Move SimpleLogger lib into app source tree

6 files changed, 353 insertions, 0 deletions

diff --git a/app/Core/Log/Base.php b/app/Core/Log/Base.php
new file mode 100644
index 00000000..3c3c8485
--- /dev/null
+++ b/app/Core/Log/Base.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace Kanboard\Core\Log;
+
+use Psr\Log\AbstractLogger;
+use Psr\Log\LogLevel;
+
+/**
+ * Base class for loggers
+ *
+ * @package Kanboard\Core\Log
+ * @author  Frédéric Guillot
+ */
+abstract class Base extends AbstractLogger
+{
+    /**
+     * Minimum log level for the logger
+     *
+     * @access private
+     * @var    string
+     */
+    private $level = LogLevel::DEBUG;
+
+    /**
+     * Set minimum log level
+     *
+     * @access public
+     * @param  string  $level
+     */
+    public function setLevel($level)
+    {
+        $this->level = $level;
+    }
+
+    /**
+     * Get minimum log level
+     *
+     * @access public
+     * @return string
+     */
+    public function getLevel()
+    {
+        return $this->level;
+    }
+
+    /**
+     * Dump to log a variable (by example an array)
+     *
+     * @param mixed $variable
+     */
+    public function dump($variable)
+    {
+        $this->log(LogLevel::DEBUG, var_export($variable, true));
+    }
+
+    /**
+     * Interpolates context values into the message placeholders.
+     *
+     * @access protected
+     * @param  string $message
+     * @param  array $context
+     * @return string
+     */
+    protected function interpolate($message, array $context = array())
+    {
+        // build a replacement array with braces around the context keys
+        $replace = array();
+
+        foreach ($context as $key => $val) {
+          $replace['{' . $key . '}'] = $val;
+        }
+
+        // interpolate replacement values into the message and return
+        return strtr($message, $replace);
+    }
+
+    /**
+     * Format log message
+     *
+     * @param  mixed  $level
+     * @param  string $message
+     * @param  array  $context
+     * @return string
+     */
+    protected function formatMessage($level, $message, array $context = array())
+    {
+        return '['.date('Y-m-d H:i:s').'] ['.$level.'] '.$this->interpolate($message, $context).PHP_EOL;
+    }
+}
diff --git a/app/Core/Log/File.php b/app/Core/Log/File.php
new file mode 100644
index 00000000..19260b3c
--- /dev/null
+++ b/app/Core/Log/File.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Kanboard\Core\Log;
+
+use RuntimeException;
+
+/**
+ * File Logger
+ *
+ * @package Kanboard\Core\Log
+ * @author  Frédéric Guillot
+ */
+class File extends Base
+{
+    /**
+     * Filename
+     *
+     * @access protected
+     * @var string
+     */
+    protected $filename = '';
+
+    /**
+     * Setup logger configuration
+     *
+     * @param string $filename Output file
+     */
+    public function __construct($filename)
+    {
+        $this->filename = $filename;
+    }
+
+    /**
+     * Logs with an arbitrary level.
+     *
+     * @param mixed  $level
+     * @param string $message
+     * @param array  $context
+     */
+    public function log($level, $message, array $context = array())
+    {
+        $line = $this->formatMessage($level, $message, $context);
+
+        if (file_put_contents($this->filename, $line, FILE_APPEND | LOCK_EX) === false) {
+            throw new RuntimeException('Unable to write to the log file.');
+        }
+    }
+}
diff --git a/app/Core/Log/Logger.php b/app/Core/Log/Logger.php
new file mode 100644
index 00000000..4155a04e
--- /dev/null
+++ b/app/Core/Log/Logger.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace Kanboard\Core\Log;
+
+use Psr\Log\AbstractLogger;
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
+
+/**
+ * Handler for multiple loggers
+ *
+ * @package Kanboard\Core\Log
+ * @author  Frédéric Guillot
+ */
+class Logger extends AbstractLogger implements LoggerAwareInterface
+{
+    /**
+     * Logger instances
+     *
+     * @access private
+     */
+    private $loggers = array();
+
+    /**
+     * Get level priority
+     *
+     * @param  mixed  $level
+     * @return integer
+     */
+    public function getLevelPriority($level)
+    {
+        switch ($level) {
+            case LogLevel::EMERGENCY:
+                return 600;
+            case LogLevel::ALERT:
+                return 550;
+            case LogLevel::CRITICAL:
+                return 500;
+            case LogLevel::ERROR:
+                return 400;
+            case LogLevel::WARNING:
+                return 300;
+            case LogLevel::NOTICE:
+                return 250;
+            case LogLevel::INFO:
+                return 200;
+        }
+
+        return 100;
+    }
+
+    /**
+     * Sets a logger instance on the object
+     *
+     * @param  LoggerInterface $logger
+     * @return null
+     */
+    public function setLogger(LoggerInterface $logger)
+    {
+        $this->loggers[] = $logger;
+    }
+
+    /**
+     * Proxy method to the real loggers
+     *
+     * @param  mixed   $level
+     * @param  string  $message
+     * @param  array   $context
+     * @return null
+     */
+    public function log($level, $message, array $context = array())
+    {
+        foreach ($this->loggers as $logger) {
+            if ($this->getLevelPriority($level) >= $this->getLevelPriority($logger->getLevel())) {
+                $logger->log($level, $message, $context);
+            }
+        }
+    }
+
+    /**
+     * Dump variables for debugging
+     *
+     * @param mixed $variable
+     */
+    public function dump($variable)
+    {
+        foreach ($this->loggers as $logger) {
+            if ($this->getLevelPriority(LogLevel::DEBUG) >= $this->getLevelPriority($logger->getLevel())) {
+                $logger->dump($variable);
+            }
+        }
+    }
+}
diff --git a/app/Core/Log/Stderr.php b/app/Core/Log/Stderr.php
new file mode 100644
index 00000000..fbe82a8c
--- /dev/null
+++ b/app/Core/Log/Stderr.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Kanboard\Core\Log;
+
+/**
+ * Stderr logger
+ *
+ * @package Kanboard\Core\Log
+ * @author  Frédéric Guillot
+ */
+class Stderr extends Base
+{
+    /**
+     * Logs with an arbitrary level.
+     *
+     * @param mixed  $level
+     * @param string $message
+     * @param array  $context
+     * @return null
+     */
+    public function log($level, $message, array $context = array())
+    {
+        file_put_contents('php://stderr', $this->formatMessage($level, $message, $context), FILE_APPEND);
+    }
+}
diff --git a/app/Core/Log/Stdout.php b/app/Core/Log/Stdout.php
new file mode 100644
index 00000000..99140801
--- /dev/null
+++ b/app/Core/Log/Stdout.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Kanboard\Core\Log;
+
+/**
+ * Stdout logger
+ *
+ * @package Kanboard\Core\Log
+ * @author  Frédéric Guillot
+ */
+class Stdout extends Base
+{
+    /**
+     * Logs with an arbitrary level.
+     *
+     * @param mixed  $level
+     * @param string $message
+     * @param array  $context
+     * @return null
+     */
+    public function log($level, $message, array $context = array())
+    {
+        file_put_contents('php://stdout', $this->formatMessage($level, $message, $context), FILE_APPEND);
+    }
+}
diff --git a/app/Core/Log/Syslog.php b/app/Core/Log/Syslog.php
new file mode 100644
index 00000000..3a354a88
--- /dev/null
+++ b/app/Core/Log/Syslog.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace Kanboard\Core\Log;
+
+use RuntimeException;
+use Psr\Log\LogLevel;
+
+/**
+ * Syslog Logger
+ *
+ * @package Kanboard\Core\Log
+ * @author  Frédéric Guillot
+ */
+class Syslog extends Base
+{
+    /**
+     * Setup Syslog configuration
+     *
+     * @param  string $ident    Application name
+     * @param  int    $facility See http://php.net/manual/en/function.openlog.php
+     */
+    public function __construct($ident = 'PHP', $facility = LOG_USER)
+    {
+        if (! openlog($ident, LOG_ODELAY | LOG_PID, $facility)) {
+            throw new RuntimeException('Unable to connect to syslog.');
+        }
+    }
+
+    /**
+     * Get syslog priority according to Psr\LogLevel
+     *
+     * @param  mixed  $level
+     * @return integer
+     */
+    public function getSyslogPriority($level)
+    {
+        switch ($level) {
+            case LogLevel::EMERGENCY:
+                return LOG_EMERG;
+            case LogLevel::ALERT:
+                return LOG_ALERT;
+            case LogLevel::CRITICAL:
+                return LOG_CRIT;
+            case LogLevel::ERROR:
+                return LOG_ERR;
+            case LogLevel::WARNING:
+                return LOG_WARNING;
+            case LogLevel::NOTICE:
+                return LOG_NOTICE;
+            case LogLevel::INFO:
+                return LOG_INFO;
+        }
+
+        return LOG_DEBUG;
+    }
+
+    /**
+     * Logs with an arbitrary level.
+     *
+     * @param  mixed   $level
+     * @param  string  $message
+     * @param  array   $context
+     * @return null
+     */
+    public function log($level, $message, array $context = array())
+    {
+        $syslogPriority = $this->getSyslogPriority($level);
+        $syslogMessage = $this->interpolate($message, $context);
+
+        syslog($syslogPriority, $syslogMessage);
+    }
+}