pharox 0.9.0

A modern library for managing, leasing, and monitoring proxy pools.

Pharox Core

The foundational Python toolkit for building robust proxy management systems.

pharox provides pure, domain-agnostic business logic for managing the entire lifecycle of network proxies. The library is designed as a reusable dependency for any Python application that needs to acquire, lease, and monitor proxies without inheriting opinionated service architecture.

• 📚 Documentation: https://fzaca.github.io/pharox/

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Key Features

• Proxy Leasing System: A powerful system to "lease" proxies to consumers, with support for exclusive, shared (concurrent), and unlimited usage.
• Pluggable Storage: A clean interface (IStorage) that decouples the core logic from the database, allowing you to "plug in" any storage backend (e.g., in-memory, PostgreSQL, MongoDB).
• Health Checking Toolkit: A protocol-aware HealthChecker with configurable options for HTTP, HTTPS, and SOCKS proxies.
• Modern & Type-Safe: Built with Python 3.10+, Pydantic v2, and a 100% type-annotated codebase.
• Toolkit, Not a Framework: Provides focused utilities that can be embedded inside your own scripts, workers, or services without imposing a runtime.

Installation

You can install pharox directly from PyPI:

pip install pharox

Need the SQL adapter tooling? Install the optional extras:

pip install 'pharox[postgres]'
# or, if you're hacking on the repo:
poetry install --extras postgres

Quickstart Example

Here is a simple example of how to use pharox with the default InMemoryStorage to acquire and release a proxy.

from pharox import (
    InMemoryStorage,
    Proxy,
    ProxyManager,
    ProxyPool,
    ProxyStatus,
)

# 1. Setup the storage and manager
storage = InMemoryStorage()
manager = ProxyManager(storage=storage)

# 2. Seed the storage with necessary data for the example
# In a real application, you would load this from your database.

# The manager uses a "default" consumer if none is specified and will
# auto-register it in the storage when first needed.

# Create a pool and a proxy
pool = ProxyPool(name="latam-residential")
storage.add_pool(pool)

proxy = Proxy(
    host="1.1.1.1",
    port=8080,
    protocol="http",
    pool_id=pool.id,
    status=ProxyStatus.ACTIVE,
)
storage.add_proxy(proxy)

# 3. Acquire a proxy from the pool (without specifying a consumer)
print(f"Attempting to acquire a proxy from pool '{pool.name}'...")
lease = manager.acquire_proxy(pool_name=pool.name, duration_seconds=60)

if lease:
    leased_proxy = storage.get_proxy_by_id(lease.proxy_id)
    print(f"Success! Leased proxy: {leased_proxy.host}:{leased_proxy.port}")
    print(f"Lease acquired by consumer ID: {lease.consumer_id}")

    # ... do some work with the proxy ...

    # 4. Release the lease when done
    print("\nReleasing the lease...")
    manager.release_proxy(lease)
    print("Lease released.")

    proxy_after_release = storage.get_proxy_by_id(lease.proxy_id)
    print(f"Proxy lease count after release: {proxy_after_release.current_leases}")
else:
    print("Failed to acquire a proxy. None available.")

If your worker needs to wait for capacity, call manager.acquire_proxy_with_retry(...) (or the manager.with_retrying_lease context manager) to add exponential backoff without scattering custom loops throughout your codebase.

Filtering and Geospatial Matching

ProxyFilters let you target proxies by provider metadata or geographic proximity. The storage layer handles the matching logic, including radius-based searches using latitude and longitude.

from pharox import ProxyFilters

filters = ProxyFilters(
    country="AR",
    source="fast-provider",
    latitude=-34.6,
    longitude=-58.38,
    radius_km=50,
)

lease = manager.acquire_proxy(
    pool_name="latam-residential",
    consumer_name="team-madrid",
    filters=filters,
)

if lease:
    print("Got a proxy close to Buenos Aires!")

Need to mix logical clauses or add custom checks? Compose filters with any_of/all_of/none_of and an optional predicate:

from pharox import ProxyFilters

filters = ProxyFilters(
    any_of=[
        ProxyFilters(country="AR"),
        ProxyFilters(all_of=[ProxyFilters(source="andina"), ProxyFilters(country="BR")]),
    ],
    none_of=[ProxyFilters(city="forbidden")],
    predicate=lambda proxy: proxy.port >= 8000,
)

The predicate runs in Python against each candidate Proxy, so keep it fast.

Health Checks Across Protocols

Use HealthChecker to verify connectivity through HTTP, HTTPS, or SOCKS proxies. Health checks are configurable via HealthCheckOptions, letting you define target URLs, expected status codes, retry counts, and latency thresholds.

from pharox import HealthCheckOptions, HealthChecker, ProxyStatus

checker = HealthChecker()
options = HealthCheckOptions(
    target_url="https://example.com/status/204",
    expected_status_codes=[204],
    attempts=2,
    slow_threshold_ms=1500,
)

proxy = storage.get_proxy_by_id(lease.proxy_id)
health = await checker.check_proxy(proxy, options=options)

if health.status in {ProxyStatus.ACTIVE, ProxyStatus.SLOW}:
    print("Proxy ready for workloads")
else:
    print(f"Proxy inactive: {health.error_message}")

Embedding the Toolkit

pharox is intentionally agnostic about where it runs. Typical usage includes:

• Automation scripts and workers leasing proxies with ProxyManager and performing health probes before dispatching workloads.
• Custom services that provide APIs or dashboards on top of the toolkit by implementing the IStorage contract for their own databases.
• Standalone applications that rely on the in-memory storage adapter for quick tasks or testing harnesses.

The in-memory adapter included with the package is great for development. For production, implement IStorage to connect the toolkit to your own persistence layer.

Examples

• pharox.storage.postgres.PostgresStorage provides the reference PostgreSQL adapter. The accompanying examples/postgres/ directory bundles Docker Compose, schema migrations, and customization notes you can copy into your services.

PostgreSQL Adapter Quickstart

Pharox bundles a production-ready SQL adapter so you can persist pools, proxies, and leases without building storage plumbing from scratch.

1. Install the extras

   pip install 'pharox[postgres]'
   # or
   poetry install --extras postgres
   

2. Bring up Postgres locally

   docker compose -f examples/postgres/docker-compose.yml up -d
   psql postgresql://pharox:pharox@localhost:5439/pharox \
       -f examples/postgres/migrations/0001_init.sql
   psql postgresql://pharox:pharox@localhost:5439/pharox \
       -f examples/postgres/migrations/0002_selector_state.sql
   

3. Use the adapter in code

   from sqlalchemy import create_engine
   
   from pharox.manager import ProxyManager
   from pharox import SelectorStrategy
   from pharox.storage.postgres import PostgresStorage
   
   engine = create_engine("postgresql+psycopg://pharox:pharox@localhost:5439/pharox")
   storage = PostgresStorage(engine=engine)
   manager = ProxyManager(storage=storage)
   lease = manager.acquire_proxy(
       pool_name="latam-residential",
       consumer_name="worker-1",
       selector=SelectorStrategy.LEAST_USED,
   )
   if lease:
       print("Got proxy", lease.proxy_id)
   

4. Run the storage contract suite (optional)

   PHAROX_TEST_POSTGRES_URL=postgresql+psycopg://pharox:pharox@localhost:5439/pharox \
       poetry run pytest tests/test_storage_contract_postgres.py
   

Need more guidance? See the Postgres adapter walkthrough and the storage adapter cookbook.

Contributing

Contributions are welcome! Please see the CONTRIBUTING.md file for details on how to set up your development environment, run tests, and submit a pull request.

License

This project is licensed under the MIT License - see the LICENSE file for details.