@RrdBackendAnnotation(name="SAFE", shouldValidateHeader=true, cachingAllowed=false) public class RrdSafeFileBackendFactory extends RrdRandomAccessFileBackendFactory
RrdSafeFileBackend
objects.Modifier and Type | Field and Description |
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static long |
LOCK_RETRY_PERIOD
Default time between two consecutive file locking attempts.
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static long |
LOCK_WAIT_TIME
Default time (in milliseconds) this backend will wait for a file lock.
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cachingAllowed, DEFAULTFACTORY, name, scheme, validateHeader
Constructor and Description |
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RrdSafeFileBackendFactory()
Generate a factory using the default system wide lock settings
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RrdSafeFileBackendFactory(long lockWaitTime,
long lockRetryPeriod)
Generate a factory with custom lock settings
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Modifier and Type | Method and Description |
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static long |
getLockRetryPeriod()
Returns time between two consecutive file locking attempts.
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static long |
getLockWaitTime()
Returns time this backend will wait for a file lock.
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protected RrdBackend |
open(String path,
boolean readOnly)
Creates RrdFileBackend object for the given file path.
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static void |
setLockRetryPeriod(long lockRetryPeriod)
Sets time between two consecutive file locking attempts.
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static void |
setLockWaitTime(long lockWaitTime)
Sets time this backend will wait for a file lock.
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canStore, exists, getCanonicalUri, getPath, getUri
addActiveFactories, addFactories, buildGenericUri, checkClosing, close, exists, findFactory, getBackend, getBackend, getDefaultFactory, getFactory, getName, getRootUri, getScheme, registerAndSetAsDefaultFactory, registerFactory, resolve, setActiveFactories, setDefaultFactory, shouldValidateHeader, shouldValidateHeader
public static final long LOCK_WAIT_TIME
public static final long LOCK_RETRY_PERIOD
public RrdSafeFileBackendFactory()
public RrdSafeFileBackendFactory(long lockWaitTime, long lockRetryPeriod)
lockWaitTime
- wait time in mslockRetryPeriod
- retry period in msprotected RrdBackend open(String path, boolean readOnly) throws IOException
open
in class RrdRandomAccessFileBackendFactory
IOException
public static long getLockWaitTime()
public static void setLockWaitTime(long lockWaitTime)
lockWaitTime
- Maximum lock wait time (in milliseconds)public static long getLockRetryPeriod()
public static void setLockRetryPeriod(long lockRetryPeriod)
lockRetryPeriod
- time (in milliseconds) between two consecutive file locking attempts.