[DMAAP-BC] Avoid Creating duplicate DR Publisher, Subscriber

Issue-ID: DCAEGEN2-2861
Signed-off-by: ajay_dp001 <ajay.deep.singh@est.tech>
Change-Id: I3c17ce0bc2da1b4443e729c9888a23b503480ff8

2 files changed, 52 insertions, 1 deletions

diff --git a/dbc-client/misc/dbc-client b/dbc-client/misc/dbc-client
index 7247e01..2436e9a 100644
--- a/dbc-client/misc/dbc-client
+++ b/dbc-client/misc/dbc-client
@@ -28,6 +28,7 @@ export PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin
 RESP_CACHE=${RESP_CACHE:-''}
 RESP=${RESP:-'/dev/null'}
 APP_ROOT=${APP_ROOT:-/opt/app/dbc-client}
+IF_PUB_SUB_EXIST=${IF_PUB_SUB_EXIST:-false}
 CONFIGMAP_ROOT=${CONFIGMAP_ROOT:-/opt/app/config}
 
 PORT=${PORT:-8443}
@@ -91,6 +92,14 @@ function do_http_post() {
   while true; do
     if [ "$2" != "feeds" -a "$2" != "topics" ]; then
       req_body=$(cat "${1}" | envsubst)
+      if [ -n "$RESP_CACHE" ] && [ "${2}" = "dr_pubs" -o "${2}" = "dr_subs" ]; then
+        IF_PUB_SUB_EXIST=false
+        check_pub_sub "${2}" "${req_body}" "${RESP}"
+        if [ "${IF_PUB_SUB_EXIST}" = true ]; then
+          echo "DR Publisher or Subscriber already exist.."
+          break
+        fi
+      fi
       rc=$(xcurl -o "$RESP" -d "$req_body" "${URL}${2}")
       if [ "$rc" = "200" -o "$rc" = "201" -o "$rc" = "409" ]; then
         echo "Http Post request is successful with response code=$rc"
@@ -108,5 +117,47 @@ function do_http_post() {
   done
 }
 
+function check_pub_sub() {
+  #Parameters:
+  #${1} Param - String representing dir either dr_pubs or dr_subs
+  #${2} Param - Request details (Dr Publisher/Subscriber creation input details) containing feedName, dr-userName, dr-Password, dr-LocationName
+  #${3} Param - String representing RESP_CACHE Env to '/opt/app/config/cache' or '/dev/null'
+  feed_config_resp="$RESP_CACHE"/"feedConfig-$(echo "${3//[!0-9]/}")-resp.json"
+  if [ -f "${feed_config_resp}" ]; then
+    echo "Checking if pub or sub exist.."
+    val=${1#*_}
+    dr_usr=$(echo "${2}" | jq -r '.username')
+    dr_pwd=$(echo "${2}" | jq -r '.userpwd')
+    pub_sub_cnt=$(jq ".${val} | length" "${feed_config_resp}")
+    local i=0
+    while [ "$i" -lt "$pub_sub_cnt" ]; do
+      _dr_usr=$(jq -r ".${val}[$i].username" "${feed_config_resp}")
+      _dr_pwd=$(jq -r ".${val}[$i].userpwd" "${feed_config_resp}")
+      if [ "${dr_usr}" = "${_dr_usr}" -a "${dr_pwd}" = "${_dr_pwd}" ]; then
+        if [ "${1}" = "dr_pubs" ]; then
+          echo "Publisher exist with username: ${dr_usr}, password: ${dr_pwd}"
+          echo "$(jq -c ".${val}[$i]" "${feed_config_resp}")" >"${3}"
+          IF_PUB_SUB_EXIST=true
+          break
+        elif [ "${1}" = "dr_subs" ]; then
+          dr_loc=$(echo "${2}" | jq -r '.dcaeLocationName')
+          _dr_loc=$(jq -r ".${val}[$i].dcaeLocationName" "${feed_config_resp}")
+          dr_deliveryURL=$(echo "${2}" | jq -r '.deliveryURL')
+          _dr_deliveryURL=$(jq -r ".${val}[$i].deliveryURL" "${feed_config_resp}")
+          if [ "${dr_loc}" = "${_dr_loc}" -a "${dr_deliveryURL}" = "${_dr_deliveryURL}" ]; then
+            echo "Subscriber exist with username: ${dr_usr}, password: ${dr_pwd}, dcaeLocationName: ${dr_loc}, deliveryURL: ${dr_deliveryURL}"
+            echo "$(jq -c ".${val}[$i]" "${feed_config_resp}")" >"${3}"
+            IF_PUB_SUB_EXIST=true
+            break
+          fi
+        fi
+      fi
+      i=$((i + 1))
+    done
+  else
+    echo "Feed configuration doesn't exist."
+  fi
+}
+
 init_config
 init_dbc_provisioning
diff --git a/dbc-client/src/main/resources/Dockerfile b/dbc-client/src/main/resources/Dockerfile
index 831d4f2..e63ce9d 100644
--- a/dbc-client/src/main/resources/Dockerfile
+++ b/dbc-client/src/main/resources/Dockerfile
@@ -34,7 +34,7 @@ RUN mkdir -p /usr/local/share/ca-certificates && \
 RUN update-ca-certificates
 
 # Install curl & openssl
-RUN apk add --no-cache curl openssl gettext
+RUN apk add --no-cache curl openssl gettext jq
 
 RUN mkdir -p /opt/app/osaaf/local && \
     chmod +x /opt/app/dbc-client/bin/* && \