Package org.redisson.api

Interface RStream<K,V>

Type Parameters:

K - key type

V - value type

All Superinterfaces:

RExpirable, RExpirableAsync, RObject, RObjectAsync, RStreamAsync<K,V>

All Known Implementing Classes:

RedissonStream

public interface RStream<K,V>
extends RStreamAsync<K,V>, RExpirable

Interface for Redis Stream object.

Requires Redis 5.0.0 and higher.

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
long	ack(String groupName, StreamMessageId... ids)	Marks pending messages by group name and stream ids as correctly processed.
StreamMessageId	add(StreamAddArgs<K,V> args)	Appends a new entry/entries and returns generated Stream Message ID
void	add(StreamMessageId id, StreamAddArgs<K,V> args)	Appends a new entry/entries by specified Stream Message ID
int	addListener(ObjectListener listener)	Adds object event listener
AutoClaimResult<K,V>	autoClaim(String groupName, String consumerName, long idleTime, TimeUnit idleTimeUnit, StreamMessageId startId, int count)	Transfers ownership of pending messages by id to a new consumer by name if idle time of messages and startId are greater than defined value.
Map<StreamMessageId,Map<K,V>>	claim(String groupName, String consumerName, long idleTime, TimeUnit idleTimeUnit, StreamMessageId... ids)	Transfers ownership of pending messages by id to a new consumer by name if idle time of messages is greater than defined value.
void	createConsumer(String groupName, String consumerName)	Creates consumer of the group by name.
void	createGroup(StreamCreateGroupArgs args)	Creates consumer group.
FastAutoClaimResult	fastAutoClaim(String groupName, String consumerName, long idleTime, TimeUnit idleTimeUnit, StreamMessageId startId, int count)	Transfers ownership of pending messages by id to a new consumer by name if idle time of messages and startId are greater than defined value.
List<StreamMessageId>	fastClaim(String groupName, String consumerName, long idleTime, TimeUnit idleTimeUnit, StreamMessageId... ids)	Transfers ownership of pending messages by id to a new consumer by name if idle time of messages is greater than defined value.
StreamInfo<K,V>	getInfo()	Returns information about this stream.
PendingResult	getPendingInfo(String groupName)	Returns common info about pending messages by group name.
List<StreamConsumer>	listConsumers(String groupName)	Returns list of common info about group customers for specified groupName.
List<StreamGroup>	listGroups()	Returns list of common info about groups belonging to this stream.
List<PendingEntry>	listPending(String groupName, String consumerName, StreamMessageId startId, StreamMessageId endId, int count)	Returns list of common info about pending messages by group and consumer name.
List<PendingEntry>	listPending(String groupName, String consumerName, StreamMessageId startId, StreamMessageId endId, long idleTime, TimeUnit idleTimeUnit, int count)	Returns stream data of pending messages by group and customer name.
List<PendingEntry>	listPending(String groupName, StreamMessageId startId, StreamMessageId endId, int count)	Returns list of common info about pending messages by group name.
List<PendingEntry>	listPending(String groupName, StreamMessageId startId, StreamMessageId endId, long idleTime, TimeUnit idleTimeUnit, int count)	Returns stream data of pending messages by group name.
Map<StreamMessageId,Map<K,V>>	pendingRange(String groupName, String consumerName, StreamMessageId startId, StreamMessageId endId, int count)	Returns stream data of pending messages by group and customer name.
Map<StreamMessageId,Map<K,V>>	pendingRange(String groupName, String consumerName, StreamMessageId startId, StreamMessageId endId, long idleTime, TimeUnit idleTimeUnit, int count)	Returns stream data of pending messages by group and customer name.
Map<StreamMessageId,Map<K,V>>	pendingRange(String groupName, StreamMessageId startId, StreamMessageId endId, int count)	Returns stream data of pending messages by group name.
Map<StreamMessageId,Map<K,V>>	pendingRange(String groupName, StreamMessageId startId, StreamMessageId endId, long idleTime, TimeUnit idleTimeUnit, int count)	Returns stream data of pending messages by group name.
Map<StreamMessageId,Map<K,V>>	range(int count, StreamMessageId startId, StreamMessageId endId)	Returns stream data in range by specified start Stream Message ID (included) and end Stream Message ID (included).
Map<StreamMessageId,Map<K,V>>	range(StreamMessageId startId, StreamMessageId endId)	Returns stream data in range by specified start Stream Message ID (included) and end Stream Message ID (included).
Map<StreamMessageId,Map<K,V>>	rangeReversed(int count, StreamMessageId startId, StreamMessageId endId)	Returns stream data in reverse order in range by specified start Stream Message ID (included) and end Stream Message ID (included).
Map<StreamMessageId,Map<K,V>>	rangeReversed(StreamMessageId startId, StreamMessageId endId)	Returns stream data in reverse order in range by specified start Stream Message ID (included) and end Stream Message ID (included).
Map<String,Map<StreamMessageId,Map<K,V>>>	read(StreamMultiReadArgs args)	Read stream data from multiple streams including current.
Map<StreamMessageId,Map<K,V>>	read(StreamReadArgs args)	Read stream data from current stream only.
Map<String,Map<StreamMessageId,Map<K,V>>>	readGroup(String groupName, String consumerName, StreamMultiReadGroupArgs args)	Read stream data from consumer group and multiple streams including current.
Map<StreamMessageId,Map<K,V>>	readGroup(String groupName, String consumerName, StreamReadGroupArgs args)	Read stream data from consumer group and current stream only.
long	remove(StreamMessageId... ids)	Removes messages by id.
long	removeConsumer(String groupName, String consumerName)	Removes consumer of the group by name.
void	removeGroup(String groupName)	Removes group by name.
long	size()	Returns number of entries in stream
long	trim(StreamTrimArgs args)	Trims stream using strict trimming.
long	trimNonStrict(StreamTrimArgs args)	Trims stream using non-strict trimming.
void	updateGroupMessageId(String groupName, StreamMessageId id)	Updates next message id delivered to consumers.

Methods inherited from interface org.redisson.api.RExpirable

clearExpire, expire, expire, expire, expireAt, expireAt, expireIfGreater, expireIfGreater, expireIfLess, expireIfLess, expireIfNotSet, expireIfNotSet, expireIfSet, expireIfSet, getExpireTime, remainTimeToLive

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAsync, expireAsync, expireAtAsync, expireAtAsync, expireIfGreaterAsync, expireIfGreaterAsync, expireIfLessAsync, expireIfLessAsync, expireIfNotSetAsync, expireIfNotSetAsync, expireIfSetAsync, expireIfSetAsync, getExpireTimeAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObject

copy, copy, copy, copyAndReplace, copyAndReplace, delete, dump, getCodec, getIdleTime, getName, isExists, migrate, move, removeListener, rename, renamenx, restore, restore, restoreAndReplace, restoreAndReplace, sizeInMemory, touch, unlink

Methods inherited from interface org.redisson.api.RObjectAsync

copyAndReplaceAsync, copyAndReplaceAsync, copyAsync, copyAsync, copyAsync, deleteAsync, dumpAsync, getIdleTimeAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemoryAsync, touchAsync, unlinkAsync

Methods inherited from interface org.redisson.api.RStreamAsync

ackAsync, addAsync, addAsync, addListenerAsync, autoClaimAsync, claimAsync, createConsumerAsync, createGroupAsync, fastAutoClaimAsync, fastClaimAsync, getInfoAsync, getPendingInfoAsync, listConsumersAsync, listGroupsAsync, listPendingAsync, listPendingAsync, listPendingAsync, listPendingAsync, pendingRangeAsync, pendingRangeAsync, pendingRangeAsync, pendingRangeAsync, rangeAsync, rangeAsync, rangeReversedAsync, rangeReversedAsync, readAsync, readAsync, readGroupAsync, readGroupAsync, removeAsync, removeConsumerAsync, removeGroupAsync, sizeAsync, trimAsync, trimNonStrictAsync, updateGroupMessageIdAsync

Method Details

createGroup

void createGroup(StreamCreateGroupArgs args)

Creates consumer group.

Usage examples:

 StreamMessageId id = stream.createGroup(StreamCreateGroupArgs.name("test").id(id).makeStream());
 

Parameters:

args - method arguments object

removeGroup

void removeGroup(String groupName)

Removes group by name.

Parameters:

groupName - - name of group

createConsumer

void createConsumer(String groupName,
 String consumerName)

Creates consumer of the group by name.

Requires Redis 6.2.0 and higher.

Parameters:

groupName - - name of group

consumerName - - name of consumer

removeConsumer

long removeConsumer(String groupName,
 String consumerName)

Removes consumer of the group by name.

Parameters:

groupName - - name of group

consumerName - - name of consumer

Returns:

number of pending messages owned by consumer

updateGroupMessageId

void updateGroupMessageId(String groupName,
 StreamMessageId id)

Updates next message id delivered to consumers.

Parameters:

groupName - - name of group

id - - Stream Message ID

ack

long ack(String groupName,
 StreamMessageId... ids)

Marks pending messages by group name and stream ids as correctly processed.

Parameters:

groupName - - name of group

ids - - Stream Message IDs

Returns:

marked messages amount

getPendingInfo

PendingResult getPendingInfo(String groupName)

Returns common info about pending messages by group name.

Parameters:

groupName - - name of group

Returns:

result object

listPending

List<PendingEntry> listPending(String groupName,
 StreamMessageId startId,
 StreamMessageId endId,
 int count)

Returns list of common info about pending messages by group name. Limited by start Stream Message ID and end Stream Message ID and count.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Parameters:

groupName - - name of group

startId - - start Stream Message ID

endId - - end Stream Message ID

count - - amount of messages

Returns:

list

See Also:

• RStreamAsync.pendingRangeAsync(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, int)

listPending

List<PendingEntry> listPending(String groupName,
 String consumerName,
 StreamMessageId startId,
 StreamMessageId endId,
 int count)

Returns list of common info about pending messages by group and consumer name. Limited by start Stream Message ID and end Stream Message ID and count.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Parameters:

groupName - - name of group

consumerName - - name of consumer

startId - - start Stream Message ID

endId - - end Stream Message ID

count - - amount of messages

Returns:

list

See Also:

• RStreamAsync.pendingRangeAsync(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, int)

listPending

List<PendingEntry> listPending(String groupName,
 StreamMessageId startId,
 StreamMessageId endId,
 long idleTime,
 TimeUnit idleTimeUnit,
 int count)

Returns stream data of pending messages by group name. Limited by minimum idle time, messages count, start and end Stream Message IDs.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Requires Redis 6.2.0 and higher.

Parameters:

groupName - - name of group

startId - - start Stream Message ID

endId - - end Stream Message ID

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

count - - amount of messages

Returns:

map

See Also:

• RStreamAsync.listPendingAsync(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, long, java.util.concurrent.TimeUnit, int)

listPending

List<PendingEntry> listPending(String groupName,
 String consumerName,
 StreamMessageId startId,
 StreamMessageId endId,
 long idleTime,
 TimeUnit idleTimeUnit,
 int count)

Returns stream data of pending messages by group and customer name. Limited by minimum idle time, messages count, start and end Stream Message IDs.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Requires Redis 6.2.0 and higher.

Parameters:

groupName - - name of group

consumerName - - name of consumer

startId - - start Stream Message ID

endId - - end Stream Message ID

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

count - - amount of messages

Returns:

map

See Also:

• RStreamAsync.listPendingAsync(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, long, java.util.concurrent.TimeUnit, int)

pendingRange

Map<StreamMessageId,Map<K,V>> pendingRange(String groupName,
 StreamMessageId startId,
 StreamMessageId endId,
 int count)

Returns stream data of pending messages by group name. Limited by start Stream Message ID and end Stream Message ID and count.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Parameters:

groupName - - name of group

startId - - start Stream Message ID

endId - - end Stream Message ID

count - - amount of messages

Returns:

map

See Also:

• listPending(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, int)

pendingRange

Map<StreamMessageId,Map<K,V>> pendingRange(String groupName,
 String consumerName,
 StreamMessageId startId,
 StreamMessageId endId,
 int count)

Returns stream data of pending messages by group and customer name. Limited by start Stream Message ID and end Stream Message ID and count.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Parameters:

groupName - - name of group

consumerName - - name of consumer

startId - - start Stream Message ID

endId - - end Stream Message ID

count - - amount of messages

Returns:

map

See Also:

• listPending(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, int)

pendingRange

Map<StreamMessageId,Map<K,V>> pendingRange(String groupName,
 StreamMessageId startId,
 StreamMessageId endId,
 long idleTime,
 TimeUnit idleTimeUnit,
 int count)

Returns stream data of pending messages by group name. Limited by minimum idle time, messages count, start and end Stream Message IDs.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Requires Redis 6.2.0 and higher.

Parameters:

groupName - - name of group

startId - - start Stream Message ID

endId - - end Stream Message ID

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

count - - amount of messages

Returns:

map

See Also:

• RStreamAsync.listPendingAsync(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, long, java.util.concurrent.TimeUnit, int)

pendingRange

Map<StreamMessageId,Map<K,V>> pendingRange(String groupName,
 String consumerName,
 StreamMessageId startId,
 StreamMessageId endId,
 long idleTime,
 TimeUnit idleTimeUnit,
 int count)

Returns stream data of pending messages by group and customer name. Limited by minimum idle time, messages count, start and end Stream Message IDs.

StreamMessageId.MAX is used as max Stream Message ID StreamMessageId.MIN is used as min Stream Message ID

Requires Redis 6.2.0 and higher.

Parameters:

groupName - - name of group

consumerName - - name of consumer

startId - - start Stream Message ID

endId - - end Stream Message ID

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

count - - amount of messages

Returns:

map

See Also:

• RStreamAsync.listPendingAsync(java.lang.String, org.redisson.api.StreamMessageId, org.redisson.api.StreamMessageId, long, java.util.concurrent.TimeUnit, int)

autoClaim

AutoClaimResult<K,V> autoClaim(String groupName,
 String consumerName,
 long idleTime,
 TimeUnit idleTimeUnit,
 StreamMessageId startId,
 int count)

Transfers ownership of pending messages by id to a new consumer by name if idle time of messages and startId are greater than defined value.

Parameters:

groupName - - name of group

consumerName - - name of consumer

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

startId - - start Stream Message ID

Returns:

stream data mapped by Stream ID

claim

Map<StreamMessageId,Map<K,V>> claim(String groupName,
 String consumerName,
 long idleTime,
 TimeUnit idleTimeUnit,
 StreamMessageId... ids)

Transfers ownership of pending messages by id to a new consumer by name if idle time of messages is greater than defined value.

Parameters:

groupName - - name of group

consumerName - - name of consumer

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

ids - - Stream Message IDs

Returns:

stream data mapped by Stream Message ID

fastClaim

List<StreamMessageId> fastClaim(String groupName,
 String consumerName,
 long idleTime,
 TimeUnit idleTimeUnit,
 StreamMessageId... ids)

Transfers ownership of pending messages by id to a new consumer by name if idle time of messages is greater than defined value.

Parameters:

groupName - - name of group

consumerName - - name of consumer

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

ids - - Stream Message IDs

Returns:

list of Stream Message IDs

fastAutoClaim

FastAutoClaimResult fastAutoClaim(String groupName,
 String consumerName,
 long idleTime,
 TimeUnit idleTimeUnit,
 StreamMessageId startId,
 int count)

Transfers ownership of pending messages by id to a new consumer by name if idle time of messages and startId are greater than defined value.

Parameters:

groupName - - name of group

consumerName - - name of consumer

idleTime - - minimum idle time of messages

idleTimeUnit - - idle time unit

startId - - start Stream Message ID

Returns:

list of Stream Message IDs

readGroup

Map<String,Map<StreamMessageId,Map<K,V>>> readGroup(String groupName,
 String consumerName,
 StreamMultiReadGroupArgs args)

Read stream data from consumer group and multiple streams including current.

Usage examples:

 Map result = stream.read("group1", "consumer1",  StreamMultiReadGroupArgs.greaterThan(id, "stream2", id2));
 

 Map result = stream.read("group1", "consumer1", StreamMultiReadGroupArgs.greaterThan(id, "stream2", id2)
                                                                          .count(100)
                                                                          .timeout(Duration.ofSeconds(5))));
 

Parameters:

args - - method arguments object

Returns:

stream data mapped by stream name and Stream Message ID

readGroup

Map<StreamMessageId,Map<K,V>> readGroup(String groupName,
 String consumerName,
 StreamReadGroupArgs args)

Read stream data from consumer group and current stream only.

Usage examples:

 Map result = stream.read("group1", "consumer1",  StreamReadGroupArgs.greaterThan(id));
 

 Map result = stream.read("group1", "consumer1", StreamReadGroupArgs.greaterThan(id)
                                                                          .count(100)
                                                                          .timeout(Duration.ofSeconds(5))));
 

Parameters:

args - - method arguments object

Returns:

stream data mapped by Stream Message ID

size

long size()

Returns number of entries in stream

Returns:

size of stream

add

StreamMessageId add(StreamAddArgs<K,V> args)

Appends a new entry/entries and returns generated Stream Message ID

Usage examples:

 StreamMessageId id = stream.add(StreamAddArgs.entry(15, 37));
 

 StreamMessageId id = stream.add(StreamAddArgs.entries(15, 37, 23, 43)
                                 .trim(TrimStrategy.MAXLEN, 100)));
 

Parameters:

args - - method arguments object

Returns:

Stream Message ID

add

void add(StreamMessageId id,
 StreamAddArgs<K,V> args)

Appends a new entry/entries by specified Stream Message ID

Usage examples:

 stream.add(id, StreamAddArgs.entry(15, 37));
 

 stream.add(id, StreamAddArgs.entries(15, 37, 23, 43)
                                 .trim(TrimStrategy.MAXLEN, 100)));
 

Parameters:

id - - Stream Message ID

args - - method arguments object

read

Map<String,Map<StreamMessageId,Map<K,V>>> read(StreamMultiReadArgs args)

Read stream data from multiple streams including current.

Usage examples:

 Map result = stream.read(StreamMultiReadArgs.greaterThan(id, "stream2", id2));
 

 Map result = stream.read(StreamMultiReadArgs.greaterThan(id, "stream2", id2)
                                 .count(100)
                                 .timeout(Duration.ofSeconds(5))));
 

Parameters:

args - - method arguments object

Returns:

stream data mapped by stream name and Stream Message ID

read

Map<StreamMessageId,Map<K,V>> read(StreamReadArgs args)

Read stream data from current stream only.

Usage examples:

 Map result = stream.read(StreamReadArgs.greaterThan(id));
 

 Map result = stream.read(StreamReadArgs.greaterThan(id)
                                 .count(100)
                                 .timeout(Duration.ofSeconds(5))));
 

Parameters:

args - - method arguments object

Returns:

stream data mapped by Stream Message ID

range

Map<StreamMessageId,Map<K,V>> range(StreamMessageId startId,
 StreamMessageId endId)

Returns stream data in range by specified start Stream Message ID (included) and end Stream Message ID (included).

Parameters:

startId - - start Stream Message ID

endId - - end Stream Message ID

Returns:

stream data mapped by Stream Message ID

range

Map<StreamMessageId,Map<K,V>> range(int count,
 StreamMessageId startId,
 StreamMessageId endId)

Returns stream data in range by specified start Stream Message ID (included) and end Stream Message ID (included).

Parameters:

count - - stream data size limit

startId - - start Stream Message ID

endId - - end Stream Message ID

Returns:

stream data mapped by Stream Message ID

rangeReversed

Map<StreamMessageId,Map<K,V>> rangeReversed(StreamMessageId startId,
 StreamMessageId endId)

Returns stream data in reverse order in range by specified start Stream Message ID (included) and end Stream Message ID (included).

Parameters:

startId - - start Stream Message ID

endId - - end Stream Message ID

Returns:

stream data mapped by Stream Message ID

rangeReversed

Map<StreamMessageId,Map<K,V>> rangeReversed(int count,
 StreamMessageId startId,
 StreamMessageId endId)

Returns stream data in reverse order in range by specified start Stream Message ID (included) and end Stream Message ID (included).

Parameters:

count - - stream data size limit

startId - - start Stream Message ID

endId - - end Stream Message ID

Returns:

stream data mapped by Stream Message ID

remove

long remove(StreamMessageId... ids)

Removes messages by id.

Parameters:

ids - - id of messages to remove

Returns:

deleted messages amount

trim

long trim(StreamTrimArgs args)

Trims stream using strict trimming.

Usage example:

 long result = stream.trim(StreamTrimArgs.maxLen(100).noLimit());
 

Parameters:

args - - method arguments object

Returns:

number of deleted messages

trimNonStrict

long trimNonStrict(StreamTrimArgs args)

Trims stream using non-strict trimming.

Usage example:

 long result = stream.trimNonStrict(StreamTrimArgs.maxLen(100).noLimit());
 

Parameters:

args - - method arguments object

Returns:

number of deleted messages

getInfo

StreamInfo<K,V> getInfo()

Returns information about this stream.

Returns:

info object

listGroups

List<StreamGroup> listGroups()

Returns list of common info about groups belonging to this stream.

Returns:

list of info objects

listConsumers

List<StreamConsumer> listConsumers(String groupName)

Returns list of common info about group customers for specified groupName.

Parameters:

groupName - - name of group

Returns:

list of info objects

addListener

int addListener(ObjectListener listener)

Adds object event listener

Specified by:

addListener in interface RObject

Parameters:

listener - - object event listener

Returns:

listener id

See Also:

• TrackingListener
• StreamAddListener
• StreamRemoveListener
• StreamCreateGroupListener
• StreamRemoveGroupListener
• StreamCreateConsumerListener
• StreamRemoveConsumerListener
• StreamTrimListener
• ExpiredObjectListener
• DeletedObjectListener