type command =
| Exit_thread
| Connect of string option * domain list callback
+ | Disk_usage of source * string * int64 callback
+ | Download_dir_find0 of source * string * string * unit callback
+ | Download_dir_tarball of source * string * download_dir_tarball_format * string * unit callback
+ | Download_file of source * string * string * unit callback
| Open_domain of string * inspection_data callback
- | Open_images of string list * inspection_data callback
+ | Open_images of (string * string option) list * inspection_data callback
| Read_directory of source * string * direntry list callback
and domain = {
dent_link : string;
}
+and download_dir_tarball_format = Tar | TGZ | TXZ
+
let rec string_of_command = function
| Exit_thread -> "Exit_thread"
| Connect (Some name, _) -> sprintf "Connect %s" name
| Connect (None, _) -> "Connect NULL"
+ | Disk_usage (src, remotedir, _) ->
+ sprintf "Disk_usage (%s, %s)" (string_of_source src) remotedir
+ | Download_dir_find0 (src, remotedir, localfile, _) ->
+ sprintf "Download_dir_find0 (%s, %s, %s)"
+ (string_of_source src) remotedir localfile
+ | Download_dir_tarball (src, remotedir, format, localfile, _) ->
+ sprintf "Download_dir_tarball (%s, %s, %s, %s)"
+ (string_of_source src) remotedir
+ (string_of_download_dir_tarball_format format) localfile
+ | Download_file (src, remotefile, localfile, _) ->
+ sprintf "Download_file (%s, %s, %s)"
+ (string_of_source src) remotefile localfile
| Open_domain (name, _) -> sprintf "Open_domain %s" name
| Open_images (images, _) ->
- sprintf "Open_images [%s]" (String.concat "; " images)
- | Read_directory (OS { insp_root = root }, dir, _) ->
- sprintf "Read_directory (OS %s, %s)" root dir
- | Read_directory (Volume dev, dir, _) ->
- sprintf "Read_directory (Volume %s, %s)" dev dir
+ sprintf "Open_images %s" (string_of_images images)
+ | Read_directory (src, dir, _) ->
+ sprintf "Read_directory (%s, %s)" (string_of_source src) dir
+
+and string_of_images images =
+ "[" ^
+ String.concat "; "
+ (List.map (function
+ | fn, None -> fn
+ | fn, Some format -> sprintf "%s (%s)" fn format)
+ images) ^ "]"
+
+and string_of_source = function
+ | OS { insp_root = root } ->
+ sprintf "OS %s" root
+ | Volume dev ->
+ sprintf "Volume %s" dev
+
+and string_of_download_dir_tarball_format = function
+ | Tar -> "Tar"
+ | TGZ -> "TGZ"
+ | TXZ -> "TXZ"
let no_callback _ = ()
let failure_hook = ref (fun _ -> ())
let busy_hook = ref (fun _ -> ())
let idle_hook = ref (fun _ -> ())
+let status_hook = ref (fun _ -> ())
+let progress_hook = ref (fun _ -> ())
let set_failure_hook cb = failure_hook := cb
let set_busy_hook cb = busy_hook := cb
let set_idle_hook cb = idle_hook := cb
+let set_status_hook cb = status_hook := cb
+let set_progress_hook cb = progress_hook := cb
(* Execute a function, while holding a mutex. If the function
* fails, ensure we release the mutex before rethrowing the
let q_cond = Cond.create ()
(* Send a command message to the slave thread. *)
-let send_to_slave cmd =
+let send_to_slave ?fail cmd =
debug "sending message %s to slave thread ..." (string_of_command cmd);
with_lock q_lock (
fun () ->
- Q.push cmd q;
+ Q.push (fail, cmd) q;
Cond.signal q_cond
)
q_discard := true
)
-let connect uri cb = send_to_slave (Connect (uri, cb))
-let open_domain name cb = send_to_slave (Open_domain (name, cb))
-let open_images images cb = send_to_slave (Open_images (images, cb))
-let read_directory src path cb = send_to_slave (Read_directory (src, path, cb))
+let connect ?fail uri cb = send_to_slave ?fail (Connect (uri, cb))
+let disk_usage ?fail src remotedir cb =
+ send_to_slave ?fail (Disk_usage (src, remotedir, cb))
+let download_dir_find0 ?fail src remotedir localfile cb =
+ send_to_slave ?fail (Download_dir_find0 (src, remotedir, localfile, cb))
+let download_dir_tarball ?fail src remotedir format localfile cb =
+ send_to_slave ?fail
+ (Download_dir_tarball (src, remotedir, format, localfile, cb))
+let download_file ?fail src remotefile localfile cb =
+ send_to_slave ?fail (Download_file (src, remotefile, localfile, cb))
+let open_domain ?fail name cb = send_to_slave ?fail (Open_domain (name, cb))
+let open_images ?fail images cb = send_to_slave ?fail (Open_images (images, cb))
+let read_directory ?fail src path cb =
+ send_to_slave ?fail (Read_directory (src, path, cb))
(*----- Slave thread starts here -----*)
f ()
) ()
+(* Update the status bar. *)
+let status fs =
+ let f str = GtkThread.async !status_hook str in
+ ksprintf f fs
+
let rec loop () =
debug "top of slave loop";
(* Get the next command. *)
- let cmd =
+ let fail, cmd =
with_lock q_lock (
fun () ->
while Q.is_empty q do Cond.wait q_cond q_lock done;
GtkThread.async !busy_hook ();
execute_command cmd
with exn ->
- (* If a command or the callback fails, clear the command queue
- * and run the failure hook in the main thread.
+ (* If the user provided an override ?fail parameter to the
+ * original call, call that, else call the global hook.
*)
- discard_command_queue ();
- GtkThread.async !failure_hook exn
+ match fail with
+ | Some cb -> GtkThread.async cb exn
+ | None -> GtkThread.async !failure_hook exn
);
(* If there are no more commands in the queue, run the idle hook. *)
close_all ()
| Connect (name, cb) ->
+ let printable_name =
+ match name with None -> "default hypervisor" | Some uri -> uri in
+ status "Connecting to %s ..." printable_name;
+
close_all ();
conn := Some (C.connect_readonly ?name ());
) doms in
let cmp { dom_name = n1 } { dom_name = n2 } = compare n1 n2 in
let doms = List.sort ~cmp doms in
+
+ status "Connected to %s" printable_name;
callback_if_not_discarded cb doms
+ | Disk_usage (src, remotedir, cb) ->
+ status "Calculating disk usage of %s ..." remotedir;
+
+ let g = get_g () in
+ let r =
+ with_mount_ro g src (
+ fun () ->
+ g#du remotedir
+ ) in
+
+ status "Finished calculating disk usage of %s" remotedir;
+ callback_if_not_discarded cb r
+
+ | Download_dir_find0 (src, remotedir, localfile, cb) ->
+ status "Downloading %s filenames to %s ..." remotedir localfile;
+
+ let g = get_g () in
+ with_mount_ro g src (
+ fun () ->
+ g#find0 remotedir localfile
+ );
+
+ status "Finished downloading %s" localfile;
+ callback_if_not_discarded cb ()
+
+ | Download_dir_tarball (src, remotedir, format, localfile, cb) ->
+ status "Downloading %s to %s ..." remotedir localfile;
+
+ let g = get_g () in
+ let f = match format with
+ | Tar -> g#tar_out
+ | TGZ -> g#tgz_out
+ | TXZ -> g#txz_out
+ in
+ with_mount_ro g src (
+ fun () ->
+ f remotedir localfile
+ );
+
+ status "Finished downloading %s" localfile;
+ callback_if_not_discarded cb ()
+
+ | Download_file (src, remotefile, localfile, cb) ->
+ status "Downloading %s to %s ..." remotefile localfile;
+
+ let g = get_g () in
+ with_mount_ro g src (
+ fun () ->
+ g#download remotefile localfile
+ );
+
+ status "Finished downloading %s" localfile;
+ callback_if_not_discarded cb ()
+
| Open_domain (name, cb) ->
+ status "Opening %s ..." name;
+
let conn = get_conn () in
let dom = D.lookup_by_name conn name in
let xml = D.get_xml_desc dom in
open_disk_images images cb
| Open_images (images, cb) ->
+ status "Opening disk images ...";
+
open_disk_images images cb
| Read_directory (src, dir, cb) ->
+ status "Reading directory %s ..." dir;
+
let g = get_g () in
let names, stats, links =
with_mount_ro g src (
fun ((name, stat), link) ->
{ dent_name = name; dent_stat = stat; dent_link = link }
) entries in
+
+ status "Finished reading directory %s" dir;
callback_if_not_discarded cb entries
(* Expect to be connected, and return the current libvirt connection. *)
| _ :: rest -> source_of attr_name rest
in
+ (* Look for <driver type=attr_val/> and return attr_val. *)
+ let rec format_of = function
+ | [] -> None
+ | Xml.Element ("driver", attrs, _) :: rest ->
+ (try Some (List.assoc "type" attrs)
+ with Not_found -> format_of rest)
+ | _ :: rest -> format_of rest
+ in
+
(* Look for <disk> nodes and return the sources (block devices) of those. *)
let blkdevs =
List.filter_map (
function
- | Xml.Element ("disk", attrs, children) ->
- (try
- let typ = List.assoc "type" attrs in
- if typ = "file" then source_of "file" children
- else if typ = "block" then source_of "dev" children
- else None
- with
- Not_found -> None)
+ | Xml.Element ("disk", attrs, disks) ->
+ let filename =
+ try
+ let typ = List.assoc "type" attrs in
+ if typ = "file" then source_of "file" disks
+ else if typ = "block" then source_of "dev" disks
+ else None
+ with
+ Not_found -> None in
+ (match filename with
+ | None -> None
+ | Some filename ->
+ let format = format_of disks in
+ Some (filename, format)
+ );
| _ -> None
) devices in
blkdevs
* libguestfs handle, adds the disks, and launches the appliance.
*)
and open_disk_images images cb =
- debug "opening disk image [%s]" (String.concat "; " images);
+ debug "opening disk image %s" (string_of_images images);
close_g ();
let g' = new Guestfs.guestfs () in
g := Some g';
let g = g' in
+ g#set_trace (trace ());
+
(* Uncomment the next line to pass the verbose flag from the command
* line through to libguestfs. This is not generally necessary since
* we are not so interested in debugging libguestfs problems at this
*)
(* g#set_verbose (verbose ());*)
- List.iter g#add_drive_ro images;
+ (* Attach progress bar callback. *)
+ g#set_progress_callback (
+ fun proc_nr serial position total ->
+ debug "progress callback proc_nr=%d serial=%d posn=%Ld total=%Ld"
+ proc_nr serial position total;
+ GtkThread.async !progress_hook (position, total)
+ );
+
+ List.iter (
+ function
+ | filename, None ->
+ g#add_drive_opts ~readonly:true filename
+ | filename, Some format ->
+ g#add_drive_opts ~readonly:true ~format filename
+ ) images;
g#launch ();
+ status "Listing filesystems ...";
+
(* Get list of filesystems. *)
let fses = g#list_filesystems () in
+ status "Looking for operating systems ...";
+
(* Perform inspection. This can fail, ignore errors. *)
let roots =
try Array.to_list (g#inspect_os ())
insp_all_filesystems = fses;
insp_oses = oses;
} in
+
+ status "Finished opening disk";
callback_if_not_discarded cb data
(* guestfs_lstatlist has a "hidden" limit of the protocol message size.
git.annexia.org / guestfs-browser.git / blobdiff