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+#!/bin/bash
+# ================================================================================
+# Copyright (c) 2019 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END=========================================================
+
+# Push service registrations and key-value pairs to consul
+#
+# Environment variables control the consul address used:
+# -- CONSUL_PROTO: The protocol (http or https) used to access consul. DEFAULT: http
+# -- CONSUL_HOST: The Consul host address. DEFAULT: consul
+# -- CONSUL_PORT: The Consul API port. DEFAULT: 8500
+#
+# Command line options
+# --service name|address|port : Register a service with name 'name', address 'address', and port 'port'.
+# --key keyname|filepath: Register a key-value pair with key 'keyname' and the contents of a file at 'filepath' as its value
+# A command can include multiple instances of each option.
+
+CONSUL_ADDR=${CONSUL_PROTO:-http}://${CONSUL_HOST:-consul}:${CONSUL_PORT:-8500}
+KV_URL=${CONSUL_ADDR}/v1/kv
+REG_URL=${CONSUL_ADDR}/v1/catalog/register
+
+# Register a service into Consul so that it can be discovered via the Consul service discovery API
+# $1: Name under which service is registered
+# $2: Address (typically DNS name, but can be IP) of the service
+# $3: Port used by the service
+function register_service {
+ service="{\"Node\": \"dcae\", \"Address\": \"$2\", \"Service\": {\"Service\": \"$1\", \"Address\": \"$2\", \"Port\": $3}}"
+ echo $service
+ curl -v -X PUT --data-binary "${service}" -H 'Content-Type: application/json' $REG_URL
+}
+
+# Store the contents of a file into Consul KV store
+# $1: Key under which content is stored
+# $2: Path to file whose content will be the value associated with the key
+function put_key {
+ curl -v -X PUT --data-binary @$2 -H 'Content-Type: application/json' ${KV_URL}/$1
+}
+
+set -x
+
+# Check Consul readiness
+# The readiness container waits for a "consul-server" container to be ready,
+# but this isn't always enough. We need the Consul API to be up and for
+# the cluster to be formed, otherwise our Consul accesses might fail.
+# Wait for Consul API to come up
+until curl ${CONSUL_ADDR}/v1/agent/services
+do
+ echo Waiting for Consul API
+ sleep 60
+done
+# Wait for a leader to be elected
+until [[ "$(curl -Ss {$CONSUL_ADDR}/v1/status/leader)" != '""' ]]
+do
+ echo Waiting for leader
+ sleep 30
+done
+
+while (( "$#" ))
+do
+ case $1 in
+
+ "--service")
+ # ${2//|/ } turns all of the | characters in argument 2 into spaces
+ # () uses the space delimited string to initialize an array
+ # this turns an argument like inventory-api|inventory.onap|8080 into
+ # a three-element array with elements "inventory-api", "inventory.onap", and "8080"
+ s=(${2//|/ })
+ register_service ${s[@]}
+ shift 2;
+ ;;
+ "--key")
+ # See above for explanation of (${2//|/ })
+ kv=(${2//|/ })
+ put_key ${kv[@]}
+ shift 2;
+ ;;
+ *)
+ echo "ignoring $1"
+ shift
+ ;;
+ esac
+done