Wobserver

v0.1.8

Wobserver v0.1.8 Wobserver.Util.Node.Discovery View Source

Helps discovering other nodes to connect to.

The method used can be set in the config file by setting:

config :wobserver,
  discovery: :dns,

The following methods can be used: (default: :none)

  • :none, just returns the local node.
  • :dns, use DNS to search for other nodes. The option discovery_search needs to be set to filter entries.
  • :custom, a function as String.

Example config

No discovery: (is default)

config :wobserver,
  port: 80,
  discovery: :none

Using dns as discovery service:

config :wobserver,
  port: 80,
  discovery: :dns,
  discovery_search: "google.nl"

Using a custom function:

config :wobserver,
  port: 80,
  discovery: :custom,
  discovery_search: &MyApp.CustomDiscovery.discover/0

Using a anonymous function:

config :wobserver,
  port: 80,
  discovery: :custom,
  discovery_search: fn -> [] end

Link to this section Summary

Functions

discover()

Discovers other nodes to connect to

find(search)

Searches for a node in the discovered nodes

local()

Retuns the local node

Link to this section Functions

Link to this function discover() View Source 
discover() :: [Wobserver.Util.Node.Remote.t]

Discovers other nodes to connect to.

The method used can be set in the config file by setting:

config :wobserver,
  discovery: :dns,

The following methods can be used: (default: :none)

  • :none, just returns the local node.
  • :dns, use DNS to search for other nodes. The option discovery_search needs to be set to filter entries.
  • :custom, a function as String.

Example config

No discovery: (is default)

config :wobserver,
  discovery: :none

Using dns:

config :wobserver,
  discovery: :dns,
  discovery_search: "google.nl"

Using a custom function:

config :wobserver,
  discovery: :custom,
  discovery_search: "&MyApp.CustomDiscovery.discover/0"
Link to this function find(search) View Source 
find(String.t) ::
  :local |
  :unknown |
  {:remote, Wobserver.Util.Node.Remote.t}

Searches for a node in the discovered nodes.

The search will be used to filter through names, hosts and host:port combinations.

The special values for search are:

  • local, will always return the local node.
Link to this function local() View Source

Retuns the local node.