PHP code example of pluggit / feature-balancer

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

pluggit / feature-balancer example snippets

$balancer = (new BalancerBuilder())
    ->withLogger($logger, LogLevel::INFO)
    ->withMonitor($monitor, "my_app.feature_balanced")
    ->create([
        "home_banner" => [
            "do_not_show"   => 20,
            "amazing_offer" => 80,
        ],
        "after_update_email" => [
            "normal"        => 60,
            "special_offer" => 30,
            "do_not_send"   => 10,
        ]
    ]);

/**
 * Random Non-deterministic balance
 * - 20% change to get "do_not_show", 80% chance to get "amazing_offer"
 */
$path = $balancer->get("home_banner");

/**
 * Deterministic balance, given a configuration and a valid seed, 
 * you'll always get the same result
 *
 * Valid seeds are non-empty strings and unsigned numbers
 */
$path = $balancer->get("after_update_email", 78549612);
$path = $balancer->get("after_update_email", -4.75);
$path = $balancer->get("after_update_email", "[email protected]");

$balancer = (new BalancerBuilder())->create();

// Add a logger when building the balancer
$balancer = (new BalancerBuilder())->->withLogger($logger, LogLevel::DEBUG)->create($config);

/** 
 * This will log: "Feature path returned from the balancer: home_banner -> amazing_offer"
 * Plus some context information:
 * - feature
 * - path
 * - seed
 */
$balancer->get("home_banner", 9874562);

// Add a monitor when building the balancer
$balancer = (new BalancerBuilder())->->withMonitor($monitor, "balanced_feature")->create($config);

/** 
 * This will increment the metric: "balanced_feature", plus some tags
 * - feature
 * - path
 * - seed: true/false
 */
$balancer->get("home_banner", 9874562);

// Add a monitor when building the balancer
$balancer = (new BalancerBuilder())->->withoutExceptions()->create($config);

/** 
 * Requesting an unknown feature will return an empty string -> ""
 */
$balancer->get("unknown_feature");

$balancer->add("my_super_feature",  [
    "do_not_show"   => 20,
    "amazing_offer" => 80,
]);

$balancer->add("my_super_feature",  [
    "do_not_show"   => 0,
    "amazing_offer" => 100,
]);

$balancer->add("my_super_feature",  [
    "amazing_offer" => 100,
]);

// No paths defined
$balancer->add("my_super_feature",  []);

// Percentages sum 90
$balancer->add("my_super_feature",  [
    "do_not_show"   => 90,
]);

// Percentages sum 140
$balancer->add("my_super_feature",  [
    "do_not_show"   => 60,
    "amazing_offer" => 80,
]);

// Percentages is not a valid unsigned integer
$balancer->add("my_super_feature",  [
    "do_not_show"   => "60",
    "amazing_offer" => 40,
]);

$path = $balancer->get("home_banner");

$path = $balancer->get("after_update_email", 78549612);
$path = $balancer->get("after_update_email", -23.54);
$path = $balancer->get("after_update_email", "[email protected]");