From 6cc96d8fae4061c50035581a023177c6a44bceeb Mon Sep 17 00:00:00 2001
From: "ged@faeriemud.org" <ged@faeriemud.org>
Date: Wed, 6 Oct 2021 17:25:50 +0000
Subject: [PATCH] Add Loggability for nicer debugging output.

FossilOrigin-Name: ff761d0e8e8638b1f4d98d8d913d99591d83da0167d75b28f1bd186e1907ee47
---
 ext/mdbx_ext/mdbx_ext.c | 54 +++++++++++++++++++++++++++++++++++++++++
 ext/mdbx_ext/mdbx_ext.h | 16 ++++++++++++
 gem.deps.rb             |  2 ++
 lib/mdbx.rb             |  7 ++++++
 lib/mdbx/database.rb    |  3 +++
 5 files changed, 82 insertions(+)

diff --git a/ext/mdbx_ext/mdbx_ext.c b/ext/mdbx_ext/mdbx_ext.c
index 9836b51..773fa65 100644
--- a/ext/mdbx_ext/mdbx_ext.c
+++ b/ext/mdbx_ext/mdbx_ext.c
@@ -6,6 +6,60 @@ VALUE rmdbx_mMDBX;
 VALUE rmdbx_eDatabaseError;
 VALUE rmdbx_eRollback;
 
+/*
+ * Log a message to the given +context+ object's logger.
+ */
+void
+#ifdef HAVE_STDARG_PROTOTYPES
+rmdbx_log_obj( VALUE context, const char *level, const char *fmt, ... )
+#else
+rmdbx_log_obj( VALUE context, const char *level, const char *fmt, va_dcl )
+#endif
+{
+	char buf[BUFSIZ];
+	va_list	args;
+	VALUE logger = Qnil;
+	VALUE message = Qnil;
+
+	va_init_list( args, fmt );
+	vsnprintf( buf, BUFSIZ, fmt, args );
+	message = rb_str_new2( buf );
+
+	logger = rb_funcall( context, rb_intern("log"), 0 );
+	rb_funcall( logger, rb_intern(level), 1, message );
+
+	va_end( args );
+}
+
+
+/*
+ * Log a message to the global logger.
+ */
+void
+#ifdef HAVE_STDARG_PROTOTYPES
+rmdbx_log( const char *level, const char *fmt, ... )
+#else
+rmdbx_log( const char *level, const char *fmt, va_dcl )
+#endif
+{
+	char buf[BUFSIZ];
+	va_list	args;
+	VALUE logger = Qnil;
+	VALUE message = Qnil;
+
+	va_init_list( args, fmt );
+	vsnprintf( buf, BUFSIZ, fmt, args );
+	message = rb_str_new2( buf );
+
+	logger = rb_funcall( rmdbx_mMDBX, rb_intern("logger"), 0 );
+	rb_funcall( logger, rb_intern(level), 1, message );
+
+	va_end( args );
+}
+
+
+
+
 /*
  * MDBX initialization
  */
diff --git a/ext/mdbx_ext/mdbx_ext.h b/ext/mdbx_ext/mdbx_ext.h
index 64bb63d..872e245 100644
--- a/ext/mdbx_ext/mdbx_ext.h
+++ b/ext/mdbx_ext/mdbx_ext.h
@@ -54,6 +54,22 @@ typedef struct rmdbx_db rmdbx_db_t;
 static const rb_data_type_t rmdbx_db_data;
 
 
+/* ------------------------------------------------------------
+ * Logging
+ * ------------------------------------------------------------ */
+#ifdef HAVE_STDARG_PROTOTYPES
+#include <stdarg.h>
+#define va_init_list(a,b) va_start(a,b)
+void rmdbx_log_obj( VALUE, const char *, const char *, ... );
+void rmdbx_log( const char *, const char *, ... );
+#else
+#include <varargs.h>
+#define va_init_list(a,b) va_start(a)
+void rmdbx_log_obj( VALUE, const char *, const char *, va_dcl );
+void rmdbx_log( const char *, const char *, va_dcl );
+#endif
+
+
 /* ------------------------------------------------------------
  * Globals
  * ------------------------------------------------------------ */
diff --git a/gem.deps.rb b/gem.deps.rb
index 0865dc5..3ee64ce 100644
--- a/gem.deps.rb
+++ b/gem.deps.rb
@@ -1,5 +1,7 @@
 source "https://rubygems.org/"
 
+gem 'loggability', '~> 0.17'
+
 group( :development ) do
 	gem 'pry',                     '~> 0.13'
 	gem 'rake',                    '~> 13.0'
diff --git a/lib/mdbx.rb b/lib/mdbx.rb
index a84aedf..41d4fd3 100644
--- a/lib/mdbx.rb
+++ b/lib/mdbx.rb
@@ -2,15 +2,22 @@
 # vim: set nosta noet ts=4 sw=4 ft=ruby:
 # encoding: utf-8
 
+require 'loggability'
+
 require 'mdbx_ext'
 
 
 # Top level namespace for MDBX.
 #
 module MDBX
+	extend Loggability
 
 	# The version of this gem.
 	VERSION = '0.3.2'
 
+
+	log_as :mdbx
+
+
 end # module MDBX
 
diff --git a/lib/mdbx/database.rb b/lib/mdbx/database.rb
index a25114f..4f53dfc 100644
--- a/lib/mdbx/database.rb
+++ b/lib/mdbx/database.rb
@@ -8,6 +8,9 @@ require 'mdbx' unless defined?( MDBX )
 # The primary class for interacting with an MDBX database.
 #
 class MDBX::Database
+	extend Loggability
+
+	log_to :mdbx
 
 	### call-seq:
 	###    MDBX::Database.open( path ) => db