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mongo-orchestration.php
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mongo-orchestration.php
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<?php
declare(strict_types=1);
set_error_handler(function($errno, $errstr, $errfile, $errline) {
fprintf(STDERR, "%s\n", $errstr);
exit(1);
});
set_exception_handler(function($e) {
fprintf(STDERR, "%s: %s\n", get_class($e), $e->getMessage());
exit(1);
});
function getId(string $config): string {
$config = json_decode($config, null, 512, JSON_THROW_ON_ERROR);
if (!isset($config->id) || !is_string($config->id)) {
throw new UnexpectedValueException('Could not determine id');
}
return $config->id;
}
function getTopology(string $file): string {
$topology = basename(dirname($file));
if (!in_array($topology, ['servers', 'replica_sets', 'sharded_clusters'])) {
throw new UnexpectedValueException('Unsupported topology: ' . $topology);
}
return $topology;
}
function request(string $uri, array $options = []): stdClass {
$options += [
'method' => 'GET',
'header' => 'Accept: application/json',
'ignore_errors' => true,
];
$response = file_get_contents($uri, false, stream_context_create(['http' => $options]));
if (preg_match('#HTTP/1.[01] ([0-9]+)#', $http_response_header[0], $matches) !== 1) {
throw new UnexpectedValueException('Could not determine HTTP response code');
}
$code = (int) $matches[1];
if ($code !== 200) {
throw new UnexpectedValueException(sprintf("%s %s returned HTTP response code: %d\n\n%s", $options['method'] ?? 'GET', $uri, $code, $response));
}
return json_decode($response, null, 512, JSON_THROW_ON_ERROR);
}
function start(string $uri, string $config): void {
$options = [
'method' => 'POST',
'header' => "Accept: application/json\r\n" .
"Content-type: application/x-www-form-urlencoded",
'content' => $config,
'timeout' => 120,
];
printf("%s\n", json_encode(request($uri, $options), JSON_PRETTY_PRINT));
}
function status(string $uri): void {
printf("%s\n", json_encode(request($uri), JSON_PRETTY_PRINT));
}
function stop(string $uri): void {
$options = [
'method' => 'DELETE',
'header' => "Accept: application/json\r\n" .
"Content-type: application/x-www-form-urlencoded",
'content' => $config,
'timeout' => 120,
];
printf("%s\n", json_encode(request($uri, $options), JSON_PRETTY_PRINT));
}
function usage(): void {
global $argv;
fprintf(STDERR, "usage: %s <action> <id>|<path/to/config.json>\n", $argv[0]);
fprintf(STDERR, "action: start|status|stop\n");
exit(1);
}
$tools = getenv('DRIVER_TOOLS') ?: '/home/jmikola/workspace/mongodb/drivers-evergreen-tools';
$server = getenv('MONGO_ORCHESTRATION_URI') ?: 'http://localhost:8889';
if ($argc < 2) {
usage();
}
$action = $argv[1] ?? null;
switch ($action) {
case 'start':
$file = $argv[2];
if (!is_readable($file)) {
throw new UnexpectedValueException('Cannot read input file');
}
$topology = getTopology($file);
$config = file_get_contents($file);
$config = str_replace('ABSOLUTE_PATH_REPLACEMENT_TOKEN', $tools, $config);
start(sprintf('%s/v1/%s', $server, $topology), $config);
break;
case 'status':
$topology = $argv[2];
$id = $argv[3];
status(sprintf('%s/v1/%s/%s', $server, $topology, $id));
break;
case 'stop':
$topology = $argv[2];
$id = $argv[3];
stop(sprintf('%s/v1/%s/%s', $server, $topology, $id));
break;
case 'list':
foreach (['servers', 'replica_sets', 'sharded_clusters'] as $topology) {
$response = request(sprintf('%s/v1/%s', $server, $topology));
printf("%s:\n", $topology);
printf("%s\n\n", json_encode($response->$topology, JSON_PRETTY_PRINT));
}
break;
default:
usage();
}

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