76185e3a2a
It was found that a one second timeout for nodeinfo data may be too low, so that when a node is otherwise occupied that timeout may be reached too often. The nodeinfo query response is also vital to the status-page base template, so that when it times out, the site will be turned in a broken state, that it cannot recover from. Fixes: #2256
87 lines
1.9 KiB
Lua
87 lines
1.9 KiB
Lua
local json = require 'jsonc'
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local site = require 'gluon.site'
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local util = require 'gluon.util'
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local function parse_ip(addr)
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if not addr then return end
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local ip4 = {addr:match('(%d+)%.(%d+)%.(%d+)%.(%d+)')}
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if ip4[1] then
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local ret = {}
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for i, part in ipairs(ip4) do
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ret[i] = tonumber(part)
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end
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return ret
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end
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if not addr:match('^[:%x]+$') then
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return
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end
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if addr:sub(0, 2) == '::' then
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addr = '0' .. addr
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end
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if addr:sub(-2) == '::' then
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addr = addr .. '0'
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end
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addr = addr .. ':'
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local groups, groups1 = {}, {}
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for part in addr:gmatch('([^:]*):') do
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if part == '' then
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groups1 = groups
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groups = {}
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else
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groups[#groups+1] = tonumber(part, 16)
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end
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end
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while #groups + #groups1 < 8 do
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groups1[#groups1+1] = 0
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end
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for _, group in ipairs(groups) do
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groups1[#groups1+1] = group
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end
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return groups1
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end
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local function match(a, b, n)
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if not a or not b then return false end
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for i = 1, n do
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if a[i] ~= b[i] then
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return false
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end
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end
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return true
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end
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entry({}, call(function(http, renderer)
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local nodeinfo = json.parse(util.exec('exec gluon-neighbour-info -d ::1 -p 1001 -t 3 -c 1 -r nodeinfo'))
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local node_ip = parse_ip(http:getenv('SERVER_ADDR'))
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if node_ip and (
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match(node_ip, parse_ip(site.next_node.ip4()), 8) or
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match(node_ip, parse_ip(site.next_node.ip6()), 8)
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) then
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-- The user has visited the status page via a next-node address
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-- Redirect the user to a unique address to avoid switching nodes
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local prefix = parse_ip(site.prefix6():match('^[^/]+'))
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for _, addr in ipairs(nodeinfo.network.addresses) do
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if match(prefix, parse_ip(addr), 4) then
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http:header('Cache-Control', 'no-cache, no-store, must-revalidate')
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http:redirect('http://[' .. addr .. ']' .. http:getenv('REQUEST_URI'))
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http:close()
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return
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end
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end
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end
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renderer.render('status-page', { nodeinfo = nodeinfo, site = site }, 'gluon-status-page')
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end))
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