Viewing file:  IterableAPICollection.php (13.68 KB) -rw-r--r--
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<?php
/**
* Vonage Client Library for PHP
*
* @copyright Copyright (c) 2016-2020 Vonage, Inc. (http://vonage.com)
* @license https://github.com/Vonage/vonage-php-sdk-core/blob/master/LICENSE.txt Apache License 2.0
*/
declare(strict_types=1);
namespace Vonage\Entity;
use Countable;
use Iterator;
use Laminas\Diactoros\Request;
use Psr\Http\Client\ClientExceptionInterface;
use Psr\Http\Message\ResponseInterface;
use RuntimeException;
use Vonage\Client;
use Vonage\Client\APIResource;
use Vonage\Client\ClientAwareInterface;
use Vonage\Client\ClientAwareTrait;
use Vonage\Client\Exception as ClientException;
use Vonage\Entity\Filter\EmptyFilter;
use Vonage\Entity\Filter\FilterInterface;
use function array_key_exists;
use function array_merge;
use function count;
use function filter_var;
use function http_build_query;
use function is_null;
use function json_decode;
use function md5;
use function strpos;
/**
* Common code for iterating over a collection, and using the collection class to discover the API path.
*/
class IterableAPICollection implements ClientAwareInterface, Iterator, Countable
{
use ClientAwareTrait;
/**
* @var APIResource
*/
protected $api;
/**
* Determines if the collection will automatically go to the next page
*
* @var bool
*/
protected $autoAdvance = true;
/**
* @var string
*/
protected $baseUrl = Client::BASE_API;
/**
* Holds a cache of various pages we have already polled
*
* @var array<string, string>
*/
protected $cache = [];
/**
* Index of the current resource of the current page
*
* @var int
*/
protected $current;
/**
* Count the items in the response instead of returning the count parameter
*
* @deprected This exists for legacy reasons, will be removed in v3
*
* @var bool
*/
protected $naiveCount = false;
/**
* Current page data.
*
* @var array
*/
protected $page;
/**
* Last API Response
*
* @var ResponseInterface
*/
protected $response;
/**
* User set page index.
*
* @var int
*/
protected $index = 1;
/**
* @var bool
*/
protected $isHAL = true;
/**
* User set pgge sixe.
*
* @var int
*/
protected $size;
/**
* @var FilterInterface
*/
protected $filter;
/**
* @var string
*/
protected $collectionName = '';
/**
* @var string
*/
protected $collectionPath;
protected $hydrator;
/**
* @param $hydrator
*
* @return $this
*/
public function setHydrator($hydrator): self
{
$this->hydrator = $hydrator;
return $this;
}
/**
* @param $data
* @param $id deprecated
*/
public function hydrateEntity($data, $id = null)
{
if ($this->hydrator) {
return $this->hydrator->hydrate($data);
}
return $data;
}
public function getResourceRoot(): array
{
// Handles issues where an API returns empty for no results, as opposed
// to a proper API response with a count field of 0
if (empty($this->page)) {
return [];
}
$collectionName = $this->getApiResource()->getCollectionName();
if ($this->getApiResource()->isHAL()) {
return $this->page['_embedded'][$collectionName];
}
if (!empty($this->getApiResource()->getCollectionName())) {
return $this->page[$collectionName];
}
return $this->page;
}
/**
* Return the current item, expects concrete collection to handle creating the object.
*
* @throws ClientExceptionInterface
* @throws ClientException\Exception
* @throws ClientException\Request
* @throws ClientException\Server
*/
#[\ReturnTypeWillChange]
public function current()
{
if (is_null($this->current)) {
$this->rewind();
}
return $this->hydrateEntity($this->getResourceRoot()[$this->current], $this->key());
}
/**
* No checks here, just advance the index.
*/
public function next(): void
{
$this->current++;
}
/**
* Return the ID of the resource, in some cases this is `id`, in others `uuid`.
*
* @return string
*/
#[\ReturnTypeWillChange]
public function key()
{
return
$this->getResourceRoot()[$this->current]['id'] ??
$this->getResourceRoot()[$this->current]['uuid'] ??
$this->current;
}
/**
* Handle pagination automatically (unless configured not to).
*
* @throws ClientExceptionInterface
* @throws ClientException\Exception
* @throws ClientException\Request
* @throws ClientException\Server
*/
public function valid(): bool
{
//can't be valid if there's not a page (rewind sets this)
if (!isset($this->page)) {
return false;
}
//all hal collections have an `_embedded` object, we expect there to be a property matching the collection name
if (
$this->getApiResource()->isHAL() &&
!isset($this->page['_embedded'][$this->getApiResource()->getCollectionName()])
) {
return false;
}
//if we have a page with no items, we've gone beyond the end of the collection
if (!count($this->getResourceRoot())) {
return false;
}
// If there is no item at the current counter, we've gone beyond the end of this page
if (!$this->getAutoAdvance() && !isset($this->getResourceRoot()[$this->current])) {
return false;
}
//index the start of a page at 0
if (is_null($this->current)) {
$this->current = 0;
}
//if our current index is past the current page, fetch the next page if possible and reset the index
if ($this->getAutoAdvance() && !isset($this->getResourceRoot()[$this->current])) {
if (isset($this->page['_links'])) {
if (isset($this->page['_links']['next'])) {
$this->fetchPage($this->page['_links']['next']['href']);
$this->current = 0;
return true;
}
// We don't have a next page, so we're done
return false;
}
if ($this->current === count($this->getResourceRoot())) {
$this->index++;
$this->current = 0;
$this->fetchPage($this->getApiResource()->getBaseUri());
return !($this->count() === 0);
}
return false;
}
return true;
}
/**
* Fetch the initial page
*
* @throws ClientExceptionInterface
* @throws ClientException\Exception
* @throws ClientException\Request
* @throws ClientException\Server
*/
public function rewind(): void
{
$this->current = 0;
$this->fetchPage($this->getApiResource()->getBaseUri());
}
/**
* @return $this
*/
public function setApiResource(APIResource $api): self
{
$this->api = $api;
return $this;
}
public function getApiResource(): APIResource
{
return $this->api;
}
/**
* Count of total items
*
* @throws ClientExceptionInterface
* @throws ClientException\Exception
* @throws ClientException\Request
* @throws ClientException\Server
*/
public function count(): int
{
if (!isset($this->page)) {
$this->rewind();
}
if (isset($this->page)) {
// Force counting the items for legacy reasons
if ($this->getNaiveCount()) {
return count($this->getResourceRoot());
}
if (array_key_exists('total_items', $this->page)) {
return $this->page['total_items'];
}
if (array_key_exists('count', $this->page)) {
return $this->page['count'];
}
return count($this->getResourceRoot());
}
return 0;
}
/**
* @return $this
*/
public function setBaseUrl(string $url): self
{
$this->baseUrl = $url;
return $this;
}
/**
* @param $index
*
* @return $this
*/
public function setPage($index): self
{
$this->index = (int)$index;
return $this;
}
/**
* @return int|mixed
*/
public function getPage()
{
if (isset($this->page)) {
if (array_key_exists('page', $this->page)) {
return $this->page['page'];
}
return $this->page['page_index'];
}
if (isset($this->index)) {
return $this->index;
}
throw new RuntimeException('page not set');
}
/**
* @throws ClientExceptionInterface
* @throws ClientException\Exception
* @throws ClientException\Request
* @throws ClientException\Server
*/
public function getPageData(): ?array
{
if (is_null($this->page)) {
$this->rewind();
}
return $this->page;
}
public function setPageData(array $data): void
{
$this->page = $data;
}
/**
* @return int|mixed|void
*/
public function getSize()
{
if (isset($this->page)) {
if (array_key_exists('page_size', $this->page)) {
return $this->page['page_size'];
}
return count($this->getResourceRoot());
}
if (isset($this->size)) {
return $this->size;
}
throw new RuntimeException('size not set');
}
/**
* @param $size
*
* @return $this
*/
public function setSize($size): self
{
$this->size = (int)$size;
return $this;
}
/**
* Filters reduce to query params and include paging settings.
*
* @return $this
*/
public function setFilter(FilterInterface $filter): self
{
$this->filter = $filter;
return $this;
}
public function getFilter(): FilterInterface
{
if (!isset($this->filter)) {
$this->setFilter(new EmptyFilter());
}
return $this->filter;
}
/**
* Fetch a page using the current filter if no query is provided.
*
* @param $absoluteUri
*
* @throws ClientException\Exception
* @throws ClientException\Request
* @throws ClientException\Server
* @throws ClientExceptionInterface
*/
protected function fetchPage($absoluteUri): void
{
//use filter if no query provided
if (false === strpos($absoluteUri, '?')) {
$query = [];
if (isset($this->size)) {
$query['page_size'] = $this->size;
}
if (isset($this->index)) {
$query['page_index'] = $this->index;
}
if (isset($this->filter)) {
$query = array_merge($this->filter->getQuery(), $query);
}
$absoluteUri .= '?' . http_build_query($query);
}
$requestUri = $absoluteUri;
if (filter_var($absoluteUri, FILTER_VALIDATE_URL) === false) {
$requestUri = $this->getApiResource()->getBaseUrl() . $absoluteUri;
}
$cacheKey = md5($requestUri);
if (array_key_exists($cacheKey, $this->cache)) {
$this->page = $this->cache[$cacheKey];
return;
}
$request = new Request($requestUri, 'GET');
$response = $this->client->send($request);
$this->getApiResource()->setLastRequest($request);
$this->response = $response;
$this->getApiResource()->setLastResponse($response);
$body = $this->response->getBody()->getContents();
$json = json_decode($body, true);
$this->cache[md5($requestUri)] = $json;
$this->page = $json;
if ((int)$response->getStatusCode() !== 200) {
throw $this->getException($response);
}
}
/**
* @throws ClientException\Exception
*
* @return ClientException\Request|ClientException\Server
*/
protected function getException(ResponseInterface $response)
{
$response->getBody()->rewind();
$body = json_decode($response->getBody()->getContents(), true);
$status = (int)$response->getStatusCode();
// Error responses aren't consistent. Some are generated within the
// proxy and some are generated within voice itself. This handles
// both cases
// This message isn't very useful, but we shouldn't ever see it
$errorTitle = $body['error-code-label'] ?? $body['error_title'] ?? $body['title'] ?? 'Unexpected error';
if ($status >= 400 && $status < 500) {
$e = new ClientException\Request($errorTitle, $status);
} elseif ($status >= 500 && $status < 600) {
$e = new ClientException\Server($errorTitle, $status);
} else {
$e = new ClientException\Exception('Unexpected HTTP Status Code');
throw $e;
}
return $e;
}
public function getAutoAdvance(): bool
{
return $this->autoAdvance;
}
/**
* @return $this
*/
public function setAutoAdvance(bool $autoAdvance): self
{
$this->autoAdvance = $autoAdvance;
return $this;
}
public function getNaiveCount(): bool
{
return $this->naiveCount;
}
/**
* @return $this
*/
public function setNaiveCount(bool $naiveCount): self
{
$this->naiveCount = $naiveCount;
return $this;
}
}
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