1 files changed, 119 insertions, 0 deletions
diff --git a/conf.d/project/lua.d/xds-supervisor.lua b/conf.d/project/lua.d/xds-supervisor.lua
new file mode 100644
index 0000000..747d33d
--- /dev/null
+++ b/conf.d/project/lua.d/xds-supervisor.lua
@@ -0,0 +1,119 @@
+--[[
+  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"] = "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.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
+            query.metric[1].values.data = ToJson(event.data)
+        end
+
+    elseif event.event then
+        local evt = event.event
+        AFB:notice(source, ">>> PROCESS event %s", evt)
+        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
+            query.metric[1].values.data = ToJson(event.data)
+        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