add admin menu and confirable format string

README.md

@@ -1,5 +1,5 @@
-# Drupal Watchdog stdout
+# Drupal Logger stdout
 
-Log [Drupal Watchdog][1] messages to `php://stdout` or `php://stderr` for better log handling with Docker.
+Write [Drupal Logging API][1] messages to `php://stdout` or `php://stderr` for better log handling with Docker.
 
-[1]: https://api.drupal.org/api/drupal/includes!bootstrap.inc/function/watchdog/7
+[1]: https://www.drupal.org/node/2595985

composer.json

@@ -0,0 +1,11 @@
+{
+    "name": "drupal/log_stdout",
+    "description": "This module provides an hook for Drupal Watchdog that directs log messages to php://stdout or php://stderr for better log handling with Docker.",
+    "type": "drupal-module",
+    "homepage": "https://www.drupal.org/project/log_stdout",
+    "support": {
+        "issues": "https://www.drupal.org/project/issues/log_stdout",
+        "irc": "irc://irc.freenode.org/drupal-support"
+    },
+    "license": "GPL-2.0+"
+}

config/install/log_stdout.settings.yml

@@ -0,0 +1 @@
+format: '!base_url|!timestamp|!type|!ip|!request_uri|!referer|!uid|!link|!message'

config/schema/log_stdout.schema.yml

@@ -0,0 +1,9 @@
+# Schema for the configuration files of the syslog module.
+
+syslog.settings:
+  type: config_object
+  label: 'Log stdout settings'
+  mapping:
+    format:
+      type: string
+      label: 'Format'

log_stdout.info.yml

@@ -0,0 +1,11 @@
+name: log_stdout
+description: Log watchdog messages to stdout
+package: Logging
+type: module
+# core: 8.x
+
+# Information added by Drupal.org packaging script on 2017-08-08
+version: '8.x-1.1'
+core: '8.x'
+project: 'log_stdout'
+datestamp: 1502196546

log_stdout.links.menu.yml

@@ -0,0 +1,6 @@
+log_stdout.settings:
+  title: 'Log Stdout module settings'
+  description: 'Log Stdout module configuration'
+  parent: system.admin_config_development
+  route_name: log_stdout.settings
+  weight: 100

log_stdout.routing.yml

@@ -0,0 +1,7 @@
+log_stdout.settings:
+  path: '/admin/config/development/log_stdout'
+  defaults:
+    _form: 'Drupal\log_stdout\Form\LogStdoutConfigForm'
+    _title: 'Log Stdout configuration'
+  requirements:
+    _permission: 'administer site configuration'

log_stdout.services.yml

@@ -0,0 +1,6 @@
+services:
+  logger.stdout:
+    class: Drupal\log_stdout\Logger\Stdout
+    arguments: ['@logger.log_message_parser']
+    tags:
+      - { name: logger }

src/Form/LogStdoutConfigForm.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Drupal\log_stdout\Form;
+
+use Drupal\Core\Form\ConfigFormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+class LogStdoutConfigForm extends ConfigFormBase {
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'log_stdout_config_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    // Form constructor.
+    $form = parent::buildForm($form, $form_state);
+    // Default settings.
+    $config = $this->config('log_stdout.settings');
+
+    $form['format'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Log format'),
+      '#default_value' => $config->get('format'),
+      '#description'   => t('Specify the format of the log entry. Available variables are: <dl><dt><code>!base_url</code></dt><dd>Base URL of the site.</dd><dt><code>!timestamp</code></dt><dd>Unix timestamp of the log entry.</dd><dt><code>!type</code></dt><dd>The category to which this message belongs.</dd><dt><code>!ip</code></dt><dd>IP address of the user triggering the message.</dd><dt><code>!request_uri</code></dt><dd>The requested URI.</dd><dt><code>!referer</code></dt><dd>HTTP Referer if available.</dd><dt><code>!severity</code></dt><dd>The severity level of the event; ranges from 0 (Emergency) to 7 (Debug).</dd><dt><code>!uid</code></dt><dd>User ID.</dd><dt><code>!link</code></dt><dd>A link to associate with the message.</dd><dt><code>!message</code></dt><dd>The message to store in the log.</dd></dl>'),
+    ];
+
+    return $form;
+  }
+
+    /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $config = $this->config('log_stdout.settings');
+
+    $config->set('format', $form_state->getValue('format'));
+    $config->save();
+
+    return parent::submitForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEditableConfigNames() {
+    return [
+      'log_stdout.settings',
+    ];
+  }
+}
+
+?>

src/Logger/Stdout.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace Drupal\log_stdout\Logger;
+
+use Drupal\Core\Logger\RfcLoggerTrait;
+use Psr\Log\LoggerInterface;
+use Drupal\Core\Logger\RfcLogLevel;
+use Drupal\Core\Session\AccountProxy;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Logger\LogMessageParserInterface;
+
+class Stdout implements LoggerInterface {
+  use RfcLoggerTrait;
+
+  /**
+   * The message's placeholders parser.
+   *
+   * @var \Drupal\Core\Logger\LogMessageParserInterface
+   */
+  protected $parser;
+
+  /**
+   * Constructs a Stdout object.
+   *
+   * @param \Drupal\Core\Logger\LogMessageParserInterface $parser
+   *   The parser to use when extracting message variables.
+   */
+  public function __construct(LogMessageParserInterface $parser) {
+    $this->parser = $parser;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function log($level, $message, array $context = []) {
+    $config = \Drupal::config('log_stdout.settings');
+
+    if ($level <= RfcLogLevel::WARNING) {
+      $output = fopen('php://stderr', 'w');
+    }
+    else {
+      $output = fopen('php://stdout', 'w');
+    }
+    $severity = strtoupper(RfcLogLevel::getLevels()[$level]);
+    $username = '';
+    if (isset($context['user']) && !empty($context['user'])) {
+      $username = $context['user']->getAccountName();
+    }
+    if (empty($username)) {
+      $username = 'anonymous';
+    }
+
+    $variables = $this->parser->parseMessagePlaceholders($message, $context);
+    $input_message = strip_tags(t($message, $variables));
+
+    /* context
+    [channel] => cron
+    [link] =>
+    [uid] => 0
+    [request_uri] => http://oci.rokebi.com/cron/v5HeY2s06H-VAp14afM9cWWej0S9AwUpmLjJ7KYfzZEnJ691-ZkJVDKca5wU0QsxQyrCyz0b-g
+    [referer] =>
+    [ip] => 10.244.1.128
+    [timestamp] => 1597300569
+    */
+
+    $message = t( $config->get('format'), [
+      '@timestamp'   => $context['timestamp'],
+      '@severity'    => $severity,
+      '@type'        => $context['channel'],
+      '@message'     => $input_message,
+      '@uid'         => $context['uid'],
+      '@request_uri' => $context['request_uri'],
+      '@referer' => $context['referer'],
+      '@ip' => $context['ip'],
+      '@link' => $context['link'],
+      '@date' => date('Y-m-d\TH:i:s', $context['timestamp']),
+    ]);
+
+    fwrite($output, $message . "\r\n");
+    fclose($output);
+  }
+
+}