feat: add messagequeue api

include/api.h

@@ -0,0 +1,27 @@
+#ifndef SCI_API_H
+#define SCI_API_H
+
+// Start the api. This will also trigger an "sci started" event.
+// Note that this is a blocking call.
+void* api_start(void*);
+
+// Fork the process and have the child run the api.
+void api_start_p();
+
+// Destroy all listeners and release the message queue.
+void api_destroy();
+
+// Post a newline-separated string with pipeline_id entries
+// of the currently running pipelines on the message queue.
+void api_list_running_pipelines();
+
+// Trigger a pipeline started event.
+void api_pipeline_started(const char* pipeline_id, const char* name);
+
+// Trigger a pipeline ended event.
+void api_pipeline_ended(const char* pipeline_id, const char* name, int exit_code);
+
+// Trigger an api started event.
+void api_started();
+
+#endif // !SCI_API_H

include/pipeline.h

@@ -36,12 +36,13 @@ typedef struct {
     char* command;
 } pipeline_event;
 
-// create a new pipeline_conf struct instance based on a configuration line.
+// create a new `pipeline_conf` struct instance based on a configuration line.
 optional_pipeline_conf pipeline_create(const char* config_line);
 void pipeline_event_destroy(pipeline_event* ev);
 void pipeline_destroy(pipeline_conf* conf);
 void pipeline_register(pthread_t thread);
 void pipeline_loop();
 void pipeline_cancel();
+int pipeline_count();
 
 #endif

include/util.h

@@ -42,6 +42,8 @@ void per_line(const char* file, line_handler handler);
 char* join(const char* a, const char* b);
 char* join3(const char* a, const char* b, const char* c);
 char* join4(const char* a, const char* b, const char* c, const char* d);
+char* join5(const char* a, const char* b, const char* c, const char* d, const char* e);
+char* join6(const char* a, const char* b, const char* c, const char* d, const char* e, const char* f);
 
 const char* skip_arg(const char* cp);
 char* skip_spaces(const char* str);