glusterd: make peerfile parsing more robust

Differential Revision: https://phabricator.intern.facebook.com/D5498639

Change-Id: I3184ed8f3dadbdcffd46f4ade855fa93131efa82
BUG: 1462969
Signed-off-by: Jeff Darcy <jdarcy@fb.com>
Reviewed-on: https://review.gluster.org/17885
Smoke: Gluster Build System <jenkins@build.gluster.org>
Tested-by: Jeff Darcy <jeff@pl.atyp.us>
Reviewed-by: Prashanth Pai <ppai@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/tests/basic/peer-parsing.t b/tests/basic/peer-parsing.t
new file mode 100644
index 00000000000..210ec8ccd90
--- /dev/null
+++ b/tests/basic/peer-parsing.t
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+
+PEER_DIR=/var/lib/glusterd/peers
+TEST mkdir -p $PEER_DIR
+
+declare -i HOST_NUM=100
+
+create_random_peer_files() {
+        for i in $(seq 0 9); do
+                local peer_uuid=$(uuidgen)
+                # The rules for quoting and variable substitution in
+                # here documents would force this to be even less
+                # readable that way.
+                (
+                        echo "state=1"
+                        echo "uuid=$peer_uuid"
+                        echo "hostname=127.0.0.$HOST_NUM"
+                ) > $PEER_DIR/$peer_uuid
+                HOST_NUM+=1
+        done
+}
+
+create_non_peer_file() {
+        echo "random stuff" > $PEER_DIR/not_a_peer_file
+}
+
+create_malformed_peer_file() {
+        echo "more random stuff" > $PEER_DIR/$(uuidgen)
+}
+
+# We create lots of files, in batches, to ensure that our bogus ones are
+# properly interspersed with the valid ones.
+
+TEST create_random_peer_files
+TEST create_non_peer_file
+TEST create_random_peer_files
+TEST create_malformed_peer_file
+TEST create_random_peer_files
+
+# There should be 30 peers, not counting the two bogus files.
+TEST glusterd
+N_PEERS=$($CLI peer status | grep ^Uuid: | wc -l)
+TEST [ "$N_PEERS" = "30" ]
+
+# For extra credit, check the logs for messages about bogus files.
+
+cleanup
+
+
+