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Add some simple retry logic in PHP for MySQL connection errors #48

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Merged
merged 1 commit into from
Jan 22, 2015
Merged

Add some simple retry logic in PHP for MySQL connection errors #48

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21 changes: 15 additions & 6 deletions docker-entrypoint.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -100,16 +100,25 @@ TERM=dumb php -- "$WORDPRESS_DB_HOST" "$WORDPRESS_DB_USER" "$WORDPRESS_DB_PASSWO
<?php
// database might not exist, so let's try creating it (just to be safe)

$stderr = fopen('php://stderr', 'w');

list($host, $port) = explode(':', $argv[1], 2);
$mysql = new mysqli($host, $argv[2], $argv[3], '', (int)$port);

if ($mysql->connect_error) {
file_put_contents('php://stderr', 'MySQL Connection Error: (' . $mysql->connect_errno . ') ' . $mysql->connect_error . "\n");
exit(1);
}
$maxTries = 10;
do {
$mysql = new mysqli($host, $argv[2], $argv[3], '', (int)$port);
if ($mysql->connect_error) {
fwrite($stderr, "\n" . 'MySQL Connection Error: (' . $mysql->connect_errno . ') ' . $mysql->connect_error . "\n");
--$maxTries;
if ($maxTries <= 0) {
exit(1);
}
sleep(3);
}
} while ($mysql->connect_error);

if (!$mysql->query('CREATE DATABASE IF NOT EXISTS `' . $mysql->real_escape_string($argv[4]) . '`')) {
file_put_contents('php://stderr', 'MySQL "CREATE DATABASE" Error: ' . $mysql->error . "\n");
fwrite($stderr, "\n" . 'MySQL "CREATE DATABASE" Error: ' . $mysql->error . "\n");
$mysql->close();
exit(1);
}
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