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Date: Tue, 12 Jun 2018 09:32:28 +0700
From: Hoang Le <hoang.h.le@...tech.com.au>
To: netdev@...r.kernel.org, tipc-discussion@...ts.sourceforge.net
Subject: [iproute2-next v3 1/2] tipc: JSON support for showing nametable
Add json output support for nametable show
Example output:
$tipc -j -p nametable show
[ {
"type": 0,
"lower": 16781313,
"upper": 16781313,
"scope": "zone",
"port": 0,
"node": ""
},{
"type": 0,
"lower": 16781416,
"upper": 16781416,
"scope": "cluster",
"port": 0,
"node": ""
} ]
v2:
Replace variable 'json_flag' by 'json' declared in include/utils.h
Add new parameter '-pretty' to support pretty output
v3:
Update manual page
Acked-by: Jon Maloy <jon.maloy@...csson.com>
Signed-off-by: Hoang Le <hoang.h.le@...tech.com.au>
---
man/man8/tipc-nametable.8 | 10 ++++++++++
man/man8/tipc.8 | 9 +++++++++
tipc/nametable.c | 31 ++++++++++++++++++++++---------
tipc/tipc.c | 20 +++++++++++++++++++-
4 files changed, 60 insertions(+), 10 deletions(-)
diff --git a/man/man8/tipc-nametable.8 b/man/man8/tipc-nametable.8
index 4bcefe47f6b1..b187d25e1e1f 100644
--- a/man/man8/tipc-nametable.8
+++ b/man/man8/tipc-nametable.8
@@ -18,6 +18,16 @@ tipc-nametable \- show TIPC nametable
Options (flags) that can be passed anywhere in the command chain.
.TP
.BR "\-h" , " --help"
+
+.TP
+.BR "\-j", " \-json"
+Output results in JavaScript Object Notation (JSON).
+
+.TP
+.BR "\-p", " \-pretty"
+The default JSON format is compact and more efficient to parse but hard for most users to read.
+This flag adds indentation for readability.
+
Show help about last valid command. For example
.B tipc nametable --help
will show nametable help and
diff --git a/man/man8/tipc.8 b/man/man8/tipc.8
index 32943fa50b23..6706cca12427 100644
--- a/man/man8/tipc.8
+++ b/man/man8/tipc.8
@@ -40,6 +40,15 @@ will show bearer help and
.B tipc --help
will show general help. The position of the option in the string is irrelevant.
+.TP
+.BR "\-j", " \-json"
+Output results in JavaScript Object Notation (JSON).
+
+.TP
+.BR "\-p", " \-pretty"
+The default JSON format is compact and more efficient to parse but hard for most users to read.
+This flag adds indentation for readability.
+
.SH COMMANDS
.TP
diff --git a/tipc/nametable.c b/tipc/nametable.c
index ae73dfa5f8b9..eb4bd0bda835 100644
--- a/tipc/nametable.c
+++ b/tipc/nametable.c
@@ -21,6 +21,7 @@
#include "msg.h"
#include "nametable.h"
#include "misc.h"
+#include "utils.h"
#define PORTID_STR_LEN 45 /* Four u32 and five delimiter chars */
@@ -46,7 +47,7 @@ static int nametable_show_cb(const struct nlmsghdr *nlh, void *data)
if (!publ[TIPC_NLA_NAME_TABLE_PUBL])
return MNL_CB_ERROR;
- if (!*iteration)
+ if (!*iteration && !is_json_context())
printf("%-10s %-10s %-10s %-8s %-10s %-33s\n",
"Type", "Lower", "Upper", "Scope", "Port",
"Node");
@@ -54,13 +55,20 @@ static int nametable_show_cb(const struct nlmsghdr *nlh, void *data)
hash2nodestr(mnl_attr_get_u32(publ[TIPC_NLA_PUBL_NODE]), str);
- printf("%-10u %-10u %-10u %-8s %-10u %s\n",
- mnl_attr_get_u32(publ[TIPC_NLA_PUBL_TYPE]),
- mnl_attr_get_u32(publ[TIPC_NLA_PUBL_LOWER]),
- mnl_attr_get_u32(publ[TIPC_NLA_PUBL_UPPER]),
- scope[mnl_attr_get_u32(publ[TIPC_NLA_PUBL_SCOPE])],
- mnl_attr_get_u32(publ[TIPC_NLA_PUBL_REF]),
- str);
+ open_json_object(NULL);
+ print_uint(PRINT_ANY, "type", "%-10u",
+ mnl_attr_get_u32(publ[TIPC_NLA_PUBL_TYPE]));
+ print_uint(PRINT_ANY, "lower", "%-10u",
+ mnl_attr_get_u32(publ[TIPC_NLA_PUBL_LOWER]));
+ print_uint(PRINT_ANY, "upper", "%-10u",
+ mnl_attr_get_u32(publ[TIPC_NLA_PUBL_UPPER]));
+ print_string(PRINT_ANY, "scope", "%-8s",
+ scope[mnl_attr_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
+ print_uint(PRINT_ANY, "port", "%-10u",
+ mnl_attr_get_u32(publ[TIPC_NLA_PUBL_REF]));
+ print_string(PRINT_ANY, "node", "%s", str);
+ print_string(PRINT_FP, NULL, "\n", "");
+ close_json_object();
return MNL_CB_OK;
}
@@ -70,6 +78,7 @@ static int cmd_nametable_show(struct nlmsghdr *nlh, const struct cmd *cmd,
{
int iteration = 0;
char buf[MNL_SOCKET_BUFFER_SIZE];
+ int rc = 0;
if (help_flag) {
fprintf(stderr, "Usage: %s nametable show\n", cmdl->argv[0]);
@@ -81,7 +90,11 @@ static int cmd_nametable_show(struct nlmsghdr *nlh, const struct cmd *cmd,
return -1;
}
- return msg_dumpit(nlh, nametable_show_cb, &iteration);
+ new_json_obj(json);
+ rc = msg_dumpit(nlh, nametable_show_cb, &iteration);
+ delete_json_obj();
+
+ return rc;
}
void cmd_nametable_help(struct cmdl *cmdl)
diff --git a/tipc/tipc.c b/tipc/tipc.c
index 600d5e2a160f..f85ddee0e278 100644
--- a/tipc/tipc.c
+++ b/tipc/tipc.c
@@ -24,6 +24,8 @@
#include "cmdl.h"
int help_flag;
+int json;
+int pretty;
static void about(struct cmdl *cmdl)
{
@@ -33,6 +35,8 @@ static void about(struct cmdl *cmdl)
"\n"
"Options:\n"
" -h, --help \t\tPrint help for last given command\n"
+ " -j, --json \t\tJson format printouts\n"
+ " -p, --pretty \t\tpretty print\n"
"\n"
"Commands:\n"
" bearer - Show or modify bearers\n"
@@ -53,6 +57,8 @@ int main(int argc, char *argv[])
const struct cmd cmd = {"tipc", NULL, about};
struct option long_options[] = {
{"help", no_argument, 0, 'h'},
+ {"json", no_argument, 0, 'j'},
+ {"pretty", no_argument, 0, 'p'},
{0, 0, 0, 0}
};
const struct cmd cmds[] = {
@@ -69,7 +75,7 @@ int main(int argc, char *argv[])
do {
int option_index = 0;
- i = getopt_long(argc, argv, "h", long_options, &option_index);
+ i = getopt_long(argc, argv, "hjp", long_options, &option_index);
switch (i) {
case 'h':
@@ -79,6 +85,18 @@ int main(int argc, char *argv[])
*/
help_flag = 1;
break;
+ case 'j':
+ /*
+ * Enable json format printouts
+ */
+ json = 1;
+ break;
+ case 'p':
+ /*
+ * Enable json pretty output
+ */
+ pretty = 1;
+ break;
case -1:
/* End of options */
break;
--
2.7.4
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