Publish a JSON payload into a local RabbitMQ HTTP API

rabbit_publish.sh

#!/bin/bash

# Publish JSON payloads into a RabbitMQ HTTP API with curl and jq.
# Usage: rabbit_publish.sh exchange_name '{ "data": "my json payload" }'
#
# To install prequisites on macOS:
# brew install rabbitmq jq
# rabbitmq-plugins enable rabbitmq_management

if [ $# -ne 2 ]; then
  echo "Usage: $0 <exchange> <payload>"
  exit 1
fi

EXCHANGE=$1
API_URL="http://localhost:15672/api/exchanges/%2f/$EXCHANGE/publish"
PAYLOAD=$(echo $2 | jq -R)

curl -u guest:guest -X POST -H 'Content-Type: application/json' -d "$(cat << EOF
{
  "properties": {
    "content_type": "application/json",
    "headers": {}
  },
  "routing_key": "",
  "payload": $PAYLOAD,
  "payload_encoding": "string"
}
EOF
)" $API_URL