Rearrange files to prepare to merge into Ray.

src/common/logging.h

@@ -0,0 +1,39 @@
+#ifndef LOGGING_H
+#define LOGGING_H
+
+#define RAY_VERBOSE -1
+#define RAY_DEBUG 0
+#define RAY_INFO 1
+#define RAY_WARNING 2
+#define RAY_ERROR 3
+#define RAY_FATAL 4
+
+/* Entity types. */
+#define RAY_FUNCTION "FUNCTION"
+#define RAY_OBJECT "OBJECT"
+#define RAY_TASK "TASK"
+
+typedef struct ray_logger_impl ray_logger;
+
+/* Initialize a Ray logger for the given client type and logging level. If the
+ * is_direct flag is set, the logger will treat the given connection as a
+ * direct connection to the log. Otherwise, it will treat it as a socket to
+ * another process with a connection to the log.
+ * NOTE: User is responsible for freeing the returned logger. */
+ray_logger *init_ray_logger(const char *client_type,
+                            int log_level,
+                            int is_direct,
+                            void *conn);
+
+/* Free the logger. This does not free the connection to the log. */
+void free_ray_logger(ray_logger *logger);
+
+/* Log an event at the given log level with the given event_type.
+ * NOTE: message cannot contain spaces! JSON format is recommended.
+ * TODO: Support spaces in messages. */
+void ray_log(ray_logger *logger,
+             int log_level,
+             const char *event_type,
+             const char *message);
+
+#endif