Provide wrapper functions for issuing k8splugin API calls

In plugin.sh and plugin_edgex.sh test scenarios, there are
executed many curl calls to API endpoint. As curl's default
behavior for handling 4xx and 5xx status code is not perfect,
wrapper functions have been created to easily ensure correctness
of issued API call.

Issue-ID: MULTICLOUD-686

Signed-off-by: Konrad Bańka <k.banka@samsung.com>
Change-Id: I0c6dd5e4f896972245a6fa6c8c2a10d8df8ec406

diff --git a/kud/tests/_functions.sh b/kud/tests/_functions.sh
index a885bc5..483aed5 100755 (executable)
--- a/kud/tests/_functions.sh
+++ b/kud/tests/_functions.sh
@@ -33,6 +33,44 @@ function get_ovn_central_address {
     echo "$(echo ${ansible_ifconfig#*>>} | tr '\n' ':')6641"
 }
 
+function call_api {
+    #Runs curl with passed flags and provides
+    #additional error handling and debug information
+
+    #Function outputs server response body
+    #and performs validation of http_code
+
+    local status
+    local curl_response_file="$(mktemp -p /tmp)"
+    local curl_common_flags=(-s -w "%{http_code}" -o "${curl_response_file}")
+    local command=(curl "${curl_common_flags[@]}" "$@")
+
+    echo "[INFO] Running '${command[@]}'" >&2
+    if ! status="$("${command[@]}")"; then
+        echo "[ERROR] Internal curl error! '$status'" >&2
+        cat "${curl_response_file}"
+        rm "${curl_response_file}"
+        return 2
+    else
+        echo "[INFO] Server replied with status: ${status}" >&2
+        cat "${curl_response_file}"
+        rm "${curl_response_file}"
+        if [[ "${status:0:1}" =~ [45] ]]; then
+            return 1
+        else
+            return 0
+        fi
+    fi
+}
+
+function delete_resource {
+    #Issues DELETE http call to provided endpoint
+    #and further validates by following GET request
+
+    call_api -X DELETE "$1"
+    ! call_api -X GET "$1" >/dev/null
+}
+
 # init_network() - This function creates the OVN resouces required by the test
 function init_network {
     local fname=$1