_name));
|
|
return Ok(empty_response);
|
|
}
|
|
};
|
|
|
|
env.log(format!("download last backup index for archive '{}'", archive_name));
|
|
|
|
let count = index.index_count();
|
|
let image_size = index.index_bytes();
|
|
for pos in 0..count {
|
|
let digest = index.index_digest(pos).unwrap();
|
|
// Note: last chunk can be smaller
|
|
let start = (pos*index.chunk_size) as u64;
|
|
let mut end = start + index.chunk_size as u64;
|
|
if end > image_size { end = image_size; }
|
|
let size = (end - start) as u32;
|
|
env.register_chunk(*digest, size)?;
|
|
}
|
|
|
|
let reader = DigestListEncoder::new(Box::new(index));
|
|
|
|
let stream = WrappedReaderStream::new(reader);
|
|
|
|
// fixme: set size, content type?
|
|
let response = http::Response::builder()
|
|
.status(200)
|
|
.body(Body::wrap_stream(stream))?;
|
|
|
|
Ok(response)
|
|
}.boxed()
|
|
}
|