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appwrite/app/workers/functions.php
2020-07-17 13:30:08 +03:00

251 lines
8.5 KiB
PHP

<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
use Appwrite\Database\Database;
use Appwrite\Database\Adapter\MySQL as MySQLAdapter;
use Appwrite\Database\Adapter\Redis as RedisAdapter;
use Appwrite\Database\Validator\Authorization;
use Utopia\CLI\Console;
use Utopia\Config\Config;
require_once __DIR__.'/../init.php';
cli_set_process_title('Functions V1 Worker');
Console::success(APP_NAME.' functions worker v1 has started');
$environments = Config::getParam('environments');
$warmupStart = microtime(true);
Co\run(function() use ($environments) {
foreach($environments as $environment) { // Warmup: make sure images are ready to run fast 🚀
go(function() use ($environment) {
$stdout = '';
$stderr = '';
Console::info('Warming up '.$environment['name'].' environment');
Console::execute('docker pull '.$environment['image'], null, $stdout, $stderr);
if(!empty($stdout)) {
Console::log($stdout);
}
if(!empty($stderr)) {
Console::error($stderr);
}
});
}
});
$warmupEnd = microtime(true);
$warmupTime = $warmupEnd - $warmupStart;
Console::success('Finished warmup in '.$warmupTime.' seconds');
class FunctionsV1
{
public $args = [];
public function setUp()
{
}
public function perform()
{
global $environments, $register;
$projectId = $this->args['projectId'];
$functionId = $this->args['functionId'];
$functionTag = $this->args['functionTag'];
$executionId = $this->args['executionId'];
$functionTrigger = $this->args['functionTrigger'];
$projectDB = new Database();
$projectDB->setAdapter(new RedisAdapter(new MySQLAdapter($register), $register));
$projectDB->setNamespace('app_'.$projectId);
$projectDB->setMocks(Config::getParam('collections', []));
Authorization::disable();
$function = $projectDB->getDocument($functionId);
Authorization::reset();
if (empty($function->getId()) || Database::SYSTEM_COLLECTION_FUNCTIONS != $function->getCollection()) {
throw new Exception('Function not found', 404);
}
Authorization::disable();
$tag = $projectDB->getDocument($functionTag);
Authorization::reset();
if($tag->getAttribute('functionId') !== $function->getId()) {
throw new Exception('Tag not found', 404);
}
Authorization::disable();
$execution = $projectDB->getDocument($executionId);
if (empty($execution->getId()) || Database::SYSTEM_COLLECTION_EXECUTIONS != $execution->getCollection()) {
$execution = $projectDB->createDocument([
'$collection' => Database::SYSTEM_COLLECTION_EXECUTIONS,
'$permissions' => [
'read' => [],
'write' => [],
],
'dateCreated' => time(),
'functionId' => $function->getId(),
'status' => 'processing', // waiting / processing / completed / failed
'exitCode' => 0,
'stdout' => '',
'stderr' => '',
'time' => 0,
]);
if (false === $execution) {
throw new Exception('Failed saving execution to DB', 500);
}
}
Authorization::reset();
$environment = (isset($environments[$function->getAttribute('env', '')]))
? $environments[$function->getAttribute('env', '')]
: null;
if(\is_null($environment)) {
throw new Exception('Environment "'.$function->getAttribute('env', '').' is not supported');
}
$vars = array_merge($function->getAttribute('vars', []), [
'APPWRITE_FUNCTION_ID' => $functionId,
'APPWRITE_FUNCTION_TAG' => $functionTag,
'APPWRITE_FUNCTION_TRIGGER' => $functionTrigger,
'APPWRITE_FUNCTION_ENV_NAME' => $environment['name'],
'APPWRITE_FUNCTION_ENV_VERSION' => $environment['version'],
]);
array_walk($vars, function (&$value, $key) {
$value = "\t\t\t--env {$key}={$value} \\";
});
/*
* 1. Get Original Task
* 2. Check for updates
* If has updates skip task and don't reschedule
* If status not equal to play skip task
* 3. Check next run date, update task and add new job at the given date
* 4. Execute task (set optional timeout)
* 5. Update task response to log
* On success reset error count
* On failure add error count
* If error count bigger than allowed change status to pause
*/
/**
* 1. Get event args - DONE
* 2. Unpackage code in the isolated container - DONE
* 3. Execute in container with timeout
* + messure execution time - DONE
* + pass env vars - DONE
* + pass one-time api key
* 4. Update execution status
* 5. Update execution stdout & stderr
* 6. Trigger audit log
* 7. Trigger usage log
*/
//TODO aviod scheduled execution if delay is bigger than X offest
/**
* Limit CPU Usage - DONE
* Limit Memory Usage - DONE
* Limit Network Usage
* Limit Storage Usage (//--storage-opt size=120m \)
* Make sure no access to redis, mariadb, influxdb or other system services
* Make sure no access to NFS server / storage volumes
* Access Appwrite REST from internal network for improved performance
*/
$tagPath = $tag->getAttribute('codePath', '');
$tagDir = \pathinfo($tag->getAttribute('codePath', ''), PATHINFO_DIRNAME);
$tagFile = \pathinfo($tag->getAttribute('codePath', ''), PATHINFO_BASENAME);
$tagPathTarget = '/tmp/project-'.$projectId.'/'.$tag->getId().'/code.tar.gz';
$tagPathTargetDir = \pathinfo($tagPathTarget, PATHINFO_DIRNAME);
$container = 'appwrite-function-'.$functionId;
if(!\is_readable($tagPath)) {
throw new Exception('Code is not readable: '.$tag->getAttribute('codePath', ''));
}
if (!\file_exists($tagPathTargetDir)) {
if (!\mkdir($tagPathTargetDir, 0755, true)) {
throw new Exception('Can\'t create directory '.$tagPathTargetDir);
}
}
if (!\file_exists($tagPathTarget)) {
if(!\copy($tagPath, $tagPathTarget)) {
throw new Exception('Can\'t create temporary code file '.$tagPathTarget);
}
}
$stdout = '';
$stderr = '';
$executionStart = \microtime(true);
$exitCode = Console::execute("docker run \
--cpus=1 \
--memory=50m \
--memory-swap=50m \
--rm \
--name={$container} \
--volume {$tagPathTargetDir}:/tmp:rw \
--workdir /usr/local/src \
".implode("\n", $vars)."
{$environment['image']} \
sh -c 'mv /tmp/code.tar.gz /usr/local/src/code.tar.gz && tar -zxf /usr/local/src/code.tar.gz --strip 1 && rm /usr/local/src/code.tar.gz && {$tag->getAttribute('command', '')}'"
, null, $stdout, $stderr, 30);
$executionEnd = \microtime(true);
Console::info("Function executed in " . ($executionEnd - $executionStart) . " seconds with exit code {$exitCode}");
Authorization::disable();
$execution = $projectDB->updateDocument(array_merge($execution->getArrayCopy(), [
'status' => ($exitCode === 0) ? 'completed' : 'failed',
'exitCode' => $exitCode,
'stdout' => mb_substr($stdout, -2000), // log last 2000 chars output
'stderr' => mb_substr($stderr, -2000), // log last 2000 chars output
'time' => ($executionEnd - $executionStart),
]));
Authorization::reset();
if (false === $function) {
throw new Exception('Failed saving execution to DB', 500);
}
/**
* Get Usage Stats
* -> Network (docker stats --no-stream --format="{{.NetIO}}" appwrite)
* -> CPU Time
* -> Invoctions (+1)
* Report to usage worker
*/
var_dump('stdout', $stdout);
var_dump('stderr', $stderr);
// Double-check Cleanup
}
public function tearDown()
{
}
}