Dynmon test

Author: michelsciortino

src/services/pcn-dynmon/test/helpers.bash

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+function test_fail {
+  set +e
+  res=$($@)
+  local status=$?
+  set -e
+  if [ $status -ne 0 ]; then
+    return 0
+  else
+    return 1
+  fi
+}
+
+function create_veth {
+  for i in `seq 1 $1`;
+  do
+  	sudo ip netns add ns${i}
+  	sudo ip link add veth${i}_ type veth peer name veth${i}
+  	sudo ip link set veth${i}_ netns ns${i}
+  	sudo ip netns exec ns${i} ip link set dev veth${i}_ up
+  	sudo ip link set dev veth${i} up
+  	sudo ip netns exec ns${i} ifconfig veth${i}_ 10.0.0.${i}/24
+  done
+}
+
+function create_link {
+  for i in `seq 1 $1`;
+  do
+  	sudo ip link add link${i}1 type veth peer name link${i}2
+  	sudo ip link set dev link${i}1 up
+  	sudo ip link set dev link${i}2 up
+  done
+}
+
+function delete_veth {
+  for i in `seq 1 $1`;
+  do
+  	sudo ip link del veth${i}
+  	sudo ip netns del ns${i}
+  done
+}
+
+function delete_link {
+  for i in `seq 1 $1`;
+  do
+  	sudo ip link del link${i}1
+  done
+}

src/services/pcn-dynmon/test/test1.sh

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+#! /bin/bash
+
+# include helper.bash file: used to provide some common function across testing scripts
+source "${BASH_SOURCE%/*}/helpers.bash"
+
+# function cleanup: is invoked each time script exit (with or without errors)
+# please remember to cleanup all entities previously created:
+# namespaces, veth, cubes, ..
+function cleanup {
+  set +e
+  polycubectl dynmon del dm
+  delete_veth 2
+}
+trap cleanup EXIT
+
+# Enable verbose output
+set -x
+
+# Makes the script exit, at first error
+# Errors are thrown by commands returning not 0 value
+set -e
+
+DIR=$(dirname "$0")
+
+TYPE="TC"
+
+if [ -n "$1" ]; then
+  TYPE=$1
+fi
+
+# helper.bash function, creates namespaces and veth connected to them
+create_veth 2
+
+# create instance of service dynmon
+polycubectl dynmon add dm type=$TYPE
+polycubectl dm show
+
+# attaching the monitor to veth1
+polycubectl attach dm veth1
+
+
+
+# injecting a dataplane configuration
+curl -H "Content-Type: application/json" "localhost:9000/polycube/v1/dynmon/dm/dataplane" --upload-file $DIR/test_dataplane.json
+polycubectl dm show
+
+set +e
+ping_result=$(sudo ip netns exec ns1 ping 10.0.0.2 -c 2 -w 2 | grep -Po '[0-9]+(?= +packets transmitted)')
+set -e
+
+polycubectl dm metrics show
+polycubectl dm open-metrics show
+polycubectl dm metrics packets_total show
+
+metric_value=$(polycubectl dm metrics packets_total value show | sed -n "s/^\[\([0-9]*\)\]$/\1/p")
+
+if [ $metric_value -eq 0 ] || [ $metric_value -lt $ping_result ];
+then 
+    echo "Error: expected packets_value > 0 and >= $ping_result"
+    echo "packets_total: $packets_total"
+    exit 1
+else
+    echo "packets_total: $packets_total"
+    echo "TEST: OK"
+fi;

src/services/pcn-dynmon/test/test_dataplane.json

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+{
+    "name": "Packets counter probe",
+    "code": "\r\n BPF_ARRAY(PKT_COUNTER, uint64_t, 1);\r\n static __always_inline int handle_rx(struct CTXTYPE *ctx, struct pkt_metadata *md) {\r\n unsigned int key = 0;\r\n uint64_t *pkt_counter = PKT_COUNTER.lookup(&key);\r\n if (!pkt_counter){\r\n    /*counter map not found !? */\r\n    return RX_OK;\r\n }\r\n *pkt_counter+=1;\r\n pcn_log(ctx, LOG_TRACE, \"counter: %d\", *pkt_counter);\r\n return RX_OK;\r\n }",
+    "metrics": [
+        {
+            "name": "packets_total",
+            "map-name": "PKT_COUNTER",
+            "open-metrics-metadata": {
+                "help": "This metric represents the number of packets that has traveled trough this probe.",
+                "type": "counter",
+                "labels": []
+            }
+        }
+    ]
+}