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Diffstat (limited to 'docs/part-1/3-Plugins.md')
| -rw-r--r-- | docs/part-1/3-Plugins.md | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/docs/part-1/3-Plugins.md b/docs/part-1/3-Plugins.md index 50ece7b..b58bbad 100644 --- a/docs/part-1/3-Plugins.md +++ b/docs/part-1/3-Plugins.md @@ -1,15 +1,23 @@ # Plugins -Plugins are C/C++ shared library loaded by the binding to execute some +Plugins are C/C++ shared libraries loaded by the binding to execute some simple routine. Routine could be on reception of a new signal or at sources initialization time or signal subscription with the respective JSON field -**onReceived**, **init** and **getSignals**. +`onReceived` `init` and `getSignals` A default plugin (builtin) is provided with 2 functions: - **defaultOnReceived**: set and record a new signal value and its timestamp in the signal composer service. It simply tooks the incoming event JSON object - and search for *key* **value** and **timestamp** then call function + and search for *key* `value` and `timestamp` then call function `setSignalValue`. -- **setSignalValueWrap**: a **lua2c** function the could be called from any LUA +- **setSignalValueWrap**: a `lua2c` function the could be called from any LUA script to record a new signal value. + +> **CAUTION**: `timestamp` value has to be typed as *uint64_t* with +> a **nanosecond** precision using a realtime clock. To correctly store it in +> a JSON-C object use the int64 type with the according fonctions: +> *json_object_new_int64()* +> *json_object_get_int64()* +> *json_object_set_int64()* +> *...* |