Provision loadbalancer with terraform and custom scripts

terraform/scripts/update_lb_rules.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+set -e
+set -x
+
+export TOKEN=`jq '.token' -r ~/.scwrc`
+REGION="fr-par"
+ORGANIZATION_ID=`jq '.organization' -r ~/.scwrc`
+
+LB_IP=$1
+LB_TARGET_IPS=$2
+
+function create_rules() {
+    LB_ID=$1
+    declare -A RULES
+    RULES[http]=80
+    RULES[https]=443
+
+    for PROTOCOL in "${!RULES[@]}"; do
+        PORT=${RULES[$PROTOCOL]}
+        BACKEND_ID=$(http POST "https://api.scaleway.com/lb/v1/regions/$REGION/lbs/$LB_ID/backends" X-Auth-Token:$TOKEN name=lbb-$PROTOCOL forward_protocol=tcp forward_port=$PORT forward_port_algorithm=roundrobin sticky_sessions=none health_check:="{\"http_config\":{\"uri\":\"/\",\"method\":\"GET\",\"code\":404},\"check_delay\":1001,\"check_max_retries\":3,\"check_timeout\":3000,\"port\":$PORT}" server_ip:=$LB_TARGET_IPS --ignore-stdin | jq -r '.id')
+        http POST "https://api.scaleway.com/lb/v1/regions/$REGION/lbs/$LB_ID/frontends" X-Auth-Token:$TOKEN backend_id=$BACKEND_ID inbound_port=$PORT name=lbf-$PROTOCOL --ignore-stdin
+    done
+}
+
+function update_rules() {
+    LB_ID=$1
+    BACKENDS_IDS$2
+
+    for BACKEND_ID in $BACKENDS_IDS
+    do
+        http PUT "https://api.scaleway.com/lb/v1/regions/$REGION/backends/$BACKEND_ID/servers" X-Auth-Token:$TOKEN server_ip:="$LB_TARGET_IPS" --ignore-stdin
+    done
+}
+
+IP_ID=$(http GET "https://api.scaleway.com/lb/v1/regions/$REGION/ips" X-Auth-Token:$TOKEN | jq -r ".ips[] | select(.ip_address == \"$LB_IP\") | .id")
+echo "IP_ID: $IP_ID"
+
+LB_ID=$(http GET "https://api.scaleway.com/lb/v1/regions/$REGION/lbs" X-Auth-Token:$TOKEN | jq -r ".lbs[] | select(.ip[0].id == \"$IP_ID\") | .id")
+
+BACKENDS_IDS=$(http GET "https://api.scaleway.com/lb/v1/regions/$REGION/lbs/$LB_ID/backends" X-Auth-Token:$TOKEN | jq -r ".backends[] | .id")
+
+if [ -n "$BACKENDS_IDS" ]
+then
+    update_rules $LB_ID $BACKENDS_IDS
+else
+    create_rules $LB_ID
+fi