google-cloud-ops-agent logging

logger.php

<?php
$formatter = new \Monolog\Formatter\JsonFormatter();
$handler = new \Monolog\Handler\StreamHandler('/www/logs/agent.log');
$handler->setFormatter($formatter);
$logger = new \Monolog\Logger('agent', [$handler]);
$handler->pushProcessor(function (array $record) {
    return [
        'timestamp' => ['seconds' => time(), 'nanos' => 0],
        'logging.googleapis.com/severity' => 'ALERT',
        'logging.googleapis.com/labels' => ['foo' => 'bar'],
        'logging.googleapis.com/sourceLocation' => [
            'file' => '/devil/entity.php',
            'line' => 666,
            'function' => 'die',
        ],
        'lorem' => 'ipsum',
        'record' => $record,
    ];
});

$logger->alert('WORKING EXAMPLE');

result.log

{
  "insertId": "xyz",
  "jsonPayload": {
    "record": {
      "channel": "agent",
      "level": 550,
      "context": [],
      "message": "WORKING EXAMPLE",
      "datetime": "2021-10-06T15:08:37.381344+02:00",
      "extra": [],
      "level_name": "ALERT"
    },
    "lorem": "ipsum"
  },
  "resource": {
    "type": "gce_instance",
    "labels": {
      "zone": "europe-xyz",
      "instance_id": "123",
      "project_id": "321"
    }
  },
  "timestamp": "2021-10-06T13:08:37Z",
  "severity": "ALERT",
  "labels": {
    "foo": "bar"
  },
  "logName": "projects/321/logs/agent-test",
  "sourceLocation": {
    "file": "/devil/entity.php",
    "line": "666",
    "function": "die"
  },
  "receiveTimestamp": "2021-10-06T13:08:38.300034330Z"
}