This commit is contained in:
Axel Kittenberger 2010-10-22 12:58:57 +00:00
parent 73f48f0aff
commit e23328f737
2 changed files with 70 additions and 61 deletions

View File

@ -517,7 +517,7 @@ l_terminate(lua_State *L)
}
/**
* Waits after startup for a table of child processes.
* Suspends execution until a table of child processes returned.
*
* @param (Lua stack) a table of the children pids.
* @param (Lua stack) a function of a collector to be called

View File

@ -22,12 +22,21 @@ lsyncd_version = "2.0b1"
----
-- Shortcuts (which user is supposed to be able to use them as well)
--
log = lsyncd.log
exec = lsyncd.exec
----
-- Table of all directories to watch,
-- filled and used only during initialization.
-- Table of all root directories to sync,
-- filled during initialization.
--
-- [#] {
-- actions = actions,
-- source = source_dir,
-- targetident = target_identifier,
-- target = link to target directory
-- }
--
origins = {}
----
@ -41,11 +50,12 @@ origins = {}
-- .delays = [#) { .. the delays stack
-- .atype .. enum, kind of action
-- .wd .. watch descriptor id this origins from TODO needed?
-- .attend .. link to atttender that raised this.
-- .filename .. filename or nil, means dir itself
-- .attend .. link to atttender that raised this delay.
-- .filename .. filename or nil (=dir itself)
-- (.movepeer) .. for MOVEFROM/MOVETO link to other delay
-- }
-- }
--
targets = {}
-----
@ -53,14 +63,13 @@ targets = {}
--
-- structure:
-- [wd] = {
-- .wd .. the watch descriptor (TODO needed?)
-- .targets = [#] {
-- .odir .. origin source dir
-- .path .. path of dir
-- .target .. link to targets[#]
-- .parent .. link to parent directory in watches
-- or nil for origin
-- }
-- .wd .. the watch descriptor (TODO needed?)
-- .syncs = [#] { list of stuff to sync to
-- .origin .. link to origin
-- .path .. relative path of dir
-- .parent .. link to parent directory in watches
-- or nil for origin
-- }
-- }
--
watches = {}
@ -83,41 +92,38 @@ end
----
-- Adds watches for a directory including all subdirectories.
--
-- @param odir origin dir
-- @param path path in this dir
-- @param target link to target in [targets]
-- @param origin link to origins[] entry
-- @param path relative path of this dir to origin
-- @param parent link to parent directory in watches[]
-- @param actions TODO
--
local function attend_dir(odir, path, target, parent, actions)
-- actual dir = origin + path
local op = odir .. path
local function attend_dir(origin, path, parent)
local op = origin.source .. path
-- register watch and receive watch descriptor
local wd = lsyncd.add_watch(op);
if wd < 0 then
-- failed adding the watch
log(ERROR, "Failure adding watch " .. op .." -> ignored ")
-- TODO die?
log(ERROR, "Failure adding watch "..op.." -> ignored ")
return
end
local thiswatch = watches[wd]
if thiswatch == nil then
-- new watch
thiswatch = {wd = wd, attends = {} }
thiswatch = {wd = wd, syncs = {} }
watches[wd] = thiswatch
end
table.insert(thiswatch.attends, { odir = odir, path = path, target = target, parent = parent, actions = actions })
local sync = { origin = origin, path = path, parent = parent }
table.insert(thiswatch.syncs, sync)
-- warmstart?
if origin.actions.startup == nil then
delay_action(CREATE, target, nil, wd, origin, path)
end
-- register all subdirectories
local subdirs = lsyncd.sub_dirs(op);
for i, dirname in ipairs(subdirs) do
attend_dir(odir, path .. dirname .. "/", target, thiswatch, actions)
end
-- TODO
if actions ~= nil then
delay_action(CREATE, target, nil, nil, wd, odir, path)
attend_dir(origin, path..dirname.."/", thiswatch)
end
end
@ -131,35 +137,44 @@ function lsyncd_initialize()
lsyncd.terminate(-1) -- ERRNO
end
-- set to true if at least one origin has a startup function
local have_startup = false
-- runs through the origins table filled by user calling directory()
for i, o in ipairs(origins) do
for i, origin in ipairs(origins) do
-- resolves source to be an absolute path
local asrc = lsyncd.real_dir(o.source)
local asrc = lsyncd.real_dir(origin.source)
if asrc == nil then
print("Cannot resolve source path: ", o.source)
print("Cannot resolve source path: ", origin.source)
lsyncd.terminate(-1) -- ERRNO
end
origin.source = asrc
-- appends the target on target lists
local target = { ident = o.targetident, delays = {} }
local target = { ident = origin.targetident, delays = {} }
table.insert(targets, target)
o.target = target -- TODO needed?
-- and add the dir watch inclusively all subdirs
attend_dir(asrc, "", target, nil)
end
log(NORMAL, "--- startup ---")
local pids = { }
local pid
for i, o in ipairs(origins) do
if (o.actions.startup ~= nil) then
pid = o.actions.startup(o.source, o.targetident)
origin.target = target
if origin.actions.startup ~= nil then
have_startup = true
end
table.insert(pids, pid)
-- and add the dir watch inclusively all subdirs
attend_dir(origin, "", nil)
end
if have_startup then
log(NORMAL, "--- startup ---")
local pids = { }
for i, origin in ipairs(origins) do
local pid
if origin.actions.startup ~= nil then
local pid = origin.actions.startup(origin.source, origin.targetident)
table.insert(pids, pid)
end
end
lsyncd.wait_pids(pids, "startup_collector")
log(NORMAL, "--- Entering normal operation with "..#watches.." monitored directories ---")
else
log(NORMAL, "--- Warmstart into normal operation with "..#watches.." monitored directories ---")
end
lsyncd.wait_pids(pids, "startup_collector")
log(NORMAL, "--- Entering normal operation with " .. #watches .. " monitored directories ---")
end
----
@ -204,9 +219,9 @@ function lsyncd_event(etype, wd, isdir, filename, filename2)
end
-- TODO comment out to safe performance
if filename2 == nil then
log(DEBUG, "got event " .. event_names[etype] .. " of " .. ftype .. " " .. filename)
log(DEBUG, "got event "..event_names[etype].." of "..ftype.." "..filename)
else
log(DEBUG, "got event " .. event_names[etype] .. " of " .. ftype .. " " .. filename .. " to " .. filename2)
log(DEBUG, "got event "..event_names[etype].." of "..ftype.." "..filename.." to "..filename2)
end
-- looks up the watch descriptor id
@ -217,15 +232,11 @@ function lsyncd_event(etype, wd, isdir, filename, filename2)
end
-- works through all possible source->target pairs
for i, a in ipairs(w.attends) do
log(DEBUG, "odir = " .. a.odir .. " path = " .. a.path)
if (isdir) then
if (etype == CREATE) then
attend_dir(a.odir, a.path .. filename .. "/", w, a.actions)
end
for i, sync in ipairs(w.syncs) do
if isdir and eypte == CREATE then
attend_dir(sync.origin, sync.path..filename.."/", w)
end
end
end
-----
@ -258,10 +269,10 @@ end
-- @param TODO
--
function sync(source_dir, target_identifier, actions)
local o = { actions = actions,
source = source_dir,
targetident = target_identifier,
}
local o = { actions = actions,
source = source_dir,
targetident = target_identifier,
}
table.insert(origins, o)
return
end
@ -275,5 +286,3 @@ function default_overflow()
end
overflow = default_overflow