ConnectionProvider Module

# ConnectionProvider Module Introduction

The ConnectionProvider module provides an API for providing pluggable network connections objects to Qore. This module can also be used to provide URL strings from identifiers from registered connection providers as well.

To use this module, use `"%requires ConnectionProvider"` in your code.

All the public symbols in the module are defined in the ConnectionProvider namespace.

Class:

- AbstractConnection

Hashdecls:

- ConfigInfo
- ConnectionInfo
- PingInfo

Functions:

- get_connection()
- get_connection_hash()
- get_connections()
- get_connection_url()

## Connection Provider Modules

This module uses the `"QORE_CONNECTION_PROVIDERS"` environment variable to load connection provider modules. Each connection provider module must provide two public functions with the following signatures:

# returns a ConnectionProvider::AbstractConnection object for the given identifier or throws an exception
public ConnectionProvider::AbstractConnection sub get_mod_connection(string str) {}
# returns a hash keyed by connection identifiers with values as ConnectionProvider::AbstractConnection objects for all connections known to the connection provider
public *hash sub get_mod_connections() {}

Connection provider modules declared in the `"QORE_CONNECTION_PROVIDERS"` environment variable must be separated by the platform-specific PathSep character as in the following examples:

Unix Example

      export QORE_CONNECTION_PROVIDERS=MyConnectionProvider:OtherConnectionProvider

Windows CMD.EXE Example

      set QORE_CONNECTION_PROVIDERS=MyConnectionProvider;OtherConnectionProvider

Windows PowerShell Example

      $env:QORE_CONNECTION_PROVIDERS="MyConnectionProvider;OtherConnectionProvider"

# Release Notes

## ConnectionProvider 1.0

- the initial version of the ConnectionProvider module