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--- devel:kamailio-5.0-design [2016/02/24 23:34]
miconda [Build System]
+++ devel:kamailio-5.0-design [2016/03/01 09:25]
miconda [Exporting Functions To Embedded Interpreters]
@@ Line 1: / Line 1: @@
 ====== Kamailio v5.0 Design ======
+===== Overview =====
 After 15 years of development, it is time for Kamailio v5.0.
+This page collects suggestions and ideas for major refactoring of various components to make the leap to v5.0.
+When adding a remark that needs to be tracked by author, use initials in front of the paragraph. The list of contributors to this document and initials:
+  * Daniel-Constantin Mierla (dcm)
+===== Initial Remarks =====
+Initial content for this document is listing also ideas popped up during discussions at Fosdem 2016 and Kamailio Development Workshop - among participants: Camille Oudout, Daniel-Constantin Mierla, Federico Cabiddu, Giacomo Vacca, Henning Westerholt, Olle E. Johansson, Torrey Searle, Victor Seva.
 ===== Configuration File =====
+Goals:
+  * have at least one option of an optimized configuration file interpreter targeting high performance SIP routing deployments
+  * have at least one option of a more flexible configuration language that allows:
+    * extended language syntax
+    * reloading routing rules at runtime
+To achieve the above, following sub-sections collects the proposals for configuration file language.
 ==== Exporting Functions To Embedded Interpreters ====
-  * define and implement an export interface from modules to embedded interpreters to automatically add new functions to embedded interpreters, in a similar fashion as for adding functions to configuration file
+  * define and implement an export interface from modules to embedded interpreters to automatically add new functions to embedded interpreters
+  * it should be in a similar fashion as for adding functions to configuration file, but without fixup mechanism, so bare string/integer parameters can be provided by embedded interpreters
+Interface fields:
+  * submodule name in embedded interpreter
+  * function name in embedded interpreter
+  * parameter types
+  * pointer to c function
+Example:
+<code c>
+// export t_reply(200, "OK")
+sr_exapi_t mod_exapi[] = {
+  { "sr.tm", "reply", {PARAM_INT, PARAM_STR, 0}, t_reply },
+  { 0, 0, {0}, 0}
+};
+</code>
 ==== Routing Logic In Embedded Interpreters Scripting ====
@@ Line 16: / Line 57: @@
 ===== Source Tree Structure =====
+Goals:
+  * group files per components to be easier to spot their role, especially the core, include files and utilities
+==== Reorganizing Source Files Location ====
 It was discussed in the past:
   * source code files should be relocated to have a better structure for include headers, core files, modules and internal libraries as well as utilities
+Two models proposed:
+  * a) only move core files in a new 'core' folder in the root directory
+  * b) move all source code files for Kamailio in a new 'src' folder, with further re-organization with subfolders inside 'src'
 ===== Build System =====
-Revising the build system based on Makefiles.
+Goals:
+  * revising the build system based on Makefiles.
+==== Reviewing Alternative Build Systems ====
 Alternatives to analyze:
@@ Line 31: / Line 87: @@
 ===== Continuous Integration =====
+Goals:
+  * attempt to make a more consistent and "easy to contribute to" continuous integration eco-system
 ==== Unit Test Framework ====

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