[PATCH v5 iproute2 5/8] rdma: Add json and pretty outputs

Leon Romanovsky
2017-08-17T06:37:35Z

rdma/rdma.c | 31 ++++++++++++++++++++++++++++---
rdma/rdma.h | 4 ++++
2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/rdma/rdma.c b/rdma/rdma.c
index 74c09e8b..f9f4f2a2 100644
--- a/rdma/rdma.c
+++ b/rdma/rdma.c
@@ -16,7 +16,7 @@ static void help(char *name)
{
pr_out("Usage: %s [ OPTIONS ] OBJECT { COMMAND | help }\n"
"where OBJECT := { dev | link | help }\n"
- " OPTIONS := { -V[ersion] | -d[etails]}\n", name);
+ " OPTIONS := { -V[ersion] | -d[etails] | -j[son] | -p[retty]}\n", name);
}

static int cmd_help(struct rd *rd)
@@ -47,6 +47,16 @@ static int rd_init(struct rd *rd, int argc, char **argv, char *filename)
rd->argc = argc;
rd->argv = argv;
INIT_LIST_HEAD(&rd->dev_map_list);
+
+ if (rd->json_output) {
+ rd->jw = jsonw_new(stdout);
+ if (!rd->jw) {
+ pr_err("Failed to create JSON writer\n");
+ return -ENOMEM;
+ }
+ jsonw_pretty(rd->jw, rd->pretty_output);
+ }
+
rd->buff = malloc(MNL_SOCKET_BUFFER_SIZE);
if (!rd->buff)
return -ENOMEM;
@@ -62,6 +72,8 @@ static int rd_init(struct rd *rd, int argc, char **argv, char *filename)

static void rd_free(struct rd *rd)
{
+ if (rd->json_output)
+ jsonw_destroy(&rd->jw);
free(rd->buff);
rd_free_devmap(rd);
}
@@ -71,10 +83,14 @@ int main(int argc, char **argv)
static const struct option long_options[] = {
{ "version", no_argument, NULL, 'V' },
{ "help", no_argument, NULL, 'h' },
+ { "json", no_argument, NULL, 'j' },
+ { "pretty", no_argument, NULL, 'p' },
{ "details", no_argument, NULL, 'd' },
{ NULL, 0, NULL, 0 }
};
+ bool pretty_output = false;
bool show_details = false;
+ bool json_output = false;
char *filename;
struct rd rd;
int opt;
@@ -82,16 +98,22 @@ int main(int argc, char **argv)

filename = basename(argv[0]);

- while ((opt = getopt_long(argc, argv, "Vhd",
+ while ((opt = getopt_long(argc, argv, "Vhdpj",
long_options, NULL)) >= 0) {
switch (opt) {
case 'V':
printf("%s utility, iproute2-ss%s\n",
filename, SNAPSHOT);
return EXIT_SUCCESS;
+ case 'p':
+ pretty_output = true;
+ break;
case 'd':
show_details = true;
break;
+ case 'j':
+ json_output = true;
+ break;
case 'h':
help(filename);
return EXIT_SUCCESS;
@@ -105,11 +127,14 @@ int main(int argc, char **argv)
argc -= optind;
argv += optind;

+ rd.show_details = show_details;
+ rd.json_output = json_output;
+ rd.pretty_output = pretty_output;
+
err = rd_init(&rd, argc, argv, filename);
if (err)
goto out;

- rd.show_details = show_details;
err = rd_cmd(&rd);
out:
/* Always cleanup */
diff --git a/rdma/rdma.h b/rdma/rdma.h
index 8037e2e6..5904f177 100644
--- a/rdma/rdma.h
+++ b/rdma/rdma.h
@@ -23,6 +23,7 @@

#include "list.h"
#include "utils.h"
+#include "json_writer.h"

#define pr_err(args...) fprintf(stderr, ##args)
#define pr_out(args...) fprintf(stdout, ##args)
@@ -48,6 +49,9 @@ struct rd {
struct mnl_socket *nl;
struct nlmsghdr *nlh;
char *buff;
+ json_writer_t *jw;
+ bool json_output;
+ bool pretty_output;
};

struct rd_cmd {