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Message-ID: <86ffe1d0-a82c-26d7-3144-b9116f5d211e@gmail.com>
Date: Tue, 20 Feb 2018 00:24:46 +0200
From: Serhey Popovych <serhe.popovych@...il.com>
To: Stephen Hemminger <stephen@...workplumber.org>,
netdev@...r.kernel.org
Subject: Re: [PATCH iproute2-next 1/4] bridge: implement json pretty print
flag
Stephen Hemminger wrote:
> Make bridge work like other iproute2 commands with standard -j and -p
> flags.
>
> Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
> ---
> bridge/br_common.h | 3 ++-
> bridge/bridge.c | 9 ++++++---
> bridge/fdb.c | 10 ++++++----
> bridge/mdb.c | 12 ++++++++++--
> bridge/vlan.c | 11 +++++++----
> man/man8/bridge.8 | 6 ++++++
> 6 files changed, 37 insertions(+), 14 deletions(-)
>
> diff --git a/bridge/br_common.h b/bridge/br_common.h
> index f07c7d1c9090..32dc46a2415d 100644
> --- a/bridge/br_common.h
> +++ b/bridge/br_common.h
> @@ -24,7 +24,8 @@ extern int do_link(int argc, char **argv);
> extern int preferred_family;
> extern int show_stats;
> extern int show_details;
> +extern int show_pretty;
Why not to use @pretty from utils.c/utils.h recently added as common
point for json_print.c and rest of the code with commit 543365670534
("ip: Use single variable to represent -pretty")?
While new_json_obj() from json_print.c isn't used in bridge/ it is still
seems reasonable in my opinion to use common @pretty variable.
> extern int timestamp;
> extern int compress_vlans;
> -extern int json_output;
> +extern int json;
> extern struct rtnl_handle rth;
> diff --git a/bridge/bridge.c b/bridge/bridge.c
> index 48fe1c8b2ef1..3837c3d79290 100644
> --- a/bridge/bridge.c
> +++ b/bridge/bridge.c
> @@ -22,8 +22,9 @@ int preferred_family = AF_UNSPEC;
> int oneline;
> int show_stats;
> int show_details;
> +int show_pretty;
> int compress_vlans;
> -int json_output;
> +int json;
> int timestamp;
> char *batch_file;
> int force;
> @@ -39,7 +40,7 @@ static void usage(void)
> "where OBJECT := { link | fdb | mdb | vlan | monitor }\n"
> " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] |\n"
> " -o[neline] | -t[imestamp] | -n[etns] name |\n"
> -" -c[ompressvlans] -j{son} }\n");
> +" -c[ompressvlans] -p[retty] -j{son} }\n");
> exit(-1);
> }
>
> @@ -175,7 +176,9 @@ main(int argc, char **argv)
> } else if (matches(opt, "-force") == 0) {
> ++force;
> } else if (matches(opt, "-json") == 0) {
> - ++json_output;
> + ++json;
> + } else if (matches(opt, "-pretty") == 0) {
> + ++show_pretty;
> } else if (matches(opt, "-batch") == 0) {
> argc--;
> argv++;
> diff --git a/bridge/fdb.c b/bridge/fdb.c
> index 8b133f9c1c8d..82dff5167e86 100644
> --- a/bridge/fdb.c
> +++ b/bridge/fdb.c
> @@ -132,10 +132,8 @@ int print_fdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
> if (filter_vlan && filter_vlan != vid)
> return 0;
>
> - if (jw_global) {
> - jsonw_pretty(jw_global, 1);
> + if (jw_global)
> jsonw_start_object(jw_global);
> - }
>
> if (n->nlmsg_type == RTM_DELNEIGH) {
> if (jw_global)
> @@ -388,14 +386,18 @@ static int fdb_show(int argc, char **argv)
> exit(1);
> }
>
> - if (json_output) {
> + if (json) {
> jw_global = jsonw_new(stdout);
> if (!jw_global) {
> fprintf(stderr, "Error allocation json object\n");
> exit(1);
> }
> + if (show_pretty)
> + jsonw_pretty(jw_global, 1);
> +
> jsonw_start_array(jw_global);
> }
> +
> if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
> fprintf(stderr, "Dump terminated\n");
> exit(1);
> diff --git a/bridge/mdb.c b/bridge/mdb.c
> index 62dc8a0c58c3..0873502e8a24 100644
> --- a/bridge/mdb.c
> +++ b/bridge/mdb.c
> @@ -325,7 +325,7 @@ static int mdb_show(int argc, char **argv)
> return -1;
> }
>
> - if (!json_output) {
> + if (!json) {
> /* Normal output */
> if (rtnl_dump_filter(&rth, print_mdb, stdout) < 0) {
> fprintf(stderr, "Dump terminated\n");
> @@ -333,9 +333,17 @@ static int mdb_show(int argc, char **argv)
> }
> return 0;
> }
> +
> /* Json output */
> jw_global = jsonw_new(stdout);
> - jsonw_pretty(jw_global, 1);
> + if (!jw_global) {
> + fprintf(stderr, "Error allocation json object\n");
> + exit(1);
> + }
> +
> + if (show_pretty)
> + jsonw_pretty(jw_global, 1);
> +
> jsonw_start_object(jw_global);
> jsonw_name(jw_global, "mdb");
> jsonw_start_array(jw_global);
> diff --git a/bridge/vlan.c b/bridge/vlan.c
> index f42d7e6ba244..e4eab4c2384f 100644
> --- a/bridge/vlan.c
> +++ b/bridge/vlan.c
> @@ -258,7 +258,6 @@ static int filter_vlan_check(__u16 vid, __u16 flags)
> static void print_vlan_port(FILE *fp, int ifi_index)
> {
> if (jw_global) {
> - jsonw_pretty(jw_global, 1);
> jsonw_name(jw_global,
> ll_index_to_name(ifi_index));
> jsonw_start_array(jw_global);
> @@ -578,17 +577,21 @@ static int vlan_show(int argc, char **argv)
> if (!show_stats) {
> if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK,
> (compress_vlans ?
> - RTEXT_FILTER_BRVLAN_COMPRESSED :
> - RTEXT_FILTER_BRVLAN)) < 0) {
> + RTEXT_FILTER_BRVLAN_COMPRESSED :
> + RTEXT_FILTER_BRVLAN)) < 0) {
> perror("Cannont send dump request");
> exit(1);
> }
> - if (json_output) {
> +
> + if (json) {
> jw_global = jsonw_new(stdout);
> if (!jw_global) {
> fprintf(stderr, "Error allocation json object\n");
> exit(1);
> }
> + if (show_pretty)
> + jsonw_pretty(jw_global, 1);
> +
> jsonw_start_object(jw_global);
> } else {
> if (show_vlan_tunnel_info)
> diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
> index d6baa819020a..490ef58da16c 100644
> --- a/man/man8/bridge.8
> +++ b/man/man8/bridge.8
> @@ -22,6 +22,7 @@ bridge \- show / manipulate bridge addresses and devices
> \fB\-s\fR[\fItatistics\fR] |
> \fB\-n\fR[\fIetns\fR] name |
> \fB\-b\fR[\fIatch\fR] filename |
> +\fB\-p\fR[\fIretty\fR] |
> \fB\-j\fR[\fIson\fR] }
>
> .ti -8
> @@ -171,6 +172,11 @@ return code will be non zero.
> .BR "\-json"
> Display results in JSON format. Currently available for vlan and fdb.
>
> +.TP
> +.BR "\-pretty"
> +When combined with -j generate a pretty JSON output.
> +
> +
> .SH BRIDGE - COMMAND SYNTAX
>
> .SS
>
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