author | Matthew Wild <mwild1@gmail.com> |
Wed, 24 Apr 2024 13:47:48 +0100 | |
changeset 5895 | 512f912fdfa5 |
parent 2769 | 85cf9a8b4020 |
permissions | -rw-r--r-- |
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
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|
1 |
local heartbeats = module:shared("/*/host_status_check/heartbeats"); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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2 |
local events = module:shared("/*/host_status_check/connection_events"); |
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mod_http_host_status_check: Emit log message when host status is not the same as last time we looked
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3 |
local host_status_ok = module:shared("host_status_ok"); |
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4 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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5 |
local time = require "socket".gettime; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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6 |
local template = require "util.interpolation".new("%b{}", function (s) return s end) |
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7 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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8 |
module:depends "http" |
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9 |
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2a7e9d9e7339
mod_http_host_status_check: Bump default timeout threshold to 10s (from 5s). Heartbeats default to every 5s.
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10 |
local threshold = module:get_option_number("status_check_heartbeat_threshold", 10); |
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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11 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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12 |
local function status_string(status, duration, comment) |
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mod_http_host_status_check: Fix some luacheck warnings
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13 |
local string_timestamp; |
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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14 |
if duration then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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15 |
string_timestamp = ("(%0.2fs%s)"):format(duration, comment or ""); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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16 |
elseif comment then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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17 |
string_timestamp = ("(%s)"):format(comment); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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18 |
else |
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19 |
return status and "UP" or "DOWN"; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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20 |
end |
5fcf9d558250
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21 |
return (status and "UP " or "DOWN ")..string_timestamp; |
5fcf9d558250
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22 |
end |
5fcf9d558250
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23 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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24 |
local function string_pad(s, len) |
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25 |
return s..(" "):rep(len-#s); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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26 |
end |
5fcf9d558250
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27 |
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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28 |
local status_page_template = [[ |
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29 |
STATUS {status} |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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30 |
{host_statuses%HOST {item} {idx} |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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31 |
}]]; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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32 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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33 |
function status_page() |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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34 |
local host_statuses = {}; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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35 |
local current_time = time(); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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36 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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37 |
local all_ok = true; |
2769
85cf9a8b4020
mod_http_host_status_check: Add list of failing hosts to the first line for summary
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38 |
local failed_hosts = {}; |
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39 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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40 |
for host in pairs(hosts) do |
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41 |
local last_heartbeat_time = heartbeats[host]; |
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42 |
|
2232
03a4c3209f21
mod_http_host_status_check: Fix some luacheck warnings
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parents:
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43 |
local ok, status_text = true; |
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parents:
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44 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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45 |
local is_component = hosts[host].type == "component" and hosts[host].modules.component; |
5fcf9d558250
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46 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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47 |
if is_component then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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48 |
local current_status = hosts[host].modules.component.connected; |
5fcf9d558250
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49 |
if events[host] then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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50 |
local tracked_status = events[host].connected; |
5fcf9d558250
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51 |
if tracked_status == current_status then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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52 |
status_text = status_string(current_status, time() - events[host].timestamp); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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53 |
else |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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54 |
status_text = status_string(current_status, nil, "!"); |
5fcf9d558250
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55 |
end |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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56 |
else |
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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57 |
status_text = status_string(current_status, nil, "?"); |
5fcf9d558250
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58 |
end |
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59 |
if not current_status then |
5fcf9d558250
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60 |
ok = false; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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61 |
end |
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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62 |
else |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
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63 |
local event_info = events[host]; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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64 |
local connected = true; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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65 |
if event_info then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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66 |
connected = event_info.connected; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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67 |
end |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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68 |
status_text = status_string(connected, event_info and (time() - events[host].timestamp), not event_info and "?"); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
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69 |
end |
5fcf9d558250
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70 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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71 |
if last_heartbeat_time then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
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72 |
local time_since_heartbeat = current_time - last_heartbeat_time; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
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73 |
if ok then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
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74 |
if time_since_heartbeat > threshold then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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|
75 |
status_text = ("TIMEOUT (%0.2fs)"):format(time_since_heartbeat); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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76 |
ok = false; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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|
77 |
else |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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78 |
status_text = status_text:gsub("^%S+", "GOOD"); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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79 |
end |
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80 |
end |
5fcf9d558250
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81 |
end |
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82 |
|
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Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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83 |
if not ok then |
5fcf9d558250
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Matthew Wild <mwild1@gmail.com>
parents:
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84 |
all_ok = false; |
2769
85cf9a8b4020
mod_http_host_status_check: Add list of failing hosts to the first line for summary
Matthew Wild <mwild1@gmail.com>
parents:
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|
85 |
table.insert(failed_hosts, host); |
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86 |
end |
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87 |
|
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88 |
if not ok or is_component or last_heartbeat_time then |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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parents:
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89 |
host_statuses[host] = string_pad(status_text, 20); |
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90 |
end |
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mod_http_host_status_check: Emit log message when host status is not the same as last time we looked
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91 |
local last_ok = host_status_ok[host]; |
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92 |
if last_ok ~= ok then |
7356d722e180
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93 |
if last_ok ~= nil then |
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94 |
module:log("warn", "Host status check %s (%s)", ok and "OK" or "FAILED", status_text); |
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|
95 |
end |
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96 |
host_status_ok[host] = ok; |
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97 |
end |
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parents:
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changeset
|
98 |
end |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
99 |
local page = template(status_page_template, { |
2769
85cf9a8b4020
mod_http_host_status_check: Add list of failing hosts to the first line for summary
Matthew Wild <mwild1@gmail.com>
parents:
2233
diff
changeset
|
100 |
status = all_ok and "OK" or ("FAIL: "..table.concat(failed_hosts, ", ")); |
2223
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
101 |
host_statuses = host_statuses; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
102 |
}); |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
103 |
return page; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
104 |
end |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
105 |
|
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
106 |
module:provides("http", { |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
107 |
route = { |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
108 |
GET = status_page; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
109 |
}; |
5fcf9d558250
Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
110 |
}) |