public function run(array $id, $startTime = null, $endTime = null)
{
$download = \Yii::$app->request->get('download') ? true : false;
$ids = is_array($id) ? $id : [$id];
/* @var Storage $storage */
$storage = Module::getInstance()->storage;
$startTimestamp = Storage::timestamp($startTime);
$endTimestamp = Storage::timestamp($endTime);
if ($startTime === null || $startTimestamp >= $endTimestamp) {
$startTimestamp = $endTimestamp - $storage->actualDaysCount * Storage::SECONDS_PER_DAY;
}
$tles = $storage->get($ids, $startTimestamp, $endTimestamp);
$foundIds = array_keys($tles);
$missedIds = array_values(array_diff($ids, $foundIds));
if (count($missedIds) > 0 && $download) {
$storage->update($missedIds, $startTimestamp, $endTimestamp);
$tles = $storage->get($ids, $startTimestamp, $endTimestamp);
}
\Yii::$app->response->format = 'json';
return $tles;
}
public function actionUpdate()
{
/* @var Storage $storage */
$storage = Module::getInstance()->storage;
if ($this->existing) {
$ids = $storage->getIds();
} elseif ($this->all) {
$ids = ['*'];
} else {
$ids = func_get_args();
}
if (empty($ids)) {
$this->stdout(Module::t('Satellites\' NORAD identifiers are not specified.') . "\n");
return self::EXIT_CODE_NORMAL;
}
$startTimestamp = Storage::timestamp($this->startTime);
$endTimestamp = Storage::timestamp($this->endTime);
if ($this->startTime === null || $startTimestamp >= $endTimestamp) {
$startTimestamp = $endTimestamp - $storage->actualDaysCount * Storage::SECONDS_PER_DAY;
}
try {
$this->stdout(sprintf(Module::t('Downloading TLEs for specified satellites and time range %s — %s...'), gmdate('Y-m-d H:i:s', $startTimestamp), gmdate('Y-m-d H:i:s', $endTimestamp)) . "\n");
$tles = $storage->update($ids, $startTimestamp, $endTimestamp);
$this->stdout("\n" . Module::t('Downloaded TLEs:') . "\n");
foreach ($tles as $tle) {
$this->stdout(str_repeat('-', Storage::TLE_LINE_LENGTH) . "\n");
$this->stdout(gmdate('Y-m-d H:i:s', Storage::getEpochTimestamp($tle)) . "\n");
foreach ($tle as $line) {
$this->stdout($line . "\n");
}
}
} catch (Exception $e) {
$this->stdout($e->getMessage() . "\n");
return self::EXIT_CODE_ERROR;
}
return self::EXIT_CODE_NORMAL;
}
/**
* Downloads TLEs from Space Track for specified time range and saves them in the storage.
*
* @param array $ids NORAD identifiers of satellites.
* @param int $startTime Unix timestamp of range's start.
* @param int $endTime Unix timestamp of range's end.
* @return array
* @throws Exception
*/
public function update(array $ids, $startTime, $endTime)
{
$tles = $this->download($ids, $startTime, $endTime);
foreach ($tles as $tle) {
if ($this->exists($tle)) {
continue;
}
if (!$this->add($tle)) {
throw new Exception(Module::t('Unable to add TLE to storage.'));
}
}
return $tles;
}