Configuration module

Author(s): Arsen Kostenko.

This is the initial system-wide configuration storage module. All the configurations stored here are represented by command-line arguments or corresponding terms, depending on the server launching style.

Usage and interface

Library usage:
:- use_module(library(dht_config)).
Exports:
- Predicates:
  hash_power/1, dht_set_hash_power/1, dht_s2c_port/1, dht_set_s2c_port/1, dht_s2c_threads/1, dht_set_s2c_threads/1, dht_s2s_port/1, dht_set_s2s_port/1, dht_s2s_threads/1, dht_set_s2s_threads/1, dht_join_host/1, dht_set_join_host/1, dht_server_id/1, dht_set_server_id/1, dht_server_host/1, dht_set_server_host/1.
Imports:
- Packages:
  prelude, nonpure, assertions, regtypes, isomodes.

Documentation on exports

PREDICATE

hash_power/1:

Get/check power of currently running DHT. Hash function has (2**m) values, therefore hash_power/1 returns/checks m.

Usage 1:hash_power(Power)

Bound Power to value of currently running DHT power.

The following properties should hold at call time:
(term_typing:var/1)Power is a free variable.
The following properties should hold upon exit:
(basic_props:int/1)Power is an integer.

Usage 2:hash_power(Power)

Check whether Power is equal to power of the currently running DHT.

The following properties should hold at call time:
(basic_props:int/1)Power is an integer.

PREDICATE

dht_set_hash_power/1:

Set initial power of hash function.

Usage:dht_set_hash_power(Power)

Set m for (2**m) formula.

The following properties should hold at call time:
(basic_props:int/1)Power is an integer.

PREDICATE

dht_s2c_port/1:

Get/check server to client communication port.

Usage 1:dht_s2c_port(Port)

Set value of Port to currently used port number for server-to-client communication.

The following properties should hold at call time:
(term_typing:var/1)Port is a free variable.
The following properties should hold upon exit:
(basic_props:int/1)Port is an integer.

Usage 2:dht_s2c_port(Port)

Check whether value of Port is equal to currently used port number for server-to-client communication.