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monitor.lua
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local async = require 'async'
require('pl.text').format_operator()
local rc = require 'redis-async'
local rq = require 'redis-queue'
local common = require 'redis-queue.common'
local mrq = require 'redis-queue.mrqueue'
local c = async.repl.colorize
local fiber = async.fiber
local wait = fiber.wait
local host = arg[1] or 'localhost'
local port = 8080
-- connect to Redis:
local client
local queueClient
rc.connect({host=host, port=6379}, function(c)
client = c
rq(client, function(newqueue)
queueClient = newqueue
print ("READY!")
end)
end)
local function gettimeago(ts)
local now = os.time()
local diff = now - (ts or 0)
if diff < 60 then
return diff .. " seconds ago"
elseif diff < 60 * 60 then
return math.floor(diff / 60) .. " minute(s) ago"
elseif diff < 24 * 60 * 60 then
return math.floor(diff / (60 * 60)) .. " hour(s) ago"
else
return math.floor(diff / (24 * 60 * 60)) .. " day(s) ago"
end
end
local function url_encode(str)
if (str) then
str = string.gsub (str, "\n", "\r\n")
str = string.gsub (str, "([^%w %-%_%.%~])",
function (c) return string.format ("%%%02X", string.byte(c)) end)
str = string.gsub (str, " ", "+")
end
return str
end
local function url_decode(str)
str = string.gsub (str, "+", " ")
str = string.gsub (str, "%%(%x%x)",
function(h) return string.char(tonumber(h,16)) end)
str = string.gsub (str, "\r\n", "\n")
return str
end
--<meta http-equiv="refresh" content="1">
local header = [[
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<style type="text/css">
html,body {font-family: Helvetica;}
h1 {color:#22a;}
h2 {color:#22e;}
table {
font-family: verdana,arial,sans-serif;
font-size:11px;
color:#333333;
border-width: 1px;
border-color: #666666;
border-collapse: collapse;
}
table th {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #666666;
background-color: #dedede;
}
table td {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #666666;
background-color: #ffffff;
}
</style>
</head>
]]
local mainPage = function(req, res)
-- collect data:
local qconfig = queueClient.config.configtbl or {}
local queues = {}
local lbqueues = {}
local delqueues = {}
local mrqueues = {}
-- identify keys
for queue,qType in pairs(qconfig) do
if qType == "LBQUEUE" then
table.insert(lbqueues, queue)
elseif qType == "DELQUEUE" then
table.insert(delqueues, queue)
elseif qType == "MRQUEUE" then
table.insert(mrqueues, queue)
else
table.insert(queues, queue)
end
end
-- format table:
local qrows = {}
local lbqrows = {}
local delqrows = {}
local mrqrows = {}
for i,key in ipairs(queues) do
local vals = wait({client.llen, client.hlen}, {{"QUEUE:" .. key},{"UNIQUE:"..key}})
local row = [[
<tr>
<td> ${name} </td>
<td> ${queue} </td>
<td> ${hashes} </td>
<td><a href="${showurl}">Show</a></td>
<td><a href="${clearurl}" onclick="return confirm('Are you sure?')">Clear Queue</a></td>
</tr>
]] % {
name = key,
queue = vals[1][1] or 0,
hashes = vals[2][1] or 0,
showurl = "/showq?queue="..key,
clearurl = "/clear?queue="..key,
}
table.insert(qrows, row)
end
qrows = table.concat(qrows)
for i,key in ipairs(lbqueues) do
local vals = wait({client.zcard, client.hlen, client.hlen, client.scard}, {{"LBQUEUE:" .. key},{"LBJOBS:" .. key},{"LBBUSY:" .. key},{"LBWAITING:" .. key}})
local row = [[
<tr>
<td> ${name} </td>
<td> ${queue} </td>
<td> ${jobs} </td>
<td> ${busy} </td>
<td> ${waiting} </td>
<td><a href="${showurl}">Show</a></td>
<td><a href="${clearurl}" onclick="return confirm('Are you sure?')">Clear</a></td>
</tr>
]] % {
name = key,
queue = vals[1][1] or 0,
jobs = vals[2][1] or 0,
busy = vals[3][1] or 0,
waiting = vals[4][1] or 0,
showurl = "/showlbq?queue="..key,
clearurl = "/clear?queue="..key.."&type=LB",
}
table.insert(lbqrows, row)
end
lbqrows = table.concat(lbqrows)
for i,key in ipairs(delqueues) do
local vals = wait({client.zcard, client.hlen}, {{"DELQUEUE:" .. key},{"DELJOBS:" .. key}})
local row = [[
<tr>
<td> ${name} </td>
<td> ${queue} </td>
<td> ${jobs} </td>
<td><a href="${showurl}">Show</a></td>
<td><a href="${clearurl}" onclick="return confirm('Are you sure?')">Clear Queue</a></td>
</tr>
]] % {
name = key,
queue = vals[1][1] or 0,
jobs = vals[2][1] or 0,
showurl = "/showdelq?queue="..key,
clearurl = "/clear?queue="..key.."&type=DEL"
}
table.insert(delqrows, row)
end
delqrows = table.concat(delqrows)
for i,key in ipairs(mrqueues) do
local row = [[
<tr>
<td> ${name} </td>
<td><a href="${showurl}">Show</a></td>
</tr>
]] % {
name = key,
showurl = "/mrqueue?queue="..key,
}
table.insert(mrqrows, row)
end
mrqrows = table.concat(mrqrows)
local workerinfo = wait({client.hgetall, client.hgetall}, {{common.RUNNING},{common.RUNNINGSINCE}})
local wrows = {}
local runningworkers = {}
local runningtimes = {}
local allworkers = {}
local workerlist = {}
for i=1,#workerinfo[1][1],2 do
local workername = workerinfo[1][1][i]
local jobJson = workerinfo[1][1][i+1]
local x,y,jobqueue = jobJson:find('("queue":".-")')
local x,y,jobhash = jobJson:find('("hash":".-")')
local x,y,jobname = jobJson:find('("name":".-")')
runningworkers[workername] = jobqueue .. ", " .. jobname .. ", " .. (jobhash or "nohash")
if not allworkers[workername] then
table.insert(workerlist, workername)
end
allworkers[workername] = true
end
for i=1,#workerinfo[2][1],2 do
local workername = workerinfo[2][1][i]
local jobtime = workerinfo[2][1][i+1]
runningtimes[workername] = jobtime
if not allworkers[workername] then
table.insert(workerlist, workername)
end
allworkers[workername] = true
end
table.sort(workerlist)
for _,worker in ipairs(workerlist) do
local row = [[
<tr>
<td> ${name} </td>
<td> ${lasttime} </td>
<td> ${lastjob} </td>
</tr>
]] % {
name = worker,
lasttime = gettimeago(runningtimes[worker]),
lastjob = runningworkers[worker] or "Waiting for job",
}
table.insert(wrows, row)
end
wrows = table.concat(wrows)
local failedTimes = wait(client.zrange, {common.FAILEDTIME, 0, 19, "WITHSCORES"})
local failedHashes = {}
local failedJobs = {}
local failureReasons = {}
local failureTimes = {}
for i=1,#failedTimes,2 do
table.insert(failedHashes, failedTimes[i])
failureTimes[failedTimes[i]] = 0 - failedTimes[i + 1]
end
local failures = wait({client.hmget, client.hmget},
{{common.FAILED, unpack(failedHashes)},{common.FAILED_ERROR, unpack(failedHashes)}})
for i=1,#failures[1][1] do
local jobHash = failedHashes[i]
local jobJson = failures[1][1][i]
failedJobs[jobHash] = jobJson
end
for i=1,#failures[2][1] do
local jobHash = failedHashes[i]
local jobError = failures[2][1][i]
failureReasons[jobHash] = jobError
end
local frows = {}
for k,v in pairs(failedJobs) do
local row = [[
<tr>
<td> ${time} </td>
<td> ${name} </td>
<td> ${err} </td>
<td><a href="${showurl}">Show</a></td>
<td><a href="${retryurl}" onclick="return confirm('Are you sure?')">Retry</a></td>
<td><a href="${clearurl}" onclick="return confirm('Are you sure?')">Clear</a></td>
</tr>
]] % {
time = gettimeago(failureTimes[k]),
name = k,
err = tostring(stringx.shorten(failureReasons[k], 100, false)),
retryurl = "/retryjob?id=" .. url_encode(k),
showurl = "/showjob?id=" .. url_encode(k),
clearurl = "/clearjob?id=" .. url_encode(k),
}
table.insert(frows, row)
end
frows = table.concat(frows)
-- full page:
local page = [[
<html>
${header}
<body>
<h1>Redis Queue</h1>
<table>
<tr>
<th>Standard Queues</th>
<th>Jobs Waiting</th>
<th>Unique</th>
</tr>
${quevals}
</table>
<table>
<tr>
<th>Map Reduce Queues</th>
</tr>
${mrquevals}
</table>
<table>
<tr> <th>Load Balanced Queues</th>
<th>Jobs Queued</th>
<th>Jobs Known</th>
<th>Jobs Busy</th>
<th>Jobs Waiting</th>
</tr>
${lbquevals}
</table>
<table>
<tr> <th>Delayed Queues</th>
<th>Jobs Queued</th>
<th>Jobs Known</th>
</tr>
${delquevals}
</table>
<table>
<tr> <th>Busy Workers</th><th>Last Seen</th><th>Current Job</th> </tr>
${workervals}
</table>
<a href="/clearfailed">Clear Failed Jobs </a>
<table>
<tr><th>Time</th><th>Failed</th><th>Reason</th><th>Show</th><th>Retry</th><th>Clear</th> </tr>
${failedvals}
</table>
</body>
</html>
]] % {header = header, quevals = qrows, lbquevals = lbqrows, delquevals = delqrows, mrquevals = mrqrows, workervals = wrows, failedvals = frows}
-- html response:
res(page, {['Content-Type']='text/html'})
end
local clearfailed = function(res)
client.del(common.FAILED)
client.del(common.FAILED_ERROR)
client.del(common.FAILEDTIME)
res("failed jobs cleared", {['Content-Type']='text/html'})
end
local clearQueue = function(req,res)
local x,y,queue= req.url.query:find("queue=(%a+)")
local z,w,qtype= req.url.query:find("type=(%a+)")
if qtype == "LB" then
client.del("LBQUEUE:"..queue)
client.del("LBJOBS:"..queue)
client.del("LBBUSY:"..queue)
client.del("LBWAITING:"..queue)
elseif qtype == "DEL" then
client.del("DELQUEUE:"..queue)
client.del("DELJOBS:"..queue)
else
client.del("QUEUE:"..queue)
client.del("UNIQUE:"..queue)
end
res("OK "..queue.." cleared", {['Content-Type']='text/html'})
end
local showJob = function(req, res)
local _,_,jobname = req.url.query:find("id=(.*)")
jobname = url_decode(jobname)
local vals = wait({client.hget, client.hget}, {{common.FAILED, jobname},{common.FAILED_ERROR, jobname}})
local page = [[
<html>
${header}
<body>
<h1>Redis Queue</h1>
<table>
<tr>
<th>${name}</th>
</tr>
<tr>
<td>${args}</td>
</tr>
<tr>
<td>${reason}</td>
</tr>
</table>
<p>
<a href="${retryurl}">retry</a>
</p>
<p>
<a href="${clearurl}">clear</a>
</p>
</body>
</html>
]] % {header = header, name = jobname, args = vals[1][1], reason = vals[2][1], retryurl = "/retryjob?id=" .. url_encode(jobname), clearurl = "/clearjob?id=" .. url_encode(jobname)}
-- html response:
res(page, {['Content-Type']='text/html'})
end
local showQ = function(req, res)
local _,_,queue= req.url.query:find("queue=(.*)")
local vals = wait({client.lrange, client.hkeys}, {{"QUEUE:" .. queue, 0, -1},{"UNIQUE:"..queue}})
local queuedjobs = vals[1][1]
local uniquejobs = vals[2][1]
local jobrows = {}
for _,job in ipairs(queuedjobs) do
local row = [[
<tr>
<td> ${job} </td>
</tr>
]] % {
job = job,
}
table.insert(jobrows, row)
end
jobrows = table.concat(jobrows)
local uniquejobrows = {}
for _,jobhash in ipairs(uniquejobrows) do
local row = [[
<tr>
<td> ${jobhash} </td>
</tr>
]] % {
jobhash = jobhash
}
table.insert(uniquejobrows, row)
end
uniquejobrows = table.concat(uniquejobrows)
-- full page:
local page = [[
<html>
${header}
<body>
<table>
<tr> <th>Jobs in the Queue</th></tr>
<tr> <th>Job</th> </tr>
${jobrows}
</table>
<table>
<tr> <th>Unique Jobs</th></tr>
<tr><th>Identifier</th> </tr>
${uniquejobrows}
</table>
</body>
</html>
]] % {header = header, jobrows = jobrows, uniquejobrows = uniquejobrows}
-- html response:
res(page, {['Content-Type']='text/html'})
end
local showLBQ = function(req, res)
local _,_,queue= req.url.query:find("queue=(.*)")
local vals = wait({client.zrange, client.hgetall, client.hgetall, client.smembers}, {{"LBQUEUE:" .. queue, 0, -1, "WITHSCORES"},{"LBJOBS:" .. queue},{"LBBUSY:" .. queue},{"LBWAITING:" .. queue}})
local queuedJobs = vals[1][1]
local knownJobs = vals[2][1]
local busyJobs = vals[3][1]
local waitingJobs = vals[4][1]
local jobrows = {}
for i = 1,#queuedJobs,2 do
local row = [[
<tr>
<td> ${score} </td>
<td> ${job} </td>
</tr>
]] % {
score = queuedJobs[i+1],
job = queuedJobs[i],
}
table.insert(jobrows, row)
end
jobrows = table.concat(jobrows)
local knownjobrows = {}
for i = 1,#knownJobs,2 do
local row = [[
<tr>
<td> ${hashname} </td>
<td> ${job} </td>
</tr>
]] % {
hashname = knownJobs[i],
job = knownJobs[i+1],
}
table.insert(knownjobrows, row)
end
knownjobrows = table.concat(knownjobrows)
local busyjobrows = {}
for i = 1,#busyJobs,2 do
local row = [[
<tr>
<td> ${job} </td>
<td><a href="${clearbusyurl}" onclick="return confirm('Are you sure?')">Clear</a></td>
</tr>
]] % {
job = busyJobs[i],
clearbusyurl = "/clearbusy?queue=" .. queue .. "&job=" .. busyJobs[i]
}
table.insert(busyjobrows, row)
end
busyjobrows = table.concat(busyjobrows)
local waitingjobcounts = {}
for _,job in ipairs(waitingJobs) do
local x,y,jobhash = job:find('"hash":"(.-)"')
waitingjobcounts[jobhash] = (waitingjobcounts[jobhash] or 0 ) + 1
end
local waitingjobrows = {}
for jobhash,jobcount in pairs(waitingjobcounts) do
local row = [[
<tr>
<td> ${jobhash} </td>
<td> ${jobcount} </td>
</tr>
]] % {
jobhash = jobhash,
jobcount = jobcount,
}
table.insert(waitingjobrows, row)
end
waitingjobrows = table.concat(waitingjobrows)
-- full page:
local page = [[
<html>
${header}
<body>
<table>
<tr> <th>Jobs in the Queue</th></tr>
<tr> <th>Score</th>
<th>Job</th>
</tr>
${jobrows}
</table>
<table>
<tr> <th>Known Jobs</th></tr>
<tr><th>Identifier</th>
<th>Job</th>
</tr>
${knownjobrows}
</table>
<table>
<tr> <th>Busy Jobs</th></tr>
<tr><th>Job</th>
</tr>
${busyjobrows}
</table>
<table>
<tr> <th>Waiting Jobs</th></tr>
<tr><th>Identifier</th>
<th>Count</th>
</tr>
${waitingjobrows}
</table>
</body>
</html>
]] % {header = header, jobrows = jobrows, knownjobrows = knownjobrows, busyjobrows = busyjobrows, waitingjobrows = waitingjobrows}
-- html response:
res(page, {['Content-Type']='text/html'})
end
local showDELQ = function(req, res)
local _,_,queue= req.url.query:find("queue=(.*)")
local vals = wait({client.zrange, client.hgetall}, {{"DELQUEUE:" .. queue, 0, -1, "WITHSCORES"},{"DELJOBS:" .. queue}})
local queuedJobs = vals[1][1]
local knownJobs = vals[2][1]
local jobrows = {}
for i = 1,#queuedJobs,2 do
local row = [[
<tr>
<td> ${score} </td>
<td> ${job} </td>
</tr>
]] % {
score = tostring(Date(tonumber(queuedJobs[i+1]))),
job = queuedJobs[i],
}
table.insert(jobrows, row)
end
jobrows = table.concat(jobrows)
local knownjobrows = {}
for i = 1,#knownJobs,2 do
local row = [[
<tr>
<td> ${hashname} </td>
<td> ${job} </td>
</tr>
]] % {
hashname = knownJobs[i],
job = knownJobs[i+1],
}
table.insert(knownjobrows, row)
end
knownjobrows = table.concat(knownjobrows)
-- full page:
local page = [[
<html>
${header}
<body>
<table>
<tr> <th>Jobs in the Queue</th></tr>
<tr> <th>Scheduled</th>
<th>Job</th>
</tr>
${jobrows}
</table>
<table>
<tr> <th>Known Jobs</th></tr>
<tr><th>Identifier</th>
<th>Job</th>
</tr>
${knownjobrows}
</table>
</body>
</html>
]] % {header = header, jobrows = jobrows, knownjobrows = knownjobrows}
-- html response:
res(page, {['Content-Type']='text/html'})
end
local retryJob = function(req,res)
local _,_,jobname = req.url.query:find("id=(.*)")
jobname = url_decode(jobname)
local args = wait(client.hget, {common.FAILED, jobname})
queueClient:reenqueue(jobname, args)
res("OK ".. jobname .." requeued", {['Content-Type']='text/html'})
end
local clearFailedJob = function(req,res)
local _,_,jobname = req.url.query:find("id=(.*)")
jobname = url_decode(jobname)
local args = wait(client.hget, {common.FAILED, jobname})
wait({client.hdel, client.hdel, client.zrem}, {{common.FAILED, jobname},{common.FAILED_ERROR, jobname}, {common.FAILEDTIME, jobname}})
res("OK ".. jobname .." cleared", {['Content-Type']='text/html'})
end
local clearBusy = function(req,res)
local _,_,queue= req.url.query:find("queue=(%w+)")
local _,_,jobname = req.url.query:find("job=(.*)")
jobname = url_decode(jobname)
-- not good form to have this logic here, but it's a specific problem we're solving for now
-- eventually, queue's web representation will be modularized
print(queue, jobname)
client.hdel("LBBUSY:" .. queue, jobname)
res("OK ".. jobname .." cleared", {['Content-Type']='text/html'})
end
local showMRQ = function(req,res)
local _,_,queue= req.url.query:find("queue=(%w+)")
local mrtable = mrq.show(client, queue)
-- full page:
local page = [[
<html>
${header}
<body>
${mrtable}
</body>
</html>
]] % {header = header, mrtable = mrtable}
-- html response:
res(page, {['Content-Type']='text/html'})
end
-- listen up:
async.http.listen('http://0.0.0.0:'..port, function(req,res)
fiber(function()
-- log:
print(c.blue(req.method) .. ' @ ' .. c.red(req.url.path))
-- resp for /
if req.url.path == '/' then
mainPage(req,res)
elseif req.url.path == "/clearfailed" then
clearfailed(res)
elseif req.url.path == "/clear" then
clearQueue(req,res)
elseif req.url.path == "/showjob" then
showJob(req,res)
elseif req.url.path == "/showq" then
showQ(req,res)
elseif req.url.path == "/showlbq" then
showLBQ(req,res)
elseif req.url.path == "/showdelq" then
showDELQ(req,res)
elseif req.url.path == "/retryjob" then
retryJob(req,res)
elseif req.url.path == "/clearjob" then
clearFailedJob(req,res)
elseif req.url.path == "/clearbusy" then
clearBusy(req,res)
elseif req.url.path == "/die" then
os.exit()
elseif req.url.path == "/mrqueue" then
showMRQ(req,res)
end
end)
end)
-- Start event loop
print('http monitor listening on port: ' .. c.blue(port))
async.go()