org.redisson.api.RKeysRx Maven / Gradle / Ivy
/**
* Copyright 2018 Nikita Koksharov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.redisson.api;
import java.util.Collection;
import java.util.concurrent.TimeUnit;
import io.reactivex.Flowable;
/**
*
* @author Nikita Koksharov
*
*/
public interface RKeysRx {
/**
* Move object to another database
*
* @param name of object
* @param database - Redis database number
* @return true if key was moved else false
*/
Flowable move(String name, int database);
/**
* Transfer object from source Redis instance to destination Redis instance
*
* @param name of object
* @param host - destination host
* @param port - destination port
* @param database - destination database
* @param timeout - maximum idle time in any moment of the communication with the destination instance in milliseconds
* @return void
*/
Flowable migrate(String name, String host, int port, int database, long timeout);
/**
* Copy object from source Redis instance to destination Redis instance
*
* @param name of object
* @param host - destination host
* @param port - destination port
* @param database - destination database
* @param timeout - maximum idle time in any moment of the communication with the destination instance in milliseconds
* @return void
*/
Flowable copy(String name, String host, int port, int database, long timeout);
/**
* Set a timeout for object. After the timeout has expired,
* the key will automatically be deleted.
*
* @param name of object
* @param timeToLive - timeout before object will be deleted
* @param timeUnit - timeout time unit
* @return true if the timeout was set and false if not
*/
Flowable expire(String name, long timeToLive, TimeUnit timeUnit);
/**
* Set an expire date for object. When expire date comes
* the key will automatically be deleted.
*
* @param name of object
* @param timestamp - expire date in milliseconds (Unix timestamp)
* @return true if the timeout was set and false if not
*/
Flowable expireAt(String name, long timestamp);
/**
* Clear an expire timeout or expire date for object.
*
* @param name of object
* @return true if timeout was removed
* false if object does not exist or does not have an associated timeout
*/
Flowable clearExpire(String name);
/**
* Rename object with oldName to newName
* only if new key is not exists
*
* @param oldName - old name of object
* @param newName - new name of object
* @return true if object has been renamed successfully and false otherwise
*/
Flowable renamenx(String oldName, String newName);
/**
* Rename current object key to newName
*
* @param currentName - current name of object
* @param newName - new name of object
* @return void
*/
Flowable rename(String currentName, String newName);
/**
* Remaining time to live of Redisson object that has a timeout
*
* @param name of key
* @return time in milliseconds
* -2 if the key does not exist.
* -1 if the key exists but has no associated expire.
*/
Flowable remainTimeToLive(String name);
/**
* Update the last access time of an object.
*
* @param names of keys
* @return count of objects were touched
*/
Flowable touch(String... names);
/**
* Checks if provided keys exist
*
* @param names of keys
* @return amount of existing keys
*/
Flowable countExists(String... names);
/**
* Get Redis object type by key
*
* @param key - name of key
* @return type of key
*/
Flowable getType(String key);
/**
* Load keys in incrementally iterate mode. Keys traversed with SCAN operation.
* Each SCAN operation loads up to 10 keys per request.
*
* @return keys
*/
Flowable getKeys();
/**
* Load keys in incrementally iterate mode. Keys traversed with SCAN operation.
* Each SCAN operation loads up to count keys per request.
*
* @param count - keys loaded per request to Redis
* @return keys
*/
Flowable getKeys(int count);
/**
* Find keys by pattern and load it in incrementally iterate mode.
* Keys traversed with SCAN operation.
* Each SCAN operation loads up to 10 keys per request.
*
*
* Supported glob-style patterns:
* h?llo subscribes to hello, hallo and hxllo
* h*llo subscribes to hllo and heeeello
* h[ae]llo subscribes to hello and hallo, but not hillo
*
* @param pattern - match pattern
* @return keys
*/
Flowable getKeysByPattern(String pattern);
/**
* Get all keys by pattern using iterator.
* Keys traversed with SCAN operation. Each SCAN operation loads
* up to count keys per request.
*
* Supported glob-style patterns:
*
* h?llo subscribes to hello, hallo and hxllo
*
* h*llo subscribes to hllo and heeeello
*
* h[ae]llo subscribes to hello and hallo, but not hillo
*
* @param pattern - match pattern
* @param count - keys loaded per request to Redis
* @return keys
*/
Flowable getKeysByPattern(String pattern, int count);
/**
* Get hash slot identifier for key.
* Available for cluster nodes only.
*
* Uses KEYSLOT Redis command.
*
* @param key - name of key
* @return slot number
*/
Flowable getSlot(String key);
/**
* Find keys by key search pattern by one Redis call.
*
* Uses KEYS Redis command.
*
* Supported glob-style patterns:
* h?llo subscribes to hello, hallo and hxllo
* h*llo subscribes to hllo and heeeello
* h[ae]llo subscribes to hello and hallo, but not hillo
*
* @param pattern - match pattern
* @return collection of keys
*/
Flowable> findKeysByPattern(String pattern);
/**
* Get random key
*
* Uses RANDOM_KEY Redis command.
*
* @return random key
*/
Flowable randomKey();
/**
* Delete multiple objects by a key pattern.
*
* Uses Lua script.
*
* Supported glob-style patterns:
* h?llo subscribes to hello, hallo and hxllo
* h*llo subscribes to hllo and heeeello
* h[ae]llo subscribes to hello and hallo, but not hillo
*
* @param pattern - match pattern
* @return deleted objects amount
*/
Flowable deleteByPattern(String pattern);
/**
* Delete multiple objects by name.
*
* Uses DEL Redis command.
*
* @param keys - object names
* @return deleted objects amount
*/
Flowable delete(String ... keys);
/**
* Delete multiple objects by name.
* Actual removal will happen later asynchronously.
*
* Requires Redis 4.0+
*
* @param keys of objects
* @return number of removed keys
*/
Flowable unlink(String ... keys);
/**
* Returns the number of keys in the currently-selected database
*
* @return count of keys
*/
Flowable count();
/**
* Delete all the keys of the currently selected database
*
* Uses FLUSHDB Redis command.
*
* @return void
*/
Flowable flushdb();
/**
* Delete all the keys of all the existing databases
*
* Uses FLUSHALL Redis command.
*
* @return void
*/
Flowable flushall();
}