cli: Fixing the xml output in failure cases for gluster peer probe

Change-Id: I9ebec995cbf47d9ced7140e37787e74ff9c63769
BUG: 879490
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/4301
Reviewed-by: Kaushal M <kaushal@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

3 files changed, 53 insertions, 8 deletions

diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c
index da239b51ec..a5314378c2 100644
--- a/cli/src/cli-rpc-ops.c
+++ b/cli/src/cli-rpc-ops.c
@@ -179,8 +179,10 @@ gf_cli_probe_cbk (struct rpc_req *req, struct iovec *iov,
         }
 
         if (global_state->mode & GLUSTER_MODE_XML) {
-                ret = cli_xml_output_str ("peerProbe", msg, rsp.op_ret,
-                                          rsp.op_errno, NULL);
+                ret = cli_xml_output_str (NULL,
+                                          (rsp.op_ret == -1)? NULL : msg,
+                                          rsp.op_ret, rsp.op_errno,
+                                          (rsp.op_ret == -1)? msg : NULL);
                 if (ret)
                         gf_log ("cli", GF_LOG_ERROR,
                                 "Error outputting to xml");
diff --git a/cli/src/cli-xml-output.c b/cli/src/cli-xml-output.c
index ffe32caccd..e439326623 100644
--- a/cli/src/cli-xml-output.c
+++ b/cli/src/cli-xml-output.c
@@ -149,13 +149,19 @@ cli_xml_output_str (char *op, char *str, int op_ret, int op_errno,
         if (ret)
                 goto out;
 
-        ret = xmlTextWriterWriteFormatElement (writer, (xmlChar *)"cliOp",
-                                               "%s", op);
-        XML_RET_CHECK_AND_GOTO (ret, out);
+        if (op) {
+                ret = xmlTextWriterWriteFormatElement (writer,
+                                                       (xmlChar *)"cliOp",
+                                                       "%s", op);
+                XML_RET_CHECK_AND_GOTO (ret, out);
+        }
 
-        ret = xmlTextWriterWriteFormatElement (writer, (xmlChar *)"output",
-                                               "%s", str);
-        XML_RET_CHECK_AND_GOTO (ret, out);
+        if (str) {
+                ret = xmlTextWriterWriteFormatElement (writer,
+                                                       (xmlChar *)"output",
+                                                       "%s", str);
+                XML_RET_CHECK_AND_GOTO (ret, out);
+        }
 
         ret = cli_end_xml_output (writer, buf);
 
diff --git a/tests/bugs/bug-879490.t b/tests/bugs/bug-879490.t
new file mode 100755
index 0000000000..5b9ae7bb9b
--- /dev/null
+++ b/tests/bugs/bug-879490.t
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+
+cleanup;
+
+## Start and create a volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume info;
+
+TEST $CLI volume create $V0 replica 2 stripe 2 $H0:$B0/${V0}{1,2,3,4,5,6,7,8};
+
+## Verify volume is is created
+EXPECT "$V0" volinfo_field $V0 'Volume Name';
+EXPECT 'Created' volinfo_field $V0 'Status';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+function peer_probe()
+{
+    $CLI peer probe a.b.c.d --xml | xmllint --format - | grep "<opErrstr>"
+}
+
+EXPECT "  <opErrstr>Probe returned with unknown errno 107</opErrstr>" peer_probe
+
+## Finish up
+TEST $CLI volume stop $V0;
+EXPECT 'Stopped' volinfo_field $V0 'Status';
+
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+cleanup;