dominionenterprises /
mongo-queue-php
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| 1 | <?php |
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| 2 | /** |
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| 3 | * Defines the DominionEnterprises\Mongo\Queue class. |
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| 4 | */ |
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| 5 | |||
| 6 | namespace DominionEnterprises\Mongo; |
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| 7 | |||
| 8 | /** |
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| 9 | * Abstraction of mongo db collection as priority queue. |
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| 10 | * |
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| 11 | * Tied priorities are ordered by time. So you may use a single priority for normal queuing (default args exist for |
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| 12 | * this purpose). Using a random priority achieves random get() |
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| 13 | */ |
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| 14 | final class Queue implements QueueInterface |
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| 15 | { |
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| 16 | const MONGO_INT32_MAX = 2147483647;//2147483648 can overflow in php mongo without using the MongoInt64 |
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| 17 | |||
| 18 | /** |
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| 19 | * mongo collection to use for queue. |
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| 20 | * |
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| 21 | * @var \MongoDB\Collection |
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| 22 | */ |
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| 23 | private $collection; |
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| 24 | |||
| 25 | /** |
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| 26 | * Construct queue. |
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| 27 | * |
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| 28 | * @param \MongoDB\Collection|string $collectionOrUrl A MongoCollection instance or the mongo connection url. |
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| 29 | * @param string $db the mongo db name |
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| 30 | * @param string $collection the collection name to use for the queue |
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| 31 | * |
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| 32 | * @throws \InvalidArgumentException $collectionOrUrl, $db or $collection was not a string |
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| 33 | */ |
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| 34 | public function __construct($collectionOrUrl, $db = null, $collection = null) |
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| 35 | { |
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| 36 | if ($collectionOrUrl instanceof \MongoDB\Collection) { |
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| 37 | $this->collection = $collectionOrUrl; |
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| 38 | return; |
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| 39 | } |
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| 40 | |||
| 41 | if (!is_string($collectionOrUrl)) { |
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| 42 | throw new \InvalidArgumentException('$collectionOrUrl was not a string'); |
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| 43 | } |
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| 44 | |||
| 45 | if (!is_string($db)) { |
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| 46 | throw new \InvalidArgumentException('$db was not a string'); |
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| 47 | } |
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| 48 | |||
| 49 | if (!is_string($collection)) { |
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| 50 | throw new \InvalidArgumentException('$collection was not a string'); |
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| 51 | } |
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| 52 | |||
| 53 | $mongo = new \MongoDB\Client($collectionOrUrl, [], ['typeMap' => ['root' => 'array', 'document' => 'array', 'array' => 'array']]); |
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| 54 | $mongoDb = $mongo->selectDatabase($db); |
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| 55 | $this->collection = $mongoDb->selectCollection($collection); |
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| 56 | } |
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| 57 | |||
| 58 | /** |
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| 59 | * Ensure an index for the get() method. |
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| 60 | * |
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| 61 | * @param array $beforeSort Fields in get() call to index before the sort field in same format |
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| 62 | * as \MongoDB\Collection::ensureIndex() |
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| 63 | * @param array $afterSort Fields in get() call to index after the sort field in same format as |
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| 64 | * \MongoDB\Collection::ensureIndex() |
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| 65 | * |
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| 66 | * @return void |
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| 67 | * |
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| 68 | * @throws \InvalidArgumentException value of $beforeSort or $afterSort is not 1 or -1 for ascending and descending |
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| 69 | * @throws \InvalidArgumentException key in $beforeSort or $afterSort was not a string |
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| 70 | */ |
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| 71 | public function ensureGetIndex(array $beforeSort = [], array $afterSort = []) |
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| 72 | { |
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| 73 | //using general rule: equality, sort, range or more equality tests in that order for index |
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| 74 | $completeFields = ['running' => 1]; |
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| 75 | |||
| 76 | self::verifySort($beforeSort, 'beforeSort', $completeFields); |
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| 77 | |||
| 78 | $completeFields['priority'] = 1; |
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| 79 | $completeFields['created'] = 1; |
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| 80 | |||
| 81 | self::verifySort($afterSort, 'afterSort', $completeFields); |
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| 82 | |||
| 83 | $completeFields['earliestGet'] = 1; |
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| 84 | |||
| 85 | //for the main query in get() |
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| 86 | $this->ensureIndex($completeFields); |
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| 87 | |||
| 88 | //for the stuck messages query in get() |
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| 89 | $this->ensureIndex(['running' => 1, 'resetTimestamp' => 1]); |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * Ensure an index for the count() method. |
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| 94 | * Is a no-op if the generated index is a prefix of an existing one. If you have a similar ensureGetIndex call, |
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| 95 | * call it first. |
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| 96 | * |
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| 97 | * @param array $fields fields in count() call to index in same format as \MongoDB\Collection::createIndex() |
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| 98 | * @param bool $includeRunning whether to include the running field in the index |
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| 99 | * |
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| 100 | * @return void |
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| 101 | * |
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| 102 | * @throws \InvalidArgumentException $includeRunning was not a boolean |
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| 103 | * @throws \InvalidArgumentException key in $fields was not a string |
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| 104 | * @throws \InvalidArgumentException value of $fields is not 1 or -1 for ascending and descending |
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| 105 | */ |
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| 106 | public function ensureCountIndex(array $fields, $includeRunning) |
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| 107 | { |
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| 108 | if (!is_bool($includeRunning)) { |
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| 109 | throw new \InvalidArgumentException('$includeRunning was not a boolean'); |
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| 110 | } |
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| 111 | |||
| 112 | $completeFields = []; |
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| 113 | |||
| 114 | if ($includeRunning) { |
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| 115 | $completeFields['running'] = 1; |
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| 116 | } |
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| 117 | |||
| 118 | self::verifySort($fields, 'fields', $completeFields); |
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| 119 | |||
| 120 | $this->ensureIndex($completeFields); |
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| 121 | } |
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| 122 | |||
| 123 | /** |
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| 124 | * Get a non running message from the queue. |
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| 125 | * |
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| 126 | * @param array $query in same format as \MongoDB\Collection::find() where top level fields do not contain operators. |
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| 127 | * Lower level fields can however. eg: valid {a: {$gt: 1}, "b.c": 3}, |
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| 128 | * invalid {$and: [{...}, {...}]} |
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| 129 | * @param int $runningResetDuration second duration the message can stay unacked before it resets and can be |
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| 130 | * retreived again. |
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| 131 | * @param int $waitDurationInMillis millisecond duration to wait for a message. |
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| 132 | * @param int $pollDurationInMillis millisecond duration to wait between polls. |
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| 133 | * |
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| 134 | * @return array|null the message or null if one is not found |
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| 135 | * |
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| 136 | * @throws \InvalidArgumentException $runningResetDuration, $waitDurationInMillis or $pollDurationInMillis was not |
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| 137 | * an int |
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| 138 | * @throws \InvalidArgumentException key in $query was not a string |
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| 139 | */ |
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| 140 | public function get(array $query, $runningResetDuration, $waitDurationInMillis = 3000, $pollDurationInMillis = 200) |
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| 141 | { |
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| 142 | if (!is_int($runningResetDuration)) { |
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| 143 | throw new \InvalidArgumentException('$runningResetDuration was not an int'); |
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| 144 | } |
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| 145 | |||
| 146 | if (!is_int($waitDurationInMillis)) { |
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| 147 | throw new \InvalidArgumentException('$waitDurationInMillis was not an int'); |
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| 148 | } |
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| 149 | |||
| 150 | if (!is_int($pollDurationInMillis)) { |
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| 151 | throw new \InvalidArgumentException('$pollDurationInMillis was not an int'); |
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| 152 | } |
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| 153 | |||
| 154 | if ($pollDurationInMillis < 0) { |
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| 155 | $pollDurationInMillis = 0; |
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| 156 | } |
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| 157 | |||
| 158 | //reset stuck messages |
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| 159 | $this->collection->updateMany( |
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| 160 | ['running' => true, 'resetTimestamp' => ['$lte' => new \MongoDB\BSON\UTCDateTime(microtime(true) * 1000)]], |
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| 161 | ['$set' => ['running' => false]] |
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| 162 | ); |
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| 163 | |||
| 164 | $completeQuery = ['running' => false]; |
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| 165 | View Code Duplication | foreach ($query as $key => $value) { |
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| 166 | if (!is_string($key)) { |
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| 167 | throw new \InvalidArgumentException('key in $query was not a string'); |
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| 168 | } |
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| 169 | |||
| 170 | $completeQuery["payload.{$key}"] = $value; |
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| 171 | } |
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| 172 | |||
| 173 | $completeQuery['earliestGet'] = ['$lte' => new \MongoDB\BSON\UTCDateTime(microtime(true) * 1000)]; |
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| 174 | |||
| 175 | $resetTimestamp = time() + $runningResetDuration; |
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| 176 | //ints overflow to floats |
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| 177 | if (!is_int($resetTimestamp)) { |
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| 178 | $resetTimestamp = $runningResetDuration > 0 ? self::MONGO_INT32_MAX : 0; |
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| 179 | } |
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| 180 | |||
| 181 | $update = ['$set' => ['resetTimestamp' => new \MongoDB\BSON\UTCDateTime($resetTimestamp * 1000), 'running' => true]]; |
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| 182 | $fields = ['payload' => 1]; |
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0 ignored issues
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| 183 | $options = ['sort' => ['priority' => 1, 'created' => 1]]; |
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| 184 | |||
| 185 | //ints overflow to floats, should be fine |
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| 186 | $end = microtime(true) + ($waitDurationInMillis / 1000.0); |
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| 187 | |||
| 188 | $sleepTime = $pollDurationInMillis * 1000; |
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| 189 | //ints overflow to floats and already checked $pollDurationInMillis was positive |
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| 190 | if (!is_int($sleepTime)) { |
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| 191 | //ignore since testing a giant sleep takes too long |
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| 192 | //@codeCoverageIgnoreStart |
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| 193 | $sleepTime = PHP_INT_MAX; |
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| 194 | } //@codeCoverageIgnoreEnd |
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| 195 | |||
| 196 | while (true) { |
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| 197 | $message = $this->collection->findOneAndUpdate($completeQuery, $update, $options); |
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| 198 | //checking if _id exist because findAndModify doesnt seem to return null when it can't match the query on |
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| 199 | //older mongo extension |
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| 200 | if ($message !== null && array_key_exists('_id', $message)) { |
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| 201 | // findOneAndUpdate does not correctly return result according to typeMap options so just refetch. |
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| 202 | $message = $this->collection->findOne(['_id' => $message->_id]); |
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| 203 | //id on left of union operator so a possible id in payload doesnt wipe it out the generated one |
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| 204 | return ['id' => $message['_id']] + (array)$message['payload']; |
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| 205 | } |
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| 206 | |||
| 207 | if (microtime(true) >= $end) { |
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| 208 | return null; |
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| 209 | } |
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| 210 | |||
| 211 | usleep($sleepTime); |
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| 212 | } |
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| 213 | |||
| 214 | //ignore since always return from the function from the while loop |
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| 215 | //@codeCoverageIgnoreStart |
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| 216 | } |
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| 217 | //@codeCoverageIgnoreEnd |
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| 218 | |||
| 219 | /** |
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| 220 | * Count queue messages. |
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| 221 | * |
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| 222 | * @param array $query in same format as \MongoDB\Collection::find() where top level fields do not contain operators. |
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| 223 | * Lower level fields can however. eg: valid {a: {$gt: 1}, "b.c": 3}, invalid {$and: [{...}, {...}]} |
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| 224 | * @param bool|null $running query a running message or not or all |
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| 225 | * |
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| 226 | * @return int the count |
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| 227 | * |
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| 228 | * @throws \InvalidArgumentException $running was not null and not a bool |
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| 229 | * @throws \InvalidArgumentException key in $query was not a string |
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| 230 | */ |
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| 231 | public function count(array $query, $running = null) |
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| 232 | { |
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| 233 | if ($running !== null && !is_bool($running)) { |
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| 234 | throw new \InvalidArgumentException('$running was not null and not a bool'); |
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| 235 | } |
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| 236 | |||
| 237 | $totalQuery = []; |
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| 238 | |||
| 239 | if ($running !== null) { |
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| 240 | $totalQuery['running'] = $running; |
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| 241 | } |
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| 242 | |||
| 243 | View Code Duplication | foreach ($query as $key => $value) { |
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| 244 | if (!is_string($key)) { |
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| 245 | throw new \InvalidArgumentException('key in $query was not a string'); |
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| 246 | } |
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| 247 | |||
| 248 | $totalQuery["payload.{$key}"] = $value; |
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| 249 | } |
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| 250 | |||
| 251 | return $this->collection->count($totalQuery); |
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| 252 | } |
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| 253 | |||
| 254 | /** |
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| 255 | * Acknowledge a message was processed and remove from queue. |
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| 256 | * |
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| 257 | * @param array $message message received from get() |
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| 258 | * |
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| 259 | * @return void |
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| 260 | * |
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| 261 | * @throws \InvalidArgumentException $message does not have a field "id" that is a MongoDB\BSON\ObjectID |
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| 262 | */ |
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| 263 | public function ack(array $message) |
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| 264 | { |
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| 265 | $id = null; |
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| 266 | if (array_key_exists('id', $message)) { |
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| 267 | $id = $message['id']; |
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| 268 | } |
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| 269 | |||
| 270 | if (!($id instanceof \MongoDB\BSON\ObjectID)) { |
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0 ignored issues
–
show
The class
MongoDB\BSON\ObjectID does not exist. Did you forget a USE statement, or did you not list all dependencies?
This error could be the result of: 1. Missing dependenciesPHP Analyzer uses your Are you sure this class is defined by one of your dependencies, or did you maybe
not list a dependency in either the 2. Missing use statementPHP does not complain about undefined classes in if ($x instanceof DoesNotExist) {
// Do something.
}
If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
|
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| 271 | throw new \InvalidArgumentException('$message does not have a field "id" that is a ObjectID'); |
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| 272 | } |
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| 273 | |||
| 274 | $this->collection->deleteOne(['_id' => $id]); |
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| 275 | } |
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| 276 | |||
| 277 | /** |
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| 278 | * Atomically acknowledge and send a message to the queue. |
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| 279 | * |
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| 280 | * @param array $message the message to ack received from get() |
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| 281 | * @param array $payload the data to store in the message to send. Data is handled same way |
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| 282 | * as \MongoDB\Collection::insertOne() |
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| 283 | * @param int $earliestGet earliest unix timestamp the message can be retreived. |
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| 284 | * @param float $priority priority for order out of get(). 0 is higher priority than 1 |
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| 285 | * @param bool $newTimestamp true to give the payload a new timestamp or false to use given message timestamp |
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| 286 | * |
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| 287 | * @return void |
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| 288 | * |
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| 289 | * @throws \InvalidArgumentException $message does not have a field "id" that is a ObjectID |
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| 290 | * @throws \InvalidArgumentException $earliestGet was not an int |
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| 291 | * @throws \InvalidArgumentException $priority was not a float |
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| 292 | * @throws \InvalidArgumentException $priority is NaN |
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| 293 | * @throws \InvalidArgumentException $newTimestamp was not a bool |
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| 294 | */ |
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| 295 | public function ackSend(array $message, array $payload, $earliestGet = 0, $priority = 0.0, $newTimestamp = true) |
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| 296 | { |
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| 297 | $id = null; |
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| 298 | if (array_key_exists('id', $message)) { |
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| 299 | $id = $message['id']; |
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| 300 | } |
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| 301 | |||
| 302 | if (!($id instanceof \MongoDB\BSON\ObjectId)) { |
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|
0 ignored issues
–
show
The class
MongoDB\BSON\ObjectID does not exist. Did you forget a USE statement, or did you not list all dependencies?
This error could be the result of: 1. Missing dependenciesPHP Analyzer uses your Are you sure this class is defined by one of your dependencies, or did you maybe
not list a dependency in either the 2. Missing use statementPHP does not complain about undefined classes in if ($x instanceof DoesNotExist) {
// Do something.
}
If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
|
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| 303 | throw new \InvalidArgumentException('$message does not have a field "id" that is a ObjectId'); |
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| 304 | } |
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| 305 | |||
| 306 | if (!is_int($earliestGet)) { |
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| 307 | throw new \InvalidArgumentException('$earliestGet was not an int'); |
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| 308 | } |
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| 309 | |||
| 310 | if (!is_float($priority)) { |
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| 311 | throw new \InvalidArgumentException('$priority was not a float'); |
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| 312 | } |
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| 313 | |||
| 314 | if (is_nan($priority)) { |
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| 315 | throw new \InvalidArgumentException('$priority was NaN'); |
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| 316 | } |
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| 317 | |||
| 318 | if ($newTimestamp !== true && $newTimestamp !== false) { |
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| 319 | throw new \InvalidArgumentException('$newTimestamp was not a bool'); |
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| 320 | } |
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| 321 | |||
| 322 | //Ensure $earliestGet is between 0 and MONGO_INT32_MAX |
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| 323 | $earliestGet = min(max(0, $earliestGet), self::MONGO_INT32_MAX); |
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| 324 | |||
| 325 | $toSet = [ |
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| 326 | 'payload' => $payload, |
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| 327 | 'running' => false, |
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| 328 | 'resetTimestamp' => new \MongoDB\BSON\UTCDateTime(self::MONGO_INT32_MAX), |
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| 329 | 'earliestGet' => new \MongoDB\BSON\UTCDateTime($earliestGet), |
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| 330 | 'priority' => $priority, |
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| 331 | ]; |
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| 332 | if ($newTimestamp) { |
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| 333 | $toSet['created'] = new \MongoDB\BSON\UTCDateTime(microtime(true) * 1000); |
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| 334 | } |
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| 335 | |||
| 336 | //using upsert because if no documents found then the doc was removed (SHOULD ONLY HAPPEN BY SOMEONE MANUALLY) |
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| 337 | //so we can just send |
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| 338 | $this->collection->updateOne(['_id' => $id], ['$set' => $toSet], ['upsert' => true]); |
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| 339 | } |
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| 340 | |||
| 341 | /** |
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| 342 | * Requeue message to the queue. Same as ackSend() with the same message. |
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| 343 | * |
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| 344 | * @param array $message message received from get(). |
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| 345 | * @param int $earliestGet earliest unix timestamp the message can be retreived. |
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| 346 | * @param float $priority priority for order out of get(). 0 is higher priority than 1 |
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| 347 | * @param bool $newTimestamp true to give the payload a new timestamp or false to use given message timestamp |
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| 348 | * |
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| 349 | * @return void |
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| 350 | * |
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| 351 | * @throws \InvalidArgumentException $message does not have a field "id" that is a ObjectId |
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| 352 | * @throws \InvalidArgumentException $earliestGet was not an int |
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| 353 | * @throws \InvalidArgumentException $priority was not a float |
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| 354 | * @throws \InvalidArgumentException priority is NaN |
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| 355 | * @throws \InvalidArgumentException $newTimestamp was not a bool |
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| 356 | */ |
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| 357 | public function requeue(array $message, $earliestGet = 0, $priority = 0.0, $newTimestamp = true) |
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| 358 | { |
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| 359 | $forRequeue = $message; |
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| 360 | unset($forRequeue['id']); |
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| 361 | $this->ackSend($message, $forRequeue, $earliestGet, $priority, $newTimestamp); |
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| 362 | } |
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| 363 | |||
| 364 | /** |
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| 365 | * Send a message to the queue. |
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| 366 | * |
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| 367 | * @param array $payload the data to store in the message. Data is handled same way as \MongoDB\Collection::insertOne() |
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| 368 | * @param int $earliestGet earliest unix timestamp the message can be retreived. |
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| 369 | * @param float $priority priority for order out of get(). 0 is higher priority than 1 |
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| 370 | * |
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| 371 | * @return void |
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| 372 | * |
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| 373 | * @throws \InvalidArgumentException $earliestGet was not an int |
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| 374 | * @throws \InvalidArgumentException $priority was not a float |
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| 375 | * @throws \InvalidArgumentException $priority is NaN |
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| 376 | */ |
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| 377 | public function send(array $payload, $earliestGet = 0, $priority = 0.0) |
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| 378 | { |
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| 379 | if (!is_int($earliestGet)) { |
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| 380 | throw new \InvalidArgumentException('$earliestGet was not an int'); |
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| 381 | } |
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| 382 | |||
| 383 | if (!is_float($priority)) { |
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| 384 | throw new \InvalidArgumentException('$priority was not a float'); |
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| 385 | } |
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| 386 | |||
| 387 | if (is_nan($priority)) { |
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| 388 | throw new \InvalidArgumentException('$priority was NaN'); |
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| 389 | } |
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| 390 | |||
| 391 | //Ensure $earliestGet is between 0 and MONGO_INT32_MAX |
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| 392 | $earliestGet = min(max(0, $earliestGet), self::MONGO_INT32_MAX); |
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| 393 | |||
| 394 | $message = [ |
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| 395 | 'payload' => $payload, |
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| 396 | 'running' => false, |
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| 397 | 'resetTimestamp' => new \MongoDB\BSON\UTCDateTime(self::MONGO_INT32_MAX * 1000), |
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| 398 | 'earliestGet' => new \MongoDB\BSON\UTCDateTime($earliestGet * 1000), |
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| 399 | 'priority' => $priority, |
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| 400 | 'created' => new \MongoDB\BSON\UTCDateTime(microtime(true) * 1000), |
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| 401 | ]; |
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| 402 | |||
| 403 | $this->collection->insertOne($message); |
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| 404 | } |
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| 405 | |||
| 406 | /** |
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| 407 | * Ensure index of correct specification and a unique name whether the specification or name already exist or not. |
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| 408 | * Will not create index if $index is a prefix of an existing index |
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| 409 | * |
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| 410 | * @param array $index index to create in same format as \MongoDB\Collection::createIndex() |
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| 411 | * |
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| 412 | * @return void |
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| 413 | * |
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| 414 | * @throws \Exception couldnt create index after 5 attempts |
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| 415 | */ |
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| 416 | private function ensureIndex(array $index) |
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| 417 | { |
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| 418 | //if $index is a prefix of any existing index we are good |
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| 419 | foreach ($this->collection->listIndexes() as $existingIndex) { |
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| 420 | $slice = array_slice($existingIndex['key'], 0, count($index), true); |
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| 421 | if ($slice === $index) { |
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| 422 | return; |
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| 423 | } |
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| 424 | } |
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| 425 | |||
| 426 | for ($i = 0; $i < 5; ++$i) { |
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| 427 | for ($name = uniqid(); strlen($name) > 0; $name = substr($name, 0, -1)) { |
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| 428 | //creating an index with same name and different spec does nothing. |
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| 429 | //creating an index with same spec and different name does nothing. |
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| 430 | //so we use any generated name, and then find the right spec after we have called, |
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| 431 | //and just go with that name. |
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| 432 | try { |
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| 433 | $this->collection->createIndex($index, ['name' => $name, 'background' => true]); |
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| 434 | } catch (\MongoDB\Exception\Exception $e) { |
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| 435 | //this happens when the name was too long, let continue |
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| 436 | } |
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| 437 | |||
| 438 | foreach ($this->collection->listIndexes() as $existingIndex) { |
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| 439 | if ($existingIndex['key'] === $index) { |
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| 440 | return; |
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| 441 | } |
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| 442 | } |
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| 443 | } |
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| 444 | } |
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| 445 | |||
| 446 | throw new \Exception('couldnt create index after 5 attempts'); |
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| 447 | } |
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| 448 | |||
| 449 | /** |
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| 450 | * Helper method to validate keys and values for the given sort array |
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| 451 | * |
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| 452 | * @param array $sort The proposed sort for a mongo index. |
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| 453 | * @param string $label The name of the variable given to the public ensureXIndex method. |
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| 454 | * @param array &$completedFields The final index array with payload. prefix added to fields. |
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| 455 | * |
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| 456 | * @return void |
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| 457 | */ |
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| 458 | private static function verifySort(array $sort, $label, &$completeFields) |
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| 459 | { |
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| 460 | foreach ($sort as $key => $value) { |
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| 461 | if (!is_string($key)) { |
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| 462 | throw new \InvalidArgumentException("key in \${$label} was not a string"); |
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| 463 | } |
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| 464 | |||
| 465 | if ($value !== 1 && $value !== -1) { |
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| 466 | throw new \InvalidArgumentException( |
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| 467 | "value of \${$label} is not 1 or -1 for ascending and descending" |
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| 468 | ); |
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| 469 | } |
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| 470 | |||
| 471 | $completeFields["payload.{$key}"] = $value; |
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| 472 | } |
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| 473 | } |
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| 474 | } |
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| 475 |
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.