start platform architecture page

content/docs/platform/architecture/index.md

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+---
+title: "Architecture"
+description: "How the platform is organized ?"
+weight: 2
+---
+
+
+
+## Meta
+
+In the meta directory, you will find generic interface implementations.
+Those implementations ease the adaptations of new device interfaces by taking care of most of the hard part of the behavior and letting to the user only the specific callback to implement.
+
+
+## Log
+
+In the log directory, you will find how traces of the application are managed.
+
+### class
+
+Traces in rust can take some attributes. Panduza has defined the log attribute “class” to sort event sources in the application.
+