MAJOR rework

- improves a lot on the Go side including better config and logging libraries (including log rotation), better internal package distribution, and new a3go functionality to make data transfer more performant
- SQF side preprocessing of capture data is now minimal - arrays in hashmap format are sent directly to the extension and parsed there to minimize game impact
- CBA custom events are implemented in a better fashion
- README update
- license change
- with performance improvements, the deep customization of integrated metric gathering is removed in return to a single refreshRateMs, defining the interval at which core metrics are captured
- peeled back the list of core metrics to the core information used in troubleshooting and benchmarking

addons/main/fnc_postInit.sqf

@@ -0,0 +1,159 @@
+#include "script_component.hpp"
+// if (!isServer) exitWith {};
+
+if (is3DEN || !isMultiplayer) exitWith {};
+if (!isServer && hasInterface) exitWith {};
+
+
+GVARMAIN(cbaLoaded) = isClass(configFile >> "CfgPatches" >> "cba_main");
+GVARMAIN(logPrefix) = QUOTE(PREFIX_BEAUTIFIED);
+GVARMAIN(extensionName) = QUOTE(PREFIX);
+
+
+// Create listener for async callbacks
+addMissionEventHandler [
+    "ExtensionCallback",
+    FUNC(callbackHandler)
+];
+
+// start loading the extension
+[(parseSimpleArray (GVARMAIN(extensionName) callExtension ":START:")) select 0] remoteExec ["systemChat", 0];
+
+// load settings from extension
+private _settings = GVARMAIN(extensionName) callExtension ":SETTINGS:";
+if (isNil "_settings") exitWith {
+    diag_log formatText[
+        "[%1] (ERROR): IFXMetrics extension settings not loaded. IFXMetrics will not be available.",
+        GVARMAIN(logPrefix)
+    ];
+};
+
+_settingsArr = parseSimpleArray _settings;
+GVARMAIN(enabled) = _settingsArr select 0;
+GVARMAIN(debug) = _settingsArr select 1;
+GVARMAIN(refreshRateMs) = _settingsArr select 2;
+
+if (!GVARMAIN(enabled)) exitWith {
+    diag_log formatText[
+        "[%1] (WARN): IFXMetrics config entry influxdb.enabled is false. IFXMetrics will not be available.",
+        GVARMAIN(logPrefix)
+    ];
+};
+
+// get custom CBA handlers
+private _handlersFromExtension = GVARMAIN(extensionName) callExtension ":CUSTOM:CBA:EVENTS:";
+
+_handlersFromExtension = parseSimpleArray _handlersFromExtension;
+if (count _handlersFromExtension isEqualTo 0) then {
+    diag_log formatText[
+        "[%1] (WARN): IFXMetrics custom CBA handlers failed to parse. Custom events will not be logged.",
+        GVARMAIN(logPrefix)
+    ];
+} else {
+    diag_log formatText[
+        "[%1] (INFO): IFXMetrics custom CBA handlers loaded: %2",
+        GVARMAIN(logPrefix),
+        _handlersFromExtension
+    ];
+
+    // data is a keyed HashMap
+    GVARMAIN(cbaHandlers) = createHashMapFromArray _handlersFromExtension;
+};
+
+
+GVARMAIN(standardTags) = [
+    ["profile", profileName],
+    ["world", worldName],
+    ["server", serverName]
+];
+
+
+
+// Connect to InfluxDB
+private _connectResult = parseSimpleArray (GVARMAIN(extensionName) callExtension ":INFLUX:CONNECT:");
+if (count _connectResult isEqualTo 0) exitWith {
+    diag_log formatText[
+        "[%1] (ERROR): IFXMetrics failed to connect to InfluxDB. IFXMetrics will not be available.",
+        GVARMAIN(logPrefix)
+    ];
+};
+if (_connectResult select 0 isNotEqualTo "OK") exitWith {
+    diag_log formatText[
+        "[%1] (ERROR): IFXMetrics failed to connect to InfluxDB. IFXMetrics will not be available.",
+        GVARMAIN(logPrefix)
+    ];
+};
+[format ["%1", (_connectResult select 1)]] remoteExec ["systemChat", 0];
+
+
+// Send initial mission info
+[
+    "DEBUG",
+    str (call EFUNC(capture,running_mission))
+] call FUNC(log);
+
+GVARMAIN(extensionName) callExtension [
+    ":INFLUX:WRITE:",
+    [(call EFUNC(capture,running_mission))]
+];
+
+
+// Set up CBA event listeners
+/* example usage:
+["milsimServerEfficiency", [
+    [ // tags in hash format. must be string values!
+        ["missionPhase", "init"]
+    ],
+    [ // fields in hash format. can be any type
+        ["value", 0.5]
+        ["numberOfShinyObjects", 3]
+    ]
+]] call CBA_fnc_serverEvent;
+*/
+{
+    _key = _x;
+    _hash = createHashMapFromArray _y;
+    [
+        _hash get "eventName", // event name
+        { // function
+
+            if (count _this isNotEqualTo 2) exitWith {
+                diag_log formatText[
+                    "[%1] (ERROR): IFXMetrics CBA handler %2 received invalid number of arguments. Expected 2, got %3.",
+                    GVARMAIN(logPrefix),
+                    _thisType,
+                    count _this
+                ];
+            };
+
+            _thisArgs params [
+                "_enabled",
+                "_bucket",
+                "_measurement",
+                "_description"
+            ];
+            private _data = [
+                ["bucket", _bucket],
+                ["measurement", _measurement],
+                ["tags", _this#0],
+                ["fields", _this#1]
+            ];
+
+            GVARMAIN(extensionName) callExtension [
+                ":INFLUX:WRITE:",
+                [_data]
+            ];
+        },
+        [ // args
+            _key,
+            _hash get "enabled",
+            _hash get "bucket", 
+            _hash get "measurement",
+            _hash get "description"
+        ]
+    ] call CBA_fnc_addEventHandlerArgs;
+} forEach GVARMAIN(cbaHandlers);
+
+
+// wait five seconds, then start the loop
+call FUNC(captureLoop);