PHP code example of whitemerry / phpkin

1. Go to this page and download the library: Download whitemerry/phpkin library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

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

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

whitemerry / phpkin example snippets


$endpoint = new Endpoint(
    'My application', // Application name
    '127.0.0.1', // Current application IP address
    '80' // Current application port (default 80)
);


$logger = new SimpleHttpLogger([
    'host' => 'http://192.168.33.11:9411' // Zipkin's API host with schema (http://) and without trailing slash
]);


$tracer = new Tracer(
    'http://localhost/login', // Trace name
    $endpoint, // Your application meta-information
    $logger // Logger used to store/send traces
);
$tracer->setProfile(Tracer::FRONTEND);


$traceId = null;
if (!empty($_SERVER['HTTP_X_B3_TRACEID'])) {
    $traceId = new TraceIdentifier($_SERVER['HTTP_X_B3_TRACEID']);
}

$traceSpanId = null;
if (!empty($_SERVER['HTTP_X_B3_SPANID'])) {
    $traceSpanId = new SpanIdentifier($_SERVER['HTTP_X_B3_SPANID']);
}

$isSampled = null;
if (!empty($_SERVER['HTTP_X_B3_SAMPLED'])) {
    $isSampled = (bool) $_SERVER['HTTP_X_B3_SAMPLED'];
}

$tracer = new Tracer(
    'http://localhost/login',
    $endpoint,
    $logger,
    $sampled,
    $traceId,
    $traceSpanId
);
$tracer->setProfile(Tracer::BACKEND);


$tracer->trace();


// Before request - read current timestamp in zipkin format
$requestStartTimestamp = zipkin_timestamp();
$spanIdentifier = new SpanIdentifier();

/* 
...
Request logic
Remember, you need to add B3 headers to your request:
X-B3-TraceId = TracerInfo::getTraceId();
X-B3-SpanId = $spanIdentifier;
X-B3-Sampled = TracerInfo::isSampled();
*/

$endpoint = new Endpoint(
    'Accounts microservice', // Name of service you're connecting with
    '127.0.1.1', // This service Ip
    '8000' // And port
);

$annotationBlock = new AnnotationBlock(
    $endpoint,
    $requestStartTimestamp
);

$span = new Span(
    $spanIdentifier,
    'Authorize user',
    $annotationBlock
);


$tracer->addSpan($span);


$tracer = new Tracer(...); // Your tracer instance
TracerProxy::init($tracer);


TracerProxy::addSpan($span);
TracerProxy::trace();


TracerInfo::getTraceId(); // TraceId - X-B3-TraceId
TracerInfo::getTraceSpanId(); // ParentId - X-B3-ParentId
TracerInfo::isSampled(); // Sampled - X-B3-Sampled