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feat: remove increment/decrement functionality from storage adapters
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As per #117, the increment and decrement functionality (at least decrement) leads to issues with several backends. This commit removes that functionality at all as it should be either part of specific adapters instead (via dedicated interface) or as part of project specific code. This cache component can not guarantee increment/decrement for all adapters out there (especially for adapters which do not support this feature natively to prevent race conditions).

Signed-off-by: Maximilian Bösing <2189546+boesing@users.noreply.github.com>
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@boesing
boesing committed Feb 28, 2024
1 parent 9cca821 commit b1f3dff
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18 changes: 0 additions & 18 deletions psalm-baseline.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -308,8 +308,6 @@
<code>$normalizedKey</code>
<code>$normalizedKey</code>
<code>$normalizedKey</code>
<code>$value</code>
<code>$value</code>
</MixedArgument>
<MixedArgumentTypeCoercion>
<code>$key</code>
Expand Down Expand Up @@ -338,17 +336,11 @@
<code>bool</code>
<code>bool</code>
<code>bool</code>
<code>int|bool</code>
<code>int|bool</code>
<code>int|bool</code>
<code>int|bool</code>
</MixedInferredReturnType>
<MixedMethodCall>
<code>setAdapter</code>
</MixedMethodCall>
<MixedReturnStatement>
<code>$newValue</code>
<code>$newValue</code>
<code><![CDATA[$this->options]]></code>
<code><![CDATA[$this->triggerException(__FUNCTION__, $args, $keys, $e)]]></code>
<code><![CDATA[$this->triggerException(__FUNCTION__, $args, $keys, $e)]]></code>
Expand Down Expand Up @@ -392,20 +384,12 @@
<NullableReturnStatement>
<code>$success</code>
</NullableReturnStatement>
<PossiblyInvalidArgument>
<code><![CDATA[$args['key']]]></code>
<code><![CDATA[$args['key']]]></code>
<code><![CDATA[$args['value']]]></code>
<code><![CDATA[$args['value']]]></code>
</PossiblyInvalidArgument>
<PossiblyUnusedMethod>
<code>getCaching</code>
<code>setCaching</code>
</PossiblyUnusedMethod>
<RedundantCastGivenDocblockType>
<code>(bool) $flag</code>
<code>(int) $value</code>
<code>(int) $value</code>
<code>(string) $key</code>
</RedundantCastGivenDocblockType>
</file>
Expand Down Expand Up @@ -672,8 +656,6 @@
<file src="src/Storage/StorageInterface.php">
<PossiblyUnusedMethod>
<code>addItem</code>
<code>decrementItem</code>
<code>incrementItem</code>
<code>replaceItem</code>
<code>touchItem</code>
</PossiblyUnusedMethod>
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228 changes: 0 additions & 228 deletions src/Storage/Adapter/AbstractAdapter.php
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Original file line number Diff line number Diff line change
Expand Up @@ -1097,234 +1097,6 @@ protected function internalRemoveItems(array &$normalizedKeys)
return $result;
}

/**
* Increment an item.
*
* @param string $key
* @param int $value
* @return int|bool The new value on success, false on failure
* @throws Exception\ExceptionInterface
* @triggers incrementItem.pre(PreEvent)
* @triggers incrementItem.post(PostEvent)
* @triggers incrementItem.exception(ExceptionEvent)
*/
public function incrementItem($key, $value)
{
if (! $this->getOptions()->getWritable()) {
return false;
}

$this->normalizeKey($key);
$args = new ArrayObject([
'key' => &$key,
'value' => &$value,
]);

try {
$eventRs = $this->triggerPre(__FUNCTION__, $args);

$result = $eventRs->stopped()
? $eventRs->last()
: $this->internalIncrementItem($args['key'], $args['value']);

return $this->triggerPost(__FUNCTION__, $args, $result);
} catch (\Exception $e) {
$result = false;
return $this->triggerException(__FUNCTION__, $args, $result, $e);
}
}

/**
* Internal method to increment an item.
*
* @param string $normalizedKey
* @param int $value
* @return int|bool The new value on success, false on failure
* @throws Exception\ExceptionInterface
*/
protected function internalIncrementItem(&$normalizedKey, &$value)
{
$success = null;
$value = (int) $value;
$get = (int) $this->internalGetItem($normalizedKey, $success);
$newValue = $get + $value;

if ($success) {
$this->internalReplaceItem($normalizedKey, $newValue);
} else {
$this->internalAddItem($normalizedKey, $newValue);
}

return $newValue;
}

/**
* Increment multiple items.
*
* @param array $keyValuePairs
* @return array Associative array of keys and new values
* @throws Exception\ExceptionInterface
* @triggers incrementItems.pre(PreEvent)
* @triggers incrementItems.post(PostEvent)
* @triggers incrementItems.exception(ExceptionEvent)
*/
public function incrementItems(array $keyValuePairs)
{
if (! $this->getOptions()->getWritable()) {
return [];
}

$this->normalizeKeyValuePairs($keyValuePairs);
$args = new ArrayObject([
'keyValuePairs' => &$keyValuePairs,
]);

try {
$eventRs = $this->triggerPre(__FUNCTION__, $args);

$result = $eventRs->stopped()
? $eventRs->last()
: $this->internalIncrementItems($args['keyValuePairs']);

return $this->triggerPost(__FUNCTION__, $args, $result);
} catch (\Exception $e) {
$result = [];
return $this->triggerException(__FUNCTION__, $args, $result, $e);
}
}

/**
* Internal method to increment multiple items.
*
* @return array Associative array of keys and new values
* @throws Exception\ExceptionInterface
*/
protected function internalIncrementItems(array &$normalizedKeyValuePairs)
{
$result = [];
foreach ($normalizedKeyValuePairs as $normalizedKey => $value) {
$newValue = $this->internalIncrementItem($normalizedKey, $value);
if ($newValue !== false) {
$result[$normalizedKey] = $newValue;
}
}
return $result;
}

/**
* Decrement an item.
*
* @param string $key
* @param int $value
* @return int|bool The new value on success, false on failure
* @throws Exception\ExceptionInterface
* @triggers decrementItem.pre(PreEvent)
* @triggers decrementItem.post(PostEvent)
* @triggers decrementItem.exception(ExceptionEvent)
*/
public function decrementItem($key, $value)
{
if (! $this->getOptions()->getWritable()) {
return false;
}

$this->normalizeKey($key);
$args = new ArrayObject([
'key' => &$key,
'value' => &$value,
]);

try {
$eventRs = $this->triggerPre(__FUNCTION__, $args);

$result = $eventRs->stopped()
? $eventRs->last()
: $this->internalDecrementItem($args['key'], $args['value']);

return $this->triggerPost(__FUNCTION__, $args, $result);
} catch (\Exception $e) {
$result = false;
return $this->triggerException(__FUNCTION__, $args, $result, $e);
}
}

/**
* Internal method to decrement an item.
*
* @param string $normalizedKey
* @param int $value
* @return int|bool The new value on success, false on failure
* @throws Exception\ExceptionInterface
*/
protected function internalDecrementItem(&$normalizedKey, &$value)
{
$success = null;
$value = (int) $value;
$get = (int) $this->internalGetItem($normalizedKey, $success);
$newValue = $get - $value;

if ($success) {
$this->internalReplaceItem($normalizedKey, $newValue);
} else {
$this->internalAddItem($normalizedKey, $newValue);
}

return $newValue;
}

/**
* Decrement multiple items.
*
* @param array $keyValuePairs
* @return array Associative array of keys and new values
* @throws Exception\ExceptionInterface
* @triggers incrementItems.pre(PreEvent)
* @triggers incrementItems.post(PostEvent)
* @triggers incrementItems.exception(ExceptionEvent)
*/
public function decrementItems(array $keyValuePairs)
{
if (! $this->getOptions()->getWritable()) {
return [];
}

$this->normalizeKeyValuePairs($keyValuePairs);
$args = new ArrayObject([
'keyValuePairs' => &$keyValuePairs,
]);

try {
$eventRs = $this->triggerPre(__FUNCTION__, $args);

$result = $eventRs->stopped()
? $eventRs->last()
: $this->internalDecrementItems($args['keyValuePairs']);

return $this->triggerPost(__FUNCTION__, $args, $result);
} catch (\Exception $e) {
$result = [];
return $this->triggerException(__FUNCTION__, $args, $result, $e);
}
}

/**
* Internal method to decrement multiple items.
*
* @return array Associative array of keys and new values
* @throws Exception\ExceptionInterface
*/
protected function internalDecrementItems(array &$normalizedKeyValuePairs)
{
$result = [];
foreach ($normalizedKeyValuePairs as $normalizedKey => $value) {
$newValue = $this->internalDecrementItem($normalizedKey, $value);
if ($newValue !== false) {
$result[$normalizedKey] = $newValue;
}
}
return $result;
}

/* status */

/**
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36 changes: 0 additions & 36 deletions src/Storage/StorageInterface.php
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Original file line number Diff line number Diff line change
Expand Up @@ -159,42 +159,6 @@ public function removeItem($key);
*/
public function removeItems(array $keys);

/**
* Increment an item.
*
* @param string $key
* @param int $value
* @return int|bool The new value on success, false on failure
* @throws ExceptionInterface
*/
public function incrementItem($key, $value);

/**
* Increment multiple items.
*
* @return array Associative array of keys and new values
* @throws ExceptionInterface
*/
public function incrementItems(array $keyValuePairs);

/**
* Decrement an item.
*
* @param string $key
* @param int $value
* @return int|bool The new value on success, false on failure
* @throws ExceptionInterface
*/
public function decrementItem($key, $value);

/**
* Decrement multiple items.
*
* @return array Associative array of keys and new values
* @throws ExceptionInterface
*/
public function decrementItems(array $keyValuePairs);

/* status */

/**
Expand Down
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