wredis 0.2.0

Redis control with Python

WRedis

WRedis is a library designed to make interacting with Redis simple and efficient. It offers an intuitive API and useful features to handle connections, basic and advanced operations with Redis.

Description

WRedis simplifies interacting with Redis by providing:

• Easy-to-use methods for common operations (SET, GET, DELETE).
• Fast and efficient connection to Redis.
• Support for loguru and log management.
• Extensible for larger projects.

Installation

To install the library, use pip:

pip install wredis

Make sure you have Redis installed on your system or that you can access a remote Redis server. You can install Redis locally by following the official instructions or use a docker-compose.yaml like the following:

version: "3.3"
services:
  redis:
    image: redislabs/redismod
    ports:
      - "6379:6379"
    environment:
      - SO=docker
    volumes:
      - ./cache_redis:/data
    command: --dir /data --loadmodule /usr/lib/redis/modules/redistimeseries.so

  redis-commander:
    image: rediscommander/redis-commander:latest
    environment:
      - REDIS_HOSTS=local:redis:6379
      - HTTP_USER=root
      - HTTP_PASSWORD=qwerty
    ports:
      - "8081:8081"
    depends_on:
      - redis

Description

The WRedis library offers a series of modules that facilitate interaction with Redis. The available modules are described below:

bitmaps

Description

This module allows you to interact with bitmaps in Redis.

hash

Description

This module allows you to interact with hashes in Redis.

pubsub

Description

This module allows you to interact with the Redis publication and subscription system.

queue

Description

This module allows you to interact with queues in Redis.

sets

Description

This module allows you to interact with sets in Redis.

sortsets

Description

This module allows you to interact with sorted sets in Redis.

streams

Description

This module allows you to interact with streams in Redis.

License

MIT

This project is licensed under the MIT license. See the LICENSE file for more details.

Examples

This directory contains a collection of examples that demonstrate the usage of various modules and functionalities in this project. Each subfolder corresponds to a specific module and includes example scripts to help you understand how to use that module.

Directory Structure

The examples are organized as follows:

examples/
    sorted_set.py/
        read.py
        write.py
    sets/
        read.py
        write.py
    pub_sub/
        consumer.py
        producer.py
    queue/
        consumer.py
        producer.py
    streams/
        consume.py
        producer.py
    bitmap/
        read.py
        write.py
    hash/
        read.py
        write.py

How to Use

1. Navigate to the module folder of interest, e.g., examples/module1/.
2. Open the README.md in that folder to get detailed information about the examples.
3. Run the scripts directly using:

   python example1.py
   

Modules and Examples

bitmap

Description

This module demonstrates specific functionalities.

• read.py: Example demonstrating functionality.

from wredis.bitmap import RedisBitmapManager
bitmap_manager = RedisBitmapManager(host="localhost")
print(bitmap_manager.get_bit("my_bitmap", 0))
print(bitmap_manager.count_bits("my_bitmap"))

• write.py: Example demonstrating functionality.

from a_wredis import RedisBitmapManager


bitmap_manager = RedisBitmapManager(host="localhost")

bitmap_manager.set_bit(key="my_bitmap", offset=5, value=1)

hash

Description

This module demonstrates specific functionalities.

• read.py: Example demonstrating functionality.

from wredis.hash import RedisHashManager


if __name__ == "__main__":
    # Crear una instancia de RedisHashManager
    redis_manager = RedisHashManager(host="localhost")

    # Leer valores específicos del hash
    user1 = redis_manager.read_hash("my_hash", "user:1")
    print(f"Usuario 1: {user1}")

    # Leer todos los campos del hash
    all_users = redis_manager.read_all_hash("my_hash")
    print(f"Todos los usuarios: {all_users}")

    # Agregar un nuevo campo si no existe
    redis_manager.update_hash(
        "my_hash", "user:3", {"name": "William", "age": 35, "gender": "male"}
    )
    
    # Agregar un nuevo campo si no existe
    redis_manager.update_hash(
        "my_hash", "user:5", {"name": "William", "age": 35, "gender": "male"}
    )

    # Eliminar un campo específico
    redis_manager.delete_hash_field("my_hash", "user:2")

    # Leer el hash después de eliminar un campo
    all_users_after_deletion = redis_manager.read_all_hash("my_hash")
    print(f"Usuarios después de eliminación: {all_users_after_deletion}")

• write.py: Example demonstrating functionality.

from wredis.hash import RedisHashManager


if __name__ == "__main__":
    # Crear una instancia de RedisHashManager
    redis_manager = RedisHashManager(host="localhost")

    # Escribir valores en un hash
    redis_manager.create_hash("my_hash", "user:1", {"name": "Alice", "age": 30}, ttl=60)
    redis_manager.create_hash("my_hash", "user:2", {"name": "Bob", "age": 25})
    redis_manager.create_hash("my_hash", "user:3", {"name": "Bob", "age": 25})
    redis_manager.create_hash("my_hash", "user:4", {"name": "Bob", "age": 25})

pub_sub

Description

This module demonstrates specific functionalities.

• consumer.py: Example demonstrating functionality.

from wredis.pubsub import RedisPubSubManager
import signal

pubsub_manager = RedisPubSubManager(host="localhost", verbose=False)


@pubsub_manager.on_message("channel_1")
def handle_message(message):
    print(f"[channel_1] Mensaje recibido: {message}")


@pubsub_manager.on_message("channel_2")
def handle_channel_2(message):
    print(f"[channel_2] Mensaje recibido: {message}")


# Manejar la señal de interrupción (Ctrl+C) para salir limpiamente
def signal_handler(sig, frame):
    print("\nDeteniendo programa...")
    pubsub_manager.stop_listeners()
    print("Programa detenido.")
    exit(0)


signal.signal(signal.SIGINT, signal_handler)

signal.pause()

• producer.py: Example demonstrating functionality.

from wredis.pubsub import RedisPubSubManager


pubsub_manager = RedisPubSubManager(host="localhost")


pubsub_manager.publish_message("channel_1", "Hello, Redis!")


pubsub_manager.publish_message("channel_2", {"saludo": "Hola desde channel_2!"})

queue

Description

This module demonstrates specific functionalities.

• consumer.py: Example demonstrating functionality.

from wredis.queue import RedisQueueManager


# Crear una instancia del consumidor
queue_manager = RedisQueueManager(poll_interval=2, host="localhost", verbose=False)


@queue_manager.on_message("4090")
def worker(record):

    global conteo_global_queso

    """
    Procesa un registro de la cola 'queue_1'.
    """
    print(f"Procesando de 'queue_1': {record}")


@queue_manager.on_message("queue:4060")
def worker(record):

    global conteo_global_queso

    """
    Procesa un registro de la cola 'queue_1'.
    """
    print(f"Procesando de 'queue_1': {record}")


@queue_manager.on_message("4060")
def worker(record):

    global conteo_global_queso

    """
    Procesa un registro de la cola 'queue_1'.
    """
    print(f"Procesando de 'queue_1': {record}")


# Verificar la longitud de la cola
queue_length = queue_manager.get_queue_length("tasks")


queue_manager.start()

# Mantener el programa activo
queue_manager.wait()

• producer.py: Example demonstrating functionality.

from wredis.queue import RedisQueueManager


# Crear una instancia del productor
queue_manager = RedisQueueManager(host="localhost")

# Publicar mensajes en diferentes colas
queue_manager.publish("4090", {"id": 1, "task": "process_image", "status": "pending"})
queue_manager.publish("4060", {"id": 2, "task": "generate_report", "priority": "high"})
queue_manager.publish(
    "queue:4060", {"id": 3, "task": "process_video", "status": "pending"}
)

queue_manager.publish("tasks", {"task_id": 3, "description": "Generar reporte"}, ttl=30)
queue_manager.publish(
    "tasks", {"task_id": 4, "description": "Actualizar base de datos"}, ttl=120
)
queue_manager.publish(
    "tasks",
    {
        "task_id": 4,
        "description": {"id": 2, "task": "generate_report", "priority": "high"},
    },
    ttl=10,
)


# NOTA: ajusta un TTL modifica el tiempo de toda la cola y no de un mensaje en particular
# NOTA: el TTL se mide en segundos

sets

Description

This module demonstrates specific functionalities.

• read.py: Example demonstrating functionality.

from wredis.sets import RedisSetManager


set_manager = RedisSetManager(host="localhost")


print(set_manager.get_set_members("my_set"))

• write.py: Example demonstrating functionality.

from wredis.sets import RedisSetManager

set_manager = RedisSetManager(host="localhost")

set_manager.add_to_set("my_set", "value1", "value2")
set_manager.add_to_set("my_set", "value5", "value2")
set_manager.add_to_set("my_set", "value1", "value8")

sorted_set.py

Description

This module demonstrates specific functionalities.

• read.py: Example demonstrating functionality.

from wredis.sortedset import RedisSortedSetManager


sorted_set_manager = RedisSortedSetManager(host="localhost")


items = sorted_set_manager.get_sorted_set("my_sorted_set", with_scores=True)
items_reverse = sorted_set_manager.get_sorted_set_reverse("my_sorted_set")
# Obtener rank y score
rank = sorted_set_manager.get_rank("my_sorted_set", "item1")
score = sorted_set_manager.get_score("my_sorted_set", "item2")

# Eliminar un miembro
sorted_set_manager.remove_from_sorted_set("my_sorted_set", "item1")

# Eliminar todo el conjunto ordenado
# sorted_set_manager.delete_sorted_set("my_sorted_set")


print(items)
print(items_reverse)
print(rank)
print(score)

• write.py: Example demonstrating functionality.

from wredis.sortedset import RedisSortedSetManager


sorted_set_manager = RedisSortedSetManager(host="localhost", verbose=False)

sorted_set_manager.add_to_sorted_set("my_sorted_set", 1, "item1")
sorted_set_manager.add_to_sorted_set("my_sorted_set", 3, "item3")
sorted_set_manager.add_to_sorted_set("my_sorted_set", 2, "item2")

sorted_set_manager.add_to_sorted_set("my_sorted_set", 1, "item1")
sorted_set_manager.add_to_sorted_set(key="my_sorted_set", score=5, member="item5")

streams

Description

This module demonstrates specific functionalities.

• consume.py: Example demonstrating functionality.

from wredis.streams import RedisStreamManager


stream_manager = RedisStreamManager(host="localhost", verbose=False)


# Registrar un consumidor para un stream
@stream_manager.on_message(
    stream_name="my_stream", group_name="my_group", consumer_name="consumer_1"
)
def process_message(data):
    print(f"[Consumer 1] Procesando mensaje: {data}")


# Registrar el segundo consumidor
@stream_manager.on_message(
    stream_name="my_stream_2", group_name="my_group", consumer_name="consumer_2"
)
def process_message_consumer_2(data):
    print(f"[Consumer 2] Procesando mensaje: {data}")


# Mantener el programa activo para consumir mensajes
stream_manager.wait()

• producer.py: Example demonstrating functionality.

from wredis.streams import RedisStreamManager


stream_manager = RedisStreamManager(host="localhost")

stream_manager.add_to_stream("my_stream", {"field1": "value1"})
stream_manager.add_to_stream("my_stream", {"field2": "value3", "field4": "value4"})


stream_manager.add_to_stream("my_stream_2", {"field1": "value1"})