daniel-platform / discovery

Returns the requested value for base64 encoded JSON data in an environmental variable

Discovery

Prints out the requested value from a base64 encoded JSON data structure that's stored in an environmental variable.

Usage

discovery ENV_VAR_NAME <type>.<name>.var.name

Example

PLATFORM_RELATIONSHIPS: A base64-encoded JSON object whose keys are the relationship name and the values are arrays of relationship endpoint definitions.

Given the following PLATFORM_RELATIONSHIPS:

{
    "redis": [
        {
            "service": "rediscache",
            "ip": "1.2.3.4",
            "cluster": "abcdefg123",
            "host": "redis.internal",
            "rel": "redis",
            "scheme": "redis",
            "port": 6379
        }
    ],
    "solr": [
        {
            "service": "solr",
            "ip": "1.2.3.4",
            "cluster": "abcdefg123",
            "host": "solr.internal",
            "rel": "main",
            "path": "solr/mainindex",
            "scheme": "solr",
            "port": 8080
        }
    ],
    "database": [
        {
            "username": "user",
            "scheme": "mysql",
            "service": "mysql",
            "ip": "1.2.3.4",
            "cluster": "abcdefg123",
            "host": "database.internal",
            "rel": "mysql",
            "path": "main",
            "query": {
                "is_master": true
            },
            "password": "",
            "port": 3306
        }
    ]
}

You can obtain the username from the database service named mysql using the following:

discovery PLATFORM_RELATIONSHIPS database.mysql.username