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MDL-41827 tool_generator: Adding a file size limit

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This commit is contained in:
David Monllao 2013-09-17 17:33:07 +08:00
parent 09373a5a62
commit 53e6d79c39
5 changed files with 52 additions and 20 deletions
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9
admin/tool/generator/classes/backend.php
View File

@ -51,6 +51,11 @@ abstract class tool_generator_backend {
*/
protected $fixeddataset;
/**
* @var int|bool Maximum number of bytes for file.
*/
protected $filesizelimit;
/**
* @var bool True if displaying progress
*/
@ -81,10 +86,11 @@ abstract class tool_generator_backend {
*
* @param int $size Size as numeric index
* @param bool $fixeddataset To use fixed or random data
* @param int|bool $filesizelimit The max number of bytes for a generated file
* @param bool $progress True if progress information should be displayed
* @throws coding_exception If parameters are invalid
*/
public function __construct($size, $fixeddataset = false, $progress = true) {
public function __construct($size, $fixeddataset = false, $filesizelimit = false, $progress = true) {
// Check parameter.
if ($size < self::MIN_SIZE || $size > self::MAX_SIZE) {
@ -94,6 +100,7 @@ abstract class tool_generator_backend {
// Set parameters.
$this->size = $size;
$this->fixeddataset = $fixeddataset;
$this->filesizelimit = $filesizelimit;
$this->progress = $progress;
}

30
admin/tool/generator/classes/course_backend.php
View File

@ -100,15 +100,15 @@ class tool_generator_course_backend extends tool_generator_backend {
* @param string $shortname Course shortname
* @param int $size Size as numeric index
* @param bool $fixeddataset To use fixed or random data
* @param int|bool $filesizelimit The max number of bytes for a generated file
* @param bool $progress True if progress information should be displayed
* @return int Course id
*/
public function __construct($shortname, $size, $fixeddataset = false, $progress = true) {
public function __construct($shortname, $size, $fixeddataset = false, $filesizelimit = false, $progress = true) {
// Set parameters.
$this->shortname = $shortname;
parent::__construct($size, $fixeddataset, $progress);
parent::__construct($size, $fixeddataset, $filesizelimit, $progress);
}
/**
@ -345,7 +345,7 @@ class tool_generator_course_backend extends tool_generator_backend {
// Generate random binary data (different for each file so it
// doesn't compress unrealistically).
$data = self::get_random_binary(self::$paramsmallfilesize[$this->size]);
$data = self::get_random_binary($this->limit_filesize(self::$paramsmallfilesize[$this->size]));
$fs->create_file_from_string($filerecord, $data);
$this->dot($i, $count);
@ -362,6 +362,7 @@ class tool_generator_course_backend extends tool_generator_backend {
* @return Random data
*/
private static function get_random_binary($length) {
$data = microtime(true);
if (strlen($data) > $length) {
// Use last digits of data.
@ -382,8 +383,9 @@ class tool_generator_course_backend extends tool_generator_backend {
// Work out how many files and how many blocks to use (up to 64KB).
$count = self::$parambigfilecount[$this->size];
$blocks = ceil(self::$parambigfilesize[$this->size] / 65536);
$blocksize = floor(self::$parambigfilesize[$this->size] / $blocks);
$filesize = $this->limit_filesize(self::$parambigfilesize[$this->size]);
$blocks = ceil($filesize / 65536);
$blocksize = floor($filesize / $blocks);
$this->log('createbigfiles', $count, true);
@ -504,4 +506,20 @@ class tool_generator_course_backend extends tool_generator_backend {
return $userid;
}
/**
* Restricts the binary file size if necessary
*
* @param int $length The total length
* @return int The limited length if a limit was specified.
*/
private function limit_filesize($length) {
// Limit to $this->filesizelimit.
if (is_numeric($this->filesizelimit) && $length > $this->filesizelimit) {
$length = floor($this->filesizelimit);
}
return $length;
}
}

5
admin/tool/generator/classes/site_backend.php
View File

@ -61,15 +61,16 @@ class tool_generator_site_backend extends tool_generator_backend {
* @param int $size Size as numeric index
* @param bool $bypasscheck If debugging level checking was skipped.
* @param bool $fixeddataset To use fixed or random data
* @param int|bool $filesizelimit The max number of bytes for a generated file
* @param bool $progress True if progress information should be displayed
* @return int Course id
*/
public function __construct($size, $bypasscheck, $fixeddataset = false, $progress = true) {
public function __construct($size, $bypasscheck, $fixeddataset = false, $filesizelimit = false, $progress = true) {
// Set parameters.
$this->bypasscheck = $bypasscheck;
parent::__construct($size, $fixeddataset, $progress);
parent::__construct($size, $fixeddataset, $filesizelimit, $progress);
}
/**

15
admin/tool/generator/cli/maketestcourse.php
View File

@ -35,6 +35,7 @@ list($options, $unrecognized) = cli_get_params(
'shortname' => false,
'size' => false,
'fixeddataset' => false,
'filesizelimit' => false,
'bypasscheck' => false,
'quiet' => false
),
@ -52,11 +53,12 @@ Not for use on live sites; only normally works if debugging is set to DEVELOPER
level.
Options:
--shortname Shortname of course to create (required)
--size Size of course to create XS, S, M, L, XL, or XXL (required)
--fixeddataset Use a fixed data set instead of randomly generated data
--bypasscheck Bypasses the developer-mode check (be careful!)
--quiet Do not show any output
--shortname Shortname of course to create (required)
--size Size of course to create XS, S, M, L, XL, or XXL (required)
--fixeddataset Use a fixed data set instead of randomly generated data
--filesizelimit Limits the size of the generated files to the specified bytes
--bypasscheck Bypasses the developer-mode check (be careful!)
--quiet Do not show any output
-h, --help Print out this help
@ -76,6 +78,7 @@ if (empty($options['bypasscheck']) && !debugging('', DEBUG_DEVELOPER)) {
$shortname = $options['shortname'];
$sizename = $options['size'];
$fixeddataset = $options['fixeddataset'];
$filesizelimit = $options['filesizelimit'];
// Check size.
try {
@ -93,5 +96,5 @@ if ($error = tool_generator_course_backend::check_shortname_available($shortname
session_set_user(get_admin());
// Do backend code to generate course.
$backend = new tool_generator_course_backend($shortname, $size, $fixeddataset, empty($options['quiet']));
$backend = new tool_generator_course_backend($shortname, $size, $fixeddataset, $filesizelimit, empty($options['quiet']));
$id = $backend->make();

13
admin/tool/generator/cli/maketestsite.php
View File

@ -34,6 +34,7 @@ list($options, $unrecognized) = cli_get_params(
'help' => false,
'size' => false,
'fixeddataset' => false,
'filesizelimit' => false,
'bypasscheck' => false,
'quiet' => false
),
@ -57,10 +58,11 @@ Consider that, depending on the size you select, this CLI tool can really genera
$sitesizes
Options:
--size Size of the generated site, this value affects the number of courses and their size. Accepted values: XS, S, M, L, XL, or XXL (required)
--fixeddataset Use a fixed data set instead of randomly generated data
--bypasscheck Bypasses the developer-mode check (be careful!)
--quiet Do not show any output
--size Size of the generated site, this value affects the number of courses and their size. Accepted values: XS, S, M, L, XL, or XXL (required)
--fixeddataset Use a fixed data set instead of randomly generated data
--filesizelimit Limits the size of the generated files to the specified bytes
--bypasscheck Bypasses the developer-mode check (be careful!)
--quiet Do not show any output
-h, --help Print out this help
@ -79,6 +81,7 @@ if (empty($options['bypasscheck']) && !$CFG->debugdeveloper) {
// Get options.
$sizename = $options['size'];
$fixeddataset = $options['fixeddataset'];
$filesizelimit = $options['filesizelimit'];
// Check size.
try {
@ -91,5 +94,5 @@ try {
session_set_user(get_admin());
// Do backend code to generate site.
$backend = new tool_generator_site_backend($size, $options['bypasscheck'], $fixeddataset, empty($options['quiet']));
$backend = new tool_generator_site_backend($size, $options['bypasscheck'], $fixeddataset, $filesizelimit, empty($options['quiet']));
$backend->make();