[Tarantool-patches] [PATCH 03/10] core/say: do not reconfig early set up logger

[Cyrill Gorcunov <gorcunov@gmail.com>]

We gonna support logger configuration on its own
without requirement to call `box.cfg{}`. Thus lets
say_logger_init() to skip processing if we already
did.

Note it is preparatory for next patches. Currently
the init called once.

Part-of #689

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 src/lib/core/say.c | 13 +++++++++++++
 src/lib/core/say.h |  4 ++++
 2 files changed, 17 insertions(+)

diff --git a/src/lib/core/say.c b/src/lib/core/say.c
index e22089aac..d8f59fb9b 100644
--- a/src/lib/core/say.c
+++ b/src/lib/core/say.c
@@ -684,10 +684,23 @@ log_create(struct log *log, const char *init_str, int nonblock)
 	return 0;
 }
 
+bool
+say_logger_initialized(void)
+{
+	return log_default == &log_std;
+}
+
 void
 say_logger_init(const char *init_str, int level, int nonblock,
 		const char *format, int background)
 {
+	/*
+	 * The logger may be early configured
+	 * by hands without configuing the whole box.
+	 */
+	if (say_logger_initialized())
+		return;
+
 	if (log_create(&log_std, init_str, nonblock) < 0)
 		goto fail;
 
diff --git a/src/lib/core/say.h b/src/lib/core/say.h
index c50d7bbf4..857145465 100644
--- a/src/lib/core/say.h
+++ b/src/lib/core/say.h
@@ -274,6 +274,10 @@ say_logger_init(const char *init_str,
 		const char *log_format,
 		int background);
 
+/** Test if logger is initialized. */
+bool
+say_logger_initialized(void);
+
 /** Free default logger */
 void
 say_logger_free();
-- 
2.26.2