common: move json_stream from lightningd/ to common/

It's not lightningd-specific and we are going to need it for libplugin. The only
drawback is the log_io removal in json_stream_output_write()..

common/Makefile

@@ -34,6 +34,7 @@ COMMON_SRC_NOGEN :=				\
 	common/io_lock.c			\
 	common/json.c				\
 	common/json_helpers.c			\
+	common/json_stream.c			\
 	common/json_tok.c			\
 	common/key_derive.c			\
 	common/keyset.c				\

common/json_stream.c

@@ -6,10 +6,8 @@
 #include <ccan/str/hex/hex.h>
 #include <ccan/tal/str/str.h>
 #include <common/daemon.h>
+#include <common/json_stream.h>
 #include <common/utils.h>
-#include <lightningd/json.h>
-#include <lightningd/json_stream.h>
-#include <lightningd/log.h>
 #include <stdarg.h>
 #include <stdio.h>
 
@@ -208,8 +206,6 @@ static struct io_plan *json_stream_output_write(struct io_conn *conn,
 	}
 
 	js->reader = conn;
-	if (js->log)
-		log_io(js->log, LOG_IO_OUT, NULL, "", p, js->len_read);
 	return io_write(conn,
 			p, js->len_read,
 			json_stream_output_write, js);

common/json_stream.h

@@ -1,8 +1,8 @@
 /* lightningd/json_stream.h
  * Helpers for outputting JSON results into a membuf.
  */
-#ifndef LIGHTNING_LIGHTNINGD_JSON_STREAM_H
-#define LIGHTNING_LIGHTNINGD_JSON_STREAM_H
+#ifndef LIGHTNING_COMMON_JSON_STREAM_H
+#define LIGHTNING_COMMON_JSON_STREAM_H
 #include "config.h"
 #include <ccan/membuf/membuf.h>
 #include <ccan/short_types/short_types.h>
@@ -131,4 +131,4 @@ struct io_plan *json_stream_output_(struct json_stream *js,
 
 void json_stream_flush(struct json_stream *js);
 
-#endif /* LIGHTNING_LIGHTNINGD_JSON_STREAM_H */
+#endif /* LIGHTNING_COMMON_JSON_STREAM_H */

lightningd/Makefile

@@ -42,6 +42,7 @@ LIGHTNINGD_COMMON_OBJS :=			\
 	common/io_lock.o			\
 	common/json.o				\
 	common/json_helpers.o			\
+	common/json_stream.o			\
 	common/json_tok.o			\
 	common/memleak.o			\
 	common/msg_queue.o			\
@@ -81,7 +82,6 @@ LIGHTNINGD_SRC :=				\
 	lightningd/invoice.c			\
 	lightningd/io_loop_with_timers.c	\
 	lightningd/json.c			\
-	lightningd/json_stream.c		\
 	lightningd/jsonrpc.c			\
 	lightningd/lightningd.c			\
 	lightningd/log.c			\

lightningd/connect_control.c

@@ -6,6 +6,7 @@
 #include <common/features.h>
 #include <common/json_command.h>
 #include <common/json_helpers.h>
+#include <common/json_stream.h>
 #include <common/jsonrpc_errors.h>
 #include <common/memleak.h>
 #include <common/node_id.h>
@@ -21,7 +22,6 @@
 #include <lightningd/connect_control.h>
 #include <lightningd/hsm_control.h>
 #include <lightningd/json.h>
-#include <lightningd/json_stream.h>
 #include <lightningd/jsonrpc.h>
 #include <lightningd/lightningd.h>
 #include <lightningd/log.h>

lightningd/json.c

@@ -10,6 +10,7 @@
 #include <common/json.h>
 #include <common/json_command.h>
 #include <common/json_helpers.h>
+#include <common/json_stream.h>
 #include <common/jsonrpc_errors.h>
 #include <common/memleak.h>
 #include <common/node_id.h>
@@ -21,7 +22,6 @@
 #include <gossipd/routing.h>
 #include <lightningd/chaintopology.h>
 #include <lightningd/json.h>
-#include <lightningd/json_stream.h>
 #include <lightningd/jsonrpc.h>
 #include <lightningd/options.h>
 #include <sys/socket.h>

lightningd/jsonrpc.h

@@ -6,7 +6,7 @@
 #include <ccan/list/list.h>
 #include <common/errcode.h>
 #include <common/json.h>
-#include <lightningd/json_stream.h>
+#include <common/json_stream.h>
 #include <stdarg.h>
 
 struct jsonrpc;

lightningd/plugin_hook.h

@@ -5,7 +5,7 @@
 #include <ccan/autodata/autodata.h>
 #include <ccan/tal/tal.h>
 #include <ccan/typesafe_cb/typesafe_cb.h>
-#include <lightningd/json_stream.h>
+#include <common/json_stream.h>
 #include <lightningd/lightningd.h>
 #include <lightningd/plugin.h>
 

lightningd/test/run-jsonrpc.c

@@ -1,4 +1,4 @@
-#include "../json_stream.c"
+#include "../../common/json_stream.c"
 #include "../jsonrpc.c"
 #include "../json.c"