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Diffstat (limited to 'consul-loader-container/consul_store.sh')
-rwxr-xr-x | consul-loader-container/consul_store.sh | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/consul-loader-container/consul_store.sh b/consul-loader-container/consul_store.sh new file mode 100755 index 0000000..4e64fc3 --- /dev/null +++ b/consul-loader-container/consul_store.sh @@ -0,0 +1,94 @@ +#!/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 |