PostgreSqlLockManager Class Reference
PostgreSQL version of DBLockManager that supports shared locks. More...
Inheritance diagram for PostgreSqlLockManager:
Collaboration diagram for PostgreSqlLockManager:
Protected Member Functions | |
| doGetLocksOnServer ($lockSrv, array $paths, $type) | |
| releaseAllLocks () | |
 Protected Member Functions inherited from DBLockManager | |
| cacheCheckFailures ($lockDb) | |
| Checks if the DB has not recently had connection/query errors. More... | |
| cacheRecordFailure ($lockDb) | |
| Log a lock request failure to the cache. More... | |
| doGetLocksOnServer ($lockSrv, array $paths, $type) | |
| freeLocksOnServer ($lockSrv, array $pathsByType) | |
| getConnection ($lockDb) | |
| Get (or reuse) a connection to a lock DB. More... | |
| getLocksOnServer ($lockSrv, array $pathsByType) | |
| change this code to work in one batch More... | |
| getMissKey ($lockDb) | |
| Get a cache key for recent query misses for a DB. More... | |
| initConnection ($lockDb, IDatabase $db) | |
| Do additional initialization for new lock DB connection. More... | |
| isServerUp ($lockSrv) | |
| Protected Member Functions inherited from QuorumLockManager | |
| doLock (array $paths, $type) | |
| doLockByType (array $pathsByType) | |
| doLockingRequestBucket ($bucket, array $pathsByType) | |
| Attempt to acquire locks with the peers for a bucket. More... | |
| doUnlock (array $paths, $type) | |
| doUnlockByType (array $pathsByType) | |
| doUnlockingRequestBucket ($bucket, array $pathsByType) | |
| Attempt to release locks with the peers for a bucket. More... | |
| freeLocksOnServer ($lockSrv, array $pathsByType) | |
| Get a connection to a lock server and release locks on $paths. More... | |
| getBucketFromPath ($path) | |
| Get the bucket for resource path. More... | |
| getLocksOnServer ($lockSrv, array $pathsByType) | |
| Get a connection to a lock server and acquire locks. More... | |
| isServerUp ($lockSrv) | |
| Check if a lock server is up. More... | |
| releaseAllLocks () | |
| Release all locks that this session is holding. More... | |
| Protected Member Functions inherited from LockManager | |
| doLock (array $paths, $type) | |
| Lock resources with the given keys and lock type. More... | |
| doLockByType (array $pathsByType) | |
| doUnlock (array $paths, $type) | |
| Unlock resources with the given keys and lock type. More... | |
| doUnlockByType (array $pathsByType) | |
| normalizePathsByType (array $pathsByType) | |
| Normalize the $paths array by converting LOCK_UW locks into the appropriate type and removing any duplicated paths for each lock type. More... | |
| sha1Base16Absolute ($path) | |
| Get the base 16 SHA-1 of a string, padded to 31 digits. More... | |
| sha1Base36Absolute ($path) | |
| Get the base 36 SHA-1 of a string, padded to 31 digits. More... | |
Protected Attributes | |
| array | $lockTypeMap |
| Mapping of lock types to the type actually used. More... | |
| Protected Attributes inherited from DBLockManager | |
| IDatabase[] | $conns = [] |
| Map Database connections (DB name => Database) More... | |
| array[] IDatabase[] | $dbServers |
| Map of (DB names => server config or IDatabase) More... | |
| $lockExpiry | |
| $safeDelay | |
| BagOStuff | $statusCache |
| Protected Attributes inherited from QuorumLockManager | |
| array | $degradedBuckets = [] |
| Map of degraded buckets. More... | |
| array | $srvsByBucket = [] |
| Map of bucket indexes to peer server lists. More... | |
| Protected Attributes inherited from LockManager | |
| $domain | |
| array | $locksHeld = [] |
| Map of (resource path => lock type => count) More... | |
| $lockTTL | |
| array | $lockTypeMap |
| Mapping of lock types to the type actually used. More... | |
| LoggerInterface | $logger |
| string | $session |
| Random 32-char hex number. More... | |
Additional Inherited Members | |
| Public Member Functions inherited from DBLockManager | |
| __construct (array $config) | |
| Construct a new instance from configuration. More... | |
| __destruct () | |
| Make sure remaining locks get cleared for sanity. More... | |
| Public Member Functions inherited from LockManager | |
| __construct (array $config) | |
| Construct a new instance from configuration. More... | |
| lock (array $paths, $type=self::LOCK_EX, $timeout=0) | |
| Lock the resources at the given abstract paths. More... | |
| lockByType (array $pathsByType, $timeout=0) | |
| Lock the resources at the given abstract paths. More... | |
| unlock (array $paths, $type=self::LOCK_EX) | |
| Unlock the resources at the given abstract paths. More... | |
| unlockByType (array $pathsByType) | |
| Unlock the resources at the given abstract paths. More... | |
| Public Attributes inherited from LockManager | |
| const | LOCK_EX = 3 |
| const | LOCK_SH = 1 |
| Lock types; stronger locks have higher values. More... | |
| const | LOCK_UW = 2 |
Detailed Description
PostgreSQL version of DBLockManager that supports shared locks.
All locks are non-blocking, which avoids deadlocks.
Definition at line 8 of file PostgreSqlLockManager.php.
Member Function Documentation
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protected |
Definition at line 16 of file PostgreSqlLockManager.php.
References $path, $res, $status, $type, as, DBLockManager\getConnection(), and StatusValue\newGood().
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protected |
- Returns
- StatusValue
Definition at line 66 of file PostgreSqlLockManager.php.
References $e, $status, as, and StatusValue\newGood().
Member Data Documentation
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protected |
Initial value:
= [
self::LOCK_SH => self::LOCK_SH
Mapping of lock types to the type actually used.
Definition at line 10 of file PostgreSqlLockManager.php.
The documentation for this class was generated from the following file:
- includes/libs/lockmanager/PostgreSqlLockManager.php
