public class FBUtilities
extends java.lang.Object
Modifier and Type | Field and Description |
---|---|
static int |
MAX_UNSIGNED_SHORT |
static java.math.BigInteger |
TWO |
static java.lang.String |
UNKNOWN_RELEASE_VERSION |
Constructor and Description |
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FBUtilities() |
Modifier and Type | Method and Description |
---|---|
static long |
abs(long index) |
static java.io.File |
cassandraTriggerDir() |
static <T> java.lang.Class<T> |
classForName(java.lang.String classname,
java.lang.String readable) |
static <T> CloseableIterator<T> |
closeableIterator(java.util.Iterator<T> iterator) |
static void |
closeAll(java.util.Collection<? extends java.lang.AutoCloseable> l) |
static int |
compareUnsigned(byte[] bytes1,
byte[] bytes2) |
static int |
compareUnsigned(byte[] bytes1,
byte[] bytes2,
int offset1,
int offset2,
int len1,
int len2) |
static <T> T |
construct(java.lang.String classname,
java.lang.String readable)
Constructs an instance of the given class, which must have a no-arg or default constructor.
|
static long |
copy(java.io.InputStream from,
java.io.OutputStream to,
long limit) |
static <T> java.util.NavigableSet<T> |
emptySortedSet(java.util.Comparator<? super T> comparator) |
static void |
exec(java.lang.ProcessBuilder pb)
Starts and waits for the given @param pb to finish.
|
static java.util.List<java.lang.String> |
fromJsonList(java.lang.String json) |
static java.util.Map<java.lang.String,java.lang.String> |
fromJsonMap(java.lang.String json) |
static java.util.Collection<java.net.InetAddress> |
getAllLocalAddresses() |
static int |
getAvailableProcessors() |
static java.net.InetAddress |
getBroadcastAddress() |
static java.net.InetAddress |
getBroadcastRpcAddress() |
static java.net.InetAddress |
getLocalAddress()
Please use getBroadcastAddress instead.
|
static java.lang.String |
getNetworkInterface(java.net.InetAddress localAddress) |
static java.lang.reflect.Field |
getProtectedField(java.lang.Class klass,
java.lang.String fieldName)
Used to get access to protected/private field of the specified class
|
static java.lang.String |
getReleaseVersionMajor() |
static java.lang.String |
getReleaseVersionString() |
static byte[] |
getThreadLocalScratchBuffer() |
static java.io.File |
getToolsOutputDirectory() |
static boolean |
hasProcFS() |
static <T> T |
instanceOrConstruct(java.lang.String classname,
java.lang.String readable)
Constructs an instance of the given class, which must have a no-arg or default constructor.
|
static boolean |
isWindows() |
static java.lang.String |
json(java.lang.Object object) |
static Pair<java.math.BigInteger,java.lang.Boolean> |
midpoint(java.math.BigInteger left,
java.math.BigInteger right,
int sigbits)
Given two bit arrays represented as BigIntegers, containing the given
number of significant bits, calculate a midpoint.
|
static IAuthenticator |
newAuthenticator(java.lang.String className) |
static IAuthorizer |
newAuthorizer(java.lang.String className) |
static java.security.MessageDigest |
newMessageDigest(java.lang.String algorithm) |
static IPartitioner |
newPartitioner(Descriptor desc)
Create a new instance of a partitioner defined in an SSTable Descriptor
|
static IPartitioner |
newPartitioner(java.lang.String partitionerClassName) |
static IRoleManager |
newRoleManager(java.lang.String className) |
static int |
nowInSeconds() |
static java.lang.String |
prettyPrintMemory(long size) |
protected static void |
reset() |
static java.lang.String |
resourceToFile(java.lang.String filename) |
static <T> byte[] |
serialize(T object,
IVersionedSerializer<T> serializer,
int version) |
static void |
setBroadcastInetAddress(java.net.InetAddress addr)
THIS IS FOR TESTING ONLY!!
|
static <T> java.util.NavigableSet<T> |
singleton(T column,
java.util.Comparator<? super T> comparator) |
static void |
sleepQuietly(long millis) |
static void |
sortSampledKeys(java.util.List<DecoratedKey> keys,
Range<Token> range) |
static java.security.MessageDigest |
threadLocalMD5Digest() |
static long |
timestampMicros() |
static java.lang.String |
toString(java.util.Map<?,?> map)
Make straing out of the given
Map . |
static byte[] |
toWriteUTFBytes(java.lang.String s) |
static void |
updateChecksum(java.util.zip.CRC32 checksum,
java.nio.ByteBuffer buffer)
Updates checksum with the provided ByteBuffer.
|
static void |
updateChecksum(java.util.zip.CRC32 checksum,
java.nio.ByteBuffer buffer,
int offset,
int length)
Updates checksum with the provided ByteBuffer at the given offset + length.
|
static void |
updateChecksumInt(java.util.zip.Checksum checksum,
int v) |
static void |
updateWithBoolean(java.security.MessageDigest digest,
boolean val) |
static void |
updateWithByte(java.security.MessageDigest digest,
int val) |
static void |
updateWithInt(java.security.MessageDigest digest,
int val) |
static void |
updateWithLong(java.security.MessageDigest digest,
long val) |
static void |
updateWithShort(java.security.MessageDigest digest,
int val) |
static <T> java.util.concurrent.Future<? extends T> |
waitOnFirstFuture(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures) |
static <T> java.util.concurrent.Future<? extends T> |
waitOnFirstFuture(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures,
long delay)
Only wait for the first future to finish from a list of futures.
|
static <T> T |
waitOnFuture(java.util.concurrent.Future<T> future) |
static <T> java.util.List<T> |
waitOnFutures(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures) |
static <T> java.util.List<T> |
waitOnFutures(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures,
long timeout,
java.util.concurrent.TimeUnit units)
Block for a collection of futures, with optional timeout.
|
static void |
waitOnFutures(java.util.List<AsyncOneResponse<?>> results,
long ms) |
static byte[] |
xor(byte[] left,
byte[] right) |
public static final java.lang.String UNKNOWN_RELEASE_VERSION
public static final java.math.BigInteger TWO
public static final int MAX_UNSIGNED_SHORT
public static int getAvailableProcessors()
public static java.security.MessageDigest threadLocalMD5Digest()
public static java.security.MessageDigest newMessageDigest(java.lang.String algorithm)
public static java.net.InetAddress getLocalAddress()
public static java.net.InetAddress getBroadcastAddress()
public static void setBroadcastInetAddress(java.net.InetAddress addr)
public static java.net.InetAddress getBroadcastRpcAddress()
public static java.util.Collection<java.net.InetAddress> getAllLocalAddresses()
public static java.lang.String getNetworkInterface(java.net.InetAddress localAddress)
public static Pair<java.math.BigInteger,java.lang.Boolean> midpoint(java.math.BigInteger left, java.math.BigInteger right, int sigbits)
left
- The left point.right
- The right point.sigbits
- The number of bits in the points that are significant.public static int compareUnsigned(byte[] bytes1, byte[] bytes2, int offset1, int offset2, int len1, int len2)
public static int compareUnsigned(byte[] bytes1, byte[] bytes2)
public static byte[] xor(byte[] left, byte[] right)
public static void sortSampledKeys(java.util.List<DecoratedKey> keys, Range<Token> range)
public static java.lang.String resourceToFile(java.lang.String filename) throws ConfigurationException
ConfigurationException
public static java.io.File cassandraTriggerDir()
public static java.lang.String getReleaseVersionString()
public static java.lang.String getReleaseVersionMajor()
public static long timestampMicros()
public static int nowInSeconds()
public static <T> java.util.List<T> waitOnFutures(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures)
public static <T> java.util.List<T> waitOnFutures(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures, long timeout, java.util.concurrent.TimeUnit units)
futures
- timeout
- The number of units to wait in total. If this value is less than or equal to zero,
no tiemout value will be passed to Future.get()
.units
- The units of timeout.public static <T> T waitOnFuture(java.util.concurrent.Future<T> future)
public static void waitOnFutures(java.util.List<AsyncOneResponse<?>> results, long ms) throws java.util.concurrent.TimeoutException
java.util.concurrent.TimeoutException
public static <T> java.util.concurrent.Future<? extends T> waitOnFirstFuture(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures)
public static <T> java.util.concurrent.Future<? extends T> waitOnFirstFuture(java.lang.Iterable<? extends java.util.concurrent.Future<? extends T>> futures, long delay)
futures
- The futures to wait onpublic static IPartitioner newPartitioner(Descriptor desc) throws java.io.IOException
desc
- Descriptor of an sstablejava.io.IOException
public static IPartitioner newPartitioner(java.lang.String partitionerClassName) throws ConfigurationException
ConfigurationException
public static IAuthorizer newAuthorizer(java.lang.String className) throws ConfigurationException
ConfigurationException
public static IAuthenticator newAuthenticator(java.lang.String className) throws ConfigurationException
ConfigurationException
public static IRoleManager newRoleManager(java.lang.String className) throws ConfigurationException
ConfigurationException
public static <T> java.lang.Class<T> classForName(java.lang.String classname, java.lang.String readable) throws ConfigurationException
classname
- Fully qualified classname.readable
- Descriptive noun for the role the class plays.ConfigurationException
- If the class cannot be found.public static <T> T instanceOrConstruct(java.lang.String classname, java.lang.String readable) throws ConfigurationException
classname
- Fully qualified classname.readable
- Descriptive noun for the role the class plays.ConfigurationException
- If the class cannot be found.public static <T> T construct(java.lang.String classname, java.lang.String readable) throws ConfigurationException
classname
- Fully qualified classname.readable
- Descriptive noun for the role the class plays.ConfigurationException
- If the class cannot be found.public static <T> java.util.NavigableSet<T> singleton(T column, java.util.Comparator<? super T> comparator)
public static <T> java.util.NavigableSet<T> emptySortedSet(java.util.Comparator<? super T> comparator)
@Nonnull public static java.lang.String toString(@Nullable java.util.Map<?,?> map)
Map
.map
- Map to make string.public static java.lang.reflect.Field getProtectedField(java.lang.Class klass, java.lang.String fieldName)
klass
- - name of the classfieldName
- - name of the fieldpublic static <T> CloseableIterator<T> closeableIterator(java.util.Iterator<T> iterator)
public static java.util.Map<java.lang.String,java.lang.String> fromJsonMap(java.lang.String json)
public static java.util.List<java.lang.String> fromJsonList(java.lang.String json)
public static java.lang.String json(java.lang.Object object)
public static java.lang.String prettyPrintMemory(long size)
public static void exec(java.lang.ProcessBuilder pb) throws java.io.IOException
java.io.IOException
- on non-zero exit codepublic static void updateChecksumInt(java.util.zip.Checksum checksum, int v)
public static void updateChecksum(java.util.zip.CRC32 checksum, java.nio.ByteBuffer buffer, int offset, int length)
public static void updateChecksum(java.util.zip.CRC32 checksum, java.nio.ByteBuffer buffer)
public static byte[] getThreadLocalScratchBuffer()
public static long abs(long index)
public static <T> byte[] serialize(T object, IVersionedSerializer<T> serializer, int version)
public static long copy(java.io.InputStream from, java.io.OutputStream to, long limit) throws java.io.IOException
java.io.IOException
public static java.io.File getToolsOutputDirectory()
public static boolean isWindows()
public static boolean hasProcFS()
public static void updateWithShort(java.security.MessageDigest digest, int val)
public static void updateWithByte(java.security.MessageDigest digest, int val)
public static void updateWithInt(java.security.MessageDigest digest, int val)
public static void updateWithLong(java.security.MessageDigest digest, long val)
public static void updateWithBoolean(java.security.MessageDigest digest, boolean val)
public static void closeAll(java.util.Collection<? extends java.lang.AutoCloseable> l) throws java.lang.Exception
java.lang.Exception
public static byte[] toWriteUTFBytes(java.lang.String s)
public static void sleepQuietly(long millis)
protected static void reset()
Copyright © 2021 The Apache Software Foundation