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--[[
Copyright (C) 2018 "IoT.bzh"
Author Sebastien Douheret <sebastien@iot.bzh>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
NOTE: strict mode: every global variables should be prefixed by '_'
--]]
-- return serialised version of printable table
function ToJson(o)
if type(o) == "table" then
local s = "{"
local i = 0
for k, v in pairs(o) do
if (i > 0) then
s = s .. ","
end
i = i + 1
if type(k) ~= "number" then
k = '"' .. k .. '"'
end
s = s .. k .. ":" .. ToJson(v)
end
return s .. "}"
else
return '"' .. tostring(o) .. '"'
end
end
function _trace_hello_events_(source, args, event)
-- TODO nothing for now
end
function _trace_Async_CB(source, response, context)
--AFB:debug(source, "--InLua-- _trace_Async_CB response=%s context=%s\n", Dump_Table(response), Dump_Table(context))
if (response["request"]["status"] ~= "success") then
AFB:error(source, "--InLua-- _trace_Async_CB response=%s context=%s", Dump_Table(response), Dump_Table(context))
return
end
end
function _trace_events_(source, args, event)
--AFB:notice(source, "--InLua-- ENTER _trace_events_ event=%s\n", Dump_Table(event))
local query = {
["host"] = "localhost",
["port"] = 8086,
["metric"] = {
{
["name"] = "xds/supervisor/trace",
["metadata"] = {
["identity"] = "xds_supervisor",
["tag"] = event["tag"]
},
["values"] = {
["id"] = event["id"]
},
["timestamp"] = event["time"]
}
}
}
if event.request then
local request = event.request
-- Filter out some traces
-- if (request.action == "begin" and request.action == "end" and request.action == "json") then
-- AFB:debug(source, "--InLua-- _trace_events_ IGNORED event=%s\n", Dump_Table(event))
-- return
-- end
AFB:notice(source, ">>> PROCESS request %s", request)
query.metric[1].metadata.type = "request"
query.metric[1].metadata.api = request.api
query.metric[1].metadata.verb = request.verb
query.metric[1].metadata.action = request.action
query.metric[1].metadata.session = request.session
query.metric[1].metadata.req_index = tostring(request.index)
if event.data then
local dd = ToJson(event.data)
query.metric[1].values.data = dd
query.metric[1].values.data_bytes = string.len(dd)
end
elseif event.event then
local evt = event.event
AFB:notice(source, ">>> PROCESS event %s", evt)
query.metric[1].metadata.type = "event"
query.metric[1].metadata.id = evt.id
query.metric[1].metadata.name = evt.name
query.metric[1].metadata.action = evt.action
if event.data then
local dd = ToJson(event.data)
query.metric[1].values.data = dd
query.metric[1].values.data_bytes = string.len(dd)
end
else
AFB:warning(source, "--InLua-- UNKNOWN _trace_events_ event type: %s\n", Dump_Table(event))
return
end
AFB:debug(source, "CALL harvester write query=%s", Dump_Table(query))
local err, response = AFB:service(source, "harvester", "write", query, "_trace_Async_CB", query)
-- FIXME SEB : still true ?
-- Note: in current version controls only return a status. Also we may safely ignore API response
if (err) then
AFB:error(source, "--LUA:_trace_events_ harvester write refuse response=%s", response)
return 1
end
return 0
end
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