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<?php declare(strict_types=1);
use Daphnie\Collector;
class Telemetry_Module extends Module_Skeleton
{
private $collector;
public function __construct()
{
parent::__construct();
$this->exportedFunctions = [
'*' => PRIVILEGE_ADMIN,
'get' => PRIVILEGE_ADMIN|PRIVILEGE_SITE,
'range' => PRIVILEGE_SITE|PRIVILEGE_ADMIN,
'has' => PRIVILEGE_SITE|PRIVILEGE_ADMIN
];
if (!TELEMETRY_ENABLED) {
$this->exportedFunctions = ['*' => PRIVILEGE_NONE];
}
}
public function get($metric, int $site_id = null)
{
if ($this->permission_level & (PRIVILEGE_USER | PRIVILEGE_SITE)) {
if ($site_id && $site_id !== $this->site_id) {
error('Cannot specify site ID');
return null;
}
$site_id = $this->site_id;
}
return $this->getCollector()->get($metric, $site_id);
}
public function has(string $metric): bool
{
return null !== \Daphnie\MetricBroker::resolve($metric);
}
public function range($metric, int $begin, ?int $end = null, int $site_id = null, $summable = true)
{
if ($this->permission_level & (PRIVILEGE_USER | PRIVILEGE_SITE)) {
if ($site_id && $site_id !== $this->site_id) {
error('Cannot specify site ID');
return null;
}
$site_id = $this->site_id;
}
return $this->getCollector()->range($metric, $begin, $end, $site_id, $summable);
}
public function histogram($metric, array $bins, int $begin, ?int $end = null, int $site_id = null)
{
if ($this->permission_level & (PRIVILEGE_USER | PRIVILEGE_SITE)) {
if ($site_id && $site_id !== $this->site_id) {
error('Cannot specify site ID');
return null;
}
$site_id = $this->site_id;
}
return $this->getCollector()->histogram($metric, $begin, $end, $site_id, $specifier);
}
private function getCollector(): Collector
{
if (!isset($this->collector)) {
$this->collector = new Collector(\PostgreSQL::pdo());
}
return $this->collector;
}
public function drop_metric(string $metric, bool $rekey = false): bool
{
if (null === ($id = $this->getCollector()->metricAsId($metric))) {
return false;
}
$db = \PostgreSQL::pdo();
$table = $rekey ? 'metric_attributes' : 'metrics';
$chunker = new \Daphnie\Chunker($db);
$chunker->decompressRange(null);
$stmt = $db->prepare("DELETE FROM $table WHERE attr_id = :attr_id");
$ret = $stmt->execute([':attr_id' => $id]);
$chunker->release();
return $ret ?: error('Failed to drop metric %(metric)s: %(err)s',
['metric' => $metric, 'err' => array_get($stmt->errorInfo(), 2, '')]
);
}
public function chunks(): array
{
return (new \Daphnie\Chunker(\PostgreSQL::pdo()))->getChunkStats();
}
public function metrics(): array
{
return array_keys($this->getCollector()->all());
}
public function db_compression_usage(): array {
$pg = PostgreSQL::pdo();
$res = $pg->query("SELECT * FROM timescaledb_information.compressed_hypertable_stats WHERE hypertable_name::varchar = 'metrics'");
if (!$res) {
return [];
}
$rec = array_get($res->fetchAll(\PDO::FETCH_ASSOC), 0, []);
foreach ($rec as $k => $v) {
if (substr($k, -6) === '_bytes') {
$rec[$k] = \Formatter::changeBytes($v);
}
}
return (array)$rec;
}
public function db_usage(): array
{
$pg = PostgreSQL::pdo();
$res = $pg->query("
SELECT ht.id,
ht.schema_name AS table_schema,
ht.table_name,
t.tableowner AS table_owner,
ht.num_dimensions,
( SELECT count(1) AS count
FROM _timescaledb_catalog.chunk ch
WHERE ch.hypertable_id = ht.id) AS num_chunks,
bsize.table_bytes,
bsize.index_bytes,
bsize.toast_bytes,
bsize.total_bytes
FROM _timescaledb_catalog.hypertable ht
LEFT JOIN pg_tables t ON ht.table_name = t.tablename AND ht.schema_name = t.schemaname
LEFT JOIN LATERAL hypertable_relation_size(
CASE
WHEN has_schema_privilege(ht.schema_name::text, 'USAGE'::text) THEN format('%I.%I'::text, ht.schema_name, ht.table_name)
ELSE NULL::text
END::regclass) bsize(table_bytes, index_bytes, toast_bytes, total_bytes) ON true
WHERE table_name = 'metrics'");
if (!$res) {
return [];
}
$rec = array_get($res->fetchAll(\PDO::FETCH_ASSOC), 0);
foreach ($rec as $k => $v) {
if (substr($k, -6) === '_bytes') {
$rec[$k] = \Formatter::changeBytes($v);
}
}
return (array)$rec;
}
public function decompress_all(): bool
{
$pg = PostgreSQL::pdo();
$chunker = new \Daphnie\Chunker($pg);
if (null === $chunker->decompressRange(null)) {
return false;
}
$chunker->clearTransientRecompressionChunks();
return true;
}
public function reinitialize_compression(): bool
{
$pg = PostgreSQL::pdo();
$chunker = new \Daphnie\Chunker($pg);
foreach ($chunker->getJobs() as $job) {
if (!$chunker->resumeJob($job['job_id'])) {
return false;
}
}
return true;
}
public function _cron(Cronus $cron)
{
$collector = $this->getCollector();
foreach ($collector->getAnonymousCollections() as $collection) {
$collection->log($collector);
}
$cache = \Cache_Global::spawn();
$cache->get(CONFIGURATION_KEY);
\Lararia\JobDaemon::snapshot();
}
}