/usr/share/monotone/hooks/monotone-cluster-push.lua is in monotone-extras 1.1-4+deb8u2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
--
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-------------------------------------------------------------------------------
-- Usage:
--
-- NOTE: THIS SOFTWARE IS ONLY MEANT FOR SERVER PROCESSES!
-- Anything else will fail miserably!
--
-- in your server's monotonerc, add the following include:
--
-- include("/PATH/TO/monotone-cluster-push.lua")
--
-- You may want to set up the following variables:
--
-- MCP_rcfile
-- The absolute path to the configuration file used
-- by this script.
-- Default: {confdir}/cluster-push.rc
--
-- The configuration file must contain basic-io stanzas with the
-- following keys:
--
-- pattern Branch pattern, as in read-permissions. It MUST
-- come first in each stanza.
-- server Server address or address:port to which this
-- pattern should be pushed. There may be many of
-- these in each stanza.
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-- Local hack of the note_netsync_* functions
-------------------------------------------------------------------------------
do
-- initialise rcfile with a default, or use MCP_rcfile if it's set
local rcfile = get_confdir() .. "/cluster-push.rc"
if MCP_rcfile then rcfile = MCP_rcfile end
local debug = false
if MCP_debug then debug = true end
local verbose_startup = false
if MCP_verbose_startup then verbose_startup = true end
local branches = {}
-- returns false if the rcfile wasn't parseable, otherwise a table of
-- patterns with the servers they each should be pushed to.
local process_rcfile =
function (_hook_name, _rcfile)
if debug then
io.stderr:write(_hook_name, ": reading ", _rcfile,
"\n")
end
local rcfile = io.open(_rcfile, "r")
if (rcfile == nil) then
io.stderr:write("file ", _rcfile, " cannot be opened\n")
return nil
end
local dat = rcfile:read("*a")
io.close(rcfile)
if debug then
io.stderr:write(_hook_name, ": got this:\n", dat, "\n")
end
local res = parse_basic_io(dat)
if res == nil then
io.stderr:write("file ", _rcfile, " cannot be parsed\n")
return nil
end
local pattern_servers = {}
local patterns = {}
local previous_name = ""
for i, item in pairs(res) do
if item.name == "pattern" then
if debug then
io.stderr:write(_hook_name, ": found ",
item.name, " = \"", item.values[1],
"\"\n")
end
if previous_name ~= "pattern" then
if debug then
io.stderr:write(_hook_name, ": clearing patterns because previous_name = \"", previous_name, "\"\n")
end
patterns = {}
end
patterns[item.values[1]] = true
elseif item.name == "server" then
if debug then
io.stderr:write(_hook_name, ": found ", item.name, " = \"",
item.values[1], "\"\n")
end
local server = item.values[1]
for pattern, b in pairs(patterns) do
if b then
if not pattern_servers[pattern] then
pattern_servers[pattern] = {}
end
table.insert(pattern_servers[pattern], server)
end
end
end
previous_name = item.name
end
return pattern_servers
end
local notifier = {
startup =
function(...)
local pattern_branches =
process_rcfile("monotone-cluster-push: startup", rcfile)
if pattern_branches then
for pattern, servers in pairs(pattern_branches) do
for _,server in pairs(servers) do
if not verbose_startup then
io.stderr:write("monotone-cluster-push: startup: ",
"pushing pattern \"", pattern,
"\" to server ", server, "\n")
end
server_request_sync("push",
"mtn://"..server.."?"..pattern,
"", "")
end
end
end
return "continue",nil
end,
start =
function (nonce, ...)
if debug then
io.stderr:write("monotone-cluster-push: start: ",
"initialise branches\n")
end
branches[nonce] = {}
return "continue",nil
end,
cert_received =
function (rev_id, key, name, value, nonce, ...)
if debug then
io.stderr:write("note_netsync_cert_received: cert ", name,
" with value ", value, " received\n")
end
if name == "branch" then
if debug then
io.stderr:write("monotone-cluster-push: cert_received: ",
"branch ", value, " identified\n")
end
branches[nonce][value] = true
end
return "continue",nil
end,
revision_received =
function (new_id, revision, certs, nonce, ...)
for _, item in pairs(certs)
do
if debug then
io.stderr:write("monotone-cluster-push: revision_received: ",
"cert ", item.name, " with value ",
item.value, " received\n")
end
if item.name == "branch" then
if debug then
io.stderr:write("monotone-cluster-push: revision_received: ",
"branch ", item.value, " identified\n")
end
branches[nonce][item.value] = true
end
end
return "continue",nil
end,
["end"] =
function (nonce, status,
bytes_in, bytes_out,
certs_in, certs_out,
revs_in, revs_out,
keys_in, keys_out,
...)
if debug then
io.stderr:write("monotone-cluster-push: end: ",
string.format("%d certs, %d revs, %d keys",
certs_in, revs_in, keys_in),
"\n")
end
if certs_in > 0 or revs_in > 0 or keys_in > 0 then
local pattern_branches =
process_rcfile("monotone-cluster-push: end", rcfile, nil)
if pattern_branches then
for pattern, servers in pairs(pattern_branches) do
for branch, _ in pairs(branches[nonce]) do
if debug then
io.stderr:write("monotone-cluster-push: end: ",
"trying pattern ", pattern,
" with branch ", branch, "\n")
end
if globish.match(pattern, branch) then
if debug then
io.stderr:write("monotone-cluster-push: end: ",
"it matches\n")
end
for _,server in pairs(servers) do
io.stderr:write("monotone-cluster-push: end: ",
"pushing pattern \"", pattern,
"\" to server ", server, "\n")
server_request_sync("push",
"mtn://"..server.."?"..pattern,
"", "")
end
end
end
end
end
end
return "continue",nil
end
}
push_netsync_notifier(notifier)
end
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